diff options
| -rw-r--r-- | package-lock.json | 9697 | ||||
| -rw-r--r-- | package.json | 9 | ||||
| -rw-r--r-- | public/css/app.css | 199 | ||||
| -rw-r--r-- | public/js/app.js | 43149 | ||||
| -rw-r--r-- | public/mix-manifest.json | 4 | ||||
| -rw-r--r-- | resources/js/app.js | 23 | ||||
| -rw-r--r-- | resources/js/components/chessTable.vue | 33 | ||||
| -rw-r--r-- | resources/sass/app.scss | 1 | ||||
| -rw-r--r-- | resources/views/chess.blade.php | 13 | ||||
| -rw-r--r-- | routes/web.php | 4 |
10 files changed, 53131 insertions, 1 deletions
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a/package.json b/package.json index 9fcb8ee..de3f5d2 100644 --- a/package.json +++ b/package.json @@ -16,6 +16,13 @@ "lodash": "^4.17.13", "resolve-url-loader": "^2.3.1", "sass": "^1.15.2", - "sass-loader": "^7.1.0" + "sass-loader": "^7.1.0", + "vue": "^2.5.17", + "vue-chessboard": "^0.6.5", + "vue-template-compiler": "^2.6.10" + }, + "dependencies": { + "jquery": "^3.4.1", + "vue": "^2.6.10" } } diff --git a/public/css/app.css b/public/css/app.css new file mode 100644 index 0000000..386f18f --- /dev/null +++ b/public/css/app.css @@ -0,0 +1,199 @@ +/* + * Chessground base css properties. + * + * You need to include the css files in themes folder in order to have the + * board and pieces displayed! + */ +.cg-board-wrap { + width: 320px; + height: 320px; + position: relative; + display: block; +} +.cg-board { + position: absolute; + top: 0; + left: 0; + width: 100%; + height: 100%; + -webkit-user-select: none; + -moz-user-select: none; + -ms-user-select: none; + user-select: none; + line-height: 0; + background-size: cover; + cursor: pointer; +} +.cg-board square { + position: absolute; + top: 0; + left: 0; + width: 12.5%; + height: 12.5%; +} +.cg-board square.move-dest { + background: radial-gradient(rgba(20, 85, 30, 0.5) 22%, #208530 0, rgba(0, 0, 0, 0.3) 0, rgba(0, 0, 0, 0) 0); +} +.cg-board square.premove-dest { + background: radial-gradient(rgba(20, 30, 85, 0.5) 22%, #203085 0, rgba(0, 0, 0, 0.3) 0, rgba(0, 0, 0, 0) 0); +} +.cg-board square.oc.move-dest { + background: radial-gradient(transparent 0%, transparent 80%, rgba(20, 85, 0, 0.3) 80%); +} +.cg-board square.oc.premove-dest { + background: radial-gradient(transparent 0%, transparent 80%, rgba(20, 30, 85, 0.2) 80%); +} +.cg-board .cg-square.move-dest.drag-over, +.cg-board .cg-square.premove-dest.drag-over { + box-shadow: inset 0 0 10px 2px rgba(216, 85, 0, 0.9); +} +.cg-board square.last-move { + will-change: transform; + background-color: rgba(155, 199, 0, 0.41); +} +.cg-board square.selected { + background-color: rgba(20, 85, 30, 0.5); +} +.cg-board square.check { + background: radial-gradient(ellipse at center, rgba(255, 0, 0, 1) 0%, rgba(231, 0, 0, 1) 25%, rgba(169, 0, 0, 0) 89%, rgba(158, 0, 0, 0) 100%); +} +.cg-board square.current-premove { + background-color: rgba(20, 30, 85, 0.5); +} +.cg-board piece { + position: absolute; + top: 0; + left: 0; + width: 12.5%; + height: 12.5%; + background-size: cover; + z-index: 2; + will-change: transform; +} +.cg-board piece.dragging { + cursor: move; + z-index: 9; +} +.cg-board piece.anim { + z-index: 8; +} +.cg-board piece.fading { + z-index: 1; + opacity: 0.5; +} +.cg-board-wrap div.over { + position: absolute; + top: 0; + left: 0; + background-color: rgba(20, 85, 30, 0.3); +} +.cg-board-wrap piece.ghost { + opacity: 0.3; +} +.cg-board-wrap svg { + overflow: hidden; + position: relative; + top: 0px; + left: 0px; + width: 100%; + height: 100%; + pointer-events: none; + z-index: 2; + opacity: 0.6; +} +.cg-board-wrap svg image { + opacity: 0.5; +} +.cg-board-wrap coords { + position: absolute; + display: -webkit-box; + display: flex; + pointer-events: none; + opacity: 0.8; + font-size: 9px; +} +.cg-board-wrap coords.ranks { + right: -15px; + top: 0; + -webkit-box-orient: vertical; + -webkit-box-direction: reverse; + flex-flow: column-reverse; + height: 100%; + width: 12px; +} +.cg-board-wrap coords.ranks.black { + -webkit-box-orient: vertical; + -webkit-box-direction: normal; + flex-flow: column; +} +.cg-board-wrap coords.files { + bottom: -16px; + left: 0; + -webkit-box-orient: horizontal; + -webkit-box-direction: normal; + flex-flow: row; + width: 100%; + height: 16px; + text-transform: uppercase; + text-align: center; +} +.cg-board-wrap coords.files.black { + -webkit-box-orient: horizontal; + -webkit-box-direction: reverse; + flex-flow: row-reverse; +} +.cg-board-wrap coords coord { + -webkit-box-flex: 1; + flex: 1 1 auto; +} +.cg-board-wrap coords.ranks coord { + -webkit-transform: translateY(39%); + transform: translateY(39%); +} + + +/* THEME CUSTOMIZATION*/ +/* + * Board + */ +.blue .cg-board-wrap { + background-image: url('data:image/svg+xml;base64,PHN2ZyB2ZXJzaW9uPSIxLjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgeG1sbnM6eGxpbms9Imh0dHA6Ly93d3cudzMub3JnLzE5OTkveGxpbmsiIHZpZXdCb3g9IjAgMCA4MDAgODAwIj4NCjxnIGlkPSJicm93bi1ib2FyZCI+DQo8ZyBpZD0iTGlnaHQiIGZpbGw9IiNkZWUzZTYiPg0KPHJlY3Qgd2lkdGg9IjgwMCIgaGVpZ2h0PSI4MDAiLz4NCjwvZz4NCjxnIGlkPSJGcmFtZSIgZmlsbD0ibm9uZSI+DQo8cmVjdCB3aWR0aD0iODAwIiBoZWlnaHQ9IjgwMCIvPg0KPC9nPg0KPGcgaWQ9IkRhcmsiIGZpbGw9IiM4Y2EyYWQiPg0KPGcgaWQ9InJheiI+DQo8ZyBpZD0iZHZhIj4NCjxnIGlkPSJ0cmkiPg0KPHJlY3QgeD0iMTAwIiB3aWR0aD0iMTAwIiBoZWlnaHQ9IjEwMCIvPg0KPHJlY3QgeD0iMzAwIiB3aWR0aD0iMTAwIiBoZWlnaHQ9IjEwMCIvPg0KPHJlY3QgeD0iNTAwIiB3aWR0aD0iMTAwIiBoZWlnaHQ9IjEwMCIvPg0KPHJlY3QgeD0iNzAwIiB3aWR0aD0iMTAwIiBoZWlnaHQ9IjEwMCIvPg0KPC9nPg0KPHVzZSB0cmFuc2Zvcm09InRyYW5zbGF0ZSgtMTAwLDEwMCkiIHhsaW5rOmhyZWY9IiN0cmkiLz4NCjwvZz4NCjx1c2UgdHJhbnNmb3JtPSJ0cmFuc2xhdGUoMCwyMDApIiB4bGluazpocmVmPSIjZHZhIi8+DQo8L2c+DQo8dXNlIHRyYW5zZm9ybT0idHJhbnNsYXRlKDAsNDAwKSIgeGxpbms6aHJlZj0iI3JheiIvPg0KPC9nPg0KPC9nPg0KPC9zdmc+'); +} +.merida .cg-board piece.pawn.white { + background-image: 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+} +.merida .cg-board piece.bishop.white { + background-image: 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+} +.merida .cg-board piece.knight.white { + background-image: 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C0uNzU0IDEuNDk5LTEuNzYxIDEuMzM4LS4yOTYtLjA1MS0uNTMzLS4xNTItLjcyLS4yOTYtLjA1OS4wNzYtLjE2MS4yNjItLjI5Ni41NDItLjE3OC41MzMtLjUyNS43MTEtMS4wNDEuNTUtLjUwOC0uMjAzLS43MTEtLjU3Ni0uNTkzLTEuMTE4Ljc0NS0xLjkwNSAyLjA5MS0zLjIwOSA0LjA0LTMuOTIuNTY3LS4xNjkuOTQgMCAxLjExOC40OTEuMjAzLjUzMy4wNTEuODk4LS40NDkgMS4wOTItLjA5My4wNTEtLjE4Ni4xMDItLjI3MS4xMzYtLjA4NS4wNDItLjE2OS4wOTMtLjI3MS4xNDQiLz48L3N2Zz4='); +} +.merida .cg-board piece.rook.white { + background-image: 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+} +.merida .cg-board piece.queen.white { + background-image: 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+} +.merida .cg-board piece.king.white { + background-image: 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+} +.merida .cg-board piece.pawn.black { + background-image: url('data:image/svg+xml;base64,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'); +} +.merida .cg-board piece.bishop.black { + background-image: 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+} +.merida .cg-board piece.knight.black { + background-image: url('data:image/svg+xml;base64,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'); +} +.merida .cg-board piece.rook.black { + background-image: url('data:image/svg+xml;base64,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'); +} +.merida .cg-board piece.queen.black { + background-image: 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+} +.merida .cg-board piece.king.black { + background-image: 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module.__esModule ? +/******/ function getDefault() { return module['default']; } : +/******/ function getModuleExports() { return module; }; +/******/ __webpack_require__.d(getter, 'a', getter); +/******/ return getter; +/******/ }; +/******/ +/******/ // Object.prototype.hasOwnProperty.call +/******/ __webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); }; +/******/ +/******/ // __webpack_public_path__ +/******/ __webpack_require__.p = "/"; +/******/ +/******/ +/******/ // Load entry module and return exports +/******/ return __webpack_require__(__webpack_require__.s = 0); +/******/ }) +/************************************************************************/ +/******/ ({ + +/***/ "./node_modules/axios/index.js": +/*!*************************************!*\ + !*** ./node_modules/axios/index.js ***! + \*************************************/ +/*! no static exports found */ +/***/ (function(module, exports, __webpack_require__) { + +module.exports = __webpack_require__(/*! ./lib/axios */ "./node_modules/axios/lib/axios.js"); + +/***/ }), + +/***/ "./node_modules/axios/lib/adapters/xhr.js": +/*!************************************************!*\ + !*** ./node_modules/axios/lib/adapters/xhr.js ***! + \************************************************/ +/*! no static exports found */ +/***/ (function(module, exports, __webpack_require__) { + +"use strict"; + + +var utils = __webpack_require__(/*! ./../utils */ "./node_modules/axios/lib/utils.js"); +var settle = __webpack_require__(/*! ./../core/settle */ "./node_modules/axios/lib/core/settle.js"); +var buildURL = __webpack_require__(/*! ./../helpers/buildURL */ "./node_modules/axios/lib/helpers/buildURL.js"); +var parseHeaders = __webpack_require__(/*! ./../helpers/parseHeaders */ "./node_modules/axios/lib/helpers/parseHeaders.js"); +var isURLSameOrigin = __webpack_require__(/*! ./../helpers/isURLSameOrigin */ "./node_modules/axios/lib/helpers/isURLSameOrigin.js"); +var createError = __webpack_require__(/*! ../core/createError */ "./node_modules/axios/lib/core/createError.js"); + +module.exports = function xhrAdapter(config) { + return new Promise(function dispatchXhrRequest(resolve, reject) { + var requestData = config.data; + var requestHeaders = config.headers; + + if (utils.isFormData(requestData)) { + delete requestHeaders['Content-Type']; // Let the browser set it + } + + var request = new XMLHttpRequest(); + + // HTTP basic authentication + if (config.auth) { + var username = config.auth.username || ''; + var password = config.auth.password || ''; + requestHeaders.Authorization = 'Basic ' + btoa(username + ':' + password); + } + + request.open(config.method.toUpperCase(), buildURL(config.url, config.params, config.paramsSerializer), true); + + // Set the request timeout in MS + request.timeout = config.timeout; + + // Listen for ready state + request.onreadystatechange = function handleLoad() { + if (!request || request.readyState !== 4) { + return; + } + + // The request errored out and we didn't get a response, this will be + // handled by onerror instead + // With one exception: request that using file: protocol, most browsers + // will return status as 0 even though it's a successful request + if (request.status === 0 && !(request.responseURL && request.responseURL.indexOf('file:') === 0)) { + return; + } + + // Prepare the response + var responseHeaders = 'getAllResponseHeaders' in request ? parseHeaders(request.getAllResponseHeaders()) : null; + var responseData = !config.responseType || config.responseType === 'text' ? request.responseText : request.response; + var response = { + data: responseData, + status: request.status, + statusText: request.statusText, + headers: responseHeaders, + config: config, + request: request + }; + + settle(resolve, reject, response); + + // Clean up request + request = null; + }; + + // Handle browser request cancellation (as opposed to a manual cancellation) + request.onabort = function handleAbort() { + if (!request) { + return; + } + + reject(createError('Request aborted', config, 'ECONNABORTED', request)); + + // Clean up request + request = null; + }; + + // Handle low level network errors + request.onerror = function handleError() { + // Real errors are hidden from us by the browser + // onerror should only fire if it's a network error + reject(createError('Network Error', config, null, request)); + + // Clean up request + request = null; + }; + + // Handle timeout + request.ontimeout = function handleTimeout() { + reject(createError('timeout of ' + config.timeout + 'ms exceeded', config, 'ECONNABORTED', + request)); + + // Clean up request + request = null; + }; + + // Add xsrf header + // This is only done if running in a standard browser environment. + // Specifically not if we're in a web worker, or react-native. + if (utils.isStandardBrowserEnv()) { + var cookies = __webpack_require__(/*! ./../helpers/cookies */ "./node_modules/axios/lib/helpers/cookies.js"); + + // Add xsrf header + var xsrfValue = (config.withCredentials || isURLSameOrigin(config.url)) && config.xsrfCookieName ? + cookies.read(config.xsrfCookieName) : + undefined; + + if (xsrfValue) { + requestHeaders[config.xsrfHeaderName] = xsrfValue; + } + } + + // Add headers to the request + if ('setRequestHeader' in request) { + utils.forEach(requestHeaders, function setRequestHeader(val, key) { + if (typeof requestData === 'undefined' && key.toLowerCase() === 'content-type') { + // Remove Content-Type if data is undefined + delete requestHeaders[key]; + } else { + // Otherwise add header to the request + request.setRequestHeader(key, val); + } + }); + } + + // Add withCredentials to request if needed + if (config.withCredentials) { + request.withCredentials = true; + } + + // Add responseType to request if needed + if (config.responseType) { + try { + request.responseType = config.responseType; + } catch (e) { + // Expected DOMException thrown by browsers not compatible XMLHttpRequest Level 2. + // But, this can be suppressed for 'json' type as it can be parsed by default 'transformResponse' function. + if (config.responseType !== 'json') { + throw e; + } + } + } + + // Handle progress if needed + if (typeof config.onDownloadProgress === 'function') { + request.addEventListener('progress', config.onDownloadProgress); + } + + // Not all browsers support upload events + if (typeof config.onUploadProgress === 'function' && request.upload) { + request.upload.addEventListener('progress', config.onUploadProgress); + } + + if (config.cancelToken) { + // Handle cancellation + config.cancelToken.promise.then(function onCanceled(cancel) { + if (!request) { + return; + } + + request.abort(); + reject(cancel); + // Clean up request + request = null; + }); + } + + if (requestData === undefined) { + requestData = null; + } + + // Send the request + request.send(requestData); + }); +}; + + +/***/ }), + +/***/ "./node_modules/axios/lib/axios.js": +/*!*****************************************!*\ + !*** ./node_modules/axios/lib/axios.js ***! + \*****************************************/ +/*! no static exports found */ +/***/ (function(module, exports, __webpack_require__) { + +"use strict"; + + +var utils = __webpack_require__(/*! ./utils */ "./node_modules/axios/lib/utils.js"); +var bind = __webpack_require__(/*! ./helpers/bind */ "./node_modules/axios/lib/helpers/bind.js"); +var Axios = __webpack_require__(/*! ./core/Axios */ "./node_modules/axios/lib/core/Axios.js"); +var mergeConfig = __webpack_require__(/*! ./core/mergeConfig */ "./node_modules/axios/lib/core/mergeConfig.js"); +var defaults = __webpack_require__(/*! ./defaults */ "./node_modules/axios/lib/defaults.js"); + +/** + * Create an instance of Axios + * + * @param {Object} defaultConfig The default config for the instance + * @return {Axios} A new instance of Axios + */ +function createInstance(defaultConfig) { + var context = new Axios(defaultConfig); + var instance = bind(Axios.prototype.request, context); + + // Copy axios.prototype to instance + utils.extend(instance, Axios.prototype, context); + + // Copy context to instance + utils.extend(instance, context); + + return instance; +} + +// Create the default instance to be exported +var axios = createInstance(defaults); + +// Expose Axios class to allow class inheritance +axios.Axios = Axios; + +// Factory for creating new instances +axios.create = function create(instanceConfig) { + return createInstance(mergeConfig(axios.defaults, instanceConfig)); +}; + +// Expose Cancel & CancelToken +axios.Cancel = __webpack_require__(/*! ./cancel/Cancel */ "./node_modules/axios/lib/cancel/Cancel.js"); +axios.CancelToken = __webpack_require__(/*! ./cancel/CancelToken */ "./node_modules/axios/lib/cancel/CancelToken.js"); +axios.isCancel = __webpack_require__(/*! ./cancel/isCancel */ "./node_modules/axios/lib/cancel/isCancel.js"); + +// Expose all/spread +axios.all = function all(promises) { + return Promise.all(promises); +}; +axios.spread = __webpack_require__(/*! ./helpers/spread */ "./node_modules/axios/lib/helpers/spread.js"); + +module.exports = axios; + +// Allow use of default import syntax in TypeScript +module.exports.default = axios; + + +/***/ }), + +/***/ "./node_modules/axios/lib/cancel/Cancel.js": +/*!*************************************************!*\ + !*** ./node_modules/axios/lib/cancel/Cancel.js ***! + \*************************************************/ +/*! no static exports found */ +/***/ (function(module, exports, __webpack_require__) { + +"use strict"; + + +/** + * A `Cancel` is an object that is thrown when an operation is canceled. + * + * @class + * @param {string=} message The message. + */ +function Cancel(message) { + this.message = message; +} + +Cancel.prototype.toString = function toString() { + return 'Cancel' + (this.message ? ': ' + this.message : ''); +}; + +Cancel.prototype.__CANCEL__ = true; + +module.exports = Cancel; + + +/***/ }), + +/***/ "./node_modules/axios/lib/cancel/CancelToken.js": +/*!******************************************************!*\ + !*** ./node_modules/axios/lib/cancel/CancelToken.js ***! + \******************************************************/ +/*! no static exports found */ +/***/ (function(module, exports, __webpack_require__) { + +"use strict"; + + +var Cancel = __webpack_require__(/*! ./Cancel */ "./node_modules/axios/lib/cancel/Cancel.js"); + +/** + * A `CancelToken` is an object that can be used to request cancellation of an operation. + * + * @class + * @param {Function} executor The executor function. + */ +function CancelToken(executor) { + if (typeof executor !== 'function') { + throw new TypeError('executor must be a function.'); + } + + var resolvePromise; + this.promise = new Promise(function promiseExecutor(resolve) { + resolvePromise = resolve; + }); + + var token = this; + executor(function cancel(message) { + if (token.reason) { + // Cancellation has already been requested + return; + } + + token.reason = new Cancel(message); + resolvePromise(token.reason); + }); +} + +/** + * Throws a `Cancel` if cancellation has been requested. + */ +CancelToken.prototype.throwIfRequested = function throwIfRequested() { + if (this.reason) { + throw this.reason; + } +}; + +/** + * Returns an object that contains a new `CancelToken` and a function that, when called, + * cancels the `CancelToken`. + */ +CancelToken.source = function source() { + var cancel; + var token = new CancelToken(function executor(c) { + cancel = c; + }); + return { + token: token, + cancel: cancel + }; +}; + +module.exports = CancelToken; + + +/***/ }), + +/***/ "./node_modules/axios/lib/cancel/isCancel.js": +/*!***************************************************!*\ + !*** ./node_modules/axios/lib/cancel/isCancel.js ***! + \***************************************************/ +/*! no static exports found */ +/***/ (function(module, exports, __webpack_require__) { + +"use strict"; + + +module.exports = function isCancel(value) { + return !!(value && value.__CANCEL__); +}; + + +/***/ }), + +/***/ "./node_modules/axios/lib/core/Axios.js": +/*!**********************************************!*\ + !*** ./node_modules/axios/lib/core/Axios.js ***! + \**********************************************/ +/*! no static exports found */ +/***/ (function(module, exports, __webpack_require__) { + +"use strict"; + + +var utils = __webpack_require__(/*! ./../utils */ "./node_modules/axios/lib/utils.js"); +var buildURL = __webpack_require__(/*! ../helpers/buildURL */ "./node_modules/axios/lib/helpers/buildURL.js"); +var InterceptorManager = __webpack_require__(/*! ./InterceptorManager */ "./node_modules/axios/lib/core/InterceptorManager.js"); +var dispatchRequest = __webpack_require__(/*! ./dispatchRequest */ "./node_modules/axios/lib/core/dispatchRequest.js"); +var mergeConfig = __webpack_require__(/*! ./mergeConfig */ "./node_modules/axios/lib/core/mergeConfig.js"); + +/** + * Create a new instance of Axios + * + * @param {Object} instanceConfig The default config for the instance + */ +function Axios(instanceConfig) { + this.defaults = instanceConfig; + this.interceptors = { + request: new InterceptorManager(), + response: new InterceptorManager() + }; +} + +/** + * Dispatch a request + * + * @param {Object} config The config specific for this request (merged with this.defaults) + */ +Axios.prototype.request = function request(config) { + /*eslint no-param-reassign:0*/ + // Allow for axios('example/url'[, config]) a la fetch API + if (typeof config === 'string') { + config = arguments[1] || {}; + config.url = arguments[0]; + } else { + config = config || {}; + } + + config = mergeConfig(this.defaults, config); + config.method = config.method ? config.method.toLowerCase() : 'get'; + + // Hook up interceptors middleware + var chain = [dispatchRequest, undefined]; + var promise = Promise.resolve(config); + + this.interceptors.request.forEach(function unshiftRequestInterceptors(interceptor) { + chain.unshift(interceptor.fulfilled, interceptor.rejected); + }); + + this.interceptors.response.forEach(function pushResponseInterceptors(interceptor) { + chain.push(interceptor.fulfilled, interceptor.rejected); + }); + + while (chain.length) { + promise = promise.then(chain.shift(), chain.shift()); + } + + return promise; +}; + +Axios.prototype.getUri = function getUri(config) { + config = mergeConfig(this.defaults, config); + return buildURL(config.url, config.params, config.paramsSerializer).replace(/^\?/, ''); +}; + +// Provide aliases for supported request methods +utils.forEach(['delete', 'get', 'head', 'options'], function forEachMethodNoData(method) { + /*eslint func-names:0*/ + Axios.prototype[method] = function(url, config) { + return this.request(utils.merge(config || {}, { + method: method, + url: url + })); + }; +}); + +utils.forEach(['post', 'put', 'patch'], function forEachMethodWithData(method) { + /*eslint func-names:0*/ + Axios.prototype[method] = function(url, data, config) { + return this.request(utils.merge(config || {}, { + method: method, + url: url, + data: data + })); + }; +}); + +module.exports = Axios; + + +/***/ }), + +/***/ "./node_modules/axios/lib/core/InterceptorManager.js": +/*!***********************************************************!*\ + !*** ./node_modules/axios/lib/core/InterceptorManager.js ***! + \***********************************************************/ +/*! no static exports found */ +/***/ (function(module, exports, __webpack_require__) { + +"use strict"; + + +var utils = __webpack_require__(/*! ./../utils */ "./node_modules/axios/lib/utils.js"); + +function InterceptorManager() { + this.handlers = []; +} + +/** + * Add a new interceptor to the stack + * + * @param {Function} fulfilled The function to handle `then` for a `Promise` + * @param {Function} rejected The function to handle `reject` for a `Promise` + * + * @return {Number} An ID used to remove interceptor later + */ +InterceptorManager.prototype.use = function use(fulfilled, rejected) { + this.handlers.push({ + fulfilled: fulfilled, + rejected: rejected + }); + return this.handlers.length - 1; +}; + +/** + * Remove an interceptor from the stack + * + * @param {Number} id The ID that was returned by `use` + */ +InterceptorManager.prototype.eject = function eject(id) { + if (this.handlers[id]) { + this.handlers[id] = null; + } +}; + +/** + * Iterate over all the registered interceptors + * + * This method is particularly useful for skipping over any + * interceptors that may have become `null` calling `eject`. + * + * @param {Function} fn The function to call for each interceptor + */ +InterceptorManager.prototype.forEach = function forEach(fn) { + utils.forEach(this.handlers, function forEachHandler(h) { + if (h !== null) { + fn(h); + } + }); +}; + +module.exports = InterceptorManager; + + +/***/ }), + +/***/ "./node_modules/axios/lib/core/createError.js": +/*!****************************************************!*\ + !*** ./node_modules/axios/lib/core/createError.js ***! + \****************************************************/ +/*! no static exports found */ +/***/ (function(module, exports, __webpack_require__) { + +"use strict"; + + +var enhanceError = __webpack_require__(/*! ./enhanceError */ "./node_modules/axios/lib/core/enhanceError.js"); + +/** + * Create an Error with the specified message, config, error code, request and response. + * + * @param {string} message The error message. + * @param {Object} config The config. + * @param {string} [code] The error code (for example, 'ECONNABORTED'). + * @param {Object} [request] The request. + * @param {Object} [response] The response. + * @returns {Error} The created error. + */ +module.exports = function createError(message, config, code, request, response) { + var error = new Error(message); + return enhanceError(error, config, code, request, response); +}; + + +/***/ }), + +/***/ "./node_modules/axios/lib/core/dispatchRequest.js": +/*!********************************************************!*\ + !*** ./node_modules/axios/lib/core/dispatchRequest.js ***! + \********************************************************/ +/*! no static exports found */ +/***/ (function(module, exports, __webpack_require__) { + +"use strict"; + + +var utils = __webpack_require__(/*! ./../utils */ "./node_modules/axios/lib/utils.js"); +var transformData = __webpack_require__(/*! ./transformData */ "./node_modules/axios/lib/core/transformData.js"); +var isCancel = __webpack_require__(/*! ../cancel/isCancel */ "./node_modules/axios/lib/cancel/isCancel.js"); +var defaults = __webpack_require__(/*! ../defaults */ "./node_modules/axios/lib/defaults.js"); +var isAbsoluteURL = __webpack_require__(/*! ./../helpers/isAbsoluteURL */ "./node_modules/axios/lib/helpers/isAbsoluteURL.js"); +var combineURLs = __webpack_require__(/*! ./../helpers/combineURLs */ "./node_modules/axios/lib/helpers/combineURLs.js"); + +/** + * Throws a `Cancel` if cancellation has been requested. + */ +function throwIfCancellationRequested(config) { + if (config.cancelToken) { + config.cancelToken.throwIfRequested(); + } +} + +/** + * Dispatch a request to the server using the configured adapter. + * + * @param {object} config The config that is to be used for the request + * @returns {Promise} The Promise to be fulfilled + */ +module.exports = function dispatchRequest(config) { + throwIfCancellationRequested(config); + + // Support baseURL config + if (config.baseURL && !isAbsoluteURL(config.url)) { + config.url = combineURLs(config.baseURL, config.url); + } + + // Ensure headers exist + config.headers = config.headers || {}; + + // Transform request data + config.data = transformData( + config.data, + config.headers, + config.transformRequest + ); + + // Flatten headers + config.headers = utils.merge( + config.headers.common || {}, + config.headers[config.method] || {}, + config.headers || {} + ); + + utils.forEach( + ['delete', 'get', 'head', 'post', 'put', 'patch', 'common'], + function cleanHeaderConfig(method) { + delete config.headers[method]; + } + ); + + var adapter = config.adapter || defaults.adapter; + + return adapter(config).then(function onAdapterResolution(response) { + throwIfCancellationRequested(config); + + // Transform response data + response.data = transformData( + response.data, + response.headers, + config.transformResponse + ); + + return response; + }, function onAdapterRejection(reason) { + if (!isCancel(reason)) { + throwIfCancellationRequested(config); + + // Transform response data + if (reason && reason.response) { + reason.response.data = transformData( + reason.response.data, + reason.response.headers, + config.transformResponse + ); + } + } + + return Promise.reject(reason); + }); +}; + + +/***/ }), + +/***/ "./node_modules/axios/lib/core/enhanceError.js": +/*!*****************************************************!*\ + !*** ./node_modules/axios/lib/core/enhanceError.js ***! + \*****************************************************/ +/*! no static exports found */ +/***/ (function(module, exports, __webpack_require__) { + +"use strict"; + + +/** + * Update an Error with the specified config, error code, and response. + * + * @param {Error} error The error to update. + * @param {Object} config The config. + * @param {string} [code] The error code (for example, 'ECONNABORTED'). + * @param {Object} [request] The request. + * @param {Object} [response] The response. + * @returns {Error} The error. + */ +module.exports = function enhanceError(error, config, code, request, response) { + error.config = config; + if (code) { + error.code = code; + } + + error.request = request; + error.response = response; + error.isAxiosError = true; + + error.toJSON = function() { + return { + // Standard + message: this.message, + name: this.name, + // Microsoft + description: this.description, + number: this.number, + // Mozilla + fileName: this.fileName, + lineNumber: this.lineNumber, + columnNumber: this.columnNumber, + stack: this.stack, + // Axios + config: this.config, + code: this.code + }; + }; + return error; +}; + + +/***/ }), + +/***/ "./node_modules/axios/lib/core/mergeConfig.js": +/*!****************************************************!*\ + !*** ./node_modules/axios/lib/core/mergeConfig.js ***! + \****************************************************/ +/*! no static exports found */ +/***/ (function(module, exports, __webpack_require__) { + +"use strict"; + + +var utils = __webpack_require__(/*! ../utils */ "./node_modules/axios/lib/utils.js"); + +/** + * Config-specific merge-function which creates a new config-object + * by merging two configuration objects together. + * + * @param {Object} config1 + * @param {Object} config2 + * @returns {Object} New object resulting from merging config2 to config1 + */ +module.exports = function mergeConfig(config1, config2) { + // eslint-disable-next-line no-param-reassign + config2 = config2 || {}; + var config = {}; + + utils.forEach(['url', 'method', 'params', 'data'], function valueFromConfig2(prop) { + if (typeof config2[prop] !== 'undefined') { + config[prop] = config2[prop]; + } + }); + + utils.forEach(['headers', 'auth', 'proxy'], function mergeDeepProperties(prop) { + if (utils.isObject(config2[prop])) { + config[prop] = utils.deepMerge(config1[prop], config2[prop]); + } else if (typeof config2[prop] !== 'undefined') { + config[prop] = config2[prop]; + } else if (utils.isObject(config1[prop])) { + config[prop] = utils.deepMerge(config1[prop]); + } else if (typeof config1[prop] !== 'undefined') { + config[prop] = config1[prop]; + } + }); + + utils.forEach([ + 'baseURL', 'transformRequest', 'transformResponse', 'paramsSerializer', + 'timeout', 'withCredentials', 'adapter', 'responseType', 'xsrfCookieName', + 'xsrfHeaderName', 'onUploadProgress', 'onDownloadProgress', 'maxContentLength', + 'validateStatus', 'maxRedirects', 'httpAgent', 'httpsAgent', 'cancelToken', + 'socketPath' + ], function defaultToConfig2(prop) { + if (typeof config2[prop] !== 'undefined') { + config[prop] = config2[prop]; + } else if (typeof config1[prop] !== 'undefined') { + config[prop] = config1[prop]; + } + }); + + return config; +}; + + +/***/ }), + +/***/ "./node_modules/axios/lib/core/settle.js": +/*!***********************************************!*\ + !*** ./node_modules/axios/lib/core/settle.js ***! + \***********************************************/ +/*! no static exports found */ +/***/ (function(module, exports, __webpack_require__) { + +"use strict"; + + +var createError = __webpack_require__(/*! ./createError */ "./node_modules/axios/lib/core/createError.js"); + +/** + * Resolve or reject a Promise based on response status. + * + * @param {Function} resolve A function that resolves the promise. + * @param {Function} reject A function that rejects the promise. + * @param {object} response The response. + */ +module.exports = function settle(resolve, reject, response) { + var validateStatus = response.config.validateStatus; + if (!validateStatus || validateStatus(response.status)) { + resolve(response); + } else { + reject(createError( + 'Request failed with status code ' + response.status, + response.config, + null, + response.request, + response + )); + } +}; + + +/***/ }), + +/***/ "./node_modules/axios/lib/core/transformData.js": +/*!******************************************************!*\ + !*** ./node_modules/axios/lib/core/transformData.js ***! + \******************************************************/ +/*! no static exports found */ +/***/ (function(module, exports, __webpack_require__) { + +"use strict"; + + +var utils = __webpack_require__(/*! ./../utils */ "./node_modules/axios/lib/utils.js"); + +/** + * Transform the data for a request or a response + * + * @param {Object|String} data The data to be transformed + * @param {Array} headers The headers for the request or response + * @param {Array|Function} fns A single function or Array of functions + * @returns {*} The resulting transformed data + */ +module.exports = function transformData(data, headers, fns) { + /*eslint no-param-reassign:0*/ + utils.forEach(fns, function transform(fn) { + data = fn(data, headers); + }); + + return data; +}; + + +/***/ }), + +/***/ "./node_modules/axios/lib/defaults.js": +/*!********************************************!*\ + !*** ./node_modules/axios/lib/defaults.js ***! + \********************************************/ +/*! no static exports found */ +/***/ (function(module, exports, __webpack_require__) { + +"use strict"; +/* WEBPACK VAR INJECTION */(function(process) { + +var utils = __webpack_require__(/*! ./utils */ "./node_modules/axios/lib/utils.js"); +var normalizeHeaderName = __webpack_require__(/*! ./helpers/normalizeHeaderName */ "./node_modules/axios/lib/helpers/normalizeHeaderName.js"); + +var DEFAULT_CONTENT_TYPE = { + 'Content-Type': 'application/x-www-form-urlencoded' +}; + +function setContentTypeIfUnset(headers, value) { + if (!utils.isUndefined(headers) && utils.isUndefined(headers['Content-Type'])) { + headers['Content-Type'] = value; + } +} + +function getDefaultAdapter() { + var adapter; + // Only Node.JS has a process variable that is of [[Class]] process + if (typeof process !== 'undefined' && Object.prototype.toString.call(process) === '[object process]') { + // For node use HTTP adapter + adapter = __webpack_require__(/*! ./adapters/http */ "./node_modules/axios/lib/adapters/xhr.js"); + } else if (typeof XMLHttpRequest !== 'undefined') { + // For browsers use XHR adapter + adapter = __webpack_require__(/*! ./adapters/xhr */ "./node_modules/axios/lib/adapters/xhr.js"); + } + return adapter; +} + +var defaults = { + adapter: getDefaultAdapter(), + + transformRequest: [function transformRequest(data, headers) { + normalizeHeaderName(headers, 'Accept'); + normalizeHeaderName(headers, 'Content-Type'); + if (utils.isFormData(data) || + utils.isArrayBuffer(data) || + utils.isBuffer(data) || + utils.isStream(data) || + utils.isFile(data) || + utils.isBlob(data) + ) { + return data; + } + if (utils.isArrayBufferView(data)) { + return data.buffer; + } + if (utils.isURLSearchParams(data)) { + setContentTypeIfUnset(headers, 'application/x-www-form-urlencoded;charset=utf-8'); + return data.toString(); + } + if (utils.isObject(data)) { + setContentTypeIfUnset(headers, 'application/json;charset=utf-8'); + return JSON.stringify(data); + } + return data; + }], + + transformResponse: [function transformResponse(data) { + /*eslint no-param-reassign:0*/ + if (typeof data === 'string') { + try { + data = JSON.parse(data); + } catch (e) { /* Ignore */ } + } + return data; + }], + + /** + * A timeout in milliseconds to abort a request. If set to 0 (default) a + * timeout is not created. + */ + timeout: 0, + + xsrfCookieName: 'XSRF-TOKEN', + xsrfHeaderName: 'X-XSRF-TOKEN', + + maxContentLength: -1, + + validateStatus: function validateStatus(status) { + return status >= 200 && status < 300; + } +}; + +defaults.headers = { + common: { + 'Accept': 'application/json, text/plain, */*' + } +}; + +utils.forEach(['delete', 'get', 'head'], function forEachMethodNoData(method) { + defaults.headers[method] = {}; +}); + +utils.forEach(['post', 'put', 'patch'], function forEachMethodWithData(method) { + defaults.headers[method] = utils.merge(DEFAULT_CONTENT_TYPE); +}); + +module.exports = defaults; + +/* WEBPACK VAR INJECTION */}.call(this, __webpack_require__(/*! ./../../process/browser.js */ "./node_modules/process/browser.js"))) + +/***/ }), + +/***/ "./node_modules/axios/lib/helpers/bind.js": +/*!************************************************!*\ + !*** ./node_modules/axios/lib/helpers/bind.js ***! + \************************************************/ +/*! no static exports found */ +/***/ (function(module, exports, __webpack_require__) { + +"use strict"; + + +module.exports = function bind(fn, thisArg) { + return function wrap() { + var args = new Array(arguments.length); + for (var i = 0; i < args.length; i++) { + args[i] = arguments[i]; + } + return fn.apply(thisArg, args); + }; +}; + + +/***/ }), + +/***/ "./node_modules/axios/lib/helpers/buildURL.js": +/*!****************************************************!*\ + !*** ./node_modules/axios/lib/helpers/buildURL.js ***! + \****************************************************/ +/*! no static exports found */ +/***/ (function(module, exports, __webpack_require__) { + +"use strict"; + + +var utils = __webpack_require__(/*! ./../utils */ "./node_modules/axios/lib/utils.js"); + +function encode(val) { + return encodeURIComponent(val). + replace(/%40/gi, '@'). + replace(/%3A/gi, ':'). + replace(/%24/g, '$'). + replace(/%2C/gi, ','). + replace(/%20/g, '+'). + replace(/%5B/gi, '['). + replace(/%5D/gi, ']'); +} + +/** + * Build a URL by appending params to the end + * + * @param {string} url The base of the url (e.g., http://www.google.com) + * @param {object} [params] The params to be appended + * @returns {string} The formatted url + */ +module.exports = function buildURL(url, params, paramsSerializer) { + /*eslint no-param-reassign:0*/ + if (!params) { + return url; + } + + var serializedParams; + if (paramsSerializer) { + serializedParams = paramsSerializer(params); + } else if (utils.isURLSearchParams(params)) { + serializedParams = params.toString(); + } else { + var parts = []; + + utils.forEach(params, function serialize(val, key) { + if (val === null || typeof val === 'undefined') { + return; + } + + if (utils.isArray(val)) { + key = key + '[]'; + } else { + val = [val]; + } + + utils.forEach(val, function parseValue(v) { + if (utils.isDate(v)) { + v = v.toISOString(); + } else if (utils.isObject(v)) { + v = JSON.stringify(v); + } + parts.push(encode(key) + '=' + encode(v)); + }); + }); + + serializedParams = parts.join('&'); + } + + if (serializedParams) { + var hashmarkIndex = url.indexOf('#'); + if (hashmarkIndex !== -1) { + url = url.slice(0, hashmarkIndex); + } + + url += (url.indexOf('?') === -1 ? '?' : '&') + serializedParams; + } + + return url; +}; + + +/***/ }), + +/***/ "./node_modules/axios/lib/helpers/combineURLs.js": +/*!*******************************************************!*\ + !*** ./node_modules/axios/lib/helpers/combineURLs.js ***! + \*******************************************************/ +/*! no static exports found */ +/***/ (function(module, exports, __webpack_require__) { + +"use strict"; + + +/** + * Creates a new URL by combining the specified URLs + * + * @param {string} baseURL The base URL + * @param {string} relativeURL The relative URL + * @returns {string} The combined URL + */ +module.exports = function combineURLs(baseURL, relativeURL) { + return relativeURL + ? baseURL.replace(/\/+$/, '') + '/' + relativeURL.replace(/^\/+/, '') + : baseURL; +}; + + +/***/ }), + +/***/ "./node_modules/axios/lib/helpers/cookies.js": +/*!***************************************************!*\ + !*** ./node_modules/axios/lib/helpers/cookies.js ***! + \***************************************************/ +/*! no static exports found */ +/***/ (function(module, exports, __webpack_require__) { + +"use strict"; + + +var utils = __webpack_require__(/*! ./../utils */ "./node_modules/axios/lib/utils.js"); + +module.exports = ( + utils.isStandardBrowserEnv() ? + + // Standard browser envs support document.cookie + (function standardBrowserEnv() { + return { + write: function write(name, value, expires, path, domain, secure) { + var cookie = []; + cookie.push(name + '=' + encodeURIComponent(value)); + + if (utils.isNumber(expires)) { + cookie.push('expires=' + new Date(expires).toGMTString()); + } + + if (utils.isString(path)) { + cookie.push('path=' + path); + } + + if (utils.isString(domain)) { + cookie.push('domain=' + domain); + } + + if (secure === true) { + cookie.push('secure'); + } + + document.cookie = cookie.join('; '); + }, + + read: function read(name) { + var match = document.cookie.match(new RegExp('(^|;\\s*)(' + name + ')=([^;]*)')); + return (match ? decodeURIComponent(match[3]) : null); + }, + + remove: function remove(name) { + this.write(name, '', Date.now() - 86400000); + } + }; + })() : + + // Non standard browser env (web workers, react-native) lack needed support. + (function nonStandardBrowserEnv() { + return { + write: function write() {}, + read: function read() { return null; }, + remove: function remove() {} + }; + })() +); + + +/***/ }), + +/***/ "./node_modules/axios/lib/helpers/isAbsoluteURL.js": +/*!*********************************************************!*\ + !*** ./node_modules/axios/lib/helpers/isAbsoluteURL.js ***! + \*********************************************************/ +/*! no static exports found */ +/***/ (function(module, exports, __webpack_require__) { + +"use strict"; + + +/** + * Determines whether the specified URL is absolute + * + * @param {string} url The URL to test + * @returns {boolean} True if the specified URL is absolute, otherwise false + */ +module.exports = function isAbsoluteURL(url) { + // A URL is considered absolute if it begins with "<scheme>://" or "//" (protocol-relative URL). + // RFC 3986 defines scheme name as a sequence of characters beginning with a letter and followed + // by any combination of letters, digits, plus, period, or hyphen. + return /^([a-z][a-z\d\+\-\.]*:)?\/\//i.test(url); +}; + + +/***/ }), + +/***/ "./node_modules/axios/lib/helpers/isURLSameOrigin.js": +/*!***********************************************************!*\ + !*** ./node_modules/axios/lib/helpers/isURLSameOrigin.js ***! + \***********************************************************/ +/*! no static exports found */ +/***/ (function(module, exports, __webpack_require__) { + +"use strict"; + + +var utils = __webpack_require__(/*! ./../utils */ "./node_modules/axios/lib/utils.js"); + +module.exports = ( + utils.isStandardBrowserEnv() ? + + // Standard browser envs have full support of the APIs needed to test + // whether the request URL is of the same origin as current location. + (function standardBrowserEnv() { + var msie = /(msie|trident)/i.test(navigator.userAgent); + var urlParsingNode = document.createElement('a'); + var originURL; + + /** + * Parse a URL to discover it's components + * + * @param {String} url The URL to be parsed + * @returns {Object} + */ + function resolveURL(url) { + var href = url; + + if (msie) { + // IE needs attribute set twice to normalize properties + urlParsingNode.setAttribute('href', href); + href = urlParsingNode.href; + } + + urlParsingNode.setAttribute('href', href); + + // urlParsingNode provides the UrlUtils interface - http://url.spec.whatwg.org/#urlutils + return { + href: urlParsingNode.href, + protocol: urlParsingNode.protocol ? urlParsingNode.protocol.replace(/:$/, '') : '', + host: urlParsingNode.host, + search: urlParsingNode.search ? urlParsingNode.search.replace(/^\?/, '') : '', + hash: urlParsingNode.hash ? urlParsingNode.hash.replace(/^#/, '') : '', + hostname: urlParsingNode.hostname, + port: urlParsingNode.port, + pathname: (urlParsingNode.pathname.charAt(0) === '/') ? + urlParsingNode.pathname : + '/' + urlParsingNode.pathname + }; + } + + originURL = resolveURL(window.location.href); + + /** + * Determine if a URL shares the same origin as the current location + * + * @param {String} requestURL The URL to test + * @returns {boolean} True if URL shares the same origin, otherwise false + */ + return function isURLSameOrigin(requestURL) { + var parsed = (utils.isString(requestURL)) ? resolveURL(requestURL) : requestURL; + return (parsed.protocol === originURL.protocol && + parsed.host === originURL.host); + }; + })() : + + // Non standard browser envs (web workers, react-native) lack needed support. + (function nonStandardBrowserEnv() { + return function isURLSameOrigin() { + return true; + }; + })() +); + + +/***/ }), + +/***/ "./node_modules/axios/lib/helpers/normalizeHeaderName.js": +/*!***************************************************************!*\ + !*** ./node_modules/axios/lib/helpers/normalizeHeaderName.js ***! + \***************************************************************/ +/*! no static exports found */ +/***/ (function(module, exports, __webpack_require__) { + +"use strict"; + + +var utils = __webpack_require__(/*! ../utils */ "./node_modules/axios/lib/utils.js"); + +module.exports = function normalizeHeaderName(headers, normalizedName) { + utils.forEach(headers, function processHeader(value, name) { + if (name !== normalizedName && name.toUpperCase() === normalizedName.toUpperCase()) { + headers[normalizedName] = value; + delete headers[name]; + } + }); +}; + + +/***/ }), + +/***/ "./node_modules/axios/lib/helpers/parseHeaders.js": +/*!********************************************************!*\ + !*** ./node_modules/axios/lib/helpers/parseHeaders.js ***! + \********************************************************/ +/*! no static exports found */ +/***/ (function(module, exports, __webpack_require__) { + +"use strict"; + + +var utils = __webpack_require__(/*! ./../utils */ "./node_modules/axios/lib/utils.js"); + +// Headers whose duplicates are ignored by node +// c.f. https://nodejs.org/api/http.html#http_message_headers +var ignoreDuplicateOf = [ + 'age', 'authorization', 'content-length', 'content-type', 'etag', + 'expires', 'from', 'host', 'if-modified-since', 'if-unmodified-since', + 'last-modified', 'location', 'max-forwards', 'proxy-authorization', + 'referer', 'retry-after', 'user-agent' +]; + +/** + * Parse headers into an object + * + * ``` + * Date: Wed, 27 Aug 2014 08:58:49 GMT + * Content-Type: application/json + * Connection: keep-alive + * Transfer-Encoding: chunked + * ``` + * + * @param {String} headers Headers needing to be parsed + * @returns {Object} Headers parsed into an object + */ +module.exports = function parseHeaders(headers) { + var parsed = {}; + var key; + var val; + var i; + + if (!headers) { return parsed; } + + utils.forEach(headers.split('\n'), function parser(line) { + i = line.indexOf(':'); + key = utils.trim(line.substr(0, i)).toLowerCase(); + val = utils.trim(line.substr(i + 1)); + + if (key) { + if (parsed[key] && ignoreDuplicateOf.indexOf(key) >= 0) { + return; + } + if (key === 'set-cookie') { + parsed[key] = (parsed[key] ? parsed[key] : []).concat([val]); + } else { + parsed[key] = parsed[key] ? parsed[key] + ', ' + val : val; + } + } + }); + + return parsed; +}; + + +/***/ }), + +/***/ "./node_modules/axios/lib/helpers/spread.js": +/*!**************************************************!*\ + !*** ./node_modules/axios/lib/helpers/spread.js ***! + \**************************************************/ +/*! no static exports found */ +/***/ (function(module, exports, __webpack_require__) { + +"use strict"; + + +/** + * Syntactic sugar for invoking a function and expanding an array for arguments. + * + * Common use case would be to use `Function.prototype.apply`. + * + * ```js + * function f(x, y, z) {} + * var args = [1, 2, 3]; + * f.apply(null, args); + * ``` + * + * With `spread` this example can be re-written. + * + * ```js + * spread(function(x, y, z) {})([1, 2, 3]); + * ``` + * + * @param {Function} callback + * @returns {Function} + */ +module.exports = function spread(callback) { + return function wrap(arr) { + return callback.apply(null, arr); + }; +}; + + +/***/ }), + +/***/ "./node_modules/axios/lib/utils.js": +/*!*****************************************!*\ + !*** ./node_modules/axios/lib/utils.js ***! + \*****************************************/ +/*! no static exports found */ +/***/ (function(module, exports, __webpack_require__) { + +"use strict"; + + +var bind = __webpack_require__(/*! ./helpers/bind */ "./node_modules/axios/lib/helpers/bind.js"); +var isBuffer = __webpack_require__(/*! is-buffer */ "./node_modules/is-buffer/index.js"); + +/*global toString:true*/ + +// utils is a library of generic helper functions non-specific to axios + +var toString = Object.prototype.toString; + +/** + * Determine if a value is an Array + * + * @param {Object} val The value to test + * @returns {boolean} True if value is an Array, otherwise false + */ +function isArray(val) { + return toString.call(val) === '[object Array]'; +} + +/** + * Determine if a value is an ArrayBuffer + * + * @param {Object} val The value to test + * @returns {boolean} True if value is an ArrayBuffer, otherwise false + */ +function isArrayBuffer(val) { + return toString.call(val) === '[object ArrayBuffer]'; +} + +/** + * Determine if a value is a FormData + * + * @param {Object} val The value to test + * @returns {boolean} True if value is an FormData, otherwise false + */ +function isFormData(val) { + return (typeof FormData !== 'undefined') && (val instanceof FormData); +} + +/** + * Determine if a value is a view on an ArrayBuffer + * + * @param {Object} val The value to test + * @returns {boolean} True if value is a view on an ArrayBuffer, otherwise false + */ +function isArrayBufferView(val) { + var result; + if ((typeof ArrayBuffer !== 'undefined') && (ArrayBuffer.isView)) { + result = ArrayBuffer.isView(val); + } else { + result = (val) && (val.buffer) && (val.buffer instanceof ArrayBuffer); + } + return result; +} + +/** + * Determine if a value is a String + * + * @param {Object} val The value to test + * @returns {boolean} True if value is a String, otherwise false + */ +function isString(val) { + return typeof val === 'string'; +} + +/** + * Determine if a value is a Number + * + * @param {Object} val The value to test + * @returns {boolean} True if value is a Number, otherwise false + */ +function isNumber(val) { + return typeof val === 'number'; +} + +/** + * Determine if a value is undefined + * + * @param {Object} val The value to test + * @returns {boolean} True if the value is undefined, otherwise false + */ +function isUndefined(val) { + return typeof val === 'undefined'; +} + +/** + * Determine if a value is an Object + * + * @param {Object} val The value to test + * @returns {boolean} True if value is an Object, otherwise false + */ +function isObject(val) { + return val !== null && typeof val === 'object'; +} + +/** + * Determine if a value is a Date + * + * @param {Object} val The value to test + * @returns {boolean} True if value is a Date, otherwise false + */ +function isDate(val) { + return toString.call(val) === '[object Date]'; +} + +/** + * Determine if a value is a File + * + * @param {Object} val The value to test + * @returns {boolean} True if value is a File, otherwise false + */ +function isFile(val) { + return toString.call(val) === '[object File]'; +} + +/** + * Determine if a value is a Blob + * + * @param {Object} val The value to test + * @returns {boolean} True if value is a Blob, otherwise false + */ +function isBlob(val) { + return toString.call(val) === '[object Blob]'; +} + +/** + * Determine if a value is a Function + * + * @param {Object} val The value to test + * @returns {boolean} True if value is a Function, otherwise false + */ +function isFunction(val) { + return toString.call(val) === '[object Function]'; +} + +/** + * Determine if a value is a Stream + * + * @param {Object} val The value to test + * @returns {boolean} True if value is a Stream, otherwise false + */ +function isStream(val) { + return isObject(val) && isFunction(val.pipe); +} + +/** + * Determine if a value is a URLSearchParams object + * + * @param {Object} val The value to test + * @returns {boolean} True if value is a URLSearchParams object, otherwise false + */ +function isURLSearchParams(val) { + return typeof URLSearchParams !== 'undefined' && val instanceof URLSearchParams; +} + +/** + * Trim excess whitespace off the beginning and end of a string + * + * @param {String} str The String to trim + * @returns {String} The String freed of excess whitespace + */ +function trim(str) { + return str.replace(/^\s*/, '').replace(/\s*$/, ''); +} + +/** + * Determine if we're running in a standard browser environment + * + * This allows axios to run in a web worker, and react-native. + * Both environments support XMLHttpRequest, but not fully standard globals. + * + * web workers: + * typeof window -> undefined + * typeof document -> undefined + * + * react-native: + * navigator.product -> 'ReactNative' + * nativescript + * navigator.product -> 'NativeScript' or 'NS' + */ +function isStandardBrowserEnv() { + if (typeof navigator !== 'undefined' && (navigator.product === 'ReactNative' || + navigator.product === 'NativeScript' || + navigator.product === 'NS')) { + return false; + } + return ( + typeof window !== 'undefined' && + typeof document !== 'undefined' + ); +} + +/** + * Iterate over an Array or an Object invoking a function for each item. + * + * If `obj` is an Array callback will be called passing + * the value, index, and complete array for each item. + * + * If 'obj' is an Object callback will be called passing + * the value, key, and complete object for each property. + * + * @param {Object|Array} obj The object to iterate + * @param {Function} fn The callback to invoke for each item + */ +function forEach(obj, fn) { + // Don't bother if no value provided + if (obj === null || typeof obj === 'undefined') { + return; + } + + // Force an array if not already something iterable + if (typeof obj !== 'object') { + /*eslint no-param-reassign:0*/ + obj = [obj]; + } + + if (isArray(obj)) { + // Iterate over array values + for (var i = 0, l = obj.length; i < l; i++) { + fn.call(null, obj[i], i, obj); + } + } else { + // Iterate over object keys + for (var key in obj) { + if (Object.prototype.hasOwnProperty.call(obj, key)) { + fn.call(null, obj[key], key, obj); + } + } + } +} + +/** + * Accepts varargs expecting each argument to be an object, then + * immutably merges the properties of each object and returns result. + * + * When multiple objects contain the same key the later object in + * the arguments list will take precedence. + * + * Example: + * + * ```js + * var result = merge({foo: 123}, {foo: 456}); + * console.log(result.foo); // outputs 456 + * ``` + * + * @param {Object} obj1 Object to merge + * @returns {Object} Result of all merge properties + */ +function merge(/* obj1, obj2, obj3, ... */) { + var result = {}; + function assignValue(val, key) { + if (typeof result[key] === 'object' && typeof val === 'object') { + result[key] = merge(result[key], val); + } else { + result[key] = val; + } + } + + for (var i = 0, l = arguments.length; i < l; i++) { + forEach(arguments[i], assignValue); + } + return result; +} + +/** + * Function equal to merge with the difference being that no reference + * to original objects is kept. + * + * @see merge + * @param {Object} obj1 Object to merge + * @returns {Object} Result of all merge properties + */ +function deepMerge(/* obj1, obj2, obj3, ... */) { + var result = {}; + function assignValue(val, key) { + if (typeof result[key] === 'object' && typeof val === 'object') { + result[key] = deepMerge(result[key], val); + } else if (typeof val === 'object') { + result[key] = deepMerge({}, val); + } else { + result[key] = val; + } + } + + for (var i = 0, l = arguments.length; i < l; i++) { + forEach(arguments[i], assignValue); + } + return result; +} + +/** + * Extends object a by mutably adding to it the properties of object b. + * + * @param {Object} a The object to be extended + * @param {Object} b The object to copy properties from + * @param {Object} thisArg The object to bind function to + * @return {Object} The resulting value of object a + */ +function extend(a, b, thisArg) { + forEach(b, function assignValue(val, key) { + if (thisArg && typeof val === 'function') { + a[key] = bind(val, thisArg); + } else { + a[key] = val; + } + }); + return a; +} + +module.exports = { + isArray: isArray, + isArrayBuffer: isArrayBuffer, + isBuffer: isBuffer, + isFormData: isFormData, + isArrayBufferView: isArrayBufferView, + isString: isString, + isNumber: isNumber, + isObject: isObject, + isUndefined: isUndefined, + isDate: isDate, + isFile: isFile, + isBlob: isBlob, + isFunction: isFunction, + isStream: isStream, + isURLSearchParams: isURLSearchParams, + isStandardBrowserEnv: isStandardBrowserEnv, + forEach: forEach, + merge: merge, + deepMerge: deepMerge, + extend: extend, + trim: trim +}; + + +/***/ }), + +/***/ "./node_modules/babel-loader/lib/index.js?!./node_modules/vue-loader/lib/index.js?!./resources/js/components/chessTable.vue?vue&type=script&lang=js&": +/*!*********************************************************************************************************************************************************************!*\ + !*** ./node_modules/babel-loader/lib??ref--4-0!./node_modules/vue-loader/lib??vue-loader-options!./resources/js/components/chessTable.vue?vue&type=script&lang=js& ***! + \*********************************************************************************************************************************************************************/ +/*! exports provided: default */ +/***/ (function(module, __webpack_exports__, __webpack_require__) { + +"use strict"; +__webpack_require__.r(__webpack_exports__); +/* harmony import */ var vue_chessboard__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! vue-chessboard */ "./node_modules/vue-chessboard/index.js"); +/* harmony import */ var jquery__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! jquery */ "./node_modules/jquery/dist/jquery.js"); +/* harmony import */ var jquery__WEBPACK_IMPORTED_MODULE_1___default = /*#__PURE__*/__webpack_require__.n(jquery__WEBPACK_IMPORTED_MODULE_1__); +// +// +// +// +// +// +// + + +/* harmony default export */ __webpack_exports__["default"] = ({ + name: 'App', + components: { + chessboard: vue_chessboard__WEBPACK_IMPORTED_MODULE_0__["chessboard"] + }, + data: function data() { + return { + currentPosition: {}, + showThreats: false, + positionNumber: 0, + started: false, + isStartModalActive: true, + positionInfo: {} + }; + }, + methods: { + showInfo: function showInfo(info) { + this.positionInfo = info; + } + } +}); + +/***/ }), + +/***/ "./node_modules/css-loader/index.js?!./node_modules/postcss-loader/src/index.js?!./node_modules/vue-chessboard/dist/vue-chessboard.css": +/*!*********************************************************************************************************************************************!*\ + !*** ./node_modules/css-loader??ref--6-1!./node_modules/postcss-loader/src??ref--6-2!./node_modules/vue-chessboard/dist/vue-chessboard.css ***! + \*********************************************************************************************************************************************/ +/*! no static exports found */ +/***/ (function(module, exports, __webpack_require__) { + +exports = module.exports = __webpack_require__(/*! ../../css-loader/lib/css-base.js */ "./node_modules/css-loader/lib/css-base.js")(false); +// imports + + +// module +exports.push([module.i, "/*\n * Chessground base css properties.\n *\n * You need to include the css files in themes folder in order to have the\n * board and pieces displayed!\n */\n.cg-board-wrap {\n width: 320px;\n height: 320px;\n position: relative;\n display: block;\n}\n.cg-board {\n position: absolute;\n top: 0;\n left: 0;\n width: 100%;\n height: 100%;\n -webkit-user-select: none;\n -moz-user-select: none;\n -ms-user-select: none;\n user-select: none;\n line-height: 0;\n background-size: cover;\n cursor: pointer;\n}\n.cg-board square {\n position: absolute;\n top: 0;\n left: 0;\n width: 12.5%;\n height: 12.5%;\n}\n.cg-board square.move-dest {\n background: radial-gradient(rgba(20, 85, 30, 0.5) 22%, #208530 0, rgba(0, 0, 0, 0.3) 0, rgba(0, 0, 0, 0) 0);\n}\n.cg-board square.premove-dest {\n background: radial-gradient(rgba(20, 30, 85, 0.5) 22%, #203085 0, rgba(0, 0, 0, 0.3) 0, rgba(0, 0, 0, 0) 0);\n}\n.cg-board square.oc.move-dest {\n background: radial-gradient(transparent 0%, transparent 80%, rgba(20, 85, 0, 0.3) 80%);\n}\n.cg-board square.oc.premove-dest {\n background: radial-gradient(transparent 0%, transparent 80%, rgba(20, 30, 85, 0.2) 80%);\n}\n.cg-board .cg-square.move-dest.drag-over,\n.cg-board .cg-square.premove-dest.drag-over {\n box-shadow: inset 0 0 10px 2px rgba(216, 85, 0, 0.9);\n}\n.cg-board square.last-move {\n will-change: transform;\n background-color: rgba(155, 199, 0, 0.41);\n}\n.cg-board square.selected {\n background-color: rgba(20, 85, 30, 0.5);\n}\n.cg-board square.check {\n background: radial-gradient(ellipse at center, rgba(255, 0, 0, 1) 0%, rgba(231, 0, 0, 1) 25%, rgba(169, 0, 0, 0) 89%, rgba(158, 0, 0, 0) 100%);\n}\n.cg-board square.current-premove {\n background-color: rgba(20, 30, 85, 0.5);\n}\n.cg-board piece {\n position: absolute;\n top: 0;\n left: 0;\n width: 12.5%;\n height: 12.5%;\n background-size: cover;\n z-index: 2;\n will-change: transform;\n}\n.cg-board piece.dragging {\n cursor: move;\n z-index: 9;\n}\n.cg-board piece.anim {\n z-index: 8;\n}\n.cg-board piece.fading {\n z-index: 1;\n opacity: 0.5;\n}\n.cg-board-wrap div.over {\n position: absolute;\n top: 0;\n left: 0;\n background-color: rgba(20, 85, 30, 0.3);\n}\n.cg-board-wrap piece.ghost {\n opacity: 0.3;\n}\n.cg-board-wrap svg {\n overflow: hidden;\n position: relative;\n top: 0px;\n left: 0px;\n width: 100%;\n height: 100%;\n pointer-events: none;\n z-index: 2;\n opacity: 0.6;\n}\n.cg-board-wrap svg image {\n opacity: 0.5;\n}\n.cg-board-wrap coords {\n position: absolute;\n display: -webkit-box;\n display: flex;\n pointer-events: none;\n opacity: 0.8;\n font-size: 9px;\n}\n.cg-board-wrap coords.ranks {\n right: -15px;\n top: 0;\n -webkit-box-orient: vertical;\n -webkit-box-direction: reverse;\n flex-flow: column-reverse;\n height: 100%;\n width: 12px;\n}\n.cg-board-wrap coords.ranks.black {\n -webkit-box-orient: vertical;\n -webkit-box-direction: normal;\n flex-flow: column;\n}\n.cg-board-wrap coords.files {\n bottom: -16px;\n left: 0;\n -webkit-box-orient: horizontal;\n -webkit-box-direction: normal;\n flex-flow: row;\n width: 100%;\n height: 16px;\n text-transform: uppercase;\n text-align: center;\n}\n.cg-board-wrap coords.files.black {\n -webkit-box-orient: horizontal;\n -webkit-box-direction: reverse;\n flex-flow: row-reverse;\n}\n.cg-board-wrap coords coord {\n -webkit-box-flex: 1;\n flex: 1 1 auto;\n}\n.cg-board-wrap coords.ranks coord {\n -webkit-transform: translateY(39%);\n transform: translateY(39%);\n}\n\n\n/* THEME CUSTOMIZATION*/\n/*\n * Board\n */\n.blue .cg-board-wrap {\n background-image: 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.cg-board piece.pawn.white {\n background-image: 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.cg-board piece.rook.white {\n background-image: 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.cg-board piece.knight.black {\n background-image: 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.cg-board piece.rook.black {\n background-image: 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.cg-board piece.queen.black {\n background-image: 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url('data:image/svg+xml;base64,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""]); + +// exports + + +/***/ }), + +/***/ "./node_modules/css-loader/lib/css-base.js": +/*!*************************************************!*\ + !*** ./node_modules/css-loader/lib/css-base.js ***! + \*************************************************/ +/*! no static exports found */ +/***/ (function(module, exports) { + +/* + MIT License http://www.opensource.org/licenses/mit-license.php + Author Tobias Koppers @sokra +*/ +// css base code, injected by the css-loader +module.exports = function(useSourceMap) { + var list = []; + + // return the list of modules as css string + list.toString = function toString() { + return this.map(function (item) { + var content = cssWithMappingToString(item, useSourceMap); + if(item[2]) { + return "@media " + item[2] + "{" + content + "}"; + } else { + return content; + } + }).join(""); + }; + + // import a list of modules into the list + list.i = function(modules, mediaQuery) { + if(typeof modules === "string") + modules = [[null, modules, ""]]; + var alreadyImportedModules = {}; + for(var i = 0; i < this.length; i++) { + var id = this[i][0]; + if(typeof id === "number") + alreadyImportedModules[id] = true; + } + for(i = 0; i < modules.length; i++) { + var item = modules[i]; + // skip already imported module + // this implementation is not 100% perfect for weird media query combinations + // when a module is imported multiple times with different media queries. + // I hope this will never occur (Hey this way we have smaller bundles) + if(typeof item[0] !== "number" || !alreadyImportedModules[item[0]]) { + if(mediaQuery && !item[2]) { + item[2] = mediaQuery; + } else if(mediaQuery) { + item[2] = "(" + item[2] + ") and (" + mediaQuery + ")"; + } + list.push(item); + } + } + }; + return list; +}; + +function cssWithMappingToString(item, useSourceMap) { + var content = item[1] || ''; + var cssMapping = item[3]; + if (!cssMapping) { + return content; + } + + if (useSourceMap && typeof btoa === 'function') { + var sourceMapping = toComment(cssMapping); + var sourceURLs = cssMapping.sources.map(function (source) { + return '/*# sourceURL=' + cssMapping.sourceRoot + source + ' */' + }); + + return [content].concat(sourceURLs).concat([sourceMapping]).join('\n'); + } + + return [content].join('\n'); +} + +// Adapted from convert-source-map (MIT) +function toComment(sourceMap) { + // eslint-disable-next-line no-undef + var base64 = btoa(unescape(encodeURIComponent(JSON.stringify(sourceMap)))); + var data = 'sourceMappingURL=data:application/json;charset=utf-8;base64,' + base64; + + return '/*# ' + data + ' */'; +} + + +/***/ }), + +/***/ "./node_modules/is-buffer/index.js": +/*!*****************************************!*\ + !*** ./node_modules/is-buffer/index.js ***! + \*****************************************/ +/*! no static exports found */ +/***/ (function(module, exports) { + +/*! + * Determine if an object is a Buffer + * + * @author Feross Aboukhadijeh <https://feross.org> + * @license MIT + */ + +module.exports = function isBuffer (obj) { + return obj != null && obj.constructor != null && + typeof obj.constructor.isBuffer === 'function' && obj.constructor.isBuffer(obj) +} + + +/***/ }), + +/***/ "./node_modules/jquery/dist/jquery.js": +/*!********************************************!*\ + !*** ./node_modules/jquery/dist/jquery.js ***! + \********************************************/ +/*! no static exports found */ +/***/ (function(module, exports, __webpack_require__) { + +var __WEBPACK_AMD_DEFINE_ARRAY__, __WEBPACK_AMD_DEFINE_RESULT__;/*! + * jQuery JavaScript Library v3.4.1 + * https://jquery.com/ + * + * Includes Sizzle.js + * https://sizzlejs.com/ + * + * Copyright JS Foundation and other contributors + * Released under the MIT license + * https://jquery.org/license + * + * Date: 2019-05-01T21:04Z + */ +( function( global, factory ) { + + "use strict"; + + if ( true && typeof module.exports === "object" ) { + + // For CommonJS and CommonJS-like environments where a proper `window` + // is present, execute the factory and get jQuery. + // For environments that do not have a `window` with a `document` + // (such as Node.js), expose a factory as module.exports. + // This accentuates the need for the creation of a real `window`. + // e.g. var jQuery = require("jquery")(window); + // See ticket #14549 for more info. + module.exports = global.document ? + factory( global, true ) : + function( w ) { + if ( !w.document ) { + throw new Error( "jQuery requires a window with a document" ); + } + return factory( w ); + }; + } else { + factory( global ); + } + +// Pass this if window is not defined yet +} )( typeof window !== "undefined" ? window : this, function( window, noGlobal ) { + +// Edge <= 12 - 13+, Firefox <=18 - 45+, IE 10 - 11, Safari 5.1 - 9+, iOS 6 - 9.1 +// throw exceptions when non-strict code (e.g., ASP.NET 4.5) accesses strict mode +// arguments.callee.caller (trac-13335). But as of jQuery 3.0 (2016), strict mode should be common +// enough that all such attempts are guarded in a try block. +"use strict"; + +var arr = []; + +var document = window.document; + +var getProto = Object.getPrototypeOf; + +var slice = arr.slice; + +var concat = arr.concat; + +var push = arr.push; + +var indexOf = arr.indexOf; + +var class2type = {}; + +var toString = class2type.toString; + +var hasOwn = class2type.hasOwnProperty; + +var fnToString = hasOwn.toString; + +var ObjectFunctionString = fnToString.call( Object ); + +var support = {}; + +var isFunction = function isFunction( obj ) { + + // Support: Chrome <=57, Firefox <=52 + // In some browsers, typeof returns "function" for HTML <object> elements + // (i.e., `typeof document.createElement( "object" ) === "function"`). + // We don't want to classify *any* DOM node as a function. + return typeof obj === "function" && typeof obj.nodeType !== "number"; + }; + + +var isWindow = function isWindow( obj ) { + return obj != null && obj === obj.window; + }; + + + + + var preservedScriptAttributes = { + type: true, + src: true, + nonce: true, + noModule: true + }; + + function DOMEval( code, node, doc ) { + doc = doc || document; + + var i, val, + script = doc.createElement( "script" ); + + script.text = code; + if ( node ) { + for ( i in preservedScriptAttributes ) { + + // Support: Firefox 64+, Edge 18+ + // Some browsers don't support the "nonce" property on scripts. + // On the other hand, just using `getAttribute` is not enough as + // the `nonce` attribute is reset to an empty string whenever it + // becomes browsing-context connected. + // See https://github.com/whatwg/html/issues/2369 + // See https://html.spec.whatwg.org/#nonce-attributes + // The `node.getAttribute` check was added for the sake of + // `jQuery.globalEval` so that it can fake a nonce-containing node + // via an object. + val = node[ i ] || node.getAttribute && node.getAttribute( i ); + if ( val ) { + script.setAttribute( i, val ); + } + } + } + doc.head.appendChild( script ).parentNode.removeChild( script ); + } + + +function toType( obj ) { + if ( obj == null ) { + return obj + ""; + } + + // Support: Android <=2.3 only (functionish RegExp) + return typeof obj === "object" || typeof obj === "function" ? + class2type[ toString.call( obj ) ] || "object" : + typeof obj; +} +/* global Symbol */ +// Defining this global in .eslintrc.json would create a danger of using the global +// unguarded in another place, it seems safer to define global only for this module + + + +var + version = "3.4.1", + + // Define a local copy of jQuery + jQuery = function( selector, context ) { + + // The jQuery object is actually just the init constructor 'enhanced' + // Need init if jQuery is called (just allow error to be thrown if not included) + return new jQuery.fn.init( selector, context ); + }, + + // Support: Android <=4.0 only + // Make sure we trim BOM and NBSP + rtrim = /^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g; + +jQuery.fn = jQuery.prototype = { + + // The current version of jQuery being used + jquery: version, + + constructor: jQuery, + + // The default length of a jQuery object is 0 + length: 0, + + toArray: function() { + return slice.call( this ); + }, + + // Get the Nth element in the matched element set OR + // Get the whole matched element set as a clean array + get: function( num ) { + + // Return all the elements in a clean array + if ( num == null ) { + return slice.call( this ); + } + + // Return just the one element from the set + return num < 0 ? this[ num + this.length ] : this[ num ]; + }, + + // Take an array of elements and push it onto the stack + // (returning the new matched element set) + pushStack: function( elems ) { + + // Build a new jQuery matched element set + var ret = jQuery.merge( this.constructor(), elems ); + + // Add the old object onto the stack (as a reference) + ret.prevObject = this; + + // Return the newly-formed element set + return ret; + }, + + // Execute a callback for every element in the matched set. + each: function( callback ) { + return jQuery.each( this, callback ); + }, + + map: function( callback ) { + return this.pushStack( jQuery.map( this, function( elem, i ) { + return callback.call( elem, i, elem ); + } ) ); + }, + + slice: function() { + return this.pushStack( slice.apply( this, arguments ) ); + }, + + first: function() { + return this.eq( 0 ); + }, + + last: function() { + return this.eq( -1 ); + }, + + eq: function( i ) { + var len = this.length, + j = +i + ( i < 0 ? len : 0 ); + return this.pushStack( j >= 0 && j < len ? [ this[ j ] ] : [] ); + }, + + end: function() { + return this.prevObject || this.constructor(); + }, + + // For internal use only. + // Behaves like an Array's method, not like a jQuery method. + push: push, + sort: arr.sort, + splice: arr.splice +}; + +jQuery.extend = jQuery.fn.extend = function() { + var options, name, src, copy, copyIsArray, clone, + target = arguments[ 0 ] || {}, + i = 1, + length = arguments.length, + deep = false; + + // Handle a deep copy situation + if ( typeof target === "boolean" ) { + deep = target; + + // Skip the boolean and the target + target = arguments[ i ] || {}; + i++; + } + + // Handle case when target is a string or something (possible in deep copy) + if ( typeof target !== "object" && !isFunction( target ) ) { + target = {}; + } + + // Extend jQuery itself if only one argument is passed + if ( i === length ) { + target = this; + i--; + } + + for ( ; i < length; i++ ) { + + // Only deal with non-null/undefined values + if ( ( options = arguments[ i ] ) != null ) { + + // Extend the base object + for ( name in options ) { + copy = options[ name ]; + + // Prevent Object.prototype pollution + // Prevent never-ending loop + if ( name === "__proto__" || target === copy ) { + continue; + } + + // Recurse if we're merging plain objects or arrays + if ( deep && copy && ( jQuery.isPlainObject( copy ) || + ( copyIsArray = Array.isArray( copy ) ) ) ) { + src = target[ name ]; + + // Ensure proper type for the source value + if ( copyIsArray && !Array.isArray( src ) ) { + clone = []; + } else if ( !copyIsArray && !jQuery.isPlainObject( src ) ) { + clone = {}; + } else { + clone = src; + } + copyIsArray = false; + + // Never move original objects, clone them + target[ name ] = jQuery.extend( deep, clone, copy ); + + // Don't bring in undefined values + } else if ( copy !== undefined ) { + target[ name ] = copy; + } + } + } + } + + // Return the modified object + return target; +}; + +jQuery.extend( { + + // Unique for each copy of jQuery on the page + expando: "jQuery" + ( version + Math.random() ).replace( /\D/g, "" ), + + // Assume jQuery is ready without the ready module + isReady: true, + + error: function( msg ) { + throw new Error( msg ); + }, + + noop: function() {}, + + isPlainObject: function( obj ) { + var proto, Ctor; + + // Detect obvious negatives + // Use toString instead of jQuery.type to catch host objects + if ( !obj || toString.call( obj ) !== "[object Object]" ) { + return false; + } + + proto = getProto( obj ); + + // Objects with no prototype (e.g., `Object.create( null )`) are plain + if ( !proto ) { + return true; + } + + // Objects with prototype are plain iff they were constructed by a global Object function + Ctor = hasOwn.call( proto, "constructor" ) && proto.constructor; + return typeof Ctor === "function" && fnToString.call( Ctor ) === ObjectFunctionString; + }, + + isEmptyObject: function( obj ) { + var name; + + for ( name in obj ) { + return false; + } + return true; + }, + + // Evaluates a script in a global context + globalEval: function( code, options ) { + DOMEval( code, { nonce: options && options.nonce } ); + }, + + each: function( obj, callback ) { + var length, i = 0; + + if ( isArrayLike( obj ) ) { + length = obj.length; + for ( ; i < length; i++ ) { + if ( callback.call( obj[ i ], i, obj[ i ] ) === false ) { + break; + } + } + } else { + for ( i in obj ) { + if ( callback.call( obj[ i ], i, obj[ i ] ) === false ) { + break; + } + } + } + + return obj; + }, + + // Support: Android <=4.0 only + trim: function( text ) { + return text == null ? + "" : + ( text + "" ).replace( rtrim, "" ); + }, + + // results is for internal usage only + makeArray: function( arr, results ) { + var ret = results || []; + + if ( arr != null ) { + if ( isArrayLike( Object( arr ) ) ) { + jQuery.merge( ret, + typeof arr === "string" ? + [ arr ] : arr + ); + } else { + push.call( ret, arr ); + } + } + + return ret; + }, + + inArray: function( elem, arr, i ) { + return arr == null ? -1 : indexOf.call( arr, elem, i ); + }, + + // Support: Android <=4.0 only, PhantomJS 1 only + // push.apply(_, arraylike) throws on ancient WebKit + merge: function( first, second ) { + var len = +second.length, + j = 0, + i = first.length; + + for ( ; j < len; j++ ) { + first[ i++ ] = second[ j ]; + } + + first.length = i; + + return first; + }, + + grep: function( elems, callback, invert ) { + var callbackInverse, + matches = [], + i = 0, + length = elems.length, + callbackExpect = !invert; + + // Go through the array, only saving the items + // that pass the validator function + for ( ; i < length; i++ ) { + callbackInverse = !callback( elems[ i ], i ); + if ( callbackInverse !== callbackExpect ) { + matches.push( elems[ i ] ); + } + } + + return matches; + }, + + // arg is for internal usage only + map: function( elems, callback, arg ) { + var length, value, + i = 0, + ret = []; + + // Go through the array, translating each of the items to their new values + if ( isArrayLike( elems ) ) { + length = elems.length; + for ( ; i < length; i++ ) { + value = callback( elems[ i ], i, arg ); + + if ( value != null ) { + ret.push( value ); + } + } + + // Go through every key on the object, + } else { + for ( i in elems ) { + value = callback( elems[ i ], i, arg ); + + if ( value != null ) { + ret.push( value ); + } + } + } + + // Flatten any nested arrays + return concat.apply( [], ret ); + }, + + // A global GUID counter for objects + guid: 1, + + // jQuery.support is not used in Core but other projects attach their + // properties to it so it needs to exist. + support: support +} ); + +if ( typeof Symbol === "function" ) { + jQuery.fn[ Symbol.iterator ] = arr[ Symbol.iterator ]; +} + +// Populate the class2type map +jQuery.each( "Boolean Number String Function Array Date RegExp Object Error Symbol".split( " " ), +function( i, name ) { + class2type[ "[object " + name + "]" ] = name.toLowerCase(); +} ); + +function isArrayLike( obj ) { + + // Support: real iOS 8.2 only (not reproducible in simulator) + // `in` check used to prevent JIT error (gh-2145) + // hasOwn isn't used here due to false negatives + // regarding Nodelist length in IE + var length = !!obj && "length" in obj && obj.length, + type = toType( obj ); + + if ( isFunction( obj ) || isWindow( obj ) ) { + return false; + } + + return type === "array" || length === 0 || + typeof length === "number" && length > 0 && ( length - 1 ) in obj; +} +var Sizzle = +/*! + * Sizzle CSS Selector Engine v2.3.4 + * https://sizzlejs.com/ + * + * Copyright JS Foundation and other contributors + * Released under the MIT license + * https://js.foundation/ + * + * Date: 2019-04-08 + */ +(function( window ) { + +var i, + support, + Expr, + getText, + isXML, + tokenize, + compile, + select, + outermostContext, + sortInput, + hasDuplicate, + + // Local document vars + setDocument, + document, + docElem, + documentIsHTML, + rbuggyQSA, + rbuggyMatches, + matches, + contains, + + // Instance-specific data + expando = "sizzle" + 1 * new Date(), + preferredDoc = window.document, + dirruns = 0, + done = 0, + classCache = createCache(), + tokenCache = createCache(), + compilerCache = createCache(), + nonnativeSelectorCache = createCache(), + sortOrder = function( a, b ) { + if ( a === b ) { + hasDuplicate = true; + } + return 0; + }, + + // Instance methods + hasOwn = ({}).hasOwnProperty, + arr = [], + pop = arr.pop, + push_native = arr.push, + push = arr.push, + slice = arr.slice, + // Use a stripped-down indexOf as it's faster than native + // https://jsperf.com/thor-indexof-vs-for/5 + indexOf = function( list, elem ) { + var i = 0, + len = list.length; + for ( ; i < len; i++ ) { + if ( list[i] === elem ) { + return i; + } + } + return -1; + }, + + booleans = "checked|selected|async|autofocus|autoplay|controls|defer|disabled|hidden|ismap|loop|multiple|open|readonly|required|scoped", + + // Regular expressions + + // http://www.w3.org/TR/css3-selectors/#whitespace + whitespace = "[\\x20\\t\\r\\n\\f]", + + // http://www.w3.org/TR/CSS21/syndata.html#value-def-identifier + identifier = "(?:\\\\.|[\\w-]|[^\0-\\xa0])+", + + // Attribute selectors: http://www.w3.org/TR/selectors/#attribute-selectors + attributes = "\\[" + whitespace + "*(" + identifier + ")(?:" + whitespace + + // Operator (capture 2) + "*([*^$|!~]?=)" + whitespace + + // "Attribute values must be CSS identifiers [capture 5] or strings [capture 3 or capture 4]" + "*(?:'((?:\\\\.|[^\\\\'])*)'|\"((?:\\\\.|[^\\\\\"])*)\"|(" + identifier + "))|)" + whitespace + + "*\\]", + + pseudos = ":(" + identifier + ")(?:\\((" + + // To reduce the number of selectors needing tokenize in the preFilter, prefer arguments: + // 1. quoted (capture 3; capture 4 or capture 5) + "('((?:\\\\.|[^\\\\'])*)'|\"((?:\\\\.|[^\\\\\"])*)\")|" + + // 2. simple (capture 6) + "((?:\\\\.|[^\\\\()[\\]]|" + attributes + ")*)|" + + // 3. anything else (capture 2) + ".*" + + ")\\)|)", + + // Leading and non-escaped trailing whitespace, capturing some non-whitespace characters preceding the latter + rwhitespace = new RegExp( whitespace + "+", "g" ), + rtrim = new RegExp( "^" + whitespace + "+|((?:^|[^\\\\])(?:\\\\.)*)" + whitespace + "+$", "g" ), + + rcomma = new RegExp( "^" + whitespace + "*," + whitespace + "*" ), + rcombinators = new RegExp( "^" + whitespace + "*([>+~]|" + whitespace + ")" + whitespace + "*" ), + rdescend = new RegExp( whitespace + "|>" ), + + rpseudo = new RegExp( pseudos ), + ridentifier = new RegExp( "^" + identifier + "$" ), + + matchExpr = { + "ID": new RegExp( "^#(" + identifier + ")" ), + "CLASS": new RegExp( "^\\.(" + identifier + ")" ), + "TAG": new RegExp( "^(" + identifier + "|[*])" ), + "ATTR": new RegExp( "^" + attributes ), + "PSEUDO": new RegExp( "^" + pseudos ), + "CHILD": new RegExp( "^:(only|first|last|nth|nth-last)-(child|of-type)(?:\\(" + whitespace + + "*(even|odd|(([+-]|)(\\d*)n|)" + whitespace + "*(?:([+-]|)" + whitespace + + "*(\\d+)|))" + whitespace + "*\\)|)", "i" ), + "bool": new RegExp( "^(?:" + booleans + ")$", "i" ), + // For use in libraries implementing .is() + // We use this for POS matching in `select` + "needsContext": new RegExp( "^" + whitespace + "*[>+~]|:(even|odd|eq|gt|lt|nth|first|last)(?:\\(" + + whitespace + "*((?:-\\d)?\\d*)" + whitespace + "*\\)|)(?=[^-]|$)", "i" ) + }, + + rhtml = /HTML$/i, + rinputs = /^(?:input|select|textarea|button)$/i, + rheader = /^h\d$/i, + + rnative = /^[^{]+\{\s*\[native \w/, + + // Easily-parseable/retrievable ID or TAG or CLASS selectors + rquickExpr = /^(?:#([\w-]+)|(\w+)|\.([\w-]+))$/, + + rsibling = /[+~]/, + + // CSS escapes + // http://www.w3.org/TR/CSS21/syndata.html#escaped-characters + runescape = new RegExp( "\\\\([\\da-f]{1,6}" + whitespace + "?|(" + whitespace + ")|.)", "ig" ), + funescape = function( _, escaped, escapedWhitespace ) { + var high = "0x" + escaped - 0x10000; + // NaN means non-codepoint + // Support: Firefox<24 + // Workaround erroneous numeric interpretation of +"0x" + return high !== high || escapedWhitespace ? + escaped : + high < 0 ? + // BMP codepoint + String.fromCharCode( high + 0x10000 ) : + // Supplemental Plane codepoint (surrogate pair) + String.fromCharCode( high >> 10 | 0xD800, high & 0x3FF | 0xDC00 ); + }, + + // CSS string/identifier serialization + // https://drafts.csswg.org/cssom/#common-serializing-idioms + rcssescape = /([\0-\x1f\x7f]|^-?\d)|^-$|[^\0-\x1f\x7f-\uFFFF\w-]/g, + fcssescape = function( ch, asCodePoint ) { + if ( asCodePoint ) { + + // U+0000 NULL becomes U+FFFD REPLACEMENT CHARACTER + if ( ch === "\0" ) { + return "\uFFFD"; + } + + // Control characters and (dependent upon position) numbers get escaped as code points + return ch.slice( 0, -1 ) + "\\" + ch.charCodeAt( ch.length - 1 ).toString( 16 ) + " "; + } + + // Other potentially-special ASCII characters get backslash-escaped + return "\\" + ch; + }, + + // Used for iframes + // See setDocument() + // Removing the function wrapper causes a "Permission Denied" + // error in IE + unloadHandler = function() { + setDocument(); + }, + + inDisabledFieldset = addCombinator( + function( elem ) { + return elem.disabled === true && elem.nodeName.toLowerCase() === "fieldset"; + }, + { dir: "parentNode", next: "legend" } + ); + +// Optimize for push.apply( _, NodeList ) +try { + push.apply( + (arr = slice.call( preferredDoc.childNodes )), + preferredDoc.childNodes + ); + // Support: Android<4.0 + // Detect silently failing push.apply + arr[ preferredDoc.childNodes.length ].nodeType; +} catch ( e ) { + push = { apply: arr.length ? + + // Leverage slice if possible + function( target, els ) { + push_native.apply( target, slice.call(els) ); + } : + + // Support: IE<9 + // Otherwise append directly + function( target, els ) { + var j = target.length, + i = 0; + // Can't trust NodeList.length + while ( (target[j++] = els[i++]) ) {} + target.length = j - 1; + } + }; +} + +function Sizzle( selector, context, results, seed ) { + var m, i, elem, nid, match, groups, newSelector, + newContext = context && context.ownerDocument, + + // nodeType defaults to 9, since context defaults to document + nodeType = context ? context.nodeType : 9; + + results = results || []; + + // Return early from calls with invalid selector or context + if ( typeof selector !== "string" || !selector || + nodeType !== 1 && nodeType !== 9 && nodeType !== 11 ) { + + return results; + } + + // Try to shortcut find operations (as opposed to filters) in HTML documents + if ( !seed ) { + + if ( ( context ? context.ownerDocument || context : preferredDoc ) !== document ) { + setDocument( context ); + } + context = context || document; + + if ( documentIsHTML ) { + + // If the selector is sufficiently simple, try using a "get*By*" DOM method + // (excepting DocumentFragment context, where the methods don't exist) + if ( nodeType !== 11 && (match = rquickExpr.exec( selector )) ) { + + // ID selector + if ( (m = match[1]) ) { + + // Document context + if ( nodeType === 9 ) { + if ( (elem = context.getElementById( m )) ) { + + // Support: IE, Opera, Webkit + // TODO: identify versions + // getElementById can match elements by name instead of ID + if ( elem.id === m ) { + results.push( elem ); + return results; + } + } else { + return results; + } + + // Element context + } else { + + // Support: IE, Opera, Webkit + // TODO: identify versions + // getElementById can match elements by name instead of ID + if ( newContext && (elem = newContext.getElementById( m )) && + contains( context, elem ) && + elem.id === m ) { + + results.push( elem ); + return results; + } + } + + // Type selector + } else if ( match[2] ) { + push.apply( results, context.getElementsByTagName( selector ) ); + return results; + + // Class selector + } else if ( (m = match[3]) && support.getElementsByClassName && + context.getElementsByClassName ) { + + push.apply( results, context.getElementsByClassName( m ) ); + return results; + } + } + + // Take advantage of querySelectorAll + if ( support.qsa && + !nonnativeSelectorCache[ selector + " " ] && + (!rbuggyQSA || !rbuggyQSA.test( selector )) && + + // Support: IE 8 only + // Exclude object elements + (nodeType !== 1 || context.nodeName.toLowerCase() !== "object") ) { + + newSelector = selector; + newContext = context; + + // qSA considers elements outside a scoping root when evaluating child or + // descendant combinators, which is not what we want. + // In such cases, we work around the behavior by prefixing every selector in the + // list with an ID selector referencing the scope context. + // Thanks to Andrew Dupont for this technique. + if ( nodeType === 1 && rdescend.test( selector ) ) { + + // Capture the context ID, setting it first if necessary + if ( (nid = context.getAttribute( "id" )) ) { + nid = nid.replace( rcssescape, fcssescape ); + } else { + context.setAttribute( "id", (nid = expando) ); + } + + // Prefix every selector in the list + groups = tokenize( selector ); + i = groups.length; + while ( i-- ) { + groups[i] = "#" + nid + " " + toSelector( groups[i] ); + } + newSelector = groups.join( "," ); + + // Expand context for sibling selectors + newContext = rsibling.test( selector ) && testContext( context.parentNode ) || + context; + } + + try { + push.apply( results, + newContext.querySelectorAll( newSelector ) + ); + return results; + } catch ( qsaError ) { + nonnativeSelectorCache( selector, true ); + } finally { + if ( nid === expando ) { + context.removeAttribute( "id" ); + } + } + } + } + } + + // All others + return select( selector.replace( rtrim, "$1" ), context, results, seed ); +} + +/** + * Create key-value caches of limited size + * @returns {function(string, object)} Returns the Object data after storing it on itself with + * property name the (space-suffixed) string and (if the cache is larger than Expr.cacheLength) + * deleting the oldest entry + */ +function createCache() { + var keys = []; + + function cache( key, value ) { + // Use (key + " ") to avoid collision with native prototype properties (see Issue #157) + if ( keys.push( key + " " ) > Expr.cacheLength ) { + // Only keep the most recent entries + delete cache[ keys.shift() ]; + } + return (cache[ key + " " ] = value); + } + return cache; +} + +/** + * Mark a function for special use by Sizzle + * @param {Function} fn The function to mark + */ +function markFunction( fn ) { + fn[ expando ] = true; + return fn; +} + +/** + * Support testing using an element + * @param {Function} fn Passed the created element and returns a boolean result + */ +function assert( fn ) { + var el = document.createElement("fieldset"); + + try { + return !!fn( el ); + } catch (e) { + return false; + } finally { + // Remove from its parent by default + if ( el.parentNode ) { + el.parentNode.removeChild( el ); + } + // release memory in IE + el = null; + } +} + +/** + * Adds the same handler for all of the specified attrs + * @param {String} attrs Pipe-separated list of attributes + * @param {Function} handler The method that will be applied + */ +function addHandle( attrs, handler ) { + var arr = attrs.split("|"), + i = arr.length; + + while ( i-- ) { + Expr.attrHandle[ arr[i] ] = handler; + } +} + +/** + * Checks document order of two siblings + * @param {Element} a + * @param {Element} b + * @returns {Number} Returns less than 0 if a precedes b, greater than 0 if a follows b + */ +function siblingCheck( a, b ) { + var cur = b && a, + diff = cur && a.nodeType === 1 && b.nodeType === 1 && + a.sourceIndex - b.sourceIndex; + + // Use IE sourceIndex if available on both nodes + if ( diff ) { + return diff; + } + + // Check if b follows a + if ( cur ) { + while ( (cur = cur.nextSibling) ) { + if ( cur === b ) { + return -1; + } + } + } + + return a ? 1 : -1; +} + +/** + * Returns a function to use in pseudos for input types + * @param {String} type + */ +function createInputPseudo( type ) { + return function( elem ) { + var name = elem.nodeName.toLowerCase(); + return name === "input" && elem.type === type; + }; +} + +/** + * Returns a function to use in pseudos for buttons + * @param {String} type + */ +function createButtonPseudo( type ) { + return function( elem ) { + var name = elem.nodeName.toLowerCase(); + return (name === "input" || name === "button") && elem.type === type; + }; +} + +/** + * Returns a function to use in pseudos for :enabled/:disabled + * @param {Boolean} disabled true for :disabled; false for :enabled + */ +function createDisabledPseudo( disabled ) { + + // Known :disabled false positives: fieldset[disabled] > legend:nth-of-type(n+2) :can-disable + return function( elem ) { + + // Only certain elements can match :enabled or :disabled + // https://html.spec.whatwg.org/multipage/scripting.html#selector-enabled + // https://html.spec.whatwg.org/multipage/scripting.html#selector-disabled + if ( "form" in elem ) { + + // Check for inherited disabledness on relevant non-disabled elements: + // * listed form-associated elements in a disabled fieldset + // https://html.spec.whatwg.org/multipage/forms.html#category-listed + // https://html.spec.whatwg.org/multipage/forms.html#concept-fe-disabled + // * option elements in a disabled optgroup + // https://html.spec.whatwg.org/multipage/forms.html#concept-option-disabled + // All such elements have a "form" property. + if ( elem.parentNode && elem.disabled === false ) { + + // Option elements defer to a parent optgroup if present + if ( "label" in elem ) { + if ( "label" in elem.parentNode ) { + return elem.parentNode.disabled === disabled; + } else { + return elem.disabled === disabled; + } + } + + // Support: IE 6 - 11 + // Use the isDisabled shortcut property to check for disabled fieldset ancestors + return elem.isDisabled === disabled || + + // Where there is no isDisabled, check manually + /* jshint -W018 */ + elem.isDisabled !== !disabled && + inDisabledFieldset( elem ) === disabled; + } + + return elem.disabled === disabled; + + // Try to winnow out elements that can't be disabled before trusting the disabled property. + // Some victims get caught in our net (label, legend, menu, track), but it shouldn't + // even exist on them, let alone have a boolean value. + } else if ( "label" in elem ) { + return elem.disabled === disabled; + } + + // Remaining elements are neither :enabled nor :disabled + return false; + }; +} + +/** + * Returns a function to use in pseudos for positionals + * @param {Function} fn + */ +function createPositionalPseudo( fn ) { + return markFunction(function( argument ) { + argument = +argument; + return markFunction(function( seed, matches ) { + var j, + matchIndexes = fn( [], seed.length, argument ), + i = matchIndexes.length; + + // Match elements found at the specified indexes + while ( i-- ) { + if ( seed[ (j = matchIndexes[i]) ] ) { + seed[j] = !(matches[j] = seed[j]); + } + } + }); + }); +} + +/** + * Checks a node for validity as a Sizzle context + * @param {Element|Object=} context + * @returns {Element|Object|Boolean} The input node if acceptable, otherwise a falsy value + */ +function testContext( context ) { + return context && typeof context.getElementsByTagName !== "undefined" && context; +} + +// Expose support vars for convenience +support = Sizzle.support = {}; + +/** + * Detects XML nodes + * @param {Element|Object} elem An element or a document + * @returns {Boolean} True iff elem is a non-HTML XML node + */ +isXML = Sizzle.isXML = function( elem ) { + var namespace = elem.namespaceURI, + docElem = (elem.ownerDocument || elem).documentElement; + + // Support: IE <=8 + // Assume HTML when documentElement doesn't yet exist, such as inside loading iframes + // https://bugs.jquery.com/ticket/4833 + return !rhtml.test( namespace || docElem && docElem.nodeName || "HTML" ); +}; + +/** + * Sets document-related variables once based on the current document + * @param {Element|Object} [doc] An element or document object to use to set the document + * @returns {Object} Returns the current document + */ +setDocument = Sizzle.setDocument = function( node ) { + var hasCompare, subWindow, + doc = node ? node.ownerDocument || node : preferredDoc; + + // Return early if doc is invalid or already selected + if ( doc === document || doc.nodeType !== 9 || !doc.documentElement ) { + return document; + } + + // Update global variables + document = doc; + docElem = document.documentElement; + documentIsHTML = !isXML( document ); + + // Support: IE 9-11, Edge + // Accessing iframe documents after unload throws "permission denied" errors (jQuery #13936) + if ( preferredDoc !== document && + (subWindow = document.defaultView) && subWindow.top !== subWindow ) { + + // Support: IE 11, Edge + if ( subWindow.addEventListener ) { + subWindow.addEventListener( "unload", unloadHandler, false ); + + // Support: IE 9 - 10 only + } else if ( subWindow.attachEvent ) { + subWindow.attachEvent( "onunload", unloadHandler ); + } + } + + /* Attributes + ---------------------------------------------------------------------- */ + + // Support: IE<8 + // Verify that getAttribute really returns attributes and not properties + // (excepting IE8 booleans) + support.attributes = assert(function( el ) { + el.className = "i"; + return !el.getAttribute("className"); + }); + + /* getElement(s)By* + ---------------------------------------------------------------------- */ + + // Check if getElementsByTagName("*") returns only elements + support.getElementsByTagName = assert(function( el ) { + el.appendChild( document.createComment("") ); + return !el.getElementsByTagName("*").length; + }); + + // Support: IE<9 + support.getElementsByClassName = rnative.test( document.getElementsByClassName ); + + // Support: IE<10 + // Check if getElementById returns elements by name + // The broken getElementById methods don't pick up programmatically-set names, + // so use a roundabout getElementsByName test + support.getById = assert(function( el ) { + docElem.appendChild( el ).id = expando; + return !document.getElementsByName || !document.getElementsByName( expando ).length; + }); + + // ID filter and find + if ( support.getById ) { + Expr.filter["ID"] = function( id ) { + var attrId = id.replace( runescape, funescape ); + return function( elem ) { + return elem.getAttribute("id") === attrId; + }; + }; + Expr.find["ID"] = function( id, context ) { + if ( typeof context.getElementById !== "undefined" && documentIsHTML ) { + var elem = context.getElementById( id ); + return elem ? [ elem ] : []; + } + }; + } else { + Expr.filter["ID"] = function( id ) { + var attrId = id.replace( runescape, funescape ); + return function( elem ) { + var node = typeof elem.getAttributeNode !== "undefined" && + elem.getAttributeNode("id"); + return node && node.value === attrId; + }; + }; + + // Support: IE 6 - 7 only + // getElementById is not reliable as a find shortcut + Expr.find["ID"] = function( id, context ) { + if ( typeof context.getElementById !== "undefined" && documentIsHTML ) { + var node, i, elems, + elem = context.getElementById( id ); + + if ( elem ) { + + // Verify the id attribute + node = elem.getAttributeNode("id"); + if ( node && node.value === id ) { + return [ elem ]; + } + + // Fall back on getElementsByName + elems = context.getElementsByName( id ); + i = 0; + while ( (elem = elems[i++]) ) { + node = elem.getAttributeNode("id"); + if ( node && node.value === id ) { + return [ elem ]; + } + } + } + + return []; + } + }; + } + + // Tag + Expr.find["TAG"] = support.getElementsByTagName ? + function( tag, context ) { + if ( typeof context.getElementsByTagName !== "undefined" ) { + return context.getElementsByTagName( tag ); + + // DocumentFragment nodes don't have gEBTN + } else if ( support.qsa ) { + return context.querySelectorAll( tag ); + } + } : + + function( tag, context ) { + var elem, + tmp = [], + i = 0, + // By happy coincidence, a (broken) gEBTN appears on DocumentFragment nodes too + results = context.getElementsByTagName( tag ); + + // Filter out possible comments + if ( tag === "*" ) { + while ( (elem = results[i++]) ) { + if ( elem.nodeType === 1 ) { + tmp.push( elem ); + } + } + + return tmp; + } + return results; + }; + + // Class + Expr.find["CLASS"] = support.getElementsByClassName && function( className, context ) { + if ( typeof context.getElementsByClassName !== "undefined" && documentIsHTML ) { + return context.getElementsByClassName( className ); + } + }; + + /* QSA/matchesSelector + ---------------------------------------------------------------------- */ + + // QSA and matchesSelector support + + // matchesSelector(:active) reports false when true (IE9/Opera 11.5) + rbuggyMatches = []; + + // qSa(:focus) reports false when true (Chrome 21) + // We allow this because of a bug in IE8/9 that throws an error + // whenever `document.activeElement` is accessed on an iframe + // So, we allow :focus to pass through QSA all the time to avoid the IE error + // See https://bugs.jquery.com/ticket/13378 + rbuggyQSA = []; + + if ( (support.qsa = rnative.test( document.querySelectorAll )) ) { + // Build QSA regex + // Regex strategy adopted from Diego Perini + assert(function( el ) { + // Select is set to empty string on purpose + // This is to test IE's treatment of not explicitly + // setting a boolean content attribute, + // since its presence should be enough + // https://bugs.jquery.com/ticket/12359 + docElem.appendChild( el ).innerHTML = "<a id='" + expando + "'></a>" + + "<select id='" + expando + "-\r\\' msallowcapture=''>" + + "<option selected=''></option></select>"; + + // Support: IE8, Opera 11-12.16 + // Nothing should be selected when empty strings follow ^= or $= or *= + // The test attribute must be unknown in Opera but "safe" for WinRT + // https://msdn.microsoft.com/en-us/library/ie/hh465388.aspx#attribute_section + if ( el.querySelectorAll("[msallowcapture^='']").length ) { + rbuggyQSA.push( "[*^$]=" + whitespace + "*(?:''|\"\")" ); + } + + // Support: IE8 + // Boolean attributes and "value" are not treated correctly + if ( !el.querySelectorAll("[selected]").length ) { + rbuggyQSA.push( "\\[" + whitespace + "*(?:value|" + booleans + ")" ); + } + + // Support: Chrome<29, Android<4.4, Safari<7.0+, iOS<7.0+, PhantomJS<1.9.8+ + if ( !el.querySelectorAll( "[id~=" + expando + "-]" ).length ) { + rbuggyQSA.push("~="); + } + + // Webkit/Opera - :checked should return selected option elements + // http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked + // IE8 throws error here and will not see later tests + if ( !el.querySelectorAll(":checked").length ) { + rbuggyQSA.push(":checked"); + } + + // Support: Safari 8+, iOS 8+ + // https://bugs.webkit.org/show_bug.cgi?id=136851 + // In-page `selector#id sibling-combinator selector` fails + if ( !el.querySelectorAll( "a#" + expando + "+*" ).length ) { + rbuggyQSA.push(".#.+[+~]"); + } + }); + + assert(function( el ) { + el.innerHTML = "<a href='' disabled='disabled'></a>" + + "<select disabled='disabled'><option/></select>"; + + // Support: Windows 8 Native Apps + // The type and name attributes are restricted during .innerHTML assignment + var input = document.createElement("input"); + input.setAttribute( "type", "hidden" ); + el.appendChild( input ).setAttribute( "name", "D" ); + + // Support: IE8 + // Enforce case-sensitivity of name attribute + if ( el.querySelectorAll("[name=d]").length ) { + rbuggyQSA.push( "name" + whitespace + "*[*^$|!~]?=" ); + } + + // FF 3.5 - :enabled/:disabled and hidden elements (hidden elements are still enabled) + // IE8 throws error here and will not see later tests + if ( el.querySelectorAll(":enabled").length !== 2 ) { + rbuggyQSA.push( ":enabled", ":disabled" ); + } + + // Support: IE9-11+ + // IE's :disabled selector does not pick up the children of disabled fieldsets + docElem.appendChild( el ).disabled = true; + if ( el.querySelectorAll(":disabled").length !== 2 ) { + rbuggyQSA.push( ":enabled", ":disabled" ); + } + + // Opera 10-11 does not throw on post-comma invalid pseudos + el.querySelectorAll("*,:x"); + rbuggyQSA.push(",.*:"); + }); + } + + if ( (support.matchesSelector = rnative.test( (matches = docElem.matches || + docElem.webkitMatchesSelector || + docElem.mozMatchesSelector || + docElem.oMatchesSelector || + docElem.msMatchesSelector) )) ) { + + assert(function( el ) { + // Check to see if it's possible to do matchesSelector + // on a disconnected node (IE 9) + support.disconnectedMatch = matches.call( el, "*" ); + + // This should fail with an exception + // Gecko does not error, returns false instead + matches.call( el, "[s!='']:x" ); + rbuggyMatches.push( "!=", pseudos ); + }); + } + + rbuggyQSA = rbuggyQSA.length && new RegExp( rbuggyQSA.join("|") ); + rbuggyMatches = rbuggyMatches.length && new RegExp( rbuggyMatches.join("|") ); + + /* Contains + ---------------------------------------------------------------------- */ + hasCompare = rnative.test( docElem.compareDocumentPosition ); + + // Element contains another + // Purposefully self-exclusive + // As in, an element does not contain itself + contains = hasCompare || rnative.test( docElem.contains ) ? + function( a, b ) { + var adown = a.nodeType === 9 ? a.documentElement : a, + bup = b && b.parentNode; + return a === bup || !!( bup && bup.nodeType === 1 && ( + adown.contains ? + adown.contains( bup ) : + a.compareDocumentPosition && a.compareDocumentPosition( bup ) & 16 + )); + } : + function( a, b ) { + if ( b ) { + while ( (b = b.parentNode) ) { + if ( b === a ) { + return true; + } + } + } + return false; + }; + + /* Sorting + ---------------------------------------------------------------------- */ + + // Document order sorting + sortOrder = hasCompare ? + function( a, b ) { + + // Flag for duplicate removal + if ( a === b ) { + hasDuplicate = true; + return 0; + } + + // Sort on method existence if only one input has compareDocumentPosition + var compare = !a.compareDocumentPosition - !b.compareDocumentPosition; + if ( compare ) { + return compare; + } + + // Calculate position if both inputs belong to the same document + compare = ( a.ownerDocument || a ) === ( b.ownerDocument || b ) ? + a.compareDocumentPosition( b ) : + + // Otherwise we know they are disconnected + 1; + + // Disconnected nodes + if ( compare & 1 || + (!support.sortDetached && b.compareDocumentPosition( a ) === compare) ) { + + // Choose the first element that is related to our preferred document + if ( a === document || a.ownerDocument === preferredDoc && contains(preferredDoc, a) ) { + return -1; + } + if ( b === document || b.ownerDocument === preferredDoc && contains(preferredDoc, b) ) { + return 1; + } + + // Maintain original order + return sortInput ? + ( indexOf( sortInput, a ) - indexOf( sortInput, b ) ) : + 0; + } + + return compare & 4 ? -1 : 1; + } : + function( a, b ) { + // Exit early if the nodes are identical + if ( a === b ) { + hasDuplicate = true; + return 0; + } + + var cur, + i = 0, + aup = a.parentNode, + bup = b.parentNode, + ap = [ a ], + bp = [ b ]; + + // Parentless nodes are either documents or disconnected + if ( !aup || !bup ) { + return a === document ? -1 : + b === document ? 1 : + aup ? -1 : + bup ? 1 : + sortInput ? + ( indexOf( sortInput, a ) - indexOf( sortInput, b ) ) : + 0; + + // If the nodes are siblings, we can do a quick check + } else if ( aup === bup ) { + return siblingCheck( a, b ); + } + + // Otherwise we need full lists of their ancestors for comparison + cur = a; + while ( (cur = cur.parentNode) ) { + ap.unshift( cur ); + } + cur = b; + while ( (cur = cur.parentNode) ) { + bp.unshift( cur ); + } + + // Walk down the tree looking for a discrepancy + while ( ap[i] === bp[i] ) { + i++; + } + + return i ? + // Do a sibling check if the nodes have a common ancestor + siblingCheck( ap[i], bp[i] ) : + + // Otherwise nodes in our document sort first + ap[i] === preferredDoc ? -1 : + bp[i] === preferredDoc ? 1 : + 0; + }; + + return document; +}; + +Sizzle.matches = function( expr, elements ) { + return Sizzle( expr, null, null, elements ); +}; + +Sizzle.matchesSelector = function( elem, expr ) { + // Set document vars if needed + if ( ( elem.ownerDocument || elem ) !== document ) { + setDocument( elem ); + } + + if ( support.matchesSelector && documentIsHTML && + !nonnativeSelectorCache[ expr + " " ] && + ( !rbuggyMatches || !rbuggyMatches.test( expr ) ) && + ( !rbuggyQSA || !rbuggyQSA.test( expr ) ) ) { + + try { + var ret = matches.call( elem, expr ); + + // IE 9's matchesSelector returns false on disconnected nodes + if ( ret || support.disconnectedMatch || + // As well, disconnected nodes are said to be in a document + // fragment in IE 9 + elem.document && elem.document.nodeType !== 11 ) { + return ret; + } + } catch (e) { + nonnativeSelectorCache( expr, true ); + } + } + + return Sizzle( expr, document, null, [ elem ] ).length > 0; +}; + +Sizzle.contains = function( context, elem ) { + // Set document vars if needed + if ( ( context.ownerDocument || context ) !== document ) { + setDocument( context ); + } + return contains( context, elem ); +}; + +Sizzle.attr = function( elem, name ) { + // Set document vars if needed + if ( ( elem.ownerDocument || elem ) !== document ) { + setDocument( elem ); + } + + var fn = Expr.attrHandle[ name.toLowerCase() ], + // Don't get fooled by Object.prototype properties (jQuery #13807) + val = fn && hasOwn.call( Expr.attrHandle, name.toLowerCase() ) ? + fn( elem, name, !documentIsHTML ) : + undefined; + + return val !== undefined ? + val : + support.attributes || !documentIsHTML ? + elem.getAttribute( name ) : + (val = elem.getAttributeNode(name)) && val.specified ? + val.value : + null; +}; + +Sizzle.escape = function( sel ) { + return (sel + "").replace( rcssescape, fcssescape ); +}; + +Sizzle.error = function( msg ) { + throw new Error( "Syntax error, unrecognized expression: " + msg ); +}; + +/** + * Document sorting and removing duplicates + * @param {ArrayLike} results + */ +Sizzle.uniqueSort = function( results ) { + var elem, + duplicates = [], + j = 0, + i = 0; + + // Unless we *know* we can detect duplicates, assume their presence + hasDuplicate = !support.detectDuplicates; + sortInput = !support.sortStable && results.slice( 0 ); + results.sort( sortOrder ); + + if ( hasDuplicate ) { + while ( (elem = results[i++]) ) { + if ( elem === results[ i ] ) { + j = duplicates.push( i ); + } + } + while ( j-- ) { + results.splice( duplicates[ j ], 1 ); + } + } + + // Clear input after sorting to release objects + // See https://github.com/jquery/sizzle/pull/225 + sortInput = null; + + return results; +}; + +/** + * Utility function for retrieving the text value of an array of DOM nodes + * @param {Array|Element} elem + */ +getText = Sizzle.getText = function( elem ) { + var node, + ret = "", + i = 0, + nodeType = elem.nodeType; + + if ( !nodeType ) { + // If no nodeType, this is expected to be an array + while ( (node = elem[i++]) ) { + // Do not traverse comment nodes + ret += getText( node ); + } + } else if ( nodeType === 1 || nodeType === 9 || nodeType === 11 ) { + // Use textContent for elements + // innerText usage removed for consistency of new lines (jQuery #11153) + if ( typeof elem.textContent === "string" ) { + return elem.textContent; + } else { + // Traverse its children + for ( elem = elem.firstChild; elem; elem = elem.nextSibling ) { + ret += getText( elem ); + } + } + } else if ( nodeType === 3 || nodeType === 4 ) { + return elem.nodeValue; + } + // Do not include comment or processing instruction nodes + + return ret; +}; + +Expr = Sizzle.selectors = { + + // Can be adjusted by the user + cacheLength: 50, + + createPseudo: markFunction, + + match: matchExpr, + + attrHandle: {}, + + find: {}, + + relative: { + ">": { dir: "parentNode", first: true }, + " ": { dir: "parentNode" }, + "+": { dir: "previousSibling", first: true }, + "~": { dir: "previousSibling" } + }, + + preFilter: { + "ATTR": function( match ) { + match[1] = match[1].replace( runescape, funescape ); + + // Move the given value to match[3] whether quoted or unquoted + match[3] = ( match[3] || match[4] || match[5] || "" ).replace( runescape, funescape ); + + if ( match[2] === "~=" ) { + match[3] = " " + match[3] + " "; + } + + return match.slice( 0, 4 ); + }, + + "CHILD": function( match ) { + /* matches from matchExpr["CHILD"] + 1 type (only|nth|...) + 2 what (child|of-type) + 3 argument (even|odd|\d*|\d*n([+-]\d+)?|...) + 4 xn-component of xn+y argument ([+-]?\d*n|) + 5 sign of xn-component + 6 x of xn-component + 7 sign of y-component + 8 y of y-component + */ + match[1] = match[1].toLowerCase(); + + if ( match[1].slice( 0, 3 ) === "nth" ) { + // nth-* requires argument + if ( !match[3] ) { + Sizzle.error( match[0] ); + } + + // numeric x and y parameters for Expr.filter.CHILD + // remember that false/true cast respectively to 0/1 + match[4] = +( match[4] ? match[5] + (match[6] || 1) : 2 * ( match[3] === "even" || match[3] === "odd" ) ); + match[5] = +( ( match[7] + match[8] ) || match[3] === "odd" ); + + // other types prohibit arguments + } else if ( match[3] ) { + Sizzle.error( match[0] ); + } + + return match; + }, + + "PSEUDO": function( match ) { + var excess, + unquoted = !match[6] && match[2]; + + if ( matchExpr["CHILD"].test( match[0] ) ) { + return null; + } + + // Accept quoted arguments as-is + if ( match[3] ) { + match[2] = match[4] || match[5] || ""; + + // Strip excess characters from unquoted arguments + } else if ( unquoted && rpseudo.test( unquoted ) && + // Get excess from tokenize (recursively) + (excess = tokenize( unquoted, true )) && + // advance to the next closing parenthesis + (excess = unquoted.indexOf( ")", unquoted.length - excess ) - unquoted.length) ) { + + // excess is a negative index + match[0] = match[0].slice( 0, excess ); + match[2] = unquoted.slice( 0, excess ); + } + + // Return only captures needed by the pseudo filter method (type and argument) + return match.slice( 0, 3 ); + } + }, + + filter: { + + "TAG": function( nodeNameSelector ) { + var nodeName = nodeNameSelector.replace( runescape, funescape ).toLowerCase(); + return nodeNameSelector === "*" ? + function() { return true; } : + function( elem ) { + return elem.nodeName && elem.nodeName.toLowerCase() === nodeName; + }; + }, + + "CLASS": function( className ) { + var pattern = classCache[ className + " " ]; + + return pattern || + (pattern = new RegExp( "(^|" + whitespace + ")" + className + "(" + whitespace + "|$)" )) && + classCache( className, function( elem ) { + return pattern.test( typeof elem.className === "string" && elem.className || typeof elem.getAttribute !== "undefined" && elem.getAttribute("class") || "" ); + }); + }, + + "ATTR": function( name, operator, check ) { + return function( elem ) { + var result = Sizzle.attr( elem, name ); + + if ( result == null ) { + return operator === "!="; + } + if ( !operator ) { + return true; + } + + result += ""; + + return operator === "=" ? result === check : + operator === "!=" ? result !== check : + operator === "^=" ? check && result.indexOf( check ) === 0 : + operator === "*=" ? check && result.indexOf( check ) > -1 : + operator === "$=" ? check && result.slice( -check.length ) === check : + operator === "~=" ? ( " " + result.replace( rwhitespace, " " ) + " " ).indexOf( check ) > -1 : + operator === "|=" ? result === check || result.slice( 0, check.length + 1 ) === check + "-" : + false; + }; + }, + + "CHILD": function( type, what, argument, first, last ) { + var simple = type.slice( 0, 3 ) !== "nth", + forward = type.slice( -4 ) !== "last", + ofType = what === "of-type"; + + return first === 1 && last === 0 ? + + // Shortcut for :nth-*(n) + function( elem ) { + return !!elem.parentNode; + } : + + function( elem, context, xml ) { + var cache, uniqueCache, outerCache, node, nodeIndex, start, + dir = simple !== forward ? "nextSibling" : "previousSibling", + parent = elem.parentNode, + name = ofType && elem.nodeName.toLowerCase(), + useCache = !xml && !ofType, + diff = false; + + if ( parent ) { + + // :(first|last|only)-(child|of-type) + if ( simple ) { + while ( dir ) { + node = elem; + while ( (node = node[ dir ]) ) { + if ( ofType ? + node.nodeName.toLowerCase() === name : + node.nodeType === 1 ) { + + return false; + } + } + // Reverse direction for :only-* (if we haven't yet done so) + start = dir = type === "only" && !start && "nextSibling"; + } + return true; + } + + start = [ forward ? parent.firstChild : parent.lastChild ]; + + // non-xml :nth-child(...) stores cache data on `parent` + if ( forward && useCache ) { + + // Seek `elem` from a previously-cached index + + // ...in a gzip-friendly way + node = parent; + outerCache = node[ expando ] || (node[ expando ] = {}); + + // Support: IE <9 only + // Defend against cloned attroperties (jQuery gh-1709) + uniqueCache = outerCache[ node.uniqueID ] || + (outerCache[ node.uniqueID ] = {}); + + cache = uniqueCache[ type ] || []; + nodeIndex = cache[ 0 ] === dirruns && cache[ 1 ]; + diff = nodeIndex && cache[ 2 ]; + node = nodeIndex && parent.childNodes[ nodeIndex ]; + + while ( (node = ++nodeIndex && node && node[ dir ] || + + // Fallback to seeking `elem` from the start + (diff = nodeIndex = 0) || start.pop()) ) { + + // When found, cache indexes on `parent` and break + if ( node.nodeType === 1 && ++diff && node === elem ) { + uniqueCache[ type ] = [ dirruns, nodeIndex, diff ]; + break; + } + } + + } else { + // Use previously-cached element index if available + if ( useCache ) { + // ...in a gzip-friendly way + node = elem; + outerCache = node[ expando ] || (node[ expando ] = {}); + + // Support: IE <9 only + // Defend against cloned attroperties (jQuery gh-1709) + uniqueCache = outerCache[ node.uniqueID ] || + (outerCache[ node.uniqueID ] = {}); + + cache = uniqueCache[ type ] || []; + nodeIndex = cache[ 0 ] === dirruns && cache[ 1 ]; + diff = nodeIndex; + } + + // xml :nth-child(...) + // or :nth-last-child(...) or :nth(-last)?-of-type(...) + if ( diff === false ) { + // Use the same loop as above to seek `elem` from the start + while ( (node = ++nodeIndex && node && node[ dir ] || + (diff = nodeIndex = 0) || start.pop()) ) { + + if ( ( ofType ? + node.nodeName.toLowerCase() === name : + node.nodeType === 1 ) && + ++diff ) { + + // Cache the index of each encountered element + if ( useCache ) { + outerCache = node[ expando ] || (node[ expando ] = {}); + + // Support: IE <9 only + // Defend against cloned attroperties (jQuery gh-1709) + uniqueCache = outerCache[ node.uniqueID ] || + (outerCache[ node.uniqueID ] = {}); + + uniqueCache[ type ] = [ dirruns, diff ]; + } + + if ( node === elem ) { + break; + } + } + } + } + } + + // Incorporate the offset, then check against cycle size + diff -= last; + return diff === first || ( diff % first === 0 && diff / first >= 0 ); + } + }; + }, + + "PSEUDO": function( pseudo, argument ) { + // pseudo-class names are case-insensitive + // http://www.w3.org/TR/selectors/#pseudo-classes + // Prioritize by case sensitivity in case custom pseudos are added with uppercase letters + // Remember that setFilters inherits from pseudos + var args, + fn = Expr.pseudos[ pseudo ] || Expr.setFilters[ pseudo.toLowerCase() ] || + Sizzle.error( "unsupported pseudo: " + pseudo ); + + // The user may use createPseudo to indicate that + // arguments are needed to create the filter function + // just as Sizzle does + if ( fn[ expando ] ) { + return fn( argument ); + } + + // But maintain support for old signatures + if ( fn.length > 1 ) { + args = [ pseudo, pseudo, "", argument ]; + return Expr.setFilters.hasOwnProperty( pseudo.toLowerCase() ) ? + markFunction(function( seed, matches ) { + var idx, + matched = fn( seed, argument ), + i = matched.length; + while ( i-- ) { + idx = indexOf( seed, matched[i] ); + seed[ idx ] = !( matches[ idx ] = matched[i] ); + } + }) : + function( elem ) { + return fn( elem, 0, args ); + }; + } + + return fn; + } + }, + + pseudos: { + // Potentially complex pseudos + "not": markFunction(function( selector ) { + // Trim the selector passed to compile + // to avoid treating leading and trailing + // spaces as combinators + var input = [], + results = [], + matcher = compile( selector.replace( rtrim, "$1" ) ); + + return matcher[ expando ] ? + markFunction(function( seed, matches, context, xml ) { + var elem, + unmatched = matcher( seed, null, xml, [] ), + i = seed.length; + + // Match elements unmatched by `matcher` + while ( i-- ) { + if ( (elem = unmatched[i]) ) { + seed[i] = !(matches[i] = elem); + } + } + }) : + function( elem, context, xml ) { + input[0] = elem; + matcher( input, null, xml, results ); + // Don't keep the element (issue #299) + input[0] = null; + return !results.pop(); + }; + }), + + "has": markFunction(function( selector ) { + return function( elem ) { + return Sizzle( selector, elem ).length > 0; + }; + }), + + "contains": markFunction(function( text ) { + text = text.replace( runescape, funescape ); + return function( elem ) { + return ( elem.textContent || getText( elem ) ).indexOf( text ) > -1; + }; + }), + + // "Whether an element is represented by a :lang() selector + // is based solely on the element's language value + // being equal to the identifier C, + // or beginning with the identifier C immediately followed by "-". + // The matching of C against the element's language value is performed case-insensitively. + // The identifier C does not have to be a valid language name." + // http://www.w3.org/TR/selectors/#lang-pseudo + "lang": markFunction( function( lang ) { + // lang value must be a valid identifier + if ( !ridentifier.test(lang || "") ) { + Sizzle.error( "unsupported lang: " + lang ); + } + lang = lang.replace( runescape, funescape ).toLowerCase(); + return function( elem ) { + var elemLang; + do { + if ( (elemLang = documentIsHTML ? + elem.lang : + elem.getAttribute("xml:lang") || elem.getAttribute("lang")) ) { + + elemLang = elemLang.toLowerCase(); + return elemLang === lang || elemLang.indexOf( lang + "-" ) === 0; + } + } while ( (elem = elem.parentNode) && elem.nodeType === 1 ); + return false; + }; + }), + + // Miscellaneous + "target": function( elem ) { + var hash = window.location && window.location.hash; + return hash && hash.slice( 1 ) === elem.id; + }, + + "root": function( elem ) { + return elem === docElem; + }, + + "focus": function( elem ) { + return elem === document.activeElement && (!document.hasFocus || document.hasFocus()) && !!(elem.type || elem.href || ~elem.tabIndex); + }, + + // Boolean properties + "enabled": createDisabledPseudo( false ), + "disabled": createDisabledPseudo( true ), + + "checked": function( elem ) { + // In CSS3, :checked should return both checked and selected elements + // http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked + var nodeName = elem.nodeName.toLowerCase(); + return (nodeName === "input" && !!elem.checked) || (nodeName === "option" && !!elem.selected); + }, + + "selected": function( elem ) { + // Accessing this property makes selected-by-default + // options in Safari work properly + if ( elem.parentNode ) { + elem.parentNode.selectedIndex; + } + + return elem.selected === true; + }, + + // Contents + "empty": function( elem ) { + // http://www.w3.org/TR/selectors/#empty-pseudo + // :empty is negated by element (1) or content nodes (text: 3; cdata: 4; entity ref: 5), + // but not by others (comment: 8; processing instruction: 7; etc.) + // nodeType < 6 works because attributes (2) do not appear as children + for ( elem = elem.firstChild; elem; elem = elem.nextSibling ) { + if ( elem.nodeType < 6 ) { + return false; + } + } + return true; + }, + + "parent": function( elem ) { + return !Expr.pseudos["empty"]( elem ); + }, + + // Element/input types + "header": function( elem ) { + return rheader.test( elem.nodeName ); + }, + + "input": function( elem ) { + return rinputs.test( elem.nodeName ); + }, + + "button": function( elem ) { + var name = elem.nodeName.toLowerCase(); + return name === "input" && elem.type === "button" || name === "button"; + }, + + "text": function( elem ) { + var attr; + return elem.nodeName.toLowerCase() === "input" && + elem.type === "text" && + + // Support: IE<8 + // New HTML5 attribute values (e.g., "search") appear with elem.type === "text" + ( (attr = elem.getAttribute("type")) == null || attr.toLowerCase() === "text" ); + }, + + // Position-in-collection + "first": createPositionalPseudo(function() { + return [ 0 ]; + }), + + "last": createPositionalPseudo(function( matchIndexes, length ) { + return [ length - 1 ]; + }), + + "eq": createPositionalPseudo(function( matchIndexes, length, argument ) { + return [ argument < 0 ? argument + length : argument ]; + }), + + "even": createPositionalPseudo(function( matchIndexes, length ) { + var i = 0; + for ( ; i < length; i += 2 ) { + matchIndexes.push( i ); + } + return matchIndexes; + }), + + "odd": createPositionalPseudo(function( matchIndexes, length ) { + var i = 1; + for ( ; i < length; i += 2 ) { + matchIndexes.push( i ); + } + return matchIndexes; + }), + + "lt": createPositionalPseudo(function( matchIndexes, length, argument ) { + var i = argument < 0 ? + argument + length : + argument > length ? + length : + argument; + for ( ; --i >= 0; ) { + matchIndexes.push( i ); + } + return matchIndexes; + }), + + "gt": createPositionalPseudo(function( matchIndexes, length, argument ) { + var i = argument < 0 ? argument + length : argument; + for ( ; ++i < length; ) { + matchIndexes.push( i ); + } + return matchIndexes; + }) + } +}; + +Expr.pseudos["nth"] = Expr.pseudos["eq"]; + +// Add button/input type pseudos +for ( i in { radio: true, checkbox: true, file: true, password: true, image: true } ) { + Expr.pseudos[ i ] = createInputPseudo( i ); +} +for ( i in { submit: true, reset: true } ) { + Expr.pseudos[ i ] = createButtonPseudo( i ); +} + +// Easy API for creating new setFilters +function setFilters() {} +setFilters.prototype = Expr.filters = Expr.pseudos; +Expr.setFilters = new setFilters(); + +tokenize = Sizzle.tokenize = function( selector, parseOnly ) { + var matched, match, tokens, type, + soFar, groups, preFilters, + cached = tokenCache[ selector + " " ]; + + if ( cached ) { + return parseOnly ? 0 : cached.slice( 0 ); + } + + soFar = selector; + groups = []; + preFilters = Expr.preFilter; + + while ( soFar ) { + + // Comma and first run + if ( !matched || (match = rcomma.exec( soFar )) ) { + if ( match ) { + // Don't consume trailing commas as valid + soFar = soFar.slice( match[0].length ) || soFar; + } + groups.push( (tokens = []) ); + } + + matched = false; + + // Combinators + if ( (match = rcombinators.exec( soFar )) ) { + matched = match.shift(); + tokens.push({ + value: matched, + // Cast descendant combinators to space + type: match[0].replace( rtrim, " " ) + }); + soFar = soFar.slice( matched.length ); + } + + // Filters + for ( type in Expr.filter ) { + if ( (match = matchExpr[ type ].exec( soFar )) && (!preFilters[ type ] || + (match = preFilters[ type ]( match ))) ) { + matched = match.shift(); + tokens.push({ + value: matched, + type: type, + matches: match + }); + soFar = soFar.slice( matched.length ); + } + } + + if ( !matched ) { + break; + } + } + + // Return the length of the invalid excess + // if we're just parsing + // Otherwise, throw an error or return tokens + return parseOnly ? + soFar.length : + soFar ? + Sizzle.error( selector ) : + // Cache the tokens + tokenCache( selector, groups ).slice( 0 ); +}; + +function toSelector( tokens ) { + var i = 0, + len = tokens.length, + selector = ""; + for ( ; i < len; i++ ) { + selector += tokens[i].value; + } + return selector; +} + +function addCombinator( matcher, combinator, base ) { + var dir = combinator.dir, + skip = combinator.next, + key = skip || dir, + checkNonElements = base && key === "parentNode", + doneName = done++; + + return combinator.first ? + // Check against closest ancestor/preceding element + function( elem, context, xml ) { + while ( (elem = elem[ dir ]) ) { + if ( elem.nodeType === 1 || checkNonElements ) { + return matcher( elem, context, xml ); + } + } + return false; + } : + + // Check against all ancestor/preceding elements + function( elem, context, xml ) { + var oldCache, uniqueCache, outerCache, + newCache = [ dirruns, doneName ]; + + // We can't set arbitrary data on XML nodes, so they don't benefit from combinator caching + if ( xml ) { + while ( (elem = elem[ dir ]) ) { + if ( elem.nodeType === 1 || checkNonElements ) { + if ( matcher( elem, context, xml ) ) { + return true; + } + } + } + } else { + while ( (elem = elem[ dir ]) ) { + if ( elem.nodeType === 1 || checkNonElements ) { + outerCache = elem[ expando ] || (elem[ expando ] = {}); + + // Support: IE <9 only + // Defend against cloned attroperties (jQuery gh-1709) + uniqueCache = outerCache[ elem.uniqueID ] || (outerCache[ elem.uniqueID ] = {}); + + if ( skip && skip === elem.nodeName.toLowerCase() ) { + elem = elem[ dir ] || elem; + } else if ( (oldCache = uniqueCache[ key ]) && + oldCache[ 0 ] === dirruns && oldCache[ 1 ] === doneName ) { + + // Assign to newCache so results back-propagate to previous elements + return (newCache[ 2 ] = oldCache[ 2 ]); + } else { + // Reuse newcache so results back-propagate to previous elements + uniqueCache[ key ] = newCache; + + // A match means we're done; a fail means we have to keep checking + if ( (newCache[ 2 ] = matcher( elem, context, xml )) ) { + return true; + } + } + } + } + } + return false; + }; +} + +function elementMatcher( matchers ) { + return matchers.length > 1 ? + function( elem, context, xml ) { + var i = matchers.length; + while ( i-- ) { + if ( !matchers[i]( elem, context, xml ) ) { + return false; + } + } + return true; + } : + matchers[0]; +} + +function multipleContexts( selector, contexts, results ) { + var i = 0, + len = contexts.length; + for ( ; i < len; i++ ) { + Sizzle( selector, contexts[i], results ); + } + return results; +} + +function condense( unmatched, map, filter, context, xml ) { + var elem, + newUnmatched = [], + i = 0, + len = unmatched.length, + mapped = map != null; + + for ( ; i < len; i++ ) { + if ( (elem = unmatched[i]) ) { + if ( !filter || filter( elem, context, xml ) ) { + newUnmatched.push( elem ); + if ( mapped ) { + map.push( i ); + } + } + } + } + + return newUnmatched; +} + +function setMatcher( preFilter, selector, matcher, postFilter, postFinder, postSelector ) { + if ( postFilter && !postFilter[ expando ] ) { + postFilter = setMatcher( postFilter ); + } + if ( postFinder && !postFinder[ expando ] ) { + postFinder = setMatcher( postFinder, postSelector ); + } + return markFunction(function( seed, results, context, xml ) { + var temp, i, elem, + preMap = [], + postMap = [], + preexisting = results.length, + + // Get initial elements from seed or context + elems = seed || multipleContexts( selector || "*", context.nodeType ? [ context ] : context, [] ), + + // Prefilter to get matcher input, preserving a map for seed-results synchronization + matcherIn = preFilter && ( seed || !selector ) ? + condense( elems, preMap, preFilter, context, xml ) : + elems, + + matcherOut = matcher ? + // If we have a postFinder, or filtered seed, or non-seed postFilter or preexisting results, + postFinder || ( seed ? preFilter : preexisting || postFilter ) ? + + // ...intermediate processing is necessary + [] : + + // ...otherwise use results directly + results : + matcherIn; + + // Find primary matches + if ( matcher ) { + matcher( matcherIn, matcherOut, context, xml ); + } + + // Apply postFilter + if ( postFilter ) { + temp = condense( matcherOut, postMap ); + postFilter( temp, [], context, xml ); + + // Un-match failing elements by moving them back to matcherIn + i = temp.length; + while ( i-- ) { + if ( (elem = temp[i]) ) { + matcherOut[ postMap[i] ] = !(matcherIn[ postMap[i] ] = elem); + } + } + } + + if ( seed ) { + if ( postFinder || preFilter ) { + if ( postFinder ) { + // Get the final matcherOut by condensing this intermediate into postFinder contexts + temp = []; + i = matcherOut.length; + while ( i-- ) { + if ( (elem = matcherOut[i]) ) { + // Restore matcherIn since elem is not yet a final match + temp.push( (matcherIn[i] = elem) ); + } + } + postFinder( null, (matcherOut = []), temp, xml ); + } + + // Move matched elements from seed to results to keep them synchronized + i = matcherOut.length; + while ( i-- ) { + if ( (elem = matcherOut[i]) && + (temp = postFinder ? indexOf( seed, elem ) : preMap[i]) > -1 ) { + + seed[temp] = !(results[temp] = elem); + } + } + } + + // Add elements to results, through postFinder if defined + } else { + matcherOut = condense( + matcherOut === results ? + matcherOut.splice( preexisting, matcherOut.length ) : + matcherOut + ); + if ( postFinder ) { + postFinder( null, results, matcherOut, xml ); + } else { + push.apply( results, matcherOut ); + } + } + }); +} + +function matcherFromTokens( tokens ) { + var checkContext, matcher, j, + len = tokens.length, + leadingRelative = Expr.relative[ tokens[0].type ], + implicitRelative = leadingRelative || Expr.relative[" "], + i = leadingRelative ? 1 : 0, + + // The foundational matcher ensures that elements are reachable from top-level context(s) + matchContext = addCombinator( function( elem ) { + return elem === checkContext; + }, implicitRelative, true ), + matchAnyContext = addCombinator( function( elem ) { + return indexOf( checkContext, elem ) > -1; + }, implicitRelative, true ), + matchers = [ function( elem, context, xml ) { + var ret = ( !leadingRelative && ( xml || context !== outermostContext ) ) || ( + (checkContext = context).nodeType ? + matchContext( elem, context, xml ) : + matchAnyContext( elem, context, xml ) ); + // Avoid hanging onto element (issue #299) + checkContext = null; + return ret; + } ]; + + for ( ; i < len; i++ ) { + if ( (matcher = Expr.relative[ tokens[i].type ]) ) { + matchers = [ addCombinator(elementMatcher( matchers ), matcher) ]; + } else { + matcher = Expr.filter[ tokens[i].type ].apply( null, tokens[i].matches ); + + // Return special upon seeing a positional matcher + if ( matcher[ expando ] ) { + // Find the next relative operator (if any) for proper handling + j = ++i; + for ( ; j < len; j++ ) { + if ( Expr.relative[ tokens[j].type ] ) { + break; + } + } + return setMatcher( + i > 1 && elementMatcher( matchers ), + i > 1 && toSelector( + // If the preceding token was a descendant combinator, insert an implicit any-element `*` + tokens.slice( 0, i - 1 ).concat({ value: tokens[ i - 2 ].type === " " ? "*" : "" }) + ).replace( rtrim, "$1" ), + matcher, + i < j && matcherFromTokens( tokens.slice( i, j ) ), + j < len && matcherFromTokens( (tokens = tokens.slice( j )) ), + j < len && toSelector( tokens ) + ); + } + matchers.push( matcher ); + } + } + + return elementMatcher( matchers ); +} + +function matcherFromGroupMatchers( elementMatchers, setMatchers ) { + var bySet = setMatchers.length > 0, + byElement = elementMatchers.length > 0, + superMatcher = function( seed, context, xml, results, outermost ) { + var elem, j, matcher, + matchedCount = 0, + i = "0", + unmatched = seed && [], + setMatched = [], + contextBackup = outermostContext, + // We must always have either seed elements or outermost context + elems = seed || byElement && Expr.find["TAG"]( "*", outermost ), + // Use integer dirruns iff this is the outermost matcher + dirrunsUnique = (dirruns += contextBackup == null ? 1 : Math.random() || 0.1), + len = elems.length; + + if ( outermost ) { + outermostContext = context === document || context || outermost; + } + + // Add elements passing elementMatchers directly to results + // Support: IE<9, Safari + // Tolerate NodeList properties (IE: "length"; Safari: <number>) matching elements by id + for ( ; i !== len && (elem = elems[i]) != null; i++ ) { + if ( byElement && elem ) { + j = 0; + if ( !context && elem.ownerDocument !== document ) { + setDocument( elem ); + xml = !documentIsHTML; + } + while ( (matcher = elementMatchers[j++]) ) { + if ( matcher( elem, context || document, xml) ) { + results.push( elem ); + break; + } + } + if ( outermost ) { + dirruns = dirrunsUnique; + } + } + + // Track unmatched elements for set filters + if ( bySet ) { + // They will have gone through all possible matchers + if ( (elem = !matcher && elem) ) { + matchedCount--; + } + + // Lengthen the array for every element, matched or not + if ( seed ) { + unmatched.push( elem ); + } + } + } + + // `i` is now the count of elements visited above, and adding it to `matchedCount` + // makes the latter nonnegative. + matchedCount += i; + + // Apply set filters to unmatched elements + // NOTE: This can be skipped if there are no unmatched elements (i.e., `matchedCount` + // equals `i`), unless we didn't visit _any_ elements in the above loop because we have + // no element matchers and no seed. + // Incrementing an initially-string "0" `i` allows `i` to remain a string only in that + // case, which will result in a "00" `matchedCount` that differs from `i` but is also + // numerically zero. + if ( bySet && i !== matchedCount ) { + j = 0; + while ( (matcher = setMatchers[j++]) ) { + matcher( unmatched, setMatched, context, xml ); + } + + if ( seed ) { + // Reintegrate element matches to eliminate the need for sorting + if ( matchedCount > 0 ) { + while ( i-- ) { + if ( !(unmatched[i] || setMatched[i]) ) { + setMatched[i] = pop.call( results ); + } + } + } + + // Discard index placeholder values to get only actual matches + setMatched = condense( setMatched ); + } + + // Add matches to results + push.apply( results, setMatched ); + + // Seedless set matches succeeding multiple successful matchers stipulate sorting + if ( outermost && !seed && setMatched.length > 0 && + ( matchedCount + setMatchers.length ) > 1 ) { + + Sizzle.uniqueSort( results ); + } + } + + // Override manipulation of globals by nested matchers + if ( outermost ) { + dirruns = dirrunsUnique; + outermostContext = contextBackup; + } + + return unmatched; + }; + + return bySet ? + markFunction( superMatcher ) : + superMatcher; +} + +compile = Sizzle.compile = function( selector, match /* Internal Use Only */ ) { + var i, + setMatchers = [], + elementMatchers = [], + cached = compilerCache[ selector + " " ]; + + if ( !cached ) { + // Generate a function of recursive functions that can be used to check each element + if ( !match ) { + match = tokenize( selector ); + } + i = match.length; + while ( i-- ) { + cached = matcherFromTokens( match[i] ); + if ( cached[ expando ] ) { + setMatchers.push( cached ); + } else { + elementMatchers.push( cached ); + } + } + + // Cache the compiled function + cached = compilerCache( selector, matcherFromGroupMatchers( elementMatchers, setMatchers ) ); + + // Save selector and tokenization + cached.selector = selector; + } + return cached; +}; + +/** + * A low-level selection function that works with Sizzle's compiled + * selector functions + * @param {String|Function} selector A selector or a pre-compiled + * selector function built with Sizzle.compile + * @param {Element} context + * @param {Array} [results] + * @param {Array} [seed] A set of elements to match against + */ +select = Sizzle.select = function( selector, context, results, seed ) { + var i, tokens, token, type, find, + compiled = typeof selector === "function" && selector, + match = !seed && tokenize( (selector = compiled.selector || selector) ); + + results = results || []; + + // Try to minimize operations if there is only one selector in the list and no seed + // (the latter of which guarantees us context) + if ( match.length === 1 ) { + + // Reduce context if the leading compound selector is an ID + tokens = match[0] = match[0].slice( 0 ); + if ( tokens.length > 2 && (token = tokens[0]).type === "ID" && + context.nodeType === 9 && documentIsHTML && Expr.relative[ tokens[1].type ] ) { + + context = ( Expr.find["ID"]( token.matches[0].replace(runescape, funescape), context ) || [] )[0]; + if ( !context ) { + return results; + + // Precompiled matchers will still verify ancestry, so step up a level + } else if ( compiled ) { + context = context.parentNode; + } + + selector = selector.slice( tokens.shift().value.length ); + } + + // Fetch a seed set for right-to-left matching + i = matchExpr["needsContext"].test( selector ) ? 0 : tokens.length; + while ( i-- ) { + token = tokens[i]; + + // Abort if we hit a combinator + if ( Expr.relative[ (type = token.type) ] ) { + break; + } + if ( (find = Expr.find[ type ]) ) { + // Search, expanding context for leading sibling combinators + if ( (seed = find( + token.matches[0].replace( runescape, funescape ), + rsibling.test( tokens[0].type ) && testContext( context.parentNode ) || context + )) ) { + + // If seed is empty or no tokens remain, we can return early + tokens.splice( i, 1 ); + selector = seed.length && toSelector( tokens ); + if ( !selector ) { + push.apply( results, seed ); + return results; + } + + break; + } + } + } + } + + // Compile and execute a filtering function if one is not provided + // Provide `match` to avoid retokenization if we modified the selector above + ( compiled || compile( selector, match ) )( + seed, + context, + !documentIsHTML, + results, + !context || rsibling.test( selector ) && testContext( context.parentNode ) || context + ); + return results; +}; + +// One-time assignments + +// Sort stability +support.sortStable = expando.split("").sort( sortOrder ).join("") === expando; + +// Support: Chrome 14-35+ +// Always assume duplicates if they aren't passed to the comparison function +support.detectDuplicates = !!hasDuplicate; + +// Initialize against the default document +setDocument(); + +// Support: Webkit<537.32 - Safari 6.0.3/Chrome 25 (fixed in Chrome 27) +// Detached nodes confoundingly follow *each other* +support.sortDetached = assert(function( el ) { + // Should return 1, but returns 4 (following) + return el.compareDocumentPosition( document.createElement("fieldset") ) & 1; +}); + +// Support: IE<8 +// Prevent attribute/property "interpolation" +// https://msdn.microsoft.com/en-us/library/ms536429%28VS.85%29.aspx +if ( !assert(function( el ) { + el.innerHTML = "<a href='#'></a>"; + return el.firstChild.getAttribute("href") === "#" ; +}) ) { + addHandle( "type|href|height|width", function( elem, name, isXML ) { + if ( !isXML ) { + return elem.getAttribute( name, name.toLowerCase() === "type" ? 1 : 2 ); + } + }); +} + +// Support: IE<9 +// Use defaultValue in place of getAttribute("value") +if ( !support.attributes || !assert(function( el ) { + el.innerHTML = "<input/>"; + el.firstChild.setAttribute( "value", "" ); + return el.firstChild.getAttribute( "value" ) === ""; +}) ) { + addHandle( "value", function( elem, name, isXML ) { + if ( !isXML && elem.nodeName.toLowerCase() === "input" ) { + return elem.defaultValue; + } + }); +} + +// Support: IE<9 +// Use getAttributeNode to fetch booleans when getAttribute lies +if ( !assert(function( el ) { + return el.getAttribute("disabled") == null; +}) ) { + addHandle( booleans, function( elem, name, isXML ) { + var val; + if ( !isXML ) { + return elem[ name ] === true ? name.toLowerCase() : + (val = elem.getAttributeNode( name )) && val.specified ? + val.value : + null; + } + }); +} + +return Sizzle; + +})( window ); + + + +jQuery.find = Sizzle; +jQuery.expr = Sizzle.selectors; + +// Deprecated +jQuery.expr[ ":" ] = jQuery.expr.pseudos; +jQuery.uniqueSort = jQuery.unique = Sizzle.uniqueSort; +jQuery.text = Sizzle.getText; +jQuery.isXMLDoc = Sizzle.isXML; +jQuery.contains = Sizzle.contains; +jQuery.escapeSelector = Sizzle.escape; + + + + +var dir = function( elem, dir, until ) { + var matched = [], + truncate = until !== undefined; + + while ( ( elem = elem[ dir ] ) && elem.nodeType !== 9 ) { + if ( elem.nodeType === 1 ) { + if ( truncate && jQuery( elem ).is( until ) ) { + break; + } + matched.push( elem ); + } + } + return matched; +}; + + +var siblings = function( n, elem ) { + var matched = []; + + for ( ; n; n = n.nextSibling ) { + if ( n.nodeType === 1 && n !== elem ) { + matched.push( n ); + } + } + + return matched; +}; + + +var rneedsContext = jQuery.expr.match.needsContext; + + + +function nodeName( elem, name ) { + + return elem.nodeName && elem.nodeName.toLowerCase() === name.toLowerCase(); + +}; +var rsingleTag = ( /^<([a-z][^\/\0>:\x20\t\r\n\f]*)[\x20\t\r\n\f]*\/?>(?:<\/\1>|)$/i ); + + + +// Implement the identical functionality for filter and not +function winnow( elements, qualifier, not ) { + if ( isFunction( qualifier ) ) { + return jQuery.grep( elements, function( elem, i ) { + return !!qualifier.call( elem, i, elem ) !== not; + } ); + } + + // Single element + if ( qualifier.nodeType ) { + return jQuery.grep( elements, function( elem ) { + return ( elem === qualifier ) !== not; + } ); + } + + // Arraylike of elements (jQuery, arguments, Array) + if ( typeof qualifier !== "string" ) { + return jQuery.grep( elements, function( elem ) { + return ( indexOf.call( qualifier, elem ) > -1 ) !== not; + } ); + } + + // Filtered directly for both simple and complex selectors + return jQuery.filter( qualifier, elements, not ); +} + +jQuery.filter = function( expr, elems, not ) { + var elem = elems[ 0 ]; + + if ( not ) { + expr = ":not(" + expr + ")"; + } + + if ( elems.length === 1 && elem.nodeType === 1 ) { + return jQuery.find.matchesSelector( elem, expr ) ? [ elem ] : []; + } + + return jQuery.find.matches( expr, jQuery.grep( elems, function( elem ) { + return elem.nodeType === 1; + } ) ); +}; + +jQuery.fn.extend( { + find: function( selector ) { + var i, ret, + len = this.length, + self = this; + + if ( typeof selector !== "string" ) { + return this.pushStack( jQuery( selector ).filter( function() { + for ( i = 0; i < len; i++ ) { + if ( jQuery.contains( self[ i ], this ) ) { + return true; + } + } + } ) ); + } + + ret = this.pushStack( [] ); + + for ( i = 0; i < len; i++ ) { + jQuery.find( selector, self[ i ], ret ); + } + + return len > 1 ? jQuery.uniqueSort( ret ) : ret; + }, + filter: function( selector ) { + return this.pushStack( winnow( this, selector || [], false ) ); + }, + not: function( selector ) { + return this.pushStack( winnow( this, selector || [], true ) ); + }, + is: function( selector ) { + return !!winnow( + this, + + // If this is a positional/relative selector, check membership in the returned set + // so $("p:first").is("p:last") won't return true for a doc with two "p". + typeof selector === "string" && rneedsContext.test( selector ) ? + jQuery( selector ) : + selector || [], + false + ).length; + } +} ); + + +// Initialize a jQuery object + + +// A central reference to the root jQuery(document) +var rootjQuery, + + // A simple way to check for HTML strings + // Prioritize #id over <tag> to avoid XSS via location.hash (#9521) + // Strict HTML recognition (#11290: must start with <) + // Shortcut simple #id case for speed + rquickExpr = /^(?:\s*(<[\w\W]+>)[^>]*|#([\w-]+))$/, + + init = jQuery.fn.init = function( selector, context, root ) { + var match, elem; + + // HANDLE: $(""), $(null), $(undefined), $(false) + if ( !selector ) { + return this; + } + + // Method init() accepts an alternate rootjQuery + // so migrate can support jQuery.sub (gh-2101) + root = root || rootjQuery; + + // Handle HTML strings + if ( typeof selector === "string" ) { + if ( selector[ 0 ] === "<" && + selector[ selector.length - 1 ] === ">" && + selector.length >= 3 ) { + + // Assume that strings that start and end with <> are HTML and skip the regex check + match = [ null, selector, null ]; + + } else { + match = rquickExpr.exec( selector ); + } + + // Match html or make sure no context is specified for #id + if ( match && ( match[ 1 ] || !context ) ) { + + // HANDLE: $(html) -> $(array) + if ( match[ 1 ] ) { + context = context instanceof jQuery ? context[ 0 ] : context; + + // Option to run scripts is true for back-compat + // Intentionally let the error be thrown if parseHTML is not present + jQuery.merge( this, jQuery.parseHTML( + match[ 1 ], + context && context.nodeType ? context.ownerDocument || context : document, + true + ) ); + + // HANDLE: $(html, props) + if ( rsingleTag.test( match[ 1 ] ) && jQuery.isPlainObject( context ) ) { + for ( match in context ) { + + // Properties of context are called as methods if possible + if ( isFunction( this[ match ] ) ) { + this[ match ]( context[ match ] ); + + // ...and otherwise set as attributes + } else { + this.attr( match, context[ match ] ); + } + } + } + + return this; + + // HANDLE: $(#id) + } else { + elem = document.getElementById( match[ 2 ] ); + + if ( elem ) { + + // Inject the element directly into the jQuery object + this[ 0 ] = elem; + this.length = 1; + } + return this; + } + + // HANDLE: $(expr, $(...)) + } else if ( !context || context.jquery ) { + return ( context || root ).find( selector ); + + // HANDLE: $(expr, context) + // (which is just equivalent to: $(context).find(expr) + } else { + return this.constructor( context ).find( selector ); + } + + // HANDLE: $(DOMElement) + } else if ( selector.nodeType ) { + this[ 0 ] = selector; + this.length = 1; + return this; + + // HANDLE: $(function) + // Shortcut for document ready + } else if ( isFunction( selector ) ) { + return root.ready !== undefined ? + root.ready( selector ) : + + // Execute immediately if ready is not present + selector( jQuery ); + } + + return jQuery.makeArray( selector, this ); + }; + +// Give the init function the jQuery prototype for later instantiation +init.prototype = jQuery.fn; + +// Initialize central reference +rootjQuery = jQuery( document ); + + +var rparentsprev = /^(?:parents|prev(?:Until|All))/, + + // Methods guaranteed to produce a unique set when starting from a unique set + guaranteedUnique = { + children: true, + contents: true, + next: true, + prev: true + }; + +jQuery.fn.extend( { + has: function( target ) { + var targets = jQuery( target, this ), + l = targets.length; + + return this.filter( function() { + var i = 0; + for ( ; i < l; i++ ) { + if ( jQuery.contains( this, targets[ i ] ) ) { + return true; + } + } + } ); + }, + + closest: function( selectors, context ) { + var cur, + i = 0, + l = this.length, + matched = [], + targets = typeof selectors !== "string" && jQuery( selectors ); + + // Positional selectors never match, since there's no _selection_ context + if ( !rneedsContext.test( selectors ) ) { + for ( ; i < l; i++ ) { + for ( cur = this[ i ]; cur && cur !== context; cur = cur.parentNode ) { + + // Always skip document fragments + if ( cur.nodeType < 11 && ( targets ? + targets.index( cur ) > -1 : + + // Don't pass non-elements to Sizzle + cur.nodeType === 1 && + jQuery.find.matchesSelector( cur, selectors ) ) ) { + + matched.push( cur ); + break; + } + } + } + } + + return this.pushStack( matched.length > 1 ? jQuery.uniqueSort( matched ) : matched ); + }, + + // Determine the position of an element within the set + index: function( elem ) { + + // No argument, return index in parent + if ( !elem ) { + return ( this[ 0 ] && this[ 0 ].parentNode ) ? this.first().prevAll().length : -1; + } + + // Index in selector + if ( typeof elem === "string" ) { + return indexOf.call( jQuery( elem ), this[ 0 ] ); + } + + // Locate the position of the desired element + return indexOf.call( this, + + // If it receives a jQuery object, the first element is used + elem.jquery ? elem[ 0 ] : elem + ); + }, + + add: function( selector, context ) { + return this.pushStack( + jQuery.uniqueSort( + jQuery.merge( this.get(), jQuery( selector, context ) ) + ) + ); + }, + + addBack: function( selector ) { + return this.add( selector == null ? + this.prevObject : this.prevObject.filter( selector ) + ); + } +} ); + +function sibling( cur, dir ) { + while ( ( cur = cur[ dir ] ) && cur.nodeType !== 1 ) {} + return cur; +} + +jQuery.each( { + parent: function( elem ) { + var parent = elem.parentNode; + return parent && parent.nodeType !== 11 ? parent : null; + }, + parents: function( elem ) { + return dir( elem, "parentNode" ); + }, + parentsUntil: function( elem, i, until ) { + return dir( elem, "parentNode", until ); + }, + next: function( elem ) { + return sibling( elem, "nextSibling" ); + }, + prev: function( elem ) { + return sibling( elem, "previousSibling" ); + }, + nextAll: function( elem ) { + return dir( elem, "nextSibling" ); + }, + prevAll: function( elem ) { + return dir( elem, "previousSibling" ); + }, + nextUntil: function( elem, i, until ) { + return dir( elem, "nextSibling", until ); + }, + prevUntil: function( elem, i, until ) { + return dir( elem, "previousSibling", until ); + }, + siblings: function( elem ) { + return siblings( ( elem.parentNode || {} ).firstChild, elem ); + }, + children: function( elem ) { + return siblings( elem.firstChild ); + }, + contents: function( elem ) { + if ( typeof elem.contentDocument !== "undefined" ) { + return elem.contentDocument; + } + + // Support: IE 9 - 11 only, iOS 7 only, Android Browser <=4.3 only + // Treat the template element as a regular one in browsers that + // don't support it. + if ( nodeName( elem, "template" ) ) { + elem = elem.content || elem; + } + + return jQuery.merge( [], elem.childNodes ); + } +}, function( name, fn ) { + jQuery.fn[ name ] = function( until, selector ) { + var matched = jQuery.map( this, fn, until ); + + if ( name.slice( -5 ) !== "Until" ) { + selector = until; + } + + if ( selector && typeof selector === "string" ) { + matched = jQuery.filter( selector, matched ); + } + + if ( this.length > 1 ) { + + // Remove duplicates + if ( !guaranteedUnique[ name ] ) { + jQuery.uniqueSort( matched ); + } + + // Reverse order for parents* and prev-derivatives + if ( rparentsprev.test( name ) ) { + matched.reverse(); + } + } + + return this.pushStack( matched ); + }; +} ); +var rnothtmlwhite = ( /[^\x20\t\r\n\f]+/g ); + + + +// Convert String-formatted options into Object-formatted ones +function createOptions( options ) { + var object = {}; + jQuery.each( options.match( rnothtmlwhite ) || [], function( _, flag ) { + object[ flag ] = true; + } ); + return object; +} + +/* + * Create a callback list using the following parameters: + * + * options: an optional list of space-separated options that will change how + * the callback list behaves or a more traditional option object + * + * By default a callback list will act like an event callback list and can be + * "fired" multiple times. + * + * Possible options: + * + * once: will ensure the callback list can only be fired once (like a Deferred) + * + * memory: will keep track of previous values and will call any callback added + * after the list has been fired right away with the latest "memorized" + * values (like a Deferred) + * + * unique: will ensure a callback can only be added once (no duplicate in the list) + * + * stopOnFalse: interrupt callings when a callback returns false + * + */ +jQuery.Callbacks = function( options ) { + + // Convert options from String-formatted to Object-formatted if needed + // (we check in cache first) + options = typeof options === "string" ? + createOptions( options ) : + jQuery.extend( {}, options ); + + var // Flag to know if list is currently firing + firing, + + // Last fire value for non-forgettable lists + memory, + + // Flag to know if list was already fired + fired, + + // Flag to prevent firing + locked, + + // Actual callback list + list = [], + + // Queue of execution data for repeatable lists + queue = [], + + // Index of currently firing callback (modified by add/remove as needed) + firingIndex = -1, + + // Fire callbacks + fire = function() { + + // Enforce single-firing + locked = locked || options.once; + + // Execute callbacks for all pending executions, + // respecting firingIndex overrides and runtime changes + fired = firing = true; + for ( ; queue.length; firingIndex = -1 ) { + memory = queue.shift(); + while ( ++firingIndex < list.length ) { + + // Run callback and check for early termination + if ( list[ firingIndex ].apply( memory[ 0 ], memory[ 1 ] ) === false && + options.stopOnFalse ) { + + // Jump to end and forget the data so .add doesn't re-fire + firingIndex = list.length; + memory = false; + } + } + } + + // Forget the data if we're done with it + if ( !options.memory ) { + memory = false; + } + + firing = false; + + // Clean up if we're done firing for good + if ( locked ) { + + // Keep an empty list if we have data for future add calls + if ( memory ) { + list = []; + + // Otherwise, this object is spent + } else { + list = ""; + } + } + }, + + // Actual Callbacks object + self = { + + // Add a callback or a collection of callbacks to the list + add: function() { + if ( list ) { + + // If we have memory from a past run, we should fire after adding + if ( memory && !firing ) { + firingIndex = list.length - 1; + queue.push( memory ); + } + + ( function add( args ) { + jQuery.each( args, function( _, arg ) { + if ( isFunction( arg ) ) { + if ( !options.unique || !self.has( arg ) ) { + list.push( arg ); + } + } else if ( arg && arg.length && toType( arg ) !== "string" ) { + + // Inspect recursively + add( arg ); + } + } ); + } )( arguments ); + + if ( memory && !firing ) { + fire(); + } + } + return this; + }, + + // Remove a callback from the list + remove: function() { + jQuery.each( arguments, function( _, arg ) { + var index; + while ( ( index = jQuery.inArray( arg, list, index ) ) > -1 ) { + list.splice( index, 1 ); + + // Handle firing indexes + if ( index <= firingIndex ) { + firingIndex--; + } + } + } ); + return this; + }, + + // Check if a given callback is in the list. + // If no argument is given, return whether or not list has callbacks attached. + has: function( fn ) { + return fn ? + jQuery.inArray( fn, list ) > -1 : + list.length > 0; + }, + + // Remove all callbacks from the list + empty: function() { + if ( list ) { + list = []; + } + return this; + }, + + // Disable .fire and .add + // Abort any current/pending executions + // Clear all callbacks and values + disable: function() { + locked = queue = []; + list = memory = ""; + return this; + }, + disabled: function() { + return !list; + }, + + // Disable .fire + // Also disable .add unless we have memory (since it would have no effect) + // Abort any pending executions + lock: function() { + locked = queue = []; + if ( !memory && !firing ) { + list = memory = ""; + } + return this; + }, + locked: function() { + return !!locked; + }, + + // Call all callbacks with the given context and arguments + fireWith: function( context, args ) { + if ( !locked ) { + args = args || []; + args = [ context, args.slice ? args.slice() : args ]; + queue.push( args ); + if ( !firing ) { + fire(); + } + } + return this; + }, + + // Call all the callbacks with the given arguments + fire: function() { + self.fireWith( this, arguments ); + return this; + }, + + // To know if the callbacks have already been called at least once + fired: function() { + return !!fired; + } + }; + + return self; +}; + + +function Identity( v ) { + return v; +} +function Thrower( ex ) { + throw ex; +} + +function adoptValue( value, resolve, reject, noValue ) { + var method; + + try { + + // Check for promise aspect first to privilege synchronous behavior + if ( value && isFunction( ( method = value.promise ) ) ) { + method.call( value ).done( resolve ).fail( reject ); + + // Other thenables + } else if ( value && isFunction( ( method = value.then ) ) ) { + method.call( value, resolve, reject ); + + // Other non-thenables + } else { + + // Control `resolve` arguments by letting Array#slice cast boolean `noValue` to integer: + // * false: [ value ].slice( 0 ) => resolve( value ) + // * true: [ value ].slice( 1 ) => resolve() + resolve.apply( undefined, [ value ].slice( noValue ) ); + } + + // For Promises/A+, convert exceptions into rejections + // Since jQuery.when doesn't unwrap thenables, we can skip the extra checks appearing in + // Deferred#then to conditionally suppress rejection. + } catch ( value ) { + + // Support: Android 4.0 only + // Strict mode functions invoked without .call/.apply get global-object context + reject.apply( undefined, [ value ] ); + } +} + +jQuery.extend( { + + Deferred: function( func ) { + var tuples = [ + + // action, add listener, callbacks, + // ... .then handlers, argument index, [final state] + [ "notify", "progress", jQuery.Callbacks( "memory" ), + jQuery.Callbacks( "memory" ), 2 ], + [ "resolve", "done", jQuery.Callbacks( "once memory" ), + jQuery.Callbacks( "once memory" ), 0, "resolved" ], + [ "reject", "fail", jQuery.Callbacks( "once memory" ), + jQuery.Callbacks( "once memory" ), 1, "rejected" ] + ], + state = "pending", + promise = { + state: function() { + return state; + }, + always: function() { + deferred.done( arguments ).fail( arguments ); + return this; + }, + "catch": function( fn ) { + return promise.then( null, fn ); + }, + + // Keep pipe for back-compat + pipe: function( /* fnDone, fnFail, fnProgress */ ) { + var fns = arguments; + + return jQuery.Deferred( function( newDefer ) { + jQuery.each( tuples, function( i, tuple ) { + + // Map tuples (progress, done, fail) to arguments (done, fail, progress) + var fn = isFunction( fns[ tuple[ 4 ] ] ) && fns[ tuple[ 4 ] ]; + + // deferred.progress(function() { bind to newDefer or newDefer.notify }) + // deferred.done(function() { bind to newDefer or newDefer.resolve }) + // deferred.fail(function() { bind to newDefer or newDefer.reject }) + deferred[ tuple[ 1 ] ]( function() { + var returned = fn && fn.apply( this, arguments ); + if ( returned && isFunction( returned.promise ) ) { + returned.promise() + .progress( newDefer.notify ) + .done( newDefer.resolve ) + .fail( newDefer.reject ); + } else { + newDefer[ tuple[ 0 ] + "With" ]( + this, + fn ? [ returned ] : arguments + ); + } + } ); + } ); + fns = null; + } ).promise(); + }, + then: function( onFulfilled, onRejected, onProgress ) { + var maxDepth = 0; + function resolve( depth, deferred, handler, special ) { + return function() { + var that = this, + args = arguments, + mightThrow = function() { + var returned, then; + + // Support: Promises/A+ section 2.3.3.3.3 + // https://promisesaplus.com/#point-59 + // Ignore double-resolution attempts + if ( depth < maxDepth ) { + return; + } + + returned = handler.apply( that, args ); + + // Support: Promises/A+ section 2.3.1 + // https://promisesaplus.com/#point-48 + if ( returned === deferred.promise() ) { + throw new TypeError( "Thenable self-resolution" ); + } + + // Support: Promises/A+ sections 2.3.3.1, 3.5 + // https://promisesaplus.com/#point-54 + // https://promisesaplus.com/#point-75 + // Retrieve `then` only once + then = returned && + + // Support: Promises/A+ section 2.3.4 + // https://promisesaplus.com/#point-64 + // Only check objects and functions for thenability + ( typeof returned === "object" || + typeof returned === "function" ) && + returned.then; + + // Handle a returned thenable + if ( isFunction( then ) ) { + + // Special processors (notify) just wait for resolution + if ( special ) { + then.call( + returned, + resolve( maxDepth, deferred, Identity, special ), + resolve( maxDepth, deferred, Thrower, special ) + ); + + // Normal processors (resolve) also hook into progress + } else { + + // ...and disregard older resolution values + maxDepth++; + + then.call( + returned, + resolve( maxDepth, deferred, Identity, special ), + resolve( maxDepth, deferred, Thrower, special ), + resolve( maxDepth, deferred, Identity, + deferred.notifyWith ) + ); + } + + // Handle all other returned values + } else { + + // Only substitute handlers pass on context + // and multiple values (non-spec behavior) + if ( handler !== Identity ) { + that = undefined; + args = [ returned ]; + } + + // Process the value(s) + // Default process is resolve + ( special || deferred.resolveWith )( that, args ); + } + }, + + // Only normal processors (resolve) catch and reject exceptions + process = special ? + mightThrow : + function() { + try { + mightThrow(); + } catch ( e ) { + + if ( jQuery.Deferred.exceptionHook ) { + jQuery.Deferred.exceptionHook( e, + process.stackTrace ); + } + + // Support: Promises/A+ section 2.3.3.3.4.1 + // https://promisesaplus.com/#point-61 + // Ignore post-resolution exceptions + if ( depth + 1 >= maxDepth ) { + + // Only substitute handlers pass on context + // and multiple values (non-spec behavior) + if ( handler !== Thrower ) { + that = undefined; + args = [ e ]; + } + + deferred.rejectWith( that, args ); + } + } + }; + + // Support: Promises/A+ section 2.3.3.3.1 + // https://promisesaplus.com/#point-57 + // Re-resolve promises immediately to dodge false rejection from + // subsequent errors + if ( depth ) { + process(); + } else { + + // Call an optional hook to record the stack, in case of exception + // since it's otherwise lost when execution goes async + if ( jQuery.Deferred.getStackHook ) { + process.stackTrace = jQuery.Deferred.getStackHook(); + } + window.setTimeout( process ); + } + }; + } + + return jQuery.Deferred( function( newDefer ) { + + // progress_handlers.add( ... ) + tuples[ 0 ][ 3 ].add( + resolve( + 0, + newDefer, + isFunction( onProgress ) ? + onProgress : + Identity, + newDefer.notifyWith + ) + ); + + // fulfilled_handlers.add( ... ) + tuples[ 1 ][ 3 ].add( + resolve( + 0, + newDefer, + isFunction( onFulfilled ) ? + onFulfilled : + Identity + ) + ); + + // rejected_handlers.add( ... ) + tuples[ 2 ][ 3 ].add( + resolve( + 0, + newDefer, + isFunction( onRejected ) ? + onRejected : + Thrower + ) + ); + } ).promise(); + }, + + // Get a promise for this deferred + // If obj is provided, the promise aspect is added to the object + promise: function( obj ) { + return obj != null ? jQuery.extend( obj, promise ) : promise; + } + }, + deferred = {}; + + // Add list-specific methods + jQuery.each( tuples, function( i, tuple ) { + var list = tuple[ 2 ], + stateString = tuple[ 5 ]; + + // promise.progress = list.add + // promise.done = list.add + // promise.fail = list.add + promise[ tuple[ 1 ] ] = list.add; + + // Handle state + if ( stateString ) { + list.add( + function() { + + // state = "resolved" (i.e., fulfilled) + // state = "rejected" + state = stateString; + }, + + // rejected_callbacks.disable + // fulfilled_callbacks.disable + tuples[ 3 - i ][ 2 ].disable, + + // rejected_handlers.disable + // fulfilled_handlers.disable + tuples[ 3 - i ][ 3 ].disable, + + // progress_callbacks.lock + tuples[ 0 ][ 2 ].lock, + + // progress_handlers.lock + tuples[ 0 ][ 3 ].lock + ); + } + + // progress_handlers.fire + // fulfilled_handlers.fire + // rejected_handlers.fire + list.add( tuple[ 3 ].fire ); + + // deferred.notify = function() { deferred.notifyWith(...) } + // deferred.resolve = function() { deferred.resolveWith(...) } + // deferred.reject = function() { deferred.rejectWith(...) } + deferred[ tuple[ 0 ] ] = function() { + deferred[ tuple[ 0 ] + "With" ]( this === deferred ? undefined : this, arguments ); + return this; + }; + + // deferred.notifyWith = list.fireWith + // deferred.resolveWith = list.fireWith + // deferred.rejectWith = list.fireWith + deferred[ tuple[ 0 ] + "With" ] = list.fireWith; + } ); + + // Make the deferred a promise + promise.promise( deferred ); + + // Call given func if any + if ( func ) { + func.call( deferred, deferred ); + } + + // All done! + return deferred; + }, + + // Deferred helper + when: function( singleValue ) { + var + + // count of uncompleted subordinates + remaining = arguments.length, + + // count of unprocessed arguments + i = remaining, + + // subordinate fulfillment data + resolveContexts = Array( i ), + resolveValues = slice.call( arguments ), + + // the master Deferred + master = jQuery.Deferred(), + + // subordinate callback factory + updateFunc = function( i ) { + return function( value ) { + resolveContexts[ i ] = this; + resolveValues[ i ] = arguments.length > 1 ? slice.call( arguments ) : value; + if ( !( --remaining ) ) { + master.resolveWith( resolveContexts, resolveValues ); + } + }; + }; + + // Single- and empty arguments are adopted like Promise.resolve + if ( remaining <= 1 ) { + adoptValue( singleValue, master.done( updateFunc( i ) ).resolve, master.reject, + !remaining ); + + // Use .then() to unwrap secondary thenables (cf. gh-3000) + if ( master.state() === "pending" || + isFunction( resolveValues[ i ] && resolveValues[ i ].then ) ) { + + return master.then(); + } + } + + // Multiple arguments are aggregated like Promise.all array elements + while ( i-- ) { + adoptValue( resolveValues[ i ], updateFunc( i ), master.reject ); + } + + return master.promise(); + } +} ); + + +// These usually indicate a programmer mistake during development, +// warn about them ASAP rather than swallowing them by default. +var rerrorNames = /^(Eval|Internal|Range|Reference|Syntax|Type|URI)Error$/; + +jQuery.Deferred.exceptionHook = function( error, stack ) { + + // Support: IE 8 - 9 only + // Console exists when dev tools are open, which can happen at any time + if ( window.console && window.console.warn && error && rerrorNames.test( error.name ) ) { + window.console.warn( "jQuery.Deferred exception: " + error.message, error.stack, stack ); + } +}; + + + + +jQuery.readyException = function( error ) { + window.setTimeout( function() { + throw error; + } ); +}; + + + + +// The deferred used on DOM ready +var readyList = jQuery.Deferred(); + +jQuery.fn.ready = function( fn ) { + + readyList + .then( fn ) + + // Wrap jQuery.readyException in a function so that the lookup + // happens at the time of error handling instead of callback + // registration. + .catch( function( error ) { + jQuery.readyException( error ); + } ); + + return this; +}; + +jQuery.extend( { + + // Is the DOM ready to be used? Set to true once it occurs. + isReady: false, + + // A counter to track how many items to wait for before + // the ready event fires. See #6781 + readyWait: 1, + + // Handle when the DOM is ready + ready: function( wait ) { + + // Abort if there are pending holds or we're already ready + if ( wait === true ? --jQuery.readyWait : jQuery.isReady ) { + return; + } + + // Remember that the DOM is ready + jQuery.isReady = true; + + // If a normal DOM Ready event fired, decrement, and wait if need be + if ( wait !== true && --jQuery.readyWait > 0 ) { + return; + } + + // If there are functions bound, to execute + readyList.resolveWith( document, [ jQuery ] ); + } +} ); + +jQuery.ready.then = readyList.then; + +// The ready event handler and self cleanup method +function completed() { + document.removeEventListener( "DOMContentLoaded", completed ); + window.removeEventListener( "load", completed ); + jQuery.ready(); +} + +// Catch cases where $(document).ready() is called +// after the browser event has already occurred. +// Support: IE <=9 - 10 only +// Older IE sometimes signals "interactive" too soon +if ( document.readyState === "complete" || + ( document.readyState !== "loading" && !document.documentElement.doScroll ) ) { + + // Handle it asynchronously to allow scripts the opportunity to delay ready + window.setTimeout( jQuery.ready ); + +} else { + + // Use the handy event callback + document.addEventListener( "DOMContentLoaded", completed ); + + // A fallback to window.onload, that will always work + window.addEventListener( "load", completed ); +} + + + + +// Multifunctional method to get and set values of a collection +// The value/s can optionally be executed if it's a function +var access = function( elems, fn, key, value, chainable, emptyGet, raw ) { + var i = 0, + len = elems.length, + bulk = key == null; + + // Sets many values + if ( toType( key ) === "object" ) { + chainable = true; + for ( i in key ) { + access( elems, fn, i, key[ i ], true, emptyGet, raw ); + } + + // Sets one value + } else if ( value !== undefined ) { + chainable = true; + + if ( !isFunction( value ) ) { + raw = true; + } + + if ( bulk ) { + + // Bulk operations run against the entire set + if ( raw ) { + fn.call( elems, value ); + fn = null; + + // ...except when executing function values + } else { + bulk = fn; + fn = function( elem, key, value ) { + return bulk.call( jQuery( elem ), value ); + }; + } + } + + if ( fn ) { + for ( ; i < len; i++ ) { + fn( + elems[ i ], key, raw ? + value : + value.call( elems[ i ], i, fn( elems[ i ], key ) ) + ); + } + } + } + + if ( chainable ) { + return elems; + } + + // Gets + if ( bulk ) { + return fn.call( elems ); + } + + return len ? fn( elems[ 0 ], key ) : emptyGet; +}; + + +// Matches dashed string for camelizing +var rmsPrefix = /^-ms-/, + rdashAlpha = /-([a-z])/g; + +// Used by camelCase as callback to replace() +function fcamelCase( all, letter ) { + return letter.toUpperCase(); +} + +// Convert dashed to camelCase; used by the css and data modules +// Support: IE <=9 - 11, Edge 12 - 15 +// Microsoft forgot to hump their vendor prefix (#9572) +function camelCase( string ) { + return string.replace( rmsPrefix, "ms-" ).replace( rdashAlpha, fcamelCase ); +} +var acceptData = function( owner ) { + + // Accepts only: + // - Node + // - Node.ELEMENT_NODE + // - Node.DOCUMENT_NODE + // - Object + // - Any + return owner.nodeType === 1 || owner.nodeType === 9 || !( +owner.nodeType ); +}; + + + + +function Data() { + this.expando = jQuery.expando + Data.uid++; +} + +Data.uid = 1; + +Data.prototype = { + + cache: function( owner ) { + + // Check if the owner object already has a cache + var value = owner[ this.expando ]; + + // If not, create one + if ( !value ) { + value = {}; + + // We can accept data for non-element nodes in modern browsers, + // but we should not, see #8335. + // Always return an empty object. + if ( acceptData( owner ) ) { + + // If it is a node unlikely to be stringify-ed or looped over + // use plain assignment + if ( owner.nodeType ) { + owner[ this.expando ] = value; + + // Otherwise secure it in a non-enumerable property + // configurable must be true to allow the property to be + // deleted when data is removed + } else { + Object.defineProperty( owner, this.expando, { + value: value, + configurable: true + } ); + } + } + } + + return value; + }, + set: function( owner, data, value ) { + var prop, + cache = this.cache( owner ); + + // Handle: [ owner, key, value ] args + // Always use camelCase key (gh-2257) + if ( typeof data === "string" ) { + cache[ camelCase( data ) ] = value; + + // Handle: [ owner, { properties } ] args + } else { + + // Copy the properties one-by-one to the cache object + for ( prop in data ) { + cache[ camelCase( prop ) ] = data[ prop ]; + } + } + return cache; + }, + get: function( owner, key ) { + return key === undefined ? + this.cache( owner ) : + + // Always use camelCase key (gh-2257) + owner[ this.expando ] && owner[ this.expando ][ camelCase( key ) ]; + }, + access: function( owner, key, value ) { + + // In cases where either: + // + // 1. No key was specified + // 2. A string key was specified, but no value provided + // + // Take the "read" path and allow the get method to determine + // which value to return, respectively either: + // + // 1. The entire cache object + // 2. The data stored at the key + // + if ( key === undefined || + ( ( key && typeof key === "string" ) && value === undefined ) ) { + + return this.get( owner, key ); + } + + // When the key is not a string, or both a key and value + // are specified, set or extend (existing objects) with either: + // + // 1. An object of properties + // 2. A key and value + // + this.set( owner, key, value ); + + // Since the "set" path can have two possible entry points + // return the expected data based on which path was taken[*] + return value !== undefined ? value : key; + }, + remove: function( owner, key ) { + var i, + cache = owner[ this.expando ]; + + if ( cache === undefined ) { + return; + } + + if ( key !== undefined ) { + + // Support array or space separated string of keys + if ( Array.isArray( key ) ) { + + // If key is an array of keys... + // We always set camelCase keys, so remove that. + key = key.map( camelCase ); + } else { + key = camelCase( key ); + + // If a key with the spaces exists, use it. + // Otherwise, create an array by matching non-whitespace + key = key in cache ? + [ key ] : + ( key.match( rnothtmlwhite ) || [] ); + } + + i = key.length; + + while ( i-- ) { + delete cache[ key[ i ] ]; + } + } + + // Remove the expando if there's no more data + if ( key === undefined || jQuery.isEmptyObject( cache ) ) { + + // Support: Chrome <=35 - 45 + // Webkit & Blink performance suffers when deleting properties + // from DOM nodes, so set to undefined instead + // https://bugs.chromium.org/p/chromium/issues/detail?id=378607 (bug restricted) + if ( owner.nodeType ) { + owner[ this.expando ] = undefined; + } else { + delete owner[ this.expando ]; + } + } + }, + hasData: function( owner ) { + var cache = owner[ this.expando ]; + return cache !== undefined && !jQuery.isEmptyObject( cache ); + } +}; +var dataPriv = new Data(); + +var dataUser = new Data(); + + + +// Implementation Summary +// +// 1. Enforce API surface and semantic compatibility with 1.9.x branch +// 2. Improve the module's maintainability by reducing the storage +// paths to a single mechanism. +// 3. Use the same single mechanism to support "private" and "user" data. +// 4. _Never_ expose "private" data to user code (TODO: Drop _data, _removeData) +// 5. Avoid exposing implementation details on user objects (eg. expando properties) +// 6. Provide a clear path for implementation upgrade to WeakMap in 2014 + +var rbrace = /^(?:\{[\w\W]*\}|\[[\w\W]*\])$/, + rmultiDash = /[A-Z]/g; + +function getData( data ) { + if ( data === "true" ) { + return true; + } + + if ( data === "false" ) { + return false; + } + + if ( data === "null" ) { + return null; + } + + // Only convert to a number if it doesn't change the string + if ( data === +data + "" ) { + return +data; + } + + if ( rbrace.test( data ) ) { + return JSON.parse( data ); + } + + return data; +} + +function dataAttr( elem, key, data ) { + var name; + + // If nothing was found internally, try to fetch any + // data from the HTML5 data-* attribute + if ( data === undefined && elem.nodeType === 1 ) { + name = "data-" + key.replace( rmultiDash, "-$&" ).toLowerCase(); + data = elem.getAttribute( name ); + + if ( typeof data === "string" ) { + try { + data = getData( data ); + } catch ( e ) {} + + // Make sure we set the data so it isn't changed later + dataUser.set( elem, key, data ); + } else { + data = undefined; + } + } + return data; +} + +jQuery.extend( { + hasData: function( elem ) { + return dataUser.hasData( elem ) || dataPriv.hasData( elem ); + }, + + data: function( elem, name, data ) { + return dataUser.access( elem, name, data ); + }, + + removeData: function( elem, name ) { + dataUser.remove( elem, name ); + }, + + // TODO: Now that all calls to _data and _removeData have been replaced + // with direct calls to dataPriv methods, these can be deprecated. + _data: function( elem, name, data ) { + return dataPriv.access( elem, name, data ); + }, + + _removeData: function( elem, name ) { + dataPriv.remove( elem, name ); + } +} ); + +jQuery.fn.extend( { + data: function( key, value ) { + var i, name, data, + elem = this[ 0 ], + attrs = elem && elem.attributes; + + // Gets all values + if ( key === undefined ) { + if ( this.length ) { + data = dataUser.get( elem ); + + if ( elem.nodeType === 1 && !dataPriv.get( elem, "hasDataAttrs" ) ) { + i = attrs.length; + while ( i-- ) { + + // Support: IE 11 only + // The attrs elements can be null (#14894) + if ( attrs[ i ] ) { + name = attrs[ i ].name; + if ( name.indexOf( "data-" ) === 0 ) { + name = camelCase( name.slice( 5 ) ); + dataAttr( elem, name, data[ name ] ); + } + } + } + dataPriv.set( elem, "hasDataAttrs", true ); + } + } + + return data; + } + + // Sets multiple values + if ( typeof key === "object" ) { + return this.each( function() { + dataUser.set( this, key ); + } ); + } + + return access( this, function( value ) { + var data; + + // The calling jQuery object (element matches) is not empty + // (and therefore has an element appears at this[ 0 ]) and the + // `value` parameter was not undefined. An empty jQuery object + // will result in `undefined` for elem = this[ 0 ] which will + // throw an exception if an attempt to read a data cache is made. + if ( elem && value === undefined ) { + + // Attempt to get data from the cache + // The key will always be camelCased in Data + data = dataUser.get( elem, key ); + if ( data !== undefined ) { + return data; + } + + // Attempt to "discover" the data in + // HTML5 custom data-* attrs + data = dataAttr( elem, key ); + if ( data !== undefined ) { + return data; + } + + // We tried really hard, but the data doesn't exist. + return; + } + + // Set the data... + this.each( function() { + + // We always store the camelCased key + dataUser.set( this, key, value ); + } ); + }, null, value, arguments.length > 1, null, true ); + }, + + removeData: function( key ) { + return this.each( function() { + dataUser.remove( this, key ); + } ); + } +} ); + + +jQuery.extend( { + queue: function( elem, type, data ) { + var queue; + + if ( elem ) { + type = ( type || "fx" ) + "queue"; + queue = dataPriv.get( elem, type ); + + // Speed up dequeue by getting out quickly if this is just a lookup + if ( data ) { + if ( !queue || Array.isArray( data ) ) { + queue = dataPriv.access( elem, type, jQuery.makeArray( data ) ); + } else { + queue.push( data ); + } + } + return queue || []; + } + }, + + dequeue: function( elem, type ) { + type = type || "fx"; + + var queue = jQuery.queue( elem, type ), + startLength = queue.length, + fn = queue.shift(), + hooks = jQuery._queueHooks( elem, type ), + next = function() { + jQuery.dequeue( elem, type ); + }; + + // If the fx queue is dequeued, always remove the progress sentinel + if ( fn === "inprogress" ) { + fn = queue.shift(); + startLength--; + } + + if ( fn ) { + + // Add a progress sentinel to prevent the fx queue from being + // automatically dequeued + if ( type === "fx" ) { + queue.unshift( "inprogress" ); + } + + // Clear up the last queue stop function + delete hooks.stop; + fn.call( elem, next, hooks ); + } + + if ( !startLength && hooks ) { + hooks.empty.fire(); + } + }, + + // Not public - generate a queueHooks object, or return the current one + _queueHooks: function( elem, type ) { + var key = type + "queueHooks"; + return dataPriv.get( elem, key ) || dataPriv.access( elem, key, { + empty: jQuery.Callbacks( "once memory" ).add( function() { + dataPriv.remove( elem, [ type + "queue", key ] ); + } ) + } ); + } +} ); + +jQuery.fn.extend( { + queue: function( type, data ) { + var setter = 2; + + if ( typeof type !== "string" ) { + data = type; + type = "fx"; + setter--; + } + + if ( arguments.length < setter ) { + return jQuery.queue( this[ 0 ], type ); + } + + return data === undefined ? + this : + this.each( function() { + var queue = jQuery.queue( this, type, data ); + + // Ensure a hooks for this queue + jQuery._queueHooks( this, type ); + + if ( type === "fx" && queue[ 0 ] !== "inprogress" ) { + jQuery.dequeue( this, type ); + } + } ); + }, + dequeue: function( type ) { + return this.each( function() { + jQuery.dequeue( this, type ); + } ); + }, + clearQueue: function( type ) { + return this.queue( type || "fx", [] ); + }, + + // Get a promise resolved when queues of a certain type + // are emptied (fx is the type by default) + promise: function( type, obj ) { + var tmp, + count = 1, + defer = jQuery.Deferred(), + elements = this, + i = this.length, + resolve = function() { + if ( !( --count ) ) { + defer.resolveWith( elements, [ elements ] ); + } + }; + + if ( typeof type !== "string" ) { + obj = type; + type = undefined; + } + type = type || "fx"; + + while ( i-- ) { + tmp = dataPriv.get( elements[ i ], type + "queueHooks" ); + if ( tmp && tmp.empty ) { + count++; + tmp.empty.add( resolve ); + } + } + resolve(); + return defer.promise( obj ); + } +} ); +var pnum = ( /[+-]?(?:\d*\.|)\d+(?:[eE][+-]?\d+|)/ ).source; + +var rcssNum = new RegExp( "^(?:([+-])=|)(" + pnum + ")([a-z%]*)$", "i" ); + + +var cssExpand = [ "Top", "Right", "Bottom", "Left" ]; + +var documentElement = document.documentElement; + + + + var isAttached = function( elem ) { + return jQuery.contains( elem.ownerDocument, elem ); + }, + composed = { composed: true }; + + // Support: IE 9 - 11+, Edge 12 - 18+, iOS 10.0 - 10.2 only + // Check attachment across shadow DOM boundaries when possible (gh-3504) + // Support: iOS 10.0-10.2 only + // Early iOS 10 versions support `attachShadow` but not `getRootNode`, + // leading to errors. We need to check for `getRootNode`. + if ( documentElement.getRootNode ) { + isAttached = function( elem ) { + return jQuery.contains( elem.ownerDocument, elem ) || + elem.getRootNode( composed ) === elem.ownerDocument; + }; + } +var isHiddenWithinTree = function( elem, el ) { + + // isHiddenWithinTree might be called from jQuery#filter function; + // in that case, element will be second argument + elem = el || elem; + + // Inline style trumps all + return elem.style.display === "none" || + elem.style.display === "" && + + // Otherwise, check computed style + // Support: Firefox <=43 - 45 + // Disconnected elements can have computed display: none, so first confirm that elem is + // in the document. + isAttached( elem ) && + + jQuery.css( elem, "display" ) === "none"; + }; + +var swap = function( elem, options, callback, args ) { + var ret, name, + old = {}; + + // Remember the old values, and insert the new ones + for ( name in options ) { + old[ name ] = elem.style[ name ]; + elem.style[ name ] = options[ name ]; + } + + ret = callback.apply( elem, args || [] ); + + // Revert the old values + for ( name in options ) { + elem.style[ name ] = old[ name ]; + } + + return ret; +}; + + + + +function adjustCSS( elem, prop, valueParts, tween ) { + var adjusted, scale, + maxIterations = 20, + currentValue = tween ? + function() { + return tween.cur(); + } : + function() { + return jQuery.css( elem, prop, "" ); + }, + initial = currentValue(), + unit = valueParts && valueParts[ 3 ] || ( jQuery.cssNumber[ prop ] ? "" : "px" ), + + // Starting value computation is required for potential unit mismatches + initialInUnit = elem.nodeType && + ( jQuery.cssNumber[ prop ] || unit !== "px" && +initial ) && + rcssNum.exec( jQuery.css( elem, prop ) ); + + if ( initialInUnit && initialInUnit[ 3 ] !== unit ) { + + // Support: Firefox <=54 + // Halve the iteration target value to prevent interference from CSS upper bounds (gh-2144) + initial = initial / 2; + + // Trust units reported by jQuery.css + unit = unit || initialInUnit[ 3 ]; + + // Iteratively approximate from a nonzero starting point + initialInUnit = +initial || 1; + + while ( maxIterations-- ) { + + // Evaluate and update our best guess (doubling guesses that zero out). + // Finish if the scale equals or crosses 1 (making the old*new product non-positive). + jQuery.style( elem, prop, initialInUnit + unit ); + if ( ( 1 - scale ) * ( 1 - ( scale = currentValue() / initial || 0.5 ) ) <= 0 ) { + maxIterations = 0; + } + initialInUnit = initialInUnit / scale; + + } + + initialInUnit = initialInUnit * 2; + jQuery.style( elem, prop, initialInUnit + unit ); + + // Make sure we update the tween properties later on + valueParts = valueParts || []; + } + + if ( valueParts ) { + initialInUnit = +initialInUnit || +initial || 0; + + // Apply relative offset (+=/-=) if specified + adjusted = valueParts[ 1 ] ? + initialInUnit + ( valueParts[ 1 ] + 1 ) * valueParts[ 2 ] : + +valueParts[ 2 ]; + if ( tween ) { + tween.unit = unit; + tween.start = initialInUnit; + tween.end = adjusted; + } + } + return adjusted; +} + + +var defaultDisplayMap = {}; + +function getDefaultDisplay( elem ) { + var temp, + doc = elem.ownerDocument, + nodeName = elem.nodeName, + display = defaultDisplayMap[ nodeName ]; + + if ( display ) { + return display; + } + + temp = doc.body.appendChild( doc.createElement( nodeName ) ); + display = jQuery.css( temp, "display" ); + + temp.parentNode.removeChild( temp ); + + if ( display === "none" ) { + display = "block"; + } + defaultDisplayMap[ nodeName ] = display; + + return display; +} + +function showHide( elements, show ) { + var display, elem, + values = [], + index = 0, + length = elements.length; + + // Determine new display value for elements that need to change + for ( ; index < length; index++ ) { + elem = elements[ index ]; + if ( !elem.style ) { + continue; + } + + display = elem.style.display; + if ( show ) { + + // Since we force visibility upon cascade-hidden elements, an immediate (and slow) + // check is required in this first loop unless we have a nonempty display value (either + // inline or about-to-be-restored) + if ( display === "none" ) { + values[ index ] = dataPriv.get( elem, "display" ) || null; + if ( !values[ index ] ) { + elem.style.display = ""; + } + } + if ( elem.style.display === "" && isHiddenWithinTree( elem ) ) { + values[ index ] = getDefaultDisplay( elem ); + } + } else { + if ( display !== "none" ) { + values[ index ] = "none"; + + // Remember what we're overwriting + dataPriv.set( elem, "display", display ); + } + } + } + + // Set the display of the elements in a second loop to avoid constant reflow + for ( index = 0; index < length; index++ ) { + if ( values[ index ] != null ) { + elements[ index ].style.display = values[ index ]; + } + } + + return elements; +} + +jQuery.fn.extend( { + show: function() { + return showHide( this, true ); + }, + hide: function() { + return showHide( this ); + }, + toggle: function( state ) { + if ( typeof state === "boolean" ) { + return state ? this.show() : this.hide(); + } + + return this.each( function() { + if ( isHiddenWithinTree( this ) ) { + jQuery( this ).show(); + } else { + jQuery( this ).hide(); + } + } ); + } +} ); +var rcheckableType = ( /^(?:checkbox|radio)$/i ); + +var rtagName = ( /<([a-z][^\/\0>\x20\t\r\n\f]*)/i ); + +var rscriptType = ( /^$|^module$|\/(?:java|ecma)script/i ); + + + +// We have to close these tags to support XHTML (#13200) +var wrapMap = { + + // Support: IE <=9 only + option: [ 1, "<select multiple='multiple'>", "</select>" ], + + // XHTML parsers do not magically insert elements in the + // same way that tag soup parsers do. So we cannot shorten + // this by omitting <tbody> or other required elements. + thead: [ 1, "<table>", "</table>" ], + col: [ 2, "<table><colgroup>", "</colgroup></table>" ], + tr: [ 2, "<table><tbody>", "</tbody></table>" ], + td: [ 3, "<table><tbody><tr>", "</tr></tbody></table>" ], + + _default: [ 0, "", "" ] +}; + +// Support: IE <=9 only +wrapMap.optgroup = wrapMap.option; + +wrapMap.tbody = wrapMap.tfoot = wrapMap.colgroup = wrapMap.caption = wrapMap.thead; +wrapMap.th = wrapMap.td; + + +function getAll( context, tag ) { + + // Support: IE <=9 - 11 only + // Use typeof to avoid zero-argument method invocation on host objects (#15151) + var ret; + + if ( typeof context.getElementsByTagName !== "undefined" ) { + ret = context.getElementsByTagName( tag || "*" ); + + } else if ( typeof context.querySelectorAll !== "undefined" ) { + ret = context.querySelectorAll( tag || "*" ); + + } else { + ret = []; + } + + if ( tag === undefined || tag && nodeName( context, tag ) ) { + return jQuery.merge( [ context ], ret ); + } + + return ret; +} + + +// Mark scripts as having already been evaluated +function setGlobalEval( elems, refElements ) { + var i = 0, + l = elems.length; + + for ( ; i < l; i++ ) { + dataPriv.set( + elems[ i ], + "globalEval", + !refElements || dataPriv.get( refElements[ i ], "globalEval" ) + ); + } +} + + +var rhtml = /<|&#?\w+;/; + +function buildFragment( elems, context, scripts, selection, ignored ) { + var elem, tmp, tag, wrap, attached, j, + fragment = context.createDocumentFragment(), + nodes = [], + i = 0, + l = elems.length; + + for ( ; i < l; i++ ) { + elem = elems[ i ]; + + if ( elem || elem === 0 ) { + + // Add nodes directly + if ( toType( elem ) === "object" ) { + + // Support: Android <=4.0 only, PhantomJS 1 only + // push.apply(_, arraylike) throws on ancient WebKit + jQuery.merge( nodes, elem.nodeType ? [ elem ] : elem ); + + // Convert non-html into a text node + } else if ( !rhtml.test( elem ) ) { + nodes.push( context.createTextNode( elem ) ); + + // Convert html into DOM nodes + } else { + tmp = tmp || fragment.appendChild( context.createElement( "div" ) ); + + // Deserialize a standard representation + tag = ( rtagName.exec( elem ) || [ "", "" ] )[ 1 ].toLowerCase(); + wrap = wrapMap[ tag ] || wrapMap._default; + tmp.innerHTML = wrap[ 1 ] + jQuery.htmlPrefilter( elem ) + wrap[ 2 ]; + + // Descend through wrappers to the right content + j = wrap[ 0 ]; + while ( j-- ) { + tmp = tmp.lastChild; + } + + // Support: Android <=4.0 only, PhantomJS 1 only + // push.apply(_, arraylike) throws on ancient WebKit + jQuery.merge( nodes, tmp.childNodes ); + + // Remember the top-level container + tmp = fragment.firstChild; + + // Ensure the created nodes are orphaned (#12392) + tmp.textContent = ""; + } + } + } + + // Remove wrapper from fragment + fragment.textContent = ""; + + i = 0; + while ( ( elem = nodes[ i++ ] ) ) { + + // Skip elements already in the context collection (trac-4087) + if ( selection && jQuery.inArray( elem, selection ) > -1 ) { + if ( ignored ) { + ignored.push( elem ); + } + continue; + } + + attached = isAttached( elem ); + + // Append to fragment + tmp = getAll( fragment.appendChild( elem ), "script" ); + + // Preserve script evaluation history + if ( attached ) { + setGlobalEval( tmp ); + } + + // Capture executables + if ( scripts ) { + j = 0; + while ( ( elem = tmp[ j++ ] ) ) { + if ( rscriptType.test( elem.type || "" ) ) { + scripts.push( elem ); + } + } + } + } + + return fragment; +} + + +( function() { + var fragment = document.createDocumentFragment(), + div = fragment.appendChild( document.createElement( "div" ) ), + input = document.createElement( "input" ); + + // Support: Android 4.0 - 4.3 only + // Check state lost if the name is set (#11217) + // Support: Windows Web Apps (WWA) + // `name` and `type` must use .setAttribute for WWA (#14901) + input.setAttribute( "type", "radio" ); + input.setAttribute( "checked", "checked" ); + input.setAttribute( "name", "t" ); + + div.appendChild( input ); + + // Support: Android <=4.1 only + // Older WebKit doesn't clone checked state correctly in fragments + support.checkClone = div.cloneNode( true ).cloneNode( true ).lastChild.checked; + + // Support: IE <=11 only + // Make sure textarea (and checkbox) defaultValue is properly cloned + div.innerHTML = "<textarea>x</textarea>"; + support.noCloneChecked = !!div.cloneNode( true ).lastChild.defaultValue; +} )(); + + +var + rkeyEvent = /^key/, + rmouseEvent = /^(?:mouse|pointer|contextmenu|drag|drop)|click/, + rtypenamespace = /^([^.]*)(?:\.(.+)|)/; + +function returnTrue() { + return true; +} + +function returnFalse() { + return false; +} + +// Support: IE <=9 - 11+ +// focus() and blur() are asynchronous, except when they are no-op. +// So expect focus to be synchronous when the element is already active, +// and blur to be synchronous when the element is not already active. +// (focus and blur are always synchronous in other supported browsers, +// this just defines when we can count on it). +function expectSync( elem, type ) { + return ( elem === safeActiveElement() ) === ( type === "focus" ); +} + +// Support: IE <=9 only +// Accessing document.activeElement can throw unexpectedly +// https://bugs.jquery.com/ticket/13393 +function safeActiveElement() { + try { + return document.activeElement; + } catch ( err ) { } +} + +function on( elem, types, selector, data, fn, one ) { + var origFn, type; + + // Types can be a map of types/handlers + if ( typeof types === "object" ) { + + // ( types-Object, selector, data ) + if ( typeof selector !== "string" ) { + + // ( types-Object, data ) + data = data || selector; + selector = undefined; + } + for ( type in types ) { + on( elem, type, selector, data, types[ type ], one ); + } + return elem; + } + + if ( data == null && fn == null ) { + + // ( types, fn ) + fn = selector; + data = selector = undefined; + } else if ( fn == null ) { + if ( typeof selector === "string" ) { + + // ( types, selector, fn ) + fn = data; + data = undefined; + } else { + + // ( types, data, fn ) + fn = data; + data = selector; + selector = undefined; + } + } + if ( fn === false ) { + fn = returnFalse; + } else if ( !fn ) { + return elem; + } + + if ( one === 1 ) { + origFn = fn; + fn = function( event ) { + + // Can use an empty set, since event contains the info + jQuery().off( event ); + return origFn.apply( this, arguments ); + }; + + // Use same guid so caller can remove using origFn + fn.guid = origFn.guid || ( origFn.guid = jQuery.guid++ ); + } + return elem.each( function() { + jQuery.event.add( this, types, fn, data, selector ); + } ); +} + +/* + * Helper functions for managing events -- not part of the public interface. + * Props to Dean Edwards' addEvent library for many of the ideas. + */ +jQuery.event = { + + global: {}, + + add: function( elem, types, handler, data, selector ) { + + var handleObjIn, eventHandle, tmp, + events, t, handleObj, + special, handlers, type, namespaces, origType, + elemData = dataPriv.get( elem ); + + // Don't attach events to noData or text/comment nodes (but allow plain objects) + if ( !elemData ) { + return; + } + + // Caller can pass in an object of custom data in lieu of the handler + if ( handler.handler ) { + handleObjIn = handler; + handler = handleObjIn.handler; + selector = handleObjIn.selector; + } + + // Ensure that invalid selectors throw exceptions at attach time + // Evaluate against documentElement in case elem is a non-element node (e.g., document) + if ( selector ) { + jQuery.find.matchesSelector( documentElement, selector ); + } + + // Make sure that the handler has a unique ID, used to find/remove it later + if ( !handler.guid ) { + handler.guid = jQuery.guid++; + } + + // Init the element's event structure and main handler, if this is the first + if ( !( events = elemData.events ) ) { + events = elemData.events = {}; + } + if ( !( eventHandle = elemData.handle ) ) { + eventHandle = elemData.handle = function( e ) { + + // Discard the second event of a jQuery.event.trigger() and + // when an event is called after a page has unloaded + return typeof jQuery !== "undefined" && jQuery.event.triggered !== e.type ? + jQuery.event.dispatch.apply( elem, arguments ) : undefined; + }; + } + + // Handle multiple events separated by a space + types = ( types || "" ).match( rnothtmlwhite ) || [ "" ]; + t = types.length; + while ( t-- ) { + tmp = rtypenamespace.exec( types[ t ] ) || []; + type = origType = tmp[ 1 ]; + namespaces = ( tmp[ 2 ] || "" ).split( "." ).sort(); + + // There *must* be a type, no attaching namespace-only handlers + if ( !type ) { + continue; + } + + // If event changes its type, use the special event handlers for the changed type + special = jQuery.event.special[ type ] || {}; + + // If selector defined, determine special event api type, otherwise given type + type = ( selector ? special.delegateType : special.bindType ) || type; + + // Update special based on newly reset type + special = jQuery.event.special[ type ] || {}; + + // handleObj is passed to all event handlers + handleObj = jQuery.extend( { + type: type, + origType: origType, + data: data, + handler: handler, + guid: handler.guid, + selector: selector, + needsContext: selector && jQuery.expr.match.needsContext.test( selector ), + namespace: namespaces.join( "." ) + }, handleObjIn ); + + // Init the event handler queue if we're the first + if ( !( handlers = events[ type ] ) ) { + handlers = events[ type ] = []; + handlers.delegateCount = 0; + + // Only use addEventListener if the special events handler returns false + if ( !special.setup || + special.setup.call( elem, data, namespaces, eventHandle ) === false ) { + + if ( elem.addEventListener ) { + elem.addEventListener( type, eventHandle ); + } + } + } + + if ( special.add ) { + special.add.call( elem, handleObj ); + + if ( !handleObj.handler.guid ) { + handleObj.handler.guid = handler.guid; + } + } + + // Add to the element's handler list, delegates in front + if ( selector ) { + handlers.splice( handlers.delegateCount++, 0, handleObj ); + } else { + handlers.push( handleObj ); + } + + // Keep track of which events have ever been used, for event optimization + jQuery.event.global[ type ] = true; + } + + }, + + // Detach an event or set of events from an element + remove: function( elem, types, handler, selector, mappedTypes ) { + + var j, origCount, tmp, + events, t, handleObj, + special, handlers, type, namespaces, origType, + elemData = dataPriv.hasData( elem ) && dataPriv.get( elem ); + + if ( !elemData || !( events = elemData.events ) ) { + return; + } + + // Once for each type.namespace in types; type may be omitted + types = ( types || "" ).match( rnothtmlwhite ) || [ "" ]; + t = types.length; + while ( t-- ) { + tmp = rtypenamespace.exec( types[ t ] ) || []; + type = origType = tmp[ 1 ]; + namespaces = ( tmp[ 2 ] || "" ).split( "." ).sort(); + + // Unbind all events (on this namespace, if provided) for the element + if ( !type ) { + for ( type in events ) { + jQuery.event.remove( elem, type + types[ t ], handler, selector, true ); + } + continue; + } + + special = jQuery.event.special[ type ] || {}; + type = ( selector ? special.delegateType : special.bindType ) || type; + handlers = events[ type ] || []; + tmp = tmp[ 2 ] && + new RegExp( "(^|\\.)" + namespaces.join( "\\.(?:.*\\.|)" ) + "(\\.|$)" ); + + // Remove matching events + origCount = j = handlers.length; + while ( j-- ) { + handleObj = handlers[ j ]; + + if ( ( mappedTypes || origType === handleObj.origType ) && + ( !handler || handler.guid === handleObj.guid ) && + ( !tmp || tmp.test( handleObj.namespace ) ) && + ( !selector || selector === handleObj.selector || + selector === "**" && handleObj.selector ) ) { + handlers.splice( j, 1 ); + + if ( handleObj.selector ) { + handlers.delegateCount--; + } + if ( special.remove ) { + special.remove.call( elem, handleObj ); + } + } + } + + // Remove generic event handler if we removed something and no more handlers exist + // (avoids potential for endless recursion during removal of special event handlers) + if ( origCount && !handlers.length ) { + if ( !special.teardown || + special.teardown.call( elem, namespaces, elemData.handle ) === false ) { + + jQuery.removeEvent( elem, type, elemData.handle ); + } + + delete events[ type ]; + } + } + + // Remove data and the expando if it's no longer used + if ( jQuery.isEmptyObject( events ) ) { + dataPriv.remove( elem, "handle events" ); + } + }, + + dispatch: function( nativeEvent ) { + + // Make a writable jQuery.Event from the native event object + var event = jQuery.event.fix( nativeEvent ); + + var i, j, ret, matched, handleObj, handlerQueue, + args = new Array( arguments.length ), + handlers = ( dataPriv.get( this, "events" ) || {} )[ event.type ] || [], + special = jQuery.event.special[ event.type ] || {}; + + // Use the fix-ed jQuery.Event rather than the (read-only) native event + args[ 0 ] = event; + + for ( i = 1; i < arguments.length; i++ ) { + args[ i ] = arguments[ i ]; + } + + event.delegateTarget = this; + + // Call the preDispatch hook for the mapped type, and let it bail if desired + if ( special.preDispatch && special.preDispatch.call( this, event ) === false ) { + return; + } + + // Determine handlers + handlerQueue = jQuery.event.handlers.call( this, event, handlers ); + + // Run delegates first; they may want to stop propagation beneath us + i = 0; + while ( ( matched = handlerQueue[ i++ ] ) && !event.isPropagationStopped() ) { + event.currentTarget = matched.elem; + + j = 0; + while ( ( handleObj = matched.handlers[ j++ ] ) && + !event.isImmediatePropagationStopped() ) { + + // If the event is namespaced, then each handler is only invoked if it is + // specially universal or its namespaces are a superset of the event's. + if ( !event.rnamespace || handleObj.namespace === false || + event.rnamespace.test( handleObj.namespace ) ) { + + event.handleObj = handleObj; + event.data = handleObj.data; + + ret = ( ( jQuery.event.special[ handleObj.origType ] || {} ).handle || + handleObj.handler ).apply( matched.elem, args ); + + if ( ret !== undefined ) { + if ( ( event.result = ret ) === false ) { + event.preventDefault(); + event.stopPropagation(); + } + } + } + } + } + + // Call the postDispatch hook for the mapped type + if ( special.postDispatch ) { + special.postDispatch.call( this, event ); + } + + return event.result; + }, + + handlers: function( event, handlers ) { + var i, handleObj, sel, matchedHandlers, matchedSelectors, + handlerQueue = [], + delegateCount = handlers.delegateCount, + cur = event.target; + + // Find delegate handlers + if ( delegateCount && + + // Support: IE <=9 + // Black-hole SVG <use> instance trees (trac-13180) + cur.nodeType && + + // Support: Firefox <=42 + // Suppress spec-violating clicks indicating a non-primary pointer button (trac-3861) + // https://www.w3.org/TR/DOM-Level-3-Events/#event-type-click + // Support: IE 11 only + // ...but not arrow key "clicks" of radio inputs, which can have `button` -1 (gh-2343) + !( event.type === "click" && event.button >= 1 ) ) { + + for ( ; cur !== this; cur = cur.parentNode || this ) { + + // Don't check non-elements (#13208) + // Don't process clicks on disabled elements (#6911, #8165, #11382, #11764) + if ( cur.nodeType === 1 && !( event.type === "click" && cur.disabled === true ) ) { + matchedHandlers = []; + matchedSelectors = {}; + for ( i = 0; i < delegateCount; i++ ) { + handleObj = handlers[ i ]; + + // Don't conflict with Object.prototype properties (#13203) + sel = handleObj.selector + " "; + + if ( matchedSelectors[ sel ] === undefined ) { + matchedSelectors[ sel ] = handleObj.needsContext ? + jQuery( sel, this ).index( cur ) > -1 : + jQuery.find( sel, this, null, [ cur ] ).length; + } + if ( matchedSelectors[ sel ] ) { + matchedHandlers.push( handleObj ); + } + } + if ( matchedHandlers.length ) { + handlerQueue.push( { elem: cur, handlers: matchedHandlers } ); + } + } + } + } + + // Add the remaining (directly-bound) handlers + cur = this; + if ( delegateCount < handlers.length ) { + handlerQueue.push( { elem: cur, handlers: handlers.slice( delegateCount ) } ); + } + + return handlerQueue; + }, + + addProp: function( name, hook ) { + Object.defineProperty( jQuery.Event.prototype, name, { + enumerable: true, + configurable: true, + + get: isFunction( hook ) ? + function() { + if ( this.originalEvent ) { + return hook( this.originalEvent ); + } + } : + function() { + if ( this.originalEvent ) { + return this.originalEvent[ name ]; + } + }, + + set: function( value ) { + Object.defineProperty( this, name, { + enumerable: true, + configurable: true, + writable: true, + value: value + } ); + } + } ); + }, + + fix: function( originalEvent ) { + return originalEvent[ jQuery.expando ] ? + originalEvent : + new jQuery.Event( originalEvent ); + }, + + special: { + load: { + + // Prevent triggered image.load events from bubbling to window.load + noBubble: true + }, + click: { + + // Utilize native event to ensure correct state for checkable inputs + setup: function( data ) { + + // For mutual compressibility with _default, replace `this` access with a local var. + // `|| data` is dead code meant only to preserve the variable through minification. + var el = this || data; + + // Claim the first handler + if ( rcheckableType.test( el.type ) && + el.click && nodeName( el, "input" ) ) { + + // dataPriv.set( el, "click", ... ) + leverageNative( el, "click", returnTrue ); + } + + // Return false to allow normal processing in the caller + return false; + }, + trigger: function( data ) { + + // For mutual compressibility with _default, replace `this` access with a local var. + // `|| data` is dead code meant only to preserve the variable through minification. + var el = this || data; + + // Force setup before triggering a click + if ( rcheckableType.test( el.type ) && + el.click && nodeName( el, "input" ) ) { + + leverageNative( el, "click" ); + } + + // Return non-false to allow normal event-path propagation + return true; + }, + + // For cross-browser consistency, suppress native .click() on links + // Also prevent it if we're currently inside a leveraged native-event stack + _default: function( event ) { + var target = event.target; + return rcheckableType.test( target.type ) && + target.click && nodeName( target, "input" ) && + dataPriv.get( target, "click" ) || + nodeName( target, "a" ); + } + }, + + beforeunload: { + postDispatch: function( event ) { + + // Support: Firefox 20+ + // Firefox doesn't alert if the returnValue field is not set. + if ( event.result !== undefined && event.originalEvent ) { + event.originalEvent.returnValue = event.result; + } + } + } + } +}; + +// Ensure the presence of an event listener that handles manually-triggered +// synthetic events by interrupting progress until reinvoked in response to +// *native* events that it fires directly, ensuring that state changes have +// already occurred before other listeners are invoked. +function leverageNative( el, type, expectSync ) { + + // Missing expectSync indicates a trigger call, which must force setup through jQuery.event.add + if ( !expectSync ) { + if ( dataPriv.get( el, type ) === undefined ) { + jQuery.event.add( el, type, returnTrue ); + } + return; + } + + // Register the controller as a special universal handler for all event namespaces + dataPriv.set( el, type, false ); + jQuery.event.add( el, type, { + namespace: false, + handler: function( event ) { + var notAsync, result, + saved = dataPriv.get( this, type ); + + if ( ( event.isTrigger & 1 ) && this[ type ] ) { + + // Interrupt processing of the outer synthetic .trigger()ed event + // Saved data should be false in such cases, but might be a leftover capture object + // from an async native handler (gh-4350) + if ( !saved.length ) { + + // Store arguments for use when handling the inner native event + // There will always be at least one argument (an event object), so this array + // will not be confused with a leftover capture object. + saved = slice.call( arguments ); + dataPriv.set( this, type, saved ); + + // Trigger the native event and capture its result + // Support: IE <=9 - 11+ + // focus() and blur() are asynchronous + notAsync = expectSync( this, type ); + this[ type ](); + result = dataPriv.get( this, type ); + if ( saved !== result || notAsync ) { + dataPriv.set( this, type, false ); + } else { + result = {}; + } + if ( saved !== result ) { + + // Cancel the outer synthetic event + event.stopImmediatePropagation(); + event.preventDefault(); + return result.value; + } + + // If this is an inner synthetic event for an event with a bubbling surrogate + // (focus or blur), assume that the surrogate already propagated from triggering the + // native event and prevent that from happening again here. + // This technically gets the ordering wrong w.r.t. to `.trigger()` (in which the + // bubbling surrogate propagates *after* the non-bubbling base), but that seems + // less bad than duplication. + } else if ( ( jQuery.event.special[ type ] || {} ).delegateType ) { + event.stopPropagation(); + } + + // If this is a native event triggered above, everything is now in order + // Fire an inner synthetic event with the original arguments + } else if ( saved.length ) { + + // ...and capture the result + dataPriv.set( this, type, { + value: jQuery.event.trigger( + + // Support: IE <=9 - 11+ + // Extend with the prototype to reset the above stopImmediatePropagation() + jQuery.extend( saved[ 0 ], jQuery.Event.prototype ), + saved.slice( 1 ), + this + ) + } ); + + // Abort handling of the native event + event.stopImmediatePropagation(); + } + } + } ); +} + +jQuery.removeEvent = function( elem, type, handle ) { + + // This "if" is needed for plain objects + if ( elem.removeEventListener ) { + elem.removeEventListener( type, handle ); + } +}; + +jQuery.Event = function( src, props ) { + + // Allow instantiation without the 'new' keyword + if ( !( this instanceof jQuery.Event ) ) { + return new jQuery.Event( src, props ); + } + + // Event object + if ( src && src.type ) { + this.originalEvent = src; + this.type = src.type; + + // Events bubbling up the document may have been marked as prevented + // by a handler lower down the tree; reflect the correct value. + this.isDefaultPrevented = src.defaultPrevented || + src.defaultPrevented === undefined && + + // Support: Android <=2.3 only + src.returnValue === false ? + returnTrue : + returnFalse; + + // Create target properties + // Support: Safari <=6 - 7 only + // Target should not be a text node (#504, #13143) + this.target = ( src.target && src.target.nodeType === 3 ) ? + src.target.parentNode : + src.target; + + this.currentTarget = src.currentTarget; + this.relatedTarget = src.relatedTarget; + + // Event type + } else { + this.type = src; + } + + // Put explicitly provided properties onto the event object + if ( props ) { + jQuery.extend( this, props ); + } + + // Create a timestamp if incoming event doesn't have one + this.timeStamp = src && src.timeStamp || Date.now(); + + // Mark it as fixed + this[ jQuery.expando ] = true; +}; + +// jQuery.Event is based on DOM3 Events as specified by the ECMAScript Language Binding +// https://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/ecma-script-binding.html +jQuery.Event.prototype = { + constructor: jQuery.Event, + isDefaultPrevented: returnFalse, + isPropagationStopped: returnFalse, + isImmediatePropagationStopped: returnFalse, + isSimulated: false, + + preventDefault: function() { + var e = this.originalEvent; + + this.isDefaultPrevented = returnTrue; + + if ( e && !this.isSimulated ) { + e.preventDefault(); + } + }, + stopPropagation: function() { + var e = this.originalEvent; + + this.isPropagationStopped = returnTrue; + + if ( e && !this.isSimulated ) { + e.stopPropagation(); + } + }, + stopImmediatePropagation: function() { + var e = this.originalEvent; + + this.isImmediatePropagationStopped = returnTrue; + + if ( e && !this.isSimulated ) { + e.stopImmediatePropagation(); + } + + this.stopPropagation(); + } +}; + +// Includes all common event props including KeyEvent and MouseEvent specific props +jQuery.each( { + altKey: true, + bubbles: true, + cancelable: true, + changedTouches: true, + ctrlKey: true, + detail: true, + eventPhase: true, + metaKey: true, + pageX: true, + pageY: true, + shiftKey: true, + view: true, + "char": true, + code: true, + charCode: true, + key: true, + keyCode: true, + button: true, + buttons: true, + clientX: true, + clientY: true, + offsetX: true, + offsetY: true, + pointerId: true, + pointerType: true, + screenX: true, + screenY: true, + targetTouches: true, + toElement: true, + touches: true, + + which: function( event ) { + var button = event.button; + + // Add which for key events + if ( event.which == null && rkeyEvent.test( event.type ) ) { + return event.charCode != null ? event.charCode : event.keyCode; + } + + // Add which for click: 1 === left; 2 === middle; 3 === right + if ( !event.which && button !== undefined && rmouseEvent.test( event.type ) ) { + if ( button & 1 ) { + return 1; + } + + if ( button & 2 ) { + return 3; + } + + if ( button & 4 ) { + return 2; + } + + return 0; + } + + return event.which; + } +}, jQuery.event.addProp ); + +jQuery.each( { focus: "focusin", blur: "focusout" }, function( type, delegateType ) { + jQuery.event.special[ type ] = { + + // Utilize native event if possible so blur/focus sequence is correct + setup: function() { + + // Claim the first handler + // dataPriv.set( this, "focus", ... ) + // dataPriv.set( this, "blur", ... ) + leverageNative( this, type, expectSync ); + + // Return false to allow normal processing in the caller + return false; + }, + trigger: function() { + + // Force setup before trigger + leverageNative( this, type ); + + // Return non-false to allow normal event-path propagation + return true; + }, + + delegateType: delegateType + }; +} ); + +// Create mouseenter/leave events using mouseover/out and event-time checks +// so that event delegation works in jQuery. +// Do the same for pointerenter/pointerleave and pointerover/pointerout +// +// Support: Safari 7 only +// Safari sends mouseenter too often; see: +// https://bugs.chromium.org/p/chromium/issues/detail?id=470258 +// for the description of the bug (it existed in older Chrome versions as well). +jQuery.each( { + mouseenter: "mouseover", + mouseleave: "mouseout", + pointerenter: "pointerover", + pointerleave: "pointerout" +}, function( orig, fix ) { + jQuery.event.special[ orig ] = { + delegateType: fix, + bindType: fix, + + handle: function( event ) { + var ret, + target = this, + related = event.relatedTarget, + handleObj = event.handleObj; + + // For mouseenter/leave call the handler if related is outside the target. + // NB: No relatedTarget if the mouse left/entered the browser window + if ( !related || ( related !== target && !jQuery.contains( target, related ) ) ) { + event.type = handleObj.origType; + ret = handleObj.handler.apply( this, arguments ); + event.type = fix; + } + return ret; + } + }; +} ); + +jQuery.fn.extend( { + + on: function( types, selector, data, fn ) { + return on( this, types, selector, data, fn ); + }, + one: function( types, selector, data, fn ) { + return on( this, types, selector, data, fn, 1 ); + }, + off: function( types, selector, fn ) { + var handleObj, type; + if ( types && types.preventDefault && types.handleObj ) { + + // ( event ) dispatched jQuery.Event + handleObj = types.handleObj; + jQuery( types.delegateTarget ).off( + handleObj.namespace ? + handleObj.origType + "." + handleObj.namespace : + handleObj.origType, + handleObj.selector, + handleObj.handler + ); + return this; + } + if ( typeof types === "object" ) { + + // ( types-object [, selector] ) + for ( type in types ) { + this.off( type, selector, types[ type ] ); + } + return this; + } + if ( selector === false || typeof selector === "function" ) { + + // ( types [, fn] ) + fn = selector; + selector = undefined; + } + if ( fn === false ) { + fn = returnFalse; + } + return this.each( function() { + jQuery.event.remove( this, types, fn, selector ); + } ); + } +} ); + + +var + + /* eslint-disable max-len */ + + // See https://github.com/eslint/eslint/issues/3229 + rxhtmlTag = /<(?!area|br|col|embed|hr|img|input|link|meta|param)(([a-z][^\/\0>\x20\t\r\n\f]*)[^>]*)\/>/gi, + + /* eslint-enable */ + + // Support: IE <=10 - 11, Edge 12 - 13 only + // In IE/Edge using regex groups here causes severe slowdowns. + // See https://connect.microsoft.com/IE/feedback/details/1736512/ + rnoInnerhtml = /<script|<style|<link/i, + + // checked="checked" or checked + rchecked = /checked\s*(?:[^=]|=\s*.checked.)/i, + rcleanScript = /^\s*<!(?:\[CDATA\[|--)|(?:\]\]|--)>\s*$/g; + +// Prefer a tbody over its parent table for containing new rows +function manipulationTarget( elem, content ) { + if ( nodeName( elem, "table" ) && + nodeName( content.nodeType !== 11 ? content : content.firstChild, "tr" ) ) { + + return jQuery( elem ).children( "tbody" )[ 0 ] || elem; + } + + return elem; +} + +// Replace/restore the type attribute of script elements for safe DOM manipulation +function disableScript( elem ) { + elem.type = ( elem.getAttribute( "type" ) !== null ) + "/" + elem.type; + return elem; +} +function restoreScript( elem ) { + if ( ( elem.type || "" ).slice( 0, 5 ) === "true/" ) { + elem.type = elem.type.slice( 5 ); + } else { + elem.removeAttribute( "type" ); + } + + return elem; +} + +function cloneCopyEvent( src, dest ) { + var i, l, type, pdataOld, pdataCur, udataOld, udataCur, events; + + if ( dest.nodeType !== 1 ) { + return; + } + + // 1. Copy private data: events, handlers, etc. + if ( dataPriv.hasData( src ) ) { + pdataOld = dataPriv.access( src ); + pdataCur = dataPriv.set( dest, pdataOld ); + events = pdataOld.events; + + if ( events ) { + delete pdataCur.handle; + pdataCur.events = {}; + + for ( type in events ) { + for ( i = 0, l = events[ type ].length; i < l; i++ ) { + jQuery.event.add( dest, type, events[ type ][ i ] ); + } + } + } + } + + // 2. Copy user data + if ( dataUser.hasData( src ) ) { + udataOld = dataUser.access( src ); + udataCur = jQuery.extend( {}, udataOld ); + + dataUser.set( dest, udataCur ); + } +} + +// Fix IE bugs, see support tests +function fixInput( src, dest ) { + var nodeName = dest.nodeName.toLowerCase(); + + // Fails to persist the checked state of a cloned checkbox or radio button. + if ( nodeName === "input" && rcheckableType.test( src.type ) ) { + dest.checked = src.checked; + + // Fails to return the selected option to the default selected state when cloning options + } else if ( nodeName === "input" || nodeName === "textarea" ) { + dest.defaultValue = src.defaultValue; + } +} + +function domManip( collection, args, callback, ignored ) { + + // Flatten any nested arrays + args = concat.apply( [], args ); + + var fragment, first, scripts, hasScripts, node, doc, + i = 0, + l = collection.length, + iNoClone = l - 1, + value = args[ 0 ], + valueIsFunction = isFunction( value ); + + // We can't cloneNode fragments that contain checked, in WebKit + if ( valueIsFunction || + ( l > 1 && typeof value === "string" && + !support.checkClone && rchecked.test( value ) ) ) { + return collection.each( function( index ) { + var self = collection.eq( index ); + if ( valueIsFunction ) { + args[ 0 ] = value.call( this, index, self.html() ); + } + domManip( self, args, callback, ignored ); + } ); + } + + if ( l ) { + fragment = buildFragment( args, collection[ 0 ].ownerDocument, false, collection, ignored ); + first = fragment.firstChild; + + if ( fragment.childNodes.length === 1 ) { + fragment = first; + } + + // Require either new content or an interest in ignored elements to invoke the callback + if ( first || ignored ) { + scripts = jQuery.map( getAll( fragment, "script" ), disableScript ); + hasScripts = scripts.length; + + // Use the original fragment for the last item + // instead of the first because it can end up + // being emptied incorrectly in certain situations (#8070). + for ( ; i < l; i++ ) { + node = fragment; + + if ( i !== iNoClone ) { + node = jQuery.clone( node, true, true ); + + // Keep references to cloned scripts for later restoration + if ( hasScripts ) { + + // Support: Android <=4.0 only, PhantomJS 1 only + // push.apply(_, arraylike) throws on ancient WebKit + jQuery.merge( scripts, getAll( node, "script" ) ); + } + } + + callback.call( collection[ i ], node, i ); + } + + if ( hasScripts ) { + doc = scripts[ scripts.length - 1 ].ownerDocument; + + // Reenable scripts + jQuery.map( scripts, restoreScript ); + + // Evaluate executable scripts on first document insertion + for ( i = 0; i < hasScripts; i++ ) { + node = scripts[ i ]; + if ( rscriptType.test( node.type || "" ) && + !dataPriv.access( node, "globalEval" ) && + jQuery.contains( doc, node ) ) { + + if ( node.src && ( node.type || "" ).toLowerCase() !== "module" ) { + + // Optional AJAX dependency, but won't run scripts if not present + if ( jQuery._evalUrl && !node.noModule ) { + jQuery._evalUrl( node.src, { + nonce: node.nonce || node.getAttribute( "nonce" ) + } ); + } + } else { + DOMEval( node.textContent.replace( rcleanScript, "" ), node, doc ); + } + } + } + } + } + } + + return collection; +} + +function remove( elem, selector, keepData ) { + var node, + nodes = selector ? jQuery.filter( selector, elem ) : elem, + i = 0; + + for ( ; ( node = nodes[ i ] ) != null; i++ ) { + if ( !keepData && node.nodeType === 1 ) { + jQuery.cleanData( getAll( node ) ); + } + + if ( node.parentNode ) { + if ( keepData && isAttached( node ) ) { + setGlobalEval( getAll( node, "script" ) ); + } + node.parentNode.removeChild( node ); + } + } + + return elem; +} + +jQuery.extend( { + htmlPrefilter: function( html ) { + return html.replace( rxhtmlTag, "<$1></$2>" ); + }, + + clone: function( elem, dataAndEvents, deepDataAndEvents ) { + var i, l, srcElements, destElements, + clone = elem.cloneNode( true ), + inPage = isAttached( elem ); + + // Fix IE cloning issues + if ( !support.noCloneChecked && ( elem.nodeType === 1 || elem.nodeType === 11 ) && + !jQuery.isXMLDoc( elem ) ) { + + // We eschew Sizzle here for performance reasons: https://jsperf.com/getall-vs-sizzle/2 + destElements = getAll( clone ); + srcElements = getAll( elem ); + + for ( i = 0, l = srcElements.length; i < l; i++ ) { + fixInput( srcElements[ i ], destElements[ i ] ); + } + } + + // Copy the events from the original to the clone + if ( dataAndEvents ) { + if ( deepDataAndEvents ) { + srcElements = srcElements || getAll( elem ); + destElements = destElements || getAll( clone ); + + for ( i = 0, l = srcElements.length; i < l; i++ ) { + cloneCopyEvent( srcElements[ i ], destElements[ i ] ); + } + } else { + cloneCopyEvent( elem, clone ); + } + } + + // Preserve script evaluation history + destElements = getAll( clone, "script" ); + if ( destElements.length > 0 ) { + setGlobalEval( destElements, !inPage && getAll( elem, "script" ) ); + } + + // Return the cloned set + return clone; + }, + + cleanData: function( elems ) { + var data, elem, type, + special = jQuery.event.special, + i = 0; + + for ( ; ( elem = elems[ i ] ) !== undefined; i++ ) { + if ( acceptData( elem ) ) { + if ( ( data = elem[ dataPriv.expando ] ) ) { + if ( data.events ) { + for ( type in data.events ) { + if ( special[ type ] ) { + jQuery.event.remove( elem, type ); + + // This is a shortcut to avoid jQuery.event.remove's overhead + } else { + jQuery.removeEvent( elem, type, data.handle ); + } + } + } + + // Support: Chrome <=35 - 45+ + // Assign undefined instead of using delete, see Data#remove + elem[ dataPriv.expando ] = undefined; + } + if ( elem[ dataUser.expando ] ) { + + // Support: Chrome <=35 - 45+ + // Assign undefined instead of using delete, see Data#remove + elem[ dataUser.expando ] = undefined; + } + } + } + } +} ); + +jQuery.fn.extend( { + detach: function( selector ) { + return remove( this, selector, true ); + }, + + remove: function( selector ) { + return remove( this, selector ); + }, + + text: function( value ) { + return access( this, function( value ) { + return value === undefined ? + jQuery.text( this ) : + this.empty().each( function() { + if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) { + this.textContent = value; + } + } ); + }, null, value, arguments.length ); + }, + + append: function() { + return domManip( this, arguments, function( elem ) { + if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) { + var target = manipulationTarget( this, elem ); + target.appendChild( elem ); + } + } ); + }, + + prepend: function() { + return domManip( this, arguments, function( elem ) { + if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) { + var target = manipulationTarget( this, elem ); + target.insertBefore( elem, target.firstChild ); + } + } ); + }, + + before: function() { + return domManip( this, arguments, function( elem ) { + if ( this.parentNode ) { + this.parentNode.insertBefore( elem, this ); + } + } ); + }, + + after: function() { + return domManip( this, arguments, function( elem ) { + if ( this.parentNode ) { + this.parentNode.insertBefore( elem, this.nextSibling ); + } + } ); + }, + + empty: function() { + var elem, + i = 0; + + for ( ; ( elem = this[ i ] ) != null; i++ ) { + if ( elem.nodeType === 1 ) { + + // Prevent memory leaks + jQuery.cleanData( getAll( elem, false ) ); + + // Remove any remaining nodes + elem.textContent = ""; + } + } + + return this; + }, + + clone: function( dataAndEvents, deepDataAndEvents ) { + dataAndEvents = dataAndEvents == null ? false : dataAndEvents; + deepDataAndEvents = deepDataAndEvents == null ? dataAndEvents : deepDataAndEvents; + + return this.map( function() { + return jQuery.clone( this, dataAndEvents, deepDataAndEvents ); + } ); + }, + + html: function( value ) { + return access( this, function( value ) { + var elem = this[ 0 ] || {}, + i = 0, + l = this.length; + + if ( value === undefined && elem.nodeType === 1 ) { + return elem.innerHTML; + } + + // See if we can take a shortcut and just use innerHTML + if ( typeof value === "string" && !rnoInnerhtml.test( value ) && + !wrapMap[ ( rtagName.exec( value ) || [ "", "" ] )[ 1 ].toLowerCase() ] ) { + + value = jQuery.htmlPrefilter( value ); + + try { + for ( ; i < l; i++ ) { + elem = this[ i ] || {}; + + // Remove element nodes and prevent memory leaks + if ( elem.nodeType === 1 ) { + jQuery.cleanData( getAll( elem, false ) ); + elem.innerHTML = value; + } + } + + elem = 0; + + // If using innerHTML throws an exception, use the fallback method + } catch ( e ) {} + } + + if ( elem ) { + this.empty().append( value ); + } + }, null, value, arguments.length ); + }, + + replaceWith: function() { + var ignored = []; + + // Make the changes, replacing each non-ignored context element with the new content + return domManip( this, arguments, function( elem ) { + var parent = this.parentNode; + + if ( jQuery.inArray( this, ignored ) < 0 ) { + jQuery.cleanData( getAll( this ) ); + if ( parent ) { + parent.replaceChild( elem, this ); + } + } + + // Force callback invocation + }, ignored ); + } +} ); + +jQuery.each( { + appendTo: "append", + prependTo: "prepend", + insertBefore: "before", + insertAfter: "after", + replaceAll: "replaceWith" +}, function( name, original ) { + jQuery.fn[ name ] = function( selector ) { + var elems, + ret = [], + insert = jQuery( selector ), + last = insert.length - 1, + i = 0; + + for ( ; i <= last; i++ ) { + elems = i === last ? this : this.clone( true ); + jQuery( insert[ i ] )[ original ]( elems ); + + // Support: Android <=4.0 only, PhantomJS 1 only + // .get() because push.apply(_, arraylike) throws on ancient WebKit + push.apply( ret, elems.get() ); + } + + return this.pushStack( ret ); + }; +} ); +var rnumnonpx = new RegExp( "^(" + pnum + ")(?!px)[a-z%]+$", "i" ); + +var getStyles = function( elem ) { + + // Support: IE <=11 only, Firefox <=30 (#15098, #14150) + // IE throws on elements created in popups + // FF meanwhile throws on frame elements through "defaultView.getComputedStyle" + var view = elem.ownerDocument.defaultView; + + if ( !view || !view.opener ) { + view = window; + } + + return view.getComputedStyle( elem ); + }; + +var rboxStyle = new RegExp( cssExpand.join( "|" ), "i" ); + + + +( function() { + + // Executing both pixelPosition & boxSizingReliable tests require only one layout + // so they're executed at the same time to save the second computation. + function computeStyleTests() { + + // This is a singleton, we need to execute it only once + if ( !div ) { + return; + } + + container.style.cssText = "position:absolute;left:-11111px;width:60px;" + + "margin-top:1px;padding:0;border:0"; + div.style.cssText = + "position:relative;display:block;box-sizing:border-box;overflow:scroll;" + + "margin:auto;border:1px;padding:1px;" + + "width:60%;top:1%"; + documentElement.appendChild( container ).appendChild( div ); + + var divStyle = window.getComputedStyle( div ); + pixelPositionVal = divStyle.top !== "1%"; + + // Support: Android 4.0 - 4.3 only, Firefox <=3 - 44 + reliableMarginLeftVal = roundPixelMeasures( divStyle.marginLeft ) === 12; + + // Support: Android 4.0 - 4.3 only, Safari <=9.1 - 10.1, iOS <=7.0 - 9.3 + // Some styles come back with percentage values, even though they shouldn't + div.style.right = "60%"; + pixelBoxStylesVal = roundPixelMeasures( divStyle.right ) === 36; + + // Support: IE 9 - 11 only + // Detect misreporting of content dimensions for box-sizing:border-box elements + boxSizingReliableVal = roundPixelMeasures( divStyle.width ) === 36; + + // Support: IE 9 only + // Detect overflow:scroll screwiness (gh-3699) + // Support: Chrome <=64 + // Don't get tricked when zoom affects offsetWidth (gh-4029) + div.style.position = "absolute"; + scrollboxSizeVal = roundPixelMeasures( div.offsetWidth / 3 ) === 12; + + documentElement.removeChild( container ); + + // Nullify the div so it wouldn't be stored in the memory and + // it will also be a sign that checks already performed + div = null; + } + + function roundPixelMeasures( measure ) { + return Math.round( parseFloat( measure ) ); + } + + var pixelPositionVal, boxSizingReliableVal, scrollboxSizeVal, pixelBoxStylesVal, + reliableMarginLeftVal, + container = document.createElement( "div" ), + div = document.createElement( "div" ); + + // Finish early in limited (non-browser) environments + if ( !div.style ) { + return; + } + + // Support: IE <=9 - 11 only + // Style of cloned element affects source element cloned (#8908) + div.style.backgroundClip = "content-box"; + div.cloneNode( true ).style.backgroundClip = ""; + support.clearCloneStyle = div.style.backgroundClip === "content-box"; + + jQuery.extend( support, { + boxSizingReliable: function() { + computeStyleTests(); + return boxSizingReliableVal; + }, + pixelBoxStyles: function() { + computeStyleTests(); + return pixelBoxStylesVal; + }, + pixelPosition: function() { + computeStyleTests(); + return pixelPositionVal; + }, + reliableMarginLeft: function() { + computeStyleTests(); + return reliableMarginLeftVal; + }, + scrollboxSize: function() { + computeStyleTests(); + return scrollboxSizeVal; + } + } ); +} )(); + + +function curCSS( elem, name, computed ) { + var width, minWidth, maxWidth, ret, + + // Support: Firefox 51+ + // Retrieving style before computed somehow + // fixes an issue with getting wrong values + // on detached elements + style = elem.style; + + computed = computed || getStyles( elem ); + + // getPropertyValue is needed for: + // .css('filter') (IE 9 only, #12537) + // .css('--customProperty) (#3144) + if ( computed ) { + ret = computed.getPropertyValue( name ) || computed[ name ]; + + if ( ret === "" && !isAttached( elem ) ) { + ret = jQuery.style( elem, name ); + } + + // A tribute to the "awesome hack by Dean Edwards" + // Android Browser returns percentage for some values, + // but width seems to be reliably pixels. + // This is against the CSSOM draft spec: + // https://drafts.csswg.org/cssom/#resolved-values + if ( !support.pixelBoxStyles() && rnumnonpx.test( ret ) && rboxStyle.test( name ) ) { + + // Remember the original values + width = style.width; + minWidth = style.minWidth; + maxWidth = style.maxWidth; + + // Put in the new values to get a computed value out + style.minWidth = style.maxWidth = style.width = ret; + ret = computed.width; + + // Revert the changed values + style.width = width; + style.minWidth = minWidth; + style.maxWidth = maxWidth; + } + } + + return ret !== undefined ? + + // Support: IE <=9 - 11 only + // IE returns zIndex value as an integer. + ret + "" : + ret; +} + + +function addGetHookIf( conditionFn, hookFn ) { + + // Define the hook, we'll check on the first run if it's really needed. + return { + get: function() { + if ( conditionFn() ) { + + // Hook not needed (or it's not possible to use it due + // to missing dependency), remove it. + delete this.get; + return; + } + + // Hook needed; redefine it so that the support test is not executed again. + return ( this.get = hookFn ).apply( this, arguments ); + } + }; +} + + +var cssPrefixes = [ "Webkit", "Moz", "ms" ], + emptyStyle = document.createElement( "div" ).style, + vendorProps = {}; + +// Return a vendor-prefixed property or undefined +function vendorPropName( name ) { + + // Check for vendor prefixed names + var capName = name[ 0 ].toUpperCase() + name.slice( 1 ), + i = cssPrefixes.length; + + while ( i-- ) { + name = cssPrefixes[ i ] + capName; + if ( name in emptyStyle ) { + return name; + } + } +} + +// Return a potentially-mapped jQuery.cssProps or vendor prefixed property +function finalPropName( name ) { + var final = jQuery.cssProps[ name ] || vendorProps[ name ]; + + if ( final ) { + return final; + } + if ( name in emptyStyle ) { + return name; + } + return vendorProps[ name ] = vendorPropName( name ) || name; +} + + +var + + // Swappable if display is none or starts with table + // except "table", "table-cell", or "table-caption" + // See here for display values: https://developer.mozilla.org/en-US/docs/CSS/display + rdisplayswap = /^(none|table(?!-c[ea]).+)/, + rcustomProp = /^--/, + cssShow = { position: "absolute", visibility: "hidden", display: "block" }, + cssNormalTransform = { + letterSpacing: "0", + fontWeight: "400" + }; + +function setPositiveNumber( elem, value, subtract ) { + + // Any relative (+/-) values have already been + // normalized at this point + var matches = rcssNum.exec( value ); + return matches ? + + // Guard against undefined "subtract", e.g., when used as in cssHooks + Math.max( 0, matches[ 2 ] - ( subtract || 0 ) ) + ( matches[ 3 ] || "px" ) : + value; +} + +function boxModelAdjustment( elem, dimension, box, isBorderBox, styles, computedVal ) { + var i = dimension === "width" ? 1 : 0, + extra = 0, + delta = 0; + + // Adjustment may not be necessary + if ( box === ( isBorderBox ? "border" : "content" ) ) { + return 0; + } + + for ( ; i < 4; i += 2 ) { + + // Both box models exclude margin + if ( box === "margin" ) { + delta += jQuery.css( elem, box + cssExpand[ i ], true, styles ); + } + + // If we get here with a content-box, we're seeking "padding" or "border" or "margin" + if ( !isBorderBox ) { + + // Add padding + delta += jQuery.css( elem, "padding" + cssExpand[ i ], true, styles ); + + // For "border" or "margin", add border + if ( box !== "padding" ) { + delta += jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles ); + + // But still keep track of it otherwise + } else { + extra += jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles ); + } + + // If we get here with a border-box (content + padding + border), we're seeking "content" or + // "padding" or "margin" + } else { + + // For "content", subtract padding + if ( box === "content" ) { + delta -= jQuery.css( elem, "padding" + cssExpand[ i ], true, styles ); + } + + // For "content" or "padding", subtract border + if ( box !== "margin" ) { + delta -= jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles ); + } + } + } + + // Account for positive content-box scroll gutter when requested by providing computedVal + if ( !isBorderBox && computedVal >= 0 ) { + + // offsetWidth/offsetHeight is a rounded sum of content, padding, scroll gutter, and border + // Assuming integer scroll gutter, subtract the rest and round down + delta += Math.max( 0, Math.ceil( + elem[ "offset" + dimension[ 0 ].toUpperCase() + dimension.slice( 1 ) ] - + computedVal - + delta - + extra - + 0.5 + + // If offsetWidth/offsetHeight is unknown, then we can't determine content-box scroll gutter + // Use an explicit zero to avoid NaN (gh-3964) + ) ) || 0; + } + + return delta; +} + +function getWidthOrHeight( elem, dimension, extra ) { + + // Start with computed style + var styles = getStyles( elem ), + + // To avoid forcing a reflow, only fetch boxSizing if we need it (gh-4322). + // Fake content-box until we know it's needed to know the true value. + boxSizingNeeded = !support.boxSizingReliable() || extra, + isBorderBox = boxSizingNeeded && + jQuery.css( elem, "boxSizing", false, styles ) === "border-box", + valueIsBorderBox = isBorderBox, + + val = curCSS( elem, dimension, styles ), + offsetProp = "offset" + dimension[ 0 ].toUpperCase() + dimension.slice( 1 ); + + // Support: Firefox <=54 + // Return a confounding non-pixel value or feign ignorance, as appropriate. + if ( rnumnonpx.test( val ) ) { + if ( !extra ) { + return val; + } + val = "auto"; + } + + + // Fall back to offsetWidth/offsetHeight when value is "auto" + // This happens for inline elements with no explicit setting (gh-3571) + // Support: Android <=4.1 - 4.3 only + // Also use offsetWidth/offsetHeight for misreported inline dimensions (gh-3602) + // Support: IE 9-11 only + // Also use offsetWidth/offsetHeight for when box sizing is unreliable + // We use getClientRects() to check for hidden/disconnected. + // In those cases, the computed value can be trusted to be border-box + if ( ( !support.boxSizingReliable() && isBorderBox || + val === "auto" || + !parseFloat( val ) && jQuery.css( elem, "display", false, styles ) === "inline" ) && + elem.getClientRects().length ) { + + isBorderBox = jQuery.css( elem, "boxSizing", false, styles ) === "border-box"; + + // Where available, offsetWidth/offsetHeight approximate border box dimensions. + // Where not available (e.g., SVG), assume unreliable box-sizing and interpret the + // retrieved value as a content box dimension. + valueIsBorderBox = offsetProp in elem; + if ( valueIsBorderBox ) { + val = elem[ offsetProp ]; + } + } + + // Normalize "" and auto + val = parseFloat( val ) || 0; + + // Adjust for the element's box model + return ( val + + boxModelAdjustment( + elem, + dimension, + extra || ( isBorderBox ? "border" : "content" ), + valueIsBorderBox, + styles, + + // Provide the current computed size to request scroll gutter calculation (gh-3589) + val + ) + ) + "px"; +} + +jQuery.extend( { + + // Add in style property hooks for overriding the default + // behavior of getting and setting a style property + cssHooks: { + opacity: { + get: function( elem, computed ) { + if ( computed ) { + + // We should always get a number back from opacity + var ret = curCSS( elem, "opacity" ); + return ret === "" ? "1" : ret; + } + } + } + }, + + // Don't automatically add "px" to these possibly-unitless properties + cssNumber: { + "animationIterationCount": true, + "columnCount": true, + "fillOpacity": true, + "flexGrow": true, + "flexShrink": true, + "fontWeight": true, + "gridArea": true, + "gridColumn": true, + "gridColumnEnd": true, + "gridColumnStart": true, + "gridRow": true, + "gridRowEnd": true, + "gridRowStart": true, + "lineHeight": true, + "opacity": true, + "order": true, + "orphans": true, + "widows": true, + "zIndex": true, + "zoom": true + }, + + // Add in properties whose names you wish to fix before + // setting or getting the value + cssProps: {}, + + // Get and set the style property on a DOM Node + style: function( elem, name, value, extra ) { + + // Don't set styles on text and comment nodes + if ( !elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style ) { + return; + } + + // Make sure that we're working with the right name + var ret, type, hooks, + origName = camelCase( name ), + isCustomProp = rcustomProp.test( name ), + style = elem.style; + + // Make sure that we're working with the right name. We don't + // want to query the value if it is a CSS custom property + // since they are user-defined. + if ( !isCustomProp ) { + name = finalPropName( origName ); + } + + // Gets hook for the prefixed version, then unprefixed version + hooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ]; + + // Check if we're setting a value + if ( value !== undefined ) { + type = typeof value; + + // Convert "+=" or "-=" to relative numbers (#7345) + if ( type === "string" && ( ret = rcssNum.exec( value ) ) && ret[ 1 ] ) { + value = adjustCSS( elem, name, ret ); + + // Fixes bug #9237 + type = "number"; + } + + // Make sure that null and NaN values aren't set (#7116) + if ( value == null || value !== value ) { + return; + } + + // If a number was passed in, add the unit (except for certain CSS properties) + // The isCustomProp check can be removed in jQuery 4.0 when we only auto-append + // "px" to a few hardcoded values. + if ( type === "number" && !isCustomProp ) { + value += ret && ret[ 3 ] || ( jQuery.cssNumber[ origName ] ? "" : "px" ); + } + + // background-* props affect original clone's values + if ( !support.clearCloneStyle && value === "" && name.indexOf( "background" ) === 0 ) { + style[ name ] = "inherit"; + } + + // If a hook was provided, use that value, otherwise just set the specified value + if ( !hooks || !( "set" in hooks ) || + ( value = hooks.set( elem, value, extra ) ) !== undefined ) { + + if ( isCustomProp ) { + style.setProperty( name, value ); + } else { + style[ name ] = value; + } + } + + } else { + + // If a hook was provided get the non-computed value from there + if ( hooks && "get" in hooks && + ( ret = hooks.get( elem, false, extra ) ) !== undefined ) { + + return ret; + } + + // Otherwise just get the value from the style object + return style[ name ]; + } + }, + + css: function( elem, name, extra, styles ) { + var val, num, hooks, + origName = camelCase( name ), + isCustomProp = rcustomProp.test( name ); + + // Make sure that we're working with the right name. We don't + // want to modify the value if it is a CSS custom property + // since they are user-defined. + if ( !isCustomProp ) { + name = finalPropName( origName ); + } + + // Try prefixed name followed by the unprefixed name + hooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ]; + + // If a hook was provided get the computed value from there + if ( hooks && "get" in hooks ) { + val = hooks.get( elem, true, extra ); + } + + // Otherwise, if a way to get the computed value exists, use that + if ( val === undefined ) { + val = curCSS( elem, name, styles ); + } + + // Convert "normal" to computed value + if ( val === "normal" && name in cssNormalTransform ) { + val = cssNormalTransform[ name ]; + } + + // Make numeric if forced or a qualifier was provided and val looks numeric + if ( extra === "" || extra ) { + num = parseFloat( val ); + return extra === true || isFinite( num ) ? num || 0 : val; + } + + return val; + } +} ); + +jQuery.each( [ "height", "width" ], function( i, dimension ) { + jQuery.cssHooks[ dimension ] = { + get: function( elem, computed, extra ) { + if ( computed ) { + + // Certain elements can have dimension info if we invisibly show them + // but it must have a current display style that would benefit + return rdisplayswap.test( jQuery.css( elem, "display" ) ) && + + // Support: Safari 8+ + // Table columns in Safari have non-zero offsetWidth & zero + // getBoundingClientRect().width unless display is changed. + // Support: IE <=11 only + // Running getBoundingClientRect on a disconnected node + // in IE throws an error. + ( !elem.getClientRects().length || !elem.getBoundingClientRect().width ) ? + swap( elem, cssShow, function() { + return getWidthOrHeight( elem, dimension, extra ); + } ) : + getWidthOrHeight( elem, dimension, extra ); + } + }, + + set: function( elem, value, extra ) { + var matches, + styles = getStyles( elem ), + + // Only read styles.position if the test has a chance to fail + // to avoid forcing a reflow. + scrollboxSizeBuggy = !support.scrollboxSize() && + styles.position === "absolute", + + // To avoid forcing a reflow, only fetch boxSizing if we need it (gh-3991) + boxSizingNeeded = scrollboxSizeBuggy || extra, + isBorderBox = boxSizingNeeded && + jQuery.css( elem, "boxSizing", false, styles ) === "border-box", + subtract = extra ? + boxModelAdjustment( + elem, + dimension, + extra, + isBorderBox, + styles + ) : + 0; + + // Account for unreliable border-box dimensions by comparing offset* to computed and + // faking a content-box to get border and padding (gh-3699) + if ( isBorderBox && scrollboxSizeBuggy ) { + subtract -= Math.ceil( + elem[ "offset" + dimension[ 0 ].toUpperCase() + dimension.slice( 1 ) ] - + parseFloat( styles[ dimension ] ) - + boxModelAdjustment( elem, dimension, "border", false, styles ) - + 0.5 + ); + } + + // Convert to pixels if value adjustment is needed + if ( subtract && ( matches = rcssNum.exec( value ) ) && + ( matches[ 3 ] || "px" ) !== "px" ) { + + elem.style[ dimension ] = value; + value = jQuery.css( elem, dimension ); + } + + return setPositiveNumber( elem, value, subtract ); + } + }; +} ); + +jQuery.cssHooks.marginLeft = addGetHookIf( support.reliableMarginLeft, + function( elem, computed ) { + if ( computed ) { + return ( parseFloat( curCSS( elem, "marginLeft" ) ) || + elem.getBoundingClientRect().left - + swap( elem, { marginLeft: 0 }, function() { + return elem.getBoundingClientRect().left; + } ) + ) + "px"; + } + } +); + +// These hooks are used by animate to expand properties +jQuery.each( { + margin: "", + padding: "", + border: "Width" +}, function( prefix, suffix ) { + jQuery.cssHooks[ prefix + suffix ] = { + expand: function( value ) { + var i = 0, + expanded = {}, + + // Assumes a single number if not a string + parts = typeof value === "string" ? value.split( " " ) : [ value ]; + + for ( ; i < 4; i++ ) { + expanded[ prefix + cssExpand[ i ] + suffix ] = + parts[ i ] || parts[ i - 2 ] || parts[ 0 ]; + } + + return expanded; + } + }; + + if ( prefix !== "margin" ) { + jQuery.cssHooks[ prefix + suffix ].set = setPositiveNumber; + } +} ); + +jQuery.fn.extend( { + css: function( name, value ) { + return access( this, function( elem, name, value ) { + var styles, len, + map = {}, + i = 0; + + if ( Array.isArray( name ) ) { + styles = getStyles( elem ); + len = name.length; + + for ( ; i < len; i++ ) { + map[ name[ i ] ] = jQuery.css( elem, name[ i ], false, styles ); + } + + return map; + } + + return value !== undefined ? + jQuery.style( elem, name, value ) : + jQuery.css( elem, name ); + }, name, value, arguments.length > 1 ); + } +} ); + + +function Tween( elem, options, prop, end, easing ) { + return new Tween.prototype.init( elem, options, prop, end, easing ); +} +jQuery.Tween = Tween; + +Tween.prototype = { + constructor: Tween, + init: function( elem, options, prop, end, easing, unit ) { + this.elem = elem; + this.prop = prop; + this.easing = easing || jQuery.easing._default; + this.options = options; + this.start = this.now = this.cur(); + this.end = end; + this.unit = unit || ( jQuery.cssNumber[ prop ] ? "" : "px" ); + }, + cur: function() { + var hooks = Tween.propHooks[ this.prop ]; + + return hooks && hooks.get ? + hooks.get( this ) : + Tween.propHooks._default.get( this ); + }, + run: function( percent ) { + var eased, + hooks = Tween.propHooks[ this.prop ]; + + if ( this.options.duration ) { + this.pos = eased = jQuery.easing[ this.easing ]( + percent, this.options.duration * percent, 0, 1, this.options.duration + ); + } else { + this.pos = eased = percent; + } + this.now = ( this.end - this.start ) * eased + this.start; + + if ( this.options.step ) { + this.options.step.call( this.elem, this.now, this ); + } + + if ( hooks && hooks.set ) { + hooks.set( this ); + } else { + Tween.propHooks._default.set( this ); + } + return this; + } +}; + +Tween.prototype.init.prototype = Tween.prototype; + +Tween.propHooks = { + _default: { + get: function( tween ) { + var result; + + // Use a property on the element directly when it is not a DOM element, + // or when there is no matching style property that exists. + if ( tween.elem.nodeType !== 1 || + tween.elem[ tween.prop ] != null && tween.elem.style[ tween.prop ] == null ) { + return tween.elem[ tween.prop ]; + } + + // Passing an empty string as a 3rd parameter to .css will automatically + // attempt a parseFloat and fallback to a string if the parse fails. + // Simple values such as "10px" are parsed to Float; + // complex values such as "rotate(1rad)" are returned as-is. + result = jQuery.css( tween.elem, tween.prop, "" ); + + // Empty strings, null, undefined and "auto" are converted to 0. + return !result || result === "auto" ? 0 : result; + }, + set: function( tween ) { + + // Use step hook for back compat. + // Use cssHook if its there. + // Use .style if available and use plain properties where available. + if ( jQuery.fx.step[ tween.prop ] ) { + jQuery.fx.step[ tween.prop ]( tween ); + } else if ( tween.elem.nodeType === 1 && ( + jQuery.cssHooks[ tween.prop ] || + tween.elem.style[ finalPropName( tween.prop ) ] != null ) ) { + jQuery.style( tween.elem, tween.prop, tween.now + tween.unit ); + } else { + tween.elem[ tween.prop ] = tween.now; + } + } + } +}; + +// Support: IE <=9 only +// Panic based approach to setting things on disconnected nodes +Tween.propHooks.scrollTop = Tween.propHooks.scrollLeft = { + set: function( tween ) { + if ( tween.elem.nodeType && tween.elem.parentNode ) { + tween.elem[ tween.prop ] = tween.now; + } + } +}; + +jQuery.easing = { + linear: function( p ) { + return p; + }, + swing: function( p ) { + return 0.5 - Math.cos( p * Math.PI ) / 2; + }, + _default: "swing" +}; + +jQuery.fx = Tween.prototype.init; + +// Back compat <1.8 extension point +jQuery.fx.step = {}; + + + + +var + fxNow, inProgress, + rfxtypes = /^(?:toggle|show|hide)$/, + rrun = /queueHooks$/; + +function schedule() { + if ( inProgress ) { + if ( document.hidden === false && window.requestAnimationFrame ) { + window.requestAnimationFrame( schedule ); + } else { + window.setTimeout( schedule, jQuery.fx.interval ); + } + + jQuery.fx.tick(); + } +} + +// Animations created synchronously will run synchronously +function createFxNow() { + window.setTimeout( function() { + fxNow = undefined; + } ); + return ( fxNow = Date.now() ); +} + +// Generate parameters to create a standard animation +function genFx( type, includeWidth ) { + var which, + i = 0, + attrs = { height: type }; + + // If we include width, step value is 1 to do all cssExpand values, + // otherwise step value is 2 to skip over Left and Right + includeWidth = includeWidth ? 1 : 0; + for ( ; i < 4; i += 2 - includeWidth ) { + which = cssExpand[ i ]; + attrs[ "margin" + which ] = attrs[ "padding" + which ] = type; + } + + if ( includeWidth ) { + attrs.opacity = attrs.width = type; + } + + return attrs; +} + +function createTween( value, prop, animation ) { + var tween, + collection = ( Animation.tweeners[ prop ] || [] ).concat( Animation.tweeners[ "*" ] ), + index = 0, + length = collection.length; + for ( ; index < length; index++ ) { + if ( ( tween = collection[ index ].call( animation, prop, value ) ) ) { + + // We're done with this property + return tween; + } + } +} + +function defaultPrefilter( elem, props, opts ) { + var prop, value, toggle, hooks, oldfire, propTween, restoreDisplay, display, + isBox = "width" in props || "height" in props, + anim = this, + orig = {}, + style = elem.style, + hidden = elem.nodeType && isHiddenWithinTree( elem ), + dataShow = dataPriv.get( elem, "fxshow" ); + + // Queue-skipping animations hijack the fx hooks + if ( !opts.queue ) { + hooks = jQuery._queueHooks( elem, "fx" ); + if ( hooks.unqueued == null ) { + hooks.unqueued = 0; + oldfire = hooks.empty.fire; + hooks.empty.fire = function() { + if ( !hooks.unqueued ) { + oldfire(); + } + }; + } + hooks.unqueued++; + + anim.always( function() { + + // Ensure the complete handler is called before this completes + anim.always( function() { + hooks.unqueued--; + if ( !jQuery.queue( elem, "fx" ).length ) { + hooks.empty.fire(); + } + } ); + } ); + } + + // Detect show/hide animations + for ( prop in props ) { + value = props[ prop ]; + if ( rfxtypes.test( value ) ) { + delete props[ prop ]; + toggle = toggle || value === "toggle"; + if ( value === ( hidden ? "hide" : "show" ) ) { + + // Pretend to be hidden if this is a "show" and + // there is still data from a stopped show/hide + if ( value === "show" && dataShow && dataShow[ prop ] !== undefined ) { + hidden = true; + + // Ignore all other no-op show/hide data + } else { + continue; + } + } + orig[ prop ] = dataShow && dataShow[ prop ] || jQuery.style( elem, prop ); + } + } + + // Bail out if this is a no-op like .hide().hide() + propTween = !jQuery.isEmptyObject( props ); + if ( !propTween && jQuery.isEmptyObject( orig ) ) { + return; + } + + // Restrict "overflow" and "display" styles during box animations + if ( isBox && elem.nodeType === 1 ) { + + // Support: IE <=9 - 11, Edge 12 - 15 + // Record all 3 overflow attributes because IE does not infer the shorthand + // from identically-valued overflowX and overflowY and Edge just mirrors + // the overflowX value there. + opts.overflow = [ style.overflow, style.overflowX, style.overflowY ]; + + // Identify a display type, preferring old show/hide data over the CSS cascade + restoreDisplay = dataShow && dataShow.display; + if ( restoreDisplay == null ) { + restoreDisplay = dataPriv.get( elem, "display" ); + } + display = jQuery.css( elem, "display" ); + if ( display === "none" ) { + if ( restoreDisplay ) { + display = restoreDisplay; + } else { + + // Get nonempty value(s) by temporarily forcing visibility + showHide( [ elem ], true ); + restoreDisplay = elem.style.display || restoreDisplay; + display = jQuery.css( elem, "display" ); + showHide( [ elem ] ); + } + } + + // Animate inline elements as inline-block + if ( display === "inline" || display === "inline-block" && restoreDisplay != null ) { + if ( jQuery.css( elem, "float" ) === "none" ) { + + // Restore the original display value at the end of pure show/hide animations + if ( !propTween ) { + anim.done( function() { + style.display = restoreDisplay; + } ); + if ( restoreDisplay == null ) { + display = style.display; + restoreDisplay = display === "none" ? "" : display; + } + } + style.display = "inline-block"; + } + } + } + + if ( opts.overflow ) { + style.overflow = "hidden"; + anim.always( function() { + style.overflow = opts.overflow[ 0 ]; + style.overflowX = opts.overflow[ 1 ]; + style.overflowY = opts.overflow[ 2 ]; + } ); + } + + // Implement show/hide animations + propTween = false; + for ( prop in orig ) { + + // General show/hide setup for this element animation + if ( !propTween ) { + if ( dataShow ) { + if ( "hidden" in dataShow ) { + hidden = dataShow.hidden; + } + } else { + dataShow = dataPriv.access( elem, "fxshow", { display: restoreDisplay } ); + } + + // Store hidden/visible for toggle so `.stop().toggle()` "reverses" + if ( toggle ) { + dataShow.hidden = !hidden; + } + + // Show elements before animating them + if ( hidden ) { + showHide( [ elem ], true ); + } + + /* eslint-disable no-loop-func */ + + anim.done( function() { + + /* eslint-enable no-loop-func */ + + // The final step of a "hide" animation is actually hiding the element + if ( !hidden ) { + showHide( [ elem ] ); + } + dataPriv.remove( elem, "fxshow" ); + for ( prop in orig ) { + jQuery.style( elem, prop, orig[ prop ] ); + } + } ); + } + + // Per-property setup + propTween = createTween( hidden ? dataShow[ prop ] : 0, prop, anim ); + if ( !( prop in dataShow ) ) { + dataShow[ prop ] = propTween.start; + if ( hidden ) { + propTween.end = propTween.start; + propTween.start = 0; + } + } + } +} + +function propFilter( props, specialEasing ) { + var index, name, easing, value, hooks; + + // camelCase, specialEasing and expand cssHook pass + for ( index in props ) { + name = camelCase( index ); + easing = specialEasing[ name ]; + value = props[ index ]; + if ( Array.isArray( value ) ) { + easing = value[ 1 ]; + value = props[ index ] = value[ 0 ]; + } + + if ( index !== name ) { + props[ name ] = value; + delete props[ index ]; + } + + hooks = jQuery.cssHooks[ name ]; + if ( hooks && "expand" in hooks ) { + value = hooks.expand( value ); + delete props[ name ]; + + // Not quite $.extend, this won't overwrite existing keys. + // Reusing 'index' because we have the correct "name" + for ( index in value ) { + if ( !( index in props ) ) { + props[ index ] = value[ index ]; + specialEasing[ index ] = easing; + } + } + } else { + specialEasing[ name ] = easing; + } + } +} + +function Animation( elem, properties, options ) { + var result, + stopped, + index = 0, + length = Animation.prefilters.length, + deferred = jQuery.Deferred().always( function() { + + // Don't match elem in the :animated selector + delete tick.elem; + } ), + tick = function() { + if ( stopped ) { + return false; + } + var currentTime = fxNow || createFxNow(), + remaining = Math.max( 0, animation.startTime + animation.duration - currentTime ), + + // Support: Android 2.3 only + // Archaic crash bug won't allow us to use `1 - ( 0.5 || 0 )` (#12497) + temp = remaining / animation.duration || 0, + percent = 1 - temp, + index = 0, + length = animation.tweens.length; + + for ( ; index < length; index++ ) { + animation.tweens[ index ].run( percent ); + } + + deferred.notifyWith( elem, [ animation, percent, remaining ] ); + + // If there's more to do, yield + if ( percent < 1 && length ) { + return remaining; + } + + // If this was an empty animation, synthesize a final progress notification + if ( !length ) { + deferred.notifyWith( elem, [ animation, 1, 0 ] ); + } + + // Resolve the animation and report its conclusion + deferred.resolveWith( elem, [ animation ] ); + return false; + }, + animation = deferred.promise( { + elem: elem, + props: jQuery.extend( {}, properties ), + opts: jQuery.extend( true, { + specialEasing: {}, + easing: jQuery.easing._default + }, options ), + originalProperties: properties, + originalOptions: options, + startTime: fxNow || createFxNow(), + duration: options.duration, + tweens: [], + createTween: function( prop, end ) { + var tween = jQuery.Tween( elem, animation.opts, prop, end, + animation.opts.specialEasing[ prop ] || animation.opts.easing ); + animation.tweens.push( tween ); + return tween; + }, + stop: function( gotoEnd ) { + var index = 0, + + // If we are going to the end, we want to run all the tweens + // otherwise we skip this part + length = gotoEnd ? animation.tweens.length : 0; + if ( stopped ) { + return this; + } + stopped = true; + for ( ; index < length; index++ ) { + animation.tweens[ index ].run( 1 ); + } + + // Resolve when we played the last frame; otherwise, reject + if ( gotoEnd ) { + deferred.notifyWith( elem, [ animation, 1, 0 ] ); + deferred.resolveWith( elem, [ animation, gotoEnd ] ); + } else { + deferred.rejectWith( elem, [ animation, gotoEnd ] ); + } + return this; + } + } ), + props = animation.props; + + propFilter( props, animation.opts.specialEasing ); + + for ( ; index < length; index++ ) { + result = Animation.prefilters[ index ].call( animation, elem, props, animation.opts ); + if ( result ) { + if ( isFunction( result.stop ) ) { + jQuery._queueHooks( animation.elem, animation.opts.queue ).stop = + result.stop.bind( result ); + } + return result; + } + } + + jQuery.map( props, createTween, animation ); + + if ( isFunction( animation.opts.start ) ) { + animation.opts.start.call( elem, animation ); + } + + // Attach callbacks from options + animation + .progress( animation.opts.progress ) + .done( animation.opts.done, animation.opts.complete ) + .fail( animation.opts.fail ) + .always( animation.opts.always ); + + jQuery.fx.timer( + jQuery.extend( tick, { + elem: elem, + anim: animation, + queue: animation.opts.queue + } ) + ); + + return animation; +} + +jQuery.Animation = jQuery.extend( Animation, { + + tweeners: { + "*": [ function( prop, value ) { + var tween = this.createTween( prop, value ); + adjustCSS( tween.elem, prop, rcssNum.exec( value ), tween ); + return tween; + } ] + }, + + tweener: function( props, callback ) { + if ( isFunction( props ) ) { + callback = props; + props = [ "*" ]; + } else { + props = props.match( rnothtmlwhite ); + } + + var prop, + index = 0, + length = props.length; + + for ( ; index < length; index++ ) { + prop = props[ index ]; + Animation.tweeners[ prop ] = Animation.tweeners[ prop ] || []; + Animation.tweeners[ prop ].unshift( callback ); + } + }, + + prefilters: [ defaultPrefilter ], + + prefilter: function( callback, prepend ) { + if ( prepend ) { + Animation.prefilters.unshift( callback ); + } else { + Animation.prefilters.push( callback ); + } + } +} ); + +jQuery.speed = function( speed, easing, fn ) { + var opt = speed && typeof speed === "object" ? jQuery.extend( {}, speed ) : { + complete: fn || !fn && easing || + isFunction( speed ) && speed, + duration: speed, + easing: fn && easing || easing && !isFunction( easing ) && easing + }; + + // Go to the end state if fx are off + if ( jQuery.fx.off ) { + opt.duration = 0; + + } else { + if ( typeof opt.duration !== "number" ) { + if ( opt.duration in jQuery.fx.speeds ) { + opt.duration = jQuery.fx.speeds[ opt.duration ]; + + } else { + opt.duration = jQuery.fx.speeds._default; + } + } + } + + // Normalize opt.queue - true/undefined/null -> "fx" + if ( opt.queue == null || opt.queue === true ) { + opt.queue = "fx"; + } + + // Queueing + opt.old = opt.complete; + + opt.complete = function() { + if ( isFunction( opt.old ) ) { + opt.old.call( this ); + } + + if ( opt.queue ) { + jQuery.dequeue( this, opt.queue ); + } + }; + + return opt; +}; + +jQuery.fn.extend( { + fadeTo: function( speed, to, easing, callback ) { + + // Show any hidden elements after setting opacity to 0 + return this.filter( isHiddenWithinTree ).css( "opacity", 0 ).show() + + // Animate to the value specified + .end().animate( { opacity: to }, speed, easing, callback ); + }, + animate: function( prop, speed, easing, callback ) { + var empty = jQuery.isEmptyObject( prop ), + optall = jQuery.speed( speed, easing, callback ), + doAnimation = function() { + + // Operate on a copy of prop so per-property easing won't be lost + var anim = Animation( this, jQuery.extend( {}, prop ), optall ); + + // Empty animations, or finishing resolves immediately + if ( empty || dataPriv.get( this, "finish" ) ) { + anim.stop( true ); + } + }; + doAnimation.finish = doAnimation; + + return empty || optall.queue === false ? + this.each( doAnimation ) : + this.queue( optall.queue, doAnimation ); + }, + stop: function( type, clearQueue, gotoEnd ) { + var stopQueue = function( hooks ) { + var stop = hooks.stop; + delete hooks.stop; + stop( gotoEnd ); + }; + + if ( typeof type !== "string" ) { + gotoEnd = clearQueue; + clearQueue = type; + type = undefined; + } + if ( clearQueue && type !== false ) { + this.queue( type || "fx", [] ); + } + + return this.each( function() { + var dequeue = true, + index = type != null && type + "queueHooks", + timers = jQuery.timers, + data = dataPriv.get( this ); + + if ( index ) { + if ( data[ index ] && data[ index ].stop ) { + stopQueue( data[ index ] ); + } + } else { + for ( index in data ) { + if ( data[ index ] && data[ index ].stop && rrun.test( index ) ) { + stopQueue( data[ index ] ); + } + } + } + + for ( index = timers.length; index--; ) { + if ( timers[ index ].elem === this && + ( type == null || timers[ index ].queue === type ) ) { + + timers[ index ].anim.stop( gotoEnd ); + dequeue = false; + timers.splice( index, 1 ); + } + } + + // Start the next in the queue if the last step wasn't forced. + // Timers currently will call their complete callbacks, which + // will dequeue but only if they were gotoEnd. + if ( dequeue || !gotoEnd ) { + jQuery.dequeue( this, type ); + } + } ); + }, + finish: function( type ) { + if ( type !== false ) { + type = type || "fx"; + } + return this.each( function() { + var index, + data = dataPriv.get( this ), + queue = data[ type + "queue" ], + hooks = data[ type + "queueHooks" ], + timers = jQuery.timers, + length = queue ? queue.length : 0; + + // Enable finishing flag on private data + data.finish = true; + + // Empty the queue first + jQuery.queue( this, type, [] ); + + if ( hooks && hooks.stop ) { + hooks.stop.call( this, true ); + } + + // Look for any active animations, and finish them + for ( index = timers.length; index--; ) { + if ( timers[ index ].elem === this && timers[ index ].queue === type ) { + timers[ index ].anim.stop( true ); + timers.splice( index, 1 ); + } + } + + // Look for any animations in the old queue and finish them + for ( index = 0; index < length; index++ ) { + if ( queue[ index ] && queue[ index ].finish ) { + queue[ index ].finish.call( this ); + } + } + + // Turn off finishing flag + delete data.finish; + } ); + } +} ); + +jQuery.each( [ "toggle", "show", "hide" ], function( i, name ) { + var cssFn = jQuery.fn[ name ]; + jQuery.fn[ name ] = function( speed, easing, callback ) { + return speed == null || typeof speed === "boolean" ? + cssFn.apply( this, arguments ) : + this.animate( genFx( name, true ), speed, easing, callback ); + }; +} ); + +// Generate shortcuts for custom animations +jQuery.each( { + slideDown: genFx( "show" ), + slideUp: genFx( "hide" ), + slideToggle: genFx( "toggle" ), + fadeIn: { opacity: "show" }, + fadeOut: { opacity: "hide" }, + fadeToggle: { opacity: "toggle" } +}, function( name, props ) { + jQuery.fn[ name ] = function( speed, easing, callback ) { + return this.animate( props, speed, easing, callback ); + }; +} ); + +jQuery.timers = []; +jQuery.fx.tick = function() { + var timer, + i = 0, + timers = jQuery.timers; + + fxNow = Date.now(); + + for ( ; i < timers.length; i++ ) { + timer = timers[ i ]; + + // Run the timer and safely remove it when done (allowing for external removal) + if ( !timer() && timers[ i ] === timer ) { + timers.splice( i--, 1 ); + } + } + + if ( !timers.length ) { + jQuery.fx.stop(); + } + fxNow = undefined; +}; + +jQuery.fx.timer = function( timer ) { + jQuery.timers.push( timer ); + jQuery.fx.start(); +}; + +jQuery.fx.interval = 13; +jQuery.fx.start = function() { + if ( inProgress ) { + return; + } + + inProgress = true; + schedule(); +}; + +jQuery.fx.stop = function() { + inProgress = null; +}; + +jQuery.fx.speeds = { + slow: 600, + fast: 200, + + // Default speed + _default: 400 +}; + + +// Based off of the plugin by Clint Helfers, with permission. +// https://web.archive.org/web/20100324014747/http://blindsignals.com/index.php/2009/07/jquery-delay/ +jQuery.fn.delay = function( time, type ) { + time = jQuery.fx ? jQuery.fx.speeds[ time ] || time : time; + type = type || "fx"; + + return this.queue( type, function( next, hooks ) { + var timeout = window.setTimeout( next, time ); + hooks.stop = function() { + window.clearTimeout( timeout ); + }; + } ); +}; + + +( function() { + var input = document.createElement( "input" ), + select = document.createElement( "select" ), + opt = select.appendChild( document.createElement( "option" ) ); + + input.type = "checkbox"; + + // Support: Android <=4.3 only + // Default value for a checkbox should be "on" + support.checkOn = input.value !== ""; + + // Support: IE <=11 only + // Must access selectedIndex to make default options select + support.optSelected = opt.selected; + + // Support: IE <=11 only + // An input loses its value after becoming a radio + input = document.createElement( "input" ); + input.value = "t"; + input.type = "radio"; + support.radioValue = input.value === "t"; +} )(); + + +var boolHook, + attrHandle = jQuery.expr.attrHandle; + +jQuery.fn.extend( { + attr: function( name, value ) { + return access( this, jQuery.attr, name, value, arguments.length > 1 ); + }, + + removeAttr: function( name ) { + return this.each( function() { + jQuery.removeAttr( this, name ); + } ); + } +} ); + +jQuery.extend( { + attr: function( elem, name, value ) { + var ret, hooks, + nType = elem.nodeType; + + // Don't get/set attributes on text, comment and attribute nodes + if ( nType === 3 || nType === 8 || nType === 2 ) { + return; + } + + // Fallback to prop when attributes are not supported + if ( typeof elem.getAttribute === "undefined" ) { + return jQuery.prop( elem, name, value ); + } + + // Attribute hooks are determined by the lowercase version + // Grab necessary hook if one is defined + if ( nType !== 1 || !jQuery.isXMLDoc( elem ) ) { + hooks = jQuery.attrHooks[ name.toLowerCase() ] || + ( jQuery.expr.match.bool.test( name ) ? boolHook : undefined ); + } + + if ( value !== undefined ) { + if ( value === null ) { + jQuery.removeAttr( elem, name ); + return; + } + + if ( hooks && "set" in hooks && + ( ret = hooks.set( elem, value, name ) ) !== undefined ) { + return ret; + } + + elem.setAttribute( name, value + "" ); + return value; + } + + if ( hooks && "get" in hooks && ( ret = hooks.get( elem, name ) ) !== null ) { + return ret; + } + + ret = jQuery.find.attr( elem, name ); + + // Non-existent attributes return null, we normalize to undefined + return ret == null ? undefined : ret; + }, + + attrHooks: { + type: { + set: function( elem, value ) { + if ( !support.radioValue && value === "radio" && + nodeName( elem, "input" ) ) { + var val = elem.value; + elem.setAttribute( "type", value ); + if ( val ) { + elem.value = val; + } + return value; + } + } + } + }, + + removeAttr: function( elem, value ) { + var name, + i = 0, + + // Attribute names can contain non-HTML whitespace characters + // https://html.spec.whatwg.org/multipage/syntax.html#attributes-2 + attrNames = value && value.match( rnothtmlwhite ); + + if ( attrNames && elem.nodeType === 1 ) { + while ( ( name = attrNames[ i++ ] ) ) { + elem.removeAttribute( name ); + } + } + } +} ); + +// Hooks for boolean attributes +boolHook = { + set: function( elem, value, name ) { + if ( value === false ) { + + // Remove boolean attributes when set to false + jQuery.removeAttr( elem, name ); + } else { + elem.setAttribute( name, name ); + } + return name; + } +}; + +jQuery.each( jQuery.expr.match.bool.source.match( /\w+/g ), function( i, name ) { + var getter = attrHandle[ name ] || jQuery.find.attr; + + attrHandle[ name ] = function( elem, name, isXML ) { + var ret, handle, + lowercaseName = name.toLowerCase(); + + if ( !isXML ) { + + // Avoid an infinite loop by temporarily removing this function from the getter + handle = attrHandle[ lowercaseName ]; + attrHandle[ lowercaseName ] = ret; + ret = getter( elem, name, isXML ) != null ? + lowercaseName : + null; + attrHandle[ lowercaseName ] = handle; + } + return ret; + }; +} ); + + + + +var rfocusable = /^(?:input|select|textarea|button)$/i, + rclickable = /^(?:a|area)$/i; + +jQuery.fn.extend( { + prop: function( name, value ) { + return access( this, jQuery.prop, name, value, arguments.length > 1 ); + }, + + removeProp: function( name ) { + return this.each( function() { + delete this[ jQuery.propFix[ name ] || name ]; + } ); + } +} ); + +jQuery.extend( { + prop: function( elem, name, value ) { + var ret, hooks, + nType = elem.nodeType; + + // Don't get/set properties on text, comment and attribute nodes + if ( nType === 3 || nType === 8 || nType === 2 ) { + return; + } + + if ( nType !== 1 || !jQuery.isXMLDoc( elem ) ) { + + // Fix name and attach hooks + name = jQuery.propFix[ name ] || name; + hooks = jQuery.propHooks[ name ]; + } + + if ( value !== undefined ) { + if ( hooks && "set" in hooks && + ( ret = hooks.set( elem, value, name ) ) !== undefined ) { + return ret; + } + + return ( elem[ name ] = value ); + } + + if ( hooks && "get" in hooks && ( ret = hooks.get( elem, name ) ) !== null ) { + return ret; + } + + return elem[ name ]; + }, + + propHooks: { + tabIndex: { + get: function( elem ) { + + // Support: IE <=9 - 11 only + // elem.tabIndex doesn't always return the + // correct value when it hasn't been explicitly set + // https://web.archive.org/web/20141116233347/http://fluidproject.org/blog/2008/01/09/getting-setting-and-removing-tabindex-values-with-javascript/ + // Use proper attribute retrieval(#12072) + var tabindex = jQuery.find.attr( elem, "tabindex" ); + + if ( tabindex ) { + return parseInt( tabindex, 10 ); + } + + if ( + rfocusable.test( elem.nodeName ) || + rclickable.test( elem.nodeName ) && + elem.href + ) { + return 0; + } + + return -1; + } + } + }, + + propFix: { + "for": "htmlFor", + "class": "className" + } +} ); + +// Support: IE <=11 only +// Accessing the selectedIndex property +// forces the browser to respect setting selected +// on the option +// The getter ensures a default option is selected +// when in an optgroup +// eslint rule "no-unused-expressions" is disabled for this code +// since it considers such accessions noop +if ( !support.optSelected ) { + jQuery.propHooks.selected = { + get: function( elem ) { + + /* eslint no-unused-expressions: "off" */ + + var parent = elem.parentNode; + if ( parent && parent.parentNode ) { + parent.parentNode.selectedIndex; + } + return null; + }, + set: function( elem ) { + + /* eslint no-unused-expressions: "off" */ + + var parent = elem.parentNode; + if ( parent ) { + parent.selectedIndex; + + if ( parent.parentNode ) { + parent.parentNode.selectedIndex; + } + } + } + }; +} + +jQuery.each( [ + "tabIndex", + "readOnly", + "maxLength", + "cellSpacing", + "cellPadding", + "rowSpan", + "colSpan", + "useMap", + "frameBorder", + "contentEditable" +], function() { + jQuery.propFix[ this.toLowerCase() ] = this; +} ); + + + + + // Strip and collapse whitespace according to HTML spec + // https://infra.spec.whatwg.org/#strip-and-collapse-ascii-whitespace + function stripAndCollapse( value ) { + var tokens = value.match( rnothtmlwhite ) || []; + return tokens.join( " " ); + } + + +function getClass( elem ) { + return elem.getAttribute && elem.getAttribute( "class" ) || ""; +} + +function classesToArray( value ) { + if ( Array.isArray( value ) ) { + return value; + } + if ( typeof value === "string" ) { + return value.match( rnothtmlwhite ) || []; + } + return []; +} + +jQuery.fn.extend( { + addClass: function( value ) { + var classes, elem, cur, curValue, clazz, j, finalValue, + i = 0; + + if ( isFunction( value ) ) { + return this.each( function( j ) { + jQuery( this ).addClass( value.call( this, j, getClass( this ) ) ); + } ); + } + + classes = classesToArray( value ); + + if ( classes.length ) { + while ( ( elem = this[ i++ ] ) ) { + curValue = getClass( elem ); + cur = elem.nodeType === 1 && ( " " + stripAndCollapse( curValue ) + " " ); + + if ( cur ) { + j = 0; + while ( ( clazz = classes[ j++ ] ) ) { + if ( cur.indexOf( " " + clazz + " " ) < 0 ) { + cur += clazz + " "; + } + } + + // Only assign if different to avoid unneeded rendering. + finalValue = stripAndCollapse( cur ); + if ( curValue !== finalValue ) { + elem.setAttribute( "class", finalValue ); + } + } + } + } + + return this; + }, + + removeClass: function( value ) { + var classes, elem, cur, curValue, clazz, j, finalValue, + i = 0; + + if ( isFunction( value ) ) { + return this.each( function( j ) { + jQuery( this ).removeClass( value.call( this, j, getClass( this ) ) ); + } ); + } + + if ( !arguments.length ) { + return this.attr( "class", "" ); + } + + classes = classesToArray( value ); + + if ( classes.length ) { + while ( ( elem = this[ i++ ] ) ) { + curValue = getClass( elem ); + + // This expression is here for better compressibility (see addClass) + cur = elem.nodeType === 1 && ( " " + stripAndCollapse( curValue ) + " " ); + + if ( cur ) { + j = 0; + while ( ( clazz = classes[ j++ ] ) ) { + + // Remove *all* instances + while ( cur.indexOf( " " + clazz + " " ) > -1 ) { + cur = cur.replace( " " + clazz + " ", " " ); + } + } + + // Only assign if different to avoid unneeded rendering. + finalValue = stripAndCollapse( cur ); + if ( curValue !== finalValue ) { + elem.setAttribute( "class", finalValue ); + } + } + } + } + + return this; + }, + + toggleClass: function( value, stateVal ) { + var type = typeof value, + isValidValue = type === "string" || Array.isArray( value ); + + if ( typeof stateVal === "boolean" && isValidValue ) { + return stateVal ? this.addClass( value ) : this.removeClass( value ); + } + + if ( isFunction( value ) ) { + return this.each( function( i ) { + jQuery( this ).toggleClass( + value.call( this, i, getClass( this ), stateVal ), + stateVal + ); + } ); + } + + return this.each( function() { + var className, i, self, classNames; + + if ( isValidValue ) { + + // Toggle individual class names + i = 0; + self = jQuery( this ); + classNames = classesToArray( value ); + + while ( ( className = classNames[ i++ ] ) ) { + + // Check each className given, space separated list + if ( self.hasClass( className ) ) { + self.removeClass( className ); + } else { + self.addClass( className ); + } + } + + // Toggle whole class name + } else if ( value === undefined || type === "boolean" ) { + className = getClass( this ); + if ( className ) { + + // Store className if set + dataPriv.set( this, "__className__", className ); + } + + // If the element has a class name or if we're passed `false`, + // then remove the whole classname (if there was one, the above saved it). + // Otherwise bring back whatever was previously saved (if anything), + // falling back to the empty string if nothing was stored. + if ( this.setAttribute ) { + this.setAttribute( "class", + className || value === false ? + "" : + dataPriv.get( this, "__className__" ) || "" + ); + } + } + } ); + }, + + hasClass: function( selector ) { + var className, elem, + i = 0; + + className = " " + selector + " "; + while ( ( elem = this[ i++ ] ) ) { + if ( elem.nodeType === 1 && + ( " " + stripAndCollapse( getClass( elem ) ) + " " ).indexOf( className ) > -1 ) { + return true; + } + } + + return false; + } +} ); + + + + +var rreturn = /\r/g; + +jQuery.fn.extend( { + val: function( value ) { + var hooks, ret, valueIsFunction, + elem = this[ 0 ]; + + if ( !arguments.length ) { + if ( elem ) { + hooks = jQuery.valHooks[ elem.type ] || + jQuery.valHooks[ elem.nodeName.toLowerCase() ]; + + if ( hooks && + "get" in hooks && + ( ret = hooks.get( elem, "value" ) ) !== undefined + ) { + return ret; + } + + ret = elem.value; + + // Handle most common string cases + if ( typeof ret === "string" ) { + return ret.replace( rreturn, "" ); + } + + // Handle cases where value is null/undef or number + return ret == null ? "" : ret; + } + + return; + } + + valueIsFunction = isFunction( value ); + + return this.each( function( i ) { + var val; + + if ( this.nodeType !== 1 ) { + return; + } + + if ( valueIsFunction ) { + val = value.call( this, i, jQuery( this ).val() ); + } else { + val = value; + } + + // Treat null/undefined as ""; convert numbers to string + if ( val == null ) { + val = ""; + + } else if ( typeof val === "number" ) { + val += ""; + + } else if ( Array.isArray( val ) ) { + val = jQuery.map( val, function( value ) { + return value == null ? "" : value + ""; + } ); + } + + hooks = jQuery.valHooks[ this.type ] || jQuery.valHooks[ this.nodeName.toLowerCase() ]; + + // If set returns undefined, fall back to normal setting + if ( !hooks || !( "set" in hooks ) || hooks.set( this, val, "value" ) === undefined ) { + this.value = val; + } + } ); + } +} ); + +jQuery.extend( { + valHooks: { + option: { + get: function( elem ) { + + var val = jQuery.find.attr( elem, "value" ); + return val != null ? + val : + + // Support: IE <=10 - 11 only + // option.text throws exceptions (#14686, #14858) + // Strip and collapse whitespace + // https://html.spec.whatwg.org/#strip-and-collapse-whitespace + stripAndCollapse( jQuery.text( elem ) ); + } + }, + select: { + get: function( elem ) { + var value, option, i, + options = elem.options, + index = elem.selectedIndex, + one = elem.type === "select-one", + values = one ? null : [], + max = one ? index + 1 : options.length; + + if ( index < 0 ) { + i = max; + + } else { + i = one ? index : 0; + } + + // Loop through all the selected options + for ( ; i < max; i++ ) { + option = options[ i ]; + + // Support: IE <=9 only + // IE8-9 doesn't update selected after form reset (#2551) + if ( ( option.selected || i === index ) && + + // Don't return options that are disabled or in a disabled optgroup + !option.disabled && + ( !option.parentNode.disabled || + !nodeName( option.parentNode, "optgroup" ) ) ) { + + // Get the specific value for the option + value = jQuery( option ).val(); + + // We don't need an array for one selects + if ( one ) { + return value; + } + + // Multi-Selects return an array + values.push( value ); + } + } + + return values; + }, + + set: function( elem, value ) { + var optionSet, option, + options = elem.options, + values = jQuery.makeArray( value ), + i = options.length; + + while ( i-- ) { + option = options[ i ]; + + /* eslint-disable no-cond-assign */ + + if ( option.selected = + jQuery.inArray( jQuery.valHooks.option.get( option ), values ) > -1 + ) { + optionSet = true; + } + + /* eslint-enable no-cond-assign */ + } + + // Force browsers to behave consistently when non-matching value is set + if ( !optionSet ) { + elem.selectedIndex = -1; + } + return values; + } + } + } +} ); + +// Radios and checkboxes getter/setter +jQuery.each( [ "radio", "checkbox" ], function() { + jQuery.valHooks[ this ] = { + set: function( elem, value ) { + if ( Array.isArray( value ) ) { + return ( elem.checked = jQuery.inArray( jQuery( elem ).val(), value ) > -1 ); + } + } + }; + if ( !support.checkOn ) { + jQuery.valHooks[ this ].get = function( elem ) { + return elem.getAttribute( "value" ) === null ? "on" : elem.value; + }; + } +} ); + + + + +// Return jQuery for attributes-only inclusion + + +support.focusin = "onfocusin" in window; + + +var rfocusMorph = /^(?:focusinfocus|focusoutblur)$/, + stopPropagationCallback = function( e ) { + e.stopPropagation(); + }; + +jQuery.extend( jQuery.event, { + + trigger: function( event, data, elem, onlyHandlers ) { + + var i, cur, tmp, bubbleType, ontype, handle, special, lastElement, + eventPath = [ elem || document ], + type = hasOwn.call( event, "type" ) ? event.type : event, + namespaces = hasOwn.call( event, "namespace" ) ? event.namespace.split( "." ) : []; + + cur = lastElement = tmp = elem = elem || document; + + // Don't do events on text and comment nodes + if ( elem.nodeType === 3 || elem.nodeType === 8 ) { + return; + } + + // focus/blur morphs to focusin/out; ensure we're not firing them right now + if ( rfocusMorph.test( type + jQuery.event.triggered ) ) { + return; + } + + if ( type.indexOf( "." ) > -1 ) { + + // Namespaced trigger; create a regexp to match event type in handle() + namespaces = type.split( "." ); + type = namespaces.shift(); + namespaces.sort(); + } + ontype = type.indexOf( ":" ) < 0 && "on" + type; + + // Caller can pass in a jQuery.Event object, Object, or just an event type string + event = event[ jQuery.expando ] ? + event : + new jQuery.Event( type, typeof event === "object" && event ); + + // Trigger bitmask: & 1 for native handlers; & 2 for jQuery (always true) + event.isTrigger = onlyHandlers ? 2 : 3; + event.namespace = namespaces.join( "." ); + event.rnamespace = event.namespace ? + new RegExp( "(^|\\.)" + namespaces.join( "\\.(?:.*\\.|)" ) + "(\\.|$)" ) : + null; + + // Clean up the event in case it is being reused + event.result = undefined; + if ( !event.target ) { + event.target = elem; + } + + // Clone any incoming data and prepend the event, creating the handler arg list + data = data == null ? + [ event ] : + jQuery.makeArray( data, [ event ] ); + + // Allow special events to draw outside the lines + special = jQuery.event.special[ type ] || {}; + if ( !onlyHandlers && special.trigger && special.trigger.apply( elem, data ) === false ) { + return; + } + + // Determine event propagation path in advance, per W3C events spec (#9951) + // Bubble up to document, then to window; watch for a global ownerDocument var (#9724) + if ( !onlyHandlers && !special.noBubble && !isWindow( elem ) ) { + + bubbleType = special.delegateType || type; + if ( !rfocusMorph.test( bubbleType + type ) ) { + cur = cur.parentNode; + } + for ( ; cur; cur = cur.parentNode ) { + eventPath.push( cur ); + tmp = cur; + } + + // Only add window if we got to document (e.g., not plain obj or detached DOM) + if ( tmp === ( elem.ownerDocument || document ) ) { + eventPath.push( tmp.defaultView || tmp.parentWindow || window ); + } + } + + // Fire handlers on the event path + i = 0; + while ( ( cur = eventPath[ i++ ] ) && !event.isPropagationStopped() ) { + lastElement = cur; + event.type = i > 1 ? + bubbleType : + special.bindType || type; + + // jQuery handler + handle = ( dataPriv.get( cur, "events" ) || {} )[ event.type ] && + dataPriv.get( cur, "handle" ); + if ( handle ) { + handle.apply( cur, data ); + } + + // Native handler + handle = ontype && cur[ ontype ]; + if ( handle && handle.apply && acceptData( cur ) ) { + event.result = handle.apply( cur, data ); + if ( event.result === false ) { + event.preventDefault(); + } + } + } + event.type = type; + + // If nobody prevented the default action, do it now + if ( !onlyHandlers && !event.isDefaultPrevented() ) { + + if ( ( !special._default || + special._default.apply( eventPath.pop(), data ) === false ) && + acceptData( elem ) ) { + + // Call a native DOM method on the target with the same name as the event. + // Don't do default actions on window, that's where global variables be (#6170) + if ( ontype && isFunction( elem[ type ] ) && !isWindow( elem ) ) { + + // Don't re-trigger an onFOO event when we call its FOO() method + tmp = elem[ ontype ]; + + if ( tmp ) { + elem[ ontype ] = null; + } + + // Prevent re-triggering of the same event, since we already bubbled it above + jQuery.event.triggered = type; + + if ( event.isPropagationStopped() ) { + lastElement.addEventListener( type, stopPropagationCallback ); + } + + elem[ type ](); + + if ( event.isPropagationStopped() ) { + lastElement.removeEventListener( type, stopPropagationCallback ); + } + + jQuery.event.triggered = undefined; + + if ( tmp ) { + elem[ ontype ] = tmp; + } + } + } + } + + return event.result; + }, + + // Piggyback on a donor event to simulate a different one + // Used only for `focus(in | out)` events + simulate: function( type, elem, event ) { + var e = jQuery.extend( + new jQuery.Event(), + event, + { + type: type, + isSimulated: true + } + ); + + jQuery.event.trigger( e, null, elem ); + } + +} ); + +jQuery.fn.extend( { + + trigger: function( type, data ) { + return this.each( function() { + jQuery.event.trigger( type, data, this ); + } ); + }, + triggerHandler: function( type, data ) { + var elem = this[ 0 ]; + if ( elem ) { + return jQuery.event.trigger( type, data, elem, true ); + } + } +} ); + + +// Support: Firefox <=44 +// Firefox doesn't have focus(in | out) events +// Related ticket - https://bugzilla.mozilla.org/show_bug.cgi?id=687787 +// +// Support: Chrome <=48 - 49, Safari <=9.0 - 9.1 +// focus(in | out) events fire after focus & blur events, +// which is spec violation - http://www.w3.org/TR/DOM-Level-3-Events/#events-focusevent-event-order +// Related ticket - https://bugs.chromium.org/p/chromium/issues/detail?id=449857 +if ( !support.focusin ) { + jQuery.each( { focus: "focusin", blur: "focusout" }, function( orig, fix ) { + + // Attach a single capturing handler on the document while someone wants focusin/focusout + var handler = function( event ) { + jQuery.event.simulate( fix, event.target, jQuery.event.fix( event ) ); + }; + + jQuery.event.special[ fix ] = { + setup: function() { + var doc = this.ownerDocument || this, + attaches = dataPriv.access( doc, fix ); + + if ( !attaches ) { + doc.addEventListener( orig, handler, true ); + } + dataPriv.access( doc, fix, ( attaches || 0 ) + 1 ); + }, + teardown: function() { + var doc = this.ownerDocument || this, + attaches = dataPriv.access( doc, fix ) - 1; + + if ( !attaches ) { + doc.removeEventListener( orig, handler, true ); + dataPriv.remove( doc, fix ); + + } else { + dataPriv.access( doc, fix, attaches ); + } + } + }; + } ); +} +var location = window.location; + +var nonce = Date.now(); + +var rquery = ( /\?/ ); + + + +// Cross-browser xml parsing +jQuery.parseXML = function( data ) { + var xml; + if ( !data || typeof data !== "string" ) { + return null; + } + + // Support: IE 9 - 11 only + // IE throws on parseFromString with invalid input. + try { + xml = ( new window.DOMParser() ).parseFromString( data, "text/xml" ); + } catch ( e ) { + xml = undefined; + } + + if ( !xml || xml.getElementsByTagName( "parsererror" ).length ) { + jQuery.error( "Invalid XML: " + data ); + } + return xml; +}; + + +var + rbracket = /\[\]$/, + rCRLF = /\r?\n/g, + rsubmitterTypes = /^(?:submit|button|image|reset|file)$/i, + rsubmittable = /^(?:input|select|textarea|keygen)/i; + +function buildParams( prefix, obj, traditional, add ) { + var name; + + if ( Array.isArray( obj ) ) { + + // Serialize array item. + jQuery.each( obj, function( i, v ) { + if ( traditional || rbracket.test( prefix ) ) { + + // Treat each array item as a scalar. + add( prefix, v ); + + } else { + + // Item is non-scalar (array or object), encode its numeric index. + buildParams( + prefix + "[" + ( typeof v === "object" && v != null ? i : "" ) + "]", + v, + traditional, + add + ); + } + } ); + + } else if ( !traditional && toType( obj ) === "object" ) { + + // Serialize object item. + for ( name in obj ) { + buildParams( prefix + "[" + name + "]", obj[ name ], traditional, add ); + } + + } else { + + // Serialize scalar item. + add( prefix, obj ); + } +} + +// Serialize an array of form elements or a set of +// key/values into a query string +jQuery.param = function( a, traditional ) { + var prefix, + s = [], + add = function( key, valueOrFunction ) { + + // If value is a function, invoke it and use its return value + var value = isFunction( valueOrFunction ) ? + valueOrFunction() : + valueOrFunction; + + s[ s.length ] = encodeURIComponent( key ) + "=" + + encodeURIComponent( value == null ? "" : value ); + }; + + if ( a == null ) { + return ""; + } + + // If an array was passed in, assume that it is an array of form elements. + if ( Array.isArray( a ) || ( a.jquery && !jQuery.isPlainObject( a ) ) ) { + + // Serialize the form elements + jQuery.each( a, function() { + add( this.name, this.value ); + } ); + + } else { + + // If traditional, encode the "old" way (the way 1.3.2 or older + // did it), otherwise encode params recursively. + for ( prefix in a ) { + buildParams( prefix, a[ prefix ], traditional, add ); + } + } + + // Return the resulting serialization + return s.join( "&" ); +}; + +jQuery.fn.extend( { + serialize: function() { + return jQuery.param( this.serializeArray() ); + }, + serializeArray: function() { + return this.map( function() { + + // Can add propHook for "elements" to filter or add form elements + var elements = jQuery.prop( this, "elements" ); + return elements ? jQuery.makeArray( elements ) : this; + } ) + .filter( function() { + var type = this.type; + + // Use .is( ":disabled" ) so that fieldset[disabled] works + return this.name && !jQuery( this ).is( ":disabled" ) && + rsubmittable.test( this.nodeName ) && !rsubmitterTypes.test( type ) && + ( this.checked || !rcheckableType.test( type ) ); + } ) + .map( function( i, elem ) { + var val = jQuery( this ).val(); + + if ( val == null ) { + return null; + } + + if ( Array.isArray( val ) ) { + return jQuery.map( val, function( val ) { + return { name: elem.name, value: val.replace( rCRLF, "\r\n" ) }; + } ); + } + + return { name: elem.name, value: val.replace( rCRLF, "\r\n" ) }; + } ).get(); + } +} ); + + +var + r20 = /%20/g, + rhash = /#.*$/, + rantiCache = /([?&])_=[^&]*/, + rheaders = /^(.*?):[ \t]*([^\r\n]*)$/mg, + + // #7653, #8125, #8152: local protocol detection + rlocalProtocol = /^(?:about|app|app-storage|.+-extension|file|res|widget):$/, + rnoContent = /^(?:GET|HEAD)$/, + rprotocol = /^\/\//, + + /* Prefilters + * 1) They are useful to introduce custom dataTypes (see ajax/jsonp.js for an example) + * 2) These are called: + * - BEFORE asking for a transport + * - AFTER param serialization (s.data is a string if s.processData is true) + * 3) key is the dataType + * 4) the catchall symbol "*" can be used + * 5) execution will start with transport dataType and THEN continue down to "*" if needed + */ + prefilters = {}, + + /* Transports bindings + * 1) key is the dataType + * 2) the catchall symbol "*" can be used + * 3) selection will start with transport dataType and THEN go to "*" if needed + */ + transports = {}, + + // Avoid comment-prolog char sequence (#10098); must appease lint and evade compression + allTypes = "*/".concat( "*" ), + + // Anchor tag for parsing the document origin + originAnchor = document.createElement( "a" ); + originAnchor.href = location.href; + +// Base "constructor" for jQuery.ajaxPrefilter and jQuery.ajaxTransport +function addToPrefiltersOrTransports( structure ) { + + // dataTypeExpression is optional and defaults to "*" + return function( dataTypeExpression, func ) { + + if ( typeof dataTypeExpression !== "string" ) { + func = dataTypeExpression; + dataTypeExpression = "*"; + } + + var dataType, + i = 0, + dataTypes = dataTypeExpression.toLowerCase().match( rnothtmlwhite ) || []; + + if ( isFunction( func ) ) { + + // For each dataType in the dataTypeExpression + while ( ( dataType = dataTypes[ i++ ] ) ) { + + // Prepend if requested + if ( dataType[ 0 ] === "+" ) { + dataType = dataType.slice( 1 ) || "*"; + ( structure[ dataType ] = structure[ dataType ] || [] ).unshift( func ); + + // Otherwise append + } else { + ( structure[ dataType ] = structure[ dataType ] || [] ).push( func ); + } + } + } + }; +} + +// Base inspection function for prefilters and transports +function inspectPrefiltersOrTransports( structure, options, originalOptions, jqXHR ) { + + var inspected = {}, + seekingTransport = ( structure === transports ); + + function inspect( dataType ) { + var selected; + inspected[ dataType ] = true; + jQuery.each( structure[ dataType ] || [], function( _, prefilterOrFactory ) { + var dataTypeOrTransport = prefilterOrFactory( options, originalOptions, jqXHR ); + if ( typeof dataTypeOrTransport === "string" && + !seekingTransport && !inspected[ dataTypeOrTransport ] ) { + + options.dataTypes.unshift( dataTypeOrTransport ); + inspect( dataTypeOrTransport ); + return false; + } else if ( seekingTransport ) { + return !( selected = dataTypeOrTransport ); + } + } ); + return selected; + } + + return inspect( options.dataTypes[ 0 ] ) || !inspected[ "*" ] && inspect( "*" ); +} + +// A special extend for ajax options +// that takes "flat" options (not to be deep extended) +// Fixes #9887 +function ajaxExtend( target, src ) { + var key, deep, + flatOptions = jQuery.ajaxSettings.flatOptions || {}; + + for ( key in src ) { + if ( src[ key ] !== undefined ) { + ( flatOptions[ key ] ? target : ( deep || ( deep = {} ) ) )[ key ] = src[ key ]; + } + } + if ( deep ) { + jQuery.extend( true, target, deep ); + } + + return target; +} + +/* Handles responses to an ajax request: + * - finds the right dataType (mediates between content-type and expected dataType) + * - returns the corresponding response + */ +function ajaxHandleResponses( s, jqXHR, responses ) { + + var ct, type, finalDataType, firstDataType, + contents = s.contents, + dataTypes = s.dataTypes; + + // Remove auto dataType and get content-type in the process + while ( dataTypes[ 0 ] === "*" ) { + dataTypes.shift(); + if ( ct === undefined ) { + ct = s.mimeType || jqXHR.getResponseHeader( "Content-Type" ); + } + } + + // Check if we're dealing with a known content-type + if ( ct ) { + for ( type in contents ) { + if ( contents[ type ] && contents[ type ].test( ct ) ) { + dataTypes.unshift( type ); + break; + } + } + } + + // Check to see if we have a response for the expected dataType + if ( dataTypes[ 0 ] in responses ) { + finalDataType = dataTypes[ 0 ]; + } else { + + // Try convertible dataTypes + for ( type in responses ) { + if ( !dataTypes[ 0 ] || s.converters[ type + " " + dataTypes[ 0 ] ] ) { + finalDataType = type; + break; + } + if ( !firstDataType ) { + firstDataType = type; + } + } + + // Or just use first one + finalDataType = finalDataType || firstDataType; + } + + // If we found a dataType + // We add the dataType to the list if needed + // and return the corresponding response + if ( finalDataType ) { + if ( finalDataType !== dataTypes[ 0 ] ) { + dataTypes.unshift( finalDataType ); + } + return responses[ finalDataType ]; + } +} + +/* Chain conversions given the request and the original response + * Also sets the responseXXX fields on the jqXHR instance + */ +function ajaxConvert( s, response, jqXHR, isSuccess ) { + var conv2, current, conv, tmp, prev, + converters = {}, + + // Work with a copy of dataTypes in case we need to modify it for conversion + dataTypes = s.dataTypes.slice(); + + // Create converters map with lowercased keys + if ( dataTypes[ 1 ] ) { + for ( conv in s.converters ) { + converters[ conv.toLowerCase() ] = s.converters[ conv ]; + } + } + + current = dataTypes.shift(); + + // Convert to each sequential dataType + while ( current ) { + + if ( s.responseFields[ current ] ) { + jqXHR[ s.responseFields[ current ] ] = response; + } + + // Apply the dataFilter if provided + if ( !prev && isSuccess && s.dataFilter ) { + response = s.dataFilter( response, s.dataType ); + } + + prev = current; + current = dataTypes.shift(); + + if ( current ) { + + // There's only work to do if current dataType is non-auto + if ( current === "*" ) { + + current = prev; + + // Convert response if prev dataType is non-auto and differs from current + } else if ( prev !== "*" && prev !== current ) { + + // Seek a direct converter + conv = converters[ prev + " " + current ] || converters[ "* " + current ]; + + // If none found, seek a pair + if ( !conv ) { + for ( conv2 in converters ) { + + // If conv2 outputs current + tmp = conv2.split( " " ); + if ( tmp[ 1 ] === current ) { + + // If prev can be converted to accepted input + conv = converters[ prev + " " + tmp[ 0 ] ] || + converters[ "* " + tmp[ 0 ] ]; + if ( conv ) { + + // Condense equivalence converters + if ( conv === true ) { + conv = converters[ conv2 ]; + + // Otherwise, insert the intermediate dataType + } else if ( converters[ conv2 ] !== true ) { + current = tmp[ 0 ]; + dataTypes.unshift( tmp[ 1 ] ); + } + break; + } + } + } + } + + // Apply converter (if not an equivalence) + if ( conv !== true ) { + + // Unless errors are allowed to bubble, catch and return them + if ( conv && s.throws ) { + response = conv( response ); + } else { + try { + response = conv( response ); + } catch ( e ) { + return { + state: "parsererror", + error: conv ? e : "No conversion from " + prev + " to " + current + }; + } + } + } + } + } + } + + return { state: "success", data: response }; +} + +jQuery.extend( { + + // Counter for holding the number of active queries + active: 0, + + // Last-Modified header cache for next request + lastModified: {}, + etag: {}, + + ajaxSettings: { + url: location.href, + type: "GET", + isLocal: rlocalProtocol.test( location.protocol ), + global: true, + processData: true, + async: true, + contentType: "application/x-www-form-urlencoded; charset=UTF-8", + + /* + timeout: 0, + data: null, + dataType: null, + username: null, + password: null, + cache: null, + throws: false, + traditional: false, + headers: {}, + */ + + accepts: { + "*": allTypes, + text: "text/plain", + html: "text/html", + xml: "application/xml, text/xml", + json: "application/json, text/javascript" + }, + + contents: { + xml: /\bxml\b/, + html: /\bhtml/, + json: /\bjson\b/ + }, + + responseFields: { + xml: "responseXML", + text: "responseText", + json: "responseJSON" + }, + + // Data converters + // Keys separate source (or catchall "*") and destination types with a single space + converters: { + + // Convert anything to text + "* text": String, + + // Text to html (true = no transformation) + "text html": true, + + // Evaluate text as a json expression + "text json": JSON.parse, + + // Parse text as xml + "text xml": jQuery.parseXML + }, + + // For options that shouldn't be deep extended: + // you can add your own custom options here if + // and when you create one that shouldn't be + // deep extended (see ajaxExtend) + flatOptions: { + url: true, + context: true + } + }, + + // Creates a full fledged settings object into target + // with both ajaxSettings and settings fields. + // If target is omitted, writes into ajaxSettings. + ajaxSetup: function( target, settings ) { + return settings ? + + // Building a settings object + ajaxExtend( ajaxExtend( target, jQuery.ajaxSettings ), settings ) : + + // Extending ajaxSettings + ajaxExtend( jQuery.ajaxSettings, target ); + }, + + ajaxPrefilter: addToPrefiltersOrTransports( prefilters ), + ajaxTransport: addToPrefiltersOrTransports( transports ), + + // Main method + ajax: function( url, options ) { + + // If url is an object, simulate pre-1.5 signature + if ( typeof url === "object" ) { + options = url; + url = undefined; + } + + // Force options to be an object + options = options || {}; + + var transport, + + // URL without anti-cache param + cacheURL, + + // Response headers + responseHeadersString, + responseHeaders, + + // timeout handle + timeoutTimer, + + // Url cleanup var + urlAnchor, + + // Request state (becomes false upon send and true upon completion) + completed, + + // To know if global events are to be dispatched + fireGlobals, + + // Loop variable + i, + + // uncached part of the url + uncached, + + // Create the final options object + s = jQuery.ajaxSetup( {}, options ), + + // Callbacks context + callbackContext = s.context || s, + + // Context for global events is callbackContext if it is a DOM node or jQuery collection + globalEventContext = s.context && + ( callbackContext.nodeType || callbackContext.jquery ) ? + jQuery( callbackContext ) : + jQuery.event, + + // Deferreds + deferred = jQuery.Deferred(), + completeDeferred = jQuery.Callbacks( "once memory" ), + + // Status-dependent callbacks + statusCode = s.statusCode || {}, + + // Headers (they are sent all at once) + requestHeaders = {}, + requestHeadersNames = {}, + + // Default abort message + strAbort = "canceled", + + // Fake xhr + jqXHR = { + readyState: 0, + + // Builds headers hashtable if needed + getResponseHeader: function( key ) { + var match; + if ( completed ) { + if ( !responseHeaders ) { + responseHeaders = {}; + while ( ( match = rheaders.exec( responseHeadersString ) ) ) { + responseHeaders[ match[ 1 ].toLowerCase() + " " ] = + ( responseHeaders[ match[ 1 ].toLowerCase() + " " ] || [] ) + .concat( match[ 2 ] ); + } + } + match = responseHeaders[ key.toLowerCase() + " " ]; + } + return match == null ? null : match.join( ", " ); + }, + + // Raw string + getAllResponseHeaders: function() { + return completed ? responseHeadersString : null; + }, + + // Caches the header + setRequestHeader: function( name, value ) { + if ( completed == null ) { + name = requestHeadersNames[ name.toLowerCase() ] = + requestHeadersNames[ name.toLowerCase() ] || name; + requestHeaders[ name ] = value; + } + return this; + }, + + // Overrides response content-type header + overrideMimeType: function( type ) { + if ( completed == null ) { + s.mimeType = type; + } + return this; + }, + + // Status-dependent callbacks + statusCode: function( map ) { + var code; + if ( map ) { + if ( completed ) { + + // Execute the appropriate callbacks + jqXHR.always( map[ jqXHR.status ] ); + } else { + + // Lazy-add the new callbacks in a way that preserves old ones + for ( code in map ) { + statusCode[ code ] = [ statusCode[ code ], map[ code ] ]; + } + } + } + return this; + }, + + // Cancel the request + abort: function( statusText ) { + var finalText = statusText || strAbort; + if ( transport ) { + transport.abort( finalText ); + } + done( 0, finalText ); + return this; + } + }; + + // Attach deferreds + deferred.promise( jqXHR ); + + // Add protocol if not provided (prefilters might expect it) + // Handle falsy url in the settings object (#10093: consistency with old signature) + // We also use the url parameter if available + s.url = ( ( url || s.url || location.href ) + "" ) + .replace( rprotocol, location.protocol + "//" ); + + // Alias method option to type as per ticket #12004 + s.type = options.method || options.type || s.method || s.type; + + // Extract dataTypes list + s.dataTypes = ( s.dataType || "*" ).toLowerCase().match( rnothtmlwhite ) || [ "" ]; + + // A cross-domain request is in order when the origin doesn't match the current origin. + if ( s.crossDomain == null ) { + urlAnchor = document.createElement( "a" ); + + // Support: IE <=8 - 11, Edge 12 - 15 + // IE throws exception on accessing the href property if url is malformed, + // e.g. http://example.com:80x/ + try { + urlAnchor.href = s.url; + + // Support: IE <=8 - 11 only + // Anchor's host property isn't correctly set when s.url is relative + urlAnchor.href = urlAnchor.href; + s.crossDomain = originAnchor.protocol + "//" + originAnchor.host !== + urlAnchor.protocol + "//" + urlAnchor.host; + } catch ( e ) { + + // If there is an error parsing the URL, assume it is crossDomain, + // it can be rejected by the transport if it is invalid + s.crossDomain = true; + } + } + + // Convert data if not already a string + if ( s.data && s.processData && typeof s.data !== "string" ) { + s.data = jQuery.param( s.data, s.traditional ); + } + + // Apply prefilters + inspectPrefiltersOrTransports( prefilters, s, options, jqXHR ); + + // If request was aborted inside a prefilter, stop there + if ( completed ) { + return jqXHR; + } + + // We can fire global events as of now if asked to + // Don't fire events if jQuery.event is undefined in an AMD-usage scenario (#15118) + fireGlobals = jQuery.event && s.global; + + // Watch for a new set of requests + if ( fireGlobals && jQuery.active++ === 0 ) { + jQuery.event.trigger( "ajaxStart" ); + } + + // Uppercase the type + s.type = s.type.toUpperCase(); + + // Determine if request has content + s.hasContent = !rnoContent.test( s.type ); + + // Save the URL in case we're toying with the If-Modified-Since + // and/or If-None-Match header later on + // Remove hash to simplify url manipulation + cacheURL = s.url.replace( rhash, "" ); + + // More options handling for requests with no content + if ( !s.hasContent ) { + + // Remember the hash so we can put it back + uncached = s.url.slice( cacheURL.length ); + + // If data is available and should be processed, append data to url + if ( s.data && ( s.processData || typeof s.data === "string" ) ) { + cacheURL += ( rquery.test( cacheURL ) ? "&" : "?" ) + s.data; + + // #9682: remove data so that it's not used in an eventual retry + delete s.data; + } + + // Add or update anti-cache param if needed + if ( s.cache === false ) { + cacheURL = cacheURL.replace( rantiCache, "$1" ); + uncached = ( rquery.test( cacheURL ) ? "&" : "?" ) + "_=" + ( nonce++ ) + uncached; + } + + // Put hash and anti-cache on the URL that will be requested (gh-1732) + s.url = cacheURL + uncached; + + // Change '%20' to '+' if this is encoded form body content (gh-2658) + } else if ( s.data && s.processData && + ( s.contentType || "" ).indexOf( "application/x-www-form-urlencoded" ) === 0 ) { + s.data = s.data.replace( r20, "+" ); + } + + // Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode. + if ( s.ifModified ) { + if ( jQuery.lastModified[ cacheURL ] ) { + jqXHR.setRequestHeader( "If-Modified-Since", jQuery.lastModified[ cacheURL ] ); + } + if ( jQuery.etag[ cacheURL ] ) { + jqXHR.setRequestHeader( "If-None-Match", jQuery.etag[ cacheURL ] ); + } + } + + // Set the correct header, if data is being sent + if ( s.data && s.hasContent && s.contentType !== false || options.contentType ) { + jqXHR.setRequestHeader( "Content-Type", s.contentType ); + } + + // Set the Accepts header for the server, depending on the dataType + jqXHR.setRequestHeader( + "Accept", + s.dataTypes[ 0 ] && s.accepts[ s.dataTypes[ 0 ] ] ? + s.accepts[ s.dataTypes[ 0 ] ] + + ( s.dataTypes[ 0 ] !== "*" ? ", " + allTypes + "; q=0.01" : "" ) : + s.accepts[ "*" ] + ); + + // Check for headers option + for ( i in s.headers ) { + jqXHR.setRequestHeader( i, s.headers[ i ] ); + } + + // Allow custom headers/mimetypes and early abort + if ( s.beforeSend && + ( s.beforeSend.call( callbackContext, jqXHR, s ) === false || completed ) ) { + + // Abort if not done already and return + return jqXHR.abort(); + } + + // Aborting is no longer a cancellation + strAbort = "abort"; + + // Install callbacks on deferreds + completeDeferred.add( s.complete ); + jqXHR.done( s.success ); + jqXHR.fail( s.error ); + + // Get transport + transport = inspectPrefiltersOrTransports( transports, s, options, jqXHR ); + + // If no transport, we auto-abort + if ( !transport ) { + done( -1, "No Transport" ); + } else { + jqXHR.readyState = 1; + + // Send global event + if ( fireGlobals ) { + globalEventContext.trigger( "ajaxSend", [ jqXHR, s ] ); + } + + // If request was aborted inside ajaxSend, stop there + if ( completed ) { + return jqXHR; + } + + // Timeout + if ( s.async && s.timeout > 0 ) { + timeoutTimer = window.setTimeout( function() { + jqXHR.abort( "timeout" ); + }, s.timeout ); + } + + try { + completed = false; + transport.send( requestHeaders, done ); + } catch ( e ) { + + // Rethrow post-completion exceptions + if ( completed ) { + throw e; + } + + // Propagate others as results + done( -1, e ); + } + } + + // Callback for when everything is done + function done( status, nativeStatusText, responses, headers ) { + var isSuccess, success, error, response, modified, + statusText = nativeStatusText; + + // Ignore repeat invocations + if ( completed ) { + return; + } + + completed = true; + + // Clear timeout if it exists + if ( timeoutTimer ) { + window.clearTimeout( timeoutTimer ); + } + + // Dereference transport for early garbage collection + // (no matter how long the jqXHR object will be used) + transport = undefined; + + // Cache response headers + responseHeadersString = headers || ""; + + // Set readyState + jqXHR.readyState = status > 0 ? 4 : 0; + + // Determine if successful + isSuccess = status >= 200 && status < 300 || status === 304; + + // Get response data + if ( responses ) { + response = ajaxHandleResponses( s, jqXHR, responses ); + } + + // Convert no matter what (that way responseXXX fields are always set) + response = ajaxConvert( s, response, jqXHR, isSuccess ); + + // If successful, handle type chaining + if ( isSuccess ) { + + // Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode. + if ( s.ifModified ) { + modified = jqXHR.getResponseHeader( "Last-Modified" ); + if ( modified ) { + jQuery.lastModified[ cacheURL ] = modified; + } + modified = jqXHR.getResponseHeader( "etag" ); + if ( modified ) { + jQuery.etag[ cacheURL ] = modified; + } + } + + // if no content + if ( status === 204 || s.type === "HEAD" ) { + statusText = "nocontent"; + + // if not modified + } else if ( status === 304 ) { + statusText = "notmodified"; + + // If we have data, let's convert it + } else { + statusText = response.state; + success = response.data; + error = response.error; + isSuccess = !error; + } + } else { + + // Extract error from statusText and normalize for non-aborts + error = statusText; + if ( status || !statusText ) { + statusText = "error"; + if ( status < 0 ) { + status = 0; + } + } + } + + // Set data for the fake xhr object + jqXHR.status = status; + jqXHR.statusText = ( nativeStatusText || statusText ) + ""; + + // Success/Error + if ( isSuccess ) { + deferred.resolveWith( callbackContext, [ success, statusText, jqXHR ] ); + } else { + deferred.rejectWith( callbackContext, [ jqXHR, statusText, error ] ); + } + + // Status-dependent callbacks + jqXHR.statusCode( statusCode ); + statusCode = undefined; + + if ( fireGlobals ) { + globalEventContext.trigger( isSuccess ? "ajaxSuccess" : "ajaxError", + [ jqXHR, s, isSuccess ? success : error ] ); + } + + // Complete + completeDeferred.fireWith( callbackContext, [ jqXHR, statusText ] ); + + if ( fireGlobals ) { + globalEventContext.trigger( "ajaxComplete", [ jqXHR, s ] ); + + // Handle the global AJAX counter + if ( !( --jQuery.active ) ) { + jQuery.event.trigger( "ajaxStop" ); + } + } + } + + return jqXHR; + }, + + getJSON: function( url, data, callback ) { + return jQuery.get( url, data, callback, "json" ); + }, + + getScript: function( url, callback ) { + return jQuery.get( url, undefined, callback, "script" ); + } +} ); + +jQuery.each( [ "get", "post" ], function( i, method ) { + jQuery[ method ] = function( url, data, callback, type ) { + + // Shift arguments if data argument was omitted + if ( isFunction( data ) ) { + type = type || callback; + callback = data; + data = undefined; + } + + // The url can be an options object (which then must have .url) + return jQuery.ajax( jQuery.extend( { + url: url, + type: method, + dataType: type, + data: data, + success: callback + }, jQuery.isPlainObject( url ) && url ) ); + }; +} ); + + +jQuery._evalUrl = function( url, options ) { + return jQuery.ajax( { + url: url, + + // Make this explicit, since user can override this through ajaxSetup (#11264) + type: "GET", + dataType: "script", + cache: true, + async: false, + global: false, + + // Only evaluate the response if it is successful (gh-4126) + // dataFilter is not invoked for failure responses, so using it instead + // of the default converter is kludgy but it works. + converters: { + "text script": function() {} + }, + dataFilter: function( response ) { + jQuery.globalEval( response, options ); + } + } ); +}; + + +jQuery.fn.extend( { + wrapAll: function( html ) { + var wrap; + + if ( this[ 0 ] ) { + if ( isFunction( html ) ) { + html = html.call( this[ 0 ] ); + } + + // The elements to wrap the target around + wrap = jQuery( html, this[ 0 ].ownerDocument ).eq( 0 ).clone( true ); + + if ( this[ 0 ].parentNode ) { + wrap.insertBefore( this[ 0 ] ); + } + + wrap.map( function() { + var elem = this; + + while ( elem.firstElementChild ) { + elem = elem.firstElementChild; + } + + return elem; + } ).append( this ); + } + + return this; + }, + + wrapInner: function( html ) { + if ( isFunction( html ) ) { + return this.each( function( i ) { + jQuery( this ).wrapInner( html.call( this, i ) ); + } ); + } + + return this.each( function() { + var self = jQuery( this ), + contents = self.contents(); + + if ( contents.length ) { + contents.wrapAll( html ); + + } else { + self.append( html ); + } + } ); + }, + + wrap: function( html ) { + var htmlIsFunction = isFunction( html ); + + return this.each( function( i ) { + jQuery( this ).wrapAll( htmlIsFunction ? html.call( this, i ) : html ); + } ); + }, + + unwrap: function( selector ) { + this.parent( selector ).not( "body" ).each( function() { + jQuery( this ).replaceWith( this.childNodes ); + } ); + return this; + } +} ); + + +jQuery.expr.pseudos.hidden = function( elem ) { + return !jQuery.expr.pseudos.visible( elem ); +}; +jQuery.expr.pseudos.visible = function( elem ) { + return !!( elem.offsetWidth || elem.offsetHeight || elem.getClientRects().length ); +}; + + + + +jQuery.ajaxSettings.xhr = function() { + try { + return new window.XMLHttpRequest(); + } catch ( e ) {} +}; + +var xhrSuccessStatus = { + + // File protocol always yields status code 0, assume 200 + 0: 200, + + // Support: IE <=9 only + // #1450: sometimes IE returns 1223 when it should be 204 + 1223: 204 + }, + xhrSupported = jQuery.ajaxSettings.xhr(); + +support.cors = !!xhrSupported && ( "withCredentials" in xhrSupported ); +support.ajax = xhrSupported = !!xhrSupported; + +jQuery.ajaxTransport( function( options ) { + var callback, errorCallback; + + // Cross domain only allowed if supported through XMLHttpRequest + if ( support.cors || xhrSupported && !options.crossDomain ) { + return { + send: function( headers, complete ) { + var i, + xhr = options.xhr(); + + xhr.open( + options.type, + options.url, + options.async, + options.username, + options.password + ); + + // Apply custom fields if provided + if ( options.xhrFields ) { + for ( i in options.xhrFields ) { + xhr[ i ] = options.xhrFields[ i ]; + } + } + + // Override mime type if needed + if ( options.mimeType && xhr.overrideMimeType ) { + xhr.overrideMimeType( options.mimeType ); + } + + // X-Requested-With header + // For cross-domain requests, seeing as conditions for a preflight are + // akin to a jigsaw puzzle, we simply never set it to be sure. + // (it can always be set on a per-request basis or even using ajaxSetup) + // For same-domain requests, won't change header if already provided. + if ( !options.crossDomain && !headers[ "X-Requested-With" ] ) { + headers[ "X-Requested-With" ] = "XMLHttpRequest"; + } + + // Set headers + for ( i in headers ) { + xhr.setRequestHeader( i, headers[ i ] ); + } + + // Callback + callback = function( type ) { + return function() { + if ( callback ) { + callback = errorCallback = xhr.onload = + xhr.onerror = xhr.onabort = xhr.ontimeout = + xhr.onreadystatechange = null; + + if ( type === "abort" ) { + xhr.abort(); + } else if ( type === "error" ) { + + // Support: IE <=9 only + // On a manual native abort, IE9 throws + // errors on any property access that is not readyState + if ( typeof xhr.status !== "number" ) { + complete( 0, "error" ); + } else { + complete( + + // File: protocol always yields status 0; see #8605, #14207 + xhr.status, + xhr.statusText + ); + } + } else { + complete( + xhrSuccessStatus[ xhr.status ] || xhr.status, + xhr.statusText, + + // Support: IE <=9 only + // IE9 has no XHR2 but throws on binary (trac-11426) + // For XHR2 non-text, let the caller handle it (gh-2498) + ( xhr.responseType || "text" ) !== "text" || + typeof xhr.responseText !== "string" ? + { binary: xhr.response } : + { text: xhr.responseText }, + xhr.getAllResponseHeaders() + ); + } + } + }; + }; + + // Listen to events + xhr.onload = callback(); + errorCallback = xhr.onerror = xhr.ontimeout = callback( "error" ); + + // Support: IE 9 only + // Use onreadystatechange to replace onabort + // to handle uncaught aborts + if ( xhr.onabort !== undefined ) { + xhr.onabort = errorCallback; + } else { + xhr.onreadystatechange = function() { + + // Check readyState before timeout as it changes + if ( xhr.readyState === 4 ) { + + // Allow onerror to be called first, + // but that will not handle a native abort + // Also, save errorCallback to a variable + // as xhr.onerror cannot be accessed + window.setTimeout( function() { + if ( callback ) { + errorCallback(); + } + } ); + } + }; + } + + // Create the abort callback + callback = callback( "abort" ); + + try { + + // Do send the request (this may raise an exception) + xhr.send( options.hasContent && options.data || null ); + } catch ( e ) { + + // #14683: Only rethrow if this hasn't been notified as an error yet + if ( callback ) { + throw e; + } + } + }, + + abort: function() { + if ( callback ) { + callback(); + } + } + }; + } +} ); + + + + +// Prevent auto-execution of scripts when no explicit dataType was provided (See gh-2432) +jQuery.ajaxPrefilter( function( s ) { + if ( s.crossDomain ) { + s.contents.script = false; + } +} ); + +// Install script dataType +jQuery.ajaxSetup( { + accepts: { + script: "text/javascript, application/javascript, " + + "application/ecmascript, application/x-ecmascript" + }, + contents: { + script: /\b(?:java|ecma)script\b/ + }, + converters: { + "text script": function( text ) { + jQuery.globalEval( text ); + return text; + } + } +} ); + +// Handle cache's special case and crossDomain +jQuery.ajaxPrefilter( "script", function( s ) { + if ( s.cache === undefined ) { + s.cache = false; + } + if ( s.crossDomain ) { + s.type = "GET"; + } +} ); + +// Bind script tag hack transport +jQuery.ajaxTransport( "script", function( s ) { + + // This transport only deals with cross domain or forced-by-attrs requests + if ( s.crossDomain || s.scriptAttrs ) { + var script, callback; + return { + send: function( _, complete ) { + script = jQuery( "<script>" ) + .attr( s.scriptAttrs || {} ) + .prop( { charset: s.scriptCharset, src: s.url } ) + .on( "load error", callback = function( evt ) { + script.remove(); + callback = null; + if ( evt ) { + complete( evt.type === "error" ? 404 : 200, evt.type ); + } + } ); + + // Use native DOM manipulation to avoid our domManip AJAX trickery + document.head.appendChild( script[ 0 ] ); + }, + abort: function() { + if ( callback ) { + callback(); + } + } + }; + } +} ); + + + + +var oldCallbacks = [], + rjsonp = /(=)\?(?=&|$)|\?\?/; + +// Default jsonp settings +jQuery.ajaxSetup( { + jsonp: "callback", + jsonpCallback: function() { + var callback = oldCallbacks.pop() || ( jQuery.expando + "_" + ( nonce++ ) ); + this[ callback ] = true; + return callback; + } +} ); + +// Detect, normalize options and install callbacks for jsonp requests +jQuery.ajaxPrefilter( "json jsonp", function( s, originalSettings, jqXHR ) { + + var callbackName, overwritten, responseContainer, + jsonProp = s.jsonp !== false && ( rjsonp.test( s.url ) ? + "url" : + typeof s.data === "string" && + ( s.contentType || "" ) + .indexOf( "application/x-www-form-urlencoded" ) === 0 && + rjsonp.test( s.data ) && "data" + ); + + // Handle iff the expected data type is "jsonp" or we have a parameter to set + if ( jsonProp || s.dataTypes[ 0 ] === "jsonp" ) { + + // Get callback name, remembering preexisting value associated with it + callbackName = s.jsonpCallback = isFunction( s.jsonpCallback ) ? + s.jsonpCallback() : + s.jsonpCallback; + + // Insert callback into url or form data + if ( jsonProp ) { + s[ jsonProp ] = s[ jsonProp ].replace( rjsonp, "$1" + callbackName ); + } else if ( s.jsonp !== false ) { + s.url += ( rquery.test( s.url ) ? "&" : "?" ) + s.jsonp + "=" + callbackName; + } + + // Use data converter to retrieve json after script execution + s.converters[ "script json" ] = function() { + if ( !responseContainer ) { + jQuery.error( callbackName + " was not called" ); + } + return responseContainer[ 0 ]; + }; + + // Force json dataType + s.dataTypes[ 0 ] = "json"; + + // Install callback + overwritten = window[ callbackName ]; + window[ callbackName ] = function() { + responseContainer = arguments; + }; + + // Clean-up function (fires after converters) + jqXHR.always( function() { + + // If previous value didn't exist - remove it + if ( overwritten === undefined ) { + jQuery( window ).removeProp( callbackName ); + + // Otherwise restore preexisting value + } else { + window[ callbackName ] = overwritten; + } + + // Save back as free + if ( s[ callbackName ] ) { + + // Make sure that re-using the options doesn't screw things around + s.jsonpCallback = originalSettings.jsonpCallback; + + // Save the callback name for future use + oldCallbacks.push( callbackName ); + } + + // Call if it was a function and we have a response + if ( responseContainer && isFunction( overwritten ) ) { + overwritten( responseContainer[ 0 ] ); + } + + responseContainer = overwritten = undefined; + } ); + + // Delegate to script + return "script"; + } +} ); + + + + +// Support: Safari 8 only +// In Safari 8 documents created via document.implementation.createHTMLDocument +// collapse sibling forms: the second one becomes a child of the first one. +// Because of that, this security measure has to be disabled in Safari 8. +// https://bugs.webkit.org/show_bug.cgi?id=137337 +support.createHTMLDocument = ( function() { + var body = document.implementation.createHTMLDocument( "" ).body; + body.innerHTML = "<form></form><form></form>"; + return body.childNodes.length === 2; +} )(); + + +// Argument "data" should be string of html +// context (optional): If specified, the fragment will be created in this context, +// defaults to document +// keepScripts (optional): If true, will include scripts passed in the html string +jQuery.parseHTML = function( data, context, keepScripts ) { + if ( typeof data !== "string" ) { + return []; + } + if ( typeof context === "boolean" ) { + keepScripts = context; + context = false; + } + + var base, parsed, scripts; + + if ( !context ) { + + // Stop scripts or inline event handlers from being executed immediately + // by using document.implementation + if ( support.createHTMLDocument ) { + context = document.implementation.createHTMLDocument( "" ); + + // Set the base href for the created document + // so any parsed elements with URLs + // are based on the document's URL (gh-2965) + base = context.createElement( "base" ); + base.href = document.location.href; + context.head.appendChild( base ); + } else { + context = document; + } + } + + parsed = rsingleTag.exec( data ); + scripts = !keepScripts && []; + + // Single tag + if ( parsed ) { + return [ context.createElement( parsed[ 1 ] ) ]; + } + + parsed = buildFragment( [ data ], context, scripts ); + + if ( scripts && scripts.length ) { + jQuery( scripts ).remove(); + } + + return jQuery.merge( [], parsed.childNodes ); +}; + + +/** + * Load a url into a page + */ +jQuery.fn.load = function( url, params, callback ) { + var selector, type, response, + self = this, + off = url.indexOf( " " ); + + if ( off > -1 ) { + selector = stripAndCollapse( url.slice( off ) ); + url = url.slice( 0, off ); + } + + // If it's a function + if ( isFunction( params ) ) { + + // We assume that it's the callback + callback = params; + params = undefined; + + // Otherwise, build a param string + } else if ( params && typeof params === "object" ) { + type = "POST"; + } + + // If we have elements to modify, make the request + if ( self.length > 0 ) { + jQuery.ajax( { + url: url, + + // If "type" variable is undefined, then "GET" method will be used. + // Make value of this field explicit since + // user can override it through ajaxSetup method + type: type || "GET", + dataType: "html", + data: params + } ).done( function( responseText ) { + + // Save response for use in complete callback + response = arguments; + + self.html( selector ? + + // If a selector was specified, locate the right elements in a dummy div + // Exclude scripts to avoid IE 'Permission Denied' errors + jQuery( "<div>" ).append( jQuery.parseHTML( responseText ) ).find( selector ) : + + // Otherwise use the full result + responseText ); + + // If the request succeeds, this function gets "data", "status", "jqXHR" + // but they are ignored because response was set above. + // If it fails, this function gets "jqXHR", "status", "error" + } ).always( callback && function( jqXHR, status ) { + self.each( function() { + callback.apply( this, response || [ jqXHR.responseText, status, jqXHR ] ); + } ); + } ); + } + + return this; +}; + + + + +// Attach a bunch of functions for handling common AJAX events +jQuery.each( [ + "ajaxStart", + "ajaxStop", + "ajaxComplete", + "ajaxError", + "ajaxSuccess", + "ajaxSend" +], function( i, type ) { + jQuery.fn[ type ] = function( fn ) { + return this.on( type, fn ); + }; +} ); + + + + +jQuery.expr.pseudos.animated = function( elem ) { + return jQuery.grep( jQuery.timers, function( fn ) { + return elem === fn.elem; + } ).length; +}; + + + + +jQuery.offset = { + setOffset: function( elem, options, i ) { + var curPosition, curLeft, curCSSTop, curTop, curOffset, curCSSLeft, calculatePosition, + position = jQuery.css( elem, "position" ), + curElem = jQuery( elem ), + props = {}; + + // Set position first, in-case top/left are set even on static elem + if ( position === "static" ) { + elem.style.position = "relative"; + } + + curOffset = curElem.offset(); + curCSSTop = jQuery.css( elem, "top" ); + curCSSLeft = jQuery.css( elem, "left" ); + calculatePosition = ( position === "absolute" || position === "fixed" ) && + ( curCSSTop + curCSSLeft ).indexOf( "auto" ) > -1; + + // Need to be able to calculate position if either + // top or left is auto and position is either absolute or fixed + if ( calculatePosition ) { + curPosition = curElem.position(); + curTop = curPosition.top; + curLeft = curPosition.left; + + } else { + curTop = parseFloat( curCSSTop ) || 0; + curLeft = parseFloat( curCSSLeft ) || 0; + } + + if ( isFunction( options ) ) { + + // Use jQuery.extend here to allow modification of coordinates argument (gh-1848) + options = options.call( elem, i, jQuery.extend( {}, curOffset ) ); + } + + if ( options.top != null ) { + props.top = ( options.top - curOffset.top ) + curTop; + } + if ( options.left != null ) { + props.left = ( options.left - curOffset.left ) + curLeft; + } + + if ( "using" in options ) { + options.using.call( elem, props ); + + } else { + curElem.css( props ); + } + } +}; + +jQuery.fn.extend( { + + // offset() relates an element's border box to the document origin + offset: function( options ) { + + // Preserve chaining for setter + if ( arguments.length ) { + return options === undefined ? + this : + this.each( function( i ) { + jQuery.offset.setOffset( this, options, i ); + } ); + } + + var rect, win, + elem = this[ 0 ]; + + if ( !elem ) { + return; + } + + // Return zeros for disconnected and hidden (display: none) elements (gh-2310) + // Support: IE <=11 only + // Running getBoundingClientRect on a + // disconnected node in IE throws an error + if ( !elem.getClientRects().length ) { + return { top: 0, left: 0 }; + } + + // Get document-relative position by adding viewport scroll to viewport-relative gBCR + rect = elem.getBoundingClientRect(); + win = elem.ownerDocument.defaultView; + return { + top: rect.top + win.pageYOffset, + left: rect.left + win.pageXOffset + }; + }, + + // position() relates an element's margin box to its offset parent's padding box + // This corresponds to the behavior of CSS absolute positioning + position: function() { + if ( !this[ 0 ] ) { + return; + } + + var offsetParent, offset, doc, + elem = this[ 0 ], + parentOffset = { top: 0, left: 0 }; + + // position:fixed elements are offset from the viewport, which itself always has zero offset + if ( jQuery.css( elem, "position" ) === "fixed" ) { + + // Assume position:fixed implies availability of getBoundingClientRect + offset = elem.getBoundingClientRect(); + + } else { + offset = this.offset(); + + // Account for the *real* offset parent, which can be the document or its root element + // when a statically positioned element is identified + doc = elem.ownerDocument; + offsetParent = elem.offsetParent || doc.documentElement; + while ( offsetParent && + ( offsetParent === doc.body || offsetParent === doc.documentElement ) && + jQuery.css( offsetParent, "position" ) === "static" ) { + + offsetParent = offsetParent.parentNode; + } + if ( offsetParent && offsetParent !== elem && offsetParent.nodeType === 1 ) { + + // Incorporate borders into its offset, since they are outside its content origin + parentOffset = jQuery( offsetParent ).offset(); + parentOffset.top += jQuery.css( offsetParent, "borderTopWidth", true ); + parentOffset.left += jQuery.css( offsetParent, "borderLeftWidth", true ); + } + } + + // Subtract parent offsets and element margins + return { + top: offset.top - parentOffset.top - jQuery.css( elem, "marginTop", true ), + left: offset.left - parentOffset.left - jQuery.css( elem, "marginLeft", true ) + }; + }, + + // This method will return documentElement in the following cases: + // 1) For the element inside the iframe without offsetParent, this method will return + // documentElement of the parent window + // 2) For the hidden or detached element + // 3) For body or html element, i.e. in case of the html node - it will return itself + // + // but those exceptions were never presented as a real life use-cases + // and might be considered as more preferable results. + // + // This logic, however, is not guaranteed and can change at any point in the future + offsetParent: function() { + return this.map( function() { + var offsetParent = this.offsetParent; + + while ( offsetParent && jQuery.css( offsetParent, "position" ) === "static" ) { + offsetParent = offsetParent.offsetParent; + } + + return offsetParent || documentElement; + } ); + } +} ); + +// Create scrollLeft and scrollTop methods +jQuery.each( { scrollLeft: "pageXOffset", scrollTop: "pageYOffset" }, function( method, prop ) { + var top = "pageYOffset" === prop; + + jQuery.fn[ method ] = function( val ) { + return access( this, function( elem, method, val ) { + + // Coalesce documents and windows + var win; + if ( isWindow( elem ) ) { + win = elem; + } else if ( elem.nodeType === 9 ) { + win = elem.defaultView; + } + + if ( val === undefined ) { + return win ? win[ prop ] : elem[ method ]; + } + + if ( win ) { + win.scrollTo( + !top ? val : win.pageXOffset, + top ? val : win.pageYOffset + ); + + } else { + elem[ method ] = val; + } + }, method, val, arguments.length ); + }; +} ); + +// Support: Safari <=7 - 9.1, Chrome <=37 - 49 +// Add the top/left cssHooks using jQuery.fn.position +// Webkit bug: https://bugs.webkit.org/show_bug.cgi?id=29084 +// Blink bug: https://bugs.chromium.org/p/chromium/issues/detail?id=589347 +// getComputedStyle returns percent when specified for top/left/bottom/right; +// rather than make the css module depend on the offset module, just check for it here +jQuery.each( [ "top", "left" ], function( i, prop ) { + jQuery.cssHooks[ prop ] = addGetHookIf( support.pixelPosition, + function( elem, computed ) { + if ( computed ) { + computed = curCSS( elem, prop ); + + // If curCSS returns percentage, fallback to offset + return rnumnonpx.test( computed ) ? + jQuery( elem ).position()[ prop ] + "px" : + computed; + } + } + ); +} ); + + +// Create innerHeight, innerWidth, height, width, outerHeight and outerWidth methods +jQuery.each( { Height: "height", Width: "width" }, function( name, type ) { + jQuery.each( { padding: "inner" + name, content: type, "": "outer" + name }, + function( defaultExtra, funcName ) { + + // Margin is only for outerHeight, outerWidth + jQuery.fn[ funcName ] = function( margin, value ) { + var chainable = arguments.length && ( defaultExtra || typeof margin !== "boolean" ), + extra = defaultExtra || ( margin === true || value === true ? "margin" : "border" ); + + return access( this, function( elem, type, value ) { + var doc; + + if ( isWindow( elem ) ) { + + // $( window ).outerWidth/Height return w/h including scrollbars (gh-1729) + return funcName.indexOf( "outer" ) === 0 ? + elem[ "inner" + name ] : + elem.document.documentElement[ "client" + name ]; + } + + // Get document width or height + if ( elem.nodeType === 9 ) { + doc = elem.documentElement; + + // Either scroll[Width/Height] or offset[Width/Height] or client[Width/Height], + // whichever is greatest + return Math.max( + elem.body[ "scroll" + name ], doc[ "scroll" + name ], + elem.body[ "offset" + name ], doc[ "offset" + name ], + doc[ "client" + name ] + ); + } + + return value === undefined ? + + // Get width or height on the element, requesting but not forcing parseFloat + jQuery.css( elem, type, extra ) : + + // Set width or height on the element + jQuery.style( elem, type, value, extra ); + }, type, chainable ? margin : undefined, chainable ); + }; + } ); +} ); + + +jQuery.each( ( "blur focus focusin focusout resize scroll click dblclick " + + "mousedown mouseup mousemove mouseover mouseout mouseenter mouseleave " + + "change select submit keydown keypress keyup contextmenu" ).split( " " ), + function( i, name ) { + + // Handle event binding + jQuery.fn[ name ] = function( data, fn ) { + return arguments.length > 0 ? + this.on( name, null, data, fn ) : + this.trigger( name ); + }; +} ); + +jQuery.fn.extend( { + hover: function( fnOver, fnOut ) { + return this.mouseenter( fnOver ).mouseleave( fnOut || fnOver ); + } +} ); + + + + +jQuery.fn.extend( { + + bind: function( types, data, fn ) { + return this.on( types, null, data, fn ); + }, + unbind: function( types, fn ) { + return this.off( types, null, fn ); + }, + + delegate: function( selector, types, data, fn ) { + return this.on( types, selector, data, fn ); + }, + undelegate: function( selector, types, fn ) { + + // ( namespace ) or ( selector, types [, fn] ) + return arguments.length === 1 ? + this.off( selector, "**" ) : + this.off( types, selector || "**", fn ); + } +} ); + +// Bind a function to a context, optionally partially applying any +// arguments. +// jQuery.proxy is deprecated to promote standards (specifically Function#bind) +// However, it is not slated for removal any time soon +jQuery.proxy = function( fn, context ) { + var tmp, args, proxy; + + if ( typeof context === "string" ) { + tmp = fn[ context ]; + context = fn; + fn = tmp; + } + + // Quick check to determine if target is callable, in the spec + // this throws a TypeError, but we will just return undefined. + if ( !isFunction( fn ) ) { + return undefined; + } + + // Simulated bind + args = slice.call( arguments, 2 ); + proxy = function() { + return fn.apply( context || this, args.concat( slice.call( arguments ) ) ); + }; + + // Set the guid of unique handler to the same of original handler, so it can be removed + proxy.guid = fn.guid = fn.guid || jQuery.guid++; + + return proxy; +}; + +jQuery.holdReady = function( hold ) { + if ( hold ) { + jQuery.readyWait++; + } else { + jQuery.ready( true ); + } +}; +jQuery.isArray = Array.isArray; +jQuery.parseJSON = JSON.parse; +jQuery.nodeName = nodeName; +jQuery.isFunction = isFunction; +jQuery.isWindow = isWindow; +jQuery.camelCase = camelCase; +jQuery.type = toType; + +jQuery.now = Date.now; + +jQuery.isNumeric = function( obj ) { + + // As of jQuery 3.0, isNumeric is limited to + // strings and numbers (primitives or objects) + // that can be coerced to finite numbers (gh-2662) + var type = jQuery.type( obj ); + return ( type === "number" || type === "string" ) && + + // parseFloat NaNs numeric-cast false positives ("") + // ...but misinterprets leading-number strings, particularly hex literals ("0x...") + // subtraction forces infinities to NaN + !isNaN( obj - parseFloat( obj ) ); +}; + + + + +// Register as a named AMD module, since jQuery can be concatenated with other +// files that may use define, but not via a proper concatenation script that +// understands anonymous AMD modules. A named AMD is safest and most robust +// way to register. Lowercase jquery is used because AMD module names are +// derived from file names, and jQuery is normally delivered in a lowercase +// file name. Do this after creating the global so that if an AMD module wants +// to call noConflict to hide this version of jQuery, it will work. + +// Note that for maximum portability, libraries that are not jQuery should +// declare themselves as anonymous modules, and avoid setting a global if an +// AMD loader is present. jQuery is a special case. For more information, see +// https://github.com/jrburke/requirejs/wiki/Updating-existing-libraries#wiki-anon + +if ( true ) { + !(__WEBPACK_AMD_DEFINE_ARRAY__ = [], __WEBPACK_AMD_DEFINE_RESULT__ = (function() { + return jQuery; + }).apply(exports, __WEBPACK_AMD_DEFINE_ARRAY__), + __WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__)); +} + + + + +var + + // Map over jQuery in case of overwrite + _jQuery = window.jQuery, + + // Map over the $ in case of overwrite + _$ = window.$; + +jQuery.noConflict = function( deep ) { + if ( window.$ === jQuery ) { + window.$ = _$; + } + + if ( deep && window.jQuery === jQuery ) { + window.jQuery = _jQuery; + } + + return jQuery; +}; + +// Expose jQuery and $ identifiers, even in AMD +// (#7102#comment:10, https://github.com/jquery/jquery/pull/557) +// and CommonJS for browser emulators (#13566) +if ( !noGlobal ) { + window.jQuery = window.$ = jQuery; +} + + + + +return jQuery; +} ); + + +/***/ }), + +/***/ "./node_modules/lodash/lodash.js": +/*!***************************************!*\ + !*** ./node_modules/lodash/lodash.js ***! + \***************************************/ +/*! no static exports found */ +/***/ (function(module, exports, __webpack_require__) { + +/* WEBPACK VAR INJECTION */(function(global, module) {var __WEBPACK_AMD_DEFINE_RESULT__;/** + * @license + * Lodash <https://lodash.com/> + * Copyright OpenJS Foundation and other contributors <https://openjsf.org/> + * Released under MIT license <https://lodash.com/license> + * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE> + * Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors + */ +;(function() { + + /** Used as a safe reference for `undefined` in pre-ES5 environments. */ + var undefined; + + /** Used as the semantic version number. */ + var VERSION = '4.17.15'; + + /** Used as the size to enable large array optimizations. */ + var LARGE_ARRAY_SIZE = 200; + + /** Error message constants. */ + var CORE_ERROR_TEXT = 'Unsupported core-js use. Try https://npms.io/search?q=ponyfill.', + FUNC_ERROR_TEXT = 'Expected a function'; + + /** Used to stand-in for `undefined` hash values. */ + var HASH_UNDEFINED = '__lodash_hash_undefined__'; + + /** Used as the maximum memoize cache size. */ + var MAX_MEMOIZE_SIZE = 500; + + /** Used as the internal argument placeholder. */ + var PLACEHOLDER = '__lodash_placeholder__'; + + /** Used to compose bitmasks for cloning. */ + var CLONE_DEEP_FLAG = 1, + CLONE_FLAT_FLAG = 2, + CLONE_SYMBOLS_FLAG = 4; + + /** Used to compose bitmasks for value comparisons. */ + var COMPARE_PARTIAL_FLAG = 1, + COMPARE_UNORDERED_FLAG = 2; + + /** Used to compose bitmasks for function metadata. */ + var WRAP_BIND_FLAG = 1, + WRAP_BIND_KEY_FLAG = 2, + WRAP_CURRY_BOUND_FLAG = 4, + WRAP_CURRY_FLAG = 8, + WRAP_CURRY_RIGHT_FLAG = 16, + WRAP_PARTIAL_FLAG = 32, + WRAP_PARTIAL_RIGHT_FLAG = 64, + WRAP_ARY_FLAG = 128, + WRAP_REARG_FLAG = 256, + WRAP_FLIP_FLAG = 512; + + /** Used as default options for `_.truncate`. */ + var DEFAULT_TRUNC_LENGTH = 30, + DEFAULT_TRUNC_OMISSION = '...'; + + /** Used to detect hot functions by number of calls within a span of milliseconds. */ + var HOT_COUNT = 800, + HOT_SPAN = 16; + + /** Used to indicate the type of lazy iteratees. */ + var LAZY_FILTER_FLAG = 1, + LAZY_MAP_FLAG = 2, + LAZY_WHILE_FLAG = 3; + + /** Used as references for various `Number` constants. */ + var INFINITY = 1 / 0, + MAX_SAFE_INTEGER = 9007199254740991, + MAX_INTEGER = 1.7976931348623157e+308, + NAN = 0 / 0; + + /** Used as references for the maximum length and index of an array. */ + var MAX_ARRAY_LENGTH = 4294967295, + MAX_ARRAY_INDEX = MAX_ARRAY_LENGTH - 1, + HALF_MAX_ARRAY_LENGTH = MAX_ARRAY_LENGTH >>> 1; + + /** Used to associate wrap methods with their bit flags. */ + var wrapFlags = [ + ['ary', WRAP_ARY_FLAG], + ['bind', WRAP_BIND_FLAG], + ['bindKey', WRAP_BIND_KEY_FLAG], + ['curry', WRAP_CURRY_FLAG], + ['curryRight', WRAP_CURRY_RIGHT_FLAG], + ['flip', WRAP_FLIP_FLAG], + ['partial', WRAP_PARTIAL_FLAG], + ['partialRight', WRAP_PARTIAL_RIGHT_FLAG], + ['rearg', WRAP_REARG_FLAG] + ]; + + /** `Object#toString` result references. */ + var argsTag = '[object Arguments]', + arrayTag = '[object Array]', + asyncTag = '[object AsyncFunction]', + boolTag = '[object Boolean]', + dateTag = '[object Date]', + domExcTag = '[object DOMException]', + errorTag = '[object Error]', + funcTag = '[object Function]', + genTag = '[object GeneratorFunction]', + mapTag = '[object Map]', + numberTag = '[object Number]', + nullTag = '[object Null]', + objectTag = '[object Object]', + promiseTag = '[object Promise]', + proxyTag = '[object Proxy]', + regexpTag = '[object RegExp]', + setTag = '[object Set]', + stringTag = '[object String]', + symbolTag = '[object Symbol]', + undefinedTag = '[object Undefined]', + weakMapTag = '[object WeakMap]', + weakSetTag = '[object WeakSet]'; + + var arrayBufferTag = '[object ArrayBuffer]', + dataViewTag = '[object DataView]', + float32Tag = '[object Float32Array]', + float64Tag = '[object Float64Array]', + int8Tag = '[object Int8Array]', + int16Tag = '[object Int16Array]', + int32Tag = '[object Int32Array]', + uint8Tag = '[object Uint8Array]', + uint8ClampedTag = '[object Uint8ClampedArray]', + uint16Tag = '[object Uint16Array]', + uint32Tag = '[object Uint32Array]'; + + /** Used to match empty string literals in compiled template source. */ + var reEmptyStringLeading = /\b__p \+= '';/g, + reEmptyStringMiddle = /\b(__p \+=) '' \+/g, + reEmptyStringTrailing = /(__e\(.*?\)|\b__t\)) \+\n'';/g; + + /** Used to match HTML entities and HTML characters. */ + var reEscapedHtml = /&(?:amp|lt|gt|quot|#39);/g, + reUnescapedHtml = /[&<>"']/g, + reHasEscapedHtml = RegExp(reEscapedHtml.source), + reHasUnescapedHtml = RegExp(reUnescapedHtml.source); + + /** Used to match template delimiters. */ + var reEscape = /<%-([\s\S]+?)%>/g, + reEvaluate = /<%([\s\S]+?)%>/g, + reInterpolate = /<%=([\s\S]+?)%>/g; + + /** Used to match property names within property paths. */ + var reIsDeepProp = /\.|\[(?:[^[\]]*|(["'])(?:(?!\1)[^\\]|\\.)*?\1)\]/, + reIsPlainProp = /^\w*$/, + rePropName = /[^.[\]]+|\[(?:(-?\d+(?:\.\d+)?)|(["'])((?:(?!\2)[^\\]|\\.)*?)\2)\]|(?=(?:\.|\[\])(?:\.|\[\]|$))/g; + + /** + * Used to match `RegExp` + * [syntax characters](http://ecma-international.org/ecma-262/7.0/#sec-patterns). + */ + var reRegExpChar = /[\\^$.*+?()[\]{}|]/g, + reHasRegExpChar = RegExp(reRegExpChar.source); + + /** Used to match leading and trailing whitespace. */ + var reTrim = /^\s+|\s+$/g, + reTrimStart = /^\s+/, + reTrimEnd = /\s+$/; + + /** Used to match wrap detail comments. */ + var reWrapComment = /\{(?:\n\/\* \[wrapped with .+\] \*\/)?\n?/, + reWrapDetails = /\{\n\/\* \[wrapped with (.+)\] \*/, + reSplitDetails = /,? & /; + + /** Used to match words composed of alphanumeric characters. */ + var reAsciiWord = /[^\x00-\x2f\x3a-\x40\x5b-\x60\x7b-\x7f]+/g; + + /** Used to match backslashes in property paths. */ + var reEscapeChar = /\\(\\)?/g; + + /** + * Used to match + * [ES template delimiters](http://ecma-international.org/ecma-262/7.0/#sec-template-literal-lexical-components). + */ + var reEsTemplate = /\$\{([^\\}]*(?:\\.[^\\}]*)*)\}/g; + + /** Used to match `RegExp` flags from their coerced string values. */ + var reFlags = /\w*$/; + + /** Used to detect bad signed hexadecimal string values. */ + var reIsBadHex = /^[-+]0x[0-9a-f]+$/i; + + /** Used to detect binary string values. */ + var reIsBinary = /^0b[01]+$/i; + + /** Used to detect host constructors (Safari). */ + var reIsHostCtor = /^\[object .+?Constructor\]$/; + + /** Used to detect octal string values. */ + var reIsOctal = /^0o[0-7]+$/i; + + /** Used to detect unsigned integer values. */ + var reIsUint = /^(?:0|[1-9]\d*)$/; + + /** Used to match Latin Unicode letters (excluding mathematical operators). */ + var reLatin = /[\xc0-\xd6\xd8-\xf6\xf8-\xff\u0100-\u017f]/g; + + /** Used to ensure capturing order of template delimiters. */ + var reNoMatch = /($^)/; + + /** Used to match unescaped characters in compiled string literals. */ + var reUnescapedString = /['\n\r\u2028\u2029\\]/g; + + /** Used to compose unicode character classes. */ + var rsAstralRange = '\\ud800-\\udfff', + rsComboMarksRange = '\\u0300-\\u036f', + reComboHalfMarksRange = '\\ufe20-\\ufe2f', + rsComboSymbolsRange = '\\u20d0-\\u20ff', + rsComboRange = rsComboMarksRange + reComboHalfMarksRange + rsComboSymbolsRange, + rsDingbatRange = '\\u2700-\\u27bf', + rsLowerRange = 'a-z\\xdf-\\xf6\\xf8-\\xff', + rsMathOpRange = '\\xac\\xb1\\xd7\\xf7', + rsNonCharRange = '\\x00-\\x2f\\x3a-\\x40\\x5b-\\x60\\x7b-\\xbf', + rsPunctuationRange = '\\u2000-\\u206f', + rsSpaceRange = ' \\t\\x0b\\f\\xa0\\ufeff\\n\\r\\u2028\\u2029\\u1680\\u180e\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200a\\u202f\\u205f\\u3000', + rsUpperRange = 'A-Z\\xc0-\\xd6\\xd8-\\xde', + rsVarRange = '\\ufe0e\\ufe0f', + rsBreakRange = rsMathOpRange + rsNonCharRange + rsPunctuationRange + rsSpaceRange; + + /** Used to compose unicode capture groups. */ + var rsApos = "['\u2019]", + rsAstral = '[' + rsAstralRange + ']', + rsBreak = '[' + rsBreakRange + ']', + rsCombo = '[' + rsComboRange + ']', + rsDigits = '\\d+', + rsDingbat = '[' + rsDingbatRange + ']', + rsLower = '[' + rsLowerRange + ']', + rsMisc = '[^' + rsAstralRange + rsBreakRange + rsDigits + rsDingbatRange + rsLowerRange + rsUpperRange + ']', + rsFitz = '\\ud83c[\\udffb-\\udfff]', + rsModifier = '(?:' + rsCombo + '|' + rsFitz + ')', + rsNonAstral = '[^' + rsAstralRange + ']', + rsRegional = '(?:\\ud83c[\\udde6-\\uddff]){2}', + rsSurrPair = '[\\ud800-\\udbff][\\udc00-\\udfff]', + rsUpper = '[' + rsUpperRange + ']', + rsZWJ = '\\u200d'; + + /** Used to compose unicode regexes. */ + var rsMiscLower = '(?:' + rsLower + '|' + rsMisc + ')', + rsMiscUpper = '(?:' + rsUpper + '|' + rsMisc + ')', + rsOptContrLower = '(?:' + rsApos + '(?:d|ll|m|re|s|t|ve))?', + rsOptContrUpper = '(?:' + rsApos + '(?:D|LL|M|RE|S|T|VE))?', + reOptMod = rsModifier + '?', + rsOptVar = '[' + rsVarRange + ']?', + rsOptJoin = '(?:' + rsZWJ + '(?:' + [rsNonAstral, rsRegional, rsSurrPair].join('|') + ')' + rsOptVar + reOptMod + ')*', + rsOrdLower = '\\d*(?:1st|2nd|3rd|(?![123])\\dth)(?=\\b|[A-Z_])', + rsOrdUpper = '\\d*(?:1ST|2ND|3RD|(?![123])\\dTH)(?=\\b|[a-z_])', + rsSeq = rsOptVar + reOptMod + rsOptJoin, + rsEmoji = '(?:' + [rsDingbat, rsRegional, rsSurrPair].join('|') + ')' + rsSeq, + rsSymbol = '(?:' + [rsNonAstral + rsCombo + '?', rsCombo, rsRegional, rsSurrPair, rsAstral].join('|') + ')'; + + /** Used to match apostrophes. */ + var reApos = RegExp(rsApos, 'g'); + + /** + * Used to match [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks) and + * [combining diacritical marks for symbols](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks_for_Symbols). + */ + var reComboMark = RegExp(rsCombo, 'g'); + + /** Used to match [string symbols](https://mathiasbynens.be/notes/javascript-unicode). */ + var reUnicode = RegExp(rsFitz + '(?=' + rsFitz + ')|' + rsSymbol + rsSeq, 'g'); + + /** Used to match complex or compound words. */ + var reUnicodeWord = RegExp([ + rsUpper + '?' + rsLower + '+' + rsOptContrLower + '(?=' + [rsBreak, rsUpper, '$'].join('|') + ')', + rsMiscUpper + '+' + rsOptContrUpper + '(?=' + [rsBreak, rsUpper + rsMiscLower, '$'].join('|') + ')', + rsUpper + '?' + rsMiscLower + '+' + rsOptContrLower, + rsUpper + '+' + rsOptContrUpper, + rsOrdUpper, + rsOrdLower, + rsDigits, + rsEmoji + ].join('|'), 'g'); + + /** Used to detect strings with [zero-width joiners or code points from the astral planes](http://eev.ee/blog/2015/09/12/dark-corners-of-unicode/). */ + var reHasUnicode = RegExp('[' + rsZWJ + rsAstralRange + rsComboRange + rsVarRange + ']'); + + /** Used to detect strings that need a more robust regexp to match words. */ + var reHasUnicodeWord = /[a-z][A-Z]|[A-Z]{2}[a-z]|[0-9][a-zA-Z]|[a-zA-Z][0-9]|[^a-zA-Z0-9 ]/; + + /** Used to assign default `context` object properties. */ + var contextProps = [ + 'Array', 'Buffer', 'DataView', 'Date', 'Error', 'Float32Array', 'Float64Array', + 'Function', 'Int8Array', 'Int16Array', 'Int32Array', 'Map', 'Math', 'Object', + 'Promise', 'RegExp', 'Set', 'String', 'Symbol', 'TypeError', 'Uint8Array', + 'Uint8ClampedArray', 'Uint16Array', 'Uint32Array', 'WeakMap', + '_', 'clearTimeout', 'isFinite', 'parseInt', 'setTimeout' + ]; + + /** Used to make template sourceURLs easier to identify. */ + var templateCounter = -1; + + /** Used to identify `toStringTag` values of typed arrays. */ + var typedArrayTags = {}; + typedArrayTags[float32Tag] = typedArrayTags[float64Tag] = + typedArrayTags[int8Tag] = typedArrayTags[int16Tag] = + typedArrayTags[int32Tag] = typedArrayTags[uint8Tag] = + typedArrayTags[uint8ClampedTag] = typedArrayTags[uint16Tag] = + typedArrayTags[uint32Tag] = true; + typedArrayTags[argsTag] = typedArrayTags[arrayTag] = + typedArrayTags[arrayBufferTag] = typedArrayTags[boolTag] = + typedArrayTags[dataViewTag] = typedArrayTags[dateTag] = + typedArrayTags[errorTag] = typedArrayTags[funcTag] = + typedArrayTags[mapTag] = typedArrayTags[numberTag] = + typedArrayTags[objectTag] = typedArrayTags[regexpTag] = + typedArrayTags[setTag] = typedArrayTags[stringTag] = + typedArrayTags[weakMapTag] = false; + + /** Used to identify `toStringTag` values supported by `_.clone`. */ + var cloneableTags = {}; + cloneableTags[argsTag] = cloneableTags[arrayTag] = + cloneableTags[arrayBufferTag] = cloneableTags[dataViewTag] = + cloneableTags[boolTag] = cloneableTags[dateTag] = + cloneableTags[float32Tag] = cloneableTags[float64Tag] = + cloneableTags[int8Tag] = cloneableTags[int16Tag] = + cloneableTags[int32Tag] = cloneableTags[mapTag] = + cloneableTags[numberTag] = cloneableTags[objectTag] = + cloneableTags[regexpTag] = cloneableTags[setTag] = + cloneableTags[stringTag] = cloneableTags[symbolTag] = + cloneableTags[uint8Tag] = cloneableTags[uint8ClampedTag] = + cloneableTags[uint16Tag] = cloneableTags[uint32Tag] = true; + cloneableTags[errorTag] = cloneableTags[funcTag] = + cloneableTags[weakMapTag] = false; + + /** Used to map Latin Unicode letters to basic Latin letters. */ + var deburredLetters = { + // Latin-1 Supplement block. + '\xc0': 'A', '\xc1': 'A', '\xc2': 'A', '\xc3': 'A', '\xc4': 'A', '\xc5': 'A', + '\xe0': 'a', '\xe1': 'a', '\xe2': 'a', '\xe3': 'a', '\xe4': 'a', '\xe5': 'a', + '\xc7': 'C', '\xe7': 'c', + '\xd0': 'D', '\xf0': 'd', + '\xc8': 'E', '\xc9': 'E', '\xca': 'E', '\xcb': 'E', + '\xe8': 'e', '\xe9': 'e', '\xea': 'e', '\xeb': 'e', + '\xcc': 'I', '\xcd': 'I', '\xce': 'I', '\xcf': 'I', + '\xec': 'i', '\xed': 'i', '\xee': 'i', '\xef': 'i', + '\xd1': 'N', '\xf1': 'n', + '\xd2': 'O', '\xd3': 'O', '\xd4': 'O', '\xd5': 'O', '\xd6': 'O', '\xd8': 'O', + '\xf2': 'o', '\xf3': 'o', '\xf4': 'o', '\xf5': 'o', '\xf6': 'o', '\xf8': 'o', + '\xd9': 'U', '\xda': 'U', '\xdb': 'U', '\xdc': 'U', + '\xf9': 'u', '\xfa': 'u', '\xfb': 'u', '\xfc': 'u', + '\xdd': 'Y', '\xfd': 'y', '\xff': 'y', + '\xc6': 'Ae', '\xe6': 'ae', + '\xde': 'Th', '\xfe': 'th', + '\xdf': 'ss', + // Latin Extended-A block. + '\u0100': 'A', '\u0102': 'A', '\u0104': 'A', + '\u0101': 'a', '\u0103': 'a', '\u0105': 'a', + '\u0106': 'C', '\u0108': 'C', '\u010a': 'C', '\u010c': 'C', + '\u0107': 'c', '\u0109': 'c', '\u010b': 'c', '\u010d': 'c', + '\u010e': 'D', '\u0110': 'D', '\u010f': 'd', '\u0111': 'd', + '\u0112': 'E', '\u0114': 'E', '\u0116': 'E', '\u0118': 'E', '\u011a': 'E', + '\u0113': 'e', '\u0115': 'e', '\u0117': 'e', '\u0119': 'e', '\u011b': 'e', + '\u011c': 'G', '\u011e': 'G', '\u0120': 'G', '\u0122': 'G', + '\u011d': 'g', '\u011f': 'g', '\u0121': 'g', '\u0123': 'g', + '\u0124': 'H', '\u0126': 'H', '\u0125': 'h', '\u0127': 'h', + '\u0128': 'I', '\u012a': 'I', '\u012c': 'I', '\u012e': 'I', '\u0130': 'I', + '\u0129': 'i', '\u012b': 'i', '\u012d': 'i', '\u012f': 'i', '\u0131': 'i', + '\u0134': 'J', '\u0135': 'j', + '\u0136': 'K', '\u0137': 'k', '\u0138': 'k', + '\u0139': 'L', '\u013b': 'L', '\u013d': 'L', '\u013f': 'L', '\u0141': 'L', + '\u013a': 'l', '\u013c': 'l', '\u013e': 'l', '\u0140': 'l', '\u0142': 'l', + '\u0143': 'N', '\u0145': 'N', '\u0147': 'N', '\u014a': 'N', + '\u0144': 'n', '\u0146': 'n', '\u0148': 'n', '\u014b': 'n', + '\u014c': 'O', '\u014e': 'O', '\u0150': 'O', + '\u014d': 'o', '\u014f': 'o', '\u0151': 'o', + '\u0154': 'R', '\u0156': 'R', '\u0158': 'R', + '\u0155': 'r', '\u0157': 'r', '\u0159': 'r', + '\u015a': 'S', '\u015c': 'S', '\u015e': 'S', '\u0160': 'S', + '\u015b': 's', '\u015d': 's', '\u015f': 's', '\u0161': 's', + '\u0162': 'T', '\u0164': 'T', '\u0166': 'T', + '\u0163': 't', '\u0165': 't', '\u0167': 't', + '\u0168': 'U', '\u016a': 'U', '\u016c': 'U', '\u016e': 'U', '\u0170': 'U', '\u0172': 'U', + '\u0169': 'u', '\u016b': 'u', '\u016d': 'u', '\u016f': 'u', '\u0171': 'u', '\u0173': 'u', + '\u0174': 'W', '\u0175': 'w', + '\u0176': 'Y', '\u0177': 'y', '\u0178': 'Y', + '\u0179': 'Z', '\u017b': 'Z', '\u017d': 'Z', + '\u017a': 'z', '\u017c': 'z', '\u017e': 'z', + '\u0132': 'IJ', '\u0133': 'ij', + '\u0152': 'Oe', '\u0153': 'oe', + '\u0149': "'n", '\u017f': 's' + }; + + /** Used to map characters to HTML entities. */ + var htmlEscapes = { + '&': '&', + '<': '<', + '>': '>', + '"': '"', + "'": ''' + }; + + /** Used to map HTML entities to characters. */ + var htmlUnescapes = { + '&': '&', + '<': '<', + '>': '>', + '"': '"', + ''': "'" + }; + + /** Used to escape characters for inclusion in compiled string literals. */ + var stringEscapes = { + '\\': '\\', + "'": "'", + '\n': 'n', + '\r': 'r', + '\u2028': 'u2028', + '\u2029': 'u2029' + }; + + /** Built-in method references without a dependency on `root`. */ + var freeParseFloat = parseFloat, + freeParseInt = parseInt; + + /** Detect free variable `global` from Node.js. */ + var freeGlobal = typeof global == 'object' && global && global.Object === Object && global; + + /** Detect free variable `self`. */ + var freeSelf = typeof self == 'object' && self && self.Object === Object && self; + + /** Used as a reference to the global object. */ + var root = freeGlobal || freeSelf || Function('return this')(); + + /** Detect free variable `exports`. */ + var freeExports = true && exports && !exports.nodeType && exports; + + /** Detect free variable `module`. */ + var freeModule = freeExports && typeof module == 'object' && module && !module.nodeType && module; + + /** Detect the popular CommonJS extension `module.exports`. */ + var moduleExports = freeModule && freeModule.exports === freeExports; + + /** Detect free variable `process` from Node.js. */ + var freeProcess = moduleExports && freeGlobal.process; + + /** Used to access faster Node.js helpers. */ + var nodeUtil = (function() { + try { + // Use `util.types` for Node.js 10+. + var types = freeModule && freeModule.require && freeModule.require('util').types; + + if (types) { + return types; + } + + // Legacy `process.binding('util')` for Node.js < 10. + return freeProcess && freeProcess.binding && freeProcess.binding('util'); + } catch (e) {} + }()); + + /* Node.js helper references. */ + var nodeIsArrayBuffer = nodeUtil && nodeUtil.isArrayBuffer, + nodeIsDate = nodeUtil && nodeUtil.isDate, + nodeIsMap = nodeUtil && nodeUtil.isMap, + nodeIsRegExp = nodeUtil && nodeUtil.isRegExp, + nodeIsSet = nodeUtil && nodeUtil.isSet, + nodeIsTypedArray = nodeUtil && nodeUtil.isTypedArray; + + /*--------------------------------------------------------------------------*/ + + /** + * A faster alternative to `Function#apply`, this function invokes `func` + * with the `this` binding of `thisArg` and the arguments of `args`. + * + * @private + * @param {Function} func The function to invoke. + * @param {*} thisArg The `this` binding of `func`. + * @param {Array} args The arguments to invoke `func` with. + * @returns {*} Returns the result of `func`. + */ + function apply(func, thisArg, args) { + switch (args.length) { + case 0: return func.call(thisArg); + case 1: return func.call(thisArg, args[0]); + case 2: return func.call(thisArg, args[0], args[1]); + case 3: return func.call(thisArg, args[0], args[1], args[2]); + } + return func.apply(thisArg, args); + } + + /** + * A specialized version of `baseAggregator` for arrays. + * + * @private + * @param {Array} [array] The array to iterate over. + * @param {Function} setter The function to set `accumulator` values. + * @param {Function} iteratee The iteratee to transform keys. + * @param {Object} accumulator The initial aggregated object. + * @returns {Function} Returns `accumulator`. + */ + function arrayAggregator(array, setter, iteratee, accumulator) { + var index = -1, + length = array == null ? 0 : array.length; + + while (++index < length) { + var value = array[index]; + setter(accumulator, value, iteratee(value), array); + } + return accumulator; + } + + /** + * A specialized version of `_.forEach` for arrays without support for + * iteratee shorthands. + * + * @private + * @param {Array} [array] The array to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @returns {Array} Returns `array`. + */ + function arrayEach(array, iteratee) { + var index = -1, + length = array == null ? 0 : array.length; + + while (++index < length) { + if (iteratee(array[index], index, array) === false) { + break; + } + } + return array; + } + + /** + * A specialized version of `_.forEachRight` for arrays without support for + * iteratee shorthands. + * + * @private + * @param {Array} [array] The array to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @returns {Array} Returns `array`. + */ + function arrayEachRight(array, iteratee) { + var length = array == null ? 0 : array.length; + + while (length--) { + if (iteratee(array[length], length, array) === false) { + break; + } + } + return array; + } + + /** + * A specialized version of `_.every` for arrays without support for + * iteratee shorthands. + * + * @private + * @param {Array} [array] The array to iterate over. + * @param {Function} predicate The function invoked per iteration. + * @returns {boolean} Returns `true` if all elements pass the predicate check, + * else `false`. + */ + function arrayEvery(array, predicate) { + var index = -1, + length = array == null ? 0 : array.length; + + while (++index < length) { + if (!predicate(array[index], index, array)) { + return false; + } + } + return true; + } + + /** + * A specialized version of `_.filter` for arrays without support for + * iteratee shorthands. + * + * @private + * @param {Array} [array] The array to iterate over. + * @param {Function} predicate The function invoked per iteration. + * @returns {Array} Returns the new filtered array. + */ + function arrayFilter(array, predicate) { + var index = -1, + length = array == null ? 0 : array.length, + resIndex = 0, + result = []; + + while (++index < length) { + var value = array[index]; + if (predicate(value, index, array)) { + result[resIndex++] = value; + } + } + return result; + } + + /** + * A specialized version of `_.includes` for arrays without support for + * specifying an index to search from. + * + * @private + * @param {Array} [array] The array to inspect. + * @param {*} target The value to search for. + * @returns {boolean} Returns `true` if `target` is found, else `false`. + */ + function arrayIncludes(array, value) { + var length = array == null ? 0 : array.length; + return !!length && baseIndexOf(array, value, 0) > -1; + } + + /** + * This function is like `arrayIncludes` except that it accepts a comparator. + * + * @private + * @param {Array} [array] The array to inspect. + * @param {*} target The value to search for. + * @param {Function} comparator The comparator invoked per element. + * @returns {boolean} Returns `true` if `target` is found, else `false`. + */ + function arrayIncludesWith(array, value, comparator) { + var index = -1, + length = array == null ? 0 : array.length; + + while (++index < length) { + if (comparator(value, array[index])) { + return true; + } + } + return false; + } + + /** + * A specialized version of `_.map` for arrays without support for iteratee + * shorthands. + * + * @private + * @param {Array} [array] The array to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @returns {Array} Returns the new mapped array. + */ + function arrayMap(array, iteratee) { + var index = -1, + length = array == null ? 0 : array.length, + result = Array(length); + + while (++index < length) { + result[index] = iteratee(array[index], index, array); + } + return result; + } + + /** + * Appends the elements of `values` to `array`. + * + * @private + * @param {Array} array The array to modify. + * @param {Array} values The values to append. + * @returns {Array} Returns `array`. + */ + function arrayPush(array, values) { + var index = -1, + length = values.length, + offset = array.length; + + while (++index < length) { + array[offset + index] = values[index]; + } + return array; + } + + /** + * A specialized version of `_.reduce` for arrays without support for + * iteratee shorthands. + * + * @private + * @param {Array} [array] The array to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @param {*} [accumulator] The initial value. + * @param {boolean} [initAccum] Specify using the first element of `array` as + * the initial value. + * @returns {*} Returns the accumulated value. + */ + function arrayReduce(array, iteratee, accumulator, initAccum) { + var index = -1, + length = array == null ? 0 : array.length; + + if (initAccum && length) { + accumulator = array[++index]; + } + while (++index < length) { + accumulator = iteratee(accumulator, array[index], index, array); + } + return accumulator; + } + + /** + * A specialized version of `_.reduceRight` for arrays without support for + * iteratee shorthands. + * + * @private + * @param {Array} [array] The array to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @param {*} [accumulator] The initial value. + * @param {boolean} [initAccum] Specify using the last element of `array` as + * the initial value. + * @returns {*} Returns the accumulated value. + */ + function arrayReduceRight(array, iteratee, accumulator, initAccum) { + var length = array == null ? 0 : array.length; + if (initAccum && length) { + accumulator = array[--length]; + } + while (length--) { + accumulator = iteratee(accumulator, array[length], length, array); + } + return accumulator; + } + + /** + * A specialized version of `_.some` for arrays without support for iteratee + * shorthands. + * + * @private + * @param {Array} [array] The array to iterate over. + * @param {Function} predicate The function invoked per iteration. + * @returns {boolean} Returns `true` if any element passes the predicate check, + * else `false`. + */ + function arraySome(array, predicate) { + var index = -1, + length = array == null ? 0 : array.length; + + while (++index < length) { + if (predicate(array[index], index, array)) { + return true; + } + } + return false; + } + + /** + * Gets the size of an ASCII `string`. + * + * @private + * @param {string} string The string inspect. + * @returns {number} Returns the string size. + */ + var asciiSize = baseProperty('length'); + + /** + * Converts an ASCII `string` to an array. + * + * @private + * @param {string} string The string to convert. + * @returns {Array} Returns the converted array. + */ + function asciiToArray(string) { + return string.split(''); + } + + /** + * Splits an ASCII `string` into an array of its words. + * + * @private + * @param {string} The string to inspect. + * @returns {Array} Returns the words of `string`. + */ + function asciiWords(string) { + return string.match(reAsciiWord) || []; + } + + /** + * The base implementation of methods like `_.findKey` and `_.findLastKey`, + * without support for iteratee shorthands, which iterates over `collection` + * using `eachFunc`. + * + * @private + * @param {Array|Object} collection The collection to inspect. + * @param {Function} predicate The function invoked per iteration. + * @param {Function} eachFunc The function to iterate over `collection`. + * @returns {*} Returns the found element or its key, else `undefined`. + */ + function baseFindKey(collection, predicate, eachFunc) { + var result; + eachFunc(collection, function(value, key, collection) { + if (predicate(value, key, collection)) { + result = key; + return false; + } + }); + return result; + } + + /** + * The base implementation of `_.findIndex` and `_.findLastIndex` without + * support for iteratee shorthands. + * + * @private + * @param {Array} array The array to inspect. + * @param {Function} predicate The function invoked per iteration. + * @param {number} fromIndex The index to search from. + * @param {boolean} [fromRight] Specify iterating from right to left. + * @returns {number} Returns the index of the matched value, else `-1`. + */ + function baseFindIndex(array, predicate, fromIndex, fromRight) { + var length = array.length, + index = fromIndex + (fromRight ? 1 : -1); + + while ((fromRight ? index-- : ++index < length)) { + if (predicate(array[index], index, array)) { + return index; + } + } + return -1; + } + + /** + * The base implementation of `_.indexOf` without `fromIndex` bounds checks. + * + * @private + * @param {Array} array The array to inspect. + * @param {*} value The value to search for. + * @param {number} fromIndex The index to search from. + * @returns {number} Returns the index of the matched value, else `-1`. + */ + function baseIndexOf(array, value, fromIndex) { + return value === value + ? strictIndexOf(array, value, fromIndex) + : baseFindIndex(array, baseIsNaN, fromIndex); + } + + /** + * This function is like `baseIndexOf` except that it accepts a comparator. + * + * @private + * @param {Array} array The array to inspect. + * @param {*} value The value to search for. + * @param {number} fromIndex The index to search from. + * @param {Function} comparator The comparator invoked per element. + * @returns {number} Returns the index of the matched value, else `-1`. + */ + function baseIndexOfWith(array, value, fromIndex, comparator) { + var index = fromIndex - 1, + length = array.length; + + while (++index < length) { + if (comparator(array[index], value)) { + return index; + } + } + return -1; + } + + /** + * The base implementation of `_.isNaN` without support for number objects. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`. + */ + function baseIsNaN(value) { + return value !== value; + } + + /** + * The base implementation of `_.mean` and `_.meanBy` without support for + * iteratee shorthands. + * + * @private + * @param {Array} array The array to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @returns {number} Returns the mean. + */ + function baseMean(array, iteratee) { + var length = array == null ? 0 : array.length; + return length ? (baseSum(array, iteratee) / length) : NAN; + } + + /** + * The base implementation of `_.property` without support for deep paths. + * + * @private + * @param {string} key The key of the property to get. + * @returns {Function} Returns the new accessor function. + */ + function baseProperty(key) { + return function(object) { + return object == null ? undefined : object[key]; + }; + } + + /** + * The base implementation of `_.propertyOf` without support for deep paths. + * + * @private + * @param {Object} object The object to query. + * @returns {Function} Returns the new accessor function. + */ + function basePropertyOf(object) { + return function(key) { + return object == null ? undefined : object[key]; + }; + } + + /** + * The base implementation of `_.reduce` and `_.reduceRight`, without support + * for iteratee shorthands, which iterates over `collection` using `eachFunc`. + * + * @private + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @param {*} accumulator The initial value. + * @param {boolean} initAccum Specify using the first or last element of + * `collection` as the initial value. + * @param {Function} eachFunc The function to iterate over `collection`. + * @returns {*} Returns the accumulated value. + */ + function baseReduce(collection, iteratee, accumulator, initAccum, eachFunc) { + eachFunc(collection, function(value, index, collection) { + accumulator = initAccum + ? (initAccum = false, value) + : iteratee(accumulator, value, index, collection); + }); + return accumulator; + } + + /** + * The base implementation of `_.sortBy` which uses `comparer` to define the + * sort order of `array` and replaces criteria objects with their corresponding + * values. + * + * @private + * @param {Array} array The array to sort. + * @param {Function} comparer The function to define sort order. + * @returns {Array} Returns `array`. + */ + function baseSortBy(array, comparer) { + var length = array.length; + + array.sort(comparer); + while (length--) { + array[length] = array[length].value; + } + return array; + } + + /** + * The base implementation of `_.sum` and `_.sumBy` without support for + * iteratee shorthands. + * + * @private + * @param {Array} array The array to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @returns {number} Returns the sum. + */ + function baseSum(array, iteratee) { + var result, + index = -1, + length = array.length; + + while (++index < length) { + var current = iteratee(array[index]); + if (current !== undefined) { + result = result === undefined ? current : (result + current); + } + } + return result; + } + + /** + * The base implementation of `_.times` without support for iteratee shorthands + * or max array length checks. + * + * @private + * @param {number} n The number of times to invoke `iteratee`. + * @param {Function} iteratee The function invoked per iteration. + * @returns {Array} Returns the array of results. + */ + function baseTimes(n, iteratee) { + var index = -1, + result = Array(n); + + while (++index < n) { + result[index] = iteratee(index); + } + return result; + } + + /** + * The base implementation of `_.toPairs` and `_.toPairsIn` which creates an array + * of key-value pairs for `object` corresponding to the property names of `props`. + * + * @private + * @param {Object} object The object to query. + * @param {Array} props The property names to get values for. + * @returns {Object} Returns the key-value pairs. + */ + function baseToPairs(object, props) { + return arrayMap(props, function(key) { + return [key, object[key]]; + }); + } + + /** + * The base implementation of `_.unary` without support for storing metadata. + * + * @private + * @param {Function} func The function to cap arguments for. + * @returns {Function} Returns the new capped function. + */ + function baseUnary(func) { + return function(value) { + return func(value); + }; + } + + /** + * The base implementation of `_.values` and `_.valuesIn` which creates an + * array of `object` property values corresponding to the property names + * of `props`. + * + * @private + * @param {Object} object The object to query. + * @param {Array} props The property names to get values for. + * @returns {Object} Returns the array of property values. + */ + function baseValues(object, props) { + return arrayMap(props, function(key) { + return object[key]; + }); + } + + /** + * Checks if a `cache` value for `key` exists. + * + * @private + * @param {Object} cache The cache to query. + * @param {string} key The key of the entry to check. + * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`. + */ + function cacheHas(cache, key) { + return cache.has(key); + } + + /** + * Used by `_.trim` and `_.trimStart` to get the index of the first string symbol + * that is not found in the character symbols. + * + * @private + * @param {Array} strSymbols The string symbols to inspect. + * @param {Array} chrSymbols The character symbols to find. + * @returns {number} Returns the index of the first unmatched string symbol. + */ + function charsStartIndex(strSymbols, chrSymbols) { + var index = -1, + length = strSymbols.length; + + while (++index < length && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {} + return index; + } + + /** + * Used by `_.trim` and `_.trimEnd` to get the index of the last string symbol + * that is not found in the character symbols. + * + * @private + * @param {Array} strSymbols The string symbols to inspect. + * @param {Array} chrSymbols The character symbols to find. + * @returns {number} Returns the index of the last unmatched string symbol. + */ + function charsEndIndex(strSymbols, chrSymbols) { + var index = strSymbols.length; + + while (index-- && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {} + return index; + } + + /** + * Gets the number of `placeholder` occurrences in `array`. + * + * @private + * @param {Array} array The array to inspect. + * @param {*} placeholder The placeholder to search for. + * @returns {number} Returns the placeholder count. + */ + function countHolders(array, placeholder) { + var length = array.length, + result = 0; + + while (length--) { + if (array[length] === placeholder) { + ++result; + } + } + return result; + } + + /** + * Used by `_.deburr` to convert Latin-1 Supplement and Latin Extended-A + * letters to basic Latin letters. + * + * @private + * @param {string} letter The matched letter to deburr. + * @returns {string} Returns the deburred letter. + */ + var deburrLetter = basePropertyOf(deburredLetters); + + /** + * Used by `_.escape` to convert characters to HTML entities. + * + * @private + * @param {string} chr The matched character to escape. + * @returns {string} Returns the escaped character. + */ + var escapeHtmlChar = basePropertyOf(htmlEscapes); + + /** + * Used by `_.template` to escape characters for inclusion in compiled string literals. + * + * @private + * @param {string} chr The matched character to escape. + * @returns {string} Returns the escaped character. + */ + function escapeStringChar(chr) { + return '\\' + stringEscapes[chr]; + } + + /** + * Gets the value at `key` of `object`. + * + * @private + * @param {Object} [object] The object to query. + * @param {string} key The key of the property to get. + * @returns {*} Returns the property value. + */ + function getValue(object, key) { + return object == null ? undefined : object[key]; + } + + /** + * Checks if `string` contains Unicode symbols. + * + * @private + * @param {string} string The string to inspect. + * @returns {boolean} Returns `true` if a symbol is found, else `false`. + */ + function hasUnicode(string) { + return reHasUnicode.test(string); + } + + /** + * Checks if `string` contains a word composed of Unicode symbols. + * + * @private + * @param {string} string The string to inspect. + * @returns {boolean} Returns `true` if a word is found, else `false`. + */ + function hasUnicodeWord(string) { + return reHasUnicodeWord.test(string); + } + + /** + * Converts `iterator` to an array. + * + * @private + * @param {Object} iterator The iterator to convert. + * @returns {Array} Returns the converted array. + */ + function iteratorToArray(iterator) { + var data, + result = []; + + while (!(data = iterator.next()).done) { + result.push(data.value); + } + return result; + } + + /** + * Converts `map` to its key-value pairs. + * + * @private + * @param {Object} map The map to convert. + * @returns {Array} Returns the key-value pairs. + */ + function mapToArray(map) { + var index = -1, + result = Array(map.size); + + map.forEach(function(value, key) { + result[++index] = [key, value]; + }); + return result; + } + + /** + * Creates a unary function that invokes `func` with its argument transformed. + * + * @private + * @param {Function} func The function to wrap. + * @param {Function} transform The argument transform. + * @returns {Function} Returns the new function. + */ + function overArg(func, transform) { + return function(arg) { + return func(transform(arg)); + }; + } + + /** + * Replaces all `placeholder` elements in `array` with an internal placeholder + * and returns an array of their indexes. + * + * @private + * @param {Array} array The array to modify. + * @param {*} placeholder The placeholder to replace. + * @returns {Array} Returns the new array of placeholder indexes. + */ + function replaceHolders(array, placeholder) { + var index = -1, + length = array.length, + resIndex = 0, + result = []; + + while (++index < length) { + var value = array[index]; + if (value === placeholder || value === PLACEHOLDER) { + array[index] = PLACEHOLDER; + result[resIndex++] = index; + } + } + return result; + } + + /** + * Converts `set` to an array of its values. + * + * @private + * @param {Object} set The set to convert. + * @returns {Array} Returns the values. + */ + function setToArray(set) { + var index = -1, + result = Array(set.size); + + set.forEach(function(value) { + result[++index] = value; + }); + return result; + } + + /** + * Converts `set` to its value-value pairs. + * + * @private + * @param {Object} set The set to convert. + * @returns {Array} Returns the value-value pairs. + */ + function setToPairs(set) { + var index = -1, + result = Array(set.size); + + set.forEach(function(value) { + result[++index] = [value, value]; + }); + return result; + } + + /** + * A specialized version of `_.indexOf` which performs strict equality + * comparisons of values, i.e. `===`. + * + * @private + * @param {Array} array The array to inspect. + * @param {*} value The value to search for. + * @param {number} fromIndex The index to search from. + * @returns {number} Returns the index of the matched value, else `-1`. + */ + function strictIndexOf(array, value, fromIndex) { + var index = fromIndex - 1, + length = array.length; + + while (++index < length) { + if (array[index] === value) { + return index; + } + } + return -1; + } + + /** + * A specialized version of `_.lastIndexOf` which performs strict equality + * comparisons of values, i.e. `===`. + * + * @private + * @param {Array} array The array to inspect. + * @param {*} value The value to search for. + * @param {number} fromIndex The index to search from. + * @returns {number} Returns the index of the matched value, else `-1`. + */ + function strictLastIndexOf(array, value, fromIndex) { + var index = fromIndex + 1; + while (index--) { + if (array[index] === value) { + return index; + } + } + return index; + } + + /** + * Gets the number of symbols in `string`. + * + * @private + * @param {string} string The string to inspect. + * @returns {number} Returns the string size. + */ + function stringSize(string) { + return hasUnicode(string) + ? unicodeSize(string) + : asciiSize(string); + } + + /** + * Converts `string` to an array. + * + * @private + * @param {string} string The string to convert. + * @returns {Array} Returns the converted array. + */ + function stringToArray(string) { + return hasUnicode(string) + ? unicodeToArray(string) + : asciiToArray(string); + } + + /** + * Used by `_.unescape` to convert HTML entities to characters. + * + * @private + * @param {string} chr The matched character to unescape. + * @returns {string} Returns the unescaped character. + */ + var unescapeHtmlChar = basePropertyOf(htmlUnescapes); + + /** + * Gets the size of a Unicode `string`. + * + * @private + * @param {string} string The string inspect. + * @returns {number} Returns the string size. + */ + function unicodeSize(string) { + var result = reUnicode.lastIndex = 0; + while (reUnicode.test(string)) { + ++result; + } + return result; + } + + /** + * Converts a Unicode `string` to an array. + * + * @private + * @param {string} string The string to convert. + * @returns {Array} Returns the converted array. + */ + function unicodeToArray(string) { + return string.match(reUnicode) || []; + } + + /** + * Splits a Unicode `string` into an array of its words. + * + * @private + * @param {string} The string to inspect. + * @returns {Array} Returns the words of `string`. + */ + function unicodeWords(string) { + return string.match(reUnicodeWord) || []; + } + + /*--------------------------------------------------------------------------*/ + + /** + * Create a new pristine `lodash` function using the `context` object. + * + * @static + * @memberOf _ + * @since 1.1.0 + * @category Util + * @param {Object} [context=root] The context object. + * @returns {Function} Returns a new `lodash` function. + * @example + * + * _.mixin({ 'foo': _.constant('foo') }); + * + * var lodash = _.runInContext(); + * lodash.mixin({ 'bar': lodash.constant('bar') }); + * + * _.isFunction(_.foo); + * // => true + * _.isFunction(_.bar); + * // => false + * + * lodash.isFunction(lodash.foo); + * // => false + * lodash.isFunction(lodash.bar); + * // => true + * + * // Create a suped-up `defer` in Node.js. + * var defer = _.runInContext({ 'setTimeout': setImmediate }).defer; + */ + var runInContext = (function runInContext(context) { + context = context == null ? root : _.defaults(root.Object(), context, _.pick(root, contextProps)); + + /** Built-in constructor references. */ + var Array = context.Array, + Date = context.Date, + Error = context.Error, + Function = context.Function, + Math = context.Math, + Object = context.Object, + RegExp = context.RegExp, + String = context.String, + TypeError = context.TypeError; + + /** Used for built-in method references. */ + var arrayProto = Array.prototype, + funcProto = Function.prototype, + objectProto = Object.prototype; + + /** Used to detect overreaching core-js shims. */ + var coreJsData = context['__core-js_shared__']; + + /** Used to resolve the decompiled source of functions. */ + var funcToString = funcProto.toString; + + /** Used to check objects for own properties. */ + var hasOwnProperty = objectProto.hasOwnProperty; + + /** Used to generate unique IDs. */ + var idCounter = 0; + + /** Used to detect methods masquerading as native. */ + var maskSrcKey = (function() { + var uid = /[^.]+$/.exec(coreJsData && coreJsData.keys && coreJsData.keys.IE_PROTO || ''); + return uid ? ('Symbol(src)_1.' + uid) : ''; + }()); + + /** + * Used to resolve the + * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring) + * of values. + */ + var nativeObjectToString = objectProto.toString; + + /** Used to infer the `Object` constructor. */ + var objectCtorString = funcToString.call(Object); + + /** Used to restore the original `_` reference in `_.noConflict`. */ + var oldDash = root._; + + /** Used to detect if a method is native. */ + var reIsNative = RegExp('^' + + funcToString.call(hasOwnProperty).replace(reRegExpChar, '\\$&') + .replace(/hasOwnProperty|(function).*?(?=\\\()| for .+?(?=\\\])/g, '$1.*?') + '$' + ); + + /** Built-in value references. */ + var Buffer = moduleExports ? context.Buffer : undefined, + Symbol = context.Symbol, + Uint8Array = context.Uint8Array, + allocUnsafe = Buffer ? Buffer.allocUnsafe : undefined, + getPrototype = overArg(Object.getPrototypeOf, Object), + objectCreate = Object.create, + propertyIsEnumerable = objectProto.propertyIsEnumerable, + splice = arrayProto.splice, + spreadableSymbol = Symbol ? Symbol.isConcatSpreadable : undefined, + symIterator = Symbol ? Symbol.iterator : undefined, + symToStringTag = Symbol ? Symbol.toStringTag : undefined; + + var defineProperty = (function() { + try { + var func = getNative(Object, 'defineProperty'); + func({}, '', {}); + return func; + } catch (e) {} + }()); + + /** Mocked built-ins. */ + var ctxClearTimeout = context.clearTimeout !== root.clearTimeout && context.clearTimeout, + ctxNow = Date && Date.now !== root.Date.now && Date.now, + ctxSetTimeout = context.setTimeout !== root.setTimeout && context.setTimeout; + + /* Built-in method references for those with the same name as other `lodash` methods. */ + var nativeCeil = Math.ceil, + nativeFloor = Math.floor, + nativeGetSymbols = Object.getOwnPropertySymbols, + nativeIsBuffer = Buffer ? Buffer.isBuffer : undefined, + nativeIsFinite = context.isFinite, + nativeJoin = arrayProto.join, + nativeKeys = overArg(Object.keys, Object), + nativeMax = Math.max, + nativeMin = Math.min, + nativeNow = Date.now, + nativeParseInt = context.parseInt, + nativeRandom = Math.random, + nativeReverse = arrayProto.reverse; + + /* Built-in method references that are verified to be native. */ + var DataView = getNative(context, 'DataView'), + Map = getNative(context, 'Map'), + Promise = getNative(context, 'Promise'), + Set = getNative(context, 'Set'), + WeakMap = getNative(context, 'WeakMap'), + nativeCreate = getNative(Object, 'create'); + + /** Used to store function metadata. */ + var metaMap = WeakMap && new WeakMap; + + /** Used to lookup unminified function names. */ + var realNames = {}; + + /** Used to detect maps, sets, and weakmaps. */ + var dataViewCtorString = toSource(DataView), + mapCtorString = toSource(Map), + promiseCtorString = toSource(Promise), + setCtorString = toSource(Set), + weakMapCtorString = toSource(WeakMap); + + /** Used to convert symbols to primitives and strings. */ + var symbolProto = Symbol ? Symbol.prototype : undefined, + symbolValueOf = symbolProto ? symbolProto.valueOf : undefined, + symbolToString = symbolProto ? symbolProto.toString : undefined; + + /*------------------------------------------------------------------------*/ + + /** + * Creates a `lodash` object which wraps `value` to enable implicit method + * chain sequences. Methods that operate on and return arrays, collections, + * and functions can be chained together. Methods that retrieve a single value + * or may return a primitive value will automatically end the chain sequence + * and return the unwrapped value. Otherwise, the value must be unwrapped + * with `_#value`. + * + * Explicit chain sequences, which must be unwrapped with `_#value`, may be + * enabled using `_.chain`. + * + * The execution of chained methods is lazy, that is, it's deferred until + * `_#value` is implicitly or explicitly called. + * + * Lazy evaluation allows several methods to support shortcut fusion. + * Shortcut fusion is an optimization to merge iteratee calls; this avoids + * the creation of intermediate arrays and can greatly reduce the number of + * iteratee executions. Sections of a chain sequence qualify for shortcut + * fusion if the section is applied to an array and iteratees accept only + * one argument. The heuristic for whether a section qualifies for shortcut + * fusion is subject to change. + * + * Chaining is supported in custom builds as long as the `_#value` method is + * directly or indirectly included in the build. + * + * In addition to lodash methods, wrappers have `Array` and `String` methods. + * + * The wrapper `Array` methods are: + * `concat`, `join`, `pop`, `push`, `shift`, `sort`, `splice`, and `unshift` + * + * The wrapper `String` methods are: + * `replace` and `split` + * + * The wrapper methods that support shortcut fusion are: + * `at`, `compact`, `drop`, `dropRight`, `dropWhile`, `filter`, `find`, + * `findLast`, `head`, `initial`, `last`, `map`, `reject`, `reverse`, `slice`, + * `tail`, `take`, `takeRight`, `takeRightWhile`, `takeWhile`, and `toArray` + * + * The chainable wrapper methods are: + * `after`, `ary`, `assign`, `assignIn`, `assignInWith`, `assignWith`, `at`, + * `before`, `bind`, `bindAll`, `bindKey`, `castArray`, `chain`, `chunk`, + * `commit`, `compact`, `concat`, `conforms`, `constant`, `countBy`, `create`, + * `curry`, `debounce`, `defaults`, `defaultsDeep`, `defer`, `delay`, + * `difference`, `differenceBy`, `differenceWith`, `drop`, `dropRight`, + * `dropRightWhile`, `dropWhile`, `extend`, `extendWith`, `fill`, `filter`, + * `flatMap`, `flatMapDeep`, `flatMapDepth`, `flatten`, `flattenDeep`, + * `flattenDepth`, `flip`, `flow`, `flowRight`, `fromPairs`, `functions`, + * `functionsIn`, `groupBy`, `initial`, `intersection`, `intersectionBy`, + * `intersectionWith`, `invert`, `invertBy`, `invokeMap`, `iteratee`, `keyBy`, + * `keys`, `keysIn`, `map`, `mapKeys`, `mapValues`, `matches`, `matchesProperty`, + * `memoize`, `merge`, `mergeWith`, `method`, `methodOf`, `mixin`, `negate`, + * `nthArg`, `omit`, `omitBy`, `once`, `orderBy`, `over`, `overArgs`, + * `overEvery`, `overSome`, `partial`, `partialRight`, `partition`, `pick`, + * `pickBy`, `plant`, `property`, `propertyOf`, `pull`, `pullAll`, `pullAllBy`, + * `pullAllWith`, `pullAt`, `push`, `range`, `rangeRight`, `rearg`, `reject`, + * `remove`, `rest`, `reverse`, `sampleSize`, `set`, `setWith`, `shuffle`, + * `slice`, `sort`, `sortBy`, `splice`, `spread`, `tail`, `take`, `takeRight`, + * `takeRightWhile`, `takeWhile`, `tap`, `throttle`, `thru`, `toArray`, + * `toPairs`, `toPairsIn`, `toPath`, `toPlainObject`, `transform`, `unary`, + * `union`, `unionBy`, `unionWith`, `uniq`, `uniqBy`, `uniqWith`, `unset`, + * `unshift`, `unzip`, `unzipWith`, `update`, `updateWith`, `values`, + * `valuesIn`, `without`, `wrap`, `xor`, `xorBy`, `xorWith`, `zip`, + * `zipObject`, `zipObjectDeep`, and `zipWith` + * + * The wrapper methods that are **not** chainable by default are: + * `add`, `attempt`, `camelCase`, `capitalize`, `ceil`, `clamp`, `clone`, + * `cloneDeep`, `cloneDeepWith`, `cloneWith`, `conformsTo`, `deburr`, + * `defaultTo`, `divide`, `each`, `eachRight`, `endsWith`, `eq`, `escape`, + * `escapeRegExp`, `every`, `find`, `findIndex`, `findKey`, `findLast`, + * `findLastIndex`, `findLastKey`, `first`, `floor`, `forEach`, `forEachRight`, + * `forIn`, `forInRight`, `forOwn`, `forOwnRight`, `get`, `gt`, `gte`, `has`, + * `hasIn`, `head`, `identity`, `includes`, `indexOf`, `inRange`, `invoke`, + * `isArguments`, `isArray`, `isArrayBuffer`, `isArrayLike`, `isArrayLikeObject`, + * `isBoolean`, `isBuffer`, `isDate`, `isElement`, `isEmpty`, `isEqual`, + * `isEqualWith`, `isError`, `isFinite`, `isFunction`, `isInteger`, `isLength`, + * `isMap`, `isMatch`, `isMatchWith`, `isNaN`, `isNative`, `isNil`, `isNull`, + * `isNumber`, `isObject`, `isObjectLike`, `isPlainObject`, `isRegExp`, + * `isSafeInteger`, `isSet`, `isString`, `isUndefined`, `isTypedArray`, + * `isWeakMap`, `isWeakSet`, `join`, `kebabCase`, `last`, `lastIndexOf`, + * `lowerCase`, `lowerFirst`, `lt`, `lte`, `max`, `maxBy`, `mean`, `meanBy`, + * `min`, `minBy`, `multiply`, `noConflict`, `noop`, `now`, `nth`, `pad`, + * `padEnd`, `padStart`, `parseInt`, `pop`, `random`, `reduce`, `reduceRight`, + * `repeat`, `result`, `round`, `runInContext`, `sample`, `shift`, `size`, + * `snakeCase`, `some`, `sortedIndex`, `sortedIndexBy`, `sortedLastIndex`, + * `sortedLastIndexBy`, `startCase`, `startsWith`, `stubArray`, `stubFalse`, + * `stubObject`, `stubString`, `stubTrue`, `subtract`, `sum`, `sumBy`, + * `template`, `times`, `toFinite`, `toInteger`, `toJSON`, `toLength`, + * `toLower`, `toNumber`, `toSafeInteger`, `toString`, `toUpper`, `trim`, + * `trimEnd`, `trimStart`, `truncate`, `unescape`, `uniqueId`, `upperCase`, + * `upperFirst`, `value`, and `words` + * + * @name _ + * @constructor + * @category Seq + * @param {*} value The value to wrap in a `lodash` instance. + * @returns {Object} Returns the new `lodash` wrapper instance. + * @example + * + * function square(n) { + * return n * n; + * } + * + * var wrapped = _([1, 2, 3]); + * + * // Returns an unwrapped value. + * wrapped.reduce(_.add); + * // => 6 + * + * // Returns a wrapped value. + * var squares = wrapped.map(square); + * + * _.isArray(squares); + * // => false + * + * _.isArray(squares.value()); + * // => true + */ + function lodash(value) { + if (isObjectLike(value) && !isArray(value) && !(value instanceof LazyWrapper)) { + if (value instanceof LodashWrapper) { + return value; + } + if (hasOwnProperty.call(value, '__wrapped__')) { + return wrapperClone(value); + } + } + return new LodashWrapper(value); + } + + /** + * The base implementation of `_.create` without support for assigning + * properties to the created object. + * + * @private + * @param {Object} proto The object to inherit from. + * @returns {Object} Returns the new object. + */ + var baseCreate = (function() { + function object() {} + return function(proto) { + if (!isObject(proto)) { + return {}; + } + if (objectCreate) { + return objectCreate(proto); + } + object.prototype = proto; + var result = new object; + object.prototype = undefined; + return result; + }; + }()); + + /** + * The function whose prototype chain sequence wrappers inherit from. + * + * @private + */ + function baseLodash() { + // No operation performed. + } + + /** + * The base constructor for creating `lodash` wrapper objects. + * + * @private + * @param {*} value The value to wrap. + * @param {boolean} [chainAll] Enable explicit method chain sequences. + */ + function LodashWrapper(value, chainAll) { + this.__wrapped__ = value; + this.__actions__ = []; + this.__chain__ = !!chainAll; + this.__index__ = 0; + this.__values__ = undefined; + } + + /** + * By default, the template delimiters used by lodash are like those in + * embedded Ruby (ERB) as well as ES2015 template strings. Change the + * following template settings to use alternative delimiters. + * + * @static + * @memberOf _ + * @type {Object} + */ + lodash.templateSettings = { + + /** + * Used to detect `data` property values to be HTML-escaped. + * + * @memberOf _.templateSettings + * @type {RegExp} + */ + 'escape': reEscape, + + /** + * Used to detect code to be evaluated. + * + * @memberOf _.templateSettings + * @type {RegExp} + */ + 'evaluate': reEvaluate, + + /** + * Used to detect `data` property values to inject. + * + * @memberOf _.templateSettings + * @type {RegExp} + */ + 'interpolate': reInterpolate, + + /** + * Used to reference the data object in the template text. + * + * @memberOf _.templateSettings + * @type {string} + */ + 'variable': '', + + /** + * Used to import variables into the compiled template. + * + * @memberOf _.templateSettings + * @type {Object} + */ + 'imports': { + + /** + * A reference to the `lodash` function. + * + * @memberOf _.templateSettings.imports + * @type {Function} + */ + '_': lodash + } + }; + + // Ensure wrappers are instances of `baseLodash`. + lodash.prototype = baseLodash.prototype; + lodash.prototype.constructor = lodash; + + LodashWrapper.prototype = baseCreate(baseLodash.prototype); + LodashWrapper.prototype.constructor = LodashWrapper; + + /*------------------------------------------------------------------------*/ + + /** + * Creates a lazy wrapper object which wraps `value` to enable lazy evaluation. + * + * @private + * @constructor + * @param {*} value The value to wrap. + */ + function LazyWrapper(value) { + this.__wrapped__ = value; + this.__actions__ = []; + this.__dir__ = 1; + this.__filtered__ = false; + this.__iteratees__ = []; + this.__takeCount__ = MAX_ARRAY_LENGTH; + this.__views__ = []; + } + + /** + * Creates a clone of the lazy wrapper object. + * + * @private + * @name clone + * @memberOf LazyWrapper + * @returns {Object} Returns the cloned `LazyWrapper` object. + */ + function lazyClone() { + var result = new LazyWrapper(this.__wrapped__); + result.__actions__ = copyArray(this.__actions__); + result.__dir__ = this.__dir__; + result.__filtered__ = this.__filtered__; + result.__iteratees__ = copyArray(this.__iteratees__); + result.__takeCount__ = this.__takeCount__; + result.__views__ = copyArray(this.__views__); + return result; + } + + /** + * Reverses the direction of lazy iteration. + * + * @private + * @name reverse + * @memberOf LazyWrapper + * @returns {Object} Returns the new reversed `LazyWrapper` object. + */ + function lazyReverse() { + if (this.__filtered__) { + var result = new LazyWrapper(this); + result.__dir__ = -1; + result.__filtered__ = true; + } else { + result = this.clone(); + result.__dir__ *= -1; + } + return result; + } + + /** + * Extracts the unwrapped value from its lazy wrapper. + * + * @private + * @name value + * @memberOf LazyWrapper + * @returns {*} Returns the unwrapped value. + */ + function lazyValue() { + var array = this.__wrapped__.value(), + dir = this.__dir__, + isArr = isArray(array), + isRight = dir < 0, + arrLength = isArr ? array.length : 0, + view = getView(0, arrLength, this.__views__), + start = view.start, + end = view.end, + length = end - start, + index = isRight ? end : (start - 1), + iteratees = this.__iteratees__, + iterLength = iteratees.length, + resIndex = 0, + takeCount = nativeMin(length, this.__takeCount__); + + if (!isArr || (!isRight && arrLength == length && takeCount == length)) { + return baseWrapperValue(array, this.__actions__); + } + var result = []; + + outer: + while (length-- && resIndex < takeCount) { + index += dir; + + var iterIndex = -1, + value = array[index]; + + while (++iterIndex < iterLength) { + var data = iteratees[iterIndex], + iteratee = data.iteratee, + type = data.type, + computed = iteratee(value); + + if (type == LAZY_MAP_FLAG) { + value = computed; + } else if (!computed) { + if (type == LAZY_FILTER_FLAG) { + continue outer; + } else { + break outer; + } + } + } + result[resIndex++] = value; + } + return result; + } + + // Ensure `LazyWrapper` is an instance of `baseLodash`. + LazyWrapper.prototype = baseCreate(baseLodash.prototype); + LazyWrapper.prototype.constructor = LazyWrapper; + + /*------------------------------------------------------------------------*/ + + /** + * Creates a hash object. + * + * @private + * @constructor + * @param {Array} [entries] The key-value pairs to cache. + */ + function Hash(entries) { + var index = -1, + length = entries == null ? 0 : entries.length; + + this.clear(); + while (++index < length) { + var entry = entries[index]; + this.set(entry[0], entry[1]); + } + } + + /** + * Removes all key-value entries from the hash. + * + * @private + * @name clear + * @memberOf Hash + */ + function hashClear() { + this.__data__ = nativeCreate ? nativeCreate(null) : {}; + this.size = 0; + } + + /** + * Removes `key` and its value from the hash. + * + * @private + * @name delete + * @memberOf Hash + * @param {Object} hash The hash to modify. + * @param {string} key The key of the value to remove. + * @returns {boolean} Returns `true` if the entry was removed, else `false`. + */ + function hashDelete(key) { + var result = this.has(key) && delete this.__data__[key]; + this.size -= result ? 1 : 0; + return result; + } + + /** + * Gets the hash value for `key`. + * + * @private + * @name get + * @memberOf Hash + * @param {string} key The key of the value to get. + * @returns {*} Returns the entry value. + */ + function hashGet(key) { + var data = this.__data__; + if (nativeCreate) { + var result = data[key]; + return result === HASH_UNDEFINED ? undefined : result; + } + return hasOwnProperty.call(data, key) ? data[key] : undefined; + } + + /** + * Checks if a hash value for `key` exists. + * + * @private + * @name has + * @memberOf Hash + * @param {string} key The key of the entry to check. + * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`. + */ + function hashHas(key) { + var data = this.__data__; + return nativeCreate ? (data[key] !== undefined) : hasOwnProperty.call(data, key); + } + + /** + * Sets the hash `key` to `value`. + * + * @private + * @name set + * @memberOf Hash + * @param {string} key The key of the value to set. + * @param {*} value The value to set. + * @returns {Object} Returns the hash instance. + */ + function hashSet(key, value) { + var data = this.__data__; + this.size += this.has(key) ? 0 : 1; + data[key] = (nativeCreate && value === undefined) ? HASH_UNDEFINED : value; + return this; + } + + // Add methods to `Hash`. + Hash.prototype.clear = hashClear; + Hash.prototype['delete'] = hashDelete; + Hash.prototype.get = hashGet; + Hash.prototype.has = hashHas; + Hash.prototype.set = hashSet; + + /*------------------------------------------------------------------------*/ + + /** + * Creates an list cache object. + * + * @private + * @constructor + * @param {Array} [entries] The key-value pairs to cache. + */ + function ListCache(entries) { + var index = -1, + length = entries == null ? 0 : entries.length; + + this.clear(); + while (++index < length) { + var entry = entries[index]; + this.set(entry[0], entry[1]); + } + } + + /** + * Removes all key-value entries from the list cache. + * + * @private + * @name clear + * @memberOf ListCache + */ + function listCacheClear() { + this.__data__ = []; + this.size = 0; + } + + /** + * Removes `key` and its value from the list cache. + * + * @private + * @name delete + * @memberOf ListCache + * @param {string} key The key of the value to remove. + * @returns {boolean} Returns `true` if the entry was removed, else `false`. + */ + function listCacheDelete(key) { + var data = this.__data__, + index = assocIndexOf(data, key); + + if (index < 0) { + return false; + } + var lastIndex = data.length - 1; + if (index == lastIndex) { + data.pop(); + } else { + splice.call(data, index, 1); + } + --this.size; + return true; + } + + /** + * Gets the list cache value for `key`. + * + * @private + * @name get + * @memberOf ListCache + * @param {string} key The key of the value to get. + * @returns {*} Returns the entry value. + */ + function listCacheGet(key) { + var data = this.__data__, + index = assocIndexOf(data, key); + + return index < 0 ? undefined : data[index][1]; + } + + /** + * Checks if a list cache value for `key` exists. + * + * @private + * @name has + * @memberOf ListCache + * @param {string} key The key of the entry to check. + * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`. + */ + function listCacheHas(key) { + return assocIndexOf(this.__data__, key) > -1; + } + + /** + * Sets the list cache `key` to `value`. + * + * @private + * @name set + * @memberOf ListCache + * @param {string} key The key of the value to set. + * @param {*} value The value to set. + * @returns {Object} Returns the list cache instance. + */ + function listCacheSet(key, value) { + var data = this.__data__, + index = assocIndexOf(data, key); + + if (index < 0) { + ++this.size; + data.push([key, value]); + } else { + data[index][1] = value; + } + return this; + } + + // Add methods to `ListCache`. + ListCache.prototype.clear = listCacheClear; + ListCache.prototype['delete'] = listCacheDelete; + ListCache.prototype.get = listCacheGet; + ListCache.prototype.has = listCacheHas; + ListCache.prototype.set = listCacheSet; + + /*------------------------------------------------------------------------*/ + + /** + * Creates a map cache object to store key-value pairs. + * + * @private + * @constructor + * @param {Array} [entries] The key-value pairs to cache. + */ + function MapCache(entries) { + var index = -1, + length = entries == null ? 0 : entries.length; + + this.clear(); + while (++index < length) { + var entry = entries[index]; + this.set(entry[0], entry[1]); + } + } + + /** + * Removes all key-value entries from the map. + * + * @private + * @name clear + * @memberOf MapCache + */ + function mapCacheClear() { + this.size = 0; + this.__data__ = { + 'hash': new Hash, + 'map': new (Map || ListCache), + 'string': new Hash + }; + } + + /** + * Removes `key` and its value from the map. + * + * @private + * @name delete + * @memberOf MapCache + * @param {string} key The key of the value to remove. + * @returns {boolean} Returns `true` if the entry was removed, else `false`. + */ + function mapCacheDelete(key) { + var result = getMapData(this, key)['delete'](key); + this.size -= result ? 1 : 0; + return result; + } + + /** + * Gets the map value for `key`. + * + * @private + * @name get + * @memberOf MapCache + * @param {string} key The key of the value to get. + * @returns {*} Returns the entry value. + */ + function mapCacheGet(key) { + return getMapData(this, key).get(key); + } + + /** + * Checks if a map value for `key` exists. + * + * @private + * @name has + * @memberOf MapCache + * @param {string} key The key of the entry to check. + * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`. + */ + function mapCacheHas(key) { + return getMapData(this, key).has(key); + } + + /** + * Sets the map `key` to `value`. + * + * @private + * @name set + * @memberOf MapCache + * @param {string} key The key of the value to set. + * @param {*} value The value to set. + * @returns {Object} Returns the map cache instance. + */ + function mapCacheSet(key, value) { + var data = getMapData(this, key), + size = data.size; + + data.set(key, value); + this.size += data.size == size ? 0 : 1; + return this; + } + + // Add methods to `MapCache`. + MapCache.prototype.clear = mapCacheClear; + MapCache.prototype['delete'] = mapCacheDelete; + MapCache.prototype.get = mapCacheGet; + MapCache.prototype.has = mapCacheHas; + MapCache.prototype.set = mapCacheSet; + + /*------------------------------------------------------------------------*/ + + /** + * + * Creates an array cache object to store unique values. + * + * @private + * @constructor + * @param {Array} [values] The values to cache. + */ + function SetCache(values) { + var index = -1, + length = values == null ? 0 : values.length; + + this.__data__ = new MapCache; + while (++index < length) { + this.add(values[index]); + } + } + + /** + * Adds `value` to the array cache. + * + * @private + * @name add + * @memberOf SetCache + * @alias push + * @param {*} value The value to cache. + * @returns {Object} Returns the cache instance. + */ + function setCacheAdd(value) { + this.__data__.set(value, HASH_UNDEFINED); + return this; + } + + /** + * Checks if `value` is in the array cache. + * + * @private + * @name has + * @memberOf SetCache + * @param {*} value The value to search for. + * @returns {number} Returns `true` if `value` is found, else `false`. + */ + function setCacheHas(value) { + return this.__data__.has(value); + } + + // Add methods to `SetCache`. + SetCache.prototype.add = SetCache.prototype.push = setCacheAdd; + SetCache.prototype.has = setCacheHas; + + /*------------------------------------------------------------------------*/ + + /** + * Creates a stack cache object to store key-value pairs. + * + * @private + * @constructor + * @param {Array} [entries] The key-value pairs to cache. + */ + function Stack(entries) { + var data = this.__data__ = new ListCache(entries); + this.size = data.size; + } + + /** + * Removes all key-value entries from the stack. + * + * @private + * @name clear + * @memberOf Stack + */ + function stackClear() { + this.__data__ = new ListCache; + this.size = 0; + } + + /** + * Removes `key` and its value from the stack. + * + * @private + * @name delete + * @memberOf Stack + * @param {string} key The key of the value to remove. + * @returns {boolean} Returns `true` if the entry was removed, else `false`. + */ + function stackDelete(key) { + var data = this.__data__, + result = data['delete'](key); + + this.size = data.size; + return result; + } + + /** + * Gets the stack value for `key`. + * + * @private + * @name get + * @memberOf Stack + * @param {string} key The key of the value to get. + * @returns {*} Returns the entry value. + */ + function stackGet(key) { + return this.__data__.get(key); + } + + /** + * Checks if a stack value for `key` exists. + * + * @private + * @name has + * @memberOf Stack + * @param {string} key The key of the entry to check. + * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`. + */ + function stackHas(key) { + return this.__data__.has(key); + } + + /** + * Sets the stack `key` to `value`. + * + * @private + * @name set + * @memberOf Stack + * @param {string} key The key of the value to set. + * @param {*} value The value to set. + * @returns {Object} Returns the stack cache instance. + */ + function stackSet(key, value) { + var data = this.__data__; + if (data instanceof ListCache) { + var pairs = data.__data__; + if (!Map || (pairs.length < LARGE_ARRAY_SIZE - 1)) { + pairs.push([key, value]); + this.size = ++data.size; + return this; + } + data = this.__data__ = new MapCache(pairs); + } + data.set(key, value); + this.size = data.size; + return this; + } + + // Add methods to `Stack`. + Stack.prototype.clear = stackClear; + Stack.prototype['delete'] = stackDelete; + Stack.prototype.get = stackGet; + Stack.prototype.has = stackHas; + Stack.prototype.set = stackSet; + + /*------------------------------------------------------------------------*/ + + /** + * Creates an array of the enumerable property names of the array-like `value`. + * + * @private + * @param {*} value The value to query. + * @param {boolean} inherited Specify returning inherited property names. + * @returns {Array} Returns the array of property names. + */ + function arrayLikeKeys(value, inherited) { + var isArr = isArray(value), + isArg = !isArr && isArguments(value), + isBuff = !isArr && !isArg && isBuffer(value), + isType = !isArr && !isArg && !isBuff && isTypedArray(value), + skipIndexes = isArr || isArg || isBuff || isType, + result = skipIndexes ? baseTimes(value.length, String) : [], + length = result.length; + + for (var key in value) { + if ((inherited || hasOwnProperty.call(value, key)) && + !(skipIndexes && ( + // Safari 9 has enumerable `arguments.length` in strict mode. + key == 'length' || + // Node.js 0.10 has enumerable non-index properties on buffers. + (isBuff && (key == 'offset' || key == 'parent')) || + // PhantomJS 2 has enumerable non-index properties on typed arrays. + (isType && (key == 'buffer' || key == 'byteLength' || key == 'byteOffset')) || + // Skip index properties. + isIndex(key, length) + ))) { + result.push(key); + } + } + return result; + } + + /** + * A specialized version of `_.sample` for arrays. + * + * @private + * @param {Array} array The array to sample. + * @returns {*} Returns the random element. + */ + function arraySample(array) { + var length = array.length; + return length ? array[baseRandom(0, length - 1)] : undefined; + } + + /** + * A specialized version of `_.sampleSize` for arrays. + * + * @private + * @param {Array} array The array to sample. + * @param {number} n The number of elements to sample. + * @returns {Array} Returns the random elements. + */ + function arraySampleSize(array, n) { + return shuffleSelf(copyArray(array), baseClamp(n, 0, array.length)); + } + + /** + * A specialized version of `_.shuffle` for arrays. + * + * @private + * @param {Array} array The array to shuffle. + * @returns {Array} Returns the new shuffled array. + */ + function arrayShuffle(array) { + return shuffleSelf(copyArray(array)); + } + + /** + * This function is like `assignValue` except that it doesn't assign + * `undefined` values. + * + * @private + * @param {Object} object The object to modify. + * @param {string} key The key of the property to assign. + * @param {*} value The value to assign. + */ + function assignMergeValue(object, key, value) { + if ((value !== undefined && !eq(object[key], value)) || + (value === undefined && !(key in object))) { + baseAssignValue(object, key, value); + } + } + + /** + * Assigns `value` to `key` of `object` if the existing value is not equivalent + * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero) + * for equality comparisons. + * + * @private + * @param {Object} object The object to modify. + * @param {string} key The key of the property to assign. + * @param {*} value The value to assign. + */ + function assignValue(object, key, value) { + var objValue = object[key]; + if (!(hasOwnProperty.call(object, key) && eq(objValue, value)) || + (value === undefined && !(key in object))) { + baseAssignValue(object, key, value); + } + } + + /** + * Gets the index at which the `key` is found in `array` of key-value pairs. + * + * @private + * @param {Array} array The array to inspect. + * @param {*} key The key to search for. + * @returns {number} Returns the index of the matched value, else `-1`. + */ + function assocIndexOf(array, key) { + var length = array.length; + while (length--) { + if (eq(array[length][0], key)) { + return length; + } + } + return -1; + } + + /** + * Aggregates elements of `collection` on `accumulator` with keys transformed + * by `iteratee` and values set by `setter`. + * + * @private + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} setter The function to set `accumulator` values. + * @param {Function} iteratee The iteratee to transform keys. + * @param {Object} accumulator The initial aggregated object. + * @returns {Function} Returns `accumulator`. + */ + function baseAggregator(collection, setter, iteratee, accumulator) { + baseEach(collection, function(value, key, collection) { + setter(accumulator, value, iteratee(value), collection); + }); + return accumulator; + } + + /** + * The base implementation of `_.assign` without support for multiple sources + * or `customizer` functions. + * + * @private + * @param {Object} object The destination object. + * @param {Object} source The source object. + * @returns {Object} Returns `object`. + */ + function baseAssign(object, source) { + return object && copyObject(source, keys(source), object); + } + + /** + * The base implementation of `_.assignIn` without support for multiple sources + * or `customizer` functions. + * + * @private + * @param {Object} object The destination object. + * @param {Object} source The source object. + * @returns {Object} Returns `object`. + */ + function baseAssignIn(object, source) { + return object && copyObject(source, keysIn(source), object); + } + + /** + * The base implementation of `assignValue` and `assignMergeValue` without + * value checks. + * + * @private + * @param {Object} object The object to modify. + * @param {string} key The key of the property to assign. + * @param {*} value The value to assign. + */ + function baseAssignValue(object, key, value) { + if (key == '__proto__' && defineProperty) { + defineProperty(object, key, { + 'configurable': true, + 'enumerable': true, + 'value': value, + 'writable': true + }); + } else { + object[key] = value; + } + } + + /** + * The base implementation of `_.at` without support for individual paths. + * + * @private + * @param {Object} object The object to iterate over. + * @param {string[]} paths The property paths to pick. + * @returns {Array} Returns the picked elements. + */ + function baseAt(object, paths) { + var index = -1, + length = paths.length, + result = Array(length), + skip = object == null; + + while (++index < length) { + result[index] = skip ? undefined : get(object, paths[index]); + } + return result; + } + + /** + * The base implementation of `_.clamp` which doesn't coerce arguments. + * + * @private + * @param {number} number The number to clamp. + * @param {number} [lower] The lower bound. + * @param {number} upper The upper bound. + * @returns {number} Returns the clamped number. + */ + function baseClamp(number, lower, upper) { + if (number === number) { + if (upper !== undefined) { + number = number <= upper ? number : upper; + } + if (lower !== undefined) { + number = number >= lower ? number : lower; + } + } + return number; + } + + /** + * The base implementation of `_.clone` and `_.cloneDeep` which tracks + * traversed objects. + * + * @private + * @param {*} value The value to clone. + * @param {boolean} bitmask The bitmask flags. + * 1 - Deep clone + * 2 - Flatten inherited properties + * 4 - Clone symbols + * @param {Function} [customizer] The function to customize cloning. + * @param {string} [key] The key of `value`. + * @param {Object} [object] The parent object of `value`. + * @param {Object} [stack] Tracks traversed objects and their clone counterparts. + * @returns {*} Returns the cloned value. + */ + function baseClone(value, bitmask, customizer, key, object, stack) { + var result, + isDeep = bitmask & CLONE_DEEP_FLAG, + isFlat = bitmask & CLONE_FLAT_FLAG, + isFull = bitmask & CLONE_SYMBOLS_FLAG; + + if (customizer) { + result = object ? customizer(value, key, object, stack) : customizer(value); + } + if (result !== undefined) { + return result; + } + if (!isObject(value)) { + return value; + } + var isArr = isArray(value); + if (isArr) { + result = initCloneArray(value); + if (!isDeep) { + return copyArray(value, result); + } + } else { + var tag = getTag(value), + isFunc = tag == funcTag || tag == genTag; + + if (isBuffer(value)) { + return cloneBuffer(value, isDeep); + } + if (tag == objectTag || tag == argsTag || (isFunc && !object)) { + result = (isFlat || isFunc) ? {} : initCloneObject(value); + if (!isDeep) { + return isFlat + ? copySymbolsIn(value, baseAssignIn(result, value)) + : copySymbols(value, baseAssign(result, value)); + } + } else { + if (!cloneableTags[tag]) { + return object ? value : {}; + } + result = initCloneByTag(value, tag, isDeep); + } + } + // Check for circular references and return its corresponding clone. + stack || (stack = new Stack); + var stacked = stack.get(value); + if (stacked) { + return stacked; + } + stack.set(value, result); + + if (isSet(value)) { + value.forEach(function(subValue) { + result.add(baseClone(subValue, bitmask, customizer, subValue, value, stack)); + }); + } else if (isMap(value)) { + value.forEach(function(subValue, key) { + result.set(key, baseClone(subValue, bitmask, customizer, key, value, stack)); + }); + } + + var keysFunc = isFull + ? (isFlat ? getAllKeysIn : getAllKeys) + : (isFlat ? keysIn : keys); + + var props = isArr ? undefined : keysFunc(value); + arrayEach(props || value, function(subValue, key) { + if (props) { + key = subValue; + subValue = value[key]; + } + // Recursively populate clone (susceptible to call stack limits). + assignValue(result, key, baseClone(subValue, bitmask, customizer, key, value, stack)); + }); + return result; + } + + /** + * The base implementation of `_.conforms` which doesn't clone `source`. + * + * @private + * @param {Object} source The object of property predicates to conform to. + * @returns {Function} Returns the new spec function. + */ + function baseConforms(source) { + var props = keys(source); + return function(object) { + return baseConformsTo(object, source, props); + }; + } + + /** + * The base implementation of `_.conformsTo` which accepts `props` to check. + * + * @private + * @param {Object} object The object to inspect. + * @param {Object} source The object of property predicates to conform to. + * @returns {boolean} Returns `true` if `object` conforms, else `false`. + */ + function baseConformsTo(object, source, props) { + var length = props.length; + if (object == null) { + return !length; + } + object = Object(object); + while (length--) { + var key = props[length], + predicate = source[key], + value = object[key]; + + if ((value === undefined && !(key in object)) || !predicate(value)) { + return false; + } + } + return true; + } + + /** + * The base implementation of `_.delay` and `_.defer` which accepts `args` + * to provide to `func`. + * + * @private + * @param {Function} func The function to delay. + * @param {number} wait The number of milliseconds to delay invocation. + * @param {Array} args The arguments to provide to `func`. + * @returns {number|Object} Returns the timer id or timeout object. + */ + function baseDelay(func, wait, args) { + if (typeof func != 'function') { + throw new TypeError(FUNC_ERROR_TEXT); + } + return setTimeout(function() { func.apply(undefined, args); }, wait); + } + + /** + * The base implementation of methods like `_.difference` without support + * for excluding multiple arrays or iteratee shorthands. + * + * @private + * @param {Array} array The array to inspect. + * @param {Array} values The values to exclude. + * @param {Function} [iteratee] The iteratee invoked per element. + * @param {Function} [comparator] The comparator invoked per element. + * @returns {Array} Returns the new array of filtered values. + */ + function baseDifference(array, values, iteratee, comparator) { + var index = -1, + includes = arrayIncludes, + isCommon = true, + length = array.length, + result = [], + valuesLength = values.length; + + if (!length) { + return result; + } + if (iteratee) { + values = arrayMap(values, baseUnary(iteratee)); + } + if (comparator) { + includes = arrayIncludesWith; + isCommon = false; + } + else if (values.length >= LARGE_ARRAY_SIZE) { + includes = cacheHas; + isCommon = false; + values = new SetCache(values); + } + outer: + while (++index < length) { + var value = array[index], + computed = iteratee == null ? value : iteratee(value); + + value = (comparator || value !== 0) ? value : 0; + if (isCommon && computed === computed) { + var valuesIndex = valuesLength; + while (valuesIndex--) { + if (values[valuesIndex] === computed) { + continue outer; + } + } + result.push(value); + } + else if (!includes(values, computed, comparator)) { + result.push(value); + } + } + return result; + } + + /** + * The base implementation of `_.forEach` without support for iteratee shorthands. + * + * @private + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @returns {Array|Object} Returns `collection`. + */ + var baseEach = createBaseEach(baseForOwn); + + /** + * The base implementation of `_.forEachRight` without support for iteratee shorthands. + * + * @private + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @returns {Array|Object} Returns `collection`. + */ + var baseEachRight = createBaseEach(baseForOwnRight, true); + + /** + * The base implementation of `_.every` without support for iteratee shorthands. + * + * @private + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} predicate The function invoked per iteration. + * @returns {boolean} Returns `true` if all elements pass the predicate check, + * else `false` + */ + function baseEvery(collection, predicate) { + var result = true; + baseEach(collection, function(value, index, collection) { + result = !!predicate(value, index, collection); + return result; + }); + return result; + } + + /** + * The base implementation of methods like `_.max` and `_.min` which accepts a + * `comparator` to determine the extremum value. + * + * @private + * @param {Array} array The array to iterate over. + * @param {Function} iteratee The iteratee invoked per iteration. + * @param {Function} comparator The comparator used to compare values. + * @returns {*} Returns the extremum value. + */ + function baseExtremum(array, iteratee, comparator) { + var index = -1, + length = array.length; + + while (++index < length) { + var value = array[index], + current = iteratee(value); + + if (current != null && (computed === undefined + ? (current === current && !isSymbol(current)) + : comparator(current, computed) + )) { + var computed = current, + result = value; + } + } + return result; + } + + /** + * The base implementation of `_.fill` without an iteratee call guard. + * + * @private + * @param {Array} array The array to fill. + * @param {*} value The value to fill `array` with. + * @param {number} [start=0] The start position. + * @param {number} [end=array.length] The end position. + * @returns {Array} Returns `array`. + */ + function baseFill(array, value, start, end) { + var length = array.length; + + start = toInteger(start); + if (start < 0) { + start = -start > length ? 0 : (length + start); + } + end = (end === undefined || end > length) ? length : toInteger(end); + if (end < 0) { + end += length; + } + end = start > end ? 0 : toLength(end); + while (start < end) { + array[start++] = value; + } + return array; + } + + /** + * The base implementation of `_.filter` without support for iteratee shorthands. + * + * @private + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} predicate The function invoked per iteration. + * @returns {Array} Returns the new filtered array. + */ + function baseFilter(collection, predicate) { + var result = []; + baseEach(collection, function(value, index, collection) { + if (predicate(value, index, collection)) { + result.push(value); + } + }); + return result; + } + + /** + * The base implementation of `_.flatten` with support for restricting flattening. + * + * @private + * @param {Array} array The array to flatten. + * @param {number} depth The maximum recursion depth. + * @param {boolean} [predicate=isFlattenable] The function invoked per iteration. + * @param {boolean} [isStrict] Restrict to values that pass `predicate` checks. + * @param {Array} [result=[]] The initial result value. + * @returns {Array} Returns the new flattened array. + */ + function baseFlatten(array, depth, predicate, isStrict, result) { + var index = -1, + length = array.length; + + predicate || (predicate = isFlattenable); + result || (result = []); + + while (++index < length) { + var value = array[index]; + if (depth > 0 && predicate(value)) { + if (depth > 1) { + // Recursively flatten arrays (susceptible to call stack limits). + baseFlatten(value, depth - 1, predicate, isStrict, result); + } else { + arrayPush(result, value); + } + } else if (!isStrict) { + result[result.length] = value; + } + } + return result; + } + + /** + * The base implementation of `baseForOwn` which iterates over `object` + * properties returned by `keysFunc` and invokes `iteratee` for each property. + * Iteratee functions may exit iteration early by explicitly returning `false`. + * + * @private + * @param {Object} object The object to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @param {Function} keysFunc The function to get the keys of `object`. + * @returns {Object} Returns `object`. + */ + var baseFor = createBaseFor(); + + /** + * This function is like `baseFor` except that it iterates over properties + * in the opposite order. + * + * @private + * @param {Object} object The object to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @param {Function} keysFunc The function to get the keys of `object`. + * @returns {Object} Returns `object`. + */ + var baseForRight = createBaseFor(true); + + /** + * The base implementation of `_.forOwn` without support for iteratee shorthands. + * + * @private + * @param {Object} object The object to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @returns {Object} Returns `object`. + */ + function baseForOwn(object, iteratee) { + return object && baseFor(object, iteratee, keys); + } + + /** + * The base implementation of `_.forOwnRight` without support for iteratee shorthands. + * + * @private + * @param {Object} object The object to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @returns {Object} Returns `object`. + */ + function baseForOwnRight(object, iteratee) { + return object && baseForRight(object, iteratee, keys); + } + + /** + * The base implementation of `_.functions` which creates an array of + * `object` function property names filtered from `props`. + * + * @private + * @param {Object} object The object to inspect. + * @param {Array} props The property names to filter. + * @returns {Array} Returns the function names. + */ + function baseFunctions(object, props) { + return arrayFilter(props, function(key) { + return isFunction(object[key]); + }); + } + + /** + * The base implementation of `_.get` without support for default values. + * + * @private + * @param {Object} object The object to query. + * @param {Array|string} path The path of the property to get. + * @returns {*} Returns the resolved value. + */ + function baseGet(object, path) { + path = castPath(path, object); + + var index = 0, + length = path.length; + + while (object != null && index < length) { + object = object[toKey(path[index++])]; + } + return (index && index == length) ? object : undefined; + } + + /** + * The base implementation of `getAllKeys` and `getAllKeysIn` which uses + * `keysFunc` and `symbolsFunc` to get the enumerable property names and + * symbols of `object`. + * + * @private + * @param {Object} object The object to query. + * @param {Function} keysFunc The function to get the keys of `object`. + * @param {Function} symbolsFunc The function to get the symbols of `object`. + * @returns {Array} Returns the array of property names and symbols. + */ + function baseGetAllKeys(object, keysFunc, symbolsFunc) { + var result = keysFunc(object); + return isArray(object) ? result : arrayPush(result, symbolsFunc(object)); + } + + /** + * The base implementation of `getTag` without fallbacks for buggy environments. + * + * @private + * @param {*} value The value to query. + * @returns {string} Returns the `toStringTag`. + */ + function baseGetTag(value) { + if (value == null) { + return value === undefined ? undefinedTag : nullTag; + } + return (symToStringTag && symToStringTag in Object(value)) + ? getRawTag(value) + : objectToString(value); + } + + /** + * The base implementation of `_.gt` which doesn't coerce arguments. + * + * @private + * @param {*} value The value to compare. + * @param {*} other The other value to compare. + * @returns {boolean} Returns `true` if `value` is greater than `other`, + * else `false`. + */ + function baseGt(value, other) { + return value > other; + } + + /** + * The base implementation of `_.has` without support for deep paths. + * + * @private + * @param {Object} [object] The object to query. + * @param {Array|string} key The key to check. + * @returns {boolean} Returns `true` if `key` exists, else `false`. + */ + function baseHas(object, key) { + return object != null && hasOwnProperty.call(object, key); + } + + /** + * The base implementation of `_.hasIn` without support for deep paths. + * + * @private + * @param {Object} [object] The object to query. + * @param {Array|string} key The key to check. + * @returns {boolean} Returns `true` if `key` exists, else `false`. + */ + function baseHasIn(object, key) { + return object != null && key in Object(object); + } + + /** + * The base implementation of `_.inRange` which doesn't coerce arguments. + * + * @private + * @param {number} number The number to check. + * @param {number} start The start of the range. + * @param {number} end The end of the range. + * @returns {boolean} Returns `true` if `number` is in the range, else `false`. + */ + function baseInRange(number, start, end) { + return number >= nativeMin(start, end) && number < nativeMax(start, end); + } + + /** + * The base implementation of methods like `_.intersection`, without support + * for iteratee shorthands, that accepts an array of arrays to inspect. + * + * @private + * @param {Array} arrays The arrays to inspect. + * @param {Function} [iteratee] The iteratee invoked per element. + * @param {Function} [comparator] The comparator invoked per element. + * @returns {Array} Returns the new array of shared values. + */ + function baseIntersection(arrays, iteratee, comparator) { + var includes = comparator ? arrayIncludesWith : arrayIncludes, + length = arrays[0].length, + othLength = arrays.length, + othIndex = othLength, + caches = Array(othLength), + maxLength = Infinity, + result = []; + + while (othIndex--) { + var array = arrays[othIndex]; + if (othIndex && iteratee) { + array = arrayMap(array, baseUnary(iteratee)); + } + maxLength = nativeMin(array.length, maxLength); + caches[othIndex] = !comparator && (iteratee || (length >= 120 && array.length >= 120)) + ? new SetCache(othIndex && array) + : undefined; + } + array = arrays[0]; + + var index = -1, + seen = caches[0]; + + outer: + while (++index < length && result.length < maxLength) { + var value = array[index], + computed = iteratee ? iteratee(value) : value; + + value = (comparator || value !== 0) ? value : 0; + if (!(seen + ? cacheHas(seen, computed) + : includes(result, computed, comparator) + )) { + othIndex = othLength; + while (--othIndex) { + var cache = caches[othIndex]; + if (!(cache + ? cacheHas(cache, computed) + : includes(arrays[othIndex], computed, comparator)) + ) { + continue outer; + } + } + if (seen) { + seen.push(computed); + } + result.push(value); + } + } + return result; + } + + /** + * The base implementation of `_.invert` and `_.invertBy` which inverts + * `object` with values transformed by `iteratee` and set by `setter`. + * + * @private + * @param {Object} object The object to iterate over. + * @param {Function} setter The function to set `accumulator` values. + * @param {Function} iteratee The iteratee to transform values. + * @param {Object} accumulator The initial inverted object. + * @returns {Function} Returns `accumulator`. + */ + function baseInverter(object, setter, iteratee, accumulator) { + baseForOwn(object, function(value, key, object) { + setter(accumulator, iteratee(value), key, object); + }); + return accumulator; + } + + /** + * The base implementation of `_.invoke` without support for individual + * method arguments. + * + * @private + * @param {Object} object The object to query. + * @param {Array|string} path The path of the method to invoke. + * @param {Array} args The arguments to invoke the method with. + * @returns {*} Returns the result of the invoked method. + */ + function baseInvoke(object, path, args) { + path = castPath(path, object); + object = parent(object, path); + var func = object == null ? object : object[toKey(last(path))]; + return func == null ? undefined : apply(func, object, args); + } + + /** + * The base implementation of `_.isArguments`. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is an `arguments` object, + */ + function baseIsArguments(value) { + return isObjectLike(value) && baseGetTag(value) == argsTag; + } + + /** + * The base implementation of `_.isArrayBuffer` without Node.js optimizations. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`. + */ + function baseIsArrayBuffer(value) { + return isObjectLike(value) && baseGetTag(value) == arrayBufferTag; + } + + /** + * The base implementation of `_.isDate` without Node.js optimizations. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a date object, else `false`. + */ + function baseIsDate(value) { + return isObjectLike(value) && baseGetTag(value) == dateTag; + } + + /** + * The base implementation of `_.isEqual` which supports partial comparisons + * and tracks traversed objects. + * + * @private + * @param {*} value The value to compare. + * @param {*} other The other value to compare. + * @param {boolean} bitmask The bitmask flags. + * 1 - Unordered comparison + * 2 - Partial comparison + * @param {Function} [customizer] The function to customize comparisons. + * @param {Object} [stack] Tracks traversed `value` and `other` objects. + * @returns {boolean} Returns `true` if the values are equivalent, else `false`. + */ + function baseIsEqual(value, other, bitmask, customizer, stack) { + if (value === other) { + return true; + } + if (value == null || other == null || (!isObjectLike(value) && !isObjectLike(other))) { + return value !== value && other !== other; + } + return baseIsEqualDeep(value, other, bitmask, customizer, baseIsEqual, stack); + } + + /** + * A specialized version of `baseIsEqual` for arrays and objects which performs + * deep comparisons and tracks traversed objects enabling objects with circular + * references to be compared. + * + * @private + * @param {Object} object The object to compare. + * @param {Object} other The other object to compare. + * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details. + * @param {Function} customizer The function to customize comparisons. + * @param {Function} equalFunc The function to determine equivalents of values. + * @param {Object} [stack] Tracks traversed `object` and `other` objects. + * @returns {boolean} Returns `true` if the objects are equivalent, else `false`. + */ + function baseIsEqualDeep(object, other, bitmask, customizer, equalFunc, stack) { + var objIsArr = isArray(object), + othIsArr = isArray(other), + objTag = objIsArr ? arrayTag : getTag(object), + othTag = othIsArr ? arrayTag : getTag(other); + + objTag = objTag == argsTag ? objectTag : objTag; + othTag = othTag == argsTag ? objectTag : othTag; + + var objIsObj = objTag == objectTag, + othIsObj = othTag == objectTag, + isSameTag = objTag == othTag; + + if (isSameTag && isBuffer(object)) { + if (!isBuffer(other)) { + return false; + } + objIsArr = true; + objIsObj = false; + } + if (isSameTag && !objIsObj) { + stack || (stack = new Stack); + return (objIsArr || isTypedArray(object)) + ? equalArrays(object, other, bitmask, customizer, equalFunc, stack) + : equalByTag(object, other, objTag, bitmask, customizer, equalFunc, stack); + } + if (!(bitmask & COMPARE_PARTIAL_FLAG)) { + var objIsWrapped = objIsObj && hasOwnProperty.call(object, '__wrapped__'), + othIsWrapped = othIsObj && hasOwnProperty.call(other, '__wrapped__'); + + if (objIsWrapped || othIsWrapped) { + var objUnwrapped = objIsWrapped ? object.value() : object, + othUnwrapped = othIsWrapped ? other.value() : other; + + stack || (stack = new Stack); + return equalFunc(objUnwrapped, othUnwrapped, bitmask, customizer, stack); + } + } + if (!isSameTag) { + return false; + } + stack || (stack = new Stack); + return equalObjects(object, other, bitmask, customizer, equalFunc, stack); + } + + /** + * The base implementation of `_.isMap` without Node.js optimizations. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a map, else `false`. + */ + function baseIsMap(value) { + return isObjectLike(value) && getTag(value) == mapTag; + } + + /** + * The base implementation of `_.isMatch` without support for iteratee shorthands. + * + * @private + * @param {Object} object The object to inspect. + * @param {Object} source The object of property values to match. + * @param {Array} matchData The property names, values, and compare flags to match. + * @param {Function} [customizer] The function to customize comparisons. + * @returns {boolean} Returns `true` if `object` is a match, else `false`. + */ + function baseIsMatch(object, source, matchData, customizer) { + var index = matchData.length, + length = index, + noCustomizer = !customizer; + + if (object == null) { + return !length; + } + object = Object(object); + while (index--) { + var data = matchData[index]; + if ((noCustomizer && data[2]) + ? data[1] !== object[data[0]] + : !(data[0] in object) + ) { + return false; + } + } + while (++index < length) { + data = matchData[index]; + var key = data[0], + objValue = object[key], + srcValue = data[1]; + + if (noCustomizer && data[2]) { + if (objValue === undefined && !(key in object)) { + return false; + } + } else { + var stack = new Stack; + if (customizer) { + var result = customizer(objValue, srcValue, key, object, source, stack); + } + if (!(result === undefined + ? baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG, customizer, stack) + : result + )) { + return false; + } + } + } + return true; + } + + /** + * The base implementation of `_.isNative` without bad shim checks. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a native function, + * else `false`. + */ + function baseIsNative(value) { + if (!isObject(value) || isMasked(value)) { + return false; + } + var pattern = isFunction(value) ? reIsNative : reIsHostCtor; + return pattern.test(toSource(value)); + } + + /** + * The base implementation of `_.isRegExp` without Node.js optimizations. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a regexp, else `false`. + */ + function baseIsRegExp(value) { + return isObjectLike(value) && baseGetTag(value) == regexpTag; + } + + /** + * The base implementation of `_.isSet` without Node.js optimizations. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a set, else `false`. + */ + function baseIsSet(value) { + return isObjectLike(value) && getTag(value) == setTag; + } + + /** + * The base implementation of `_.isTypedArray` without Node.js optimizations. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a typed array, else `false`. + */ + function baseIsTypedArray(value) { + return isObjectLike(value) && + isLength(value.length) && !!typedArrayTags[baseGetTag(value)]; + } + + /** + * The base implementation of `_.iteratee`. + * + * @private + * @param {*} [value=_.identity] The value to convert to an iteratee. + * @returns {Function} Returns the iteratee. + */ + function baseIteratee(value) { + // Don't store the `typeof` result in a variable to avoid a JIT bug in Safari 9. + // See https://bugs.webkit.org/show_bug.cgi?id=156034 for more details. + if (typeof value == 'function') { + return value; + } + if (value == null) { + return identity; + } + if (typeof value == 'object') { + return isArray(value) + ? baseMatchesProperty(value[0], value[1]) + : baseMatches(value); + } + return property(value); + } + + /** + * The base implementation of `_.keys` which doesn't treat sparse arrays as dense. + * + * @private + * @param {Object} object The object to query. + * @returns {Array} Returns the array of property names. + */ + function baseKeys(object) { + if (!isPrototype(object)) { + return nativeKeys(object); + } + var result = []; + for (var key in Object(object)) { + if (hasOwnProperty.call(object, key) && key != 'constructor') { + result.push(key); + } + } + return result; + } + + /** + * The base implementation of `_.keysIn` which doesn't treat sparse arrays as dense. + * + * @private + * @param {Object} object The object to query. + * @returns {Array} Returns the array of property names. + */ + function baseKeysIn(object) { + if (!isObject(object)) { + return nativeKeysIn(object); + } + var isProto = isPrototype(object), + result = []; + + for (var key in object) { + if (!(key == 'constructor' && (isProto || !hasOwnProperty.call(object, key)))) { + result.push(key); + } + } + return result; + } + + /** + * The base implementation of `_.lt` which doesn't coerce arguments. + * + * @private + * @param {*} value The value to compare. + * @param {*} other The other value to compare. + * @returns {boolean} Returns `true` if `value` is less than `other`, + * else `false`. + */ + function baseLt(value, other) { + return value < other; + } + + /** + * The base implementation of `_.map` without support for iteratee shorthands. + * + * @private + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} iteratee The function invoked per iteration. + * @returns {Array} Returns the new mapped array. + */ + function baseMap(collection, iteratee) { + var index = -1, + result = isArrayLike(collection) ? Array(collection.length) : []; + + baseEach(collection, function(value, key, collection) { + result[++index] = iteratee(value, key, collection); + }); + return result; + } + + /** + * The base implementation of `_.matches` which doesn't clone `source`. + * + * @private + * @param {Object} source The object of property values to match. + * @returns {Function} Returns the new spec function. + */ + function baseMatches(source) { + var matchData = getMatchData(source); + if (matchData.length == 1 && matchData[0][2]) { + return matchesStrictComparable(matchData[0][0], matchData[0][1]); + } + return function(object) { + return object === source || baseIsMatch(object, source, matchData); + }; + } + + /** + * The base implementation of `_.matchesProperty` which doesn't clone `srcValue`. + * + * @private + * @param {string} path The path of the property to get. + * @param {*} srcValue The value to match. + * @returns {Function} Returns the new spec function. + */ + function baseMatchesProperty(path, srcValue) { + if (isKey(path) && isStrictComparable(srcValue)) { + return matchesStrictComparable(toKey(path), srcValue); + } + return function(object) { + var objValue = get(object, path); + return (objValue === undefined && objValue === srcValue) + ? hasIn(object, path) + : baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG); + }; + } + + /** + * The base implementation of `_.merge` without support for multiple sources. + * + * @private + * @param {Object} object The destination object. + * @param {Object} source The source object. + * @param {number} srcIndex The index of `source`. + * @param {Function} [customizer] The function to customize merged values. + * @param {Object} [stack] Tracks traversed source values and their merged + * counterparts. + */ + function baseMerge(object, source, srcIndex, customizer, stack) { + if (object === source) { + return; + } + baseFor(source, function(srcValue, key) { + stack || (stack = new Stack); + if (isObject(srcValue)) { + baseMergeDeep(object, source, key, srcIndex, baseMerge, customizer, stack); + } + else { + var newValue = customizer + ? customizer(safeGet(object, key), srcValue, (key + ''), object, source, stack) + : undefined; + + if (newValue === undefined) { + newValue = srcValue; + } + assignMergeValue(object, key, newValue); + } + }, keysIn); + } + + /** + * A specialized version of `baseMerge` for arrays and objects which performs + * deep merges and tracks traversed objects enabling objects with circular + * references to be merged. + * + * @private + * @param {Object} object The destination object. + * @param {Object} source The source object. + * @param {string} key The key of the value to merge. + * @param {number} srcIndex The index of `source`. + * @param {Function} mergeFunc The function to merge values. + * @param {Function} [customizer] The function to customize assigned values. + * @param {Object} [stack] Tracks traversed source values and their merged + * counterparts. + */ + function baseMergeDeep(object, source, key, srcIndex, mergeFunc, customizer, stack) { + var objValue = safeGet(object, key), + srcValue = safeGet(source, key), + stacked = stack.get(srcValue); + + if (stacked) { + assignMergeValue(object, key, stacked); + return; + } + var newValue = customizer + ? customizer(objValue, srcValue, (key + ''), object, source, stack) + : undefined; + + var isCommon = newValue === undefined; + + if (isCommon) { + var isArr = isArray(srcValue), + isBuff = !isArr && isBuffer(srcValue), + isTyped = !isArr && !isBuff && isTypedArray(srcValue); + + newValue = srcValue; + if (isArr || isBuff || isTyped) { + if (isArray(objValue)) { + newValue = objValue; + } + else if (isArrayLikeObject(objValue)) { + newValue = copyArray(objValue); + } + else if (isBuff) { + isCommon = false; + newValue = cloneBuffer(srcValue, true); + } + else if (isTyped) { + isCommon = false; + newValue = cloneTypedArray(srcValue, true); + } + else { + newValue = []; + } + } + else if (isPlainObject(srcValue) || isArguments(srcValue)) { + newValue = objValue; + if (isArguments(objValue)) { + newValue = toPlainObject(objValue); + } + else if (!isObject(objValue) || isFunction(objValue)) { + newValue = initCloneObject(srcValue); + } + } + else { + isCommon = false; + } + } + if (isCommon) { + // Recursively merge objects and arrays (susceptible to call stack limits). + stack.set(srcValue, newValue); + mergeFunc(newValue, srcValue, srcIndex, customizer, stack); + stack['delete'](srcValue); + } + assignMergeValue(object, key, newValue); + } + + /** + * The base implementation of `_.nth` which doesn't coerce arguments. + * + * @private + * @param {Array} array The array to query. + * @param {number} n The index of the element to return. + * @returns {*} Returns the nth element of `array`. + */ + function baseNth(array, n) { + var length = array.length; + if (!length) { + return; + } + n += n < 0 ? length : 0; + return isIndex(n, length) ? array[n] : undefined; + } + + /** + * The base implementation of `_.orderBy` without param guards. + * + * @private + * @param {Array|Object} collection The collection to iterate over. + * @param {Function[]|Object[]|string[]} iteratees The iteratees to sort by. + * @param {string[]} orders The sort orders of `iteratees`. + * @returns {Array} Returns the new sorted array. + */ + function baseOrderBy(collection, iteratees, orders) { + var index = -1; + iteratees = arrayMap(iteratees.length ? iteratees : [identity], baseUnary(getIteratee())); + + var result = baseMap(collection, function(value, key, collection) { + var criteria = arrayMap(iteratees, function(iteratee) { + return iteratee(value); + }); + return { 'criteria': criteria, 'index': ++index, 'value': value }; + }); + + return baseSortBy(result, function(object, other) { + return compareMultiple(object, other, orders); + }); + } + + /** + * The base implementation of `_.pick` without support for individual + * property identifiers. + * + * @private + * @param {Object} object The source object. + * @param {string[]} paths The property paths to pick. + * @returns {Object} Returns the new object. + */ + function basePick(object, paths) { + return basePickBy(object, paths, function(value, path) { + return hasIn(object, path); + }); + } + + /** + * The base implementation of `_.pickBy` without support for iteratee shorthands. + * + * @private + * @param {Object} object The source object. + * @param {string[]} paths The property paths to pick. + * @param {Function} predicate The function invoked per property. + * @returns {Object} Returns the new object. + */ + function basePickBy(object, paths, predicate) { + var index = -1, + length = paths.length, + result = {}; + + while (++index < length) { + var path = paths[index], + value = baseGet(object, path); + + if (predicate(value, path)) { + baseSet(result, castPath(path, object), value); + } + } + return result; + } + + /** + * A specialized version of `baseProperty` which supports deep paths. + * + * @private + * @param {Array|string} path The path of the property to get. + * @returns {Function} Returns the new accessor function. + */ + function basePropertyDeep(path) { + return function(object) { + return baseGet(object, path); + }; + } + + /** + * The base implementation of `_.pullAllBy` without support for iteratee + * shorthands. + * + * @private + * @param {Array} array The array to modify. + * @param {Array} values The values to remove. + * @param {Function} [iteratee] The iteratee invoked per element. + * @param {Function} [comparator] The comparator invoked per element. + * @returns {Array} Returns `array`. + */ + function basePullAll(array, values, iteratee, comparator) { + var indexOf = comparator ? baseIndexOfWith : baseIndexOf, + index = -1, + length = values.length, + seen = array; + + if (array === values) { + values = copyArray(values); + } + if (iteratee) { + seen = arrayMap(array, baseUnary(iteratee)); + } + while (++index < length) { + var fromIndex = 0, + value = values[index], + computed = iteratee ? iteratee(value) : value; + + while ((fromIndex = indexOf(seen, computed, fromIndex, comparator)) > -1) { + if (seen !== array) { + splice.call(seen, fromIndex, 1); + } + splice.call(array, fromIndex, 1); + } + } + return array; + } + + /** + * The base implementation of `_.pullAt` without support for individual + * indexes or capturing the removed elements. + * + * @private + * @param {Array} array The array to modify. + * @param {number[]} indexes The indexes of elements to remove. + * @returns {Array} Returns `array`. + */ + function basePullAt(array, indexes) { + var length = array ? indexes.length : 0, + lastIndex = length - 1; + + while (length--) { + var index = indexes[length]; + if (length == lastIndex || index !== previous) { + var previous = index; + if (isIndex(index)) { + splice.call(array, index, 1); + } else { + baseUnset(array, index); + } + } + } + return array; + } + + /** + * The base implementation of `_.random` without support for returning + * floating-point numbers. + * + * @private + * @param {number} lower The lower bound. + * @param {number} upper The upper bound. + * @returns {number} Returns the random number. + */ + function baseRandom(lower, upper) { + return lower + nativeFloor(nativeRandom() * (upper - lower + 1)); + } + + /** + * The base implementation of `_.range` and `_.rangeRight` which doesn't + * coerce arguments. + * + * @private + * @param {number} start The start of the range. + * @param {number} end The end of the range. + * @param {number} step The value to increment or decrement by. + * @param {boolean} [fromRight] Specify iterating from right to left. + * @returns {Array} Returns the range of numbers. + */ + function baseRange(start, end, step, fromRight) { + var index = -1, + length = nativeMax(nativeCeil((end - start) / (step || 1)), 0), + result = Array(length); + + while (length--) { + result[fromRight ? length : ++index] = start; + start += step; + } + return result; + } + + /** + * The base implementation of `_.repeat` which doesn't coerce arguments. + * + * @private + * @param {string} string The string to repeat. + * @param {number} n The number of times to repeat the string. + * @returns {string} Returns the repeated string. + */ + function baseRepeat(string, n) { + var result = ''; + if (!string || n < 1 || n > MAX_SAFE_INTEGER) { + return result; + } + // Leverage the exponentiation by squaring algorithm for a faster repeat. + // See https://en.wikipedia.org/wiki/Exponentiation_by_squaring for more details. + do { + if (n % 2) { + result += string; + } + n = nativeFloor(n / 2); + if (n) { + string += string; + } + } while (n); + + return result; + } + + /** + * The base implementation of `_.rest` which doesn't validate or coerce arguments. + * + * @private + * @param {Function} func The function to apply a rest parameter to. + * @param {number} [start=func.length-1] The start position of the rest parameter. + * @returns {Function} Returns the new function. + */ + function baseRest(func, start) { + return setToString(overRest(func, start, identity), func + ''); + } + + /** + * The base implementation of `_.sample`. + * + * @private + * @param {Array|Object} collection The collection to sample. + * @returns {*} Returns the random element. + */ + function baseSample(collection) { + return arraySample(values(collection)); + } + + /** + * The base implementation of `_.sampleSize` without param guards. + * + * @private + * @param {Array|Object} collection The collection to sample. + * @param {number} n The number of elements to sample. + * @returns {Array} Returns the random elements. + */ + function baseSampleSize(collection, n) { + var array = values(collection); + return shuffleSelf(array, baseClamp(n, 0, array.length)); + } + + /** + * The base implementation of `_.set`. + * + * @private + * @param {Object} object The object to modify. + * @param {Array|string} path The path of the property to set. + * @param {*} value The value to set. + * @param {Function} [customizer] The function to customize path creation. + * @returns {Object} Returns `object`. + */ + function baseSet(object, path, value, customizer) { + if (!isObject(object)) { + return object; + } + path = castPath(path, object); + + var index = -1, + length = path.length, + lastIndex = length - 1, + nested = object; + + while (nested != null && ++index < length) { + var key = toKey(path[index]), + newValue = value; + + if (index != lastIndex) { + var objValue = nested[key]; + newValue = customizer ? customizer(objValue, key, nested) : undefined; + if (newValue === undefined) { + newValue = isObject(objValue) + ? objValue + : (isIndex(path[index + 1]) ? [] : {}); + } + } + assignValue(nested, key, newValue); + nested = nested[key]; + } + return object; + } + + /** + * The base implementation of `setData` without support for hot loop shorting. + * + * @private + * @param {Function} func The function to associate metadata with. + * @param {*} data The metadata. + * @returns {Function} Returns `func`. + */ + var baseSetData = !metaMap ? identity : function(func, data) { + metaMap.set(func, data); + return func; + }; + + /** + * The base implementation of `setToString` without support for hot loop shorting. + * + * @private + * @param {Function} func The function to modify. + * @param {Function} string The `toString` result. + * @returns {Function} Returns `func`. + */ + var baseSetToString = !defineProperty ? identity : function(func, string) { + return defineProperty(func, 'toString', { + 'configurable': true, + 'enumerable': false, + 'value': constant(string), + 'writable': true + }); + }; + + /** + * The base implementation of `_.shuffle`. + * + * @private + * @param {Array|Object} collection The collection to shuffle. + * @returns {Array} Returns the new shuffled array. + */ + function baseShuffle(collection) { + return shuffleSelf(values(collection)); + } + + /** + * The base implementation of `_.slice` without an iteratee call guard. + * + * @private + * @param {Array} array The array to slice. + * @param {number} [start=0] The start position. + * @param {number} [end=array.length] The end position. + * @returns {Array} Returns the slice of `array`. + */ + function baseSlice(array, start, end) { + var index = -1, + length = array.length; + + if (start < 0) { + start = -start > length ? 0 : (length + start); + } + end = end > length ? length : end; + if (end < 0) { + end += length; + } + length = start > end ? 0 : ((end - start) >>> 0); + start >>>= 0; + + var result = Array(length); + while (++index < length) { + result[index] = array[index + start]; + } + return result; + } + + /** + * The base implementation of `_.some` without support for iteratee shorthands. + * + * @private + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} predicate The function invoked per iteration. + * @returns {boolean} Returns `true` if any element passes the predicate check, + * else `false`. + */ + function baseSome(collection, predicate) { + var result; + + baseEach(collection, function(value, index, collection) { + result = predicate(value, index, collection); + return !result; + }); + return !!result; + } + + /** + * The base implementation of `_.sortedIndex` and `_.sortedLastIndex` which + * performs a binary search of `array` to determine the index at which `value` + * should be inserted into `array` in order to maintain its sort order. + * + * @private + * @param {Array} array The sorted array to inspect. + * @param {*} value The value to evaluate. + * @param {boolean} [retHighest] Specify returning the highest qualified index. + * @returns {number} Returns the index at which `value` should be inserted + * into `array`. + */ + function baseSortedIndex(array, value, retHighest) { + var low = 0, + high = array == null ? low : array.length; + + if (typeof value == 'number' && value === value && high <= HALF_MAX_ARRAY_LENGTH) { + while (low < high) { + var mid = (low + high) >>> 1, + computed = array[mid]; + + if (computed !== null && !isSymbol(computed) && + (retHighest ? (computed <= value) : (computed < value))) { + low = mid + 1; + } else { + high = mid; + } + } + return high; + } + return baseSortedIndexBy(array, value, identity, retHighest); + } + + /** + * The base implementation of `_.sortedIndexBy` and `_.sortedLastIndexBy` + * which invokes `iteratee` for `value` and each element of `array` to compute + * their sort ranking. The iteratee is invoked with one argument; (value). + * + * @private + * @param {Array} array The sorted array to inspect. + * @param {*} value The value to evaluate. + * @param {Function} iteratee The iteratee invoked per element. + * @param {boolean} [retHighest] Specify returning the highest qualified index. + * @returns {number} Returns the index at which `value` should be inserted + * into `array`. + */ + function baseSortedIndexBy(array, value, iteratee, retHighest) { + value = iteratee(value); + + var low = 0, + high = array == null ? 0 : array.length, + valIsNaN = value !== value, + valIsNull = value === null, + valIsSymbol = isSymbol(value), + valIsUndefined = value === undefined; + + while (low < high) { + var mid = nativeFloor((low + high) / 2), + computed = iteratee(array[mid]), + othIsDefined = computed !== undefined, + othIsNull = computed === null, + othIsReflexive = computed === computed, + othIsSymbol = isSymbol(computed); + + if (valIsNaN) { + var setLow = retHighest || othIsReflexive; + } else if (valIsUndefined) { + setLow = othIsReflexive && (retHighest || othIsDefined); + } else if (valIsNull) { + setLow = othIsReflexive && othIsDefined && (retHighest || !othIsNull); + } else if (valIsSymbol) { + setLow = othIsReflexive && othIsDefined && !othIsNull && (retHighest || !othIsSymbol); + } else if (othIsNull || othIsSymbol) { + setLow = false; + } else { + setLow = retHighest ? (computed <= value) : (computed < value); + } + if (setLow) { + low = mid + 1; + } else { + high = mid; + } + } + return nativeMin(high, MAX_ARRAY_INDEX); + } + + /** + * The base implementation of `_.sortedUniq` and `_.sortedUniqBy` without + * support for iteratee shorthands. + * + * @private + * @param {Array} array The array to inspect. + * @param {Function} [iteratee] The iteratee invoked per element. + * @returns {Array} Returns the new duplicate free array. + */ + function baseSortedUniq(array, iteratee) { + var index = -1, + length = array.length, + resIndex = 0, + result = []; + + while (++index < length) { + var value = array[index], + computed = iteratee ? iteratee(value) : value; + + if (!index || !eq(computed, seen)) { + var seen = computed; + result[resIndex++] = value === 0 ? 0 : value; + } + } + return result; + } + + /** + * The base implementation of `_.toNumber` which doesn't ensure correct + * conversions of binary, hexadecimal, or octal string values. + * + * @private + * @param {*} value The value to process. + * @returns {number} Returns the number. + */ + function baseToNumber(value) { + if (typeof value == 'number') { + return value; + } + if (isSymbol(value)) { + return NAN; + } + return +value; + } + + /** + * The base implementation of `_.toString` which doesn't convert nullish + * values to empty strings. + * + * @private + * @param {*} value The value to process. + * @returns {string} Returns the string. + */ + function baseToString(value) { + // Exit early for strings to avoid a performance hit in some environments. + if (typeof value == 'string') { + return value; + } + if (isArray(value)) { + // Recursively convert values (susceptible to call stack limits). + return arrayMap(value, baseToString) + ''; + } + if (isSymbol(value)) { + return symbolToString ? symbolToString.call(value) : ''; + } + var result = (value + ''); + return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result; + } + + /** + * The base implementation of `_.uniqBy` without support for iteratee shorthands. + * + * @private + * @param {Array} array The array to inspect. + * @param {Function} [iteratee] The iteratee invoked per element. + * @param {Function} [comparator] The comparator invoked per element. + * @returns {Array} Returns the new duplicate free array. + */ + function baseUniq(array, iteratee, comparator) { + var index = -1, + includes = arrayIncludes, + length = array.length, + isCommon = true, + result = [], + seen = result; + + if (comparator) { + isCommon = false; + includes = arrayIncludesWith; + } + else if (length >= LARGE_ARRAY_SIZE) { + var set = iteratee ? null : createSet(array); + if (set) { + return setToArray(set); + } + isCommon = false; + includes = cacheHas; + seen = new SetCache; + } + else { + seen = iteratee ? [] : result; + } + outer: + while (++index < length) { + var value = array[index], + computed = iteratee ? iteratee(value) : value; + + value = (comparator || value !== 0) ? value : 0; + if (isCommon && computed === computed) { + var seenIndex = seen.length; + while (seenIndex--) { + if (seen[seenIndex] === computed) { + continue outer; + } + } + if (iteratee) { + seen.push(computed); + } + result.push(value); + } + else if (!includes(seen, computed, comparator)) { + if (seen !== result) { + seen.push(computed); + } + result.push(value); + } + } + return result; + } + + /** + * The base implementation of `_.unset`. + * + * @private + * @param {Object} object The object to modify. + * @param {Array|string} path The property path to unset. + * @returns {boolean} Returns `true` if the property is deleted, else `false`. + */ + function baseUnset(object, path) { + path = castPath(path, object); + object = parent(object, path); + return object == null || delete object[toKey(last(path))]; + } + + /** + * The base implementation of `_.update`. + * + * @private + * @param {Object} object The object to modify. + * @param {Array|string} path The path of the property to update. + * @param {Function} updater The function to produce the updated value. + * @param {Function} [customizer] The function to customize path creation. + * @returns {Object} Returns `object`. + */ + function baseUpdate(object, path, updater, customizer) { + return baseSet(object, path, updater(baseGet(object, path)), customizer); + } + + /** + * The base implementation of methods like `_.dropWhile` and `_.takeWhile` + * without support for iteratee shorthands. + * + * @private + * @param {Array} array The array to query. + * @param {Function} predicate The function invoked per iteration. + * @param {boolean} [isDrop] Specify dropping elements instead of taking them. + * @param {boolean} [fromRight] Specify iterating from right to left. + * @returns {Array} Returns the slice of `array`. + */ + function baseWhile(array, predicate, isDrop, fromRight) { + var length = array.length, + index = fromRight ? length : -1; + + while ((fromRight ? index-- : ++index < length) && + predicate(array[index], index, array)) {} + + return isDrop + ? baseSlice(array, (fromRight ? 0 : index), (fromRight ? index + 1 : length)) + : baseSlice(array, (fromRight ? index + 1 : 0), (fromRight ? length : index)); + } + + /** + * The base implementation of `wrapperValue` which returns the result of + * performing a sequence of actions on the unwrapped `value`, where each + * successive action is supplied the return value of the previous. + * + * @private + * @param {*} value The unwrapped value. + * @param {Array} actions Actions to perform to resolve the unwrapped value. + * @returns {*} Returns the resolved value. + */ + function baseWrapperValue(value, actions) { + var result = value; + if (result instanceof LazyWrapper) { + result = result.value(); + } + return arrayReduce(actions, function(result, action) { + return action.func.apply(action.thisArg, arrayPush([result], action.args)); + }, result); + } + + /** + * The base implementation of methods like `_.xor`, without support for + * iteratee shorthands, that accepts an array of arrays to inspect. + * + * @private + * @param {Array} arrays The arrays to inspect. + * @param {Function} [iteratee] The iteratee invoked per element. + * @param {Function} [comparator] The comparator invoked per element. + * @returns {Array} Returns the new array of values. + */ + function baseXor(arrays, iteratee, comparator) { + var length = arrays.length; + if (length < 2) { + return length ? baseUniq(arrays[0]) : []; + } + var index = -1, + result = Array(length); + + while (++index < length) { + var array = arrays[index], + othIndex = -1; + + while (++othIndex < length) { + if (othIndex != index) { + result[index] = baseDifference(result[index] || array, arrays[othIndex], iteratee, comparator); + } + } + } + return baseUniq(baseFlatten(result, 1), iteratee, comparator); + } + + /** + * This base implementation of `_.zipObject` which assigns values using `assignFunc`. + * + * @private + * @param {Array} props The property identifiers. + * @param {Array} values The property values. + * @param {Function} assignFunc The function to assign values. + * @returns {Object} Returns the new object. + */ + function baseZipObject(props, values, assignFunc) { + var index = -1, + length = props.length, + valsLength = values.length, + result = {}; + + while (++index < length) { + var value = index < valsLength ? values[index] : undefined; + assignFunc(result, props[index], value); + } + return result; + } + + /** + * Casts `value` to an empty array if it's not an array like object. + * + * @private + * @param {*} value The value to inspect. + * @returns {Array|Object} Returns the cast array-like object. + */ + function castArrayLikeObject(value) { + return isArrayLikeObject(value) ? value : []; + } + + /** + * Casts `value` to `identity` if it's not a function. + * + * @private + * @param {*} value The value to inspect. + * @returns {Function} Returns cast function. + */ + function castFunction(value) { + return typeof value == 'function' ? value : identity; + } + + /** + * Casts `value` to a path array if it's not one. + * + * @private + * @param {*} value The value to inspect. + * @param {Object} [object] The object to query keys on. + * @returns {Array} Returns the cast property path array. + */ + function castPath(value, object) { + if (isArray(value)) { + return value; + } + return isKey(value, object) ? [value] : stringToPath(toString(value)); + } + + /** + * A `baseRest` alias which can be replaced with `identity` by module + * replacement plugins. + * + * @private + * @type {Function} + * @param {Function} func The function to apply a rest parameter to. + * @returns {Function} Returns the new function. + */ + var castRest = baseRest; + + /** + * Casts `array` to a slice if it's needed. + * + * @private + * @param {Array} array The array to inspect. + * @param {number} start The start position. + * @param {number} [end=array.length] The end position. + * @returns {Array} Returns the cast slice. + */ + function castSlice(array, start, end) { + var length = array.length; + end = end === undefined ? length : end; + return (!start && end >= length) ? array : baseSlice(array, start, end); + } + + /** + * A simple wrapper around the global [`clearTimeout`](https://mdn.io/clearTimeout). + * + * @private + * @param {number|Object} id The timer id or timeout object of the timer to clear. + */ + var clearTimeout = ctxClearTimeout || function(id) { + return root.clearTimeout(id); + }; + + /** + * Creates a clone of `buffer`. + * + * @private + * @param {Buffer} buffer The buffer to clone. + * @param {boolean} [isDeep] Specify a deep clone. + * @returns {Buffer} Returns the cloned buffer. + */ + function cloneBuffer(buffer, isDeep) { + if (isDeep) { + return buffer.slice(); + } + var length = buffer.length, + result = allocUnsafe ? allocUnsafe(length) : new buffer.constructor(length); + + buffer.copy(result); + return result; + } + + /** + * Creates a clone of `arrayBuffer`. + * + * @private + * @param {ArrayBuffer} arrayBuffer The array buffer to clone. + * @returns {ArrayBuffer} Returns the cloned array buffer. + */ + function cloneArrayBuffer(arrayBuffer) { + var result = new arrayBuffer.constructor(arrayBuffer.byteLength); + new Uint8Array(result).set(new Uint8Array(arrayBuffer)); + return result; + } + + /** + * Creates a clone of `dataView`. + * + * @private + * @param {Object} dataView The data view to clone. + * @param {boolean} [isDeep] Specify a deep clone. + * @returns {Object} Returns the cloned data view. + */ + function cloneDataView(dataView, isDeep) { + var buffer = isDeep ? cloneArrayBuffer(dataView.buffer) : dataView.buffer; + return new dataView.constructor(buffer, dataView.byteOffset, dataView.byteLength); + } + + /** + * Creates a clone of `regexp`. + * + * @private + * @param {Object} regexp The regexp to clone. + * @returns {Object} Returns the cloned regexp. + */ + function cloneRegExp(regexp) { + var result = new regexp.constructor(regexp.source, reFlags.exec(regexp)); + result.lastIndex = regexp.lastIndex; + return result; + } + + /** + * Creates a clone of the `symbol` object. + * + * @private + * @param {Object} symbol The symbol object to clone. + * @returns {Object} Returns the cloned symbol object. + */ + function cloneSymbol(symbol) { + return symbolValueOf ? Object(symbolValueOf.call(symbol)) : {}; + } + + /** + * Creates a clone of `typedArray`. + * + * @private + * @param {Object} typedArray The typed array to clone. + * @param {boolean} [isDeep] Specify a deep clone. + * @returns {Object} Returns the cloned typed array. + */ + function cloneTypedArray(typedArray, isDeep) { + var buffer = isDeep ? cloneArrayBuffer(typedArray.buffer) : typedArray.buffer; + return new typedArray.constructor(buffer, typedArray.byteOffset, typedArray.length); + } + + /** + * Compares values to sort them in ascending order. + * + * @private + * @param {*} value The value to compare. + * @param {*} other The other value to compare. + * @returns {number} Returns the sort order indicator for `value`. + */ + function compareAscending(value, other) { + if (value !== other) { + var valIsDefined = value !== undefined, + valIsNull = value === null, + valIsReflexive = value === value, + valIsSymbol = isSymbol(value); + + var othIsDefined = other !== undefined, + othIsNull = other === null, + othIsReflexive = other === other, + othIsSymbol = isSymbol(other); + + if ((!othIsNull && !othIsSymbol && !valIsSymbol && value > other) || + (valIsSymbol && othIsDefined && othIsReflexive && !othIsNull && !othIsSymbol) || + (valIsNull && othIsDefined && othIsReflexive) || + (!valIsDefined && othIsReflexive) || + !valIsReflexive) { + return 1; + } + if ((!valIsNull && !valIsSymbol && !othIsSymbol && value < other) || + (othIsSymbol && valIsDefined && valIsReflexive && !valIsNull && !valIsSymbol) || + (othIsNull && valIsDefined && valIsReflexive) || + (!othIsDefined && valIsReflexive) || + !othIsReflexive) { + return -1; + } + } + return 0; + } + + /** + * Used by `_.orderBy` to compare multiple properties of a value to another + * and stable sort them. + * + * If `orders` is unspecified, all values are sorted in ascending order. Otherwise, + * specify an order of "desc" for descending or "asc" for ascending sort order + * of corresponding values. + * + * @private + * @param {Object} object The object to compare. + * @param {Object} other The other object to compare. + * @param {boolean[]|string[]} orders The order to sort by for each property. + * @returns {number} Returns the sort order indicator for `object`. + */ + function compareMultiple(object, other, orders) { + var index = -1, + objCriteria = object.criteria, + othCriteria = other.criteria, + length = objCriteria.length, + ordersLength = orders.length; + + while (++index < length) { + var result = compareAscending(objCriteria[index], othCriteria[index]); + if (result) { + if (index >= ordersLength) { + return result; + } + var order = orders[index]; + return result * (order == 'desc' ? -1 : 1); + } + } + // Fixes an `Array#sort` bug in the JS engine embedded in Adobe applications + // that causes it, under certain circumstances, to provide the same value for + // `object` and `other`. See https://github.com/jashkenas/underscore/pull/1247 + // for more details. + // + // This also ensures a stable sort in V8 and other engines. + // See https://bugs.chromium.org/p/v8/issues/detail?id=90 for more details. + return object.index - other.index; + } + + /** + * Creates an array that is the composition of partially applied arguments, + * placeholders, and provided arguments into a single array of arguments. + * + * @private + * @param {Array} args The provided arguments. + * @param {Array} partials The arguments to prepend to those provided. + * @param {Array} holders The `partials` placeholder indexes. + * @params {boolean} [isCurried] Specify composing for a curried function. + * @returns {Array} Returns the new array of composed arguments. + */ + function composeArgs(args, partials, holders, isCurried) { + var argsIndex = -1, + argsLength = args.length, + holdersLength = holders.length, + leftIndex = -1, + leftLength = partials.length, + rangeLength = nativeMax(argsLength - holdersLength, 0), + result = Array(leftLength + rangeLength), + isUncurried = !isCurried; + + while (++leftIndex < leftLength) { + result[leftIndex] = partials[leftIndex]; + } + while (++argsIndex < holdersLength) { + if (isUncurried || argsIndex < argsLength) { + result[holders[argsIndex]] = args[argsIndex]; + } + } + while (rangeLength--) { + result[leftIndex++] = args[argsIndex++]; + } + return result; + } + + /** + * This function is like `composeArgs` except that the arguments composition + * is tailored for `_.partialRight`. + * + * @private + * @param {Array} args The provided arguments. + * @param {Array} partials The arguments to append to those provided. + * @param {Array} holders The `partials` placeholder indexes. + * @params {boolean} [isCurried] Specify composing for a curried function. + * @returns {Array} Returns the new array of composed arguments. + */ + function composeArgsRight(args, partials, holders, isCurried) { + var argsIndex = -1, + argsLength = args.length, + holdersIndex = -1, + holdersLength = holders.length, + rightIndex = -1, + rightLength = partials.length, + rangeLength = nativeMax(argsLength - holdersLength, 0), + result = Array(rangeLength + rightLength), + isUncurried = !isCurried; + + while (++argsIndex < rangeLength) { + result[argsIndex] = args[argsIndex]; + } + var offset = argsIndex; + while (++rightIndex < rightLength) { + result[offset + rightIndex] = partials[rightIndex]; + } + while (++holdersIndex < holdersLength) { + if (isUncurried || argsIndex < argsLength) { + result[offset + holders[holdersIndex]] = args[argsIndex++]; + } + } + return result; + } + + /** + * Copies the values of `source` to `array`. + * + * @private + * @param {Array} source The array to copy values from. + * @param {Array} [array=[]] The array to copy values to. + * @returns {Array} Returns `array`. + */ + function copyArray(source, array) { + var index = -1, + length = source.length; + + array || (array = Array(length)); + while (++index < length) { + array[index] = source[index]; + } + return array; + } + + /** + * Copies properties of `source` to `object`. + * + * @private + * @param {Object} source The object to copy properties from. + * @param {Array} props The property identifiers to copy. + * @param {Object} [object={}] The object to copy properties to. + * @param {Function} [customizer] The function to customize copied values. + * @returns {Object} Returns `object`. + */ + function copyObject(source, props, object, customizer) { + var isNew = !object; + object || (object = {}); + + var index = -1, + length = props.length; + + while (++index < length) { + var key = props[index]; + + var newValue = customizer + ? customizer(object[key], source[key], key, object, source) + : undefined; + + if (newValue === undefined) { + newValue = source[key]; + } + if (isNew) { + baseAssignValue(object, key, newValue); + } else { + assignValue(object, key, newValue); + } + } + return object; + } + + /** + * Copies own symbols of `source` to `object`. + * + * @private + * @param {Object} source The object to copy symbols from. + * @param {Object} [object={}] The object to copy symbols to. + * @returns {Object} Returns `object`. + */ + function copySymbols(source, object) { + return copyObject(source, getSymbols(source), object); + } + + /** + * Copies own and inherited symbols of `source` to `object`. + * + * @private + * @param {Object} source The object to copy symbols from. + * @param {Object} [object={}] The object to copy symbols to. + * @returns {Object} Returns `object`. + */ + function copySymbolsIn(source, object) { + return copyObject(source, getSymbolsIn(source), object); + } + + /** + * Creates a function like `_.groupBy`. + * + * @private + * @param {Function} setter The function to set accumulator values. + * @param {Function} [initializer] The accumulator object initializer. + * @returns {Function} Returns the new aggregator function. + */ + function createAggregator(setter, initializer) { + return function(collection, iteratee) { + var func = isArray(collection) ? arrayAggregator : baseAggregator, + accumulator = initializer ? initializer() : {}; + + return func(collection, setter, getIteratee(iteratee, 2), accumulator); + }; + } + + /** + * Creates a function like `_.assign`. + * + * @private + * @param {Function} assigner The function to assign values. + * @returns {Function} Returns the new assigner function. + */ + function createAssigner(assigner) { + return baseRest(function(object, sources) { + var index = -1, + length = sources.length, + customizer = length > 1 ? sources[length - 1] : undefined, + guard = length > 2 ? sources[2] : undefined; + + customizer = (assigner.length > 3 && typeof customizer == 'function') + ? (length--, customizer) + : undefined; + + if (guard && isIterateeCall(sources[0], sources[1], guard)) { + customizer = length < 3 ? undefined : customizer; + length = 1; + } + object = Object(object); + while (++index < length) { + var source = sources[index]; + if (source) { + assigner(object, source, index, customizer); + } + } + return object; + }); + } + + /** + * Creates a `baseEach` or `baseEachRight` function. + * + * @private + * @param {Function} eachFunc The function to iterate over a collection. + * @param {boolean} [fromRight] Specify iterating from right to left. + * @returns {Function} Returns the new base function. + */ + function createBaseEach(eachFunc, fromRight) { + return function(collection, iteratee) { + if (collection == null) { + return collection; + } + if (!isArrayLike(collection)) { + return eachFunc(collection, iteratee); + } + var length = collection.length, + index = fromRight ? length : -1, + iterable = Object(collection); + + while ((fromRight ? index-- : ++index < length)) { + if (iteratee(iterable[index], index, iterable) === false) { + break; + } + } + return collection; + }; + } + + /** + * Creates a base function for methods like `_.forIn` and `_.forOwn`. + * + * @private + * @param {boolean} [fromRight] Specify iterating from right to left. + * @returns {Function} Returns the new base function. + */ + function createBaseFor(fromRight) { + return function(object, iteratee, keysFunc) { + var index = -1, + iterable = Object(object), + props = keysFunc(object), + length = props.length; + + while (length--) { + var key = props[fromRight ? length : ++index]; + if (iteratee(iterable[key], key, iterable) === false) { + break; + } + } + return object; + }; + } + + /** + * Creates a function that wraps `func` to invoke it with the optional `this` + * binding of `thisArg`. + * + * @private + * @param {Function} func The function to wrap. + * @param {number} bitmask The bitmask flags. See `createWrap` for more details. + * @param {*} [thisArg] The `this` binding of `func`. + * @returns {Function} Returns the new wrapped function. + */ + function createBind(func, bitmask, thisArg) { + var isBind = bitmask & WRAP_BIND_FLAG, + Ctor = createCtor(func); + + function wrapper() { + var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func; + return fn.apply(isBind ? thisArg : this, arguments); + } + return wrapper; + } + + /** + * Creates a function like `_.lowerFirst`. + * + * @private + * @param {string} methodName The name of the `String` case method to use. + * @returns {Function} Returns the new case function. + */ + function createCaseFirst(methodName) { + return function(string) { + string = toString(string); + + var strSymbols = hasUnicode(string) + ? stringToArray(string) + : undefined; + + var chr = strSymbols + ? strSymbols[0] + : string.charAt(0); + + var trailing = strSymbols + ? castSlice(strSymbols, 1).join('') + : string.slice(1); + + return chr[methodName]() + trailing; + }; + } + + /** + * Creates a function like `_.camelCase`. + * + * @private + * @param {Function} callback The function to combine each word. + * @returns {Function} Returns the new compounder function. + */ + function createCompounder(callback) { + return function(string) { + return arrayReduce(words(deburr(string).replace(reApos, '')), callback, ''); + }; + } + + /** + * Creates a function that produces an instance of `Ctor` regardless of + * whether it was invoked as part of a `new` expression or by `call` or `apply`. + * + * @private + * @param {Function} Ctor The constructor to wrap. + * @returns {Function} Returns the new wrapped function. + */ + function createCtor(Ctor) { + return function() { + // Use a `switch` statement to work with class constructors. See + // http://ecma-international.org/ecma-262/7.0/#sec-ecmascript-function-objects-call-thisargument-argumentslist + // for more details. + var args = arguments; + switch (args.length) { + case 0: return new Ctor; + case 1: return new Ctor(args[0]); + case 2: return new Ctor(args[0], args[1]); + case 3: return new Ctor(args[0], args[1], args[2]); + case 4: return new Ctor(args[0], args[1], args[2], args[3]); + case 5: return new Ctor(args[0], args[1], args[2], args[3], args[4]); + case 6: return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5]); + case 7: return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5], args[6]); + } + var thisBinding = baseCreate(Ctor.prototype), + result = Ctor.apply(thisBinding, args); + + // Mimic the constructor's `return` behavior. + // See https://es5.github.io/#x13.2.2 for more details. + return isObject(result) ? result : thisBinding; + }; + } + + /** + * Creates a function that wraps `func` to enable currying. + * + * @private + * @param {Function} func The function to wrap. + * @param {number} bitmask The bitmask flags. See `createWrap` for more details. + * @param {number} arity The arity of `func`. + * @returns {Function} Returns the new wrapped function. + */ + function createCurry(func, bitmask, arity) { + var Ctor = createCtor(func); + + function wrapper() { + var length = arguments.length, + args = Array(length), + index = length, + placeholder = getHolder(wrapper); + + while (index--) { + args[index] = arguments[index]; + } + var holders = (length < 3 && args[0] !== placeholder && args[length - 1] !== placeholder) + ? [] + : replaceHolders(args, placeholder); + + length -= holders.length; + if (length < arity) { + return createRecurry( + func, bitmask, createHybrid, wrapper.placeholder, undefined, + args, holders, undefined, undefined, arity - length); + } + var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func; + return apply(fn, this, args); + } + return wrapper; + } + + /** + * Creates a `_.find` or `_.findLast` function. + * + * @private + * @param {Function} findIndexFunc The function to find the collection index. + * @returns {Function} Returns the new find function. + */ + function createFind(findIndexFunc) { + return function(collection, predicate, fromIndex) { + var iterable = Object(collection); + if (!isArrayLike(collection)) { + var iteratee = getIteratee(predicate, 3); + collection = keys(collection); + predicate = function(key) { return iteratee(iterable[key], key, iterable); }; + } + var index = findIndexFunc(collection, predicate, fromIndex); + return index > -1 ? iterable[iteratee ? collection[index] : index] : undefined; + }; + } + + /** + * Creates a `_.flow` or `_.flowRight` function. + * + * @private + * @param {boolean} [fromRight] Specify iterating from right to left. + * @returns {Function} Returns the new flow function. + */ + function createFlow(fromRight) { + return flatRest(function(funcs) { + var length = funcs.length, + index = length, + prereq = LodashWrapper.prototype.thru; + + if (fromRight) { + funcs.reverse(); + } + while (index--) { + var func = funcs[index]; + if (typeof func != 'function') { + throw new TypeError(FUNC_ERROR_TEXT); + } + if (prereq && !wrapper && getFuncName(func) == 'wrapper') { + var wrapper = new LodashWrapper([], true); + } + } + index = wrapper ? index : length; + while (++index < length) { + func = funcs[index]; + + var funcName = getFuncName(func), + data = funcName == 'wrapper' ? getData(func) : undefined; + + if (data && isLaziable(data[0]) && + data[1] == (WRAP_ARY_FLAG | WRAP_CURRY_FLAG | WRAP_PARTIAL_FLAG | WRAP_REARG_FLAG) && + !data[4].length && data[9] == 1 + ) { + wrapper = wrapper[getFuncName(data[0])].apply(wrapper, data[3]); + } else { + wrapper = (func.length == 1 && isLaziable(func)) + ? wrapper[funcName]() + : wrapper.thru(func); + } + } + return function() { + var args = arguments, + value = args[0]; + + if (wrapper && args.length == 1 && isArray(value)) { + return wrapper.plant(value).value(); + } + var index = 0, + result = length ? funcs[index].apply(this, args) : value; + + while (++index < length) { + result = funcs[index].call(this, result); + } + return result; + }; + }); + } + + /** + * Creates a function that wraps `func` to invoke it with optional `this` + * binding of `thisArg`, partial application, and currying. + * + * @private + * @param {Function|string} func The function or method name to wrap. + * @param {number} bitmask The bitmask flags. See `createWrap` for more details. + * @param {*} [thisArg] The `this` binding of `func`. + * @param {Array} [partials] The arguments to prepend to those provided to + * the new function. + * @param {Array} [holders] The `partials` placeholder indexes. + * @param {Array} [partialsRight] The arguments to append to those provided + * to the new function. + * @param {Array} [holdersRight] The `partialsRight` placeholder indexes. + * @param {Array} [argPos] The argument positions of the new function. + * @param {number} [ary] The arity cap of `func`. + * @param {number} [arity] The arity of `func`. + * @returns {Function} Returns the new wrapped function. + */ + function createHybrid(func, bitmask, thisArg, partials, holders, partialsRight, holdersRight, argPos, ary, arity) { + var isAry = bitmask & WRAP_ARY_FLAG, + isBind = bitmask & WRAP_BIND_FLAG, + isBindKey = bitmask & WRAP_BIND_KEY_FLAG, + isCurried = bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG), + isFlip = bitmask & WRAP_FLIP_FLAG, + Ctor = isBindKey ? undefined : createCtor(func); + + function wrapper() { + var length = arguments.length, + args = Array(length), + index = length; + + while (index--) { + args[index] = arguments[index]; + } + if (isCurried) { + var placeholder = getHolder(wrapper), + holdersCount = countHolders(args, placeholder); + } + if (partials) { + args = composeArgs(args, partials, holders, isCurried); + } + if (partialsRight) { + args = composeArgsRight(args, partialsRight, holdersRight, isCurried); + } + length -= holdersCount; + if (isCurried && length < arity) { + var newHolders = replaceHolders(args, placeholder); + return createRecurry( + func, bitmask, createHybrid, wrapper.placeholder, thisArg, + args, newHolders, argPos, ary, arity - length + ); + } + var thisBinding = isBind ? thisArg : this, + fn = isBindKey ? thisBinding[func] : func; + + length = args.length; + if (argPos) { + args = reorder(args, argPos); + } else if (isFlip && length > 1) { + args.reverse(); + } + if (isAry && ary < length) { + args.length = ary; + } + if (this && this !== root && this instanceof wrapper) { + fn = Ctor || createCtor(fn); + } + return fn.apply(thisBinding, args); + } + return wrapper; + } + + /** + * Creates a function like `_.invertBy`. + * + * @private + * @param {Function} setter The function to set accumulator values. + * @param {Function} toIteratee The function to resolve iteratees. + * @returns {Function} Returns the new inverter function. + */ + function createInverter(setter, toIteratee) { + return function(object, iteratee) { + return baseInverter(object, setter, toIteratee(iteratee), {}); + }; + } + + /** + * Creates a function that performs a mathematical operation on two values. + * + * @private + * @param {Function} operator The function to perform the operation. + * @param {number} [defaultValue] The value used for `undefined` arguments. + * @returns {Function} Returns the new mathematical operation function. + */ + function createMathOperation(operator, defaultValue) { + return function(value, other) { + var result; + if (value === undefined && other === undefined) { + return defaultValue; + } + if (value !== undefined) { + result = value; + } + if (other !== undefined) { + if (result === undefined) { + return other; + } + if (typeof value == 'string' || typeof other == 'string') { + value = baseToString(value); + other = baseToString(other); + } else { + value = baseToNumber(value); + other = baseToNumber(other); + } + result = operator(value, other); + } + return result; + }; + } + + /** + * Creates a function like `_.over`. + * + * @private + * @param {Function} arrayFunc The function to iterate over iteratees. + * @returns {Function} Returns the new over function. + */ + function createOver(arrayFunc) { + return flatRest(function(iteratees) { + iteratees = arrayMap(iteratees, baseUnary(getIteratee())); + return baseRest(function(args) { + var thisArg = this; + return arrayFunc(iteratees, function(iteratee) { + return apply(iteratee, thisArg, args); + }); + }); + }); + } + + /** + * Creates the padding for `string` based on `length`. The `chars` string + * is truncated if the number of characters exceeds `length`. + * + * @private + * @param {number} length The padding length. + * @param {string} [chars=' '] The string used as padding. + * @returns {string} Returns the padding for `string`. + */ + function createPadding(length, chars) { + chars = chars === undefined ? ' ' : baseToString(chars); + + var charsLength = chars.length; + if (charsLength < 2) { + return charsLength ? baseRepeat(chars, length) : chars; + } + var result = baseRepeat(chars, nativeCeil(length / stringSize(chars))); + return hasUnicode(chars) + ? castSlice(stringToArray(result), 0, length).join('') + : result.slice(0, length); + } + + /** + * Creates a function that wraps `func` to invoke it with the `this` binding + * of `thisArg` and `partials` prepended to the arguments it receives. + * + * @private + * @param {Function} func The function to wrap. + * @param {number} bitmask The bitmask flags. See `createWrap` for more details. + * @param {*} thisArg The `this` binding of `func`. + * @param {Array} partials The arguments to prepend to those provided to + * the new function. + * @returns {Function} Returns the new wrapped function. + */ + function createPartial(func, bitmask, thisArg, partials) { + var isBind = bitmask & WRAP_BIND_FLAG, + Ctor = createCtor(func); + + function wrapper() { + var argsIndex = -1, + argsLength = arguments.length, + leftIndex = -1, + leftLength = partials.length, + args = Array(leftLength + argsLength), + fn = (this && this !== root && this instanceof wrapper) ? Ctor : func; + + while (++leftIndex < leftLength) { + args[leftIndex] = partials[leftIndex]; + } + while (argsLength--) { + args[leftIndex++] = arguments[++argsIndex]; + } + return apply(fn, isBind ? thisArg : this, args); + } + return wrapper; + } + + /** + * Creates a `_.range` or `_.rangeRight` function. + * + * @private + * @param {boolean} [fromRight] Specify iterating from right to left. + * @returns {Function} Returns the new range function. + */ + function createRange(fromRight) { + return function(start, end, step) { + if (step && typeof step != 'number' && isIterateeCall(start, end, step)) { + end = step = undefined; + } + // Ensure the sign of `-0` is preserved. + start = toFinite(start); + if (end === undefined) { + end = start; + start = 0; + } else { + end = toFinite(end); + } + step = step === undefined ? (start < end ? 1 : -1) : toFinite(step); + return baseRange(start, end, step, fromRight); + }; + } + + /** + * Creates a function that performs a relational operation on two values. + * + * @private + * @param {Function} operator The function to perform the operation. + * @returns {Function} Returns the new relational operation function. + */ + function createRelationalOperation(operator) { + return function(value, other) { + if (!(typeof value == 'string' && typeof other == 'string')) { + value = toNumber(value); + other = toNumber(other); + } + return operator(value, other); + }; + } + + /** + * Creates a function that wraps `func` to continue currying. + * + * @private + * @param {Function} func The function to wrap. + * @param {number} bitmask The bitmask flags. See `createWrap` for more details. + * @param {Function} wrapFunc The function to create the `func` wrapper. + * @param {*} placeholder The placeholder value. + * @param {*} [thisArg] The `this` binding of `func`. + * @param {Array} [partials] The arguments to prepend to those provided to + * the new function. + * @param {Array} [holders] The `partials` placeholder indexes. + * @param {Array} [argPos] The argument positions of the new function. + * @param {number} [ary] The arity cap of `func`. + * @param {number} [arity] The arity of `func`. + * @returns {Function} Returns the new wrapped function. + */ + function createRecurry(func, bitmask, wrapFunc, placeholder, thisArg, partials, holders, argPos, ary, arity) { + var isCurry = bitmask & WRAP_CURRY_FLAG, + newHolders = isCurry ? holders : undefined, + newHoldersRight = isCurry ? undefined : holders, + newPartials = isCurry ? partials : undefined, + newPartialsRight = isCurry ? undefined : partials; + + bitmask |= (isCurry ? WRAP_PARTIAL_FLAG : WRAP_PARTIAL_RIGHT_FLAG); + bitmask &= ~(isCurry ? WRAP_PARTIAL_RIGHT_FLAG : WRAP_PARTIAL_FLAG); + + if (!(bitmask & WRAP_CURRY_BOUND_FLAG)) { + bitmask &= ~(WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG); + } + var newData = [ + func, bitmask, thisArg, newPartials, newHolders, newPartialsRight, + newHoldersRight, argPos, ary, arity + ]; + + var result = wrapFunc.apply(undefined, newData); + if (isLaziable(func)) { + setData(result, newData); + } + result.placeholder = placeholder; + return setWrapToString(result, func, bitmask); + } + + /** + * Creates a function like `_.round`. + * + * @private + * @param {string} methodName The name of the `Math` method to use when rounding. + * @returns {Function} Returns the new round function. + */ + function createRound(methodName) { + var func = Math[methodName]; + return function(number, precision) { + number = toNumber(number); + precision = precision == null ? 0 : nativeMin(toInteger(precision), 292); + if (precision && nativeIsFinite(number)) { + // Shift with exponential notation to avoid floating-point issues. + // See [MDN](https://mdn.io/round#Examples) for more details. + var pair = (toString(number) + 'e').split('e'), + value = func(pair[0] + 'e' + (+pair[1] + precision)); + + pair = (toString(value) + 'e').split('e'); + return +(pair[0] + 'e' + (+pair[1] - precision)); + } + return func(number); + }; + } + + /** + * Creates a set object of `values`. + * + * @private + * @param {Array} values The values to add to the set. + * @returns {Object} Returns the new set. + */ + var createSet = !(Set && (1 / setToArray(new Set([,-0]))[1]) == INFINITY) ? noop : function(values) { + return new Set(values); + }; + + /** + * Creates a `_.toPairs` or `_.toPairsIn` function. + * + * @private + * @param {Function} keysFunc The function to get the keys of a given object. + * @returns {Function} Returns the new pairs function. + */ + function createToPairs(keysFunc) { + return function(object) { + var tag = getTag(object); + if (tag == mapTag) { + return mapToArray(object); + } + if (tag == setTag) { + return setToPairs(object); + } + return baseToPairs(object, keysFunc(object)); + }; + } + + /** + * Creates a function that either curries or invokes `func` with optional + * `this` binding and partially applied arguments. + * + * @private + * @param {Function|string} func The function or method name to wrap. + * @param {number} bitmask The bitmask flags. + * 1 - `_.bind` + * 2 - `_.bindKey` + * 4 - `_.curry` or `_.curryRight` of a bound function + * 8 - `_.curry` + * 16 - `_.curryRight` + * 32 - `_.partial` + * 64 - `_.partialRight` + * 128 - `_.rearg` + * 256 - `_.ary` + * 512 - `_.flip` + * @param {*} [thisArg] The `this` binding of `func`. + * @param {Array} [partials] The arguments to be partially applied. + * @param {Array} [holders] The `partials` placeholder indexes. + * @param {Array} [argPos] The argument positions of the new function. + * @param {number} [ary] The arity cap of `func`. + * @param {number} [arity] The arity of `func`. + * @returns {Function} Returns the new wrapped function. + */ + function createWrap(func, bitmask, thisArg, partials, holders, argPos, ary, arity) { + var isBindKey = bitmask & WRAP_BIND_KEY_FLAG; + if (!isBindKey && typeof func != 'function') { + throw new TypeError(FUNC_ERROR_TEXT); + } + var length = partials ? partials.length : 0; + if (!length) { + bitmask &= ~(WRAP_PARTIAL_FLAG | WRAP_PARTIAL_RIGHT_FLAG); + partials = holders = undefined; + } + ary = ary === undefined ? ary : nativeMax(toInteger(ary), 0); + arity = arity === undefined ? arity : toInteger(arity); + length -= holders ? holders.length : 0; + + if (bitmask & WRAP_PARTIAL_RIGHT_FLAG) { + var partialsRight = partials, + holdersRight = holders; + + partials = holders = undefined; + } + var data = isBindKey ? undefined : getData(func); + + var newData = [ + func, bitmask, thisArg, partials, holders, partialsRight, holdersRight, + argPos, ary, arity + ]; + + if (data) { + mergeData(newData, data); + } + func = newData[0]; + bitmask = newData[1]; + thisArg = newData[2]; + partials = newData[3]; + holders = newData[4]; + arity = newData[9] = newData[9] === undefined + ? (isBindKey ? 0 : func.length) + : nativeMax(newData[9] - length, 0); + + if (!arity && bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG)) { + bitmask &= ~(WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG); + } + if (!bitmask || bitmask == WRAP_BIND_FLAG) { + var result = createBind(func, bitmask, thisArg); + } else if (bitmask == WRAP_CURRY_FLAG || bitmask == WRAP_CURRY_RIGHT_FLAG) { + result = createCurry(func, bitmask, arity); + } else if ((bitmask == WRAP_PARTIAL_FLAG || bitmask == (WRAP_BIND_FLAG | WRAP_PARTIAL_FLAG)) && !holders.length) { + result = createPartial(func, bitmask, thisArg, partials); + } else { + result = createHybrid.apply(undefined, newData); + } + var setter = data ? baseSetData : setData; + return setWrapToString(setter(result, newData), func, bitmask); + } + + /** + * Used by `_.defaults` to customize its `_.assignIn` use to assign properties + * of source objects to the destination object for all destination properties + * that resolve to `undefined`. + * + * @private + * @param {*} objValue The destination value. + * @param {*} srcValue The source value. + * @param {string} key The key of the property to assign. + * @param {Object} object The parent object of `objValue`. + * @returns {*} Returns the value to assign. + */ + function customDefaultsAssignIn(objValue, srcValue, key, object) { + if (objValue === undefined || + (eq(objValue, objectProto[key]) && !hasOwnProperty.call(object, key))) { + return srcValue; + } + return objValue; + } + + /** + * Used by `_.defaultsDeep` to customize its `_.merge` use to merge source + * objects into destination objects that are passed thru. + * + * @private + * @param {*} objValue The destination value. + * @param {*} srcValue The source value. + * @param {string} key The key of the property to merge. + * @param {Object} object The parent object of `objValue`. + * @param {Object} source The parent object of `srcValue`. + * @param {Object} [stack] Tracks traversed source values and their merged + * counterparts. + * @returns {*} Returns the value to assign. + */ + function customDefaultsMerge(objValue, srcValue, key, object, source, stack) { + if (isObject(objValue) && isObject(srcValue)) { + // Recursively merge objects and arrays (susceptible to call stack limits). + stack.set(srcValue, objValue); + baseMerge(objValue, srcValue, undefined, customDefaultsMerge, stack); + stack['delete'](srcValue); + } + return objValue; + } + + /** + * Used by `_.omit` to customize its `_.cloneDeep` use to only clone plain + * objects. + * + * @private + * @param {*} value The value to inspect. + * @param {string} key The key of the property to inspect. + * @returns {*} Returns the uncloned value or `undefined` to defer cloning to `_.cloneDeep`. + */ + function customOmitClone(value) { + return isPlainObject(value) ? undefined : value; + } + + /** + * A specialized version of `baseIsEqualDeep` for arrays with support for + * partial deep comparisons. + * + * @private + * @param {Array} array The array to compare. + * @param {Array} other The other array to compare. + * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details. + * @param {Function} customizer The function to customize comparisons. + * @param {Function} equalFunc The function to determine equivalents of values. + * @param {Object} stack Tracks traversed `array` and `other` objects. + * @returns {boolean} Returns `true` if the arrays are equivalent, else `false`. + */ + function equalArrays(array, other, bitmask, customizer, equalFunc, stack) { + var isPartial = bitmask & COMPARE_PARTIAL_FLAG, + arrLength = array.length, + othLength = other.length; + + if (arrLength != othLength && !(isPartial && othLength > arrLength)) { + return false; + } + // Assume cyclic values are equal. + var stacked = stack.get(array); + if (stacked && stack.get(other)) { + return stacked == other; + } + var index = -1, + result = true, + seen = (bitmask & COMPARE_UNORDERED_FLAG) ? new SetCache : undefined; + + stack.set(array, other); + stack.set(other, array); + + // Ignore non-index properties. + while (++index < arrLength) { + var arrValue = array[index], + othValue = other[index]; + + if (customizer) { + var compared = isPartial + ? customizer(othValue, arrValue, index, other, array, stack) + : customizer(arrValue, othValue, index, array, other, stack); + } + if (compared !== undefined) { + if (compared) { + continue; + } + result = false; + break; + } + // Recursively compare arrays (susceptible to call stack limits). + if (seen) { + if (!arraySome(other, function(othValue, othIndex) { + if (!cacheHas(seen, othIndex) && + (arrValue === othValue || equalFunc(arrValue, othValue, bitmask, customizer, stack))) { + return seen.push(othIndex); + } + })) { + result = false; + break; + } + } else if (!( + arrValue === othValue || + equalFunc(arrValue, othValue, bitmask, customizer, stack) + )) { + result = false; + break; + } + } + stack['delete'](array); + stack['delete'](other); + return result; + } + + /** + * A specialized version of `baseIsEqualDeep` for comparing objects of + * the same `toStringTag`. + * + * **Note:** This function only supports comparing values with tags of + * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`. + * + * @private + * @param {Object} object The object to compare. + * @param {Object} other The other object to compare. + * @param {string} tag The `toStringTag` of the objects to compare. + * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details. + * @param {Function} customizer The function to customize comparisons. + * @param {Function} equalFunc The function to determine equivalents of values. + * @param {Object} stack Tracks traversed `object` and `other` objects. + * @returns {boolean} Returns `true` if the objects are equivalent, else `false`. + */ + function equalByTag(object, other, tag, bitmask, customizer, equalFunc, stack) { + switch (tag) { + case dataViewTag: + if ((object.byteLength != other.byteLength) || + (object.byteOffset != other.byteOffset)) { + return false; + } + object = object.buffer; + other = other.buffer; + + case arrayBufferTag: + if ((object.byteLength != other.byteLength) || + !equalFunc(new Uint8Array(object), new Uint8Array(other))) { + return false; + } + return true; + + case boolTag: + case dateTag: + case numberTag: + // Coerce booleans to `1` or `0` and dates to milliseconds. + // Invalid dates are coerced to `NaN`. + return eq(+object, +other); + + case errorTag: + return object.name == other.name && object.message == other.message; + + case regexpTag: + case stringTag: + // Coerce regexes to strings and treat strings, primitives and objects, + // as equal. See http://www.ecma-international.org/ecma-262/7.0/#sec-regexp.prototype.tostring + // for more details. + return object == (other + ''); + + case mapTag: + var convert = mapToArray; + + case setTag: + var isPartial = bitmask & COMPARE_PARTIAL_FLAG; + convert || (convert = setToArray); + + if (object.size != other.size && !isPartial) { + return false; + } + // Assume cyclic values are equal. + var stacked = stack.get(object); + if (stacked) { + return stacked == other; + } + bitmask |= COMPARE_UNORDERED_FLAG; + + // Recursively compare objects (susceptible to call stack limits). + stack.set(object, other); + var result = equalArrays(convert(object), convert(other), bitmask, customizer, equalFunc, stack); + stack['delete'](object); + return result; + + case symbolTag: + if (symbolValueOf) { + return symbolValueOf.call(object) == symbolValueOf.call(other); + } + } + return false; + } + + /** + * A specialized version of `baseIsEqualDeep` for objects with support for + * partial deep comparisons. + * + * @private + * @param {Object} object The object to compare. + * @param {Object} other The other object to compare. + * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details. + * @param {Function} customizer The function to customize comparisons. + * @param {Function} equalFunc The function to determine equivalents of values. + * @param {Object} stack Tracks traversed `object` and `other` objects. + * @returns {boolean} Returns `true` if the objects are equivalent, else `false`. + */ + function equalObjects(object, other, bitmask, customizer, equalFunc, stack) { + var isPartial = bitmask & COMPARE_PARTIAL_FLAG, + objProps = getAllKeys(object), + objLength = objProps.length, + othProps = getAllKeys(other), + othLength = othProps.length; + + if (objLength != othLength && !isPartial) { + return false; + } + var index = objLength; + while (index--) { + var key = objProps[index]; + if (!(isPartial ? key in other : hasOwnProperty.call(other, key))) { + return false; + } + } + // Assume cyclic values are equal. + var stacked = stack.get(object); + if (stacked && stack.get(other)) { + return stacked == other; + } + var result = true; + stack.set(object, other); + stack.set(other, object); + + var skipCtor = isPartial; + while (++index < objLength) { + key = objProps[index]; + var objValue = object[key], + othValue = other[key]; + + if (customizer) { + var compared = isPartial + ? customizer(othValue, objValue, key, other, object, stack) + : customizer(objValue, othValue, key, object, other, stack); + } + // Recursively compare objects (susceptible to call stack limits). + if (!(compared === undefined + ? (objValue === othValue || equalFunc(objValue, othValue, bitmask, customizer, stack)) + : compared + )) { + result = false; + break; + } + skipCtor || (skipCtor = key == 'constructor'); + } + if (result && !skipCtor) { + var objCtor = object.constructor, + othCtor = other.constructor; + + // Non `Object` object instances with different constructors are not equal. + if (objCtor != othCtor && + ('constructor' in object && 'constructor' in other) && + !(typeof objCtor == 'function' && objCtor instanceof objCtor && + typeof othCtor == 'function' && othCtor instanceof othCtor)) { + result = false; + } + } + stack['delete'](object); + stack['delete'](other); + return result; + } + + /** + * A specialized version of `baseRest` which flattens the rest array. + * + * @private + * @param {Function} func The function to apply a rest parameter to. + * @returns {Function} Returns the new function. + */ + function flatRest(func) { + return setToString(overRest(func, undefined, flatten), func + ''); + } + + /** + * Creates an array of own enumerable property names and symbols of `object`. + * + * @private + * @param {Object} object The object to query. + * @returns {Array} Returns the array of property names and symbols. + */ + function getAllKeys(object) { + return baseGetAllKeys(object, keys, getSymbols); + } + + /** + * Creates an array of own and inherited enumerable property names and + * symbols of `object`. + * + * @private + * @param {Object} object The object to query. + * @returns {Array} Returns the array of property names and symbols. + */ + function getAllKeysIn(object) { + return baseGetAllKeys(object, keysIn, getSymbolsIn); + } + + /** + * Gets metadata for `func`. + * + * @private + * @param {Function} func The function to query. + * @returns {*} Returns the metadata for `func`. + */ + var getData = !metaMap ? noop : function(func) { + return metaMap.get(func); + }; + + /** + * Gets the name of `func`. + * + * @private + * @param {Function} func The function to query. + * @returns {string} Returns the function name. + */ + function getFuncName(func) { + var result = (func.name + ''), + array = realNames[result], + length = hasOwnProperty.call(realNames, result) ? array.length : 0; + + while (length--) { + var data = array[length], + otherFunc = data.func; + if (otherFunc == null || otherFunc == func) { + return data.name; + } + } + return result; + } + + /** + * Gets the argument placeholder value for `func`. + * + * @private + * @param {Function} func The function to inspect. + * @returns {*} Returns the placeholder value. + */ + function getHolder(func) { + var object = hasOwnProperty.call(lodash, 'placeholder') ? lodash : func; + return object.placeholder; + } + + /** + * Gets the appropriate "iteratee" function. If `_.iteratee` is customized, + * this function returns the custom method, otherwise it returns `baseIteratee`. + * If arguments are provided, the chosen function is invoked with them and + * its result is returned. + * + * @private + * @param {*} [value] The value to convert to an iteratee. + * @param {number} [arity] The arity of the created iteratee. + * @returns {Function} Returns the chosen function or its result. + */ + function getIteratee() { + var result = lodash.iteratee || iteratee; + result = result === iteratee ? baseIteratee : result; + return arguments.length ? result(arguments[0], arguments[1]) : result; + } + + /** + * Gets the data for `map`. + * + * @private + * @param {Object} map The map to query. + * @param {string} key The reference key. + * @returns {*} Returns the map data. + */ + function getMapData(map, key) { + var data = map.__data__; + return isKeyable(key) + ? data[typeof key == 'string' ? 'string' : 'hash'] + : data.map; + } + + /** + * Gets the property names, values, and compare flags of `object`. + * + * @private + * @param {Object} object The object to query. + * @returns {Array} Returns the match data of `object`. + */ + function getMatchData(object) { + var result = keys(object), + length = result.length; + + while (length--) { + var key = result[length], + value = object[key]; + + result[length] = [key, value, isStrictComparable(value)]; + } + return result; + } + + /** + * Gets the native function at `key` of `object`. + * + * @private + * @param {Object} object The object to query. + * @param {string} key The key of the method to get. + * @returns {*} Returns the function if it's native, else `undefined`. + */ + function getNative(object, key) { + var value = getValue(object, key); + return baseIsNative(value) ? value : undefined; + } + + /** + * A specialized version of `baseGetTag` which ignores `Symbol.toStringTag` values. + * + * @private + * @param {*} value The value to query. + * @returns {string} Returns the raw `toStringTag`. + */ + function getRawTag(value) { + var isOwn = hasOwnProperty.call(value, symToStringTag), + tag = value[symToStringTag]; + + try { + value[symToStringTag] = undefined; + var unmasked = true; + } catch (e) {} + + var result = nativeObjectToString.call(value); + if (unmasked) { + if (isOwn) { + value[symToStringTag] = tag; + } else { + delete value[symToStringTag]; + } + } + return result; + } + + /** + * Creates an array of the own enumerable symbols of `object`. + * + * @private + * @param {Object} object The object to query. + * @returns {Array} Returns the array of symbols. + */ + var getSymbols = !nativeGetSymbols ? stubArray : function(object) { + if (object == null) { + return []; + } + object = Object(object); + return arrayFilter(nativeGetSymbols(object), function(symbol) { + return propertyIsEnumerable.call(object, symbol); + }); + }; + + /** + * Creates an array of the own and inherited enumerable symbols of `object`. + * + * @private + * @param {Object} object The object to query. + * @returns {Array} Returns the array of symbols. + */ + var getSymbolsIn = !nativeGetSymbols ? stubArray : function(object) { + var result = []; + while (object) { + arrayPush(result, getSymbols(object)); + object = getPrototype(object); + } + return result; + }; + + /** + * Gets the `toStringTag` of `value`. + * + * @private + * @param {*} value The value to query. + * @returns {string} Returns the `toStringTag`. + */ + var getTag = baseGetTag; + + // Fallback for data views, maps, sets, and weak maps in IE 11 and promises in Node.js < 6. + if ((DataView && getTag(new DataView(new ArrayBuffer(1))) != dataViewTag) || + (Map && getTag(new Map) != mapTag) || + (Promise && getTag(Promise.resolve()) != promiseTag) || + (Set && getTag(new Set) != setTag) || + (WeakMap && getTag(new WeakMap) != weakMapTag)) { + getTag = function(value) { + var result = baseGetTag(value), + Ctor = result == objectTag ? value.constructor : undefined, + ctorString = Ctor ? toSource(Ctor) : ''; + + if (ctorString) { + switch (ctorString) { + case dataViewCtorString: return dataViewTag; + case mapCtorString: return mapTag; + case promiseCtorString: return promiseTag; + case setCtorString: return setTag; + case weakMapCtorString: return weakMapTag; + } + } + return result; + }; + } + + /** + * Gets the view, applying any `transforms` to the `start` and `end` positions. + * + * @private + * @param {number} start The start of the view. + * @param {number} end The end of the view. + * @param {Array} transforms The transformations to apply to the view. + * @returns {Object} Returns an object containing the `start` and `end` + * positions of the view. + */ + function getView(start, end, transforms) { + var index = -1, + length = transforms.length; + + while (++index < length) { + var data = transforms[index], + size = data.size; + + switch (data.type) { + case 'drop': start += size; break; + case 'dropRight': end -= size; break; + case 'take': end = nativeMin(end, start + size); break; + case 'takeRight': start = nativeMax(start, end - size); break; + } + } + return { 'start': start, 'end': end }; + } + + /** + * Extracts wrapper details from the `source` body comment. + * + * @private + * @param {string} source The source to inspect. + * @returns {Array} Returns the wrapper details. + */ + function getWrapDetails(source) { + var match = source.match(reWrapDetails); + return match ? match[1].split(reSplitDetails) : []; + } + + /** + * Checks if `path` exists on `object`. + * + * @private + * @param {Object} object The object to query. + * @param {Array|string} path The path to check. + * @param {Function} hasFunc The function to check properties. + * @returns {boolean} Returns `true` if `path` exists, else `false`. + */ + function hasPath(object, path, hasFunc) { + path = castPath(path, object); + + var index = -1, + length = path.length, + result = false; + + while (++index < length) { + var key = toKey(path[index]); + if (!(result = object != null && hasFunc(object, key))) { + break; + } + object = object[key]; + } + if (result || ++index != length) { + return result; + } + length = object == null ? 0 : object.length; + return !!length && isLength(length) && isIndex(key, length) && + (isArray(object) || isArguments(object)); + } + + /** + * Initializes an array clone. + * + * @private + * @param {Array} array The array to clone. + * @returns {Array} Returns the initialized clone. + */ + function initCloneArray(array) { + var length = array.length, + result = new array.constructor(length); + + // Add properties assigned by `RegExp#exec`. + if (length && typeof array[0] == 'string' && hasOwnProperty.call(array, 'index')) { + result.index = array.index; + result.input = array.input; + } + return result; + } + + /** + * Initializes an object clone. + * + * @private + * @param {Object} object The object to clone. + * @returns {Object} Returns the initialized clone. + */ + function initCloneObject(object) { + return (typeof object.constructor == 'function' && !isPrototype(object)) + ? baseCreate(getPrototype(object)) + : {}; + } + + /** + * Initializes an object clone based on its `toStringTag`. + * + * **Note:** This function only supports cloning values with tags of + * `Boolean`, `Date`, `Error`, `Map`, `Number`, `RegExp`, `Set`, or `String`. + * + * @private + * @param {Object} object The object to clone. + * @param {string} tag The `toStringTag` of the object to clone. + * @param {boolean} [isDeep] Specify a deep clone. + * @returns {Object} Returns the initialized clone. + */ + function initCloneByTag(object, tag, isDeep) { + var Ctor = object.constructor; + switch (tag) { + case arrayBufferTag: + return cloneArrayBuffer(object); + + case boolTag: + case dateTag: + return new Ctor(+object); + + case dataViewTag: + return cloneDataView(object, isDeep); + + case float32Tag: case float64Tag: + case int8Tag: case int16Tag: case int32Tag: + case uint8Tag: case uint8ClampedTag: case uint16Tag: case uint32Tag: + return cloneTypedArray(object, isDeep); + + case mapTag: + return new Ctor; + + case numberTag: + case stringTag: + return new Ctor(object); + + case regexpTag: + return cloneRegExp(object); + + case setTag: + return new Ctor; + + case symbolTag: + return cloneSymbol(object); + } + } + + /** + * Inserts wrapper `details` in a comment at the top of the `source` body. + * + * @private + * @param {string} source The source to modify. + * @returns {Array} details The details to insert. + * @returns {string} Returns the modified source. + */ + function insertWrapDetails(source, details) { + var length = details.length; + if (!length) { + return source; + } + var lastIndex = length - 1; + details[lastIndex] = (length > 1 ? '& ' : '') + details[lastIndex]; + details = details.join(length > 2 ? ', ' : ' '); + return source.replace(reWrapComment, '{\n/* [wrapped with ' + details + '] */\n'); + } + + /** + * Checks if `value` is a flattenable `arguments` object or array. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is flattenable, else `false`. + */ + function isFlattenable(value) { + return isArray(value) || isArguments(value) || + !!(spreadableSymbol && value && value[spreadableSymbol]); + } + + /** + * Checks if `value` is a valid array-like index. + * + * @private + * @param {*} value The value to check. + * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index. + * @returns {boolean} Returns `true` if `value` is a valid index, else `false`. + */ + function isIndex(value, length) { + var type = typeof value; + length = length == null ? MAX_SAFE_INTEGER : length; + + return !!length && + (type == 'number' || + (type != 'symbol' && reIsUint.test(value))) && + (value > -1 && value % 1 == 0 && value < length); + } + + /** + * Checks if the given arguments are from an iteratee call. + * + * @private + * @param {*} value The potential iteratee value argument. + * @param {*} index The potential iteratee index or key argument. + * @param {*} object The potential iteratee object argument. + * @returns {boolean} Returns `true` if the arguments are from an iteratee call, + * else `false`. + */ + function isIterateeCall(value, index, object) { + if (!isObject(object)) { + return false; + } + var type = typeof index; + if (type == 'number' + ? (isArrayLike(object) && isIndex(index, object.length)) + : (type == 'string' && index in object) + ) { + return eq(object[index], value); + } + return false; + } + + /** + * Checks if `value` is a property name and not a property path. + * + * @private + * @param {*} value The value to check. + * @param {Object} [object] The object to query keys on. + * @returns {boolean} Returns `true` if `value` is a property name, else `false`. + */ + function isKey(value, object) { + if (isArray(value)) { + return false; + } + var type = typeof value; + if (type == 'number' || type == 'symbol' || type == 'boolean' || + value == null || isSymbol(value)) { + return true; + } + return reIsPlainProp.test(value) || !reIsDeepProp.test(value) || + (object != null && value in Object(object)); + } + + /** + * Checks if `value` is suitable for use as unique object key. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is suitable, else `false`. + */ + function isKeyable(value) { + var type = typeof value; + return (type == 'string' || type == 'number' || type == 'symbol' || type == 'boolean') + ? (value !== '__proto__') + : (value === null); + } + + /** + * Checks if `func` has a lazy counterpart. + * + * @private + * @param {Function} func The function to check. + * @returns {boolean} Returns `true` if `func` has a lazy counterpart, + * else `false`. + */ + function isLaziable(func) { + var funcName = getFuncName(func), + other = lodash[funcName]; + + if (typeof other != 'function' || !(funcName in LazyWrapper.prototype)) { + return false; + } + if (func === other) { + return true; + } + var data = getData(other); + return !!data && func === data[0]; + } + + /** + * Checks if `func` has its source masked. + * + * @private + * @param {Function} func The function to check. + * @returns {boolean} Returns `true` if `func` is masked, else `false`. + */ + function isMasked(func) { + return !!maskSrcKey && (maskSrcKey in func); + } + + /** + * Checks if `func` is capable of being masked. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `func` is maskable, else `false`. + */ + var isMaskable = coreJsData ? isFunction : stubFalse; + + /** + * Checks if `value` is likely a prototype object. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a prototype, else `false`. + */ + function isPrototype(value) { + var Ctor = value && value.constructor, + proto = (typeof Ctor == 'function' && Ctor.prototype) || objectProto; + + return value === proto; + } + + /** + * Checks if `value` is suitable for strict equality comparisons, i.e. `===`. + * + * @private + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` if suitable for strict + * equality comparisons, else `false`. + */ + function isStrictComparable(value) { + return value === value && !isObject(value); + } + + /** + * A specialized version of `matchesProperty` for source values suitable + * for strict equality comparisons, i.e. `===`. + * + * @private + * @param {string} key The key of the property to get. + * @param {*} srcValue The value to match. + * @returns {Function} Returns the new spec function. + */ + function matchesStrictComparable(key, srcValue) { + return function(object) { + if (object == null) { + return false; + } + return object[key] === srcValue && + (srcValue !== undefined || (key in Object(object))); + }; + } + + /** + * A specialized version of `_.memoize` which clears the memoized function's + * cache when it exceeds `MAX_MEMOIZE_SIZE`. + * + * @private + * @param {Function} func The function to have its output memoized. + * @returns {Function} Returns the new memoized function. + */ + function memoizeCapped(func) { + var result = memoize(func, function(key) { + if (cache.size === MAX_MEMOIZE_SIZE) { + cache.clear(); + } + return key; + }); + + var cache = result.cache; + return result; + } + + /** + * Merges the function metadata of `source` into `data`. + * + * Merging metadata reduces the number of wrappers used to invoke a function. + * This is possible because methods like `_.bind`, `_.curry`, and `_.partial` + * may be applied regardless of execution order. Methods like `_.ary` and + * `_.rearg` modify function arguments, making the order in which they are + * executed important, preventing the merging of metadata. However, we make + * an exception for a safe combined case where curried functions have `_.ary` + * and or `_.rearg` applied. + * + * @private + * @param {Array} data The destination metadata. + * @param {Array} source The source metadata. + * @returns {Array} Returns `data`. + */ + function mergeData(data, source) { + var bitmask = data[1], + srcBitmask = source[1], + newBitmask = bitmask | srcBitmask, + isCommon = newBitmask < (WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG | WRAP_ARY_FLAG); + + var isCombo = + ((srcBitmask == WRAP_ARY_FLAG) && (bitmask == WRAP_CURRY_FLAG)) || + ((srcBitmask == WRAP_ARY_FLAG) && (bitmask == WRAP_REARG_FLAG) && (data[7].length <= source[8])) || + ((srcBitmask == (WRAP_ARY_FLAG | WRAP_REARG_FLAG)) && (source[7].length <= source[8]) && (bitmask == WRAP_CURRY_FLAG)); + + // Exit early if metadata can't be merged. + if (!(isCommon || isCombo)) { + return data; + } + // Use source `thisArg` if available. + if (srcBitmask & WRAP_BIND_FLAG) { + data[2] = source[2]; + // Set when currying a bound function. + newBitmask |= bitmask & WRAP_BIND_FLAG ? 0 : WRAP_CURRY_BOUND_FLAG; + } + // Compose partial arguments. + var value = source[3]; + if (value) { + var partials = data[3]; + data[3] = partials ? composeArgs(partials, value, source[4]) : value; + data[4] = partials ? replaceHolders(data[3], PLACEHOLDER) : source[4]; + } + // Compose partial right arguments. + value = source[5]; + if (value) { + partials = data[5]; + data[5] = partials ? composeArgsRight(partials, value, source[6]) : value; + data[6] = partials ? replaceHolders(data[5], PLACEHOLDER) : source[6]; + } + // Use source `argPos` if available. + value = source[7]; + if (value) { + data[7] = value; + } + // Use source `ary` if it's smaller. + if (srcBitmask & WRAP_ARY_FLAG) { + data[8] = data[8] == null ? source[8] : nativeMin(data[8], source[8]); + } + // Use source `arity` if one is not provided. + if (data[9] == null) { + data[9] = source[9]; + } + // Use source `func` and merge bitmasks. + data[0] = source[0]; + data[1] = newBitmask; + + return data; + } + + /** + * This function is like + * [`Object.keys`](http://ecma-international.org/ecma-262/7.0/#sec-object.keys) + * except that it includes inherited enumerable properties. + * + * @private + * @param {Object} object The object to query. + * @returns {Array} Returns the array of property names. + */ + function nativeKeysIn(object) { + var result = []; + if (object != null) { + for (var key in Object(object)) { + result.push(key); + } + } + return result; + } + + /** + * Converts `value` to a string using `Object.prototype.toString`. + * + * @private + * @param {*} value The value to convert. + * @returns {string} Returns the converted string. + */ + function objectToString(value) { + return nativeObjectToString.call(value); + } + + /** + * A specialized version of `baseRest` which transforms the rest array. + * + * @private + * @param {Function} func The function to apply a rest parameter to. + * @param {number} [start=func.length-1] The start position of the rest parameter. + * @param {Function} transform The rest array transform. + * @returns {Function} Returns the new function. + */ + function overRest(func, start, transform) { + start = nativeMax(start === undefined ? (func.length - 1) : start, 0); + return function() { + var args = arguments, + index = -1, + length = nativeMax(args.length - start, 0), + array = Array(length); + + while (++index < length) { + array[index] = args[start + index]; + } + index = -1; + var otherArgs = Array(start + 1); + while (++index < start) { + otherArgs[index] = args[index]; + } + otherArgs[start] = transform(array); + return apply(func, this, otherArgs); + }; + } + + /** + * Gets the parent value at `path` of `object`. + * + * @private + * @param {Object} object The object to query. + * @param {Array} path The path to get the parent value of. + * @returns {*} Returns the parent value. + */ + function parent(object, path) { + return path.length < 2 ? object : baseGet(object, baseSlice(path, 0, -1)); + } + + /** + * Reorder `array` according to the specified indexes where the element at + * the first index is assigned as the first element, the element at + * the second index is assigned as the second element, and so on. + * + * @private + * @param {Array} array The array to reorder. + * @param {Array} indexes The arranged array indexes. + * @returns {Array} Returns `array`. + */ + function reorder(array, indexes) { + var arrLength = array.length, + length = nativeMin(indexes.length, arrLength), + oldArray = copyArray(array); + + while (length--) { + var index = indexes[length]; + array[length] = isIndex(index, arrLength) ? oldArray[index] : undefined; + } + return array; + } + + /** + * Gets the value at `key`, unless `key` is "__proto__" or "constructor". + * + * @private + * @param {Object} object The object to query. + * @param {string} key The key of the property to get. + * @returns {*} Returns the property value. + */ + function safeGet(object, key) { + if (key === 'constructor' && typeof object[key] === 'function') { + return; + } + + if (key == '__proto__') { + return; + } + + return object[key]; + } + + /** + * Sets metadata for `func`. + * + * **Note:** If this function becomes hot, i.e. is invoked a lot in a short + * period of time, it will trip its breaker and transition to an identity + * function to avoid garbage collection pauses in V8. See + * [V8 issue 2070](https://bugs.chromium.org/p/v8/issues/detail?id=2070) + * for more details. + * + * @private + * @param {Function} func The function to associate metadata with. + * @param {*} data The metadata. + * @returns {Function} Returns `func`. + */ + var setData = shortOut(baseSetData); + + /** + * A simple wrapper around the global [`setTimeout`](https://mdn.io/setTimeout). + * + * @private + * @param {Function} func The function to delay. + * @param {number} wait The number of milliseconds to delay invocation. + * @returns {number|Object} Returns the timer id or timeout object. + */ + var setTimeout = ctxSetTimeout || function(func, wait) { + return root.setTimeout(func, wait); + }; + + /** + * Sets the `toString` method of `func` to return `string`. + * + * @private + * @param {Function} func The function to modify. + * @param {Function} string The `toString` result. + * @returns {Function} Returns `func`. + */ + var setToString = shortOut(baseSetToString); + + /** + * Sets the `toString` method of `wrapper` to mimic the source of `reference` + * with wrapper details in a comment at the top of the source body. + * + * @private + * @param {Function} wrapper The function to modify. + * @param {Function} reference The reference function. + * @param {number} bitmask The bitmask flags. See `createWrap` for more details. + * @returns {Function} Returns `wrapper`. + */ + function setWrapToString(wrapper, reference, bitmask) { + var source = (reference + ''); + return setToString(wrapper, insertWrapDetails(source, updateWrapDetails(getWrapDetails(source), bitmask))); + } + + /** + * Creates a function that'll short out and invoke `identity` instead + * of `func` when it's called `HOT_COUNT` or more times in `HOT_SPAN` + * milliseconds. + * + * @private + * @param {Function} func The function to restrict. + * @returns {Function} Returns the new shortable function. + */ + function shortOut(func) { + var count = 0, + lastCalled = 0; + + return function() { + var stamp = nativeNow(), + remaining = HOT_SPAN - (stamp - lastCalled); + + lastCalled = stamp; + if (remaining > 0) { + if (++count >= HOT_COUNT) { + return arguments[0]; + } + } else { + count = 0; + } + return func.apply(undefined, arguments); + }; + } + + /** + * A specialized version of `_.shuffle` which mutates and sets the size of `array`. + * + * @private + * @param {Array} array The array to shuffle. + * @param {number} [size=array.length] The size of `array`. + * @returns {Array} Returns `array`. + */ + function shuffleSelf(array, size) { + var index = -1, + length = array.length, + lastIndex = length - 1; + + size = size === undefined ? length : size; + while (++index < size) { + var rand = baseRandom(index, lastIndex), + value = array[rand]; + + array[rand] = array[index]; + array[index] = value; + } + array.length = size; + return array; + } + + /** + * Converts `string` to a property path array. + * + * @private + * @param {string} string The string to convert. + * @returns {Array} Returns the property path array. + */ + var stringToPath = memoizeCapped(function(string) { + var result = []; + if (string.charCodeAt(0) === 46 /* . */) { + result.push(''); + } + string.replace(rePropName, function(match, number, quote, subString) { + result.push(quote ? subString.replace(reEscapeChar, '$1') : (number || match)); + }); + return result; + }); + + /** + * Converts `value` to a string key if it's not a string or symbol. + * + * @private + * @param {*} value The value to inspect. + * @returns {string|symbol} Returns the key. + */ + function toKey(value) { + if (typeof value == 'string' || isSymbol(value)) { + return value; + } + var result = (value + ''); + return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result; + } + + /** + * Converts `func` to its source code. + * + * @private + * @param {Function} func The function to convert. + * @returns {string} Returns the source code. + */ + function toSource(func) { + if (func != null) { + try { + return funcToString.call(func); + } catch (e) {} + try { + return (func + ''); + } catch (e) {} + } + return ''; + } + + /** + * Updates wrapper `details` based on `bitmask` flags. + * + * @private + * @returns {Array} details The details to modify. + * @param {number} bitmask The bitmask flags. See `createWrap` for more details. + * @returns {Array} Returns `details`. + */ + function updateWrapDetails(details, bitmask) { + arrayEach(wrapFlags, function(pair) { + var value = '_.' + pair[0]; + if ((bitmask & pair[1]) && !arrayIncludes(details, value)) { + details.push(value); + } + }); + return details.sort(); + } + + /** + * Creates a clone of `wrapper`. + * + * @private + * @param {Object} wrapper The wrapper to clone. + * @returns {Object} Returns the cloned wrapper. + */ + function wrapperClone(wrapper) { + if (wrapper instanceof LazyWrapper) { + return wrapper.clone(); + } + var result = new LodashWrapper(wrapper.__wrapped__, wrapper.__chain__); + result.__actions__ = copyArray(wrapper.__actions__); + result.__index__ = wrapper.__index__; + result.__values__ = wrapper.__values__; + return result; + } + + /*------------------------------------------------------------------------*/ + + /** + * Creates an array of elements split into groups the length of `size`. + * If `array` can't be split evenly, the final chunk will be the remaining + * elements. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Array + * @param {Array} array The array to process. + * @param {number} [size=1] The length of each chunk + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {Array} Returns the new array of chunks. + * @example + * + * _.chunk(['a', 'b', 'c', 'd'], 2); + * // => [['a', 'b'], ['c', 'd']] + * + * _.chunk(['a', 'b', 'c', 'd'], 3); + * // => [['a', 'b', 'c'], ['d']] + */ + function chunk(array, size, guard) { + if ((guard ? isIterateeCall(array, size, guard) : size === undefined)) { + size = 1; + } else { + size = nativeMax(toInteger(size), 0); + } + var length = array == null ? 0 : array.length; + if (!length || size < 1) { + return []; + } + var index = 0, + resIndex = 0, + result = Array(nativeCeil(length / size)); + + while (index < length) { + result[resIndex++] = baseSlice(array, index, (index += size)); + } + return result; + } + + /** + * Creates an array with all falsey values removed. The values `false`, `null`, + * `0`, `""`, `undefined`, and `NaN` are falsey. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {Array} array The array to compact. + * @returns {Array} Returns the new array of filtered values. + * @example + * + * _.compact([0, 1, false, 2, '', 3]); + * // => [1, 2, 3] + */ + function compact(array) { + var index = -1, + length = array == null ? 0 : array.length, + resIndex = 0, + result = []; + + while (++index < length) { + var value = array[index]; + if (value) { + result[resIndex++] = value; + } + } + return result; + } + + /** + * Creates a new array concatenating `array` with any additional arrays + * and/or values. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to concatenate. + * @param {...*} [values] The values to concatenate. + * @returns {Array} Returns the new concatenated array. + * @example + * + * var array = [1]; + * var other = _.concat(array, 2, [3], [[4]]); + * + * console.log(other); + * // => [1, 2, 3, [4]] + * + * console.log(array); + * // => [1] + */ + function concat() { + var length = arguments.length; + if (!length) { + return []; + } + var args = Array(length - 1), + array = arguments[0], + index = length; + + while (index--) { + args[index - 1] = arguments[index]; + } + return arrayPush(isArray(array) ? copyArray(array) : [array], baseFlatten(args, 1)); + } + + /** + * Creates an array of `array` values not included in the other given arrays + * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero) + * for equality comparisons. The order and references of result values are + * determined by the first array. + * + * **Note:** Unlike `_.pullAll`, this method returns a new array. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {...Array} [values] The values to exclude. + * @returns {Array} Returns the new array of filtered values. + * @see _.without, _.xor + * @example + * + * _.difference([2, 1], [2, 3]); + * // => [1] + */ + var difference = baseRest(function(array, values) { + return isArrayLikeObject(array) + ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true)) + : []; + }); + + /** + * This method is like `_.difference` except that it accepts `iteratee` which + * is invoked for each element of `array` and `values` to generate the criterion + * by which they're compared. The order and references of result values are + * determined by the first array. The iteratee is invoked with one argument: + * (value). + * + * **Note:** Unlike `_.pullAllBy`, this method returns a new array. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {...Array} [values] The values to exclude. + * @param {Function} [iteratee=_.identity] The iteratee invoked per element. + * @returns {Array} Returns the new array of filtered values. + * @example + * + * _.differenceBy([2.1, 1.2], [2.3, 3.4], Math.floor); + * // => [1.2] + * + * // The `_.property` iteratee shorthand. + * _.differenceBy([{ 'x': 2 }, { 'x': 1 }], [{ 'x': 1 }], 'x'); + * // => [{ 'x': 2 }] + */ + var differenceBy = baseRest(function(array, values) { + var iteratee = last(values); + if (isArrayLikeObject(iteratee)) { + iteratee = undefined; + } + return isArrayLikeObject(array) + ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), getIteratee(iteratee, 2)) + : []; + }); + + /** + * This method is like `_.difference` except that it accepts `comparator` + * which is invoked to compare elements of `array` to `values`. The order and + * references of result values are determined by the first array. The comparator + * is invoked with two arguments: (arrVal, othVal). + * + * **Note:** Unlike `_.pullAllWith`, this method returns a new array. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {...Array} [values] The values to exclude. + * @param {Function} [comparator] The comparator invoked per element. + * @returns {Array} Returns the new array of filtered values. + * @example + * + * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]; + * + * _.differenceWith(objects, [{ 'x': 1, 'y': 2 }], _.isEqual); + * // => [{ 'x': 2, 'y': 1 }] + */ + var differenceWith = baseRest(function(array, values) { + var comparator = last(values); + if (isArrayLikeObject(comparator)) { + comparator = undefined; + } + return isArrayLikeObject(array) + ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), undefined, comparator) + : []; + }); + + /** + * Creates a slice of `array` with `n` elements dropped from the beginning. + * + * @static + * @memberOf _ + * @since 0.5.0 + * @category Array + * @param {Array} array The array to query. + * @param {number} [n=1] The number of elements to drop. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {Array} Returns the slice of `array`. + * @example + * + * _.drop([1, 2, 3]); + * // => [2, 3] + * + * _.drop([1, 2, 3], 2); + * // => [3] + * + * _.drop([1, 2, 3], 5); + * // => [] + * + * _.drop([1, 2, 3], 0); + * // => [1, 2, 3] + */ + function drop(array, n, guard) { + var length = array == null ? 0 : array.length; + if (!length) { + return []; + } + n = (guard || n === undefined) ? 1 : toInteger(n); + return baseSlice(array, n < 0 ? 0 : n, length); + } + + /** + * Creates a slice of `array` with `n` elements dropped from the end. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Array + * @param {Array} array The array to query. + * @param {number} [n=1] The number of elements to drop. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {Array} Returns the slice of `array`. + * @example + * + * _.dropRight([1, 2, 3]); + * // => [1, 2] + * + * _.dropRight([1, 2, 3], 2); + * // => [1] + * + * _.dropRight([1, 2, 3], 5); + * // => [] + * + * _.dropRight([1, 2, 3], 0); + * // => [1, 2, 3] + */ + function dropRight(array, n, guard) { + var length = array == null ? 0 : array.length; + if (!length) { + return []; + } + n = (guard || n === undefined) ? 1 : toInteger(n); + n = length - n; + return baseSlice(array, 0, n < 0 ? 0 : n); + } + + /** + * Creates a slice of `array` excluding elements dropped from the end. + * Elements are dropped until `predicate` returns falsey. The predicate is + * invoked with three arguments: (value, index, array). + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Array + * @param {Array} array The array to query. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @returns {Array} Returns the slice of `array`. + * @example + * + * var users = [ + * { 'user': 'barney', 'active': true }, + * { 'user': 'fred', 'active': false }, + * { 'user': 'pebbles', 'active': false } + * ]; + * + * _.dropRightWhile(users, function(o) { return !o.active; }); + * // => objects for ['barney'] + * + * // The `_.matches` iteratee shorthand. + * _.dropRightWhile(users, { 'user': 'pebbles', 'active': false }); + * // => objects for ['barney', 'fred'] + * + * // The `_.matchesProperty` iteratee shorthand. + * _.dropRightWhile(users, ['active', false]); + * // => objects for ['barney'] + * + * // The `_.property` iteratee shorthand. + * _.dropRightWhile(users, 'active'); + * // => objects for ['barney', 'fred', 'pebbles'] + */ + function dropRightWhile(array, predicate) { + return (array && array.length) + ? baseWhile(array, getIteratee(predicate, 3), true, true) + : []; + } + + /** + * Creates a slice of `array` excluding elements dropped from the beginning. + * Elements are dropped until `predicate` returns falsey. The predicate is + * invoked with three arguments: (value, index, array). + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Array + * @param {Array} array The array to query. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @returns {Array} Returns the slice of `array`. + * @example + * + * var users = [ + * { 'user': 'barney', 'active': false }, + * { 'user': 'fred', 'active': false }, + * { 'user': 'pebbles', 'active': true } + * ]; + * + * _.dropWhile(users, function(o) { return !o.active; }); + * // => objects for ['pebbles'] + * + * // The `_.matches` iteratee shorthand. + * _.dropWhile(users, { 'user': 'barney', 'active': false }); + * // => objects for ['fred', 'pebbles'] + * + * // The `_.matchesProperty` iteratee shorthand. + * _.dropWhile(users, ['active', false]); + * // => objects for ['pebbles'] + * + * // The `_.property` iteratee shorthand. + * _.dropWhile(users, 'active'); + * // => objects for ['barney', 'fred', 'pebbles'] + */ + function dropWhile(array, predicate) { + return (array && array.length) + ? baseWhile(array, getIteratee(predicate, 3), true) + : []; + } + + /** + * Fills elements of `array` with `value` from `start` up to, but not + * including, `end`. + * + * **Note:** This method mutates `array`. + * + * @static + * @memberOf _ + * @since 3.2.0 + * @category Array + * @param {Array} array The array to fill. + * @param {*} value The value to fill `array` with. + * @param {number} [start=0] The start position. + * @param {number} [end=array.length] The end position. + * @returns {Array} Returns `array`. + * @example + * + * var array = [1, 2, 3]; + * + * _.fill(array, 'a'); + * console.log(array); + * // => ['a', 'a', 'a'] + * + * _.fill(Array(3), 2); + * // => [2, 2, 2] + * + * _.fill([4, 6, 8, 10], '*', 1, 3); + * // => [4, '*', '*', 10] + */ + function fill(array, value, start, end) { + var length = array == null ? 0 : array.length; + if (!length) { + return []; + } + if (start && typeof start != 'number' && isIterateeCall(array, value, start)) { + start = 0; + end = length; + } + return baseFill(array, value, start, end); + } + + /** + * This method is like `_.find` except that it returns the index of the first + * element `predicate` returns truthy for instead of the element itself. + * + * @static + * @memberOf _ + * @since 1.1.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @param {number} [fromIndex=0] The index to search from. + * @returns {number} Returns the index of the found element, else `-1`. + * @example + * + * var users = [ + * { 'user': 'barney', 'active': false }, + * { 'user': 'fred', 'active': false }, + * { 'user': 'pebbles', 'active': true } + * ]; + * + * _.findIndex(users, function(o) { return o.user == 'barney'; }); + * // => 0 + * + * // The `_.matches` iteratee shorthand. + * _.findIndex(users, { 'user': 'fred', 'active': false }); + * // => 1 + * + * // The `_.matchesProperty` iteratee shorthand. + * _.findIndex(users, ['active', false]); + * // => 0 + * + * // The `_.property` iteratee shorthand. + * _.findIndex(users, 'active'); + * // => 2 + */ + function findIndex(array, predicate, fromIndex) { + var length = array == null ? 0 : array.length; + if (!length) { + return -1; + } + var index = fromIndex == null ? 0 : toInteger(fromIndex); + if (index < 0) { + index = nativeMax(length + index, 0); + } + return baseFindIndex(array, getIteratee(predicate, 3), index); + } + + /** + * This method is like `_.findIndex` except that it iterates over elements + * of `collection` from right to left. + * + * @static + * @memberOf _ + * @since 2.0.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @param {number} [fromIndex=array.length-1] The index to search from. + * @returns {number} Returns the index of the found element, else `-1`. + * @example + * + * var users = [ + * { 'user': 'barney', 'active': true }, + * { 'user': 'fred', 'active': false }, + * { 'user': 'pebbles', 'active': false } + * ]; + * + * _.findLastIndex(users, function(o) { return o.user == 'pebbles'; }); + * // => 2 + * + * // The `_.matches` iteratee shorthand. + * _.findLastIndex(users, { 'user': 'barney', 'active': true }); + * // => 0 + * + * // The `_.matchesProperty` iteratee shorthand. + * _.findLastIndex(users, ['active', false]); + * // => 2 + * + * // The `_.property` iteratee shorthand. + * _.findLastIndex(users, 'active'); + * // => 0 + */ + function findLastIndex(array, predicate, fromIndex) { + var length = array == null ? 0 : array.length; + if (!length) { + return -1; + } + var index = length - 1; + if (fromIndex !== undefined) { + index = toInteger(fromIndex); + index = fromIndex < 0 + ? nativeMax(length + index, 0) + : nativeMin(index, length - 1); + } + return baseFindIndex(array, getIteratee(predicate, 3), index, true); + } + + /** + * Flattens `array` a single level deep. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {Array} array The array to flatten. + * @returns {Array} Returns the new flattened array. + * @example + * + * _.flatten([1, [2, [3, [4]], 5]]); + * // => [1, 2, [3, [4]], 5] + */ + function flatten(array) { + var length = array == null ? 0 : array.length; + return length ? baseFlatten(array, 1) : []; + } + + /** + * Recursively flattens `array`. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Array + * @param {Array} array The array to flatten. + * @returns {Array} Returns the new flattened array. + * @example + * + * _.flattenDeep([1, [2, [3, [4]], 5]]); + * // => [1, 2, 3, 4, 5] + */ + function flattenDeep(array) { + var length = array == null ? 0 : array.length; + return length ? baseFlatten(array, INFINITY) : []; + } + + /** + * Recursively flatten `array` up to `depth` times. + * + * @static + * @memberOf _ + * @since 4.4.0 + * @category Array + * @param {Array} array The array to flatten. + * @param {number} [depth=1] The maximum recursion depth. + * @returns {Array} Returns the new flattened array. + * @example + * + * var array = [1, [2, [3, [4]], 5]]; + * + * _.flattenDepth(array, 1); + * // => [1, 2, [3, [4]], 5] + * + * _.flattenDepth(array, 2); + * // => [1, 2, 3, [4], 5] + */ + function flattenDepth(array, depth) { + var length = array == null ? 0 : array.length; + if (!length) { + return []; + } + depth = depth === undefined ? 1 : toInteger(depth); + return baseFlatten(array, depth); + } + + /** + * The inverse of `_.toPairs`; this method returns an object composed + * from key-value `pairs`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} pairs The key-value pairs. + * @returns {Object} Returns the new object. + * @example + * + * _.fromPairs([['a', 1], ['b', 2]]); + * // => { 'a': 1, 'b': 2 } + */ + function fromPairs(pairs) { + var index = -1, + length = pairs == null ? 0 : pairs.length, + result = {}; + + while (++index < length) { + var pair = pairs[index]; + result[pair[0]] = pair[1]; + } + return result; + } + + /** + * Gets the first element of `array`. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @alias first + * @category Array + * @param {Array} array The array to query. + * @returns {*} Returns the first element of `array`. + * @example + * + * _.head([1, 2, 3]); + * // => 1 + * + * _.head([]); + * // => undefined + */ + function head(array) { + return (array && array.length) ? array[0] : undefined; + } + + /** + * Gets the index at which the first occurrence of `value` is found in `array` + * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero) + * for equality comparisons. If `fromIndex` is negative, it's used as the + * offset from the end of `array`. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {*} value The value to search for. + * @param {number} [fromIndex=0] The index to search from. + * @returns {number} Returns the index of the matched value, else `-1`. + * @example + * + * _.indexOf([1, 2, 1, 2], 2); + * // => 1 + * + * // Search from the `fromIndex`. + * _.indexOf([1, 2, 1, 2], 2, 2); + * // => 3 + */ + function indexOf(array, value, fromIndex) { + var length = array == null ? 0 : array.length; + if (!length) { + return -1; + } + var index = fromIndex == null ? 0 : toInteger(fromIndex); + if (index < 0) { + index = nativeMax(length + index, 0); + } + return baseIndexOf(array, value, index); + } + + /** + * Gets all but the last element of `array`. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {Array} array The array to query. + * @returns {Array} Returns the slice of `array`. + * @example + * + * _.initial([1, 2, 3]); + * // => [1, 2] + */ + function initial(array) { + var length = array == null ? 0 : array.length; + return length ? baseSlice(array, 0, -1) : []; + } + + /** + * Creates an array of unique values that are included in all given arrays + * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero) + * for equality comparisons. The order and references of result values are + * determined by the first array. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {...Array} [arrays] The arrays to inspect. + * @returns {Array} Returns the new array of intersecting values. + * @example + * + * _.intersection([2, 1], [2, 3]); + * // => [2] + */ + var intersection = baseRest(function(arrays) { + var mapped = arrayMap(arrays, castArrayLikeObject); + return (mapped.length && mapped[0] === arrays[0]) + ? baseIntersection(mapped) + : []; + }); + + /** + * This method is like `_.intersection` except that it accepts `iteratee` + * which is invoked for each element of each `arrays` to generate the criterion + * by which they're compared. The order and references of result values are + * determined by the first array. The iteratee is invoked with one argument: + * (value). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {...Array} [arrays] The arrays to inspect. + * @param {Function} [iteratee=_.identity] The iteratee invoked per element. + * @returns {Array} Returns the new array of intersecting values. + * @example + * + * _.intersectionBy([2.1, 1.2], [2.3, 3.4], Math.floor); + * // => [2.1] + * + * // The `_.property` iteratee shorthand. + * _.intersectionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x'); + * // => [{ 'x': 1 }] + */ + var intersectionBy = baseRest(function(arrays) { + var iteratee = last(arrays), + mapped = arrayMap(arrays, castArrayLikeObject); + + if (iteratee === last(mapped)) { + iteratee = undefined; + } else { + mapped.pop(); + } + return (mapped.length && mapped[0] === arrays[0]) + ? baseIntersection(mapped, getIteratee(iteratee, 2)) + : []; + }); + + /** + * This method is like `_.intersection` except that it accepts `comparator` + * which is invoked to compare elements of `arrays`. The order and references + * of result values are determined by the first array. The comparator is + * invoked with two arguments: (arrVal, othVal). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {...Array} [arrays] The arrays to inspect. + * @param {Function} [comparator] The comparator invoked per element. + * @returns {Array} Returns the new array of intersecting values. + * @example + * + * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]; + * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }]; + * + * _.intersectionWith(objects, others, _.isEqual); + * // => [{ 'x': 1, 'y': 2 }] + */ + var intersectionWith = baseRest(function(arrays) { + var comparator = last(arrays), + mapped = arrayMap(arrays, castArrayLikeObject); + + comparator = typeof comparator == 'function' ? comparator : undefined; + if (comparator) { + mapped.pop(); + } + return (mapped.length && mapped[0] === arrays[0]) + ? baseIntersection(mapped, undefined, comparator) + : []; + }); + + /** + * Converts all elements in `array` into a string separated by `separator`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to convert. + * @param {string} [separator=','] The element separator. + * @returns {string} Returns the joined string. + * @example + * + * _.join(['a', 'b', 'c'], '~'); + * // => 'a~b~c' + */ + function join(array, separator) { + return array == null ? '' : nativeJoin.call(array, separator); + } + + /** + * Gets the last element of `array`. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {Array} array The array to query. + * @returns {*} Returns the last element of `array`. + * @example + * + * _.last([1, 2, 3]); + * // => 3 + */ + function last(array) { + var length = array == null ? 0 : array.length; + return length ? array[length - 1] : undefined; + } + + /** + * This method is like `_.indexOf` except that it iterates over elements of + * `array` from right to left. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {*} value The value to search for. + * @param {number} [fromIndex=array.length-1] The index to search from. + * @returns {number} Returns the index of the matched value, else `-1`. + * @example + * + * _.lastIndexOf([1, 2, 1, 2], 2); + * // => 3 + * + * // Search from the `fromIndex`. + * _.lastIndexOf([1, 2, 1, 2], 2, 2); + * // => 1 + */ + function lastIndexOf(array, value, fromIndex) { + var length = array == null ? 0 : array.length; + if (!length) { + return -1; + } + var index = length; + if (fromIndex !== undefined) { + index = toInteger(fromIndex); + index = index < 0 ? nativeMax(length + index, 0) : nativeMin(index, length - 1); + } + return value === value + ? strictLastIndexOf(array, value, index) + : baseFindIndex(array, baseIsNaN, index, true); + } + + /** + * Gets the element at index `n` of `array`. If `n` is negative, the nth + * element from the end is returned. + * + * @static + * @memberOf _ + * @since 4.11.0 + * @category Array + * @param {Array} array The array to query. + * @param {number} [n=0] The index of the element to return. + * @returns {*} Returns the nth element of `array`. + * @example + * + * var array = ['a', 'b', 'c', 'd']; + * + * _.nth(array, 1); + * // => 'b' + * + * _.nth(array, -2); + * // => 'c'; + */ + function nth(array, n) { + return (array && array.length) ? baseNth(array, toInteger(n)) : undefined; + } + + /** + * Removes all given values from `array` using + * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero) + * for equality comparisons. + * + * **Note:** Unlike `_.without`, this method mutates `array`. Use `_.remove` + * to remove elements from an array by predicate. + * + * @static + * @memberOf _ + * @since 2.0.0 + * @category Array + * @param {Array} array The array to modify. + * @param {...*} [values] The values to remove. + * @returns {Array} Returns `array`. + * @example + * + * var array = ['a', 'b', 'c', 'a', 'b', 'c']; + * + * _.pull(array, 'a', 'c'); + * console.log(array); + * // => ['b', 'b'] + */ + var pull = baseRest(pullAll); + + /** + * This method is like `_.pull` except that it accepts an array of values to remove. + * + * **Note:** Unlike `_.difference`, this method mutates `array`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to modify. + * @param {Array} values The values to remove. + * @returns {Array} Returns `array`. + * @example + * + * var array = ['a', 'b', 'c', 'a', 'b', 'c']; + * + * _.pullAll(array, ['a', 'c']); + * console.log(array); + * // => ['b', 'b'] + */ + function pullAll(array, values) { + return (array && array.length && values && values.length) + ? basePullAll(array, values) + : array; + } + + /** + * This method is like `_.pullAll` except that it accepts `iteratee` which is + * invoked for each element of `array` and `values` to generate the criterion + * by which they're compared. The iteratee is invoked with one argument: (value). + * + * **Note:** Unlike `_.differenceBy`, this method mutates `array`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to modify. + * @param {Array} values The values to remove. + * @param {Function} [iteratee=_.identity] The iteratee invoked per element. + * @returns {Array} Returns `array`. + * @example + * + * var array = [{ 'x': 1 }, { 'x': 2 }, { 'x': 3 }, { 'x': 1 }]; + * + * _.pullAllBy(array, [{ 'x': 1 }, { 'x': 3 }], 'x'); + * console.log(array); + * // => [{ 'x': 2 }] + */ + function pullAllBy(array, values, iteratee) { + return (array && array.length && values && values.length) + ? basePullAll(array, values, getIteratee(iteratee, 2)) + : array; + } + + /** + * This method is like `_.pullAll` except that it accepts `comparator` which + * is invoked to compare elements of `array` to `values`. The comparator is + * invoked with two arguments: (arrVal, othVal). + * + * **Note:** Unlike `_.differenceWith`, this method mutates `array`. + * + * @static + * @memberOf _ + * @since 4.6.0 + * @category Array + * @param {Array} array The array to modify. + * @param {Array} values The values to remove. + * @param {Function} [comparator] The comparator invoked per element. + * @returns {Array} Returns `array`. + * @example + * + * var array = [{ 'x': 1, 'y': 2 }, { 'x': 3, 'y': 4 }, { 'x': 5, 'y': 6 }]; + * + * _.pullAllWith(array, [{ 'x': 3, 'y': 4 }], _.isEqual); + * console.log(array); + * // => [{ 'x': 1, 'y': 2 }, { 'x': 5, 'y': 6 }] + */ + function pullAllWith(array, values, comparator) { + return (array && array.length && values && values.length) + ? basePullAll(array, values, undefined, comparator) + : array; + } + + /** + * Removes elements from `array` corresponding to `indexes` and returns an + * array of removed elements. + * + * **Note:** Unlike `_.at`, this method mutates `array`. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Array + * @param {Array} array The array to modify. + * @param {...(number|number[])} [indexes] The indexes of elements to remove. + * @returns {Array} Returns the new array of removed elements. + * @example + * + * var array = ['a', 'b', 'c', 'd']; + * var pulled = _.pullAt(array, [1, 3]); + * + * console.log(array); + * // => ['a', 'c'] + * + * console.log(pulled); + * // => ['b', 'd'] + */ + var pullAt = flatRest(function(array, indexes) { + var length = array == null ? 0 : array.length, + result = baseAt(array, indexes); + + basePullAt(array, arrayMap(indexes, function(index) { + return isIndex(index, length) ? +index : index; + }).sort(compareAscending)); + + return result; + }); + + /** + * Removes all elements from `array` that `predicate` returns truthy for + * and returns an array of the removed elements. The predicate is invoked + * with three arguments: (value, index, array). + * + * **Note:** Unlike `_.filter`, this method mutates `array`. Use `_.pull` + * to pull elements from an array by value. + * + * @static + * @memberOf _ + * @since 2.0.0 + * @category Array + * @param {Array} array The array to modify. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @returns {Array} Returns the new array of removed elements. + * @example + * + * var array = [1, 2, 3, 4]; + * var evens = _.remove(array, function(n) { + * return n % 2 == 0; + * }); + * + * console.log(array); + * // => [1, 3] + * + * console.log(evens); + * // => [2, 4] + */ + function remove(array, predicate) { + var result = []; + if (!(array && array.length)) { + return result; + } + var index = -1, + indexes = [], + length = array.length; + + predicate = getIteratee(predicate, 3); + while (++index < length) { + var value = array[index]; + if (predicate(value, index, array)) { + result.push(value); + indexes.push(index); + } + } + basePullAt(array, indexes); + return result; + } + + /** + * Reverses `array` so that the first element becomes the last, the second + * element becomes the second to last, and so on. + * + * **Note:** This method mutates `array` and is based on + * [`Array#reverse`](https://mdn.io/Array/reverse). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to modify. + * @returns {Array} Returns `array`. + * @example + * + * var array = [1, 2, 3]; + * + * _.reverse(array); + * // => [3, 2, 1] + * + * console.log(array); + * // => [3, 2, 1] + */ + function reverse(array) { + return array == null ? array : nativeReverse.call(array); + } + + /** + * Creates a slice of `array` from `start` up to, but not including, `end`. + * + * **Note:** This method is used instead of + * [`Array#slice`](https://mdn.io/Array/slice) to ensure dense arrays are + * returned. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Array + * @param {Array} array The array to slice. + * @param {number} [start=0] The start position. + * @param {number} [end=array.length] The end position. + * @returns {Array} Returns the slice of `array`. + */ + function slice(array, start, end) { + var length = array == null ? 0 : array.length; + if (!length) { + return []; + } + if (end && typeof end != 'number' && isIterateeCall(array, start, end)) { + start = 0; + end = length; + } + else { + start = start == null ? 0 : toInteger(start); + end = end === undefined ? length : toInteger(end); + } + return baseSlice(array, start, end); + } + + /** + * Uses a binary search to determine the lowest index at which `value` + * should be inserted into `array` in order to maintain its sort order. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {Array} array The sorted array to inspect. + * @param {*} value The value to evaluate. + * @returns {number} Returns the index at which `value` should be inserted + * into `array`. + * @example + * + * _.sortedIndex([30, 50], 40); + * // => 1 + */ + function sortedIndex(array, value) { + return baseSortedIndex(array, value); + } + + /** + * This method is like `_.sortedIndex` except that it accepts `iteratee` + * which is invoked for `value` and each element of `array` to compute their + * sort ranking. The iteratee is invoked with one argument: (value). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The sorted array to inspect. + * @param {*} value The value to evaluate. + * @param {Function} [iteratee=_.identity] The iteratee invoked per element. + * @returns {number} Returns the index at which `value` should be inserted + * into `array`. + * @example + * + * var objects = [{ 'x': 4 }, { 'x': 5 }]; + * + * _.sortedIndexBy(objects, { 'x': 4 }, function(o) { return o.x; }); + * // => 0 + * + * // The `_.property` iteratee shorthand. + * _.sortedIndexBy(objects, { 'x': 4 }, 'x'); + * // => 0 + */ + function sortedIndexBy(array, value, iteratee) { + return baseSortedIndexBy(array, value, getIteratee(iteratee, 2)); + } + + /** + * This method is like `_.indexOf` except that it performs a binary + * search on a sorted `array`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {*} value The value to search for. + * @returns {number} Returns the index of the matched value, else `-1`. + * @example + * + * _.sortedIndexOf([4, 5, 5, 5, 6], 5); + * // => 1 + */ + function sortedIndexOf(array, value) { + var length = array == null ? 0 : array.length; + if (length) { + var index = baseSortedIndex(array, value); + if (index < length && eq(array[index], value)) { + return index; + } + } + return -1; + } + + /** + * This method is like `_.sortedIndex` except that it returns the highest + * index at which `value` should be inserted into `array` in order to + * maintain its sort order. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Array + * @param {Array} array The sorted array to inspect. + * @param {*} value The value to evaluate. + * @returns {number} Returns the index at which `value` should be inserted + * into `array`. + * @example + * + * _.sortedLastIndex([4, 5, 5, 5, 6], 5); + * // => 4 + */ + function sortedLastIndex(array, value) { + return baseSortedIndex(array, value, true); + } + + /** + * This method is like `_.sortedLastIndex` except that it accepts `iteratee` + * which is invoked for `value` and each element of `array` to compute their + * sort ranking. The iteratee is invoked with one argument: (value). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The sorted array to inspect. + * @param {*} value The value to evaluate. + * @param {Function} [iteratee=_.identity] The iteratee invoked per element. + * @returns {number} Returns the index at which `value` should be inserted + * into `array`. + * @example + * + * var objects = [{ 'x': 4 }, { 'x': 5 }]; + * + * _.sortedLastIndexBy(objects, { 'x': 4 }, function(o) { return o.x; }); + * // => 1 + * + * // The `_.property` iteratee shorthand. + * _.sortedLastIndexBy(objects, { 'x': 4 }, 'x'); + * // => 1 + */ + function sortedLastIndexBy(array, value, iteratee) { + return baseSortedIndexBy(array, value, getIteratee(iteratee, 2), true); + } + + /** + * This method is like `_.lastIndexOf` except that it performs a binary + * search on a sorted `array`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {*} value The value to search for. + * @returns {number} Returns the index of the matched value, else `-1`. + * @example + * + * _.sortedLastIndexOf([4, 5, 5, 5, 6], 5); + * // => 3 + */ + function sortedLastIndexOf(array, value) { + var length = array == null ? 0 : array.length; + if (length) { + var index = baseSortedIndex(array, value, true) - 1; + if (eq(array[index], value)) { + return index; + } + } + return -1; + } + + /** + * This method is like `_.uniq` except that it's designed and optimized + * for sorted arrays. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to inspect. + * @returns {Array} Returns the new duplicate free array. + * @example + * + * _.sortedUniq([1, 1, 2]); + * // => [1, 2] + */ + function sortedUniq(array) { + return (array && array.length) + ? baseSortedUniq(array) + : []; + } + + /** + * This method is like `_.uniqBy` except that it's designed and optimized + * for sorted arrays. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {Function} [iteratee] The iteratee invoked per element. + * @returns {Array} Returns the new duplicate free array. + * @example + * + * _.sortedUniqBy([1.1, 1.2, 2.3, 2.4], Math.floor); + * // => [1.1, 2.3] + */ + function sortedUniqBy(array, iteratee) { + return (array && array.length) + ? baseSortedUniq(array, getIteratee(iteratee, 2)) + : []; + } + + /** + * Gets all but the first element of `array`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to query. + * @returns {Array} Returns the slice of `array`. + * @example + * + * _.tail([1, 2, 3]); + * // => [2, 3] + */ + function tail(array) { + var length = array == null ? 0 : array.length; + return length ? baseSlice(array, 1, length) : []; + } + + /** + * Creates a slice of `array` with `n` elements taken from the beginning. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {Array} array The array to query. + * @param {number} [n=1] The number of elements to take. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {Array} Returns the slice of `array`. + * @example + * + * _.take([1, 2, 3]); + * // => [1] + * + * _.take([1, 2, 3], 2); + * // => [1, 2] + * + * _.take([1, 2, 3], 5); + * // => [1, 2, 3] + * + * _.take([1, 2, 3], 0); + * // => [] + */ + function take(array, n, guard) { + if (!(array && array.length)) { + return []; + } + n = (guard || n === undefined) ? 1 : toInteger(n); + return baseSlice(array, 0, n < 0 ? 0 : n); + } + + /** + * Creates a slice of `array` with `n` elements taken from the end. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Array + * @param {Array} array The array to query. + * @param {number} [n=1] The number of elements to take. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {Array} Returns the slice of `array`. + * @example + * + * _.takeRight([1, 2, 3]); + * // => [3] + * + * _.takeRight([1, 2, 3], 2); + * // => [2, 3] + * + * _.takeRight([1, 2, 3], 5); + * // => [1, 2, 3] + * + * _.takeRight([1, 2, 3], 0); + * // => [] + */ + function takeRight(array, n, guard) { + var length = array == null ? 0 : array.length; + if (!length) { + return []; + } + n = (guard || n === undefined) ? 1 : toInteger(n); + n = length - n; + return baseSlice(array, n < 0 ? 0 : n, length); + } + + /** + * Creates a slice of `array` with elements taken from the end. Elements are + * taken until `predicate` returns falsey. The predicate is invoked with + * three arguments: (value, index, array). + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Array + * @param {Array} array The array to query. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @returns {Array} Returns the slice of `array`. + * @example + * + * var users = [ + * { 'user': 'barney', 'active': true }, + * { 'user': 'fred', 'active': false }, + * { 'user': 'pebbles', 'active': false } + * ]; + * + * _.takeRightWhile(users, function(o) { return !o.active; }); + * // => objects for ['fred', 'pebbles'] + * + * // The `_.matches` iteratee shorthand. + * _.takeRightWhile(users, { 'user': 'pebbles', 'active': false }); + * // => objects for ['pebbles'] + * + * // The `_.matchesProperty` iteratee shorthand. + * _.takeRightWhile(users, ['active', false]); + * // => objects for ['fred', 'pebbles'] + * + * // The `_.property` iteratee shorthand. + * _.takeRightWhile(users, 'active'); + * // => [] + */ + function takeRightWhile(array, predicate) { + return (array && array.length) + ? baseWhile(array, getIteratee(predicate, 3), false, true) + : []; + } + + /** + * Creates a slice of `array` with elements taken from the beginning. Elements + * are taken until `predicate` returns falsey. The predicate is invoked with + * three arguments: (value, index, array). + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Array + * @param {Array} array The array to query. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @returns {Array} Returns the slice of `array`. + * @example + * + * var users = [ + * { 'user': 'barney', 'active': false }, + * { 'user': 'fred', 'active': false }, + * { 'user': 'pebbles', 'active': true } + * ]; + * + * _.takeWhile(users, function(o) { return !o.active; }); + * // => objects for ['barney', 'fred'] + * + * // The `_.matches` iteratee shorthand. + * _.takeWhile(users, { 'user': 'barney', 'active': false }); + * // => objects for ['barney'] + * + * // The `_.matchesProperty` iteratee shorthand. + * _.takeWhile(users, ['active', false]); + * // => objects for ['barney', 'fred'] + * + * // The `_.property` iteratee shorthand. + * _.takeWhile(users, 'active'); + * // => [] + */ + function takeWhile(array, predicate) { + return (array && array.length) + ? baseWhile(array, getIteratee(predicate, 3)) + : []; + } + + /** + * Creates an array of unique values, in order, from all given arrays using + * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero) + * for equality comparisons. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {...Array} [arrays] The arrays to inspect. + * @returns {Array} Returns the new array of combined values. + * @example + * + * _.union([2], [1, 2]); + * // => [2, 1] + */ + var union = baseRest(function(arrays) { + return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true)); + }); + + /** + * This method is like `_.union` except that it accepts `iteratee` which is + * invoked for each element of each `arrays` to generate the criterion by + * which uniqueness is computed. Result values are chosen from the first + * array in which the value occurs. The iteratee is invoked with one argument: + * (value). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {...Array} [arrays] The arrays to inspect. + * @param {Function} [iteratee=_.identity] The iteratee invoked per element. + * @returns {Array} Returns the new array of combined values. + * @example + * + * _.unionBy([2.1], [1.2, 2.3], Math.floor); + * // => [2.1, 1.2] + * + * // The `_.property` iteratee shorthand. + * _.unionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x'); + * // => [{ 'x': 1 }, { 'x': 2 }] + */ + var unionBy = baseRest(function(arrays) { + var iteratee = last(arrays); + if (isArrayLikeObject(iteratee)) { + iteratee = undefined; + } + return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), getIteratee(iteratee, 2)); + }); + + /** + * This method is like `_.union` except that it accepts `comparator` which + * is invoked to compare elements of `arrays`. Result values are chosen from + * the first array in which the value occurs. The comparator is invoked + * with two arguments: (arrVal, othVal). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {...Array} [arrays] The arrays to inspect. + * @param {Function} [comparator] The comparator invoked per element. + * @returns {Array} Returns the new array of combined values. + * @example + * + * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]; + * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }]; + * + * _.unionWith(objects, others, _.isEqual); + * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }] + */ + var unionWith = baseRest(function(arrays) { + var comparator = last(arrays); + comparator = typeof comparator == 'function' ? comparator : undefined; + return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), undefined, comparator); + }); + + /** + * Creates a duplicate-free version of an array, using + * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero) + * for equality comparisons, in which only the first occurrence of each element + * is kept. The order of result values is determined by the order they occur + * in the array. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {Array} array The array to inspect. + * @returns {Array} Returns the new duplicate free array. + * @example + * + * _.uniq([2, 1, 2]); + * // => [2, 1] + */ + function uniq(array) { + return (array && array.length) ? baseUniq(array) : []; + } + + /** + * This method is like `_.uniq` except that it accepts `iteratee` which is + * invoked for each element in `array` to generate the criterion by which + * uniqueness is computed. The order of result values is determined by the + * order they occur in the array. The iteratee is invoked with one argument: + * (value). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {Function} [iteratee=_.identity] The iteratee invoked per element. + * @returns {Array} Returns the new duplicate free array. + * @example + * + * _.uniqBy([2.1, 1.2, 2.3], Math.floor); + * // => [2.1, 1.2] + * + * // The `_.property` iteratee shorthand. + * _.uniqBy([{ 'x': 1 }, { 'x': 2 }, { 'x': 1 }], 'x'); + * // => [{ 'x': 1 }, { 'x': 2 }] + */ + function uniqBy(array, iteratee) { + return (array && array.length) ? baseUniq(array, getIteratee(iteratee, 2)) : []; + } + + /** + * This method is like `_.uniq` except that it accepts `comparator` which + * is invoked to compare elements of `array`. The order of result values is + * determined by the order they occur in the array.The comparator is invoked + * with two arguments: (arrVal, othVal). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {Function} [comparator] The comparator invoked per element. + * @returns {Array} Returns the new duplicate free array. + * @example + * + * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 2 }]; + * + * _.uniqWith(objects, _.isEqual); + * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }] + */ + function uniqWith(array, comparator) { + comparator = typeof comparator == 'function' ? comparator : undefined; + return (array && array.length) ? baseUniq(array, undefined, comparator) : []; + } + + /** + * This method is like `_.zip` except that it accepts an array of grouped + * elements and creates an array regrouping the elements to their pre-zip + * configuration. + * + * @static + * @memberOf _ + * @since 1.2.0 + * @category Array + * @param {Array} array The array of grouped elements to process. + * @returns {Array} Returns the new array of regrouped elements. + * @example + * + * var zipped = _.zip(['a', 'b'], [1, 2], [true, false]); + * // => [['a', 1, true], ['b', 2, false]] + * + * _.unzip(zipped); + * // => [['a', 'b'], [1, 2], [true, false]] + */ + function unzip(array) { + if (!(array && array.length)) { + return []; + } + var length = 0; + array = arrayFilter(array, function(group) { + if (isArrayLikeObject(group)) { + length = nativeMax(group.length, length); + return true; + } + }); + return baseTimes(length, function(index) { + return arrayMap(array, baseProperty(index)); + }); + } + + /** + * This method is like `_.unzip` except that it accepts `iteratee` to specify + * how regrouped values should be combined. The iteratee is invoked with the + * elements of each group: (...group). + * + * @static + * @memberOf _ + * @since 3.8.0 + * @category Array + * @param {Array} array The array of grouped elements to process. + * @param {Function} [iteratee=_.identity] The function to combine + * regrouped values. + * @returns {Array} Returns the new array of regrouped elements. + * @example + * + * var zipped = _.zip([1, 2], [10, 20], [100, 200]); + * // => [[1, 10, 100], [2, 20, 200]] + * + * _.unzipWith(zipped, _.add); + * // => [3, 30, 300] + */ + function unzipWith(array, iteratee) { + if (!(array && array.length)) { + return []; + } + var result = unzip(array); + if (iteratee == null) { + return result; + } + return arrayMap(result, function(group) { + return apply(iteratee, undefined, group); + }); + } + + /** + * Creates an array excluding all given values using + * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero) + * for equality comparisons. + * + * **Note:** Unlike `_.pull`, this method returns a new array. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {Array} array The array to inspect. + * @param {...*} [values] The values to exclude. + * @returns {Array} Returns the new array of filtered values. + * @see _.difference, _.xor + * @example + * + * _.without([2, 1, 2, 3], 1, 2); + * // => [3] + */ + var without = baseRest(function(array, values) { + return isArrayLikeObject(array) + ? baseDifference(array, values) + : []; + }); + + /** + * Creates an array of unique values that is the + * [symmetric difference](https://en.wikipedia.org/wiki/Symmetric_difference) + * of the given arrays. The order of result values is determined by the order + * they occur in the arrays. + * + * @static + * @memberOf _ + * @since 2.4.0 + * @category Array + * @param {...Array} [arrays] The arrays to inspect. + * @returns {Array} Returns the new array of filtered values. + * @see _.difference, _.without + * @example + * + * _.xor([2, 1], [2, 3]); + * // => [1, 3] + */ + var xor = baseRest(function(arrays) { + return baseXor(arrayFilter(arrays, isArrayLikeObject)); + }); + + /** + * This method is like `_.xor` except that it accepts `iteratee` which is + * invoked for each element of each `arrays` to generate the criterion by + * which by which they're compared. The order of result values is determined + * by the order they occur in the arrays. The iteratee is invoked with one + * argument: (value). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {...Array} [arrays] The arrays to inspect. + * @param {Function} [iteratee=_.identity] The iteratee invoked per element. + * @returns {Array} Returns the new array of filtered values. + * @example + * + * _.xorBy([2.1, 1.2], [2.3, 3.4], Math.floor); + * // => [1.2, 3.4] + * + * // The `_.property` iteratee shorthand. + * _.xorBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x'); + * // => [{ 'x': 2 }] + */ + var xorBy = baseRest(function(arrays) { + var iteratee = last(arrays); + if (isArrayLikeObject(iteratee)) { + iteratee = undefined; + } + return baseXor(arrayFilter(arrays, isArrayLikeObject), getIteratee(iteratee, 2)); + }); + + /** + * This method is like `_.xor` except that it accepts `comparator` which is + * invoked to compare elements of `arrays`. The order of result values is + * determined by the order they occur in the arrays. The comparator is invoked + * with two arguments: (arrVal, othVal). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Array + * @param {...Array} [arrays] The arrays to inspect. + * @param {Function} [comparator] The comparator invoked per element. + * @returns {Array} Returns the new array of filtered values. + * @example + * + * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]; + * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }]; + * + * _.xorWith(objects, others, _.isEqual); + * // => [{ 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }] + */ + var xorWith = baseRest(function(arrays) { + var comparator = last(arrays); + comparator = typeof comparator == 'function' ? comparator : undefined; + return baseXor(arrayFilter(arrays, isArrayLikeObject), undefined, comparator); + }); + + /** + * Creates an array of grouped elements, the first of which contains the + * first elements of the given arrays, the second of which contains the + * second elements of the given arrays, and so on. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Array + * @param {...Array} [arrays] The arrays to process. + * @returns {Array} Returns the new array of grouped elements. + * @example + * + * _.zip(['a', 'b'], [1, 2], [true, false]); + * // => [['a', 1, true], ['b', 2, false]] + */ + var zip = baseRest(unzip); + + /** + * This method is like `_.fromPairs` except that it accepts two arrays, + * one of property identifiers and one of corresponding values. + * + * @static + * @memberOf _ + * @since 0.4.0 + * @category Array + * @param {Array} [props=[]] The property identifiers. + * @param {Array} [values=[]] The property values. + * @returns {Object} Returns the new object. + * @example + * + * _.zipObject(['a', 'b'], [1, 2]); + * // => { 'a': 1, 'b': 2 } + */ + function zipObject(props, values) { + return baseZipObject(props || [], values || [], assignValue); + } + + /** + * This method is like `_.zipObject` except that it supports property paths. + * + * @static + * @memberOf _ + * @since 4.1.0 + * @category Array + * @param {Array} [props=[]] The property identifiers. + * @param {Array} [values=[]] The property values. + * @returns {Object} Returns the new object. + * @example + * + * _.zipObjectDeep(['a.b[0].c', 'a.b[1].d'], [1, 2]); + * // => { 'a': { 'b': [{ 'c': 1 }, { 'd': 2 }] } } + */ + function zipObjectDeep(props, values) { + return baseZipObject(props || [], values || [], baseSet); + } + + /** + * This method is like `_.zip` except that it accepts `iteratee` to specify + * how grouped values should be combined. The iteratee is invoked with the + * elements of each group: (...group). + * + * @static + * @memberOf _ + * @since 3.8.0 + * @category Array + * @param {...Array} [arrays] The arrays to process. + * @param {Function} [iteratee=_.identity] The function to combine + * grouped values. + * @returns {Array} Returns the new array of grouped elements. + * @example + * + * _.zipWith([1, 2], [10, 20], [100, 200], function(a, b, c) { + * return a + b + c; + * }); + * // => [111, 222] + */ + var zipWith = baseRest(function(arrays) { + var length = arrays.length, + iteratee = length > 1 ? arrays[length - 1] : undefined; + + iteratee = typeof iteratee == 'function' ? (arrays.pop(), iteratee) : undefined; + return unzipWith(arrays, iteratee); + }); + + /*------------------------------------------------------------------------*/ + + /** + * Creates a `lodash` wrapper instance that wraps `value` with explicit method + * chain sequences enabled. The result of such sequences must be unwrapped + * with `_#value`. + * + * @static + * @memberOf _ + * @since 1.3.0 + * @category Seq + * @param {*} value The value to wrap. + * @returns {Object} Returns the new `lodash` wrapper instance. + * @example + * + * var users = [ + * { 'user': 'barney', 'age': 36 }, + * { 'user': 'fred', 'age': 40 }, + * { 'user': 'pebbles', 'age': 1 } + * ]; + * + * var youngest = _ + * .chain(users) + * .sortBy('age') + * .map(function(o) { + * return o.user + ' is ' + o.age; + * }) + * .head() + * .value(); + * // => 'pebbles is 1' + */ + function chain(value) { + var result = lodash(value); + result.__chain__ = true; + return result; + } + + /** + * This method invokes `interceptor` and returns `value`. The interceptor + * is invoked with one argument; (value). The purpose of this method is to + * "tap into" a method chain sequence in order to modify intermediate results. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Seq + * @param {*} value The value to provide to `interceptor`. + * @param {Function} interceptor The function to invoke. + * @returns {*} Returns `value`. + * @example + * + * _([1, 2, 3]) + * .tap(function(array) { + * // Mutate input array. + * array.pop(); + * }) + * .reverse() + * .value(); + * // => [2, 1] + */ + function tap(value, interceptor) { + interceptor(value); + return value; + } + + /** + * This method is like `_.tap` except that it returns the result of `interceptor`. + * The purpose of this method is to "pass thru" values replacing intermediate + * results in a method chain sequence. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Seq + * @param {*} value The value to provide to `interceptor`. + * @param {Function} interceptor The function to invoke. + * @returns {*} Returns the result of `interceptor`. + * @example + * + * _(' abc ') + * .chain() + * .trim() + * .thru(function(value) { + * return [value]; + * }) + * .value(); + * // => ['abc'] + */ + function thru(value, interceptor) { + return interceptor(value); + } + + /** + * This method is the wrapper version of `_.at`. + * + * @name at + * @memberOf _ + * @since 1.0.0 + * @category Seq + * @param {...(string|string[])} [paths] The property paths to pick. + * @returns {Object} Returns the new `lodash` wrapper instance. + * @example + * + * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] }; + * + * _(object).at(['a[0].b.c', 'a[1]']).value(); + * // => [3, 4] + */ + var wrapperAt = flatRest(function(paths) { + var length = paths.length, + start = length ? paths[0] : 0, + value = this.__wrapped__, + interceptor = function(object) { return baseAt(object, paths); }; + + if (length > 1 || this.__actions__.length || + !(value instanceof LazyWrapper) || !isIndex(start)) { + return this.thru(interceptor); + } + value = value.slice(start, +start + (length ? 1 : 0)); + value.__actions__.push({ + 'func': thru, + 'args': [interceptor], + 'thisArg': undefined + }); + return new LodashWrapper(value, this.__chain__).thru(function(array) { + if (length && !array.length) { + array.push(undefined); + } + return array; + }); + }); + + /** + * Creates a `lodash` wrapper instance with explicit method chain sequences enabled. + * + * @name chain + * @memberOf _ + * @since 0.1.0 + * @category Seq + * @returns {Object} Returns the new `lodash` wrapper instance. + * @example + * + * var users = [ + * { 'user': 'barney', 'age': 36 }, + * { 'user': 'fred', 'age': 40 } + * ]; + * + * // A sequence without explicit chaining. + * _(users).head(); + * // => { 'user': 'barney', 'age': 36 } + * + * // A sequence with explicit chaining. + * _(users) + * .chain() + * .head() + * .pick('user') + * .value(); + * // => { 'user': 'barney' } + */ + function wrapperChain() { + return chain(this); + } + + /** + * Executes the chain sequence and returns the wrapped result. + * + * @name commit + * @memberOf _ + * @since 3.2.0 + * @category Seq + * @returns {Object} Returns the new `lodash` wrapper instance. + * @example + * + * var array = [1, 2]; + * var wrapped = _(array).push(3); + * + * console.log(array); + * // => [1, 2] + * + * wrapped = wrapped.commit(); + * console.log(array); + * // => [1, 2, 3] + * + * wrapped.last(); + * // => 3 + * + * console.log(array); + * // => [1, 2, 3] + */ + function wrapperCommit() { + return new LodashWrapper(this.value(), this.__chain__); + } + + /** + * Gets the next value on a wrapped object following the + * [iterator protocol](https://mdn.io/iteration_protocols#iterator). + * + * @name next + * @memberOf _ + * @since 4.0.0 + * @category Seq + * @returns {Object} Returns the next iterator value. + * @example + * + * var wrapped = _([1, 2]); + * + * wrapped.next(); + * // => { 'done': false, 'value': 1 } + * + * wrapped.next(); + * // => { 'done': false, 'value': 2 } + * + * wrapped.next(); + * // => { 'done': true, 'value': undefined } + */ + function wrapperNext() { + if (this.__values__ === undefined) { + this.__values__ = toArray(this.value()); + } + var done = this.__index__ >= this.__values__.length, + value = done ? undefined : this.__values__[this.__index__++]; + + return { 'done': done, 'value': value }; + } + + /** + * Enables the wrapper to be iterable. + * + * @name Symbol.iterator + * @memberOf _ + * @since 4.0.0 + * @category Seq + * @returns {Object} Returns the wrapper object. + * @example + * + * var wrapped = _([1, 2]); + * + * wrapped[Symbol.iterator]() === wrapped; + * // => true + * + * Array.from(wrapped); + * // => [1, 2] + */ + function wrapperToIterator() { + return this; + } + + /** + * Creates a clone of the chain sequence planting `value` as the wrapped value. + * + * @name plant + * @memberOf _ + * @since 3.2.0 + * @category Seq + * @param {*} value The value to plant. + * @returns {Object} Returns the new `lodash` wrapper instance. + * @example + * + * function square(n) { + * return n * n; + * } + * + * var wrapped = _([1, 2]).map(square); + * var other = wrapped.plant([3, 4]); + * + * other.value(); + * // => [9, 16] + * + * wrapped.value(); + * // => [1, 4] + */ + function wrapperPlant(value) { + var result, + parent = this; + + while (parent instanceof baseLodash) { + var clone = wrapperClone(parent); + clone.__index__ = 0; + clone.__values__ = undefined; + if (result) { + previous.__wrapped__ = clone; + } else { + result = clone; + } + var previous = clone; + parent = parent.__wrapped__; + } + previous.__wrapped__ = value; + return result; + } + + /** + * This method is the wrapper version of `_.reverse`. + * + * **Note:** This method mutates the wrapped array. + * + * @name reverse + * @memberOf _ + * @since 0.1.0 + * @category Seq + * @returns {Object} Returns the new `lodash` wrapper instance. + * @example + * + * var array = [1, 2, 3]; + * + * _(array).reverse().value() + * // => [3, 2, 1] + * + * console.log(array); + * // => [3, 2, 1] + */ + function wrapperReverse() { + var value = this.__wrapped__; + if (value instanceof LazyWrapper) { + var wrapped = value; + if (this.__actions__.length) { + wrapped = new LazyWrapper(this); + } + wrapped = wrapped.reverse(); + wrapped.__actions__.push({ + 'func': thru, + 'args': [reverse], + 'thisArg': undefined + }); + return new LodashWrapper(wrapped, this.__chain__); + } + return this.thru(reverse); + } + + /** + * Executes the chain sequence to resolve the unwrapped value. + * + * @name value + * @memberOf _ + * @since 0.1.0 + * @alias toJSON, valueOf + * @category Seq + * @returns {*} Returns the resolved unwrapped value. + * @example + * + * _([1, 2, 3]).value(); + * // => [1, 2, 3] + */ + function wrapperValue() { + return baseWrapperValue(this.__wrapped__, this.__actions__); + } + + /*------------------------------------------------------------------------*/ + + /** + * Creates an object composed of keys generated from the results of running + * each element of `collection` thru `iteratee`. The corresponding value of + * each key is the number of times the key was returned by `iteratee`. The + * iteratee is invoked with one argument: (value). + * + * @static + * @memberOf _ + * @since 0.5.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [iteratee=_.identity] The iteratee to transform keys. + * @returns {Object} Returns the composed aggregate object. + * @example + * + * _.countBy([6.1, 4.2, 6.3], Math.floor); + * // => { '4': 1, '6': 2 } + * + * // The `_.property` iteratee shorthand. + * _.countBy(['one', 'two', 'three'], 'length'); + * // => { '3': 2, '5': 1 } + */ + var countBy = createAggregator(function(result, value, key) { + if (hasOwnProperty.call(result, key)) { + ++result[key]; + } else { + baseAssignValue(result, key, 1); + } + }); + + /** + * Checks if `predicate` returns truthy for **all** elements of `collection`. + * Iteration is stopped once `predicate` returns falsey. The predicate is + * invoked with three arguments: (value, index|key, collection). + * + * **Note:** This method returns `true` for + * [empty collections](https://en.wikipedia.org/wiki/Empty_set) because + * [everything is true](https://en.wikipedia.org/wiki/Vacuous_truth) of + * elements of empty collections. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {boolean} Returns `true` if all elements pass the predicate check, + * else `false`. + * @example + * + * _.every([true, 1, null, 'yes'], Boolean); + * // => false + * + * var users = [ + * { 'user': 'barney', 'age': 36, 'active': false }, + * { 'user': 'fred', 'age': 40, 'active': false } + * ]; + * + * // The `_.matches` iteratee shorthand. + * _.every(users, { 'user': 'barney', 'active': false }); + * // => false + * + * // The `_.matchesProperty` iteratee shorthand. + * _.every(users, ['active', false]); + * // => true + * + * // The `_.property` iteratee shorthand. + * _.every(users, 'active'); + * // => false + */ + function every(collection, predicate, guard) { + var func = isArray(collection) ? arrayEvery : baseEvery; + if (guard && isIterateeCall(collection, predicate, guard)) { + predicate = undefined; + } + return func(collection, getIteratee(predicate, 3)); + } + + /** + * Iterates over elements of `collection`, returning an array of all elements + * `predicate` returns truthy for. The predicate is invoked with three + * arguments: (value, index|key, collection). + * + * **Note:** Unlike `_.remove`, this method returns a new array. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @returns {Array} Returns the new filtered array. + * @see _.reject + * @example + * + * var users = [ + * { 'user': 'barney', 'age': 36, 'active': true }, + * { 'user': 'fred', 'age': 40, 'active': false } + * ]; + * + * _.filter(users, function(o) { return !o.active; }); + * // => objects for ['fred'] + * + * // The `_.matches` iteratee shorthand. + * _.filter(users, { 'age': 36, 'active': true }); + * // => objects for ['barney'] + * + * // The `_.matchesProperty` iteratee shorthand. + * _.filter(users, ['active', false]); + * // => objects for ['fred'] + * + * // The `_.property` iteratee shorthand. + * _.filter(users, 'active'); + * // => objects for ['barney'] + */ + function filter(collection, predicate) { + var func = isArray(collection) ? arrayFilter : baseFilter; + return func(collection, getIteratee(predicate, 3)); + } + + /** + * Iterates over elements of `collection`, returning the first element + * `predicate` returns truthy for. The predicate is invoked with three + * arguments: (value, index|key, collection). + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object} collection The collection to inspect. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @param {number} [fromIndex=0] The index to search from. + * @returns {*} Returns the matched element, else `undefined`. + * @example + * + * var users = [ + * { 'user': 'barney', 'age': 36, 'active': true }, + * { 'user': 'fred', 'age': 40, 'active': false }, + * { 'user': 'pebbles', 'age': 1, 'active': true } + * ]; + * + * _.find(users, function(o) { return o.age < 40; }); + * // => object for 'barney' + * + * // The `_.matches` iteratee shorthand. + * _.find(users, { 'age': 1, 'active': true }); + * // => object for 'pebbles' + * + * // The `_.matchesProperty` iteratee shorthand. + * _.find(users, ['active', false]); + * // => object for 'fred' + * + * // The `_.property` iteratee shorthand. + * _.find(users, 'active'); + * // => object for 'barney' + */ + var find = createFind(findIndex); + + /** + * This method is like `_.find` except that it iterates over elements of + * `collection` from right to left. + * + * @static + * @memberOf _ + * @since 2.0.0 + * @category Collection + * @param {Array|Object} collection The collection to inspect. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @param {number} [fromIndex=collection.length-1] The index to search from. + * @returns {*} Returns the matched element, else `undefined`. + * @example + * + * _.findLast([1, 2, 3, 4], function(n) { + * return n % 2 == 1; + * }); + * // => 3 + */ + var findLast = createFind(findLastIndex); + + /** + * Creates a flattened array of values by running each element in `collection` + * thru `iteratee` and flattening the mapped results. The iteratee is invoked + * with three arguments: (value, index|key, collection). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @returns {Array} Returns the new flattened array. + * @example + * + * function duplicate(n) { + * return [n, n]; + * } + * + * _.flatMap([1, 2], duplicate); + * // => [1, 1, 2, 2] + */ + function flatMap(collection, iteratee) { + return baseFlatten(map(collection, iteratee), 1); + } + + /** + * This method is like `_.flatMap` except that it recursively flattens the + * mapped results. + * + * @static + * @memberOf _ + * @since 4.7.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @returns {Array} Returns the new flattened array. + * @example + * + * function duplicate(n) { + * return [[[n, n]]]; + * } + * + * _.flatMapDeep([1, 2], duplicate); + * // => [1, 1, 2, 2] + */ + function flatMapDeep(collection, iteratee) { + return baseFlatten(map(collection, iteratee), INFINITY); + } + + /** + * This method is like `_.flatMap` except that it recursively flattens the + * mapped results up to `depth` times. + * + * @static + * @memberOf _ + * @since 4.7.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @param {number} [depth=1] The maximum recursion depth. + * @returns {Array} Returns the new flattened array. + * @example + * + * function duplicate(n) { + * return [[[n, n]]]; + * } + * + * _.flatMapDepth([1, 2], duplicate, 2); + * // => [[1, 1], [2, 2]] + */ + function flatMapDepth(collection, iteratee, depth) { + depth = depth === undefined ? 1 : toInteger(depth); + return baseFlatten(map(collection, iteratee), depth); + } + + /** + * Iterates over elements of `collection` and invokes `iteratee` for each element. + * The iteratee is invoked with three arguments: (value, index|key, collection). + * Iteratee functions may exit iteration early by explicitly returning `false`. + * + * **Note:** As with other "Collections" methods, objects with a "length" + * property are iterated like arrays. To avoid this behavior use `_.forIn` + * or `_.forOwn` for object iteration. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @alias each + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @returns {Array|Object} Returns `collection`. + * @see _.forEachRight + * @example + * + * _.forEach([1, 2], function(value) { + * console.log(value); + * }); + * // => Logs `1` then `2`. + * + * _.forEach({ 'a': 1, 'b': 2 }, function(value, key) { + * console.log(key); + * }); + * // => Logs 'a' then 'b' (iteration order is not guaranteed). + */ + function forEach(collection, iteratee) { + var func = isArray(collection) ? arrayEach : baseEach; + return func(collection, getIteratee(iteratee, 3)); + } + + /** + * This method is like `_.forEach` except that it iterates over elements of + * `collection` from right to left. + * + * @static + * @memberOf _ + * @since 2.0.0 + * @alias eachRight + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @returns {Array|Object} Returns `collection`. + * @see _.forEach + * @example + * + * _.forEachRight([1, 2], function(value) { + * console.log(value); + * }); + * // => Logs `2` then `1`. + */ + function forEachRight(collection, iteratee) { + var func = isArray(collection) ? arrayEachRight : baseEachRight; + return func(collection, getIteratee(iteratee, 3)); + } + + /** + * Creates an object composed of keys generated from the results of running + * each element of `collection` thru `iteratee`. The order of grouped values + * is determined by the order they occur in `collection`. The corresponding + * value of each key is an array of elements responsible for generating the + * key. The iteratee is invoked with one argument: (value). + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [iteratee=_.identity] The iteratee to transform keys. + * @returns {Object} Returns the composed aggregate object. + * @example + * + * _.groupBy([6.1, 4.2, 6.3], Math.floor); + * // => { '4': [4.2], '6': [6.1, 6.3] } + * + * // The `_.property` iteratee shorthand. + * _.groupBy(['one', 'two', 'three'], 'length'); + * // => { '3': ['one', 'two'], '5': ['three'] } + */ + var groupBy = createAggregator(function(result, value, key) { + if (hasOwnProperty.call(result, key)) { + result[key].push(value); + } else { + baseAssignValue(result, key, [value]); + } + }); + + /** + * Checks if `value` is in `collection`. If `collection` is a string, it's + * checked for a substring of `value`, otherwise + * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero) + * is used for equality comparisons. If `fromIndex` is negative, it's used as + * the offset from the end of `collection`. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object|string} collection The collection to inspect. + * @param {*} value The value to search for. + * @param {number} [fromIndex=0] The index to search from. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`. + * @returns {boolean} Returns `true` if `value` is found, else `false`. + * @example + * + * _.includes([1, 2, 3], 1); + * // => true + * + * _.includes([1, 2, 3], 1, 2); + * // => false + * + * _.includes({ 'a': 1, 'b': 2 }, 1); + * // => true + * + * _.includes('abcd', 'bc'); + * // => true + */ + function includes(collection, value, fromIndex, guard) { + collection = isArrayLike(collection) ? collection : values(collection); + fromIndex = (fromIndex && !guard) ? toInteger(fromIndex) : 0; + + var length = collection.length; + if (fromIndex < 0) { + fromIndex = nativeMax(length + fromIndex, 0); + } + return isString(collection) + ? (fromIndex <= length && collection.indexOf(value, fromIndex) > -1) + : (!!length && baseIndexOf(collection, value, fromIndex) > -1); + } + + /** + * Invokes the method at `path` of each element in `collection`, returning + * an array of the results of each invoked method. Any additional arguments + * are provided to each invoked method. If `path` is a function, it's invoked + * for, and `this` bound to, each element in `collection`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Array|Function|string} path The path of the method to invoke or + * the function invoked per iteration. + * @param {...*} [args] The arguments to invoke each method with. + * @returns {Array} Returns the array of results. + * @example + * + * _.invokeMap([[5, 1, 7], [3, 2, 1]], 'sort'); + * // => [[1, 5, 7], [1, 2, 3]] + * + * _.invokeMap([123, 456], String.prototype.split, ''); + * // => [['1', '2', '3'], ['4', '5', '6']] + */ + var invokeMap = baseRest(function(collection, path, args) { + var index = -1, + isFunc = typeof path == 'function', + result = isArrayLike(collection) ? Array(collection.length) : []; + + baseEach(collection, function(value) { + result[++index] = isFunc ? apply(path, value, args) : baseInvoke(value, path, args); + }); + return result; + }); + + /** + * Creates an object composed of keys generated from the results of running + * each element of `collection` thru `iteratee`. The corresponding value of + * each key is the last element responsible for generating the key. The + * iteratee is invoked with one argument: (value). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [iteratee=_.identity] The iteratee to transform keys. + * @returns {Object} Returns the composed aggregate object. + * @example + * + * var array = [ + * { 'dir': 'left', 'code': 97 }, + * { 'dir': 'right', 'code': 100 } + * ]; + * + * _.keyBy(array, function(o) { + * return String.fromCharCode(o.code); + * }); + * // => { 'a': { 'dir': 'left', 'code': 97 }, 'd': { 'dir': 'right', 'code': 100 } } + * + * _.keyBy(array, 'dir'); + * // => { 'left': { 'dir': 'left', 'code': 97 }, 'right': { 'dir': 'right', 'code': 100 } } + */ + var keyBy = createAggregator(function(result, value, key) { + baseAssignValue(result, key, value); + }); + + /** + * Creates an array of values by running each element in `collection` thru + * `iteratee`. The iteratee is invoked with three arguments: + * (value, index|key, collection). + * + * Many lodash methods are guarded to work as iteratees for methods like + * `_.every`, `_.filter`, `_.map`, `_.mapValues`, `_.reject`, and `_.some`. + * + * The guarded methods are: + * `ary`, `chunk`, `curry`, `curryRight`, `drop`, `dropRight`, `every`, + * `fill`, `invert`, `parseInt`, `random`, `range`, `rangeRight`, `repeat`, + * `sampleSize`, `slice`, `some`, `sortBy`, `split`, `take`, `takeRight`, + * `template`, `trim`, `trimEnd`, `trimStart`, and `words` + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @returns {Array} Returns the new mapped array. + * @example + * + * function square(n) { + * return n * n; + * } + * + * _.map([4, 8], square); + * // => [16, 64] + * + * _.map({ 'a': 4, 'b': 8 }, square); + * // => [16, 64] (iteration order is not guaranteed) + * + * var users = [ + * { 'user': 'barney' }, + * { 'user': 'fred' } + * ]; + * + * // The `_.property` iteratee shorthand. + * _.map(users, 'user'); + * // => ['barney', 'fred'] + */ + function map(collection, iteratee) { + var func = isArray(collection) ? arrayMap : baseMap; + return func(collection, getIteratee(iteratee, 3)); + } + + /** + * This method is like `_.sortBy` except that it allows specifying the sort + * orders of the iteratees to sort by. If `orders` is unspecified, all values + * are sorted in ascending order. Otherwise, specify an order of "desc" for + * descending or "asc" for ascending sort order of corresponding values. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Array[]|Function[]|Object[]|string[]} [iteratees=[_.identity]] + * The iteratees to sort by. + * @param {string[]} [orders] The sort orders of `iteratees`. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`. + * @returns {Array} Returns the new sorted array. + * @example + * + * var users = [ + * { 'user': 'fred', 'age': 48 }, + * { 'user': 'barney', 'age': 34 }, + * { 'user': 'fred', 'age': 40 }, + * { 'user': 'barney', 'age': 36 } + * ]; + * + * // Sort by `user` in ascending order and by `age` in descending order. + * _.orderBy(users, ['user', 'age'], ['asc', 'desc']); + * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 40]] + */ + function orderBy(collection, iteratees, orders, guard) { + if (collection == null) { + return []; + } + if (!isArray(iteratees)) { + iteratees = iteratees == null ? [] : [iteratees]; + } + orders = guard ? undefined : orders; + if (!isArray(orders)) { + orders = orders == null ? [] : [orders]; + } + return baseOrderBy(collection, iteratees, orders); + } + + /** + * Creates an array of elements split into two groups, the first of which + * contains elements `predicate` returns truthy for, the second of which + * contains elements `predicate` returns falsey for. The predicate is + * invoked with one argument: (value). + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @returns {Array} Returns the array of grouped elements. + * @example + * + * var users = [ + * { 'user': 'barney', 'age': 36, 'active': false }, + * { 'user': 'fred', 'age': 40, 'active': true }, + * { 'user': 'pebbles', 'age': 1, 'active': false } + * ]; + * + * _.partition(users, function(o) { return o.active; }); + * // => objects for [['fred'], ['barney', 'pebbles']] + * + * // The `_.matches` iteratee shorthand. + * _.partition(users, { 'age': 1, 'active': false }); + * // => objects for [['pebbles'], ['barney', 'fred']] + * + * // The `_.matchesProperty` iteratee shorthand. + * _.partition(users, ['active', false]); + * // => objects for [['barney', 'pebbles'], ['fred']] + * + * // The `_.property` iteratee shorthand. + * _.partition(users, 'active'); + * // => objects for [['fred'], ['barney', 'pebbles']] + */ + var partition = createAggregator(function(result, value, key) { + result[key ? 0 : 1].push(value); + }, function() { return [[], []]; }); + + /** + * Reduces `collection` to a value which is the accumulated result of running + * each element in `collection` thru `iteratee`, where each successive + * invocation is supplied the return value of the previous. If `accumulator` + * is not given, the first element of `collection` is used as the initial + * value. The iteratee is invoked with four arguments: + * (accumulator, value, index|key, collection). + * + * Many lodash methods are guarded to work as iteratees for methods like + * `_.reduce`, `_.reduceRight`, and `_.transform`. + * + * The guarded methods are: + * `assign`, `defaults`, `defaultsDeep`, `includes`, `merge`, `orderBy`, + * and `sortBy` + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @param {*} [accumulator] The initial value. + * @returns {*} Returns the accumulated value. + * @see _.reduceRight + * @example + * + * _.reduce([1, 2], function(sum, n) { + * return sum + n; + * }, 0); + * // => 3 + * + * _.reduce({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) { + * (result[value] || (result[value] = [])).push(key); + * return result; + * }, {}); + * // => { '1': ['a', 'c'], '2': ['b'] } (iteration order is not guaranteed) + */ + function reduce(collection, iteratee, accumulator) { + var func = isArray(collection) ? arrayReduce : baseReduce, + initAccum = arguments.length < 3; + + return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEach); + } + + /** + * This method is like `_.reduce` except that it iterates over elements of + * `collection` from right to left. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @param {*} [accumulator] The initial value. + * @returns {*} Returns the accumulated value. + * @see _.reduce + * @example + * + * var array = [[0, 1], [2, 3], [4, 5]]; + * + * _.reduceRight(array, function(flattened, other) { + * return flattened.concat(other); + * }, []); + * // => [4, 5, 2, 3, 0, 1] + */ + function reduceRight(collection, iteratee, accumulator) { + var func = isArray(collection) ? arrayReduceRight : baseReduce, + initAccum = arguments.length < 3; + + return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEachRight); + } + + /** + * The opposite of `_.filter`; this method returns the elements of `collection` + * that `predicate` does **not** return truthy for. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @returns {Array} Returns the new filtered array. + * @see _.filter + * @example + * + * var users = [ + * { 'user': 'barney', 'age': 36, 'active': false }, + * { 'user': 'fred', 'age': 40, 'active': true } + * ]; + * + * _.reject(users, function(o) { return !o.active; }); + * // => objects for ['fred'] + * + * // The `_.matches` iteratee shorthand. + * _.reject(users, { 'age': 40, 'active': true }); + * // => objects for ['barney'] + * + * // The `_.matchesProperty` iteratee shorthand. + * _.reject(users, ['active', false]); + * // => objects for ['fred'] + * + * // The `_.property` iteratee shorthand. + * _.reject(users, 'active'); + * // => objects for ['barney'] + */ + function reject(collection, predicate) { + var func = isArray(collection) ? arrayFilter : baseFilter; + return func(collection, negate(getIteratee(predicate, 3))); + } + + /** + * Gets a random element from `collection`. + * + * @static + * @memberOf _ + * @since 2.0.0 + * @category Collection + * @param {Array|Object} collection The collection to sample. + * @returns {*} Returns the random element. + * @example + * + * _.sample([1, 2, 3, 4]); + * // => 2 + */ + function sample(collection) { + var func = isArray(collection) ? arraySample : baseSample; + return func(collection); + } + + /** + * Gets `n` random elements at unique keys from `collection` up to the + * size of `collection`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Collection + * @param {Array|Object} collection The collection to sample. + * @param {number} [n=1] The number of elements to sample. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {Array} Returns the random elements. + * @example + * + * _.sampleSize([1, 2, 3], 2); + * // => [3, 1] + * + * _.sampleSize([1, 2, 3], 4); + * // => [2, 3, 1] + */ + function sampleSize(collection, n, guard) { + if ((guard ? isIterateeCall(collection, n, guard) : n === undefined)) { + n = 1; + } else { + n = toInteger(n); + } + var func = isArray(collection) ? arraySampleSize : baseSampleSize; + return func(collection, n); + } + + /** + * Creates an array of shuffled values, using a version of the + * [Fisher-Yates shuffle](https://en.wikipedia.org/wiki/Fisher-Yates_shuffle). + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object} collection The collection to shuffle. + * @returns {Array} Returns the new shuffled array. + * @example + * + * _.shuffle([1, 2, 3, 4]); + * // => [4, 1, 3, 2] + */ + function shuffle(collection) { + var func = isArray(collection) ? arrayShuffle : baseShuffle; + return func(collection); + } + + /** + * Gets the size of `collection` by returning its length for array-like + * values or the number of own enumerable string keyed properties for objects. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object|string} collection The collection to inspect. + * @returns {number} Returns the collection size. + * @example + * + * _.size([1, 2, 3]); + * // => 3 + * + * _.size({ 'a': 1, 'b': 2 }); + * // => 2 + * + * _.size('pebbles'); + * // => 7 + */ + function size(collection) { + if (collection == null) { + return 0; + } + if (isArrayLike(collection)) { + return isString(collection) ? stringSize(collection) : collection.length; + } + var tag = getTag(collection); + if (tag == mapTag || tag == setTag) { + return collection.size; + } + return baseKeys(collection).length; + } + + /** + * Checks if `predicate` returns truthy for **any** element of `collection`. + * Iteration is stopped once `predicate` returns truthy. The predicate is + * invoked with three arguments: (value, index|key, collection). + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {boolean} Returns `true` if any element passes the predicate check, + * else `false`. + * @example + * + * _.some([null, 0, 'yes', false], Boolean); + * // => true + * + * var users = [ + * { 'user': 'barney', 'active': true }, + * { 'user': 'fred', 'active': false } + * ]; + * + * // The `_.matches` iteratee shorthand. + * _.some(users, { 'user': 'barney', 'active': false }); + * // => false + * + * // The `_.matchesProperty` iteratee shorthand. + * _.some(users, ['active', false]); + * // => true + * + * // The `_.property` iteratee shorthand. + * _.some(users, 'active'); + * // => true + */ + function some(collection, predicate, guard) { + var func = isArray(collection) ? arraySome : baseSome; + if (guard && isIterateeCall(collection, predicate, guard)) { + predicate = undefined; + } + return func(collection, getIteratee(predicate, 3)); + } + + /** + * Creates an array of elements, sorted in ascending order by the results of + * running each element in a collection thru each iteratee. This method + * performs a stable sort, that is, it preserves the original sort order of + * equal elements. The iteratees are invoked with one argument: (value). + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Collection + * @param {Array|Object} collection The collection to iterate over. + * @param {...(Function|Function[])} [iteratees=[_.identity]] + * The iteratees to sort by. + * @returns {Array} Returns the new sorted array. + * @example + * + * var users = [ + * { 'user': 'fred', 'age': 48 }, + * { 'user': 'barney', 'age': 36 }, + * { 'user': 'fred', 'age': 40 }, + * { 'user': 'barney', 'age': 34 } + * ]; + * + * _.sortBy(users, [function(o) { return o.user; }]); + * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 40]] + * + * _.sortBy(users, ['user', 'age']); + * // => objects for [['barney', 34], ['barney', 36], ['fred', 40], ['fred', 48]] + */ + var sortBy = baseRest(function(collection, iteratees) { + if (collection == null) { + return []; + } + var length = iteratees.length; + if (length > 1 && isIterateeCall(collection, iteratees[0], iteratees[1])) { + iteratees = []; + } else if (length > 2 && isIterateeCall(iteratees[0], iteratees[1], iteratees[2])) { + iteratees = [iteratees[0]]; + } + return baseOrderBy(collection, baseFlatten(iteratees, 1), []); + }); + + /*------------------------------------------------------------------------*/ + + /** + * Gets the timestamp of the number of milliseconds that have elapsed since + * the Unix epoch (1 January 1970 00:00:00 UTC). + * + * @static + * @memberOf _ + * @since 2.4.0 + * @category Date + * @returns {number} Returns the timestamp. + * @example + * + * _.defer(function(stamp) { + * console.log(_.now() - stamp); + * }, _.now()); + * // => Logs the number of milliseconds it took for the deferred invocation. + */ + var now = ctxNow || function() { + return root.Date.now(); + }; + + /*------------------------------------------------------------------------*/ + + /** + * The opposite of `_.before`; this method creates a function that invokes + * `func` once it's called `n` or more times. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Function + * @param {number} n The number of calls before `func` is invoked. + * @param {Function} func The function to restrict. + * @returns {Function} Returns the new restricted function. + * @example + * + * var saves = ['profile', 'settings']; + * + * var done = _.after(saves.length, function() { + * console.log('done saving!'); + * }); + * + * _.forEach(saves, function(type) { + * asyncSave({ 'type': type, 'complete': done }); + * }); + * // => Logs 'done saving!' after the two async saves have completed. + */ + function after(n, func) { + if (typeof func != 'function') { + throw new TypeError(FUNC_ERROR_TEXT); + } + n = toInteger(n); + return function() { + if (--n < 1) { + return func.apply(this, arguments); + } + }; + } + + /** + * Creates a function that invokes `func`, with up to `n` arguments, + * ignoring any additional arguments. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Function + * @param {Function} func The function to cap arguments for. + * @param {number} [n=func.length] The arity cap. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {Function} Returns the new capped function. + * @example + * + * _.map(['6', '8', '10'], _.ary(parseInt, 1)); + * // => [6, 8, 10] + */ + function ary(func, n, guard) { + n = guard ? undefined : n; + n = (func && n == null) ? func.length : n; + return createWrap(func, WRAP_ARY_FLAG, undefined, undefined, undefined, undefined, n); + } + + /** + * Creates a function that invokes `func`, with the `this` binding and arguments + * of the created function, while it's called less than `n` times. Subsequent + * calls to the created function return the result of the last `func` invocation. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Function + * @param {number} n The number of calls at which `func` is no longer invoked. + * @param {Function} func The function to restrict. + * @returns {Function} Returns the new restricted function. + * @example + * + * jQuery(element).on('click', _.before(5, addContactToList)); + * // => Allows adding up to 4 contacts to the list. + */ + function before(n, func) { + var result; + if (typeof func != 'function') { + throw new TypeError(FUNC_ERROR_TEXT); + } + n = toInteger(n); + return function() { + if (--n > 0) { + result = func.apply(this, arguments); + } + if (n <= 1) { + func = undefined; + } + return result; + }; + } + + /** + * Creates a function that invokes `func` with the `this` binding of `thisArg` + * and `partials` prepended to the arguments it receives. + * + * The `_.bind.placeholder` value, which defaults to `_` in monolithic builds, + * may be used as a placeholder for partially applied arguments. + * + * **Note:** Unlike native `Function#bind`, this method doesn't set the "length" + * property of bound functions. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Function + * @param {Function} func The function to bind. + * @param {*} thisArg The `this` binding of `func`. + * @param {...*} [partials] The arguments to be partially applied. + * @returns {Function} Returns the new bound function. + * @example + * + * function greet(greeting, punctuation) { + * return greeting + ' ' + this.user + punctuation; + * } + * + * var object = { 'user': 'fred' }; + * + * var bound = _.bind(greet, object, 'hi'); + * bound('!'); + * // => 'hi fred!' + * + * // Bound with placeholders. + * var bound = _.bind(greet, object, _, '!'); + * bound('hi'); + * // => 'hi fred!' + */ + var bind = baseRest(function(func, thisArg, partials) { + var bitmask = WRAP_BIND_FLAG; + if (partials.length) { + var holders = replaceHolders(partials, getHolder(bind)); + bitmask |= WRAP_PARTIAL_FLAG; + } + return createWrap(func, bitmask, thisArg, partials, holders); + }); + + /** + * Creates a function that invokes the method at `object[key]` with `partials` + * prepended to the arguments it receives. + * + * This method differs from `_.bind` by allowing bound functions to reference + * methods that may be redefined or don't yet exist. See + * [Peter Michaux's article](http://peter.michaux.ca/articles/lazy-function-definition-pattern) + * for more details. + * + * The `_.bindKey.placeholder` value, which defaults to `_` in monolithic + * builds, may be used as a placeholder for partially applied arguments. + * + * @static + * @memberOf _ + * @since 0.10.0 + * @category Function + * @param {Object} object The object to invoke the method on. + * @param {string} key The key of the method. + * @param {...*} [partials] The arguments to be partially applied. + * @returns {Function} Returns the new bound function. + * @example + * + * var object = { + * 'user': 'fred', + * 'greet': function(greeting, punctuation) { + * return greeting + ' ' + this.user + punctuation; + * } + * }; + * + * var bound = _.bindKey(object, 'greet', 'hi'); + * bound('!'); + * // => 'hi fred!' + * + * object.greet = function(greeting, punctuation) { + * return greeting + 'ya ' + this.user + punctuation; + * }; + * + * bound('!'); + * // => 'hiya fred!' + * + * // Bound with placeholders. + * var bound = _.bindKey(object, 'greet', _, '!'); + * bound('hi'); + * // => 'hiya fred!' + */ + var bindKey = baseRest(function(object, key, partials) { + var bitmask = WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG; + if (partials.length) { + var holders = replaceHolders(partials, getHolder(bindKey)); + bitmask |= WRAP_PARTIAL_FLAG; + } + return createWrap(key, bitmask, object, partials, holders); + }); + + /** + * Creates a function that accepts arguments of `func` and either invokes + * `func` returning its result, if at least `arity` number of arguments have + * been provided, or returns a function that accepts the remaining `func` + * arguments, and so on. The arity of `func` may be specified if `func.length` + * is not sufficient. + * + * The `_.curry.placeholder` value, which defaults to `_` in monolithic builds, + * may be used as a placeholder for provided arguments. + * + * **Note:** This method doesn't set the "length" property of curried functions. + * + * @static + * @memberOf _ + * @since 2.0.0 + * @category Function + * @param {Function} func The function to curry. + * @param {number} [arity=func.length] The arity of `func`. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {Function} Returns the new curried function. + * @example + * + * var abc = function(a, b, c) { + * return [a, b, c]; + * }; + * + * var curried = _.curry(abc); + * + * curried(1)(2)(3); + * // => [1, 2, 3] + * + * curried(1, 2)(3); + * // => [1, 2, 3] + * + * curried(1, 2, 3); + * // => [1, 2, 3] + * + * // Curried with placeholders. + * curried(1)(_, 3)(2); + * // => [1, 2, 3] + */ + function curry(func, arity, guard) { + arity = guard ? undefined : arity; + var result = createWrap(func, WRAP_CURRY_FLAG, undefined, undefined, undefined, undefined, undefined, arity); + result.placeholder = curry.placeholder; + return result; + } + + /** + * This method is like `_.curry` except that arguments are applied to `func` + * in the manner of `_.partialRight` instead of `_.partial`. + * + * The `_.curryRight.placeholder` value, which defaults to `_` in monolithic + * builds, may be used as a placeholder for provided arguments. + * + * **Note:** This method doesn't set the "length" property of curried functions. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Function + * @param {Function} func The function to curry. + * @param {number} [arity=func.length] The arity of `func`. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {Function} Returns the new curried function. + * @example + * + * var abc = function(a, b, c) { + * return [a, b, c]; + * }; + * + * var curried = _.curryRight(abc); + * + * curried(3)(2)(1); + * // => [1, 2, 3] + * + * curried(2, 3)(1); + * // => [1, 2, 3] + * + * curried(1, 2, 3); + * // => [1, 2, 3] + * + * // Curried with placeholders. + * curried(3)(1, _)(2); + * // => [1, 2, 3] + */ + function curryRight(func, arity, guard) { + arity = guard ? undefined : arity; + var result = createWrap(func, WRAP_CURRY_RIGHT_FLAG, undefined, undefined, undefined, undefined, undefined, arity); + result.placeholder = curryRight.placeholder; + return result; + } + + /** + * Creates a debounced function that delays invoking `func` until after `wait` + * milliseconds have elapsed since the last time the debounced function was + * invoked. The debounced function comes with a `cancel` method to cancel + * delayed `func` invocations and a `flush` method to immediately invoke them. + * Provide `options` to indicate whether `func` should be invoked on the + * leading and/or trailing edge of the `wait` timeout. The `func` is invoked + * with the last arguments provided to the debounced function. Subsequent + * calls to the debounced function return the result of the last `func` + * invocation. + * + * **Note:** If `leading` and `trailing` options are `true`, `func` is + * invoked on the trailing edge of the timeout only if the debounced function + * is invoked more than once during the `wait` timeout. + * + * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred + * until to the next tick, similar to `setTimeout` with a timeout of `0`. + * + * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/) + * for details over the differences between `_.debounce` and `_.throttle`. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Function + * @param {Function} func The function to debounce. + * @param {number} [wait=0] The number of milliseconds to delay. + * @param {Object} [options={}] The options object. + * @param {boolean} [options.leading=false] + * Specify invoking on the leading edge of the timeout. + * @param {number} [options.maxWait] + * The maximum time `func` is allowed to be delayed before it's invoked. + * @param {boolean} [options.trailing=true] + * Specify invoking on the trailing edge of the timeout. + * @returns {Function} Returns the new debounced function. + * @example + * + * // Avoid costly calculations while the window size is in flux. + * jQuery(window).on('resize', _.debounce(calculateLayout, 150)); + * + * // Invoke `sendMail` when clicked, debouncing subsequent calls. + * jQuery(element).on('click', _.debounce(sendMail, 300, { + * 'leading': true, + * 'trailing': false + * })); + * + * // Ensure `batchLog` is invoked once after 1 second of debounced calls. + * var debounced = _.debounce(batchLog, 250, { 'maxWait': 1000 }); + * var source = new EventSource('/stream'); + * jQuery(source).on('message', debounced); + * + * // Cancel the trailing debounced invocation. + * jQuery(window).on('popstate', debounced.cancel); + */ + function debounce(func, wait, options) { + var lastArgs, + lastThis, + maxWait, + result, + timerId, + lastCallTime, + lastInvokeTime = 0, + leading = false, + maxing = false, + trailing = true; + + if (typeof func != 'function') { + throw new TypeError(FUNC_ERROR_TEXT); + } + wait = toNumber(wait) || 0; + if (isObject(options)) { + leading = !!options.leading; + maxing = 'maxWait' in options; + maxWait = maxing ? nativeMax(toNumber(options.maxWait) || 0, wait) : maxWait; + trailing = 'trailing' in options ? !!options.trailing : trailing; + } + + function invokeFunc(time) { + var args = lastArgs, + thisArg = lastThis; + + lastArgs = lastThis = undefined; + lastInvokeTime = time; + result = func.apply(thisArg, args); + return result; + } + + function leadingEdge(time) { + // Reset any `maxWait` timer. + lastInvokeTime = time; + // Start the timer for the trailing edge. + timerId = setTimeout(timerExpired, wait); + // Invoke the leading edge. + return leading ? invokeFunc(time) : result; + } + + function remainingWait(time) { + var timeSinceLastCall = time - lastCallTime, + timeSinceLastInvoke = time - lastInvokeTime, + timeWaiting = wait - timeSinceLastCall; + + return maxing + ? nativeMin(timeWaiting, maxWait - timeSinceLastInvoke) + : timeWaiting; + } + + function shouldInvoke(time) { + var timeSinceLastCall = time - lastCallTime, + timeSinceLastInvoke = time - lastInvokeTime; + + // Either this is the first call, activity has stopped and we're at the + // trailing edge, the system time has gone backwards and we're treating + // it as the trailing edge, or we've hit the `maxWait` limit. + return (lastCallTime === undefined || (timeSinceLastCall >= wait) || + (timeSinceLastCall < 0) || (maxing && timeSinceLastInvoke >= maxWait)); + } + + function timerExpired() { + var time = now(); + if (shouldInvoke(time)) { + return trailingEdge(time); + } + // Restart the timer. + timerId = setTimeout(timerExpired, remainingWait(time)); + } + + function trailingEdge(time) { + timerId = undefined; + + // Only invoke if we have `lastArgs` which means `func` has been + // debounced at least once. + if (trailing && lastArgs) { + return invokeFunc(time); + } + lastArgs = lastThis = undefined; + return result; + } + + function cancel() { + if (timerId !== undefined) { + clearTimeout(timerId); + } + lastInvokeTime = 0; + lastArgs = lastCallTime = lastThis = timerId = undefined; + } + + function flush() { + return timerId === undefined ? result : trailingEdge(now()); + } + + function debounced() { + var time = now(), + isInvoking = shouldInvoke(time); + + lastArgs = arguments; + lastThis = this; + lastCallTime = time; + + if (isInvoking) { + if (timerId === undefined) { + return leadingEdge(lastCallTime); + } + if (maxing) { + // Handle invocations in a tight loop. + clearTimeout(timerId); + timerId = setTimeout(timerExpired, wait); + return invokeFunc(lastCallTime); + } + } + if (timerId === undefined) { + timerId = setTimeout(timerExpired, wait); + } + return result; + } + debounced.cancel = cancel; + debounced.flush = flush; + return debounced; + } + + /** + * Defers invoking the `func` until the current call stack has cleared. Any + * additional arguments are provided to `func` when it's invoked. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Function + * @param {Function} func The function to defer. + * @param {...*} [args] The arguments to invoke `func` with. + * @returns {number} Returns the timer id. + * @example + * + * _.defer(function(text) { + * console.log(text); + * }, 'deferred'); + * // => Logs 'deferred' after one millisecond. + */ + var defer = baseRest(function(func, args) { + return baseDelay(func, 1, args); + }); + + /** + * Invokes `func` after `wait` milliseconds. Any additional arguments are + * provided to `func` when it's invoked. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Function + * @param {Function} func The function to delay. + * @param {number} wait The number of milliseconds to delay invocation. + * @param {...*} [args] The arguments to invoke `func` with. + * @returns {number} Returns the timer id. + * @example + * + * _.delay(function(text) { + * console.log(text); + * }, 1000, 'later'); + * // => Logs 'later' after one second. + */ + var delay = baseRest(function(func, wait, args) { + return baseDelay(func, toNumber(wait) || 0, args); + }); + + /** + * Creates a function that invokes `func` with arguments reversed. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Function + * @param {Function} func The function to flip arguments for. + * @returns {Function} Returns the new flipped function. + * @example + * + * var flipped = _.flip(function() { + * return _.toArray(arguments); + * }); + * + * flipped('a', 'b', 'c', 'd'); + * // => ['d', 'c', 'b', 'a'] + */ + function flip(func) { + return createWrap(func, WRAP_FLIP_FLAG); + } + + /** + * Creates a function that memoizes the result of `func`. If `resolver` is + * provided, it determines the cache key for storing the result based on the + * arguments provided to the memoized function. By default, the first argument + * provided to the memoized function is used as the map cache key. The `func` + * is invoked with the `this` binding of the memoized function. + * + * **Note:** The cache is exposed as the `cache` property on the memoized + * function. Its creation may be customized by replacing the `_.memoize.Cache` + * constructor with one whose instances implement the + * [`Map`](http://ecma-international.org/ecma-262/7.0/#sec-properties-of-the-map-prototype-object) + * method interface of `clear`, `delete`, `get`, `has`, and `set`. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Function + * @param {Function} func The function to have its output memoized. + * @param {Function} [resolver] The function to resolve the cache key. + * @returns {Function} Returns the new memoized function. + * @example + * + * var object = { 'a': 1, 'b': 2 }; + * var other = { 'c': 3, 'd': 4 }; + * + * var values = _.memoize(_.values); + * values(object); + * // => [1, 2] + * + * values(other); + * // => [3, 4] + * + * object.a = 2; + * values(object); + * // => [1, 2] + * + * // Modify the result cache. + * values.cache.set(object, ['a', 'b']); + * values(object); + * // => ['a', 'b'] + * + * // Replace `_.memoize.Cache`. + * _.memoize.Cache = WeakMap; + */ + function memoize(func, resolver) { + if (typeof func != 'function' || (resolver != null && typeof resolver != 'function')) { + throw new TypeError(FUNC_ERROR_TEXT); + } + var memoized = function() { + var args = arguments, + key = resolver ? resolver.apply(this, args) : args[0], + cache = memoized.cache; + + if (cache.has(key)) { + return cache.get(key); + } + var result = func.apply(this, args); + memoized.cache = cache.set(key, result) || cache; + return result; + }; + memoized.cache = new (memoize.Cache || MapCache); + return memoized; + } + + // Expose `MapCache`. + memoize.Cache = MapCache; + + /** + * Creates a function that negates the result of the predicate `func`. The + * `func` predicate is invoked with the `this` binding and arguments of the + * created function. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Function + * @param {Function} predicate The predicate to negate. + * @returns {Function} Returns the new negated function. + * @example + * + * function isEven(n) { + * return n % 2 == 0; + * } + * + * _.filter([1, 2, 3, 4, 5, 6], _.negate(isEven)); + * // => [1, 3, 5] + */ + function negate(predicate) { + if (typeof predicate != 'function') { + throw new TypeError(FUNC_ERROR_TEXT); + } + return function() { + var args = arguments; + switch (args.length) { + case 0: return !predicate.call(this); + case 1: return !predicate.call(this, args[0]); + case 2: return !predicate.call(this, args[0], args[1]); + case 3: return !predicate.call(this, args[0], args[1], args[2]); + } + return !predicate.apply(this, args); + }; + } + + /** + * Creates a function that is restricted to invoking `func` once. Repeat calls + * to the function return the value of the first invocation. The `func` is + * invoked with the `this` binding and arguments of the created function. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Function + * @param {Function} func The function to restrict. + * @returns {Function} Returns the new restricted function. + * @example + * + * var initialize = _.once(createApplication); + * initialize(); + * initialize(); + * // => `createApplication` is invoked once + */ + function once(func) { + return before(2, func); + } + + /** + * Creates a function that invokes `func` with its arguments transformed. + * + * @static + * @since 4.0.0 + * @memberOf _ + * @category Function + * @param {Function} func The function to wrap. + * @param {...(Function|Function[])} [transforms=[_.identity]] + * The argument transforms. + * @returns {Function} Returns the new function. + * @example + * + * function doubled(n) { + * return n * 2; + * } + * + * function square(n) { + * return n * n; + * } + * + * var func = _.overArgs(function(x, y) { + * return [x, y]; + * }, [square, doubled]); + * + * func(9, 3); + * // => [81, 6] + * + * func(10, 5); + * // => [100, 10] + */ + var overArgs = castRest(function(func, transforms) { + transforms = (transforms.length == 1 && isArray(transforms[0])) + ? arrayMap(transforms[0], baseUnary(getIteratee())) + : arrayMap(baseFlatten(transforms, 1), baseUnary(getIteratee())); + + var funcsLength = transforms.length; + return baseRest(function(args) { + var index = -1, + length = nativeMin(args.length, funcsLength); + + while (++index < length) { + args[index] = transforms[index].call(this, args[index]); + } + return apply(func, this, args); + }); + }); + + /** + * Creates a function that invokes `func` with `partials` prepended to the + * arguments it receives. This method is like `_.bind` except it does **not** + * alter the `this` binding. + * + * The `_.partial.placeholder` value, which defaults to `_` in monolithic + * builds, may be used as a placeholder for partially applied arguments. + * + * **Note:** This method doesn't set the "length" property of partially + * applied functions. + * + * @static + * @memberOf _ + * @since 0.2.0 + * @category Function + * @param {Function} func The function to partially apply arguments to. + * @param {...*} [partials] The arguments to be partially applied. + * @returns {Function} Returns the new partially applied function. + * @example + * + * function greet(greeting, name) { + * return greeting + ' ' + name; + * } + * + * var sayHelloTo = _.partial(greet, 'hello'); + * sayHelloTo('fred'); + * // => 'hello fred' + * + * // Partially applied with placeholders. + * var greetFred = _.partial(greet, _, 'fred'); + * greetFred('hi'); + * // => 'hi fred' + */ + var partial = baseRest(function(func, partials) { + var holders = replaceHolders(partials, getHolder(partial)); + return createWrap(func, WRAP_PARTIAL_FLAG, undefined, partials, holders); + }); + + /** + * This method is like `_.partial` except that partially applied arguments + * are appended to the arguments it receives. + * + * The `_.partialRight.placeholder` value, which defaults to `_` in monolithic + * builds, may be used as a placeholder for partially applied arguments. + * + * **Note:** This method doesn't set the "length" property of partially + * applied functions. + * + * @static + * @memberOf _ + * @since 1.0.0 + * @category Function + * @param {Function} func The function to partially apply arguments to. + * @param {...*} [partials] The arguments to be partially applied. + * @returns {Function} Returns the new partially applied function. + * @example + * + * function greet(greeting, name) { + * return greeting + ' ' + name; + * } + * + * var greetFred = _.partialRight(greet, 'fred'); + * greetFred('hi'); + * // => 'hi fred' + * + * // Partially applied with placeholders. + * var sayHelloTo = _.partialRight(greet, 'hello', _); + * sayHelloTo('fred'); + * // => 'hello fred' + */ + var partialRight = baseRest(function(func, partials) { + var holders = replaceHolders(partials, getHolder(partialRight)); + return createWrap(func, WRAP_PARTIAL_RIGHT_FLAG, undefined, partials, holders); + }); + + /** + * Creates a function that invokes `func` with arguments arranged according + * to the specified `indexes` where the argument value at the first index is + * provided as the first argument, the argument value at the second index is + * provided as the second argument, and so on. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Function + * @param {Function} func The function to rearrange arguments for. + * @param {...(number|number[])} indexes The arranged argument indexes. + * @returns {Function} Returns the new function. + * @example + * + * var rearged = _.rearg(function(a, b, c) { + * return [a, b, c]; + * }, [2, 0, 1]); + * + * rearged('b', 'c', 'a') + * // => ['a', 'b', 'c'] + */ + var rearg = flatRest(function(func, indexes) { + return createWrap(func, WRAP_REARG_FLAG, undefined, undefined, undefined, indexes); + }); + + /** + * Creates a function that invokes `func` with the `this` binding of the + * created function and arguments from `start` and beyond provided as + * an array. + * + * **Note:** This method is based on the + * [rest parameter](https://mdn.io/rest_parameters). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Function + * @param {Function} func The function to apply a rest parameter to. + * @param {number} [start=func.length-1] The start position of the rest parameter. + * @returns {Function} Returns the new function. + * @example + * + * var say = _.rest(function(what, names) { + * return what + ' ' + _.initial(names).join(', ') + + * (_.size(names) > 1 ? ', & ' : '') + _.last(names); + * }); + * + * say('hello', 'fred', 'barney', 'pebbles'); + * // => 'hello fred, barney, & pebbles' + */ + function rest(func, start) { + if (typeof func != 'function') { + throw new TypeError(FUNC_ERROR_TEXT); + } + start = start === undefined ? start : toInteger(start); + return baseRest(func, start); + } + + /** + * Creates a function that invokes `func` with the `this` binding of the + * create function and an array of arguments much like + * [`Function#apply`](http://www.ecma-international.org/ecma-262/7.0/#sec-function.prototype.apply). + * + * **Note:** This method is based on the + * [spread operator](https://mdn.io/spread_operator). + * + * @static + * @memberOf _ + * @since 3.2.0 + * @category Function + * @param {Function} func The function to spread arguments over. + * @param {number} [start=0] The start position of the spread. + * @returns {Function} Returns the new function. + * @example + * + * var say = _.spread(function(who, what) { + * return who + ' says ' + what; + * }); + * + * say(['fred', 'hello']); + * // => 'fred says hello' + * + * var numbers = Promise.all([ + * Promise.resolve(40), + * Promise.resolve(36) + * ]); + * + * numbers.then(_.spread(function(x, y) { + * return x + y; + * })); + * // => a Promise of 76 + */ + function spread(func, start) { + if (typeof func != 'function') { + throw new TypeError(FUNC_ERROR_TEXT); + } + start = start == null ? 0 : nativeMax(toInteger(start), 0); + return baseRest(function(args) { + var array = args[start], + otherArgs = castSlice(args, 0, start); + + if (array) { + arrayPush(otherArgs, array); + } + return apply(func, this, otherArgs); + }); + } + + /** + * Creates a throttled function that only invokes `func` at most once per + * every `wait` milliseconds. The throttled function comes with a `cancel` + * method to cancel delayed `func` invocations and a `flush` method to + * immediately invoke them. Provide `options` to indicate whether `func` + * should be invoked on the leading and/or trailing edge of the `wait` + * timeout. The `func` is invoked with the last arguments provided to the + * throttled function. Subsequent calls to the throttled function return the + * result of the last `func` invocation. + * + * **Note:** If `leading` and `trailing` options are `true`, `func` is + * invoked on the trailing edge of the timeout only if the throttled function + * is invoked more than once during the `wait` timeout. + * + * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred + * until to the next tick, similar to `setTimeout` with a timeout of `0`. + * + * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/) + * for details over the differences between `_.throttle` and `_.debounce`. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Function + * @param {Function} func The function to throttle. + * @param {number} [wait=0] The number of milliseconds to throttle invocations to. + * @param {Object} [options={}] The options object. + * @param {boolean} [options.leading=true] + * Specify invoking on the leading edge of the timeout. + * @param {boolean} [options.trailing=true] + * Specify invoking on the trailing edge of the timeout. + * @returns {Function} Returns the new throttled function. + * @example + * + * // Avoid excessively updating the position while scrolling. + * jQuery(window).on('scroll', _.throttle(updatePosition, 100)); + * + * // Invoke `renewToken` when the click event is fired, but not more than once every 5 minutes. + * var throttled = _.throttle(renewToken, 300000, { 'trailing': false }); + * jQuery(element).on('click', throttled); + * + * // Cancel the trailing throttled invocation. + * jQuery(window).on('popstate', throttled.cancel); + */ + function throttle(func, wait, options) { + var leading = true, + trailing = true; + + if (typeof func != 'function') { + throw new TypeError(FUNC_ERROR_TEXT); + } + if (isObject(options)) { + leading = 'leading' in options ? !!options.leading : leading; + trailing = 'trailing' in options ? !!options.trailing : trailing; + } + return debounce(func, wait, { + 'leading': leading, + 'maxWait': wait, + 'trailing': trailing + }); + } + + /** + * Creates a function that accepts up to one argument, ignoring any + * additional arguments. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Function + * @param {Function} func The function to cap arguments for. + * @returns {Function} Returns the new capped function. + * @example + * + * _.map(['6', '8', '10'], _.unary(parseInt)); + * // => [6, 8, 10] + */ + function unary(func) { + return ary(func, 1); + } + + /** + * Creates a function that provides `value` to `wrapper` as its first + * argument. Any additional arguments provided to the function are appended + * to those provided to the `wrapper`. The wrapper is invoked with the `this` + * binding of the created function. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Function + * @param {*} value The value to wrap. + * @param {Function} [wrapper=identity] The wrapper function. + * @returns {Function} Returns the new function. + * @example + * + * var p = _.wrap(_.escape, function(func, text) { + * return '<p>' + func(text) + '</p>'; + * }); + * + * p('fred, barney, & pebbles'); + * // => '<p>fred, barney, & pebbles</p>' + */ + function wrap(value, wrapper) { + return partial(castFunction(wrapper), value); + } + + /*------------------------------------------------------------------------*/ + + /** + * Casts `value` as an array if it's not one. + * + * @static + * @memberOf _ + * @since 4.4.0 + * @category Lang + * @param {*} value The value to inspect. + * @returns {Array} Returns the cast array. + * @example + * + * _.castArray(1); + * // => [1] + * + * _.castArray({ 'a': 1 }); + * // => [{ 'a': 1 }] + * + * _.castArray('abc'); + * // => ['abc'] + * + * _.castArray(null); + * // => [null] + * + * _.castArray(undefined); + * // => [undefined] + * + * _.castArray(); + * // => [] + * + * var array = [1, 2, 3]; + * console.log(_.castArray(array) === array); + * // => true + */ + function castArray() { + if (!arguments.length) { + return []; + } + var value = arguments[0]; + return isArray(value) ? value : [value]; + } + + /** + * Creates a shallow clone of `value`. + * + * **Note:** This method is loosely based on the + * [structured clone algorithm](https://mdn.io/Structured_clone_algorithm) + * and supports cloning arrays, array buffers, booleans, date objects, maps, + * numbers, `Object` objects, regexes, sets, strings, symbols, and typed + * arrays. The own enumerable properties of `arguments` objects are cloned + * as plain objects. An empty object is returned for uncloneable values such + * as error objects, functions, DOM nodes, and WeakMaps. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to clone. + * @returns {*} Returns the cloned value. + * @see _.cloneDeep + * @example + * + * var objects = [{ 'a': 1 }, { 'b': 2 }]; + * + * var shallow = _.clone(objects); + * console.log(shallow[0] === objects[0]); + * // => true + */ + function clone(value) { + return baseClone(value, CLONE_SYMBOLS_FLAG); + } + + /** + * This method is like `_.clone` except that it accepts `customizer` which + * is invoked to produce the cloned value. If `customizer` returns `undefined`, + * cloning is handled by the method instead. The `customizer` is invoked with + * up to four arguments; (value [, index|key, object, stack]). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to clone. + * @param {Function} [customizer] The function to customize cloning. + * @returns {*} Returns the cloned value. + * @see _.cloneDeepWith + * @example + * + * function customizer(value) { + * if (_.isElement(value)) { + * return value.cloneNode(false); + * } + * } + * + * var el = _.cloneWith(document.body, customizer); + * + * console.log(el === document.body); + * // => false + * console.log(el.nodeName); + * // => 'BODY' + * console.log(el.childNodes.length); + * // => 0 + */ + function cloneWith(value, customizer) { + customizer = typeof customizer == 'function' ? customizer : undefined; + return baseClone(value, CLONE_SYMBOLS_FLAG, customizer); + } + + /** + * This method is like `_.clone` except that it recursively clones `value`. + * + * @static + * @memberOf _ + * @since 1.0.0 + * @category Lang + * @param {*} value The value to recursively clone. + * @returns {*} Returns the deep cloned value. + * @see _.clone + * @example + * + * var objects = [{ 'a': 1 }, { 'b': 2 }]; + * + * var deep = _.cloneDeep(objects); + * console.log(deep[0] === objects[0]); + * // => false + */ + function cloneDeep(value) { + return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG); + } + + /** + * This method is like `_.cloneWith` except that it recursively clones `value`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to recursively clone. + * @param {Function} [customizer] The function to customize cloning. + * @returns {*} Returns the deep cloned value. + * @see _.cloneWith + * @example + * + * function customizer(value) { + * if (_.isElement(value)) { + * return value.cloneNode(true); + * } + * } + * + * var el = _.cloneDeepWith(document.body, customizer); + * + * console.log(el === document.body); + * // => false + * console.log(el.nodeName); + * // => 'BODY' + * console.log(el.childNodes.length); + * // => 20 + */ + function cloneDeepWith(value, customizer) { + customizer = typeof customizer == 'function' ? customizer : undefined; + return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG, customizer); + } + + /** + * Checks if `object` conforms to `source` by invoking the predicate + * properties of `source` with the corresponding property values of `object`. + * + * **Note:** This method is equivalent to `_.conforms` when `source` is + * partially applied. + * + * @static + * @memberOf _ + * @since 4.14.0 + * @category Lang + * @param {Object} object The object to inspect. + * @param {Object} source The object of property predicates to conform to. + * @returns {boolean} Returns `true` if `object` conforms, else `false`. + * @example + * + * var object = { 'a': 1, 'b': 2 }; + * + * _.conformsTo(object, { 'b': function(n) { return n > 1; } }); + * // => true + * + * _.conformsTo(object, { 'b': function(n) { return n > 2; } }); + * // => false + */ + function conformsTo(object, source) { + return source == null || baseConformsTo(object, source, keys(source)); + } + + /** + * Performs a + * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero) + * comparison between two values to determine if they are equivalent. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to compare. + * @param {*} other The other value to compare. + * @returns {boolean} Returns `true` if the values are equivalent, else `false`. + * @example + * + * var object = { 'a': 1 }; + * var other = { 'a': 1 }; + * + * _.eq(object, object); + * // => true + * + * _.eq(object, other); + * // => false + * + * _.eq('a', 'a'); + * // => true + * + * _.eq('a', Object('a')); + * // => false + * + * _.eq(NaN, NaN); + * // => true + */ + function eq(value, other) { + return value === other || (value !== value && other !== other); + } + + /** + * Checks if `value` is greater than `other`. + * + * @static + * @memberOf _ + * @since 3.9.0 + * @category Lang + * @param {*} value The value to compare. + * @param {*} other The other value to compare. + * @returns {boolean} Returns `true` if `value` is greater than `other`, + * else `false`. + * @see _.lt + * @example + * + * _.gt(3, 1); + * // => true + * + * _.gt(3, 3); + * // => false + * + * _.gt(1, 3); + * // => false + */ + var gt = createRelationalOperation(baseGt); + + /** + * Checks if `value` is greater than or equal to `other`. + * + * @static + * @memberOf _ + * @since 3.9.0 + * @category Lang + * @param {*} value The value to compare. + * @param {*} other The other value to compare. + * @returns {boolean} Returns `true` if `value` is greater than or equal to + * `other`, else `false`. + * @see _.lte + * @example + * + * _.gte(3, 1); + * // => true + * + * _.gte(3, 3); + * // => true + * + * _.gte(1, 3); + * // => false + */ + var gte = createRelationalOperation(function(value, other) { + return value >= other; + }); + + /** + * Checks if `value` is likely an `arguments` object. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is an `arguments` object, + * else `false`. + * @example + * + * _.isArguments(function() { return arguments; }()); + * // => true + * + * _.isArguments([1, 2, 3]); + * // => false + */ + var isArguments = baseIsArguments(function() { return arguments; }()) ? baseIsArguments : function(value) { + return isObjectLike(value) && hasOwnProperty.call(value, 'callee') && + !propertyIsEnumerable.call(value, 'callee'); + }; + + /** + * Checks if `value` is classified as an `Array` object. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is an array, else `false`. + * @example + * + * _.isArray([1, 2, 3]); + * // => true + * + * _.isArray(document.body.children); + * // => false + * + * _.isArray('abc'); + * // => false + * + * _.isArray(_.noop); + * // => false + */ + var isArray = Array.isArray; + + /** + * Checks if `value` is classified as an `ArrayBuffer` object. + * + * @static + * @memberOf _ + * @since 4.3.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`. + * @example + * + * _.isArrayBuffer(new ArrayBuffer(2)); + * // => true + * + * _.isArrayBuffer(new Array(2)); + * // => false + */ + var isArrayBuffer = nodeIsArrayBuffer ? baseUnary(nodeIsArrayBuffer) : baseIsArrayBuffer; + + /** + * Checks if `value` is array-like. A value is considered array-like if it's + * not a function and has a `value.length` that's an integer greater than or + * equal to `0` and less than or equal to `Number.MAX_SAFE_INTEGER`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is array-like, else `false`. + * @example + * + * _.isArrayLike([1, 2, 3]); + * // => true + * + * _.isArrayLike(document.body.children); + * // => true + * + * _.isArrayLike('abc'); + * // => true + * + * _.isArrayLike(_.noop); + * // => false + */ + function isArrayLike(value) { + return value != null && isLength(value.length) && !isFunction(value); + } + + /** + * This method is like `_.isArrayLike` except that it also checks if `value` + * is an object. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is an array-like object, + * else `false`. + * @example + * + * _.isArrayLikeObject([1, 2, 3]); + * // => true + * + * _.isArrayLikeObject(document.body.children); + * // => true + * + * _.isArrayLikeObject('abc'); + * // => false + * + * _.isArrayLikeObject(_.noop); + * // => false + */ + function isArrayLikeObject(value) { + return isObjectLike(value) && isArrayLike(value); + } + + /** + * Checks if `value` is classified as a boolean primitive or object. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a boolean, else `false`. + * @example + * + * _.isBoolean(false); + * // => true + * + * _.isBoolean(null); + * // => false + */ + function isBoolean(value) { + return value === true || value === false || + (isObjectLike(value) && baseGetTag(value) == boolTag); + } + + /** + * Checks if `value` is a buffer. + * + * @static + * @memberOf _ + * @since 4.3.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a buffer, else `false`. + * @example + * + * _.isBuffer(new Buffer(2)); + * // => true + * + * _.isBuffer(new Uint8Array(2)); + * // => false + */ + var isBuffer = nativeIsBuffer || stubFalse; + + /** + * Checks if `value` is classified as a `Date` object. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a date object, else `false`. + * @example + * + * _.isDate(new Date); + * // => true + * + * _.isDate('Mon April 23 2012'); + * // => false + */ + var isDate = nodeIsDate ? baseUnary(nodeIsDate) : baseIsDate; + + /** + * Checks if `value` is likely a DOM element. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a DOM element, else `false`. + * @example + * + * _.isElement(document.body); + * // => true + * + * _.isElement('<body>'); + * // => false + */ + function isElement(value) { + return isObjectLike(value) && value.nodeType === 1 && !isPlainObject(value); + } + + /** + * Checks if `value` is an empty object, collection, map, or set. + * + * Objects are considered empty if they have no own enumerable string keyed + * properties. + * + * Array-like values such as `arguments` objects, arrays, buffers, strings, or + * jQuery-like collections are considered empty if they have a `length` of `0`. + * Similarly, maps and sets are considered empty if they have a `size` of `0`. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is empty, else `false`. + * @example + * + * _.isEmpty(null); + * // => true + * + * _.isEmpty(true); + * // => true + * + * _.isEmpty(1); + * // => true + * + * _.isEmpty([1, 2, 3]); + * // => false + * + * _.isEmpty({ 'a': 1 }); + * // => false + */ + function isEmpty(value) { + if (value == null) { + return true; + } + if (isArrayLike(value) && + (isArray(value) || typeof value == 'string' || typeof value.splice == 'function' || + isBuffer(value) || isTypedArray(value) || isArguments(value))) { + return !value.length; + } + var tag = getTag(value); + if (tag == mapTag || tag == setTag) { + return !value.size; + } + if (isPrototype(value)) { + return !baseKeys(value).length; + } + for (var key in value) { + if (hasOwnProperty.call(value, key)) { + return false; + } + } + return true; + } + + /** + * Performs a deep comparison between two values to determine if they are + * equivalent. + * + * **Note:** This method supports comparing arrays, array buffers, booleans, + * date objects, error objects, maps, numbers, `Object` objects, regexes, + * sets, strings, symbols, and typed arrays. `Object` objects are compared + * by their own, not inherited, enumerable properties. Functions and DOM + * nodes are compared by strict equality, i.e. `===`. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to compare. + * @param {*} other The other value to compare. + * @returns {boolean} Returns `true` if the values are equivalent, else `false`. + * @example + * + * var object = { 'a': 1 }; + * var other = { 'a': 1 }; + * + * _.isEqual(object, other); + * // => true + * + * object === other; + * // => false + */ + function isEqual(value, other) { + return baseIsEqual(value, other); + } + + /** + * This method is like `_.isEqual` except that it accepts `customizer` which + * is invoked to compare values. If `customizer` returns `undefined`, comparisons + * are handled by the method instead. The `customizer` is invoked with up to + * six arguments: (objValue, othValue [, index|key, object, other, stack]). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to compare. + * @param {*} other The other value to compare. + * @param {Function} [customizer] The function to customize comparisons. + * @returns {boolean} Returns `true` if the values are equivalent, else `false`. + * @example + * + * function isGreeting(value) { + * return /^h(?:i|ello)$/.test(value); + * } + * + * function customizer(objValue, othValue) { + * if (isGreeting(objValue) && isGreeting(othValue)) { + * return true; + * } + * } + * + * var array = ['hello', 'goodbye']; + * var other = ['hi', 'goodbye']; + * + * _.isEqualWith(array, other, customizer); + * // => true + */ + function isEqualWith(value, other, customizer) { + customizer = typeof customizer == 'function' ? customizer : undefined; + var result = customizer ? customizer(value, other) : undefined; + return result === undefined ? baseIsEqual(value, other, undefined, customizer) : !!result; + } + + /** + * Checks if `value` is an `Error`, `EvalError`, `RangeError`, `ReferenceError`, + * `SyntaxError`, `TypeError`, or `URIError` object. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is an error object, else `false`. + * @example + * + * _.isError(new Error); + * // => true + * + * _.isError(Error); + * // => false + */ + function isError(value) { + if (!isObjectLike(value)) { + return false; + } + var tag = baseGetTag(value); + return tag == errorTag || tag == domExcTag || + (typeof value.message == 'string' && typeof value.name == 'string' && !isPlainObject(value)); + } + + /** + * Checks if `value` is a finite primitive number. + * + * **Note:** This method is based on + * [`Number.isFinite`](https://mdn.io/Number/isFinite). + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a finite number, else `false`. + * @example + * + * _.isFinite(3); + * // => true + * + * _.isFinite(Number.MIN_VALUE); + * // => true + * + * _.isFinite(Infinity); + * // => false + * + * _.isFinite('3'); + * // => false + */ + function isFinite(value) { + return typeof value == 'number' && nativeIsFinite(value); + } + + /** + * Checks if `value` is classified as a `Function` object. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a function, else `false`. + * @example + * + * _.isFunction(_); + * // => true + * + * _.isFunction(/abc/); + * // => false + */ + function isFunction(value) { + if (!isObject(value)) { + return false; + } + // The use of `Object#toString` avoids issues with the `typeof` operator + // in Safari 9 which returns 'object' for typed arrays and other constructors. + var tag = baseGetTag(value); + return tag == funcTag || tag == genTag || tag == asyncTag || tag == proxyTag; + } + + /** + * Checks if `value` is an integer. + * + * **Note:** This method is based on + * [`Number.isInteger`](https://mdn.io/Number/isInteger). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is an integer, else `false`. + * @example + * + * _.isInteger(3); + * // => true + * + * _.isInteger(Number.MIN_VALUE); + * // => false + * + * _.isInteger(Infinity); + * // => false + * + * _.isInteger('3'); + * // => false + */ + function isInteger(value) { + return typeof value == 'number' && value == toInteger(value); + } + + /** + * Checks if `value` is a valid array-like length. + * + * **Note:** This method is loosely based on + * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a valid length, else `false`. + * @example + * + * _.isLength(3); + * // => true + * + * _.isLength(Number.MIN_VALUE); + * // => false + * + * _.isLength(Infinity); + * // => false + * + * _.isLength('3'); + * // => false + */ + function isLength(value) { + return typeof value == 'number' && + value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER; + } + + /** + * Checks if `value` is the + * [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types) + * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`) + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is an object, else `false`. + * @example + * + * _.isObject({}); + * // => true + * + * _.isObject([1, 2, 3]); + * // => true + * + * _.isObject(_.noop); + * // => true + * + * _.isObject(null); + * // => false + */ + function isObject(value) { + var type = typeof value; + return value != null && (type == 'object' || type == 'function'); + } + + /** + * Checks if `value` is object-like. A value is object-like if it's not `null` + * and has a `typeof` result of "object". + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is object-like, else `false`. + * @example + * + * _.isObjectLike({}); + * // => true + * + * _.isObjectLike([1, 2, 3]); + * // => true + * + * _.isObjectLike(_.noop); + * // => false + * + * _.isObjectLike(null); + * // => false + */ + function isObjectLike(value) { + return value != null && typeof value == 'object'; + } + + /** + * Checks if `value` is classified as a `Map` object. + * + * @static + * @memberOf _ + * @since 4.3.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a map, else `false`. + * @example + * + * _.isMap(new Map); + * // => true + * + * _.isMap(new WeakMap); + * // => false + */ + var isMap = nodeIsMap ? baseUnary(nodeIsMap) : baseIsMap; + + /** + * Performs a partial deep comparison between `object` and `source` to + * determine if `object` contains equivalent property values. + * + * **Note:** This method is equivalent to `_.matches` when `source` is + * partially applied. + * + * Partial comparisons will match empty array and empty object `source` + * values against any array or object value, respectively. See `_.isEqual` + * for a list of supported value comparisons. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Lang + * @param {Object} object The object to inspect. + * @param {Object} source The object of property values to match. + * @returns {boolean} Returns `true` if `object` is a match, else `false`. + * @example + * + * var object = { 'a': 1, 'b': 2 }; + * + * _.isMatch(object, { 'b': 2 }); + * // => true + * + * _.isMatch(object, { 'b': 1 }); + * // => false + */ + function isMatch(object, source) { + return object === source || baseIsMatch(object, source, getMatchData(source)); + } + + /** + * This method is like `_.isMatch` except that it accepts `customizer` which + * is invoked to compare values. If `customizer` returns `undefined`, comparisons + * are handled by the method instead. The `customizer` is invoked with five + * arguments: (objValue, srcValue, index|key, object, source). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {Object} object The object to inspect. + * @param {Object} source The object of property values to match. + * @param {Function} [customizer] The function to customize comparisons. + * @returns {boolean} Returns `true` if `object` is a match, else `false`. + * @example + * + * function isGreeting(value) { + * return /^h(?:i|ello)$/.test(value); + * } + * + * function customizer(objValue, srcValue) { + * if (isGreeting(objValue) && isGreeting(srcValue)) { + * return true; + * } + * } + * + * var object = { 'greeting': 'hello' }; + * var source = { 'greeting': 'hi' }; + * + * _.isMatchWith(object, source, customizer); + * // => true + */ + function isMatchWith(object, source, customizer) { + customizer = typeof customizer == 'function' ? customizer : undefined; + return baseIsMatch(object, source, getMatchData(source), customizer); + } + + /** + * Checks if `value` is `NaN`. + * + * **Note:** This method is based on + * [`Number.isNaN`](https://mdn.io/Number/isNaN) and is not the same as + * global [`isNaN`](https://mdn.io/isNaN) which returns `true` for + * `undefined` and other non-number values. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`. + * @example + * + * _.isNaN(NaN); + * // => true + * + * _.isNaN(new Number(NaN)); + * // => true + * + * isNaN(undefined); + * // => true + * + * _.isNaN(undefined); + * // => false + */ + function isNaN(value) { + // An `NaN` primitive is the only value that is not equal to itself. + // Perform the `toStringTag` check first to avoid errors with some + // ActiveX objects in IE. + return isNumber(value) && value != +value; + } + + /** + * Checks if `value` is a pristine native function. + * + * **Note:** This method can't reliably detect native functions in the presence + * of the core-js package because core-js circumvents this kind of detection. + * Despite multiple requests, the core-js maintainer has made it clear: any + * attempt to fix the detection will be obstructed. As a result, we're left + * with little choice but to throw an error. Unfortunately, this also affects + * packages, like [babel-polyfill](https://www.npmjs.com/package/babel-polyfill), + * which rely on core-js. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a native function, + * else `false`. + * @example + * + * _.isNative(Array.prototype.push); + * // => true + * + * _.isNative(_); + * // => false + */ + function isNative(value) { + if (isMaskable(value)) { + throw new Error(CORE_ERROR_TEXT); + } + return baseIsNative(value); + } + + /** + * Checks if `value` is `null`. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is `null`, else `false`. + * @example + * + * _.isNull(null); + * // => true + * + * _.isNull(void 0); + * // => false + */ + function isNull(value) { + return value === null; + } + + /** + * Checks if `value` is `null` or `undefined`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is nullish, else `false`. + * @example + * + * _.isNil(null); + * // => true + * + * _.isNil(void 0); + * // => true + * + * _.isNil(NaN); + * // => false + */ + function isNil(value) { + return value == null; + } + + /** + * Checks if `value` is classified as a `Number` primitive or object. + * + * **Note:** To exclude `Infinity`, `-Infinity`, and `NaN`, which are + * classified as numbers, use the `_.isFinite` method. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a number, else `false`. + * @example + * + * _.isNumber(3); + * // => true + * + * _.isNumber(Number.MIN_VALUE); + * // => true + * + * _.isNumber(Infinity); + * // => true + * + * _.isNumber('3'); + * // => false + */ + function isNumber(value) { + return typeof value == 'number' || + (isObjectLike(value) && baseGetTag(value) == numberTag); + } + + /** + * Checks if `value` is a plain object, that is, an object created by the + * `Object` constructor or one with a `[[Prototype]]` of `null`. + * + * @static + * @memberOf _ + * @since 0.8.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a plain object, else `false`. + * @example + * + * function Foo() { + * this.a = 1; + * } + * + * _.isPlainObject(new Foo); + * // => false + * + * _.isPlainObject([1, 2, 3]); + * // => false + * + * _.isPlainObject({ 'x': 0, 'y': 0 }); + * // => true + * + * _.isPlainObject(Object.create(null)); + * // => true + */ + function isPlainObject(value) { + if (!isObjectLike(value) || baseGetTag(value) != objectTag) { + return false; + } + var proto = getPrototype(value); + if (proto === null) { + return true; + } + var Ctor = hasOwnProperty.call(proto, 'constructor') && proto.constructor; + return typeof Ctor == 'function' && Ctor instanceof Ctor && + funcToString.call(Ctor) == objectCtorString; + } + + /** + * Checks if `value` is classified as a `RegExp` object. + * + * @static + * @memberOf _ + * @since 0.1.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a regexp, else `false`. + * @example + * + * _.isRegExp(/abc/); + * // => true + * + * _.isRegExp('/abc/'); + * // => false + */ + var isRegExp = nodeIsRegExp ? baseUnary(nodeIsRegExp) : baseIsRegExp; + + /** + * Checks if `value` is a safe integer. An integer is safe if it's an IEEE-754 + * double precision number which isn't the result of a rounded unsafe integer. + * + * **Note:** This method is based on + * [`Number.isSafeInteger`](https://mdn.io/Number/isSafeInteger). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a safe integer, else `false`. + * @example + * + * _.isSafeInteger(3); + * // => true + * + * _.isSafeInteger(Number.MIN_VALUE); + * // => false + * + * _.isSafeInteger(Infinity); + * // => false + * + * _.isSafeInteger('3'); + * // => false + */ + function isSafeInteger(value) { + return isInteger(value) && value >= -MAX_SAFE_INTEGER && value <= MAX_SAFE_INTEGER; + } + + /** + * Checks if `value` is classified as a `Set` object. + * + * @static + * @memberOf _ + * @since 4.3.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a set, else `false`. + * @example + * + * _.isSet(new Set); + * // => true + * + * _.isSet(new WeakSet); + * // => false + */ + var isSet = nodeIsSet ? baseUnary(nodeIsSet) : baseIsSet; + + /** + * Checks if `value` is classified as a `String` primitive or object. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a string, else `false`. + * @example + * + * _.isString('abc'); + * // => true + * + * _.isString(1); + * // => false + */ + function isString(value) { + return typeof value == 'string' || + (!isArray(value) && isObjectLike(value) && baseGetTag(value) == stringTag); + } + + /** + * Checks if `value` is classified as a `Symbol` primitive or object. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a symbol, else `false`. + * @example + * + * _.isSymbol(Symbol.iterator); + * // => true + * + * _.isSymbol('abc'); + * // => false + */ + function isSymbol(value) { + return typeof value == 'symbol' || + (isObjectLike(value) && baseGetTag(value) == symbolTag); + } + + /** + * Checks if `value` is classified as a typed array. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a typed array, else `false`. + * @example + * + * _.isTypedArray(new Uint8Array); + * // => true + * + * _.isTypedArray([]); + * // => false + */ + var isTypedArray = nodeIsTypedArray ? baseUnary(nodeIsTypedArray) : baseIsTypedArray; + + /** + * Checks if `value` is `undefined`. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is `undefined`, else `false`. + * @example + * + * _.isUndefined(void 0); + * // => true + * + * _.isUndefined(null); + * // => false + */ + function isUndefined(value) { + return value === undefined; + } + + /** + * Checks if `value` is classified as a `WeakMap` object. + * + * @static + * @memberOf _ + * @since 4.3.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a weak map, else `false`. + * @example + * + * _.isWeakMap(new WeakMap); + * // => true + * + * _.isWeakMap(new Map); + * // => false + */ + function isWeakMap(value) { + return isObjectLike(value) && getTag(value) == weakMapTag; + } + + /** + * Checks if `value` is classified as a `WeakSet` object. + * + * @static + * @memberOf _ + * @since 4.3.0 + * @category Lang + * @param {*} value The value to check. + * @returns {boolean} Returns `true` if `value` is a weak set, else `false`. + * @example + * + * _.isWeakSet(new WeakSet); + * // => true + * + * _.isWeakSet(new Set); + * // => false + */ + function isWeakSet(value) { + return isObjectLike(value) && baseGetTag(value) == weakSetTag; + } + + /** + * Checks if `value` is less than `other`. + * + * @static + * @memberOf _ + * @since 3.9.0 + * @category Lang + * @param {*} value The value to compare. + * @param {*} other The other value to compare. + * @returns {boolean} Returns `true` if `value` is less than `other`, + * else `false`. + * @see _.gt + * @example + * + * _.lt(1, 3); + * // => true + * + * _.lt(3, 3); + * // => false + * + * _.lt(3, 1); + * // => false + */ + var lt = createRelationalOperation(baseLt); + + /** + * Checks if `value` is less than or equal to `other`. + * + * @static + * @memberOf _ + * @since 3.9.0 + * @category Lang + * @param {*} value The value to compare. + * @param {*} other The other value to compare. + * @returns {boolean} Returns `true` if `value` is less than or equal to + * `other`, else `false`. + * @see _.gte + * @example + * + * _.lte(1, 3); + * // => true + * + * _.lte(3, 3); + * // => true + * + * _.lte(3, 1); + * // => false + */ + var lte = createRelationalOperation(function(value, other) { + return value <= other; + }); + + /** + * Converts `value` to an array. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Lang + * @param {*} value The value to convert. + * @returns {Array} Returns the converted array. + * @example + * + * _.toArray({ 'a': 1, 'b': 2 }); + * // => [1, 2] + * + * _.toArray('abc'); + * // => ['a', 'b', 'c'] + * + * _.toArray(1); + * // => [] + * + * _.toArray(null); + * // => [] + */ + function toArray(value) { + if (!value) { + return []; + } + if (isArrayLike(value)) { + return isString(value) ? stringToArray(value) : copyArray(value); + } + if (symIterator && value[symIterator]) { + return iteratorToArray(value[symIterator]()); + } + var tag = getTag(value), + func = tag == mapTag ? mapToArray : (tag == setTag ? setToArray : values); + + return func(value); + } + + /** + * Converts `value` to a finite number. + * + * @static + * @memberOf _ + * @since 4.12.0 + * @category Lang + * @param {*} value The value to convert. + * @returns {number} Returns the converted number. + * @example + * + * _.toFinite(3.2); + * // => 3.2 + * + * _.toFinite(Number.MIN_VALUE); + * // => 5e-324 + * + * _.toFinite(Infinity); + * // => 1.7976931348623157e+308 + * + * _.toFinite('3.2'); + * // => 3.2 + */ + function toFinite(value) { + if (!value) { + return value === 0 ? value : 0; + } + value = toNumber(value); + if (value === INFINITY || value === -INFINITY) { + var sign = (value < 0 ? -1 : 1); + return sign * MAX_INTEGER; + } + return value === value ? value : 0; + } + + /** + * Converts `value` to an integer. + * + * **Note:** This method is loosely based on + * [`ToInteger`](http://www.ecma-international.org/ecma-262/7.0/#sec-tointeger). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to convert. + * @returns {number} Returns the converted integer. + * @example + * + * _.toInteger(3.2); + * // => 3 + * + * _.toInteger(Number.MIN_VALUE); + * // => 0 + * + * _.toInteger(Infinity); + * // => 1.7976931348623157e+308 + * + * _.toInteger('3.2'); + * // => 3 + */ + function toInteger(value) { + var result = toFinite(value), + remainder = result % 1; + + return result === result ? (remainder ? result - remainder : result) : 0; + } + + /** + * Converts `value` to an integer suitable for use as the length of an + * array-like object. + * + * **Note:** This method is based on + * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to convert. + * @returns {number} Returns the converted integer. + * @example + * + * _.toLength(3.2); + * // => 3 + * + * _.toLength(Number.MIN_VALUE); + * // => 0 + * + * _.toLength(Infinity); + * // => 4294967295 + * + * _.toLength('3.2'); + * // => 3 + */ + function toLength(value) { + return value ? baseClamp(toInteger(value), 0, MAX_ARRAY_LENGTH) : 0; + } + + /** + * Converts `value` to a number. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to process. + * @returns {number} Returns the number. + * @example + * + * _.toNumber(3.2); + * // => 3.2 + * + * _.toNumber(Number.MIN_VALUE); + * // => 5e-324 + * + * _.toNumber(Infinity); + * // => Infinity + * + * _.toNumber('3.2'); + * // => 3.2 + */ + function toNumber(value) { + if (typeof value == 'number') { + return value; + } + if (isSymbol(value)) { + return NAN; + } + if (isObject(value)) { + var other = typeof value.valueOf == 'function' ? value.valueOf() : value; + value = isObject(other) ? (other + '') : other; + } + if (typeof value != 'string') { + return value === 0 ? value : +value; + } + value = value.replace(reTrim, ''); + var isBinary = reIsBinary.test(value); + return (isBinary || reIsOctal.test(value)) + ? freeParseInt(value.slice(2), isBinary ? 2 : 8) + : (reIsBadHex.test(value) ? NAN : +value); + } + + /** + * Converts `value` to a plain object flattening inherited enumerable string + * keyed properties of `value` to own properties of the plain object. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Lang + * @param {*} value The value to convert. + * @returns {Object} Returns the converted plain object. + * @example + * + * function Foo() { + * this.b = 2; + * } + * + * Foo.prototype.c = 3; + * + * _.assign({ 'a': 1 }, new Foo); + * // => { 'a': 1, 'b': 2 } + * + * _.assign({ 'a': 1 }, _.toPlainObject(new Foo)); + * // => { 'a': 1, 'b': 2, 'c': 3 } + */ + function toPlainObject(value) { + return copyObject(value, keysIn(value)); + } + + /** + * Converts `value` to a safe integer. A safe integer can be compared and + * represented correctly. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to convert. + * @returns {number} Returns the converted integer. + * @example + * + * _.toSafeInteger(3.2); + * // => 3 + * + * _.toSafeInteger(Number.MIN_VALUE); + * // => 0 + * + * _.toSafeInteger(Infinity); + * // => 9007199254740991 + * + * _.toSafeInteger('3.2'); + * // => 3 + */ + function toSafeInteger(value) { + return value + ? baseClamp(toInteger(value), -MAX_SAFE_INTEGER, MAX_SAFE_INTEGER) + : (value === 0 ? value : 0); + } + + /** + * Converts `value` to a string. An empty string is returned for `null` + * and `undefined` values. The sign of `-0` is preserved. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Lang + * @param {*} value The value to convert. + * @returns {string} Returns the converted string. + * @example + * + * _.toString(null); + * // => '' + * + * _.toString(-0); + * // => '-0' + * + * _.toString([1, 2, 3]); + * // => '1,2,3' + */ + function toString(value) { + return value == null ? '' : baseToString(value); + } + + /*------------------------------------------------------------------------*/ + + /** + * Assigns own enumerable string keyed properties of source objects to the + * destination object. Source objects are applied from left to right. + * Subsequent sources overwrite property assignments of previous sources. + * + * **Note:** This method mutates `object` and is loosely based on + * [`Object.assign`](https://mdn.io/Object/assign). + * + * @static + * @memberOf _ + * @since 0.10.0 + * @category Object + * @param {Object} object The destination object. + * @param {...Object} [sources] The source objects. + * @returns {Object} Returns `object`. + * @see _.assignIn + * @example + * + * function Foo() { + * this.a = 1; + * } + * + * function Bar() { + * this.c = 3; + * } + * + * Foo.prototype.b = 2; + * Bar.prototype.d = 4; + * + * _.assign({ 'a': 0 }, new Foo, new Bar); + * // => { 'a': 1, 'c': 3 } + */ + var assign = createAssigner(function(object, source) { + if (isPrototype(source) || isArrayLike(source)) { + copyObject(source, keys(source), object); + return; + } + for (var key in source) { + if (hasOwnProperty.call(source, key)) { + assignValue(object, key, source[key]); + } + } + }); + + /** + * This method is like `_.assign` except that it iterates over own and + * inherited source properties. + * + * **Note:** This method mutates `object`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @alias extend + * @category Object + * @param {Object} object The destination object. + * @param {...Object} [sources] The source objects. + * @returns {Object} Returns `object`. + * @see _.assign + * @example + * + * function Foo() { + * this.a = 1; + * } + * + * function Bar() { + * this.c = 3; + * } + * + * Foo.prototype.b = 2; + * Bar.prototype.d = 4; + * + * _.assignIn({ 'a': 0 }, new Foo, new Bar); + * // => { 'a': 1, 'b': 2, 'c': 3, 'd': 4 } + */ + var assignIn = createAssigner(function(object, source) { + copyObject(source, keysIn(source), object); + }); + + /** + * This method is like `_.assignIn` except that it accepts `customizer` + * which is invoked to produce the assigned values. If `customizer` returns + * `undefined`, assignment is handled by the method instead. The `customizer` + * is invoked with five arguments: (objValue, srcValue, key, object, source). + * + * **Note:** This method mutates `object`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @alias extendWith + * @category Object + * @param {Object} object The destination object. + * @param {...Object} sources The source objects. + * @param {Function} [customizer] The function to customize assigned values. + * @returns {Object} Returns `object`. + * @see _.assignWith + * @example + * + * function customizer(objValue, srcValue) { + * return _.isUndefined(objValue) ? srcValue : objValue; + * } + * + * var defaults = _.partialRight(_.assignInWith, customizer); + * + * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 }); + * // => { 'a': 1, 'b': 2 } + */ + var assignInWith = createAssigner(function(object, source, srcIndex, customizer) { + copyObject(source, keysIn(source), object, customizer); + }); + + /** + * This method is like `_.assign` except that it accepts `customizer` + * which is invoked to produce the assigned values. If `customizer` returns + * `undefined`, assignment is handled by the method instead. The `customizer` + * is invoked with five arguments: (objValue, srcValue, key, object, source). + * + * **Note:** This method mutates `object`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Object + * @param {Object} object The destination object. + * @param {...Object} sources The source objects. + * @param {Function} [customizer] The function to customize assigned values. + * @returns {Object} Returns `object`. + * @see _.assignInWith + * @example + * + * function customizer(objValue, srcValue) { + * return _.isUndefined(objValue) ? srcValue : objValue; + * } + * + * var defaults = _.partialRight(_.assignWith, customizer); + * + * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 }); + * // => { 'a': 1, 'b': 2 } + */ + var assignWith = createAssigner(function(object, source, srcIndex, customizer) { + copyObject(source, keys(source), object, customizer); + }); + + /** + * Creates an array of values corresponding to `paths` of `object`. + * + * @static + * @memberOf _ + * @since 1.0.0 + * @category Object + * @param {Object} object The object to iterate over. + * @param {...(string|string[])} [paths] The property paths to pick. + * @returns {Array} Returns the picked values. + * @example + * + * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] }; + * + * _.at(object, ['a[0].b.c', 'a[1]']); + * // => [3, 4] + */ + var at = flatRest(baseAt); + + /** + * Creates an object that inherits from the `prototype` object. If a + * `properties` object is given, its own enumerable string keyed properties + * are assigned to the created object. + * + * @static + * @memberOf _ + * @since 2.3.0 + * @category Object + * @param {Object} prototype The object to inherit from. + * @param {Object} [properties] The properties to assign to the object. + * @returns {Object} Returns the new object. + * @example + * + * function Shape() { + * this.x = 0; + * this.y = 0; + * } + * + * function Circle() { + * Shape.call(this); + * } + * + * Circle.prototype = _.create(Shape.prototype, { + * 'constructor': Circle + * }); + * + * var circle = new Circle; + * circle instanceof Circle; + * // => true + * + * circle instanceof Shape; + * // => true + */ + function create(prototype, properties) { + var result = baseCreate(prototype); + return properties == null ? result : baseAssign(result, properties); + } + + /** + * Assigns own and inherited enumerable string keyed properties of source + * objects to the destination object for all destination properties that + * resolve to `undefined`. Source objects are applied from left to right. + * Once a property is set, additional values of the same property are ignored. + * + * **Note:** This method mutates `object`. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Object + * @param {Object} object The destination object. + * @param {...Object} [sources] The source objects. + * @returns {Object} Returns `object`. + * @see _.defaultsDeep + * @example + * + * _.defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 }); + * // => { 'a': 1, 'b': 2 } + */ + var defaults = baseRest(function(object, sources) { + object = Object(object); + + var index = -1; + var length = sources.length; + var guard = length > 2 ? sources[2] : undefined; + + if (guard && isIterateeCall(sources[0], sources[1], guard)) { + length = 1; + } + + while (++index < length) { + var source = sources[index]; + var props = keysIn(source); + var propsIndex = -1; + var propsLength = props.length; + + while (++propsIndex < propsLength) { + var key = props[propsIndex]; + var value = object[key]; + + if (value === undefined || + (eq(value, objectProto[key]) && !hasOwnProperty.call(object, key))) { + object[key] = source[key]; + } + } + } + + return object; + }); + + /** + * This method is like `_.defaults` except that it recursively assigns + * default properties. + * + * **Note:** This method mutates `object`. + * + * @static + * @memberOf _ + * @since 3.10.0 + * @category Object + * @param {Object} object The destination object. + * @param {...Object} [sources] The source objects. + * @returns {Object} Returns `object`. + * @see _.defaults + * @example + * + * _.defaultsDeep({ 'a': { 'b': 2 } }, { 'a': { 'b': 1, 'c': 3 } }); + * // => { 'a': { 'b': 2, 'c': 3 } } + */ + var defaultsDeep = baseRest(function(args) { + args.push(undefined, customDefaultsMerge); + return apply(mergeWith, undefined, args); + }); + + /** + * This method is like `_.find` except that it returns the key of the first + * element `predicate` returns truthy for instead of the element itself. + * + * @static + * @memberOf _ + * @since 1.1.0 + * @category Object + * @param {Object} object The object to inspect. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @returns {string|undefined} Returns the key of the matched element, + * else `undefined`. + * @example + * + * var users = { + * 'barney': { 'age': 36, 'active': true }, + * 'fred': { 'age': 40, 'active': false }, + * 'pebbles': { 'age': 1, 'active': true } + * }; + * + * _.findKey(users, function(o) { return o.age < 40; }); + * // => 'barney' (iteration order is not guaranteed) + * + * // The `_.matches` iteratee shorthand. + * _.findKey(users, { 'age': 1, 'active': true }); + * // => 'pebbles' + * + * // The `_.matchesProperty` iteratee shorthand. + * _.findKey(users, ['active', false]); + * // => 'fred' + * + * // The `_.property` iteratee shorthand. + * _.findKey(users, 'active'); + * // => 'barney' + */ + function findKey(object, predicate) { + return baseFindKey(object, getIteratee(predicate, 3), baseForOwn); + } + + /** + * This method is like `_.findKey` except that it iterates over elements of + * a collection in the opposite order. + * + * @static + * @memberOf _ + * @since 2.0.0 + * @category Object + * @param {Object} object The object to inspect. + * @param {Function} [predicate=_.identity] The function invoked per iteration. + * @returns {string|undefined} Returns the key of the matched element, + * else `undefined`. + * @example + * + * var users = { + * 'barney': { 'age': 36, 'active': true }, + * 'fred': { 'age': 40, 'active': false }, + * 'pebbles': { 'age': 1, 'active': true } + * }; + * + * _.findLastKey(users, function(o) { return o.age < 40; }); + * // => returns 'pebbles' assuming `_.findKey` returns 'barney' + * + * // The `_.matches` iteratee shorthand. + * _.findLastKey(users, { 'age': 36, 'active': true }); + * // => 'barney' + * + * // The `_.matchesProperty` iteratee shorthand. + * _.findLastKey(users, ['active', false]); + * // => 'fred' + * + * // The `_.property` iteratee shorthand. + * _.findLastKey(users, 'active'); + * // => 'pebbles' + */ + function findLastKey(object, predicate) { + return baseFindKey(object, getIteratee(predicate, 3), baseForOwnRight); + } + + /** + * Iterates over own and inherited enumerable string keyed properties of an + * object and invokes `iteratee` for each property. The iteratee is invoked + * with three arguments: (value, key, object). Iteratee functions may exit + * iteration early by explicitly returning `false`. + * + * @static + * @memberOf _ + * @since 0.3.0 + * @category Object + * @param {Object} object The object to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @returns {Object} Returns `object`. + * @see _.forInRight + * @example + * + * function Foo() { + * this.a = 1; + * this.b = 2; + * } + * + * Foo.prototype.c = 3; + * + * _.forIn(new Foo, function(value, key) { + * console.log(key); + * }); + * // => Logs 'a', 'b', then 'c' (iteration order is not guaranteed). + */ + function forIn(object, iteratee) { + return object == null + ? object + : baseFor(object, getIteratee(iteratee, 3), keysIn); + } + + /** + * This method is like `_.forIn` except that it iterates over properties of + * `object` in the opposite order. + * + * @static + * @memberOf _ + * @since 2.0.0 + * @category Object + * @param {Object} object The object to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @returns {Object} Returns `object`. + * @see _.forIn + * @example + * + * function Foo() { + * this.a = 1; + * this.b = 2; + * } + * + * Foo.prototype.c = 3; + * + * _.forInRight(new Foo, function(value, key) { + * console.log(key); + * }); + * // => Logs 'c', 'b', then 'a' assuming `_.forIn` logs 'a', 'b', then 'c'. + */ + function forInRight(object, iteratee) { + return object == null + ? object + : baseForRight(object, getIteratee(iteratee, 3), keysIn); + } + + /** + * Iterates over own enumerable string keyed properties of an object and + * invokes `iteratee` for each property. The iteratee is invoked with three + * arguments: (value, key, object). Iteratee functions may exit iteration + * early by explicitly returning `false`. + * + * @static + * @memberOf _ + * @since 0.3.0 + * @category Object + * @param {Object} object The object to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @returns {Object} Returns `object`. + * @see _.forOwnRight + * @example + * + * function Foo() { + * this.a = 1; + * this.b = 2; + * } + * + * Foo.prototype.c = 3; + * + * _.forOwn(new Foo, function(value, key) { + * console.log(key); + * }); + * // => Logs 'a' then 'b' (iteration order is not guaranteed). + */ + function forOwn(object, iteratee) { + return object && baseForOwn(object, getIteratee(iteratee, 3)); + } + + /** + * This method is like `_.forOwn` except that it iterates over properties of + * `object` in the opposite order. + * + * @static + * @memberOf _ + * @since 2.0.0 + * @category Object + * @param {Object} object The object to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @returns {Object} Returns `object`. + * @see _.forOwn + * @example + * + * function Foo() { + * this.a = 1; + * this.b = 2; + * } + * + * Foo.prototype.c = 3; + * + * _.forOwnRight(new Foo, function(value, key) { + * console.log(key); + * }); + * // => Logs 'b' then 'a' assuming `_.forOwn` logs 'a' then 'b'. + */ + function forOwnRight(object, iteratee) { + return object && baseForOwnRight(object, getIteratee(iteratee, 3)); + } + + /** + * Creates an array of function property names from own enumerable properties + * of `object`. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Object + * @param {Object} object The object to inspect. + * @returns {Array} Returns the function names. + * @see _.functionsIn + * @example + * + * function Foo() { + * this.a = _.constant('a'); + * this.b = _.constant('b'); + * } + * + * Foo.prototype.c = _.constant('c'); + * + * _.functions(new Foo); + * // => ['a', 'b'] + */ + function functions(object) { + return object == null ? [] : baseFunctions(object, keys(object)); + } + + /** + * Creates an array of function property names from own and inherited + * enumerable properties of `object`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Object + * @param {Object} object The object to inspect. + * @returns {Array} Returns the function names. + * @see _.functions + * @example + * + * function Foo() { + * this.a = _.constant('a'); + * this.b = _.constant('b'); + * } + * + * Foo.prototype.c = _.constant('c'); + * + * _.functionsIn(new Foo); + * // => ['a', 'b', 'c'] + */ + function functionsIn(object) { + return object == null ? [] : baseFunctions(object, keysIn(object)); + } + + /** + * Gets the value at `path` of `object`. If the resolved value is + * `undefined`, the `defaultValue` is returned in its place. + * + * @static + * @memberOf _ + * @since 3.7.0 + * @category Object + * @param {Object} object The object to query. + * @param {Array|string} path The path of the property to get. + * @param {*} [defaultValue] The value returned for `undefined` resolved values. + * @returns {*} Returns the resolved value. + * @example + * + * var object = { 'a': [{ 'b': { 'c': 3 } }] }; + * + * _.get(object, 'a[0].b.c'); + * // => 3 + * + * _.get(object, ['a', '0', 'b', 'c']); + * // => 3 + * + * _.get(object, 'a.b.c', 'default'); + * // => 'default' + */ + function get(object, path, defaultValue) { + var result = object == null ? undefined : baseGet(object, path); + return result === undefined ? defaultValue : result; + } + + /** + * Checks if `path` is a direct property of `object`. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Object + * @param {Object} object The object to query. + * @param {Array|string} path The path to check. + * @returns {boolean} Returns `true` if `path` exists, else `false`. + * @example + * + * var object = { 'a': { 'b': 2 } }; + * var other = _.create({ 'a': _.create({ 'b': 2 }) }); + * + * _.has(object, 'a'); + * // => true + * + * _.has(object, 'a.b'); + * // => true + * + * _.has(object, ['a', 'b']); + * // => true + * + * _.has(other, 'a'); + * // => false + */ + function has(object, path) { + return object != null && hasPath(object, path, baseHas); + } + + /** + * Checks if `path` is a direct or inherited property of `object`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Object + * @param {Object} object The object to query. + * @param {Array|string} path The path to check. + * @returns {boolean} Returns `true` if `path` exists, else `false`. + * @example + * + * var object = _.create({ 'a': _.create({ 'b': 2 }) }); + * + * _.hasIn(object, 'a'); + * // => true + * + * _.hasIn(object, 'a.b'); + * // => true + * + * _.hasIn(object, ['a', 'b']); + * // => true + * + * _.hasIn(object, 'b'); + * // => false + */ + function hasIn(object, path) { + return object != null && hasPath(object, path, baseHasIn); + } + + /** + * Creates an object composed of the inverted keys and values of `object`. + * If `object` contains duplicate values, subsequent values overwrite + * property assignments of previous values. + * + * @static + * @memberOf _ + * @since 0.7.0 + * @category Object + * @param {Object} object The object to invert. + * @returns {Object} Returns the new inverted object. + * @example + * + * var object = { 'a': 1, 'b': 2, 'c': 1 }; + * + * _.invert(object); + * // => { '1': 'c', '2': 'b' } + */ + var invert = createInverter(function(result, value, key) { + if (value != null && + typeof value.toString != 'function') { + value = nativeObjectToString.call(value); + } + + result[value] = key; + }, constant(identity)); + + /** + * This method is like `_.invert` except that the inverted object is generated + * from the results of running each element of `object` thru `iteratee`. The + * corresponding inverted value of each inverted key is an array of keys + * responsible for generating the inverted value. The iteratee is invoked + * with one argument: (value). + * + * @static + * @memberOf _ + * @since 4.1.0 + * @category Object + * @param {Object} object The object to invert. + * @param {Function} [iteratee=_.identity] The iteratee invoked per element. + * @returns {Object} Returns the new inverted object. + * @example + * + * var object = { 'a': 1, 'b': 2, 'c': 1 }; + * + * _.invertBy(object); + * // => { '1': ['a', 'c'], '2': ['b'] } + * + * _.invertBy(object, function(value) { + * return 'group' + value; + * }); + * // => { 'group1': ['a', 'c'], 'group2': ['b'] } + */ + var invertBy = createInverter(function(result, value, key) { + if (value != null && + typeof value.toString != 'function') { + value = nativeObjectToString.call(value); + } + + if (hasOwnProperty.call(result, value)) { + result[value].push(key); + } else { + result[value] = [key]; + } + }, getIteratee); + + /** + * Invokes the method at `path` of `object`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Object + * @param {Object} object The object to query. + * @param {Array|string} path The path of the method to invoke. + * @param {...*} [args] The arguments to invoke the method with. + * @returns {*} Returns the result of the invoked method. + * @example + * + * var object = { 'a': [{ 'b': { 'c': [1, 2, 3, 4] } }] }; + * + * _.invoke(object, 'a[0].b.c.slice', 1, 3); + * // => [2, 3] + */ + var invoke = baseRest(baseInvoke); + + /** + * Creates an array of the own enumerable property names of `object`. + * + * **Note:** Non-object values are coerced to objects. See the + * [ES spec](http://ecma-international.org/ecma-262/7.0/#sec-object.keys) + * for more details. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Object + * @param {Object} object The object to query. + * @returns {Array} Returns the array of property names. + * @example + * + * function Foo() { + * this.a = 1; + * this.b = 2; + * } + * + * Foo.prototype.c = 3; + * + * _.keys(new Foo); + * // => ['a', 'b'] (iteration order is not guaranteed) + * + * _.keys('hi'); + * // => ['0', '1'] + */ + function keys(object) { + return isArrayLike(object) ? arrayLikeKeys(object) : baseKeys(object); + } + + /** + * Creates an array of the own and inherited enumerable property names of `object`. + * + * **Note:** Non-object values are coerced to objects. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Object + * @param {Object} object The object to query. + * @returns {Array} Returns the array of property names. + * @example + * + * function Foo() { + * this.a = 1; + * this.b = 2; + * } + * + * Foo.prototype.c = 3; + * + * _.keysIn(new Foo); + * // => ['a', 'b', 'c'] (iteration order is not guaranteed) + */ + function keysIn(object) { + return isArrayLike(object) ? arrayLikeKeys(object, true) : baseKeysIn(object); + } + + /** + * The opposite of `_.mapValues`; this method creates an object with the + * same values as `object` and keys generated by running each own enumerable + * string keyed property of `object` thru `iteratee`. The iteratee is invoked + * with three arguments: (value, key, object). + * + * @static + * @memberOf _ + * @since 3.8.0 + * @category Object + * @param {Object} object The object to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @returns {Object} Returns the new mapped object. + * @see _.mapValues + * @example + * + * _.mapKeys({ 'a': 1, 'b': 2 }, function(value, key) { + * return key + value; + * }); + * // => { 'a1': 1, 'b2': 2 } + */ + function mapKeys(object, iteratee) { + var result = {}; + iteratee = getIteratee(iteratee, 3); + + baseForOwn(object, function(value, key, object) { + baseAssignValue(result, iteratee(value, key, object), value); + }); + return result; + } + + /** + * Creates an object with the same keys as `object` and values generated + * by running each own enumerable string keyed property of `object` thru + * `iteratee`. The iteratee is invoked with three arguments: + * (value, key, object). + * + * @static + * @memberOf _ + * @since 2.4.0 + * @category Object + * @param {Object} object The object to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @returns {Object} Returns the new mapped object. + * @see _.mapKeys + * @example + * + * var users = { + * 'fred': { 'user': 'fred', 'age': 40 }, + * 'pebbles': { 'user': 'pebbles', 'age': 1 } + * }; + * + * _.mapValues(users, function(o) { return o.age; }); + * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed) + * + * // The `_.property` iteratee shorthand. + * _.mapValues(users, 'age'); + * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed) + */ + function mapValues(object, iteratee) { + var result = {}; + iteratee = getIteratee(iteratee, 3); + + baseForOwn(object, function(value, key, object) { + baseAssignValue(result, key, iteratee(value, key, object)); + }); + return result; + } + + /** + * This method is like `_.assign` except that it recursively merges own and + * inherited enumerable string keyed properties of source objects into the + * destination object. Source properties that resolve to `undefined` are + * skipped if a destination value exists. Array and plain object properties + * are merged recursively. Other objects and value types are overridden by + * assignment. Source objects are applied from left to right. Subsequent + * sources overwrite property assignments of previous sources. + * + * **Note:** This method mutates `object`. + * + * @static + * @memberOf _ + * @since 0.5.0 + * @category Object + * @param {Object} object The destination object. + * @param {...Object} [sources] The source objects. + * @returns {Object} Returns `object`. + * @example + * + * var object = { + * 'a': [{ 'b': 2 }, { 'd': 4 }] + * }; + * + * var other = { + * 'a': [{ 'c': 3 }, { 'e': 5 }] + * }; + * + * _.merge(object, other); + * // => { 'a': [{ 'b': 2, 'c': 3 }, { 'd': 4, 'e': 5 }] } + */ + var merge = createAssigner(function(object, source, srcIndex) { + baseMerge(object, source, srcIndex); + }); + + /** + * This method is like `_.merge` except that it accepts `customizer` which + * is invoked to produce the merged values of the destination and source + * properties. If `customizer` returns `undefined`, merging is handled by the + * method instead. The `customizer` is invoked with six arguments: + * (objValue, srcValue, key, object, source, stack). + * + * **Note:** This method mutates `object`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Object + * @param {Object} object The destination object. + * @param {...Object} sources The source objects. + * @param {Function} customizer The function to customize assigned values. + * @returns {Object} Returns `object`. + * @example + * + * function customizer(objValue, srcValue) { + * if (_.isArray(objValue)) { + * return objValue.concat(srcValue); + * } + * } + * + * var object = { 'a': [1], 'b': [2] }; + * var other = { 'a': [3], 'b': [4] }; + * + * _.mergeWith(object, other, customizer); + * // => { 'a': [1, 3], 'b': [2, 4] } + */ + var mergeWith = createAssigner(function(object, source, srcIndex, customizer) { + baseMerge(object, source, srcIndex, customizer); + }); + + /** + * The opposite of `_.pick`; this method creates an object composed of the + * own and inherited enumerable property paths of `object` that are not omitted. + * + * **Note:** This method is considerably slower than `_.pick`. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Object + * @param {Object} object The source object. + * @param {...(string|string[])} [paths] The property paths to omit. + * @returns {Object} Returns the new object. + * @example + * + * var object = { 'a': 1, 'b': '2', 'c': 3 }; + * + * _.omit(object, ['a', 'c']); + * // => { 'b': '2' } + */ + var omit = flatRest(function(object, paths) { + var result = {}; + if (object == null) { + return result; + } + var isDeep = false; + paths = arrayMap(paths, function(path) { + path = castPath(path, object); + isDeep || (isDeep = path.length > 1); + return path; + }); + copyObject(object, getAllKeysIn(object), result); + if (isDeep) { + result = baseClone(result, CLONE_DEEP_FLAG | CLONE_FLAT_FLAG | CLONE_SYMBOLS_FLAG, customOmitClone); + } + var length = paths.length; + while (length--) { + baseUnset(result, paths[length]); + } + return result; + }); + + /** + * The opposite of `_.pickBy`; this method creates an object composed of + * the own and inherited enumerable string keyed properties of `object` that + * `predicate` doesn't return truthy for. The predicate is invoked with two + * arguments: (value, key). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Object + * @param {Object} object The source object. + * @param {Function} [predicate=_.identity] The function invoked per property. + * @returns {Object} Returns the new object. + * @example + * + * var object = { 'a': 1, 'b': '2', 'c': 3 }; + * + * _.omitBy(object, _.isNumber); + * // => { 'b': '2' } + */ + function omitBy(object, predicate) { + return pickBy(object, negate(getIteratee(predicate))); + } + + /** + * Creates an object composed of the picked `object` properties. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Object + * @param {Object} object The source object. + * @param {...(string|string[])} [paths] The property paths to pick. + * @returns {Object} Returns the new object. + * @example + * + * var object = { 'a': 1, 'b': '2', 'c': 3 }; + * + * _.pick(object, ['a', 'c']); + * // => { 'a': 1, 'c': 3 } + */ + var pick = flatRest(function(object, paths) { + return object == null ? {} : basePick(object, paths); + }); + + /** + * Creates an object composed of the `object` properties `predicate` returns + * truthy for. The predicate is invoked with two arguments: (value, key). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Object + * @param {Object} object The source object. + * @param {Function} [predicate=_.identity] The function invoked per property. + * @returns {Object} Returns the new object. + * @example + * + * var object = { 'a': 1, 'b': '2', 'c': 3 }; + * + * _.pickBy(object, _.isNumber); + * // => { 'a': 1, 'c': 3 } + */ + function pickBy(object, predicate) { + if (object == null) { + return {}; + } + var props = arrayMap(getAllKeysIn(object), function(prop) { + return [prop]; + }); + predicate = getIteratee(predicate); + return basePickBy(object, props, function(value, path) { + return predicate(value, path[0]); + }); + } + + /** + * This method is like `_.get` except that if the resolved value is a + * function it's invoked with the `this` binding of its parent object and + * its result is returned. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Object + * @param {Object} object The object to query. + * @param {Array|string} path The path of the property to resolve. + * @param {*} [defaultValue] The value returned for `undefined` resolved values. + * @returns {*} Returns the resolved value. + * @example + * + * var object = { 'a': [{ 'b': { 'c1': 3, 'c2': _.constant(4) } }] }; + * + * _.result(object, 'a[0].b.c1'); + * // => 3 + * + * _.result(object, 'a[0].b.c2'); + * // => 4 + * + * _.result(object, 'a[0].b.c3', 'default'); + * // => 'default' + * + * _.result(object, 'a[0].b.c3', _.constant('default')); + * // => 'default' + */ + function result(object, path, defaultValue) { + path = castPath(path, object); + + var index = -1, + length = path.length; + + // Ensure the loop is entered when path is empty. + if (!length) { + length = 1; + object = undefined; + } + while (++index < length) { + var value = object == null ? undefined : object[toKey(path[index])]; + if (value === undefined) { + index = length; + value = defaultValue; + } + object = isFunction(value) ? value.call(object) : value; + } + return object; + } + + /** + * Sets the value at `path` of `object`. If a portion of `path` doesn't exist, + * it's created. Arrays are created for missing index properties while objects + * are created for all other missing properties. Use `_.setWith` to customize + * `path` creation. + * + * **Note:** This method mutates `object`. + * + * @static + * @memberOf _ + * @since 3.7.0 + * @category Object + * @param {Object} object The object to modify. + * @param {Array|string} path The path of the property to set. + * @param {*} value The value to set. + * @returns {Object} Returns `object`. + * @example + * + * var object = { 'a': [{ 'b': { 'c': 3 } }] }; + * + * _.set(object, 'a[0].b.c', 4); + * console.log(object.a[0].b.c); + * // => 4 + * + * _.set(object, ['x', '0', 'y', 'z'], 5); + * console.log(object.x[0].y.z); + * // => 5 + */ + function set(object, path, value) { + return object == null ? object : baseSet(object, path, value); + } + + /** + * This method is like `_.set` except that it accepts `customizer` which is + * invoked to produce the objects of `path`. If `customizer` returns `undefined` + * path creation is handled by the method instead. The `customizer` is invoked + * with three arguments: (nsValue, key, nsObject). + * + * **Note:** This method mutates `object`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Object + * @param {Object} object The object to modify. + * @param {Array|string} path The path of the property to set. + * @param {*} value The value to set. + * @param {Function} [customizer] The function to customize assigned values. + * @returns {Object} Returns `object`. + * @example + * + * var object = {}; + * + * _.setWith(object, '[0][1]', 'a', Object); + * // => { '0': { '1': 'a' } } + */ + function setWith(object, path, value, customizer) { + customizer = typeof customizer == 'function' ? customizer : undefined; + return object == null ? object : baseSet(object, path, value, customizer); + } + + /** + * Creates an array of own enumerable string keyed-value pairs for `object` + * which can be consumed by `_.fromPairs`. If `object` is a map or set, its + * entries are returned. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @alias entries + * @category Object + * @param {Object} object The object to query. + * @returns {Array} Returns the key-value pairs. + * @example + * + * function Foo() { + * this.a = 1; + * this.b = 2; + * } + * + * Foo.prototype.c = 3; + * + * _.toPairs(new Foo); + * // => [['a', 1], ['b', 2]] (iteration order is not guaranteed) + */ + var toPairs = createToPairs(keys); + + /** + * Creates an array of own and inherited enumerable string keyed-value pairs + * for `object` which can be consumed by `_.fromPairs`. If `object` is a map + * or set, its entries are returned. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @alias entriesIn + * @category Object + * @param {Object} object The object to query. + * @returns {Array} Returns the key-value pairs. + * @example + * + * function Foo() { + * this.a = 1; + * this.b = 2; + * } + * + * Foo.prototype.c = 3; + * + * _.toPairsIn(new Foo); + * // => [['a', 1], ['b', 2], ['c', 3]] (iteration order is not guaranteed) + */ + var toPairsIn = createToPairs(keysIn); + + /** + * An alternative to `_.reduce`; this method transforms `object` to a new + * `accumulator` object which is the result of running each of its own + * enumerable string keyed properties thru `iteratee`, with each invocation + * potentially mutating the `accumulator` object. If `accumulator` is not + * provided, a new object with the same `[[Prototype]]` will be used. The + * iteratee is invoked with four arguments: (accumulator, value, key, object). + * Iteratee functions may exit iteration early by explicitly returning `false`. + * + * @static + * @memberOf _ + * @since 1.3.0 + * @category Object + * @param {Object} object The object to iterate over. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @param {*} [accumulator] The custom accumulator value. + * @returns {*} Returns the accumulated value. + * @example + * + * _.transform([2, 3, 4], function(result, n) { + * result.push(n *= n); + * return n % 2 == 0; + * }, []); + * // => [4, 9] + * + * _.transform({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) { + * (result[value] || (result[value] = [])).push(key); + * }, {}); + * // => { '1': ['a', 'c'], '2': ['b'] } + */ + function transform(object, iteratee, accumulator) { + var isArr = isArray(object), + isArrLike = isArr || isBuffer(object) || isTypedArray(object); + + iteratee = getIteratee(iteratee, 4); + if (accumulator == null) { + var Ctor = object && object.constructor; + if (isArrLike) { + accumulator = isArr ? new Ctor : []; + } + else if (isObject(object)) { + accumulator = isFunction(Ctor) ? baseCreate(getPrototype(object)) : {}; + } + else { + accumulator = {}; + } + } + (isArrLike ? arrayEach : baseForOwn)(object, function(value, index, object) { + return iteratee(accumulator, value, index, object); + }); + return accumulator; + } + + /** + * Removes the property at `path` of `object`. + * + * **Note:** This method mutates `object`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Object + * @param {Object} object The object to modify. + * @param {Array|string} path The path of the property to unset. + * @returns {boolean} Returns `true` if the property is deleted, else `false`. + * @example + * + * var object = { 'a': [{ 'b': { 'c': 7 } }] }; + * _.unset(object, 'a[0].b.c'); + * // => true + * + * console.log(object); + * // => { 'a': [{ 'b': {} }] }; + * + * _.unset(object, ['a', '0', 'b', 'c']); + * // => true + * + * console.log(object); + * // => { 'a': [{ 'b': {} }] }; + */ + function unset(object, path) { + return object == null ? true : baseUnset(object, path); + } + + /** + * This method is like `_.set` except that accepts `updater` to produce the + * value to set. Use `_.updateWith` to customize `path` creation. The `updater` + * is invoked with one argument: (value). + * + * **Note:** This method mutates `object`. + * + * @static + * @memberOf _ + * @since 4.6.0 + * @category Object + * @param {Object} object The object to modify. + * @param {Array|string} path The path of the property to set. + * @param {Function} updater The function to produce the updated value. + * @returns {Object} Returns `object`. + * @example + * + * var object = { 'a': [{ 'b': { 'c': 3 } }] }; + * + * _.update(object, 'a[0].b.c', function(n) { return n * n; }); + * console.log(object.a[0].b.c); + * // => 9 + * + * _.update(object, 'x[0].y.z', function(n) { return n ? n + 1 : 0; }); + * console.log(object.x[0].y.z); + * // => 0 + */ + function update(object, path, updater) { + return object == null ? object : baseUpdate(object, path, castFunction(updater)); + } + + /** + * This method is like `_.update` except that it accepts `customizer` which is + * invoked to produce the objects of `path`. If `customizer` returns `undefined` + * path creation is handled by the method instead. The `customizer` is invoked + * with three arguments: (nsValue, key, nsObject). + * + * **Note:** This method mutates `object`. + * + * @static + * @memberOf _ + * @since 4.6.0 + * @category Object + * @param {Object} object The object to modify. + * @param {Array|string} path The path of the property to set. + * @param {Function} updater The function to produce the updated value. + * @param {Function} [customizer] The function to customize assigned values. + * @returns {Object} Returns `object`. + * @example + * + * var object = {}; + * + * _.updateWith(object, '[0][1]', _.constant('a'), Object); + * // => { '0': { '1': 'a' } } + */ + function updateWith(object, path, updater, customizer) { + customizer = typeof customizer == 'function' ? customizer : undefined; + return object == null ? object : baseUpdate(object, path, castFunction(updater), customizer); + } + + /** + * Creates an array of the own enumerable string keyed property values of `object`. + * + * **Note:** Non-object values are coerced to objects. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Object + * @param {Object} object The object to query. + * @returns {Array} Returns the array of property values. + * @example + * + * function Foo() { + * this.a = 1; + * this.b = 2; + * } + * + * Foo.prototype.c = 3; + * + * _.values(new Foo); + * // => [1, 2] (iteration order is not guaranteed) + * + * _.values('hi'); + * // => ['h', 'i'] + */ + function values(object) { + return object == null ? [] : baseValues(object, keys(object)); + } + + /** + * Creates an array of the own and inherited enumerable string keyed property + * values of `object`. + * + * **Note:** Non-object values are coerced to objects. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Object + * @param {Object} object The object to query. + * @returns {Array} Returns the array of property values. + * @example + * + * function Foo() { + * this.a = 1; + * this.b = 2; + * } + * + * Foo.prototype.c = 3; + * + * _.valuesIn(new Foo); + * // => [1, 2, 3] (iteration order is not guaranteed) + */ + function valuesIn(object) { + return object == null ? [] : baseValues(object, keysIn(object)); + } + + /*------------------------------------------------------------------------*/ + + /** + * Clamps `number` within the inclusive `lower` and `upper` bounds. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Number + * @param {number} number The number to clamp. + * @param {number} [lower] The lower bound. + * @param {number} upper The upper bound. + * @returns {number} Returns the clamped number. + * @example + * + * _.clamp(-10, -5, 5); + * // => -5 + * + * _.clamp(10, -5, 5); + * // => 5 + */ + function clamp(number, lower, upper) { + if (upper === undefined) { + upper = lower; + lower = undefined; + } + if (upper !== undefined) { + upper = toNumber(upper); + upper = upper === upper ? upper : 0; + } + if (lower !== undefined) { + lower = toNumber(lower); + lower = lower === lower ? lower : 0; + } + return baseClamp(toNumber(number), lower, upper); + } + + /** + * Checks if `n` is between `start` and up to, but not including, `end`. If + * `end` is not specified, it's set to `start` with `start` then set to `0`. + * If `start` is greater than `end` the params are swapped to support + * negative ranges. + * + * @static + * @memberOf _ + * @since 3.3.0 + * @category Number + * @param {number} number The number to check. + * @param {number} [start=0] The start of the range. + * @param {number} end The end of the range. + * @returns {boolean} Returns `true` if `number` is in the range, else `false`. + * @see _.range, _.rangeRight + * @example + * + * _.inRange(3, 2, 4); + * // => true + * + * _.inRange(4, 8); + * // => true + * + * _.inRange(4, 2); + * // => false + * + * _.inRange(2, 2); + * // => false + * + * _.inRange(1.2, 2); + * // => true + * + * _.inRange(5.2, 4); + * // => false + * + * _.inRange(-3, -2, -6); + * // => true + */ + function inRange(number, start, end) { + start = toFinite(start); + if (end === undefined) { + end = start; + start = 0; + } else { + end = toFinite(end); + } + number = toNumber(number); + return baseInRange(number, start, end); + } + + /** + * Produces a random number between the inclusive `lower` and `upper` bounds. + * If only one argument is provided a number between `0` and the given number + * is returned. If `floating` is `true`, or either `lower` or `upper` are + * floats, a floating-point number is returned instead of an integer. + * + * **Note:** JavaScript follows the IEEE-754 standard for resolving + * floating-point values which can produce unexpected results. + * + * @static + * @memberOf _ + * @since 0.7.0 + * @category Number + * @param {number} [lower=0] The lower bound. + * @param {number} [upper=1] The upper bound. + * @param {boolean} [floating] Specify returning a floating-point number. + * @returns {number} Returns the random number. + * @example + * + * _.random(0, 5); + * // => an integer between 0 and 5 + * + * _.random(5); + * // => also an integer between 0 and 5 + * + * _.random(5, true); + * // => a floating-point number between 0 and 5 + * + * _.random(1.2, 5.2); + * // => a floating-point number between 1.2 and 5.2 + */ + function random(lower, upper, floating) { + if (floating && typeof floating != 'boolean' && isIterateeCall(lower, upper, floating)) { + upper = floating = undefined; + } + if (floating === undefined) { + if (typeof upper == 'boolean') { + floating = upper; + upper = undefined; + } + else if (typeof lower == 'boolean') { + floating = lower; + lower = undefined; + } + } + if (lower === undefined && upper === undefined) { + lower = 0; + upper = 1; + } + else { + lower = toFinite(lower); + if (upper === undefined) { + upper = lower; + lower = 0; + } else { + upper = toFinite(upper); + } + } + if (lower > upper) { + var temp = lower; + lower = upper; + upper = temp; + } + if (floating || lower % 1 || upper % 1) { + var rand = nativeRandom(); + return nativeMin(lower + (rand * (upper - lower + freeParseFloat('1e-' + ((rand + '').length - 1)))), upper); + } + return baseRandom(lower, upper); + } + + /*------------------------------------------------------------------------*/ + + /** + * Converts `string` to [camel case](https://en.wikipedia.org/wiki/CamelCase). + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category String + * @param {string} [string=''] The string to convert. + * @returns {string} Returns the camel cased string. + * @example + * + * _.camelCase('Foo Bar'); + * // => 'fooBar' + * + * _.camelCase('--foo-bar--'); + * // => 'fooBar' + * + * _.camelCase('__FOO_BAR__'); + * // => 'fooBar' + */ + var camelCase = createCompounder(function(result, word, index) { + word = word.toLowerCase(); + return result + (index ? capitalize(word) : word); + }); + + /** + * Converts the first character of `string` to upper case and the remaining + * to lower case. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category String + * @param {string} [string=''] The string to capitalize. + * @returns {string} Returns the capitalized string. + * @example + * + * _.capitalize('FRED'); + * // => 'Fred' + */ + function capitalize(string) { + return upperFirst(toString(string).toLowerCase()); + } + + /** + * Deburrs `string` by converting + * [Latin-1 Supplement](https://en.wikipedia.org/wiki/Latin-1_Supplement_(Unicode_block)#Character_table) + * and [Latin Extended-A](https://en.wikipedia.org/wiki/Latin_Extended-A) + * letters to basic Latin letters and removing + * [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks). + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category String + * @param {string} [string=''] The string to deburr. + * @returns {string} Returns the deburred string. + * @example + * + * _.deburr('déjà vu'); + * // => 'deja vu' + */ + function deburr(string) { + string = toString(string); + return string && string.replace(reLatin, deburrLetter).replace(reComboMark, ''); + } + + /** + * Checks if `string` ends with the given target string. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category String + * @param {string} [string=''] The string to inspect. + * @param {string} [target] The string to search for. + * @param {number} [position=string.length] The position to search up to. + * @returns {boolean} Returns `true` if `string` ends with `target`, + * else `false`. + * @example + * + * _.endsWith('abc', 'c'); + * // => true + * + * _.endsWith('abc', 'b'); + * // => false + * + * _.endsWith('abc', 'b', 2); + * // => true + */ + function endsWith(string, target, position) { + string = toString(string); + target = baseToString(target); + + var length = string.length; + position = position === undefined + ? length + : baseClamp(toInteger(position), 0, length); + + var end = position; + position -= target.length; + return position >= 0 && string.slice(position, end) == target; + } + + /** + * Converts the characters "&", "<", ">", '"', and "'" in `string` to their + * corresponding HTML entities. + * + * **Note:** No other characters are escaped. To escape additional + * characters use a third-party library like [_he_](https://mths.be/he). + * + * Though the ">" character is escaped for symmetry, characters like + * ">" and "/" don't need escaping in HTML and have no special meaning + * unless they're part of a tag or unquoted attribute value. See + * [Mathias Bynens's article](https://mathiasbynens.be/notes/ambiguous-ampersands) + * (under "semi-related fun fact") for more details. + * + * When working with HTML you should always + * [quote attribute values](http://wonko.com/post/html-escaping) to reduce + * XSS vectors. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category String + * @param {string} [string=''] The string to escape. + * @returns {string} Returns the escaped string. + * @example + * + * _.escape('fred, barney, & pebbles'); + * // => 'fred, barney, & pebbles' + */ + function escape(string) { + string = toString(string); + return (string && reHasUnescapedHtml.test(string)) + ? string.replace(reUnescapedHtml, escapeHtmlChar) + : string; + } + + /** + * Escapes the `RegExp` special characters "^", "$", "\", ".", "*", "+", + * "?", "(", ")", "[", "]", "{", "}", and "|" in `string`. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category String + * @param {string} [string=''] The string to escape. + * @returns {string} Returns the escaped string. + * @example + * + * _.escapeRegExp('[lodash](https://lodash.com/)'); + * // => '\[lodash\]\(https://lodash\.com/\)' + */ + function escapeRegExp(string) { + string = toString(string); + return (string && reHasRegExpChar.test(string)) + ? string.replace(reRegExpChar, '\\$&') + : string; + } + + /** + * Converts `string` to + * [kebab case](https://en.wikipedia.org/wiki/Letter_case#Special_case_styles). + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category String + * @param {string} [string=''] The string to convert. + * @returns {string} Returns the kebab cased string. + * @example + * + * _.kebabCase('Foo Bar'); + * // => 'foo-bar' + * + * _.kebabCase('fooBar'); + * // => 'foo-bar' + * + * _.kebabCase('__FOO_BAR__'); + * // => 'foo-bar' + */ + var kebabCase = createCompounder(function(result, word, index) { + return result + (index ? '-' : '') + word.toLowerCase(); + }); + + /** + * Converts `string`, as space separated words, to lower case. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category String + * @param {string} [string=''] The string to convert. + * @returns {string} Returns the lower cased string. + * @example + * + * _.lowerCase('--Foo-Bar--'); + * // => 'foo bar' + * + * _.lowerCase('fooBar'); + * // => 'foo bar' + * + * _.lowerCase('__FOO_BAR__'); + * // => 'foo bar' + */ + var lowerCase = createCompounder(function(result, word, index) { + return result + (index ? ' ' : '') + word.toLowerCase(); + }); + + /** + * Converts the first character of `string` to lower case. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category String + * @param {string} [string=''] The string to convert. + * @returns {string} Returns the converted string. + * @example + * + * _.lowerFirst('Fred'); + * // => 'fred' + * + * _.lowerFirst('FRED'); + * // => 'fRED' + */ + var lowerFirst = createCaseFirst('toLowerCase'); + + /** + * Pads `string` on the left and right sides if it's shorter than `length`. + * Padding characters are truncated if they can't be evenly divided by `length`. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category String + * @param {string} [string=''] The string to pad. + * @param {number} [length=0] The padding length. + * @param {string} [chars=' '] The string used as padding. + * @returns {string} Returns the padded string. + * @example + * + * _.pad('abc', 8); + * // => ' abc ' + * + * _.pad('abc', 8, '_-'); + * // => '_-abc_-_' + * + * _.pad('abc', 3); + * // => 'abc' + */ + function pad(string, length, chars) { + string = toString(string); + length = toInteger(length); + + var strLength = length ? stringSize(string) : 0; + if (!length || strLength >= length) { + return string; + } + var mid = (length - strLength) / 2; + return ( + createPadding(nativeFloor(mid), chars) + + string + + createPadding(nativeCeil(mid), chars) + ); + } + + /** + * Pads `string` on the right side if it's shorter than `length`. Padding + * characters are truncated if they exceed `length`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category String + * @param {string} [string=''] The string to pad. + * @param {number} [length=0] The padding length. + * @param {string} [chars=' '] The string used as padding. + * @returns {string} Returns the padded string. + * @example + * + * _.padEnd('abc', 6); + * // => 'abc ' + * + * _.padEnd('abc', 6, '_-'); + * // => 'abc_-_' + * + * _.padEnd('abc', 3); + * // => 'abc' + */ + function padEnd(string, length, chars) { + string = toString(string); + length = toInteger(length); + + var strLength = length ? stringSize(string) : 0; + return (length && strLength < length) + ? (string + createPadding(length - strLength, chars)) + : string; + } + + /** + * Pads `string` on the left side if it's shorter than `length`. Padding + * characters are truncated if they exceed `length`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category String + * @param {string} [string=''] The string to pad. + * @param {number} [length=0] The padding length. + * @param {string} [chars=' '] The string used as padding. + * @returns {string} Returns the padded string. + * @example + * + * _.padStart('abc', 6); + * // => ' abc' + * + * _.padStart('abc', 6, '_-'); + * // => '_-_abc' + * + * _.padStart('abc', 3); + * // => 'abc' + */ + function padStart(string, length, chars) { + string = toString(string); + length = toInteger(length); + + var strLength = length ? stringSize(string) : 0; + return (length && strLength < length) + ? (createPadding(length - strLength, chars) + string) + : string; + } + + /** + * Converts `string` to an integer of the specified radix. If `radix` is + * `undefined` or `0`, a `radix` of `10` is used unless `value` is a + * hexadecimal, in which case a `radix` of `16` is used. + * + * **Note:** This method aligns with the + * [ES5 implementation](https://es5.github.io/#x15.1.2.2) of `parseInt`. + * + * @static + * @memberOf _ + * @since 1.1.0 + * @category String + * @param {string} string The string to convert. + * @param {number} [radix=10] The radix to interpret `value` by. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {number} Returns the converted integer. + * @example + * + * _.parseInt('08'); + * // => 8 + * + * _.map(['6', '08', '10'], _.parseInt); + * // => [6, 8, 10] + */ + function parseInt(string, radix, guard) { + if (guard || radix == null) { + radix = 0; + } else if (radix) { + radix = +radix; + } + return nativeParseInt(toString(string).replace(reTrimStart, ''), radix || 0); + } + + /** + * Repeats the given string `n` times. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category String + * @param {string} [string=''] The string to repeat. + * @param {number} [n=1] The number of times to repeat the string. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {string} Returns the repeated string. + * @example + * + * _.repeat('*', 3); + * // => '***' + * + * _.repeat('abc', 2); + * // => 'abcabc' + * + * _.repeat('abc', 0); + * // => '' + */ + function repeat(string, n, guard) { + if ((guard ? isIterateeCall(string, n, guard) : n === undefined)) { + n = 1; + } else { + n = toInteger(n); + } + return baseRepeat(toString(string), n); + } + + /** + * Replaces matches for `pattern` in `string` with `replacement`. + * + * **Note:** This method is based on + * [`String#replace`](https://mdn.io/String/replace). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category String + * @param {string} [string=''] The string to modify. + * @param {RegExp|string} pattern The pattern to replace. + * @param {Function|string} replacement The match replacement. + * @returns {string} Returns the modified string. + * @example + * + * _.replace('Hi Fred', 'Fred', 'Barney'); + * // => 'Hi Barney' + */ + function replace() { + var args = arguments, + string = toString(args[0]); + + return args.length < 3 ? string : string.replace(args[1], args[2]); + } + + /** + * Converts `string` to + * [snake case](https://en.wikipedia.org/wiki/Snake_case). + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category String + * @param {string} [string=''] The string to convert. + * @returns {string} Returns the snake cased string. + * @example + * + * _.snakeCase('Foo Bar'); + * // => 'foo_bar' + * + * _.snakeCase('fooBar'); + * // => 'foo_bar' + * + * _.snakeCase('--FOO-BAR--'); + * // => 'foo_bar' + */ + var snakeCase = createCompounder(function(result, word, index) { + return result + (index ? '_' : '') + word.toLowerCase(); + }); + + /** + * Splits `string` by `separator`. + * + * **Note:** This method is based on + * [`String#split`](https://mdn.io/String/split). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category String + * @param {string} [string=''] The string to split. + * @param {RegExp|string} separator The separator pattern to split by. + * @param {number} [limit] The length to truncate results to. + * @returns {Array} Returns the string segments. + * @example + * + * _.split('a-b-c', '-', 2); + * // => ['a', 'b'] + */ + function split(string, separator, limit) { + if (limit && typeof limit != 'number' && isIterateeCall(string, separator, limit)) { + separator = limit = undefined; + } + limit = limit === undefined ? MAX_ARRAY_LENGTH : limit >>> 0; + if (!limit) { + return []; + } + string = toString(string); + if (string && ( + typeof separator == 'string' || + (separator != null && !isRegExp(separator)) + )) { + separator = baseToString(separator); + if (!separator && hasUnicode(string)) { + return castSlice(stringToArray(string), 0, limit); + } + } + return string.split(separator, limit); + } + + /** + * Converts `string` to + * [start case](https://en.wikipedia.org/wiki/Letter_case#Stylistic_or_specialised_usage). + * + * @static + * @memberOf _ + * @since 3.1.0 + * @category String + * @param {string} [string=''] The string to convert. + * @returns {string} Returns the start cased string. + * @example + * + * _.startCase('--foo-bar--'); + * // => 'Foo Bar' + * + * _.startCase('fooBar'); + * // => 'Foo Bar' + * + * _.startCase('__FOO_BAR__'); + * // => 'FOO BAR' + */ + var startCase = createCompounder(function(result, word, index) { + return result + (index ? ' ' : '') + upperFirst(word); + }); + + /** + * Checks if `string` starts with the given target string. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category String + * @param {string} [string=''] The string to inspect. + * @param {string} [target] The string to search for. + * @param {number} [position=0] The position to search from. + * @returns {boolean} Returns `true` if `string` starts with `target`, + * else `false`. + * @example + * + * _.startsWith('abc', 'a'); + * // => true + * + * _.startsWith('abc', 'b'); + * // => false + * + * _.startsWith('abc', 'b', 1); + * // => true + */ + function startsWith(string, target, position) { + string = toString(string); + position = position == null + ? 0 + : baseClamp(toInteger(position), 0, string.length); + + target = baseToString(target); + return string.slice(position, position + target.length) == target; + } + + /** + * Creates a compiled template function that can interpolate data properties + * in "interpolate" delimiters, HTML-escape interpolated data properties in + * "escape" delimiters, and execute JavaScript in "evaluate" delimiters. Data + * properties may be accessed as free variables in the template. If a setting + * object is given, it takes precedence over `_.templateSettings` values. + * + * **Note:** In the development build `_.template` utilizes + * [sourceURLs](http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/#toc-sourceurl) + * for easier debugging. + * + * For more information on precompiling templates see + * [lodash's custom builds documentation](https://lodash.com/custom-builds). + * + * For more information on Chrome extension sandboxes see + * [Chrome's extensions documentation](https://developer.chrome.com/extensions/sandboxingEval). + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category String + * @param {string} [string=''] The template string. + * @param {Object} [options={}] The options object. + * @param {RegExp} [options.escape=_.templateSettings.escape] + * The HTML "escape" delimiter. + * @param {RegExp} [options.evaluate=_.templateSettings.evaluate] + * The "evaluate" delimiter. + * @param {Object} [options.imports=_.templateSettings.imports] + * An object to import into the template as free variables. + * @param {RegExp} [options.interpolate=_.templateSettings.interpolate] + * The "interpolate" delimiter. + * @param {string} [options.sourceURL='lodash.templateSources[n]'] + * The sourceURL of the compiled template. + * @param {string} [options.variable='obj'] + * The data object variable name. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {Function} Returns the compiled template function. + * @example + * + * // Use the "interpolate" delimiter to create a compiled template. + * var compiled = _.template('hello <%= user %>!'); + * compiled({ 'user': 'fred' }); + * // => 'hello fred!' + * + * // Use the HTML "escape" delimiter to escape data property values. + * var compiled = _.template('<b><%- value %></b>'); + * compiled({ 'value': '<script>' }); + * // => '<b><script></b>' + * + * // Use the "evaluate" delimiter to execute JavaScript and generate HTML. + * var compiled = _.template('<% _.forEach(users, function(user) { %><li><%- user %></li><% }); %>'); + * compiled({ 'users': ['fred', 'barney'] }); + * // => '<li>fred</li><li>barney</li>' + * + * // Use the internal `print` function in "evaluate" delimiters. + * var compiled = _.template('<% print("hello " + user); %>!'); + * compiled({ 'user': 'barney' }); + * // => 'hello barney!' + * + * // Use the ES template literal delimiter as an "interpolate" delimiter. + * // Disable support by replacing the "interpolate" delimiter. + * var compiled = _.template('hello ${ user }!'); + * compiled({ 'user': 'pebbles' }); + * // => 'hello pebbles!' + * + * // Use backslashes to treat delimiters as plain text. + * var compiled = _.template('<%= "\\<%- value %\\>" %>'); + * compiled({ 'value': 'ignored' }); + * // => '<%- value %>' + * + * // Use the `imports` option to import `jQuery` as `jq`. + * var text = '<% jq.each(users, function(user) { %><li><%- user %></li><% }); %>'; + * var compiled = _.template(text, { 'imports': { 'jq': jQuery } }); + * compiled({ 'users': ['fred', 'barney'] }); + * // => '<li>fred</li><li>barney</li>' + * + * // Use the `sourceURL` option to specify a custom sourceURL for the template. + * var compiled = _.template('hello <%= user %>!', { 'sourceURL': '/basic/greeting.jst' }); + * compiled(data); + * // => Find the source of "greeting.jst" under the Sources tab or Resources panel of the web inspector. + * + * // Use the `variable` option to ensure a with-statement isn't used in the compiled template. + * var compiled = _.template('hi <%= data.user %>!', { 'variable': 'data' }); + * compiled.source; + * // => function(data) { + * // var __t, __p = ''; + * // __p += 'hi ' + ((__t = ( data.user )) == null ? '' : __t) + '!'; + * // return __p; + * // } + * + * // Use custom template delimiters. + * _.templateSettings.interpolate = /{{([\s\S]+?)}}/g; + * var compiled = _.template('hello {{ user }}!'); + * compiled({ 'user': 'mustache' }); + * // => 'hello mustache!' + * + * // Use the `source` property to inline compiled templates for meaningful + * // line numbers in error messages and stack traces. + * fs.writeFileSync(path.join(process.cwd(), 'jst.js'), '\ + * var JST = {\ + * "main": ' + _.template(mainText).source + '\ + * };\ + * '); + */ + function template(string, options, guard) { + // Based on John Resig's `tmpl` implementation + // (http://ejohn.org/blog/javascript-micro-templating/) + // and Laura Doktorova's doT.js (https://github.com/olado/doT). + var settings = lodash.templateSettings; + + if (guard && isIterateeCall(string, options, guard)) { + options = undefined; + } + string = toString(string); + options = assignInWith({}, options, settings, customDefaultsAssignIn); + + var imports = assignInWith({}, options.imports, settings.imports, customDefaultsAssignIn), + importsKeys = keys(imports), + importsValues = baseValues(imports, importsKeys); + + var isEscaping, + isEvaluating, + index = 0, + interpolate = options.interpolate || reNoMatch, + source = "__p += '"; + + // Compile the regexp to match each delimiter. + var reDelimiters = RegExp( + (options.escape || reNoMatch).source + '|' + + interpolate.source + '|' + + (interpolate === reInterpolate ? reEsTemplate : reNoMatch).source + '|' + + (options.evaluate || reNoMatch).source + '|$' + , 'g'); + + // Use a sourceURL for easier debugging. + // The sourceURL gets injected into the source that's eval-ed, so be careful + // with lookup (in case of e.g. prototype pollution), and strip newlines if any. + // A newline wouldn't be a valid sourceURL anyway, and it'd enable code injection. + var sourceURL = '//# sourceURL=' + + (hasOwnProperty.call(options, 'sourceURL') + ? (options.sourceURL + '').replace(/[\r\n]/g, ' ') + : ('lodash.templateSources[' + (++templateCounter) + ']') + ) + '\n'; + + string.replace(reDelimiters, function(match, escapeValue, interpolateValue, esTemplateValue, evaluateValue, offset) { + interpolateValue || (interpolateValue = esTemplateValue); + + // Escape characters that can't be included in string literals. + source += string.slice(index, offset).replace(reUnescapedString, escapeStringChar); + + // Replace delimiters with snippets. + if (escapeValue) { + isEscaping = true; + source += "' +\n__e(" + escapeValue + ") +\n'"; + } + if (evaluateValue) { + isEvaluating = true; + source += "';\n" + evaluateValue + ";\n__p += '"; + } + if (interpolateValue) { + source += "' +\n((__t = (" + interpolateValue + ")) == null ? '' : __t) +\n'"; + } + index = offset + match.length; + + // The JS engine embedded in Adobe products needs `match` returned in + // order to produce the correct `offset` value. + return match; + }); + + source += "';\n"; + + // If `variable` is not specified wrap a with-statement around the generated + // code to add the data object to the top of the scope chain. + // Like with sourceURL, we take care to not check the option's prototype, + // as this configuration is a code injection vector. + var variable = hasOwnProperty.call(options, 'variable') && options.variable; + if (!variable) { + source = 'with (obj) {\n' + source + '\n}\n'; + } + // Cleanup code by stripping empty strings. + source = (isEvaluating ? source.replace(reEmptyStringLeading, '') : source) + .replace(reEmptyStringMiddle, '$1') + .replace(reEmptyStringTrailing, '$1;'); + + // Frame code as the function body. + source = 'function(' + (variable || 'obj') + ') {\n' + + (variable + ? '' + : 'obj || (obj = {});\n' + ) + + "var __t, __p = ''" + + (isEscaping + ? ', __e = _.escape' + : '' + ) + + (isEvaluating + ? ', __j = Array.prototype.join;\n' + + "function print() { __p += __j.call(arguments, '') }\n" + : ';\n' + ) + + source + + 'return __p\n}'; + + var result = attempt(function() { + return Function(importsKeys, sourceURL + 'return ' + source) + .apply(undefined, importsValues); + }); + + // Provide the compiled function's source by its `toString` method or + // the `source` property as a convenience for inlining compiled templates. + result.source = source; + if (isError(result)) { + throw result; + } + return result; + } + + /** + * Converts `string`, as a whole, to lower case just like + * [String#toLowerCase](https://mdn.io/toLowerCase). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category String + * @param {string} [string=''] The string to convert. + * @returns {string} Returns the lower cased string. + * @example + * + * _.toLower('--Foo-Bar--'); + * // => '--foo-bar--' + * + * _.toLower('fooBar'); + * // => 'foobar' + * + * _.toLower('__FOO_BAR__'); + * // => '__foo_bar__' + */ + function toLower(value) { + return toString(value).toLowerCase(); + } + + /** + * Converts `string`, as a whole, to upper case just like + * [String#toUpperCase](https://mdn.io/toUpperCase). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category String + * @param {string} [string=''] The string to convert. + * @returns {string} Returns the upper cased string. + * @example + * + * _.toUpper('--foo-bar--'); + * // => '--FOO-BAR--' + * + * _.toUpper('fooBar'); + * // => 'FOOBAR' + * + * _.toUpper('__foo_bar__'); + * // => '__FOO_BAR__' + */ + function toUpper(value) { + return toString(value).toUpperCase(); + } + + /** + * Removes leading and trailing whitespace or specified characters from `string`. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category String + * @param {string} [string=''] The string to trim. + * @param {string} [chars=whitespace] The characters to trim. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {string} Returns the trimmed string. + * @example + * + * _.trim(' abc '); + * // => 'abc' + * + * _.trim('-_-abc-_-', '_-'); + * // => 'abc' + * + * _.map([' foo ', ' bar '], _.trim); + * // => ['foo', 'bar'] + */ + function trim(string, chars, guard) { + string = toString(string); + if (string && (guard || chars === undefined)) { + return string.replace(reTrim, ''); + } + if (!string || !(chars = baseToString(chars))) { + return string; + } + var strSymbols = stringToArray(string), + chrSymbols = stringToArray(chars), + start = charsStartIndex(strSymbols, chrSymbols), + end = charsEndIndex(strSymbols, chrSymbols) + 1; + + return castSlice(strSymbols, start, end).join(''); + } + + /** + * Removes trailing whitespace or specified characters from `string`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category String + * @param {string} [string=''] The string to trim. + * @param {string} [chars=whitespace] The characters to trim. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {string} Returns the trimmed string. + * @example + * + * _.trimEnd(' abc '); + * // => ' abc' + * + * _.trimEnd('-_-abc-_-', '_-'); + * // => '-_-abc' + */ + function trimEnd(string, chars, guard) { + string = toString(string); + if (string && (guard || chars === undefined)) { + return string.replace(reTrimEnd, ''); + } + if (!string || !(chars = baseToString(chars))) { + return string; + } + var strSymbols = stringToArray(string), + end = charsEndIndex(strSymbols, stringToArray(chars)) + 1; + + return castSlice(strSymbols, 0, end).join(''); + } + + /** + * Removes leading whitespace or specified characters from `string`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category String + * @param {string} [string=''] The string to trim. + * @param {string} [chars=whitespace] The characters to trim. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {string} Returns the trimmed string. + * @example + * + * _.trimStart(' abc '); + * // => 'abc ' + * + * _.trimStart('-_-abc-_-', '_-'); + * // => 'abc-_-' + */ + function trimStart(string, chars, guard) { + string = toString(string); + if (string && (guard || chars === undefined)) { + return string.replace(reTrimStart, ''); + } + if (!string || !(chars = baseToString(chars))) { + return string; + } + var strSymbols = stringToArray(string), + start = charsStartIndex(strSymbols, stringToArray(chars)); + + return castSlice(strSymbols, start).join(''); + } + + /** + * Truncates `string` if it's longer than the given maximum string length. + * The last characters of the truncated string are replaced with the omission + * string which defaults to "...". + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category String + * @param {string} [string=''] The string to truncate. + * @param {Object} [options={}] The options object. + * @param {number} [options.length=30] The maximum string length. + * @param {string} [options.omission='...'] The string to indicate text is omitted. + * @param {RegExp|string} [options.separator] The separator pattern to truncate to. + * @returns {string} Returns the truncated string. + * @example + * + * _.truncate('hi-diddly-ho there, neighborino'); + * // => 'hi-diddly-ho there, neighbo...' + * + * _.truncate('hi-diddly-ho there, neighborino', { + * 'length': 24, + * 'separator': ' ' + * }); + * // => 'hi-diddly-ho there,...' + * + * _.truncate('hi-diddly-ho there, neighborino', { + * 'length': 24, + * 'separator': /,? +/ + * }); + * // => 'hi-diddly-ho there...' + * + * _.truncate('hi-diddly-ho there, neighborino', { + * 'omission': ' [...]' + * }); + * // => 'hi-diddly-ho there, neig [...]' + */ + function truncate(string, options) { + var length = DEFAULT_TRUNC_LENGTH, + omission = DEFAULT_TRUNC_OMISSION; + + if (isObject(options)) { + var separator = 'separator' in options ? options.separator : separator; + length = 'length' in options ? toInteger(options.length) : length; + omission = 'omission' in options ? baseToString(options.omission) : omission; + } + string = toString(string); + + var strLength = string.length; + if (hasUnicode(string)) { + var strSymbols = stringToArray(string); + strLength = strSymbols.length; + } + if (length >= strLength) { + return string; + } + var end = length - stringSize(omission); + if (end < 1) { + return omission; + } + var result = strSymbols + ? castSlice(strSymbols, 0, end).join('') + : string.slice(0, end); + + if (separator === undefined) { + return result + omission; + } + if (strSymbols) { + end += (result.length - end); + } + if (isRegExp(separator)) { + if (string.slice(end).search(separator)) { + var match, + substring = result; + + if (!separator.global) { + separator = RegExp(separator.source, toString(reFlags.exec(separator)) + 'g'); + } + separator.lastIndex = 0; + while ((match = separator.exec(substring))) { + var newEnd = match.index; + } + result = result.slice(0, newEnd === undefined ? end : newEnd); + } + } else if (string.indexOf(baseToString(separator), end) != end) { + var index = result.lastIndexOf(separator); + if (index > -1) { + result = result.slice(0, index); + } + } + return result + omission; + } + + /** + * The inverse of `_.escape`; this method converts the HTML entities + * `&`, `<`, `>`, `"`, and `'` in `string` to + * their corresponding characters. + * + * **Note:** No other HTML entities are unescaped. To unescape additional + * HTML entities use a third-party library like [_he_](https://mths.be/he). + * + * @static + * @memberOf _ + * @since 0.6.0 + * @category String + * @param {string} [string=''] The string to unescape. + * @returns {string} Returns the unescaped string. + * @example + * + * _.unescape('fred, barney, & pebbles'); + * // => 'fred, barney, & pebbles' + */ + function unescape(string) { + string = toString(string); + return (string && reHasEscapedHtml.test(string)) + ? string.replace(reEscapedHtml, unescapeHtmlChar) + : string; + } + + /** + * Converts `string`, as space separated words, to upper case. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category String + * @param {string} [string=''] The string to convert. + * @returns {string} Returns the upper cased string. + * @example + * + * _.upperCase('--foo-bar'); + * // => 'FOO BAR' + * + * _.upperCase('fooBar'); + * // => 'FOO BAR' + * + * _.upperCase('__foo_bar__'); + * // => 'FOO BAR' + */ + var upperCase = createCompounder(function(result, word, index) { + return result + (index ? ' ' : '') + word.toUpperCase(); + }); + + /** + * Converts the first character of `string` to upper case. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category String + * @param {string} [string=''] The string to convert. + * @returns {string} Returns the converted string. + * @example + * + * _.upperFirst('fred'); + * // => 'Fred' + * + * _.upperFirst('FRED'); + * // => 'FRED' + */ + var upperFirst = createCaseFirst('toUpperCase'); + + /** + * Splits `string` into an array of its words. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category String + * @param {string} [string=''] The string to inspect. + * @param {RegExp|string} [pattern] The pattern to match words. + * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`. + * @returns {Array} Returns the words of `string`. + * @example + * + * _.words('fred, barney, & pebbles'); + * // => ['fred', 'barney', 'pebbles'] + * + * _.words('fred, barney, & pebbles', /[^, ]+/g); + * // => ['fred', 'barney', '&', 'pebbles'] + */ + function words(string, pattern, guard) { + string = toString(string); + pattern = guard ? undefined : pattern; + + if (pattern === undefined) { + return hasUnicodeWord(string) ? unicodeWords(string) : asciiWords(string); + } + return string.match(pattern) || []; + } + + /*------------------------------------------------------------------------*/ + + /** + * Attempts to invoke `func`, returning either the result or the caught error + * object. Any additional arguments are provided to `func` when it's invoked. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Util + * @param {Function} func The function to attempt. + * @param {...*} [args] The arguments to invoke `func` with. + * @returns {*} Returns the `func` result or error object. + * @example + * + * // Avoid throwing errors for invalid selectors. + * var elements = _.attempt(function(selector) { + * return document.querySelectorAll(selector); + * }, '>_>'); + * + * if (_.isError(elements)) { + * elements = []; + * } + */ + var attempt = baseRest(function(func, args) { + try { + return apply(func, undefined, args); + } catch (e) { + return isError(e) ? e : new Error(e); + } + }); + + /** + * Binds methods of an object to the object itself, overwriting the existing + * method. + * + * **Note:** This method doesn't set the "length" property of bound functions. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Util + * @param {Object} object The object to bind and assign the bound methods to. + * @param {...(string|string[])} methodNames The object method names to bind. + * @returns {Object} Returns `object`. + * @example + * + * var view = { + * 'label': 'docs', + * 'click': function() { + * console.log('clicked ' + this.label); + * } + * }; + * + * _.bindAll(view, ['click']); + * jQuery(element).on('click', view.click); + * // => Logs 'clicked docs' when clicked. + */ + var bindAll = flatRest(function(object, methodNames) { + arrayEach(methodNames, function(key) { + key = toKey(key); + baseAssignValue(object, key, bind(object[key], object)); + }); + return object; + }); + + /** + * Creates a function that iterates over `pairs` and invokes the corresponding + * function of the first predicate to return truthy. The predicate-function + * pairs are invoked with the `this` binding and arguments of the created + * function. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Util + * @param {Array} pairs The predicate-function pairs. + * @returns {Function} Returns the new composite function. + * @example + * + * var func = _.cond([ + * [_.matches({ 'a': 1 }), _.constant('matches A')], + * [_.conforms({ 'b': _.isNumber }), _.constant('matches B')], + * [_.stubTrue, _.constant('no match')] + * ]); + * + * func({ 'a': 1, 'b': 2 }); + * // => 'matches A' + * + * func({ 'a': 0, 'b': 1 }); + * // => 'matches B' + * + * func({ 'a': '1', 'b': '2' }); + * // => 'no match' + */ + function cond(pairs) { + var length = pairs == null ? 0 : pairs.length, + toIteratee = getIteratee(); + + pairs = !length ? [] : arrayMap(pairs, function(pair) { + if (typeof pair[1] != 'function') { + throw new TypeError(FUNC_ERROR_TEXT); + } + return [toIteratee(pair[0]), pair[1]]; + }); + + return baseRest(function(args) { + var index = -1; + while (++index < length) { + var pair = pairs[index]; + if (apply(pair[0], this, args)) { + return apply(pair[1], this, args); + } + } + }); + } + + /** + * Creates a function that invokes the predicate properties of `source` with + * the corresponding property values of a given object, returning `true` if + * all predicates return truthy, else `false`. + * + * **Note:** The created function is equivalent to `_.conformsTo` with + * `source` partially applied. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Util + * @param {Object} source The object of property predicates to conform to. + * @returns {Function} Returns the new spec function. + * @example + * + * var objects = [ + * { 'a': 2, 'b': 1 }, + * { 'a': 1, 'b': 2 } + * ]; + * + * _.filter(objects, _.conforms({ 'b': function(n) { return n > 1; } })); + * // => [{ 'a': 1, 'b': 2 }] + */ + function conforms(source) { + return baseConforms(baseClone(source, CLONE_DEEP_FLAG)); + } + + /** + * Creates a function that returns `value`. + * + * @static + * @memberOf _ + * @since 2.4.0 + * @category Util + * @param {*} value The value to return from the new function. + * @returns {Function} Returns the new constant function. + * @example + * + * var objects = _.times(2, _.constant({ 'a': 1 })); + * + * console.log(objects); + * // => [{ 'a': 1 }, { 'a': 1 }] + * + * console.log(objects[0] === objects[1]); + * // => true + */ + function constant(value) { + return function() { + return value; + }; + } + + /** + * Checks `value` to determine whether a default value should be returned in + * its place. The `defaultValue` is returned if `value` is `NaN`, `null`, + * or `undefined`. + * + * @static + * @memberOf _ + * @since 4.14.0 + * @category Util + * @param {*} value The value to check. + * @param {*} defaultValue The default value. + * @returns {*} Returns the resolved value. + * @example + * + * _.defaultTo(1, 10); + * // => 1 + * + * _.defaultTo(undefined, 10); + * // => 10 + */ + function defaultTo(value, defaultValue) { + return (value == null || value !== value) ? defaultValue : value; + } + + /** + * Creates a function that returns the result of invoking the given functions + * with the `this` binding of the created function, where each successive + * invocation is supplied the return value of the previous. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Util + * @param {...(Function|Function[])} [funcs] The functions to invoke. + * @returns {Function} Returns the new composite function. + * @see _.flowRight + * @example + * + * function square(n) { + * return n * n; + * } + * + * var addSquare = _.flow([_.add, square]); + * addSquare(1, 2); + * // => 9 + */ + var flow = createFlow(); + + /** + * This method is like `_.flow` except that it creates a function that + * invokes the given functions from right to left. + * + * @static + * @since 3.0.0 + * @memberOf _ + * @category Util + * @param {...(Function|Function[])} [funcs] The functions to invoke. + * @returns {Function} Returns the new composite function. + * @see _.flow + * @example + * + * function square(n) { + * return n * n; + * } + * + * var addSquare = _.flowRight([square, _.add]); + * addSquare(1, 2); + * // => 9 + */ + var flowRight = createFlow(true); + + /** + * This method returns the first argument it receives. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Util + * @param {*} value Any value. + * @returns {*} Returns `value`. + * @example + * + * var object = { 'a': 1 }; + * + * console.log(_.identity(object) === object); + * // => true + */ + function identity(value) { + return value; + } + + /** + * Creates a function that invokes `func` with the arguments of the created + * function. If `func` is a property name, the created function returns the + * property value for a given element. If `func` is an array or object, the + * created function returns `true` for elements that contain the equivalent + * source properties, otherwise it returns `false`. + * + * @static + * @since 4.0.0 + * @memberOf _ + * @category Util + * @param {*} [func=_.identity] The value to convert to a callback. + * @returns {Function} Returns the callback. + * @example + * + * var users = [ + * { 'user': 'barney', 'age': 36, 'active': true }, + * { 'user': 'fred', 'age': 40, 'active': false } + * ]; + * + * // The `_.matches` iteratee shorthand. + * _.filter(users, _.iteratee({ 'user': 'barney', 'active': true })); + * // => [{ 'user': 'barney', 'age': 36, 'active': true }] + * + * // The `_.matchesProperty` iteratee shorthand. + * _.filter(users, _.iteratee(['user', 'fred'])); + * // => [{ 'user': 'fred', 'age': 40 }] + * + * // The `_.property` iteratee shorthand. + * _.map(users, _.iteratee('user')); + * // => ['barney', 'fred'] + * + * // Create custom iteratee shorthands. + * _.iteratee = _.wrap(_.iteratee, function(iteratee, func) { + * return !_.isRegExp(func) ? iteratee(func) : function(string) { + * return func.test(string); + * }; + * }); + * + * _.filter(['abc', 'def'], /ef/); + * // => ['def'] + */ + function iteratee(func) { + return baseIteratee(typeof func == 'function' ? func : baseClone(func, CLONE_DEEP_FLAG)); + } + + /** + * Creates a function that performs a partial deep comparison between a given + * object and `source`, returning `true` if the given object has equivalent + * property values, else `false`. + * + * **Note:** The created function is equivalent to `_.isMatch` with `source` + * partially applied. + * + * Partial comparisons will match empty array and empty object `source` + * values against any array or object value, respectively. See `_.isEqual` + * for a list of supported value comparisons. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Util + * @param {Object} source The object of property values to match. + * @returns {Function} Returns the new spec function. + * @example + * + * var objects = [ + * { 'a': 1, 'b': 2, 'c': 3 }, + * { 'a': 4, 'b': 5, 'c': 6 } + * ]; + * + * _.filter(objects, _.matches({ 'a': 4, 'c': 6 })); + * // => [{ 'a': 4, 'b': 5, 'c': 6 }] + */ + function matches(source) { + return baseMatches(baseClone(source, CLONE_DEEP_FLAG)); + } + + /** + * Creates a function that performs a partial deep comparison between the + * value at `path` of a given object to `srcValue`, returning `true` if the + * object value is equivalent, else `false`. + * + * **Note:** Partial comparisons will match empty array and empty object + * `srcValue` values against any array or object value, respectively. See + * `_.isEqual` for a list of supported value comparisons. + * + * @static + * @memberOf _ + * @since 3.2.0 + * @category Util + * @param {Array|string} path The path of the property to get. + * @param {*} srcValue The value to match. + * @returns {Function} Returns the new spec function. + * @example + * + * var objects = [ + * { 'a': 1, 'b': 2, 'c': 3 }, + * { 'a': 4, 'b': 5, 'c': 6 } + * ]; + * + * _.find(objects, _.matchesProperty('a', 4)); + * // => { 'a': 4, 'b': 5, 'c': 6 } + */ + function matchesProperty(path, srcValue) { + return baseMatchesProperty(path, baseClone(srcValue, CLONE_DEEP_FLAG)); + } + + /** + * Creates a function that invokes the method at `path` of a given object. + * Any additional arguments are provided to the invoked method. + * + * @static + * @memberOf _ + * @since 3.7.0 + * @category Util + * @param {Array|string} path The path of the method to invoke. + * @param {...*} [args] The arguments to invoke the method with. + * @returns {Function} Returns the new invoker function. + * @example + * + * var objects = [ + * { 'a': { 'b': _.constant(2) } }, + * { 'a': { 'b': _.constant(1) } } + * ]; + * + * _.map(objects, _.method('a.b')); + * // => [2, 1] + * + * _.map(objects, _.method(['a', 'b'])); + * // => [2, 1] + */ + var method = baseRest(function(path, args) { + return function(object) { + return baseInvoke(object, path, args); + }; + }); + + /** + * The opposite of `_.method`; this method creates a function that invokes + * the method at a given path of `object`. Any additional arguments are + * provided to the invoked method. + * + * @static + * @memberOf _ + * @since 3.7.0 + * @category Util + * @param {Object} object The object to query. + * @param {...*} [args] The arguments to invoke the method with. + * @returns {Function} Returns the new invoker function. + * @example + * + * var array = _.times(3, _.constant), + * object = { 'a': array, 'b': array, 'c': array }; + * + * _.map(['a[2]', 'c[0]'], _.methodOf(object)); + * // => [2, 0] + * + * _.map([['a', '2'], ['c', '0']], _.methodOf(object)); + * // => [2, 0] + */ + var methodOf = baseRest(function(object, args) { + return function(path) { + return baseInvoke(object, path, args); + }; + }); + + /** + * Adds all own enumerable string keyed function properties of a source + * object to the destination object. If `object` is a function, then methods + * are added to its prototype as well. + * + * **Note:** Use `_.runInContext` to create a pristine `lodash` function to + * avoid conflicts caused by modifying the original. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Util + * @param {Function|Object} [object=lodash] The destination object. + * @param {Object} source The object of functions to add. + * @param {Object} [options={}] The options object. + * @param {boolean} [options.chain=true] Specify whether mixins are chainable. + * @returns {Function|Object} Returns `object`. + * @example + * + * function vowels(string) { + * return _.filter(string, function(v) { + * return /[aeiou]/i.test(v); + * }); + * } + * + * _.mixin({ 'vowels': vowels }); + * _.vowels('fred'); + * // => ['e'] + * + * _('fred').vowels().value(); + * // => ['e'] + * + * _.mixin({ 'vowels': vowels }, { 'chain': false }); + * _('fred').vowels(); + * // => ['e'] + */ + function mixin(object, source, options) { + var props = keys(source), + methodNames = baseFunctions(source, props); + + if (options == null && + !(isObject(source) && (methodNames.length || !props.length))) { + options = source; + source = object; + object = this; + methodNames = baseFunctions(source, keys(source)); + } + var chain = !(isObject(options) && 'chain' in options) || !!options.chain, + isFunc = isFunction(object); + + arrayEach(methodNames, function(methodName) { + var func = source[methodName]; + object[methodName] = func; + if (isFunc) { + object.prototype[methodName] = function() { + var chainAll = this.__chain__; + if (chain || chainAll) { + var result = object(this.__wrapped__), + actions = result.__actions__ = copyArray(this.__actions__); + + actions.push({ 'func': func, 'args': arguments, 'thisArg': object }); + result.__chain__ = chainAll; + return result; + } + return func.apply(object, arrayPush([this.value()], arguments)); + }; + } + }); + + return object; + } + + /** + * Reverts the `_` variable to its previous value and returns a reference to + * the `lodash` function. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Util + * @returns {Function} Returns the `lodash` function. + * @example + * + * var lodash = _.noConflict(); + */ + function noConflict() { + if (root._ === this) { + root._ = oldDash; + } + return this; + } + + /** + * This method returns `undefined`. + * + * @static + * @memberOf _ + * @since 2.3.0 + * @category Util + * @example + * + * _.times(2, _.noop); + * // => [undefined, undefined] + */ + function noop() { + // No operation performed. + } + + /** + * Creates a function that gets the argument at index `n`. If `n` is negative, + * the nth argument from the end is returned. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Util + * @param {number} [n=0] The index of the argument to return. + * @returns {Function} Returns the new pass-thru function. + * @example + * + * var func = _.nthArg(1); + * func('a', 'b', 'c', 'd'); + * // => 'b' + * + * var func = _.nthArg(-2); + * func('a', 'b', 'c', 'd'); + * // => 'c' + */ + function nthArg(n) { + n = toInteger(n); + return baseRest(function(args) { + return baseNth(args, n); + }); + } + + /** + * Creates a function that invokes `iteratees` with the arguments it receives + * and returns their results. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Util + * @param {...(Function|Function[])} [iteratees=[_.identity]] + * The iteratees to invoke. + * @returns {Function} Returns the new function. + * @example + * + * var func = _.over([Math.max, Math.min]); + * + * func(1, 2, 3, 4); + * // => [4, 1] + */ + var over = createOver(arrayMap); + + /** + * Creates a function that checks if **all** of the `predicates` return + * truthy when invoked with the arguments it receives. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Util + * @param {...(Function|Function[])} [predicates=[_.identity]] + * The predicates to check. + * @returns {Function} Returns the new function. + * @example + * + * var func = _.overEvery([Boolean, isFinite]); + * + * func('1'); + * // => true + * + * func(null); + * // => false + * + * func(NaN); + * // => false + */ + var overEvery = createOver(arrayEvery); + + /** + * Creates a function that checks if **any** of the `predicates` return + * truthy when invoked with the arguments it receives. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Util + * @param {...(Function|Function[])} [predicates=[_.identity]] + * The predicates to check. + * @returns {Function} Returns the new function. + * @example + * + * var func = _.overSome([Boolean, isFinite]); + * + * func('1'); + * // => true + * + * func(null); + * // => true + * + * func(NaN); + * // => false + */ + var overSome = createOver(arraySome); + + /** + * Creates a function that returns the value at `path` of a given object. + * + * @static + * @memberOf _ + * @since 2.4.0 + * @category Util + * @param {Array|string} path The path of the property to get. + * @returns {Function} Returns the new accessor function. + * @example + * + * var objects = [ + * { 'a': { 'b': 2 } }, + * { 'a': { 'b': 1 } } + * ]; + * + * _.map(objects, _.property('a.b')); + * // => [2, 1] + * + * _.map(_.sortBy(objects, _.property(['a', 'b'])), 'a.b'); + * // => [1, 2] + */ + function property(path) { + return isKey(path) ? baseProperty(toKey(path)) : basePropertyDeep(path); + } + + /** + * The opposite of `_.property`; this method creates a function that returns + * the value at a given path of `object`. + * + * @static + * @memberOf _ + * @since 3.0.0 + * @category Util + * @param {Object} object The object to query. + * @returns {Function} Returns the new accessor function. + * @example + * + * var array = [0, 1, 2], + * object = { 'a': array, 'b': array, 'c': array }; + * + * _.map(['a[2]', 'c[0]'], _.propertyOf(object)); + * // => [2, 0] + * + * _.map([['a', '2'], ['c', '0']], _.propertyOf(object)); + * // => [2, 0] + */ + function propertyOf(object) { + return function(path) { + return object == null ? undefined : baseGet(object, path); + }; + } + + /** + * Creates an array of numbers (positive and/or negative) progressing from + * `start` up to, but not including, `end`. A step of `-1` is used if a negative + * `start` is specified without an `end` or `step`. If `end` is not specified, + * it's set to `start` with `start` then set to `0`. + * + * **Note:** JavaScript follows the IEEE-754 standard for resolving + * floating-point values which can produce unexpected results. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Util + * @param {number} [start=0] The start of the range. + * @param {number} end The end of the range. + * @param {number} [step=1] The value to increment or decrement by. + * @returns {Array} Returns the range of numbers. + * @see _.inRange, _.rangeRight + * @example + * + * _.range(4); + * // => [0, 1, 2, 3] + * + * _.range(-4); + * // => [0, -1, -2, -3] + * + * _.range(1, 5); + * // => [1, 2, 3, 4] + * + * _.range(0, 20, 5); + * // => [0, 5, 10, 15] + * + * _.range(0, -4, -1); + * // => [0, -1, -2, -3] + * + * _.range(1, 4, 0); + * // => [1, 1, 1] + * + * _.range(0); + * // => [] + */ + var range = createRange(); + + /** + * This method is like `_.range` except that it populates values in + * descending order. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Util + * @param {number} [start=0] The start of the range. + * @param {number} end The end of the range. + * @param {number} [step=1] The value to increment or decrement by. + * @returns {Array} Returns the range of numbers. + * @see _.inRange, _.range + * @example + * + * _.rangeRight(4); + * // => [3, 2, 1, 0] + * + * _.rangeRight(-4); + * // => [-3, -2, -1, 0] + * + * _.rangeRight(1, 5); + * // => [4, 3, 2, 1] + * + * _.rangeRight(0, 20, 5); + * // => [15, 10, 5, 0] + * + * _.rangeRight(0, -4, -1); + * // => [-3, -2, -1, 0] + * + * _.rangeRight(1, 4, 0); + * // => [1, 1, 1] + * + * _.rangeRight(0); + * // => [] + */ + var rangeRight = createRange(true); + + /** + * This method returns a new empty array. + * + * @static + * @memberOf _ + * @since 4.13.0 + * @category Util + * @returns {Array} Returns the new empty array. + * @example + * + * var arrays = _.times(2, _.stubArray); + * + * console.log(arrays); + * // => [[], []] + * + * console.log(arrays[0] === arrays[1]); + * // => false + */ + function stubArray() { + return []; + } + + /** + * This method returns `false`. + * + * @static + * @memberOf _ + * @since 4.13.0 + * @category Util + * @returns {boolean} Returns `false`. + * @example + * + * _.times(2, _.stubFalse); + * // => [false, false] + */ + function stubFalse() { + return false; + } + + /** + * This method returns a new empty object. + * + * @static + * @memberOf _ + * @since 4.13.0 + * @category Util + * @returns {Object} Returns the new empty object. + * @example + * + * var objects = _.times(2, _.stubObject); + * + * console.log(objects); + * // => [{}, {}] + * + * console.log(objects[0] === objects[1]); + * // => false + */ + function stubObject() { + return {}; + } + + /** + * This method returns an empty string. + * + * @static + * @memberOf _ + * @since 4.13.0 + * @category Util + * @returns {string} Returns the empty string. + * @example + * + * _.times(2, _.stubString); + * // => ['', ''] + */ + function stubString() { + return ''; + } + + /** + * This method returns `true`. + * + * @static + * @memberOf _ + * @since 4.13.0 + * @category Util + * @returns {boolean} Returns `true`. + * @example + * + * _.times(2, _.stubTrue); + * // => [true, true] + */ + function stubTrue() { + return true; + } + + /** + * Invokes the iteratee `n` times, returning an array of the results of + * each invocation. The iteratee is invoked with one argument; (index). + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Util + * @param {number} n The number of times to invoke `iteratee`. + * @param {Function} [iteratee=_.identity] The function invoked per iteration. + * @returns {Array} Returns the array of results. + * @example + * + * _.times(3, String); + * // => ['0', '1', '2'] + * + * _.times(4, _.constant(0)); + * // => [0, 0, 0, 0] + */ + function times(n, iteratee) { + n = toInteger(n); + if (n < 1 || n > MAX_SAFE_INTEGER) { + return []; + } + var index = MAX_ARRAY_LENGTH, + length = nativeMin(n, MAX_ARRAY_LENGTH); + + iteratee = getIteratee(iteratee); + n -= MAX_ARRAY_LENGTH; + + var result = baseTimes(length, iteratee); + while (++index < n) { + iteratee(index); + } + return result; + } + + /** + * Converts `value` to a property path array. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Util + * @param {*} value The value to convert. + * @returns {Array} Returns the new property path array. + * @example + * + * _.toPath('a.b.c'); + * // => ['a', 'b', 'c'] + * + * _.toPath('a[0].b.c'); + * // => ['a', '0', 'b', 'c'] + */ + function toPath(value) { + if (isArray(value)) { + return arrayMap(value, toKey); + } + return isSymbol(value) ? [value] : copyArray(stringToPath(toString(value))); + } + + /** + * Generates a unique ID. If `prefix` is given, the ID is appended to it. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Util + * @param {string} [prefix=''] The value to prefix the ID with. + * @returns {string} Returns the unique ID. + * @example + * + * _.uniqueId('contact_'); + * // => 'contact_104' + * + * _.uniqueId(); + * // => '105' + */ + function uniqueId(prefix) { + var id = ++idCounter; + return toString(prefix) + id; + } + + /*------------------------------------------------------------------------*/ + + /** + * Adds two numbers. + * + * @static + * @memberOf _ + * @since 3.4.0 + * @category Math + * @param {number} augend The first number in an addition. + * @param {number} addend The second number in an addition. + * @returns {number} Returns the total. + * @example + * + * _.add(6, 4); + * // => 10 + */ + var add = createMathOperation(function(augend, addend) { + return augend + addend; + }, 0); + + /** + * Computes `number` rounded up to `precision`. + * + * @static + * @memberOf _ + * @since 3.10.0 + * @category Math + * @param {number} number The number to round up. + * @param {number} [precision=0] The precision to round up to. + * @returns {number} Returns the rounded up number. + * @example + * + * _.ceil(4.006); + * // => 5 + * + * _.ceil(6.004, 2); + * // => 6.01 + * + * _.ceil(6040, -2); + * // => 6100 + */ + var ceil = createRound('ceil'); + + /** + * Divide two numbers. + * + * @static + * @memberOf _ + * @since 4.7.0 + * @category Math + * @param {number} dividend The first number in a division. + * @param {number} divisor The second number in a division. + * @returns {number} Returns the quotient. + * @example + * + * _.divide(6, 4); + * // => 1.5 + */ + var divide = createMathOperation(function(dividend, divisor) { + return dividend / divisor; + }, 1); + + /** + * Computes `number` rounded down to `precision`. + * + * @static + * @memberOf _ + * @since 3.10.0 + * @category Math + * @param {number} number The number to round down. + * @param {number} [precision=0] The precision to round down to. + * @returns {number} Returns the rounded down number. + * @example + * + * _.floor(4.006); + * // => 4 + * + * _.floor(0.046, 2); + * // => 0.04 + * + * _.floor(4060, -2); + * // => 4000 + */ + var floor = createRound('floor'); + + /** + * Computes the maximum value of `array`. If `array` is empty or falsey, + * `undefined` is returned. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Math + * @param {Array} array The array to iterate over. + * @returns {*} Returns the maximum value. + * @example + * + * _.max([4, 2, 8, 6]); + * // => 8 + * + * _.max([]); + * // => undefined + */ + function max(array) { + return (array && array.length) + ? baseExtremum(array, identity, baseGt) + : undefined; + } + + /** + * This method is like `_.max` except that it accepts `iteratee` which is + * invoked for each element in `array` to generate the criterion by which + * the value is ranked. The iteratee is invoked with one argument: (value). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Math + * @param {Array} array The array to iterate over. + * @param {Function} [iteratee=_.identity] The iteratee invoked per element. + * @returns {*} Returns the maximum value. + * @example + * + * var objects = [{ 'n': 1 }, { 'n': 2 }]; + * + * _.maxBy(objects, function(o) { return o.n; }); + * // => { 'n': 2 } + * + * // The `_.property` iteratee shorthand. + * _.maxBy(objects, 'n'); + * // => { 'n': 2 } + */ + function maxBy(array, iteratee) { + return (array && array.length) + ? baseExtremum(array, getIteratee(iteratee, 2), baseGt) + : undefined; + } + + /** + * Computes the mean of the values in `array`. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Math + * @param {Array} array The array to iterate over. + * @returns {number} Returns the mean. + * @example + * + * _.mean([4, 2, 8, 6]); + * // => 5 + */ + function mean(array) { + return baseMean(array, identity); + } + + /** + * This method is like `_.mean` except that it accepts `iteratee` which is + * invoked for each element in `array` to generate the value to be averaged. + * The iteratee is invoked with one argument: (value). + * + * @static + * @memberOf _ + * @since 4.7.0 + * @category Math + * @param {Array} array The array to iterate over. + * @param {Function} [iteratee=_.identity] The iteratee invoked per element. + * @returns {number} Returns the mean. + * @example + * + * var objects = [{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }]; + * + * _.meanBy(objects, function(o) { return o.n; }); + * // => 5 + * + * // The `_.property` iteratee shorthand. + * _.meanBy(objects, 'n'); + * // => 5 + */ + function meanBy(array, iteratee) { + return baseMean(array, getIteratee(iteratee, 2)); + } + + /** + * Computes the minimum value of `array`. If `array` is empty or falsey, + * `undefined` is returned. + * + * @static + * @since 0.1.0 + * @memberOf _ + * @category Math + * @param {Array} array The array to iterate over. + * @returns {*} Returns the minimum value. + * @example + * + * _.min([4, 2, 8, 6]); + * // => 2 + * + * _.min([]); + * // => undefined + */ + function min(array) { + return (array && array.length) + ? baseExtremum(array, identity, baseLt) + : undefined; + } + + /** + * This method is like `_.min` except that it accepts `iteratee` which is + * invoked for each element in `array` to generate the criterion by which + * the value is ranked. The iteratee is invoked with one argument: (value). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Math + * @param {Array} array The array to iterate over. + * @param {Function} [iteratee=_.identity] The iteratee invoked per element. + * @returns {*} Returns the minimum value. + * @example + * + * var objects = [{ 'n': 1 }, { 'n': 2 }]; + * + * _.minBy(objects, function(o) { return o.n; }); + * // => { 'n': 1 } + * + * // The `_.property` iteratee shorthand. + * _.minBy(objects, 'n'); + * // => { 'n': 1 } + */ + function minBy(array, iteratee) { + return (array && array.length) + ? baseExtremum(array, getIteratee(iteratee, 2), baseLt) + : undefined; + } + + /** + * Multiply two numbers. + * + * @static + * @memberOf _ + * @since 4.7.0 + * @category Math + * @param {number} multiplier The first number in a multiplication. + * @param {number} multiplicand The second number in a multiplication. + * @returns {number} Returns the product. + * @example + * + * _.multiply(6, 4); + * // => 24 + */ + var multiply = createMathOperation(function(multiplier, multiplicand) { + return multiplier * multiplicand; + }, 1); + + /** + * Computes `number` rounded to `precision`. + * + * @static + * @memberOf _ + * @since 3.10.0 + * @category Math + * @param {number} number The number to round. + * @param {number} [precision=0] The precision to round to. + * @returns {number} Returns the rounded number. + * @example + * + * _.round(4.006); + * // => 4 + * + * _.round(4.006, 2); + * // => 4.01 + * + * _.round(4060, -2); + * // => 4100 + */ + var round = createRound('round'); + + /** + * Subtract two numbers. + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Math + * @param {number} minuend The first number in a subtraction. + * @param {number} subtrahend The second number in a subtraction. + * @returns {number} Returns the difference. + * @example + * + * _.subtract(6, 4); + * // => 2 + */ + var subtract = createMathOperation(function(minuend, subtrahend) { + return minuend - subtrahend; + }, 0); + + /** + * Computes the sum of the values in `array`. + * + * @static + * @memberOf _ + * @since 3.4.0 + * @category Math + * @param {Array} array The array to iterate over. + * @returns {number} Returns the sum. + * @example + * + * _.sum([4, 2, 8, 6]); + * // => 20 + */ + function sum(array) { + return (array && array.length) + ? baseSum(array, identity) + : 0; + } + + /** + * This method is like `_.sum` except that it accepts `iteratee` which is + * invoked for each element in `array` to generate the value to be summed. + * The iteratee is invoked with one argument: (value). + * + * @static + * @memberOf _ + * @since 4.0.0 + * @category Math + * @param {Array} array The array to iterate over. + * @param {Function} [iteratee=_.identity] The iteratee invoked per element. + * @returns {number} Returns the sum. + * @example + * + * var objects = [{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }]; + * + * _.sumBy(objects, function(o) { return o.n; }); + * // => 20 + * + * // The `_.property` iteratee shorthand. + * _.sumBy(objects, 'n'); + * // => 20 + */ + function sumBy(array, iteratee) { + return (array && array.length) + ? baseSum(array, getIteratee(iteratee, 2)) + : 0; + } + + /*------------------------------------------------------------------------*/ + + // Add methods that return wrapped values in chain sequences. + lodash.after = after; + lodash.ary = ary; + lodash.assign = assign; + lodash.assignIn = assignIn; + lodash.assignInWith = assignInWith; + lodash.assignWith = assignWith; + lodash.at = at; + lodash.before = before; + lodash.bind = bind; + lodash.bindAll = bindAll; + lodash.bindKey = bindKey; + lodash.castArray = castArray; + lodash.chain = chain; + lodash.chunk = chunk; + lodash.compact = compact; + lodash.concat = concat; + lodash.cond = cond; + lodash.conforms = conforms; + lodash.constant = constant; + lodash.countBy = countBy; + lodash.create = create; + lodash.curry = curry; + lodash.curryRight = curryRight; + lodash.debounce = debounce; + lodash.defaults = defaults; + lodash.defaultsDeep = defaultsDeep; + lodash.defer = defer; + lodash.delay = delay; + lodash.difference = difference; + lodash.differenceBy = differenceBy; + lodash.differenceWith = differenceWith; + lodash.drop = drop; + lodash.dropRight = dropRight; + lodash.dropRightWhile = dropRightWhile; + lodash.dropWhile = dropWhile; + lodash.fill = fill; + lodash.filter = filter; + lodash.flatMap = flatMap; + lodash.flatMapDeep = flatMapDeep; + lodash.flatMapDepth = flatMapDepth; + lodash.flatten = flatten; + lodash.flattenDeep = flattenDeep; + lodash.flattenDepth = flattenDepth; + lodash.flip = flip; + lodash.flow = flow; + lodash.flowRight = flowRight; + lodash.fromPairs = fromPairs; + lodash.functions = functions; + lodash.functionsIn = functionsIn; + lodash.groupBy = groupBy; + lodash.initial = initial; + lodash.intersection = intersection; + lodash.intersectionBy = intersectionBy; + lodash.intersectionWith = intersectionWith; + lodash.invert = invert; + lodash.invertBy = invertBy; + lodash.invokeMap = invokeMap; + lodash.iteratee = iteratee; + lodash.keyBy = keyBy; + lodash.keys = keys; + lodash.keysIn = keysIn; + lodash.map = map; + lodash.mapKeys = mapKeys; + lodash.mapValues = mapValues; + lodash.matches = matches; + lodash.matchesProperty = matchesProperty; + lodash.memoize = memoize; + lodash.merge = merge; + lodash.mergeWith = mergeWith; + lodash.method = method; + lodash.methodOf = methodOf; + lodash.mixin = mixin; + lodash.negate = negate; + lodash.nthArg = nthArg; + lodash.omit = omit; + lodash.omitBy = omitBy; + lodash.once = once; + lodash.orderBy = orderBy; + lodash.over = over; + lodash.overArgs = overArgs; + lodash.overEvery = overEvery; + lodash.overSome = overSome; + lodash.partial = partial; + lodash.partialRight = partialRight; + lodash.partition = partition; + lodash.pick = pick; + lodash.pickBy = pickBy; + lodash.property = property; + lodash.propertyOf = propertyOf; + lodash.pull = pull; + lodash.pullAll = pullAll; + lodash.pullAllBy = pullAllBy; + lodash.pullAllWith = pullAllWith; + lodash.pullAt = pullAt; + lodash.range = range; + lodash.rangeRight = rangeRight; + lodash.rearg = rearg; + lodash.reject = reject; + lodash.remove = remove; + lodash.rest = rest; + lodash.reverse = reverse; + lodash.sampleSize = sampleSize; + lodash.set = set; + lodash.setWith = setWith; + lodash.shuffle = shuffle; + lodash.slice = slice; + lodash.sortBy = sortBy; + lodash.sortedUniq = sortedUniq; + lodash.sortedUniqBy = sortedUniqBy; + lodash.split = split; + lodash.spread = spread; + lodash.tail = tail; + lodash.take = take; + lodash.takeRight = takeRight; + lodash.takeRightWhile = takeRightWhile; + lodash.takeWhile = takeWhile; + lodash.tap = tap; + lodash.throttle = throttle; + lodash.thru = thru; + lodash.toArray = toArray; + lodash.toPairs = toPairs; + lodash.toPairsIn = toPairsIn; + lodash.toPath = toPath; + lodash.toPlainObject = toPlainObject; + lodash.transform = transform; + lodash.unary = unary; + lodash.union = union; + lodash.unionBy = unionBy; + lodash.unionWith = unionWith; + lodash.uniq = uniq; + lodash.uniqBy = uniqBy; + lodash.uniqWith = uniqWith; + lodash.unset = unset; + lodash.unzip = unzip; + lodash.unzipWith = unzipWith; + lodash.update = update; + lodash.updateWith = updateWith; + lodash.values = values; + lodash.valuesIn = valuesIn; + lodash.without = without; + lodash.words = words; + lodash.wrap = wrap; + lodash.xor = xor; + lodash.xorBy = xorBy; + lodash.xorWith = xorWith; + lodash.zip = zip; + lodash.zipObject = zipObject; + lodash.zipObjectDeep = zipObjectDeep; + lodash.zipWith = zipWith; + + // Add aliases. + lodash.entries = toPairs; + lodash.entriesIn = toPairsIn; + lodash.extend = assignIn; + lodash.extendWith = assignInWith; + + // Add methods to `lodash.prototype`. + mixin(lodash, lodash); + + /*------------------------------------------------------------------------*/ + + // Add methods that return unwrapped values in chain sequences. + lodash.add = add; + lodash.attempt = attempt; + lodash.camelCase = camelCase; + lodash.capitalize = capitalize; + lodash.ceil = ceil; + lodash.clamp = clamp; + lodash.clone = clone; + lodash.cloneDeep = cloneDeep; + lodash.cloneDeepWith = cloneDeepWith; + lodash.cloneWith = cloneWith; + lodash.conformsTo = conformsTo; + lodash.deburr = deburr; + lodash.defaultTo = defaultTo; + lodash.divide = divide; + lodash.endsWith = endsWith; + lodash.eq = eq; + lodash.escape = escape; + lodash.escapeRegExp = escapeRegExp; + lodash.every = every; + lodash.find = find; + lodash.findIndex = findIndex; + lodash.findKey = findKey; + lodash.findLast = findLast; + lodash.findLastIndex = findLastIndex; + lodash.findLastKey = findLastKey; + lodash.floor = floor; + lodash.forEach = forEach; + lodash.forEachRight = forEachRight; + lodash.forIn = forIn; + lodash.forInRight = forInRight; + lodash.forOwn = forOwn; + lodash.forOwnRight = forOwnRight; + lodash.get = get; + lodash.gt = gt; + lodash.gte = gte; + lodash.has = has; + lodash.hasIn = hasIn; + lodash.head = head; + lodash.identity = identity; + lodash.includes = includes; + lodash.indexOf = indexOf; + lodash.inRange = inRange; + lodash.invoke = invoke; + lodash.isArguments = isArguments; + lodash.isArray = isArray; + lodash.isArrayBuffer = isArrayBuffer; + lodash.isArrayLike = isArrayLike; + lodash.isArrayLikeObject = isArrayLikeObject; + lodash.isBoolean = isBoolean; + lodash.isBuffer = isBuffer; + lodash.isDate = isDate; + lodash.isElement = isElement; + lodash.isEmpty = isEmpty; + lodash.isEqual = isEqual; + lodash.isEqualWith = isEqualWith; + lodash.isError = isError; + lodash.isFinite = isFinite; + lodash.isFunction = isFunction; + lodash.isInteger = isInteger; + lodash.isLength = isLength; + lodash.isMap = isMap; + lodash.isMatch = isMatch; + lodash.isMatchWith = isMatchWith; + lodash.isNaN = isNaN; + lodash.isNative = isNative; + lodash.isNil = isNil; + lodash.isNull = isNull; + lodash.isNumber = isNumber; + lodash.isObject = isObject; + lodash.isObjectLike = isObjectLike; + lodash.isPlainObject = isPlainObject; + lodash.isRegExp = isRegExp; + lodash.isSafeInteger = isSafeInteger; + lodash.isSet = isSet; + lodash.isString = isString; + lodash.isSymbol = isSymbol; + lodash.isTypedArray = isTypedArray; + lodash.isUndefined = isUndefined; + lodash.isWeakMap = isWeakMap; + lodash.isWeakSet = isWeakSet; + lodash.join = join; + lodash.kebabCase = kebabCase; + lodash.last = last; + lodash.lastIndexOf = lastIndexOf; + lodash.lowerCase = lowerCase; + lodash.lowerFirst = lowerFirst; + lodash.lt = lt; + lodash.lte = lte; + lodash.max = max; + lodash.maxBy = maxBy; + lodash.mean = mean; + lodash.meanBy = meanBy; + lodash.min = min; + lodash.minBy = minBy; + lodash.stubArray = stubArray; + lodash.stubFalse = stubFalse; + lodash.stubObject = stubObject; + lodash.stubString = stubString; + lodash.stubTrue = stubTrue; + lodash.multiply = multiply; + lodash.nth = nth; + lodash.noConflict = noConflict; + lodash.noop = noop; + lodash.now = now; + lodash.pad = pad; + lodash.padEnd = padEnd; + lodash.padStart = padStart; + lodash.parseInt = parseInt; + lodash.random = random; + lodash.reduce = reduce; + lodash.reduceRight = reduceRight; + lodash.repeat = repeat; + lodash.replace = replace; + lodash.result = result; + lodash.round = round; + lodash.runInContext = runInContext; + lodash.sample = sample; + lodash.size = size; + lodash.snakeCase = snakeCase; + lodash.some = some; + lodash.sortedIndex = sortedIndex; + lodash.sortedIndexBy = sortedIndexBy; + lodash.sortedIndexOf = sortedIndexOf; + lodash.sortedLastIndex = sortedLastIndex; + lodash.sortedLastIndexBy = sortedLastIndexBy; + lodash.sortedLastIndexOf = sortedLastIndexOf; + lodash.startCase = startCase; + lodash.startsWith = startsWith; + lodash.subtract = subtract; + lodash.sum = sum; + lodash.sumBy = sumBy; + lodash.template = template; + lodash.times = times; + lodash.toFinite = toFinite; + lodash.toInteger = toInteger; + lodash.toLength = toLength; + lodash.toLower = toLower; + lodash.toNumber = toNumber; + lodash.toSafeInteger = toSafeInteger; + lodash.toString = toString; + lodash.toUpper = toUpper; + lodash.trim = trim; + lodash.trimEnd = trimEnd; + lodash.trimStart = trimStart; + lodash.truncate = truncate; + lodash.unescape = unescape; + lodash.uniqueId = uniqueId; + lodash.upperCase = upperCase; + lodash.upperFirst = upperFirst; + + // Add aliases. + lodash.each = forEach; + lodash.eachRight = forEachRight; + lodash.first = head; + + mixin(lodash, (function() { + var source = {}; + baseForOwn(lodash, function(func, methodName) { + if (!hasOwnProperty.call(lodash.prototype, methodName)) { + source[methodName] = func; + } + }); + return source; + }()), { 'chain': false }); + + /*------------------------------------------------------------------------*/ + + /** + * The semantic version number. + * + * @static + * @memberOf _ + * @type {string} + */ + lodash.VERSION = VERSION; + + // Assign default placeholders. + arrayEach(['bind', 'bindKey', 'curry', 'curryRight', 'partial', 'partialRight'], function(methodName) { + lodash[methodName].placeholder = lodash; + }); + + // Add `LazyWrapper` methods for `_.drop` and `_.take` variants. + arrayEach(['drop', 'take'], function(methodName, index) { + LazyWrapper.prototype[methodName] = function(n) { + n = n === undefined ? 1 : nativeMax(toInteger(n), 0); + + var result = (this.__filtered__ && !index) + ? new LazyWrapper(this) + : this.clone(); + + if (result.__filtered__) { + result.__takeCount__ = nativeMin(n, result.__takeCount__); + } else { + result.__views__.push({ + 'size': nativeMin(n, MAX_ARRAY_LENGTH), + 'type': methodName + (result.__dir__ < 0 ? 'Right' : '') + }); + } + return result; + }; + + LazyWrapper.prototype[methodName + 'Right'] = function(n) { + return this.reverse()[methodName](n).reverse(); + }; + }); + + // Add `LazyWrapper` methods that accept an `iteratee` value. + arrayEach(['filter', 'map', 'takeWhile'], function(methodName, index) { + var type = index + 1, + isFilter = type == LAZY_FILTER_FLAG || type == LAZY_WHILE_FLAG; + + LazyWrapper.prototype[methodName] = function(iteratee) { + var result = this.clone(); + result.__iteratees__.push({ + 'iteratee': getIteratee(iteratee, 3), + 'type': type + }); + result.__filtered__ = result.__filtered__ || isFilter; + return result; + }; + }); + + // Add `LazyWrapper` methods for `_.head` and `_.last`. + arrayEach(['head', 'last'], function(methodName, index) { + var takeName = 'take' + (index ? 'Right' : ''); + + LazyWrapper.prototype[methodName] = function() { + return this[takeName](1).value()[0]; + }; + }); + + // Add `LazyWrapper` methods for `_.initial` and `_.tail`. + arrayEach(['initial', 'tail'], function(methodName, index) { + var dropName = 'drop' + (index ? '' : 'Right'); + + LazyWrapper.prototype[methodName] = function() { + return this.__filtered__ ? new LazyWrapper(this) : this[dropName](1); + }; + }); + + LazyWrapper.prototype.compact = function() { + return this.filter(identity); + }; + + LazyWrapper.prototype.find = function(predicate) { + return this.filter(predicate).head(); + }; + + LazyWrapper.prototype.findLast = function(predicate) { + return this.reverse().find(predicate); + }; + + LazyWrapper.prototype.invokeMap = baseRest(function(path, args) { + if (typeof path == 'function') { + return new LazyWrapper(this); + } + return this.map(function(value) { + return baseInvoke(value, path, args); + }); + }); + + LazyWrapper.prototype.reject = function(predicate) { + return this.filter(negate(getIteratee(predicate))); + }; + + LazyWrapper.prototype.slice = function(start, end) { + start = toInteger(start); + + var result = this; + if (result.__filtered__ && (start > 0 || end < 0)) { + return new LazyWrapper(result); + } + if (start < 0) { + result = result.takeRight(-start); + } else if (start) { + result = result.drop(start); + } + if (end !== undefined) { + end = toInteger(end); + result = end < 0 ? result.dropRight(-end) : result.take(end - start); + } + return result; + }; + + LazyWrapper.prototype.takeRightWhile = function(predicate) { + return this.reverse().takeWhile(predicate).reverse(); + }; + + LazyWrapper.prototype.toArray = function() { + return this.take(MAX_ARRAY_LENGTH); + }; + + // Add `LazyWrapper` methods to `lodash.prototype`. + baseForOwn(LazyWrapper.prototype, function(func, methodName) { + var checkIteratee = /^(?:filter|find|map|reject)|While$/.test(methodName), + isTaker = /^(?:head|last)$/.test(methodName), + lodashFunc = lodash[isTaker ? ('take' + (methodName == 'last' ? 'Right' : '')) : methodName], + retUnwrapped = isTaker || /^find/.test(methodName); + + if (!lodashFunc) { + return; + } + lodash.prototype[methodName] = function() { + var value = this.__wrapped__, + args = isTaker ? [1] : arguments, + isLazy = value instanceof LazyWrapper, + iteratee = args[0], + useLazy = isLazy || isArray(value); + + var interceptor = function(value) { + var result = lodashFunc.apply(lodash, arrayPush([value], args)); + return (isTaker && chainAll) ? result[0] : result; + }; + + if (useLazy && checkIteratee && typeof iteratee == 'function' && iteratee.length != 1) { + // Avoid lazy use if the iteratee has a "length" value other than `1`. + isLazy = useLazy = false; + } + var chainAll = this.__chain__, + isHybrid = !!this.__actions__.length, + isUnwrapped = retUnwrapped && !chainAll, + onlyLazy = isLazy && !isHybrid; + + if (!retUnwrapped && useLazy) { + value = onlyLazy ? value : new LazyWrapper(this); + var result = func.apply(value, args); + result.__actions__.push({ 'func': thru, 'args': [interceptor], 'thisArg': undefined }); + return new LodashWrapper(result, chainAll); + } + if (isUnwrapped && onlyLazy) { + return func.apply(this, args); + } + result = this.thru(interceptor); + return isUnwrapped ? (isTaker ? result.value()[0] : result.value()) : result; + }; + }); + + // Add `Array` methods to `lodash.prototype`. + arrayEach(['pop', 'push', 'shift', 'sort', 'splice', 'unshift'], function(methodName) { + var func = arrayProto[methodName], + chainName = /^(?:push|sort|unshift)$/.test(methodName) ? 'tap' : 'thru', + retUnwrapped = /^(?:pop|shift)$/.test(methodName); + + lodash.prototype[methodName] = function() { + var args = arguments; + if (retUnwrapped && !this.__chain__) { + var value = this.value(); + return func.apply(isArray(value) ? value : [], args); + } + return this[chainName](function(value) { + return func.apply(isArray(value) ? value : [], args); + }); + }; + }); + + // Map minified method names to their real names. + baseForOwn(LazyWrapper.prototype, function(func, methodName) { + var lodashFunc = lodash[methodName]; + if (lodashFunc) { + var key = lodashFunc.name + ''; + if (!hasOwnProperty.call(realNames, key)) { + realNames[key] = []; + } + realNames[key].push({ 'name': methodName, 'func': lodashFunc }); + } + }); + + realNames[createHybrid(undefined, WRAP_BIND_KEY_FLAG).name] = [{ + 'name': 'wrapper', + 'func': undefined + }]; + + // Add methods to `LazyWrapper`. + LazyWrapper.prototype.clone = lazyClone; + LazyWrapper.prototype.reverse = lazyReverse; + LazyWrapper.prototype.value = lazyValue; + + // Add chain sequence methods to the `lodash` wrapper. + lodash.prototype.at = wrapperAt; + lodash.prototype.chain = wrapperChain; + lodash.prototype.commit = wrapperCommit; + lodash.prototype.next = wrapperNext; + lodash.prototype.plant = wrapperPlant; + lodash.prototype.reverse = wrapperReverse; + lodash.prototype.toJSON = lodash.prototype.valueOf = lodash.prototype.value = wrapperValue; + + // Add lazy aliases. + lodash.prototype.first = lodash.prototype.head; + + if (symIterator) { + lodash.prototype[symIterator] = wrapperToIterator; + } + return lodash; + }); + + /*--------------------------------------------------------------------------*/ + + // Export lodash. + var _ = runInContext(); + + // Some AMD build optimizers, like r.js, check for condition patterns like: + if (true) { + // Expose Lodash on the global object to prevent errors when Lodash is + // loaded by a script tag in the presence of an AMD loader. + // See http://requirejs.org/docs/errors.html#mismatch for more details. + // Use `_.noConflict` to remove Lodash from the global object. + root._ = _; + + // Define as an anonymous module so, through path mapping, it can be + // referenced as the "underscore" module. + !(__WEBPACK_AMD_DEFINE_RESULT__ = (function() { + return _; + }).call(exports, __webpack_require__, exports, module), + __WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__)); + } + // Check for `exports` after `define` in case a build optimizer adds it. + else {} +}.call(this)); + +/* WEBPACK VAR INJECTION */}.call(this, __webpack_require__(/*! ./../webpack/buildin/global.js */ "./node_modules/webpack/buildin/global.js"), __webpack_require__(/*! ./../webpack/buildin/module.js */ "./node_modules/webpack/buildin/module.js")(module))) + +/***/ }), + +/***/ "./node_modules/process/browser.js": +/*!*****************************************!*\ + !*** ./node_modules/process/browser.js ***! + \*****************************************/ +/*! no static exports found */ +/***/ (function(module, exports) { + +// shim for using process in browser +var process = module.exports = {}; + +// cached from whatever global is present so that test runners that stub it +// don't break things. But we need to wrap it in a try catch in case it is +// wrapped in strict mode code which doesn't define any globals. It's inside a +// function because try/catches deoptimize in certain engines. + +var cachedSetTimeout; +var cachedClearTimeout; + +function defaultSetTimout() { + throw new Error('setTimeout has not been defined'); +} +function defaultClearTimeout () { + throw new Error('clearTimeout has not been defined'); +} +(function () { + try { + if (typeof setTimeout === 'function') { + cachedSetTimeout = setTimeout; + } else { + cachedSetTimeout = defaultSetTimout; + } + } catch (e) { + cachedSetTimeout = defaultSetTimout; + } + try { + if (typeof clearTimeout === 'function') { + cachedClearTimeout = clearTimeout; + } else { + cachedClearTimeout = defaultClearTimeout; + } + } catch (e) { + cachedClearTimeout = defaultClearTimeout; + } +} ()) +function runTimeout(fun) { + if (cachedSetTimeout === setTimeout) { + //normal enviroments in sane situations + return setTimeout(fun, 0); + } + // if setTimeout wasn't available but was latter defined + if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) { + cachedSetTimeout = setTimeout; + return setTimeout(fun, 0); + } + try { + // when when somebody has screwed with setTimeout but no I.E. maddness + return cachedSetTimeout(fun, 0); + } catch(e){ + try { + // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally + return cachedSetTimeout.call(null, fun, 0); + } catch(e){ + // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error + return cachedSetTimeout.call(this, fun, 0); + } + } + + +} +function runClearTimeout(marker) { + if (cachedClearTimeout === clearTimeout) { + //normal enviroments in sane situations + return clearTimeout(marker); + } + // if clearTimeout wasn't available but was latter defined + if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) { + cachedClearTimeout = clearTimeout; + return clearTimeout(marker); + } + try { + // when when somebody has screwed with setTimeout but no I.E. maddness + return cachedClearTimeout(marker); + } catch (e){ + try { + // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally + return cachedClearTimeout.call(null, marker); + } catch (e){ + // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error. + // Some versions of I.E. have different rules for clearTimeout vs setTimeout + return cachedClearTimeout.call(this, marker); + } + } + + + +} +var queue = []; +var draining = false; +var currentQueue; +var queueIndex = -1; + +function cleanUpNextTick() { + if (!draining || !currentQueue) { + return; + } + draining = false; + if (currentQueue.length) { + queue = currentQueue.concat(queue); + } else { + queueIndex = -1; + } + if (queue.length) { + drainQueue(); + } +} + +function drainQueue() { + if (draining) { + return; + } + var timeout = runTimeout(cleanUpNextTick); + draining = true; + + var len = queue.length; + while(len) { + currentQueue = queue; + queue = []; + while (++queueIndex < len) { + if (currentQueue) { + currentQueue[queueIndex].run(); + } + } + queueIndex = -1; + len = queue.length; + } + currentQueue = null; + draining = false; + runClearTimeout(timeout); +} + +process.nextTick = function (fun) { + var args = new Array(arguments.length - 1); + if (arguments.length > 1) { + for (var i = 1; i < arguments.length; i++) { + args[i - 1] = arguments[i]; + } + } + queue.push(new Item(fun, args)); + if (queue.length === 1 && !draining) { + runTimeout(drainQueue); + } +}; + +// v8 likes predictible objects +function Item(fun, array) { + this.fun = fun; + this.array = array; +} +Item.prototype.run = function () { + this.fun.apply(null, this.array); +}; +process.title = 'browser'; +process.browser = true; +process.env = {}; +process.argv = []; +process.version = ''; // empty string to avoid regexp issues +process.versions = {}; + +function noop() {} + +process.on = noop; +process.addListener = noop; +process.once = noop; +process.off = noop; +process.removeListener = noop; +process.removeAllListeners = noop; +process.emit = noop; +process.prependListener = noop; +process.prependOnceListener = noop; + +process.listeners = function (name) { return [] } + +process.binding = function (name) { + throw new Error('process.binding is not supported'); +}; + +process.cwd = function () { return '/' }; +process.chdir = function (dir) { + throw new Error('process.chdir is not supported'); +}; +process.umask = function() { return 0; }; + + +/***/ }), + +/***/ "./node_modules/setimmediate/setImmediate.js": +/*!***************************************************!*\ + !*** ./node_modules/setimmediate/setImmediate.js ***! + \***************************************************/ +/*! no static exports found */ +/***/ (function(module, exports, __webpack_require__) { + +/* WEBPACK VAR INJECTION */(function(global, process) {(function (global, undefined) { + "use strict"; + + if (global.setImmediate) { + return; + } + + var nextHandle = 1; // Spec says greater than zero + var tasksByHandle = {}; + var currentlyRunningATask = false; + var doc = global.document; + var registerImmediate; + + function setImmediate(callback) { + // Callback can either be a function or a string + if (typeof callback !== "function") { + callback = new Function("" + callback); + } + // Copy function arguments + var args = new Array(arguments.length - 1); + for (var i = 0; i < args.length; i++) { + args[i] = arguments[i + 1]; + } + // Store and register the task + var task = { callback: callback, args: args }; + tasksByHandle[nextHandle] = task; + registerImmediate(nextHandle); + return nextHandle++; + } + + function clearImmediate(handle) { + delete tasksByHandle[handle]; + } + + function run(task) { + var callback = task.callback; + var args = task.args; + switch (args.length) { + case 0: + callback(); + break; + case 1: + callback(args[0]); + break; + case 2: + callback(args[0], args[1]); + break; + case 3: + callback(args[0], args[1], args[2]); + break; + default: + callback.apply(undefined, args); + break; + } + } + + function runIfPresent(handle) { + // From the spec: "Wait until any invocations of this algorithm started before this one have completed." + // So if we're currently running a task, we'll need to delay this invocation. + if (currentlyRunningATask) { + // Delay by doing a setTimeout. setImmediate was tried instead, but in Firefox 7 it generated a + // "too much recursion" error. + setTimeout(runIfPresent, 0, handle); + } else { + var task = tasksByHandle[handle]; + if (task) { + currentlyRunningATask = true; + try { + run(task); + } finally { + clearImmediate(handle); + currentlyRunningATask = false; + } + } + } + } + + function installNextTickImplementation() { + registerImmediate = function(handle) { + process.nextTick(function () { runIfPresent(handle); }); + }; + } + + function canUsePostMessage() { + // The test against `importScripts` prevents this implementation from being installed inside a web worker, + // where `global.postMessage` means something completely different and can't be used for this purpose. + if (global.postMessage && !global.importScripts) { + var postMessageIsAsynchronous = true; + var oldOnMessage = global.onmessage; + global.onmessage = function() { + postMessageIsAsynchronous = false; + }; + global.postMessage("", "*"); + global.onmessage = oldOnMessage; + return postMessageIsAsynchronous; + } + } + + function installPostMessageImplementation() { + // Installs an event handler on `global` for the `message` event: see + // * https://developer.mozilla.org/en/DOM/window.postMessage + // * http://www.whatwg.org/specs/web-apps/current-work/multipage/comms.html#crossDocumentMessages + + var messagePrefix = "setImmediate$" + Math.random() + "$"; + var onGlobalMessage = function(event) { + if (event.source === global && + typeof event.data === "string" && + event.data.indexOf(messagePrefix) === 0) { + runIfPresent(+event.data.slice(messagePrefix.length)); + } + }; + + if (global.addEventListener) { + global.addEventListener("message", onGlobalMessage, false); + } else { + global.attachEvent("onmessage", onGlobalMessage); + } + + registerImmediate = function(handle) { + global.postMessage(messagePrefix + handle, "*"); + }; + } + + function installMessageChannelImplementation() { + var channel = new MessageChannel(); + channel.port1.onmessage = function(event) { + var handle = event.data; + runIfPresent(handle); + }; + + registerImmediate = function(handle) { + channel.port2.postMessage(handle); + }; + } + + function installReadyStateChangeImplementation() { + var html = doc.documentElement; + registerImmediate = function(handle) { + // Create a <script> element; its readystatechange event will be fired asynchronously once it is inserted + // into the document. Do so, thus queuing up the task. Remember to clean up once it's been called. + var script = doc.createElement("script"); + script.onreadystatechange = function () { + runIfPresent(handle); + script.onreadystatechange = null; + html.removeChild(script); + script = null; + }; + html.appendChild(script); + }; + } + + function installSetTimeoutImplementation() { + registerImmediate = function(handle) { + setTimeout(runIfPresent, 0, handle); + }; + } + + // If supported, we should attach to the prototype of global, since that is where setTimeout et al. live. + var attachTo = Object.getPrototypeOf && Object.getPrototypeOf(global); + attachTo = attachTo && attachTo.setTimeout ? attachTo : global; + + // Don't get fooled by e.g. browserify environments. + if ({}.toString.call(global.process) === "[object process]") { + // For Node.js before 0.9 + installNextTickImplementation(); + + } else if (canUsePostMessage()) { + // For non-IE10 modern browsers + installPostMessageImplementation(); + + } else if (global.MessageChannel) { + // For web workers, where supported + installMessageChannelImplementation(); + + } else if (doc && "onreadystatechange" in doc.createElement("script")) { + // For IE 6–8 + installReadyStateChangeImplementation(); + + } else { + // For older browsers + installSetTimeoutImplementation(); + } + + attachTo.setImmediate = setImmediate; + attachTo.clearImmediate = clearImmediate; +}(typeof self === "undefined" ? typeof global === "undefined" ? this : global : self)); + +/* WEBPACK VAR INJECTION */}.call(this, __webpack_require__(/*! ./../webpack/buildin/global.js */ "./node_modules/webpack/buildin/global.js"), __webpack_require__(/*! ./../process/browser.js */ "./node_modules/process/browser.js"))) + +/***/ }), + +/***/ "./node_modules/style-loader/lib/addStyles.js": +/*!****************************************************!*\ + !*** ./node_modules/style-loader/lib/addStyles.js ***! + \****************************************************/ +/*! no static exports found */ +/***/ (function(module, exports, __webpack_require__) { + +/* + MIT License http://www.opensource.org/licenses/mit-license.php + Author Tobias Koppers @sokra +*/ + +var stylesInDom = {}; + +var memoize = function (fn) { + var memo; + + return function () { + if (typeof memo === "undefined") memo = fn.apply(this, arguments); + return memo; + }; +}; + +var isOldIE = memoize(function () { + // Test for IE <= 9 as proposed by Browserhacks + // @see http://browserhacks.com/#hack-e71d8692f65334173fee715c222cb805 + // Tests for existence of standard globals is to allow style-loader + // to operate correctly into non-standard environments + // @see https://github.com/webpack-contrib/style-loader/issues/177 + return window && document && document.all && !window.atob; +}); + +var getTarget = function (target, parent) { + if (parent){ + return parent.querySelector(target); + } + return document.querySelector(target); +}; + +var getElement = (function (fn) { + var memo = {}; + + return function(target, parent) { + // If passing function in options, then use it for resolve "head" element. + // Useful for Shadow Root style i.e + // { + // insertInto: function () { return document.querySelector("#foo").shadowRoot } + // } + if (typeof target === 'function') { + return target(); + } + if (typeof memo[target] === "undefined") { + var styleTarget = getTarget.call(this, target, parent); + // Special case to return head of iframe instead of iframe itself + if (window.HTMLIFrameElement && styleTarget instanceof window.HTMLIFrameElement) { + try { + // This will throw an exception if access to iframe is blocked + // due to cross-origin restrictions + styleTarget = styleTarget.contentDocument.head; + } catch(e) { + styleTarget = null; + } + } + memo[target] = styleTarget; + } + return memo[target] + }; +})(); + +var singleton = null; +var singletonCounter = 0; +var stylesInsertedAtTop = []; + +var fixUrls = __webpack_require__(/*! ./urls */ "./node_modules/style-loader/lib/urls.js"); + +module.exports = function(list, options) { + if (typeof DEBUG !== "undefined" && DEBUG) { + if (typeof document !== "object") throw new Error("The style-loader cannot be used in a non-browser environment"); + } + + options = options || {}; + + options.attrs = typeof options.attrs === "object" ? options.attrs : {}; + + // Force single-tag solution on IE6-9, which has a hard limit on the # of <style> + // tags it will allow on a page + if (!options.singleton && typeof options.singleton !== "boolean") options.singleton = isOldIE(); + + // By default, add <style> tags to the <head> element + if (!options.insertInto) options.insertInto = "head"; + + // By default, add <style> tags to the bottom of the target + if (!options.insertAt) options.insertAt = "bottom"; + + var styles = listToStyles(list, options); + + addStylesToDom(styles, options); + + return function update (newList) { + var mayRemove = []; + + for (var i = 0; i < styles.length; i++) { + var item = styles[i]; + var domStyle = stylesInDom[item.id]; + + domStyle.refs--; + mayRemove.push(domStyle); + } + + if(newList) { + var newStyles = listToStyles(newList, options); + addStylesToDom(newStyles, options); + } + + for (var i = 0; i < mayRemove.length; i++) { + var domStyle = mayRemove[i]; + + if(domStyle.refs === 0) { + for (var j = 0; j < domStyle.parts.length; j++) domStyle.parts[j](); + + delete stylesInDom[domStyle.id]; + } + } + }; +}; + +function addStylesToDom (styles, options) { + for (var i = 0; i < styles.length; i++) { + var item = styles[i]; + var domStyle = stylesInDom[item.id]; + + if(domStyle) { + domStyle.refs++; + + for(var j = 0; j < domStyle.parts.length; j++) { + domStyle.parts[j](item.parts[j]); + } + + for(; j < item.parts.length; j++) { + domStyle.parts.push(addStyle(item.parts[j], options)); + } + } else { + var parts = []; + + for(var j = 0; j < item.parts.length; j++) { + parts.push(addStyle(item.parts[j], options)); + } + + stylesInDom[item.id] = {id: item.id, refs: 1, parts: parts}; + } + } +} + +function listToStyles (list, options) { + var styles = []; + var newStyles = {}; + + for (var i = 0; i < list.length; i++) { + var item = list[i]; + var id = options.base ? item[0] + options.base : item[0]; + var css = item[1]; + var media = item[2]; + var sourceMap = item[3]; + var part = {css: css, media: media, sourceMap: sourceMap}; + + if(!newStyles[id]) styles.push(newStyles[id] = {id: id, parts: [part]}); + else newStyles[id].parts.push(part); + } + + return styles; +} + +function insertStyleElement (options, style) { + var target = getElement(options.insertInto) + + if (!target) { + throw new Error("Couldn't find a style target. This probably means that the value for the 'insertInto' parameter is invalid."); + } + + var lastStyleElementInsertedAtTop = stylesInsertedAtTop[stylesInsertedAtTop.length - 1]; + + if (options.insertAt === "top") { + if (!lastStyleElementInsertedAtTop) { + target.insertBefore(style, target.firstChild); + } else if (lastStyleElementInsertedAtTop.nextSibling) { + target.insertBefore(style, lastStyleElementInsertedAtTop.nextSibling); + } else { + target.appendChild(style); + } + stylesInsertedAtTop.push(style); + } else if (options.insertAt === "bottom") { + target.appendChild(style); + } else if (typeof options.insertAt === "object" && options.insertAt.before) { + var nextSibling = getElement(options.insertAt.before, target); + target.insertBefore(style, nextSibling); + } else { + throw new Error("[Style Loader]\n\n Invalid value for parameter 'insertAt' ('options.insertAt') found.\n Must be 'top', 'bottom', or Object.\n (https://github.com/webpack-contrib/style-loader#insertat)\n"); + } +} + +function removeStyleElement (style) { + if (style.parentNode === null) return false; + style.parentNode.removeChild(style); + + var idx = stylesInsertedAtTop.indexOf(style); + if(idx >= 0) { + stylesInsertedAtTop.splice(idx, 1); + } +} + +function createStyleElement (options) { + var style = document.createElement("style"); + + if(options.attrs.type === undefined) { + options.attrs.type = "text/css"; + } + + if(options.attrs.nonce === undefined) { + var nonce = getNonce(); + if (nonce) { + options.attrs.nonce = nonce; + } + } + + addAttrs(style, options.attrs); + insertStyleElement(options, style); + + return style; +} + +function createLinkElement (options) { + var link = document.createElement("link"); + + if(options.attrs.type === undefined) { + options.attrs.type = "text/css"; + } + options.attrs.rel = "stylesheet"; + + addAttrs(link, options.attrs); + insertStyleElement(options, link); + + return link; +} + +function addAttrs (el, attrs) { + Object.keys(attrs).forEach(function (key) { + el.setAttribute(key, attrs[key]); + }); +} + +function getNonce() { + if (false) {} + + return __webpack_require__.nc; +} + +function addStyle (obj, options) { + var style, update, remove, result; + + // If a transform function was defined, run it on the css + if (options.transform && obj.css) { + result = typeof options.transform === 'function' + ? options.transform(obj.css) + : options.transform.default(obj.css); + + if (result) { + // If transform returns a value, use that instead of the original css. + // This allows running runtime transformations on the css. + obj.css = result; + } else { + // If the transform function returns a falsy value, don't add this css. + // This allows conditional loading of css + return function() { + // noop + }; + } + } + + if (options.singleton) { + var styleIndex = singletonCounter++; + + style = singleton || (singleton = createStyleElement(options)); + + update = applyToSingletonTag.bind(null, style, styleIndex, false); + remove = applyToSingletonTag.bind(null, style, styleIndex, true); + + } else if ( + obj.sourceMap && + typeof URL === "function" && + typeof URL.createObjectURL === "function" && + typeof URL.revokeObjectURL === "function" && + typeof Blob === "function" && + typeof btoa === "function" + ) { + style = createLinkElement(options); + update = updateLink.bind(null, style, options); + remove = function () { + removeStyleElement(style); + + if(style.href) URL.revokeObjectURL(style.href); + }; + } else { + style = createStyleElement(options); + update = applyToTag.bind(null, style); + remove = function () { + removeStyleElement(style); + }; + } + + update(obj); + + return function updateStyle (newObj) { + if (newObj) { + if ( + newObj.css === obj.css && + newObj.media === obj.media && + newObj.sourceMap === obj.sourceMap + ) { + return; + } + + update(obj = newObj); + } else { + remove(); + } + }; +} + +var replaceText = (function () { + var textStore = []; + + return function (index, replacement) { + textStore[index] = replacement; + + return textStore.filter(Boolean).join('\n'); + }; +})(); + +function applyToSingletonTag (style, index, remove, obj) { + var css = remove ? "" : obj.css; + + if (style.styleSheet) { + style.styleSheet.cssText = replaceText(index, css); + } else { + var cssNode = document.createTextNode(css); + var childNodes = style.childNodes; + + if (childNodes[index]) style.removeChild(childNodes[index]); + + if (childNodes.length) { + style.insertBefore(cssNode, childNodes[index]); + } else { + style.appendChild(cssNode); + } + } +} + +function applyToTag (style, obj) { + var css = obj.css; + var media = obj.media; + + if(media) { + style.setAttribute("media", media) + } + + if(style.styleSheet) { + style.styleSheet.cssText = css; + } else { + while(style.firstChild) { + style.removeChild(style.firstChild); + } + + style.appendChild(document.createTextNode(css)); + } +} + +function updateLink (link, options, obj) { + var css = obj.css; + var sourceMap = obj.sourceMap; + + /* + If convertToAbsoluteUrls isn't defined, but sourcemaps are enabled + and there is no publicPath defined then lets turn convertToAbsoluteUrls + on by default. Otherwise default to the convertToAbsoluteUrls option + directly + */ + var autoFixUrls = options.convertToAbsoluteUrls === undefined && sourceMap; + + if (options.convertToAbsoluteUrls || autoFixUrls) { + css = fixUrls(css); + } + + if (sourceMap) { + // http://stackoverflow.com/a/26603875 + css += "\n/*# sourceMappingURL=data:application/json;base64," + btoa(unescape(encodeURIComponent(JSON.stringify(sourceMap)))) + " */"; + } + + var blob = new Blob([css], { type: "text/css" }); + + var oldSrc = link.href; + + link.href = URL.createObjectURL(blob); + + if(oldSrc) URL.revokeObjectURL(oldSrc); +} + + +/***/ }), + +/***/ "./node_modules/style-loader/lib/urls.js": +/*!***********************************************!*\ + !*** ./node_modules/style-loader/lib/urls.js ***! + \***********************************************/ +/*! no static exports found */ +/***/ (function(module, exports) { + + +/** + * When source maps are enabled, `style-loader` uses a link element with a data-uri to + * embed the css on the page. This breaks all relative urls because now they are relative to a + * bundle instead of the current page. + * + * One solution is to only use full urls, but that may be impossible. + * + * Instead, this function "fixes" the relative urls to be absolute according to the current page location. + * + * A rudimentary test suite is located at `test/fixUrls.js` and can be run via the `npm test` command. + * + */ + +module.exports = function (css) { + // get current location + var location = typeof window !== "undefined" && window.location; + + if (!location) { + throw new Error("fixUrls requires window.location"); + } + + // blank or null? + if (!css || typeof css !== "string") { + return css; + } + + var baseUrl = location.protocol + "//" + location.host; + var currentDir = baseUrl + location.pathname.replace(/\/[^\/]*$/, "/"); + + // convert each url(...) + /* + This regular expression is just a way to recursively match brackets within + a string. + + /url\s*\( = Match on the word "url" with any whitespace after it and then a parens + ( = Start a capturing group + (?: = Start a non-capturing group + [^)(] = Match anything that isn't a parentheses + | = OR + \( = Match a start parentheses + (?: = Start another non-capturing groups + [^)(]+ = Match anything that isn't a parentheses + | = OR + \( = Match a start parentheses + [^)(]* = Match anything that isn't a parentheses + \) = Match a end parentheses + ) = End Group + *\) = Match anything and then a close parens + ) = Close non-capturing group + * = Match anything + ) = Close capturing group + \) = Match a close parens + + /gi = Get all matches, not the first. Be case insensitive. + */ + var fixedCss = css.replace(/url\s*\(((?:[^)(]|\((?:[^)(]+|\([^)(]*\))*\))*)\)/gi, function(fullMatch, origUrl) { + // strip quotes (if they exist) + var unquotedOrigUrl = origUrl + .trim() + .replace(/^"(.*)"$/, function(o, $1){ return $1; }) + .replace(/^'(.*)'$/, function(o, $1){ return $1; }); + + // already a full url? no change + if (/^(#|data:|http:\/\/|https:\/\/|file:\/\/\/|\s*$)/i.test(unquotedOrigUrl)) { + return fullMatch; + } + + // convert the url to a full url + var newUrl; + + if (unquotedOrigUrl.indexOf("//") === 0) { + //TODO: should we add protocol? + newUrl = unquotedOrigUrl; + } else if (unquotedOrigUrl.indexOf("/") === 0) { + // path should be relative to the base url + newUrl = baseUrl + unquotedOrigUrl; // already starts with '/' + } else { + // path should be relative to current directory + newUrl = currentDir + unquotedOrigUrl.replace(/^\.\//, ""); // Strip leading './' + } + + // send back the fixed url(...) + return "url(" + JSON.stringify(newUrl) + ")"; + }); + + // send back the fixed css + return fixedCss; +}; + + +/***/ }), + +/***/ "./node_modules/timers-browserify/main.js": +/*!************************************************!*\ + !*** ./node_modules/timers-browserify/main.js ***! + \************************************************/ +/*! no static exports found */ +/***/ (function(module, exports, __webpack_require__) { + +/* WEBPACK VAR INJECTION */(function(global) {var scope = (typeof global !== "undefined" && global) || + (typeof self !== "undefined" && self) || + window; +var apply = Function.prototype.apply; + +// DOM APIs, for completeness + +exports.setTimeout = function() { + return new Timeout(apply.call(setTimeout, scope, arguments), clearTimeout); +}; +exports.setInterval = function() { + return new Timeout(apply.call(setInterval, scope, arguments), clearInterval); +}; +exports.clearTimeout = +exports.clearInterval = function(timeout) { + if (timeout) { + timeout.close(); + } +}; + +function Timeout(id, clearFn) { + this._id = id; + this._clearFn = clearFn; +} +Timeout.prototype.unref = Timeout.prototype.ref = function() {}; +Timeout.prototype.close = function() { + this._clearFn.call(scope, this._id); +}; + +// Does not start the time, just sets up the members needed. +exports.enroll = function(item, msecs) { + clearTimeout(item._idleTimeoutId); + item._idleTimeout = msecs; +}; + +exports.unenroll = function(item) { + clearTimeout(item._idleTimeoutId); + item._idleTimeout = -1; +}; + +exports._unrefActive = exports.active = function(item) { + clearTimeout(item._idleTimeoutId); + + var msecs = item._idleTimeout; + if (msecs >= 0) { + item._idleTimeoutId = setTimeout(function onTimeout() { + if (item._onTimeout) + item._onTimeout(); + }, msecs); + } +}; + +// setimmediate attaches itself to the global object +__webpack_require__(/*! setimmediate */ "./node_modules/setimmediate/setImmediate.js"); +// On some exotic environments, it's not clear which object `setimmediate` was +// able to install onto. Search each possibility in the same order as the +// `setimmediate` library. +exports.setImmediate = (typeof self !== "undefined" && self.setImmediate) || + (typeof global !== "undefined" && global.setImmediate) || + (this && this.setImmediate); +exports.clearImmediate = (typeof self !== "undefined" && self.clearImmediate) || + (typeof global !== "undefined" && global.clearImmediate) || + (this && this.clearImmediate); + +/* WEBPACK VAR INJECTION */}.call(this, __webpack_require__(/*! ./../webpack/buildin/global.js */ "./node_modules/webpack/buildin/global.js"))) + +/***/ }), + +/***/ "./node_modules/vue-chessboard/dist/vue-chessboard.browser.js": +/*!********************************************************************!*\ + !*** ./node_modules/vue-chessboard/dist/vue-chessboard.browser.js ***! + \********************************************************************/ +/*! no static exports found */ +/***/ (function(module, exports, __webpack_require__) { + +!function(root,factory){ true?module.exports=factory():undefined}(this,function(){return function(modules){function __webpack_require__(moduleId){if(installedModules[moduleId])return installedModules[moduleId].exports;var module=installedModules[moduleId]={i:moduleId,l:!1,exports:{}};return modules[moduleId].call(module.exports,module,module.exports,__webpack_require__),module.l=!0,module.exports}var installedModules={};return __webpack_require__.m=modules,__webpack_require__.c=installedModules,__webpack_require__.i=function(value){return value},__webpack_require__.d=function(exports,name,getter){__webpack_require__.o(exports,name)||Object.defineProperty(exports,name,{configurable:!1,enumerable:!0,get:getter})},__webpack_require__.n=function(module){var getter=module&&module.__esModule?function(){return module.default}:function(){return module};return __webpack_require__.d(getter,"a",getter),getter},__webpack_require__.o=function(object,property){return Object.prototype.hasOwnProperty.call(object,property)},__webpack_require__.p="",__webpack_require__(__webpack_require__.s=21)}([function(module,exports,__webpack_require__){"use strict";function memo(f){var v,ret=function(){return void 0===v&&(v=f()),v};return ret.clear=function(){v=void 0},ret}function containsX(xs,x){return void 0!==xs&&-1!==xs.indexOf(x)}Object.defineProperty(exports,"__esModule",{value:!0});var cg=__webpack_require__(3);exports.colors=["white","black"],exports.invRanks=[8,7,6,5,4,3,2,1],exports.allKeys=(_a=Array.prototype).concat.apply(_a,cg.files.map(function(c){return cg.ranks.map(function(r){return c+r})})),exports.pos2key=function(pos){return exports.allKeys[8*pos[0]+pos[1]-9]},exports.key2pos=function(k){return[k.charCodeAt(0)-96,k.charCodeAt(1)-48]},exports.memo=memo,exports.timer=function(){var startAt;return{start:function(){startAt=Date.now()},cancel:function(){startAt=void 0},stop:function(){if(!startAt)return 0;var time=Date.now()-startAt;return startAt=void 0,time}}},exports.opposite=function(c){return"white"===c?"black":"white"},exports.containsX=containsX,exports.distanceSq=function(pos1,pos2){return Math.pow(pos1[0]-pos2[0],2)+Math.pow(pos1[1]-pos2[1],2)},exports.samePiece=function(p1,p2){return p1.role===p2.role&&p1.color===p2.color},exports.computeIsTrident=function(){return window.navigator.userAgent.indexOf("Trident/")>-1};var posToTranslateBase=function(pos,asWhite,xFactor,yFactor){return[(asWhite?pos[0]-1:8-pos[0])*xFactor,(asWhite?8-pos[1]:pos[1]-1)*yFactor]};exports.posToTranslateAbs=function(bounds){var xFactor=bounds.width/8,yFactor=bounds.height/8;return function(pos,asWhite){return posToTranslateBase(pos,asWhite,xFactor,yFactor)}},exports.posToTranslateRel=function(pos,asWhite){return posToTranslateBase(pos,asWhite,12.5,12.5)},exports.translateAbs=function(el,pos){el.style.transform="translate("+pos[0]+"px,"+pos[1]+"px)"},exports.translateRel=function(el,percents){el.style.left=percents[0]+"%",el.style.top=percents[1]+"%"},exports.setVisible=function(el,v){el.style.visibility=v?"visible":"hidden"},exports.eventPosition=function(e){return e.clientX||0===e.clientX?[e.clientX,e.clientY]:e.touches&&e.targetTouches[0]?[e.targetTouches[0].clientX,e.targetTouches[0].clientY]:void 0},exports.isRightButton=function(e){return 2===e.buttons||2===e.button},exports.createEl=function(tagName,className){var el=document.createElement(tagName);return className&&(el.className=className),el},exports.raf=(window.requestAnimationFrame||window.setTimeout).bind(window);var _a},function(module,exports,__webpack_require__){"use strict";function callUserFunction(f){for(var args=[],_i=1;_i<arguments.length;_i++)args[_i-1]=arguments[_i];f&&setTimeout(function(){return f.apply(void 0,args)},1)}function toggleOrientation(state){state.orientation=util_1.opposite(state.orientation),state.animation.current=state.draggable.current=state.selected=void 0}function reset(state){state.lastMove=void 0,unselect(state),unsetPremove(state),unsetPredrop(state)}function setPieces(state,pieces){for(var key in pieces){var piece=pieces[key];piece?state.pieces[key]=piece:delete state.pieces[key]}}function setCheck(state,color){if(!0===color&&(color=state.turnColor),color)for(var k in state.pieces)"king"===state.pieces[k].role&&state.pieces[k].color===color&&(state.check=k);else state.check=void 0}function setPremove(state,orig,dest,meta){unsetPredrop(state),state.premovable.current=[orig,dest],callUserFunction(state.premovable.events.set,orig,dest,meta)}function unsetPremove(state){state.premovable.current&&(state.premovable.current=void 0,callUserFunction(state.premovable.events.unset))}function setPredrop(state,role,key){unsetPremove(state),state.predroppable.current={role:role,key:key},callUserFunction(state.predroppable.events.set,role,key)}function unsetPredrop(state){var pd=state.predroppable;pd.current&&(pd.current=void 0,callUserFunction(pd.events.unset))}function tryAutoCastle(state,orig,dest){if(!state.autoCastle)return!1;var king=state.pieces[orig];if("king"!==king.role)return!1;var origPos=util_1.key2pos(orig);if(5!==origPos[0])return!1;if(1!==origPos[1]&&8!==origPos[1])return!1;var oldRookPos,newRookPos,newKingPos,destPos=util_1.key2pos(dest);if(7===destPos[0]||8===destPos[0])oldRookPos=util_1.pos2key([8,origPos[1]]),newRookPos=util_1.pos2key([6,origPos[1]]),newKingPos=util_1.pos2key([7,origPos[1]]);else{if(3!==destPos[0]&&1!==destPos[0])return!1;oldRookPos=util_1.pos2key([1,origPos[1]]),newRookPos=util_1.pos2key([4,origPos[1]]),newKingPos=util_1.pos2key([3,origPos[1]])}var rook=state.pieces[oldRookPos];return"rook"===rook.role&&(delete state.pieces[orig],delete state.pieces[oldRookPos],state.pieces[newKingPos]=king,state.pieces[newRookPos]=rook,!0)}function baseMove(state,orig,dest){if(orig===dest||!state.pieces[orig])return!1;var captured=state.pieces[dest]&&state.pieces[dest].color!==state.pieces[orig].color?state.pieces[dest]:void 0;return dest==state.selected&&unselect(state),callUserFunction(state.events.move,orig,dest,captured),tryAutoCastle(state,orig,dest)||(state.pieces[dest]=state.pieces[orig],delete state.pieces[orig]),state.lastMove=[orig,dest],state.check=void 0,callUserFunction(state.events.change),captured||!0}function baseNewPiece(state,piece,key,force){if(state.pieces[key]){if(!force)return!1;delete state.pieces[key]}return callUserFunction(state.events.dropNewPiece,piece,key),state.pieces[key]=piece,state.lastMove=[key],state.check=void 0,callUserFunction(state.events.change),state.movable.dests=void 0,state.turnColor=util_1.opposite(state.turnColor),!0}function baseUserMove(state,orig,dest){var result=baseMove(state,orig,dest);return result&&(state.movable.dests=void 0,state.turnColor=util_1.opposite(state.turnColor),state.animation.current=void 0),result}function userMove(state,orig,dest){if(canMove(state,orig,dest)){var result=baseUserMove(state,orig,dest);if(result){var holdTime=state.hold.stop();unselect(state);var metadata={premove:!1,ctrlKey:state.stats.ctrlKey,holdTime:holdTime};return!0!==result&&(metadata.captured=result),callUserFunction(state.movable.events.after,orig,dest,metadata),!0}}else canPremove(state,orig,dest)?(setPremove(state,orig,dest,{ctrlKey:state.stats.ctrlKey}),unselect(state)):isMovable(state,dest)||isPremovable(state,dest)?(setSelected(state,dest),state.hold.start()):unselect(state);return!1}function dropNewPiece(state,orig,dest,force){if(canDrop(state,orig,dest)||force){var piece=state.pieces[orig];delete state.pieces[orig],baseNewPiece(state,piece,dest,force),callUserFunction(state.movable.events.afterNewPiece,piece.role,dest,{predrop:!1})}else canPredrop(state,orig,dest)?setPredrop(state,state.pieces[orig].role,dest):(unsetPremove(state),unsetPredrop(state));delete state.pieces[orig],unselect(state)}function selectSquare(state,key,force){state.selected?state.selected!==key||state.draggable.enabled?(state.selectable.enabled||force)&&state.selected!==key?userMove(state,state.selected,key)&&(state.stats.dragged=!1):state.hold.start():(unselect(state),state.hold.cancel()):(isMovable(state,key)||isPremovable(state,key))&&(setSelected(state,key),state.hold.start()),callUserFunction(state.events.select,key)}function setSelected(state,key){state.selected=key,isPremovable(state,key)?state.premovable.dests=premove_1.default(state.pieces,key,state.premovable.castle):state.premovable.dests=void 0}function unselect(state){state.selected=void 0,state.premovable.dests=void 0,state.hold.cancel()}function isMovable(state,orig){var piece=state.pieces[orig];return piece&&("both"===state.movable.color||state.movable.color===piece.color&&state.turnColor===piece.color)}function canMove(state,orig,dest){return orig!==dest&&isMovable(state,orig)&&(state.movable.free||!!state.movable.dests&&util_1.containsX(state.movable.dests[orig],dest))}function canDrop(state,orig,dest){var piece=state.pieces[orig];return piece&&dest&&(orig===dest||!state.pieces[dest])&&("both"===state.movable.color||state.movable.color===piece.color&&state.turnColor===piece.color)}function isPremovable(state,orig){var piece=state.pieces[orig];return piece&&state.premovable.enabled&&state.movable.color===piece.color&&state.turnColor!==piece.color}function canPremove(state,orig,dest){return orig!==dest&&isPremovable(state,orig)&&util_1.containsX(premove_1.default(state.pieces,orig,state.premovable.castle),dest)}function canPredrop(state,orig,dest){var piece=state.pieces[orig];return piece&&dest&&(!state.pieces[dest]||state.pieces[dest].color!==state.movable.color)&&state.predroppable.enabled&&("pawn"!==piece.role||"1"!==dest[1]&&"8"!==dest[1])&&state.movable.color===piece.color&&state.turnColor!==piece.color}function isDraggable(state,orig){var piece=state.pieces[orig];return piece&&state.draggable.enabled&&("both"===state.movable.color||state.movable.color===piece.color&&(state.turnColor===piece.color||state.premovable.enabled))}function playPremove(state){var move=state.premovable.current;if(!move)return!1;var orig=move[0],dest=move[1],success=!1;if(canMove(state,orig,dest)){var result=baseUserMove(state,orig,dest);if(result){var metadata={premove:!0};!0!==result&&(metadata.captured=result),callUserFunction(state.movable.events.after,orig,dest,metadata),success=!0}}return unsetPremove(state),success}function playPredrop(state,validate){var drop=state.predroppable.current,success=!1;if(!drop)return!1;if(validate(drop)){baseNewPiece(state,{role:drop.role,color:state.movable.color},drop.key)&&(callUserFunction(state.movable.events.afterNewPiece,drop.role,drop.key,{predrop:!0}),success=!0)}return unsetPredrop(state),success}function cancelMove(state){unsetPremove(state),unsetPredrop(state),unselect(state)}function stop(state){state.movable.color=state.movable.dests=state.animation.current=void 0,cancelMove(state)}function getKeyAtDomPos(pos,asWhite,bounds){var file=Math.ceil((pos[0]-bounds.left)/bounds.width*8);asWhite||(file=9-file);var rank=Math.ceil(8-(pos[1]-bounds.top)/bounds.height*8);return asWhite||(rank=9-rank),file>0&&file<9&&rank>0&&rank<9?util_1.pos2key([file,rank]):void 0}Object.defineProperty(exports,"__esModule",{value:!0});var util_1=__webpack_require__(0),premove_1=__webpack_require__(16);exports.callUserFunction=callUserFunction,exports.toggleOrientation=toggleOrientation,exports.reset=reset,exports.setPieces=setPieces,exports.setCheck=setCheck,exports.unsetPremove=unsetPremove,exports.unsetPredrop=unsetPredrop,exports.baseMove=baseMove,exports.baseNewPiece=baseNewPiece,exports.userMove=userMove,exports.dropNewPiece=dropNewPiece,exports.selectSquare=selectSquare,exports.setSelected=setSelected,exports.unselect=unselect,exports.canMove=canMove,exports.isDraggable=isDraggable,exports.playPremove=playPremove,exports.playPredrop=playPredrop,exports.cancelMove=cancelMove,exports.stop=stop,exports.getKeyAtDomPos=getKeyAtDomPos},function(module,exports,__webpack_require__){"use strict";function read(fen){"start"===fen&&(fen=exports.initial);for(var pieces={},row=8,col=0,_i=0,fen_1=fen;_i<fen_1.length;_i++){var c=fen_1[_i];switch(c){case" ":return pieces;case"/":if(0===--row)return pieces;col=0;break;case"~":pieces[util_1.pos2key([col,row])].promoted=!0;break;default:var nb=c.charCodeAt(0);if(nb<57)col+=nb-48;else{++col;var role=c.toLowerCase();pieces[util_1.pos2key([col,row])]={role:roles[role],color:c===role?"black":"white"}}}}return pieces}function write(pieces){var piece,letter;return util_1.invRanks.map(function(y){return cg.ranks.map(function(x){return piece=pieces[util_1.pos2key([x,y])],piece?(letter=letters[piece.role],"white"===piece.color?letter.toUpperCase():letter):"1"}).join("")}).join("/").replace(/1{2,}/g,function(s){return s.length.toString()})}Object.defineProperty(exports,"__esModule",{value:!0});var util_1=__webpack_require__(0),cg=__webpack_require__(3);exports.initial="rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR";var roles={p:"pawn",r:"rook",n:"knight",b:"bishop",q:"queen",k:"king"},letters={pawn:"p",rook:"r",knight:"n",bishop:"b",queen:"q",king:"k"};exports.read=read,exports.write=write},function(module,exports,__webpack_require__){"use strict";Object.defineProperty(exports,"__esModule",{value:!0}),exports.files=["a","b","c","d","e","f","g","h"],exports.ranks=[1,2,3,4,5,6,7,8]},function(module,exports,__webpack_require__){"use strict";function anim(mutation,state){return state.animation.enabled?animate(mutation,state):render(mutation,state)}function render(mutation,state){var result=mutation(state);return state.dom.redraw(),result}function makePiece(key,piece){return{key:key,pos:util.key2pos(key),piece:piece}}function closer(piece,pieces){return pieces.sort(function(p1,p2){return util.distanceSq(piece.pos,p1.pos)-util.distanceSq(piece.pos,p2.pos)})[0]}function computePlan(prevPieces,current){var curP,preP,i,vector,anims={},animedOrigs=[],fadings={},missings=[],news=[],prePieces={};for(i in prevPieces)prePieces[i]=makePiece(i,prevPieces[i]);for(var _i=0,_a=util.allKeys;_i<_a.length;_i++){var key=_a[_i];curP=current.pieces[key],preP=prePieces[key],curP?preP?util.samePiece(curP,preP.piece)||(missings.push(preP),news.push(makePiece(key,curP))):news.push(makePiece(key,curP)):preP&&missings.push(preP)}return news.forEach(function(newP){(preP=closer(newP,missings.filter(function(p){return util.samePiece(newP.piece,p.piece)})))&&(vector=[preP.pos[0]-newP.pos[0],preP.pos[1]-newP.pos[1]],anims[newP.key]=vector.concat(vector),animedOrigs.push(preP.key))}),missings.forEach(function(p){util.containsX(animedOrigs,p.key)||current.items&¤t.items(p.pos,p.key)||(fadings[p.key]=p.piece)}),{anims:anims,fadings:fadings}}function step(state,now){var cur=state.animation.current;if(void 0===cur)return void(state.dom.destroyed||state.dom.redrawNow());var rest=1-(now-cur.start)*cur.frequency;if(rest<=0)state.animation.current=void 0,state.dom.redrawNow();else{var ease=easing(rest);for(var i in cur.plan.anims){var cfg=cur.plan.anims[i];cfg[2]=cfg[0]*ease,cfg[3]=cfg[1]*ease}state.dom.redrawNow(!0),util.raf(function(now){return void 0===now&&(now=perf.now()),step(state,now)})}}function animate(mutation,state){var prevPieces=__assign({},state.pieces),result=mutation(state),plan=computePlan(prevPieces,state);if(isObjectEmpty(plan.anims)&&isObjectEmpty(plan.fadings))state.dom.redraw();else{var alreadyRunning=state.animation.current&&state.animation.current.start;state.animation.current={start:perf.now(),frequency:1/state.animation.duration,plan:plan},alreadyRunning||step(state,perf.now())}return result}function isObjectEmpty(o){for(var _ in o)return!1;return!0}function easing(t){return t<.5?4*t*t*t:(t-1)*(2*t-2)*(2*t-2)+1}var __assign=this&&this.__assign||Object.assign||function(t){for(var s,i=1,n=arguments.length;i<n;i++){s=arguments[i];for(var p in s)Object.prototype.hasOwnProperty.call(s,p)&&(t[p]=s[p])}return t};Object.defineProperty(exports,"__esModule",{value:!0});var util=__webpack_require__(0);exports.anim=anim,exports.render=render;var perf=void 0!==window.performance?window.performance:Date},function(module,exports,__webpack_require__){"use strict";function configure(state,config){if(config.movable&&config.movable.dests&&(state.movable.dests=void 0),merge(state,config),config.fen&&(state.pieces=fen_1.read(config.fen),state.drawable.shapes=[]),config.hasOwnProperty("check")&&board_1.setCheck(state,config.check||!1),config.hasOwnProperty("lastMove")&&!config.lastMove?state.lastMove=void 0:config.lastMove&&(state.lastMove=config.lastMove),state.selected&&board_1.setSelected(state,state.selected),(!state.animation.duration||state.animation.duration<100)&&(state.animation.enabled=!1),!state.movable.rookCastle&&state.movable.dests){var rank_1="white"===state.movable.color?1:8,kingStartPos="e"+rank_1,dests_1=state.movable.dests[kingStartPos];if(!dests_1||"king"!==state.pieces[kingStartPos].role)return;state.movable.dests[kingStartPos]=dests_1.filter(function(d){return!(d==="a"+rank_1&&-1!==dests_1.indexOf("c"+rank_1)||d==="h"+rank_1&&-1!==dests_1.indexOf("g"+rank_1))})}}function merge(base,extend){for(var key in extend)isObject(base[key])&&isObject(extend[key])?merge(base[key],extend[key]):base[key]=extend[key]}function isObject(o){return"object"===(void 0===o?"undefined":_typeof(o))}var _typeof="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(obj){return typeof obj}:function(obj){return obj&&"function"==typeof Symbol&&obj.constructor===Symbol&&obj!==Symbol.prototype?"symbol":typeof obj};Object.defineProperty(exports,"__esModule",{value:!0});var board_1=__webpack_require__(1),fen_1=__webpack_require__(2);exports.configure=configure},function(module,exports,__webpack_require__){"use strict";function start(s,e){if(!(void 0!==e.button&&0!==e.button||e.touches&&e.touches.length>1)){e.preventDefault();var asWhite="white"===s.orientation,bounds=s.dom.bounds(),position=util.eventPosition(e),orig=board.getKeyAtDomPos(position,asWhite,bounds);if(orig){var piece=s.pieces[orig],previouslySelected=s.selected;previouslySelected||!s.drawable.enabled||!s.drawable.eraseOnClick&&piece&&piece.color===s.turnColor||draw_1.clear(s);var hadPremove=!!s.premovable.current,hadPredrop=!!s.predroppable.current;s.stats.ctrlKey=e.ctrlKey,s.selected&&board.canMove(s,s.selected,orig)?anim_1.anim(function(state){return board.selectSquare(state,orig)},s):board.selectSquare(s,orig);var stillSelected=s.selected===orig,element=pieceElementByKey(s,orig);if(piece&&element&&stillSelected&&board.isDraggable(s,orig)){var squareBounds=computeSquareBounds(orig,asWhite,bounds);s.draggable.current={orig:orig,origPos:util.key2pos(orig),piece:piece,rel:position,epos:position,pos:[0,0],dec:s.draggable.centerPiece?[position[0]-(squareBounds.left+squareBounds.width/2),position[1]-(squareBounds.top+squareBounds.height/2)]:[0,0],started:s.draggable.autoDistance&&s.stats.dragged,element:element,previouslySelected:previouslySelected,originTarget:e.target},element.cgDragging=!0,element.classList.add("dragging");var ghost=s.dom.elements.ghost;ghost&&(ghost.className="ghost "+piece.color+" "+piece.role,util.translateAbs(ghost,util.posToTranslateAbs(bounds)(util.key2pos(orig),asWhite)),util.setVisible(ghost,!0)),processDrag(s)}else hadPremove&&board.unsetPremove(s),hadPredrop&&board.unsetPredrop(s);s.dom.redraw()}}}function dragNewPiece(s,piece,e,force){s.pieces.a0=piece,s.dom.redraw();var position=util.eventPosition(e),asWhite="white"===s.orientation,bounds=s.dom.bounds(),squareBounds=computeSquareBounds("a0",asWhite,bounds),rel=[(asWhite?0:7)*squareBounds.width+bounds.left,(asWhite?8:-1)*squareBounds.height+bounds.top];s.draggable.current={orig:"a0",origPos:util.key2pos("a0"),piece:piece,rel:rel,epos:position,pos:[position[0]-rel[0],position[1]-rel[1]],dec:[-squareBounds.width/2,-squareBounds.height/2],started:!0,element:function(){return pieceElementByKey(s,"a0")},originTarget:e.target,newPiece:!0,force:force||!1},processDrag(s)}function processDrag(s){util.raf(function(){var cur=s.draggable.current;if(cur){s.animation.current&&s.animation.current.plan.anims[cur.orig]&&(s.animation.current=void 0);var origPiece=s.pieces[cur.orig];if(origPiece&&util.samePiece(origPiece,cur.piece)){if(!cur.started&&util.distanceSq(cur.epos,cur.rel)>=Math.pow(s.draggable.distance,2)&&(cur.started=!0),cur.started){if("function"==typeof cur.element){var found=cur.element();if(!found)return;cur.element=found,cur.element.cgDragging=!0,cur.element.classList.add("dragging")}var asWhite="white"===s.orientation,bounds=s.dom.bounds();cur.pos=[cur.epos[0]-cur.rel[0],cur.epos[1]-cur.rel[1]];var translation=util.posToTranslateAbs(bounds)(cur.origPos,asWhite);translation[0]+=cur.pos[0]+cur.dec[0],translation[1]+=cur.pos[1]+cur.dec[1],util.translateAbs(cur.element,translation)}}else cancel(s);processDrag(s)}})}function move(s,e){s.draggable.current&&(!e.touches||e.touches.length<2)&&(s.draggable.current.epos=util.eventPosition(e))}function end(s,e){var cur=s.draggable.current;if(cur){if("touchend"===e.type&&cur&&cur.originTarget!==e.target&&!cur.newPiece)return void(s.draggable.current=void 0);board.unsetPremove(s),board.unsetPredrop(s);var eventPos=util.eventPosition(e)||cur.epos,dest=board.getKeyAtDomPos(eventPos,"white"===s.orientation,s.dom.bounds());dest&&cur.started?cur.newPiece?board.dropNewPiece(s,cur.orig,dest,cur.force):(s.stats.ctrlKey=e.ctrlKey,board.userMove(s,cur.orig,dest)&&(s.stats.dragged=!0)):cur.newPiece?delete s.pieces[cur.orig]:s.draggable.deleteOnDropOff&&(delete s.pieces[cur.orig],board.callUserFunction(s.events.change)),!cur||cur.orig!==cur.previouslySelected||cur.orig!==dest&&dest?s.selectable.enabled||board.unselect(s):board.unselect(s),removeDragElements(s),s.draggable.current=void 0,s.dom.redraw()}}function cancel(s){var cur=s.draggable.current;cur&&(cur.newPiece&&delete s.pieces[cur.orig],s.draggable.current=void 0,board.unselect(s),removeDragElements(s),s.dom.redraw())}function removeDragElements(s){var e=s.dom.elements;e.ghost&&util.setVisible(e.ghost,!1)}function computeSquareBounds(key,asWhite,bounds){var pos=util.key2pos(key);return asWhite||(pos[0]=9-pos[0],pos[1]=9-pos[1]),{left:bounds.left+bounds.width*(pos[0]-1)/8,top:bounds.top+bounds.height*(8-pos[1])/8,width:bounds.width/8,height:bounds.height/8}}function pieceElementByKey(s,key){for(var el=s.dom.elements.board.firstChild;el;){if(el.cgKey===key&&"PIECE"===el.tagName)return el;el=el.nextSibling}}Object.defineProperty(exports,"__esModule",{value:!0});var board=__webpack_require__(1),util=__webpack_require__(0),draw_1=__webpack_require__(7),anim_1=__webpack_require__(4);exports.start=start,exports.dragNewPiece=dragNewPiece,exports.move=move,exports.end=end,exports.cancel=cancel},function(module,exports,__webpack_require__){"use strict";function start(state,e){if(!(e.touches&&e.touches.length>1)){e.stopPropagation(),e.preventDefault(),e.ctrlKey?board_1.unselect(state):board_1.cancelMove(state);var position=util_1.eventPosition(e),orig=board_1.getKeyAtDomPos(position,"white"===state.orientation,state.dom.bounds());orig&&(state.drawable.current={orig:orig,pos:position,brush:eventBrush(e)},processDraw(state))}}function processDraw(state){util_1.raf(function(){var cur=state.drawable.current;if(cur){var mouseSq=board_1.getKeyAtDomPos(cur.pos,"white"===state.orientation,state.dom.bounds());mouseSq!==cur.mouseSq&&(cur.mouseSq=mouseSq,cur.dest=mouseSq!==cur.orig?mouseSq:void 0,state.dom.redrawNow()),processDraw(state)}})}function move(state,e){state.drawable.current&&(state.drawable.current.pos=util_1.eventPosition(e))}function end(state){var cur=state.drawable.current;cur&&(cur.mouseSq&&addShape(state.drawable,cur),cancel(state))}function cancel(state){state.drawable.current&&(state.drawable.current=void 0,state.dom.redraw())}function clear(state){state.drawable.shapes.length&&(state.drawable.shapes=[],state.dom.redraw(),onChange(state.drawable))}function eventBrush(e){var a=e.shiftKey&&util_1.isRightButton(e)?1:0,b=e.altKey?2:0;return brushes[a+b]}function not(f){return function(x){return!f(x)}}function addShape(drawable,cur){var sameShape=function(s){return s.orig===cur.orig&&s.dest===cur.dest},similar=drawable.shapes.filter(sameShape)[0];similar&&(drawable.shapes=drawable.shapes.filter(not(sameShape))),similar&&similar.brush===cur.brush||drawable.shapes.push(cur),onChange(drawable)}function onChange(drawable){drawable.onChange&&drawable.onChange(drawable.shapes)}Object.defineProperty(exports,"__esModule",{value:!0});var board_1=__webpack_require__(1),util_1=__webpack_require__(0),brushes=["green","red","blue","yellow"];exports.start=start,exports.processDraw=processDraw,exports.move=move,exports.end=end,exports.cancel=cancel,exports.clear=clear},function(module,exports,__webpack_require__){"use strict";function createElement(tagName){return document.createElementNS("http://www.w3.org/2000/svg",tagName)}function renderSvg(state,root){var d=state.drawable,curD=d.current,cur=curD&&curD.mouseSq?curD:void 0,arrowDests={};d.shapes.concat(d.autoShapes).concat(cur?[cur]:[]).forEach(function(s){s.dest&&(arrowDests[s.dest]=(arrowDests[s.dest]||0)+1)});var shapes=d.shapes.concat(d.autoShapes).map(function(s){return{shape:s,current:!1,hash:shapeHash(s,arrowDests,!1)}});cur&&shapes.push({shape:cur,current:!0,hash:shapeHash(cur,arrowDests,!0)});var fullHash=shapes.map(function(sc){return sc.hash}).join("");if(fullHash!==state.drawable.prevSvgHash){state.drawable.prevSvgHash=fullHash;var defsEl=root.firstChild;syncDefs(d,shapes,defsEl),syncShapes(state,shapes,d.brushes,arrowDests,root,defsEl)}}function syncDefs(d,shapes,defsEl){var brush,brushes={};shapes.forEach(function(s){s.shape.dest&&(brush=d.brushes[s.shape.brush],s.shape.modifiers&&(brush=makeCustomBrush(brush,s.shape.modifiers)),brushes[brush.key]=brush)});for(var keysInDom={},el=defsEl.firstChild;el;)keysInDom[el.getAttribute("cgKey")]=!0,el=el.nextSibling;for(var key in brushes)keysInDom[key]||defsEl.appendChild(renderMarker(brushes[key]))}function syncShapes(state,shapes,brushes,arrowDests,root,defsEl){void 0===isTrident&&(isTrident=util_1.computeIsTrident());var bounds=state.dom.bounds(),hashesInDom={},toRemove=[];shapes.forEach(function(sc){hashesInDom[sc.hash]=!1});for(var elHash,el=defsEl.nextSibling;el;)elHash=el.getAttribute("cgHash"),hashesInDom.hasOwnProperty(elHash)?hashesInDom[elHash]=!0:toRemove.push(el),el=el.nextSibling;toRemove.forEach(function(el){return root.removeChild(el)}),shapes.forEach(function(sc){hashesInDom[sc.hash]||root.appendChild(renderShape(state,sc,brushes,arrowDests,bounds))})}function shapeHash(_a,arrowDests,current){var orig=_a.orig,dest=_a.dest,brush=_a.brush,piece=_a.piece,modifiers=_a.modifiers;return[current,orig,dest,brush,dest&&arrowDests[dest]>1,piece&&pieceHash(piece),modifiers&&modifiersHash(modifiers)].filter(function(x){return x}).join("")}function pieceHash(piece){return[piece.color,piece.role,piece.scale].filter(function(x){return x}).join("")}function modifiersHash(m){return""+(m.lineWidth||"")}function renderShape(state,_a,brushes,arrowDests,bounds){var el,shape=_a.shape,current=_a.current,hash=_a.hash;if(shape.piece)el=renderPiece(state.drawable.pieces.baseUrl,orient(util_1.key2pos(shape.orig),state.orientation),shape.piece,bounds);else{var orig=orient(util_1.key2pos(shape.orig),state.orientation);if(shape.orig&&shape.dest){var brush=brushes[shape.brush];shape.modifiers&&(brush=makeCustomBrush(brush,shape.modifiers)),el=renderArrow(brush,orig,orient(util_1.key2pos(shape.dest),state.orientation),current,arrowDests[shape.dest]>1,bounds)}else el=renderCircle(brushes[shape.brush],orig,current,bounds)}return el.setAttribute("cgHash",hash),el}function renderCircle(brush,pos,current,bounds){var o=pos2px(pos,bounds),widths=circleWidth(bounds),radius=(bounds.width+bounds.height)/32;return setAttributes(createElement("circle"),{stroke:brush.color,"stroke-width":widths[current?0:1],fill:"none",opacity:opacity(brush,current),cx:o[0],cy:o[1],r:radius-widths[1]/2})}function renderArrow(brush,orig,dest,current,shorten,bounds){var m=arrowMargin(bounds,shorten&&!current),a=pos2px(orig,bounds),b=pos2px(dest,bounds),dx=b[0]-a[0],dy=b[1]-a[1],angle=Math.atan2(dy,dx),xo=Math.cos(angle)*m,yo=Math.sin(angle)*m;return setAttributes(createElement("line"),{stroke:brush.color,"stroke-width":lineWidth(brush,current,bounds),"stroke-linecap":"round","marker-end":isTrident?void 0:"url(#arrowhead-"+brush.key+")",opacity:opacity(brush,current),x1:a[0],y1:a[1],x2:b[0]-xo,y2:b[1]-yo})}function renderPiece(baseUrl,pos,piece,bounds){var o=pos2px(pos,bounds),size=bounds.width/8*(piece.scale||1),name=piece.color[0]+("knight"===piece.role?"n":piece.role[0]).toUpperCase();return setAttributes(createElement("image"),{className:piece.role+" "+piece.color,x:o[0]-size/2,y:o[1]-size/2,width:size,height:size,href:baseUrl+name+".svg"})}function renderMarker(brush){var marker=setAttributes(createElement("marker"),{id:"arrowhead-"+brush.key,orient:"auto",markerWidth:4,markerHeight:8,refX:2.05,refY:2.01});return marker.appendChild(setAttributes(createElement("path"),{d:"M0,0 V4 L3,2 Z",fill:brush.color})),marker.setAttribute("cgKey",brush.key),marker}function setAttributes(el,attrs){for(var key in attrs)el.setAttribute(key,attrs[key]);return el}function orient(pos,color){return"white"===color?pos:[9-pos[0],9-pos[1]]}function makeCustomBrush(base,modifiers){var brush={color:base.color,opacity:Math.round(10*base.opacity)/10,lineWidth:Math.round(modifiers.lineWidth||base.lineWidth)};return brush.key=[base.key,modifiers.lineWidth].filter(function(x){return x}).join(""),brush}function circleWidth(bounds){var base=bounds.width/512;return[3*base,4*base]}function lineWidth(brush,current,bounds){return(brush.lineWidth||10)*(current?.85:1)/512*bounds.width}function opacity(brush,current){return(brush.opacity||1)*(current?.9:1)}function arrowMargin(bounds,shorten){return isTrident?0:(shorten?20:10)/512*bounds.width}function pos2px(pos,bounds){return[(pos[0]-.5)*bounds.width/8,(8.5-pos[1])*bounds.height/8]}Object.defineProperty(exports,"__esModule",{value:!0});var util_1=__webpack_require__(0);exports.createElement=createElement;var isTrident;exports.renderSvg=renderSvg},function(module,exports){var g,_typeof="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(obj){return typeof obj}:function(obj){return obj&&"function"==typeof Symbol&&obj.constructor===Symbol&&obj!==Symbol.prototype?"symbol":typeof obj};g=function(){return this}();try{g=g||Function("return this")()||(0,eval)("this")}catch(e){"object"===("undefined"==typeof window?"undefined":_typeof(window))&&(g=window)}module.exports=g},function(module,exports,__webpack_require__){var Component=__webpack_require__(23)(__webpack_require__(22),__webpack_require__(24),null,null);module.exports=Component.exports},function(module,exports,__webpack_require__){var __WEBPACK_AMD_DEFINE_RESULT__,_typeof="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(obj){return typeof obj}:function(obj){return obj&&"function"==typeof Symbol&&obj.constructor===Symbol&&obj!==Symbol.prototype?"symbol":typeof obj},Chess=function(fen){function _clear(){board=new Array(128),kings={w:EMPTY,b:EMPTY},_turn=WHITE,castling={w:0,b:0},ep_square=EMPTY,half_moves=0,move_number=1,_history=[],header={},update_setup(generate_fen())}function _reset(){_load(DEFAULT_POSITION)}function _load(fen){var tokens=fen.split(/\s+/),position=tokens[0],square=0;if(!_validate_fen(fen).valid)return!1;_clear();for(var i=0;i<position.length;i++){var piece=position.charAt(i);if("/"===piece)square+=8;else if(is_digit(piece))square+=parseInt(piece,10);else{var color=piece<"a"?WHITE:BLACK;_put({type:piece.toLowerCase(),color:color},algebraic(square)),square++}}return _turn=tokens[1],tokens[2].indexOf("K")>-1&&(castling.w|=BITS.KSIDE_CASTLE),tokens[2].indexOf("Q")>-1&&(castling.w|=BITS.QSIDE_CASTLE),tokens[2].indexOf("k")>-1&&(castling.b|=BITS.KSIDE_CASTLE),tokens[2].indexOf("q")>-1&&(castling.b|=BITS.QSIDE_CASTLE),ep_square="-"===tokens[3]?EMPTY:SQUARES[tokens[3]],half_moves=parseInt(tokens[4],10),move_number=parseInt(tokens[5],10),update_setup(generate_fen()),!0}function _validate_fen(fen){var errors={0:"No errors.",1:"FEN string must contain six space-delimited fields.",2:"6th field (move number) must be a positive integer.",3:"5th field (half move counter) must be a non-negative integer.",4:"4th field (en-passant square) is invalid.",5:"3rd field (castling availability) is invalid.",6:"2nd field (side to move) is invalid.",7:"1st field (piece positions) does not contain 8 '/'-delimited rows.",8:"1st field (piece positions) is invalid [consecutive numbers].",9:"1st field (piece positions) is invalid [invalid piece].",10:"1st field (piece positions) is invalid [row too large].",11:"Illegal en-passant square"},tokens=fen.split(/\s+/);if(6!==tokens.length)return{valid:!1,error_number:1,error:errors[1]};if(isNaN(tokens[5])||parseInt(tokens[5],10)<=0)return{valid:!1,error_number:2,error:errors[2]};if(isNaN(tokens[4])||parseInt(tokens[4],10)<0)return{valid:!1,error_number:3,error:errors[3]};if(!/^(-|[abcdefgh][36])$/.test(tokens[3]))return{valid:!1,error_number:4,error:errors[4]};if(!/^(KQ?k?q?|Qk?q?|kq?|q|-)$/.test(tokens[2]))return{valid:!1,error_number:5,error:errors[5]};if(!/^(w|b)$/.test(tokens[1]))return{valid:!1,error_number:6,error:errors[6]};var rows=tokens[0].split("/");if(8!==rows.length)return{valid:!1,error_number:7,error:errors[7]};for(var i=0;i<rows.length;i++){for(var sum_fields=0,previous_was_number=!1,k=0;k<rows[i].length;k++)if(isNaN(rows[i][k])){if(!/^[prnbqkPRNBQK]$/.test(rows[i][k]))return{valid:!1,error_number:9,error:errors[9]};sum_fields+=1,previous_was_number=!1}else{if(previous_was_number)return{valid:!1,error_number:8,error:errors[8]};sum_fields+=parseInt(rows[i][k],10),previous_was_number=!0}if(8!==sum_fields)return{valid:!1,error_number:10,error:errors[10]}}return"3"==tokens[3][1]&&"w"==tokens[1]||"6"==tokens[3][1]&&"b"==tokens[1]?{valid:!1,error_number:11,error:errors[11]}:{valid:!0,error_number:0,error:errors[0]}}function generate_fen(){for(var empty=0,fen="",i=SQUARES.a8;i<=SQUARES.h1;i++){if(null==board[i])empty++;else{empty>0&&(fen+=empty,empty=0);var color=board[i].color,piece=board[i].type;fen+=color===WHITE?piece.toUpperCase():piece.toLowerCase()}i+1&136&&(empty>0&&(fen+=empty),i!==SQUARES.h1&&(fen+="/"),empty=0,i+=8)}var cflags="";castling[WHITE]&BITS.KSIDE_CASTLE&&(cflags+="K"),castling[WHITE]&BITS.QSIDE_CASTLE&&(cflags+="Q"),castling[BLACK]&BITS.KSIDE_CASTLE&&(cflags+="k"),castling[BLACK]&BITS.QSIDE_CASTLE&&(cflags+="q"),cflags=cflags||"-";var epflags=ep_square===EMPTY?"-":algebraic(ep_square);return[fen,_turn,cflags,epflags,half_moves,move_number].join(" ")}function set_header(args){for(var i=0;i<args.length;i+=2)"string"==typeof args[i]&&"string"==typeof args[i+1]&&(header[args[i]]=args[i+1]);return header}function update_setup(fen){_history.length>0||(fen!==DEFAULT_POSITION?(header.SetUp="1",header.FEN=fen):(delete header.SetUp,delete header.FEN))}function _get(square){var piece=board[SQUARES[square]];return piece?{type:piece.type,color:piece.color}:null}function _put(piece,square){if(!("type"in piece&&"color"in piece))return!1;if(-1===SYMBOLS.indexOf(piece.type.toLowerCase()))return!1;if(!(square in SQUARES))return!1;var sq=SQUARES[square];return(piece.type!=KING||kings[piece.color]==EMPTY||kings[piece.color]==sq)&&(board[sq]={type:piece.type,color:piece.color},piece.type===KING&&(kings[piece.color]=sq),update_setup(generate_fen()),!0)}function _remove(square){var piece=_get(square);return board[SQUARES[square]]=null,piece&&piece.type===KING&&(kings[piece.color]=EMPTY),update_setup(generate_fen()),piece}function build_move(board,from,to,flags,promotion){var move={color:_turn,from:from,to:to,flags:flags,piece:board[from].type};return promotion&&(move.flags|=BITS.PROMOTION,move.promotion=promotion),board[to]?move.captured=board[to].type:flags&BITS.EP_CAPTURE&&(move.captured=PAWN),move}function generate_moves(options){function add_move(board,moves,from,to,flags){if(board[from].type!==PAWN||rank(to)!==RANK_8&&rank(to)!==RANK_1)moves.push(build_move(board,from,to,flags));else for(var pieces=[QUEEN,ROOK,BISHOP,KNIGHT],i=0,len=pieces.length;i<len;i++)moves.push(build_move(board,from,to,flags,pieces[i]))}var moves=[],us=_turn,them=swap_color(us),second_rank={b:RANK_7,w:RANK_2},first_sq=SQUARES.a8,last_sq=SQUARES.h1,single_square=!1,legal=!(void 0!==options&&"legal"in options)||options.legal;if(void 0!==options&&"square"in options){if(!(options.square in SQUARES))return[];first_sq=last_sq=SQUARES[options.square],single_square=!0}for(var i=first_sq;i<=last_sq;i++)if(136&i)i+=7;else{var piece=board[i];if(null!=piece&&piece.color===us)if(piece.type===PAWN){var square=i+PAWN_OFFSETS[us][0];if(null==board[square]){add_move(board,moves,i,square,BITS.NORMAL);var square=i+PAWN_OFFSETS[us][1];second_rank[us]===rank(i)&&null==board[square]&&add_move(board,moves,i,square,BITS.BIG_PAWN)}for(j=2;j<4;j++){var square=i+PAWN_OFFSETS[us][j];136&square||(null!=board[square]&&board[square].color===them?add_move(board,moves,i,square,BITS.CAPTURE):square===ep_square&&add_move(board,moves,i,ep_square,BITS.EP_CAPTURE))}}else for(var j=0,len=PIECE_OFFSETS[piece.type].length;j<len;j++)for(var offset=PIECE_OFFSETS[piece.type][j],square=i;;){if(136&(square+=offset))break;if(null!=board[square]){if(board[square].color===us)break;add_move(board,moves,i,square,BITS.CAPTURE);break}if(add_move(board,moves,i,square,BITS.NORMAL),"n"===piece.type||"k"===piece.type)break}}if(!single_square||last_sq===kings[us]){if(castling[us]&BITS.KSIDE_CASTLE){var castling_from=kings[us],castling_to=castling_from+2;null!=board[castling_from+1]||null!=board[castling_to]||attacked(them,kings[us])||attacked(them,castling_from+1)||attacked(them,castling_to)||add_move(board,moves,kings[us],castling_to,BITS.KSIDE_CASTLE)}if(castling[us]&BITS.QSIDE_CASTLE){var castling_from=kings[us],castling_to=castling_from-2;null!=board[castling_from-1]||null!=board[castling_from-2]||null!=board[castling_from-3]||attacked(them,kings[us])||attacked(them,castling_from-1)||attacked(them,castling_to)||add_move(board,moves,kings[us],castling_to,BITS.QSIDE_CASTLE)}}if(!legal)return moves;for(var legal_moves=[],i=0,len=moves.length;i<len;i++)make_move(moves[i]),king_attacked(us)||legal_moves.push(moves[i]),undo_move();return legal_moves}function move_to_san(move,sloppy){var output="";if(move.flags&BITS.KSIDE_CASTLE)output="O-O";else if(move.flags&BITS.QSIDE_CASTLE)output="O-O-O";else{var disambiguator=get_disambiguator(move,sloppy);move.piece!==PAWN&&(output+=move.piece.toUpperCase()+disambiguator),move.flags&(BITS.CAPTURE|BITS.EP_CAPTURE)&&(move.piece===PAWN&&(output+=algebraic(move.from)[0]),output+="x"),output+=algebraic(move.to),move.flags&BITS.PROMOTION&&(output+="="+move.promotion.toUpperCase())}return make_move(move),_in_check()&&(_in_checkmate()?output+="#":output+="+"),undo_move(),output}function stripped_san(move){return move.replace(/=/,"").replace(/[+#]?[?!]*$/,"")}function attacked(color,square){for(var i=SQUARES.a8;i<=SQUARES.h1;i++)if(136&i)i+=7;else if(null!=board[i]&&board[i].color===color){var piece=board[i],difference=i-square,index=difference+119;if(ATTACKS[index]&1<<SHIFTS[piece.type]){if(piece.type===PAWN){if(difference>0){if(piece.color===WHITE)return!0}else if(piece.color===BLACK)return!0;continue}if("n"===piece.type||"k"===piece.type)return!0;for(var offset=RAYS[index],j=i+offset,blocked=!1;j!==square;){if(null!=board[j]){blocked=!0;break}j+=offset}if(!blocked)return!0}}return!1}function king_attacked(color){return attacked(swap_color(color),kings[color])}function _in_check(){return king_attacked(_turn)}function _in_checkmate(){return _in_check()&&0===generate_moves().length}function _in_stalemate(){return!_in_check()&&0===generate_moves().length}function _insufficient_material(){for(var pieces={},bishops=[],num_pieces=0,sq_color=0,i=SQUARES.a8;i<=SQUARES.h1;i++)if(sq_color=(sq_color+1)%2,136&i)i+=7;else{var piece=board[i];piece&&(pieces[piece.type]=piece.type in pieces?pieces[piece.type]+1:1,piece.type===BISHOP&&bishops.push(sq_color),num_pieces++)}if(2===num_pieces)return!0;if(3===num_pieces&&(1===pieces[BISHOP]||1===pieces[KNIGHT]))return!0;if(num_pieces===pieces[BISHOP]+2){for(var sum=0,len=bishops.length,i=0;i<len;i++)sum+=bishops[i];if(0===sum||sum===len)return!0}return!1}function _in_threefold_repetition(){for(var moves=[],positions={},repetition=!1;;){var move=undo_move();if(!move)break;moves.push(move)}for(;;){var fen=generate_fen().split(" ").slice(0,4).join(" ");if(positions[fen]=fen in positions?positions[fen]+1:1,positions[fen]>=3&&(repetition=!0),!moves.length)break;make_move(moves.pop())}return repetition}function push(move){_history.push({move:move,kings:{b:kings.b,w:kings.w},turn:_turn,castling:{b:castling.b,w:castling.w},ep_square:ep_square,half_moves:half_moves,move_number:move_number})}function make_move(move){var us=_turn,them=swap_color(us);if(push(move),board[move.to]=board[move.from],board[move.from]=null,move.flags&BITS.EP_CAPTURE&&(_turn===BLACK?board[move.to-16]=null:board[move.to+16]=null),move.flags&BITS.PROMOTION&&(board[move.to]={type:move.promotion,color:us}),board[move.to].type===KING){if(kings[board[move.to].color]=move.to,move.flags&BITS.KSIDE_CASTLE){var castling_to=move.to-1,castling_from=move.to+1;board[castling_to]=board[castling_from],board[castling_from]=null}else if(move.flags&BITS.QSIDE_CASTLE){var castling_to=move.to+1,castling_from=move.to-2;board[castling_to]=board[castling_from],board[castling_from]=null}castling[us]=""}if(castling[us])for(var i=0,len=ROOKS[us].length;i<len;i++)if(move.from===ROOKS[us][i].square&&castling[us]&ROOKS[us][i].flag){castling[us]^=ROOKS[us][i].flag;break}if(castling[them])for(var i=0,len=ROOKS[them].length;i<len;i++)if(move.to===ROOKS[them][i].square&&castling[them]&ROOKS[them][i].flag){castling[them]^=ROOKS[them][i].flag;break}ep_square=move.flags&BITS.BIG_PAWN?"b"===_turn?move.to-16:move.to+16:EMPTY,move.piece===PAWN?half_moves=0:move.flags&(BITS.CAPTURE|BITS.EP_CAPTURE)?half_moves=0:half_moves++,_turn===BLACK&&move_number++,_turn=swap_color(_turn)}function undo_move(){var old=_history.pop();if(null==old)return null;var move=old.move;kings=old.kings,_turn=old.turn,castling=old.castling,ep_square=old.ep_square,half_moves=old.half_moves,move_number=old.move_number;var us=_turn,them=swap_color(_turn);if(board[move.from]=board[move.to],board[move.from].type=move.piece,board[move.to]=null,move.flags&BITS.CAPTURE)board[move.to]={type:move.captured,color:them};else if(move.flags&BITS.EP_CAPTURE){var index;index=us===BLACK?move.to-16:move.to+16,board[index]={type:PAWN,color:them}}if(move.flags&(BITS.KSIDE_CASTLE|BITS.QSIDE_CASTLE)){var castling_to,castling_from;move.flags&BITS.KSIDE_CASTLE?(castling_to=move.to+1,castling_from=move.to-1):move.flags&BITS.QSIDE_CASTLE&&(castling_to=move.to-2,castling_from=move.to+1),board[castling_to]=board[castling_from],board[castling_from]=null}return move}function get_disambiguator(move,sloppy){for(var moves=generate_moves({legal:!sloppy}),from=move.from,to=move.to,piece=move.piece,ambiguities=0,same_rank=0,same_file=0,i=0,len=moves.length;i<len;i++){var ambig_from=moves[i].from,ambig_to=moves[i].to;piece===moves[i].piece&&from!==ambig_from&&to===ambig_to&&(ambiguities++,rank(from)===rank(ambig_from)&&same_rank++,file(from)===file(ambig_from)&&same_file++)}return ambiguities>0?same_rank>0&&same_file>0?algebraic(from):same_file>0?algebraic(from).charAt(1):algebraic(from).charAt(0):""}function _ascii(){for(var s=" +------------------------+\n",i=SQUARES.a8;i<=SQUARES.h1;i++){if(0===file(i)&&(s+=" "+"87654321"[rank(i)]+" |"),null==board[i])s+=" . ";else{var piece=board[i].type;s+=" "+(board[i].color===WHITE?piece.toUpperCase():piece.toLowerCase())+" "}i+1&136&&(s+="|\n",i+=8)}return s+=" +------------------------+\n",s+=" a b c d e f g h\n"}function move_from_san(move,sloppy){var clean_move=stripped_san(move);if(sloppy){var matches=clean_move.match(/([pnbrqkPNBRQK])?([a-h][1-8])x?-?([a-h][1-8])([qrbnQRBN])?/);if(matches)var piece=matches[1],from=matches[2],to=matches[3],promotion=matches[4]}for(var moves=generate_moves(),i=0,len=moves.length;i<len;i++){if(clean_move===stripped_san(move_to_san(moves[i]))||sloppy&&clean_move===stripped_san(move_to_san(moves[i],!0)))return moves[i];if(matches&&(!piece||piece.toLowerCase()==moves[i].piece)&&SQUARES[from]==moves[i].from&&SQUARES[to]==moves[i].to&&(!promotion||promotion.toLowerCase()==moves[i].promotion))return moves[i]}return null}function rank(i){return i>>4}function file(i){return 15&i}function algebraic(i){var f=file(i),r=rank(i);return"abcdefgh".substring(f,f+1)+"87654321".substring(r,r+1)}function swap_color(c){return c===WHITE?BLACK:WHITE}function is_digit(c){return-1!=="0123456789".indexOf(c)}function make_pretty(ugly_move){var move=clone(ugly_move);move.san=move_to_san(move,!1),move.to=algebraic(move.to),move.from=algebraic(move.from);var flags="";for(var flag in BITS)BITS[flag]&move.flags&&(flags+=FLAGS[flag]);return move.flags=flags,move}function clone(obj){var dupe=obj instanceof Array?[]:{};for(var property in obj)"object"===(void 0===property?"undefined":_typeof(property))?dupe[property]=clone(obj[property]):dupe[property]=obj[property];return dupe}function trim(str){return str.replace(/^\s+|\s+$/g,"")}function _perft(depth){for(var moves=generate_moves({legal:!1}),nodes=0,color=_turn,i=0,len=moves.length;i<len;i++){if(make_move(moves[i]),!king_attacked(color))if(depth-1>0){var child_nodes=_perft(depth-1);nodes+=child_nodes}else nodes++;undo_move()}return nodes}var BLACK="b",WHITE="w",EMPTY=-1,PAWN="p",KNIGHT="n",BISHOP="b",ROOK="r",QUEEN="q",KING="k",SYMBOLS="pnbrqkPNBRQK",DEFAULT_POSITION="rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1",POSSIBLE_RESULTS=["1-0","0-1","1/2-1/2","*"],PAWN_OFFSETS={b:[16,32,17,15],w:[-16,-32,-17,-15]},PIECE_OFFSETS={n:[-18,-33,-31,-14,18,33,31,14],b:[-17,-15,17,15],r:[-16,1,16,-1],q:[-17,-16,-15,1,17,16,15,-1],k:[-17,-16,-15,1,17,16,15,-1]},ATTACKS=[20,0,0,0,0,0,0,24,0,0,0,0,0,0,20,0,0,20,0,0,0,0,0,24,0,0,0,0,0,20,0,0,0,0,20,0,0,0,0,24,0,0,0,0,20,0,0,0,0,0,0,20,0,0,0,24,0,0,0,20,0,0,0,0,0,0,0,0,20,0,0,24,0,0,20,0,0,0,0,0,0,0,0,0,0,20,2,24,2,20,0,0,0,0,0,0,0,0,0,0,0,2,53,56,53,2,0,0,0,0,0,0,24,24,24,24,24,24,56,0,56,24,24,24,24,24,24,0,0,0,0,0,0,2,53,56,53,2,0,0,0,0,0,0,0,0,0,0,0,20,2,24,2,20,0,0,0,0,0,0,0,0,0,0,20,0,0,24,0,0,20,0,0,0,0,0,0,0,0,20,0,0,0,24,0,0,0,20,0,0,0,0,0,0,20,0,0,0,0,24,0,0,0,0,20,0,0,0,0,20,0,0,0,0,0,24,0,0,0,0,0,20,0,0,20,0,0,0,0,0,0,24,0,0,0,0,0,0,20],RAYS=[17,0,0,0,0,0,0,16,0,0,0,0,0,0,15,0,0,17,0,0,0,0,0,16,0,0,0,0,0,15,0,0,0,0,17,0,0,0,0,16,0,0,0,0,15,0,0,0,0,0,0,17,0,0,0,16,0,0,0,15,0,0,0,0,0,0,0,0,17,0,0,16,0,0,15,0,0,0,0,0,0,0,0,0,0,17,0,16,0,15,0,0,0,0,0,0,0,0,0,0,0,0,17,16,15,0,0,0,0,0,0,0,1,1,1,1,1,1,1,0,-1,-1,-1,-1,-1,-1,-1,0,0,0,0,0,0,0,-15,-16,-17,0,0,0,0,0,0,0,0,0,0,0,0,-15,0,-16,0,-17,0,0,0,0,0,0,0,0,0,0,-15,0,0,-16,0,0,-17,0,0,0,0,0,0,0,0,-15,0,0,0,-16,0,0,0,-17,0,0,0,0,0,0,-15,0,0,0,0,-16,0,0,0,0,-17,0,0,0,0,-15,0,0,0,0,0,-16,0,0,0,0,0,-17,0,0,-15,0,0,0,0,0,0,-16,0,0,0,0,0,0,-17],SHIFTS={p:0,n:1,b:2,r:3,q:4,k:5},FLAGS={NORMAL:"n",CAPTURE:"c",BIG_PAWN:"b",EP_CAPTURE:"e",PROMOTION:"p",KSIDE_CASTLE:"k",QSIDE_CASTLE:"q"},BITS={NORMAL:1,CAPTURE:2,BIG_PAWN:4,EP_CAPTURE:8,PROMOTION:16,KSIDE_CASTLE:32,QSIDE_CASTLE:64},RANK_1=7,RANK_2=6,RANK_7=1,RANK_8=0,SQUARES={a8:0,b8:1,c8:2,d8:3,e8:4,f8:5,g8:6,h8:7,a7:16,b7:17,c7:18,d7:19,e7:20,f7:21,g7:22,h7:23,a6:32,b6:33,c6:34,d6:35,e6:36,f6:37,g6:38,h6:39,a5:48,b5:49,c5:50,d5:51,e5:52,f5:53,g5:54,h5:55,a4:64,b4:65,c4:66,d4:67,e4:68,f4:69,g4:70,h4:71,a3:80,b3:81,c3:82,d3:83,e3:84,f3:85,g3:86,h3:87,a2:96,b2:97,c2:98,d2:99,e2:100,f2:101,g2:102,h2:103,a1:112,b1:113,c1:114,d1:115,e1:116,f1:117,g1:118,h1:119},ROOKS={w:[{square:SQUARES.a1,flag:BITS.QSIDE_CASTLE},{square:SQUARES.h1,flag:BITS.KSIDE_CASTLE}],b:[{square:SQUARES.a8,flag:BITS.QSIDE_CASTLE},{square:SQUARES.h8,flag:BITS.KSIDE_CASTLE}]},board=new Array(128),kings={w:EMPTY,b:EMPTY},_turn=WHITE,castling={w:0,b:0},ep_square=EMPTY,half_moves=0,move_number=1,_history=[],header={};return _load(void 0===fen?DEFAULT_POSITION:fen),{WHITE:WHITE,BLACK:BLACK,PAWN:PAWN,KNIGHT:KNIGHT,BISHOP:BISHOP,ROOK:ROOK,QUEEN:QUEEN,KING:KING,SQUARES:function(){for(var keys=[],i=SQUARES.a8;i<=SQUARES.h1;i++)136&i?i+=7:keys.push(algebraic(i));return keys}(),FLAGS:FLAGS,load:function(fen){return _load(fen)},reset:function(){return _reset()},moves:function(options){for(var ugly_moves=generate_moves(options),moves=[],i=0,len=ugly_moves.length;i<len;i++)void 0!==options&&"verbose"in options&&options.verbose?moves.push(make_pretty(ugly_moves[i])):moves.push(move_to_san(ugly_moves[i],!1));return moves},in_check:function(){return _in_check()},in_checkmate:function(){return _in_checkmate()},in_stalemate:function(){return _in_stalemate()},in_draw:function(){return half_moves>=100||_in_stalemate()||_insufficient_material()||_in_threefold_repetition()},insufficient_material:function(){return _insufficient_material()},in_threefold_repetition:function(){return _in_threefold_repetition()},game_over:function(){return half_moves>=100||_in_checkmate()||_in_stalemate()||_insufficient_material()||_in_threefold_repetition()},validate_fen:function(fen){return _validate_fen(fen)},fen:function(){return generate_fen()},pgn:function(options){var newline="object"===(void 0===options?"undefined":_typeof(options))&&"string"==typeof options.newline_char?options.newline_char:"\n",max_width="object"===(void 0===options?"undefined":_typeof(options))&&"number"==typeof options.max_width?options.max_width:0,result=[],header_exists=!1;for(var i in header)result.push("["+i+' "'+header[i]+'"]'+newline),header_exists=!0;header_exists&&_history.length&&result.push(newline);for(var reversed_history=[];_history.length>0;)reversed_history.push(undo_move());for(var moves=[],move_string="";reversed_history.length>0;){var move=reversed_history.pop();_history.length||"b"!==move.color?"w"===move.color&&(move_string.length&&moves.push(move_string),move_string=move_number+"."):move_string=move_number+". ...",move_string=move_string+" "+move_to_san(move,!1),make_move(move)}if(move_string.length&&moves.push(move_string),void 0!==header.Result&&moves.push(header.Result),0===max_width)return result.join("")+moves.join(" ");for(var current_width=0,i=0;i<moves.length;i++)current_width+moves[i].length>max_width&&0!==i?(" "===result[result.length-1]&&result.pop(),result.push(newline),current_width=0):0!==i&&(result.push(" "),current_width++),result.push(moves[i]),current_width+=moves[i].length;return result.join("")},load_pgn:function(pgn,options){function mask(str){return str.replace(/\\/g,"\\")}var sloppy=void 0!==options&&"sloppy"in options&&options.sloppy,newline_char="object"===(void 0===options?"undefined":_typeof(options))&&"string"==typeof options.newline_char?options.newline_char:"\r?\n",regex=new RegExp("^(\\[(.|"+mask(newline_char)+")*\\])("+mask(newline_char)+")*1.("+mask(newline_char)+"|.)*$","g"),header_string=pgn.replace(regex,"$1");"["!==header_string[0]&&(header_string=""),_reset();var headers=function(header,options){for(var newline_char="object"===(void 0===options?"undefined":_typeof(options))&&"string"==typeof options.newline_char?options.newline_char:"\r?\n",header_obj={},headers=header.split(new RegExp(mask(newline_char))),key="",value="",i=0;i<headers.length;i++)key=headers[i].replace(/^\[([A-Z][A-Za-z]*)\s.*\]$/,"$1"),value=headers[i].replace(/^\[[A-Za-z]+\s"(.*)"\]$/,"$1"),trim(key).length>0&&(header_obj[key]=value);return header_obj}(header_string,options);for(var key in headers)set_header([key,headers[key]]);if("1"===headers.SetUp&&!("FEN"in headers&&_load(headers.FEN)))return!1;var ms=pgn.replace(header_string,"").replace(new RegExp(mask(newline_char),"g")," ");ms=ms.replace(/(\{[^}]+\})+?/g,"");for(var rav_regex=/(\([^\(\)]+\))+?/g;rav_regex.test(ms);)ms=ms.replace(rav_regex,"");ms=ms.replace(/\d+\.(\.\.)?/g,""),ms=ms.replace(/\.\.\./g,""),ms=ms.replace(/\$\d+/g,"");var moves=trim(ms).split(new RegExp(/\s+/));moves=moves.join(",").replace(/,,+/g,",").split(",");for(var move="",half_move=0;half_move<moves.length-1;half_move++){if(null==(move=move_from_san(moves[half_move],sloppy)))return!1;make_move(move)}if(move=moves[moves.length-1],POSSIBLE_RESULTS.indexOf(move)>-1)(function(object){for(var key in object)return!0;return!1})(header)&&void 0===header.Result&&set_header(["Result",move]);else{if(null==(move=move_from_san(move,sloppy)))return!1;make_move(move)}return!0},header:function(){return set_header(arguments)},ascii:function(){return _ascii()},turn:function(){return _turn},move:function(_move,options){var sloppy=void 0!==options&&"sloppy"in options&&options.sloppy,move_obj=null;if("string"==typeof _move)move_obj=move_from_san(_move,sloppy);else if("object"===(void 0===_move?"undefined":_typeof(_move)))for(var moves=generate_moves(),i=0,len=moves.length;i<len;i++)if(!(_move.from!==algebraic(moves[i].from)||_move.to!==algebraic(moves[i].to)||"promotion"in moves[i]&&_move.promotion!==moves[i].promotion)){move_obj=moves[i];break}if(!move_obj)return null;var pretty_move=make_pretty(move_obj);return make_move(move_obj),pretty_move},undo:function(){var move=undo_move();return move?make_pretty(move):null},clear:function(){return _clear()},put:function(piece,square){return _put(piece,square)},get:function(square){return _get(square)},remove:function(square){return _remove(square)},perft:function(depth){return _perft(depth)},square_color:function(square){if(square in SQUARES){var sq_0x88=SQUARES[square];return(rank(sq_0x88)+file(sq_0x88))%2==0?"light":"dark"}return null},history:function(options){for(var reversed_history=[],move_history=[],verbose=(void 0!==options&&"verbose"in options&&options.verbose);_history.length>0;)reversed_history.push(undo_move());for(;reversed_history.length>0;){var move=reversed_history.pop();verbose?move_history.push(make_pretty(move)):move_history.push(move_to_san(move)),make_move(move)}return move_history}}};exports.Chess=Chess,void 0!==(__WEBPACK_AMD_DEFINE_RESULT__=function(){return Chess}.call(exports,__webpack_require__,exports,module))&&(module.exports=__WEBPACK_AMD_DEFINE_RESULT__)},function(module,exports,__webpack_require__){"use strict";function start(state,redrawAll){function toggleOrientation(){board.toggleOrientation(state),redrawAll()}return{set:function(config){config.orientation&&config.orientation!==state.orientation&&toggleOrientation(),(config.fen?anim_1.anim:anim_1.render)(function(state){return config_1.configure(state,config)},state)},state:state,getFen:function(){return fen_1.write(state.pieces)},toggleOrientation:toggleOrientation,setPieces:function(pieces){anim_1.anim(function(state){return board.setPieces(state,pieces)},state)},selectSquare:function(key,force){key?anim_1.anim(function(state){return board.selectSquare(state,key,force)},state):state.selected&&(board.unselect(state),state.dom.redraw())},move:function(orig,dest){anim_1.anim(function(state){return board.baseMove(state,orig,dest)},state)},newPiece:function(piece,key){anim_1.anim(function(state){return board.baseNewPiece(state,piece,key)},state)},playPremove:function(){if(state.premovable.current){if(anim_1.anim(board.playPremove,state))return!0;state.dom.redraw()}return!1},playPredrop:function(validate){if(state.predroppable.current){var result=board.playPredrop(state,validate);return state.dom.redraw(),result}return!1},cancelPremove:function(){anim_1.render(board.unsetPremove,state)},cancelPredrop:function(){anim_1.render(board.unsetPredrop,state)},cancelMove:function(){anim_1.render(function(state){board.cancelMove(state),drag_1.cancel(state)},state)},stop:function(){anim_1.render(function(state){board.stop(state),drag_1.cancel(state)},state)},explode:function(keys){explosion_1.default(state,keys)},setAutoShapes:function(shapes){anim_1.render(function(state){return state.drawable.autoShapes=shapes},state)},setShapes:function(shapes){anim_1.render(function(state){return state.drawable.shapes=shapes},state)},getKeyAtDomPos:function(pos){return board.getKeyAtDomPos(pos,"white"===state.orientation,state.dom.bounds())},redrawAll:redrawAll,dragNewPiece:function(piece,event,force){drag_1.dragNewPiece(state,piece,event,force)},destroy:function(){board.stop(state),state.dom.unbind&&state.dom.unbind(),state.dom.destroyed=!0}}}Object.defineProperty(exports,"__esModule",{value:!0});var board=__webpack_require__(1),fen_1=__webpack_require__(2),config_1=__webpack_require__(5),anim_1=__webpack_require__(4),drag_1=__webpack_require__(6),explosion_1=__webpack_require__(15);exports.start=start},function(module,exports,__webpack_require__){"use strict";function Chessground(element,config){function redrawAll(){var prevUnbind=state.dom&&state.dom.unbind;element.classList.add("cg-board-wrap");var bounds=util.memo(function(){return element.getBoundingClientRect()}),relative=state.viewOnly&&!state.drawable.visible,elements=wrap_1.default(element,state,relative?void 0:bounds()),redrawNow=function(skipSvg){render_1.default(state),!skipSvg&&elements.svg&&svg.renderSvg(state,elements.svg)};state.dom={elements:elements,bounds:bounds,redraw:debounceRedraw(redrawNow),redrawNow:redrawNow,unbind:prevUnbind,relative:relative},state.drawable.prevSvgHash="",redrawNow(!1),events.bindBoard(state),prevUnbind||(state.dom.unbind=events.bindDocument(state,redrawAll))}var state=state_1.defaults();return config_1.configure(state,config||{}),redrawAll(),api_1.start(state,redrawAll)}function debounceRedraw(redrawNow){var redrawing=!1;return function(){redrawing||(redrawing=!0,util.raf(function(){redrawNow(),redrawing=!1}))}}Object.defineProperty(exports,"__esModule",{value:!0});var api_1=__webpack_require__(12),config_1=__webpack_require__(5),state_1=__webpack_require__(18),wrap_1=__webpack_require__(19),events=__webpack_require__(14),render_1=__webpack_require__(17),svg=__webpack_require__(8),util=__webpack_require__(0);exports.Chessground=Chessground},function(module,exports,__webpack_require__){"use strict";function bindBoard(s){if(!s.viewOnly){var boardEl=s.dom.elements.board,onStart=startDragOrDraw(s);boardEl.addEventListener("touchstart",onStart),boardEl.addEventListener("mousedown",onStart),(s.disableContextMenu||s.drawable.enabled)&&boardEl.addEventListener("contextmenu",function(e){return e.preventDefault()})}}function bindDocument(s,redrawAll){var unbinds=[];if(!s.dom.relative&&s.resizable){var onResize=function(){s.dom.bounds.clear(),util_1.raf(redrawAll)};unbinds.push(unbindable(document.body,"chessground.resize",onResize))}if(!s.viewOnly){var onmove_1=dragOrDraw(s,drag.move,draw.move),onend_1=dragOrDraw(s,drag.end,draw.end);["touchmove","mousemove"].forEach(function(ev){return unbinds.push(unbindable(document,ev,onmove_1))}),["touchend","mouseup"].forEach(function(ev){return unbinds.push(unbindable(document,ev,onend_1))});var onScroll=function(){return s.dom.bounds.clear()};unbinds.push(unbindable(window,"scroll",onScroll,{passive:!0})),unbinds.push(unbindable(window,"resize",onScroll,{passive:!0}))}return function(){return unbinds.forEach(function(f){return f()})}}function unbindable(el,eventName,callback,options){return el.addEventListener(eventName,callback,options),function(){return el.removeEventListener(eventName,callback)}}function startDragOrDraw(s){return function(e){s.draggable.current?drag.cancel(s):s.drawable.current?draw.cancel(s):e.shiftKey||util_1.isRightButton(e)?s.drawable.enabled&&draw.start(s,e):s.viewOnly||drag.start(s,e)}}function dragOrDraw(s,withDrag,withDraw){return function(e){e.shiftKey||util_1.isRightButton(e)?s.drawable.enabled&&withDraw(s,e):s.viewOnly||withDrag(s,e)}}Object.defineProperty(exports,"__esModule",{value:!0});var drag=__webpack_require__(6),draw=__webpack_require__(7),util_1=__webpack_require__(0);exports.bindBoard=bindBoard,exports.bindDocument=bindDocument},function(module,exports,__webpack_require__){"use strict";function explosion(state,keys){state.exploding={stage:1,keys:keys},state.dom.redraw(),setTimeout(function(){setStage(state,2),setTimeout(function(){return setStage(state,void 0)},120)},120)}function setStage(state,stage){state.exploding&&(stage?state.exploding.stage=stage:state.exploding=void 0,state.dom.redraw())}Object.defineProperty(exports,"__esModule",{value:!0}),exports.default=explosion},function(module,exports,__webpack_require__){"use strict";function diff(a,b){return Math.abs(a-b)}function pawn(color){return function(x1,y1,x2,y2){return diff(x1,x2)<2&&("white"===color?y2===y1+1||y1<=2&&y2===y1+2&&x1===x2:y2===y1-1||y1>=7&&y2===y1-2&&x1===x2)}}function king(color,rookFiles,canCastle){return function(x1,y1,x2,y2){return diff(x1,x2)<2&&diff(y1,y2)<2||canCastle&&y1===y2&&y1===("white"===color?1:8)&&(5===x1&&(3===x2||7===x2)||util.containsX(rookFiles,x2))}}function rookFilesOf(pieces,color){var piece;return Object.keys(pieces).filter(function(key){return(piece=pieces[key])&&piece.color===color&&"rook"===piece.role}).map(function(key){return util.key2pos(key)[0]})}function premove(pieces,key,canCastle){var mobility,piece=pieces[key],pos=util.key2pos(key);switch(piece.role){case"pawn":mobility=pawn(piece.color);break;case"knight":mobility=knight;break;case"bishop":mobility=bishop;break;case"rook":mobility=rook;break;case"queen":mobility=queen;break;case"king":mobility=king(piece.color,rookFilesOf(pieces,piece.color),canCastle)}return util.allKeys.map(util.key2pos).filter(function(pos2){return(pos[0]!==pos2[0]||pos[1]!==pos2[1])&&mobility(pos[0],pos[1],pos2[0],pos2[1])}).map(util.pos2key)}Object.defineProperty(exports,"__esModule",{value:!0});var util=__webpack_require__(0),knight=function(x1,y1,x2,y2){var xd=diff(x1,x2),yd=diff(y1,y2);return 1===xd&&2===yd||2===xd&&1===yd},bishop=function(x1,y1,x2,y2){return diff(x1,x2)===diff(y1,y2)},rook=function(x1,y1,x2,y2){return x1===x2||y1===y2},queen=function(x1,y1,x2,y2){return bishop(x1,y1,x2,y2)||rook(x1,y1,x2,y2)};exports.default=premove},function(module,exports,__webpack_require__){"use strict";function render(s){var k,p,el,pieceAtKey,elPieceName,anim,fading,pMvdset,pMvd,sMvdset,sMvd,asWhite="white"===s.orientation,posToTranslate=s.dom.relative?util.posToTranslateRel:util.posToTranslateAbs(s.dom.bounds()),translate=s.dom.relative?util.translateRel:util.translateAbs,boardEl=s.dom.elements.board,pieces=s.pieces,curAnim=s.animation.current,anims=curAnim?curAnim.plan.anims:{},fadings=curAnim?curAnim.plan.fadings:{},curDrag=s.draggable.current,squares=computeSquareClasses(s),samePieces={},sameSquares={},movedPieces={},movedSquares={},piecesKeys=Object.keys(pieces);for(el=boardEl.firstChild;el;){if(k=el.cgKey,isPieceNode(el))if(pieceAtKey=pieces[k],anim=anims[k],fading=fadings[k],elPieceName=el.cgPiece,!el.cgDragging||curDrag&&curDrag.orig===k||(el.classList.remove("dragging"),translate(el,posToTranslate(util_1.key2pos(k),asWhite)),el.cgDragging=!1),!fading&&el.cgFading&&(el.cgFading=!1,el.classList.remove("fading")),pieceAtKey){if(anim&&el.cgAnimating&&elPieceName===pieceNameOf(pieceAtKey)){var pos=util_1.key2pos(k);pos[0]+=anim[2],pos[1]+=anim[3],el.classList.add("anim"),translate(el,posToTranslate(pos,asWhite))}else el.cgAnimating&&(el.cgAnimating=!1,el.classList.remove("anim"),translate(el,posToTranslate(util_1.key2pos(k),asWhite)),s.addPieceZIndex&&(el.style.zIndex=posZIndex(util_1.key2pos(k),asWhite)));elPieceName!==pieceNameOf(pieceAtKey)||fading&&el.cgFading?fading&&elPieceName===pieceNameOf(fading)?(el.classList.add("fading"),el.cgFading=!0):movedPieces[elPieceName]?movedPieces[elPieceName].push(el):movedPieces[elPieceName]=[el]:samePieces[k]=!0}else movedPieces[elPieceName]?movedPieces[elPieceName].push(el):movedPieces[elPieceName]=[el];else if(isSquareNode(el)){var cn=el.className;squares[k]===cn?sameSquares[k]=!0:movedSquares[cn]?movedSquares[cn].push(el):movedSquares[cn]=[el]}el=el.nextSibling}for(var sk in squares)if(!sameSquares[sk]){sMvdset=movedSquares[squares[sk]],sMvd=sMvdset&&sMvdset.pop();var translation=posToTranslate(util_1.key2pos(sk),asWhite);if(sMvd)sMvd.cgKey=sk,translate(sMvd,translation);else{var squareNode=util_1.createEl("square",squares[sk]);squareNode.cgKey=sk,translate(squareNode,translation),boardEl.insertBefore(squareNode,boardEl.firstChild)}}for(var j in piecesKeys)if(k=piecesKeys[j],p=pieces[k],anim=anims[k],!samePieces[k])if(pMvdset=movedPieces[pieceNameOf(p)],pMvd=pMvdset&&pMvdset.pop()){pMvd.cgKey=k,pMvd.cgFading&&(pMvd.classList.remove("fading"),pMvd.cgFading=!1);var pos=util_1.key2pos(k);s.addPieceZIndex&&(pMvd.style.zIndex=posZIndex(pos,asWhite)),anim&&(pMvd.cgAnimating=!0,pMvd.classList.add("anim"),pos[0]+=anim[2],pos[1]+=anim[3]),translate(pMvd,posToTranslate(pos,asWhite))}else{var pieceName=pieceNameOf(p),pieceNode=util_1.createEl("piece",pieceName),pos=util_1.key2pos(k);pieceNode.cgPiece=pieceName,pieceNode.cgKey=k,anim&&(pieceNode.cgAnimating=!0,pos[0]+=anim[2],pos[1]+=anim[3]),translate(pieceNode,posToTranslate(pos,asWhite)),s.addPieceZIndex&&(pieceNode.style.zIndex=posZIndex(pos,asWhite)),boardEl.appendChild(pieceNode)}for(var i in movedPieces)removeNodes(s,movedPieces[i]);for(var i in movedSquares)removeNodes(s,movedSquares[i])}function isPieceNode(el){return"PIECE"===el.tagName}function isSquareNode(el){return"SQUARE"===el.tagName}function removeNodes(s,nodes){for(var i in nodes)s.dom.elements.board.removeChild(nodes[i])}function posZIndex(pos,asWhite){var z=2+8*(pos[1]-1)+(8-pos[0]);return asWhite&&(z=67-z),z+""}function pieceNameOf(piece){return piece.color+" "+piece.role}function computeSquareClasses(s){var i,k,squares={};if(s.lastMove&&s.highlight.lastMove)for(i in s.lastMove)addSquare(squares,s.lastMove[i],"last-move");if(s.check&&s.highlight.check&&addSquare(squares,s.check,"check"),s.selected&&(addSquare(squares,s.selected,"selected"),s.movable.showDests)){var dests=s.movable.dests&&s.movable.dests[s.selected];if(dests)for(i in dests)k=dests[i],addSquare(squares,k,"move-dest"+(s.pieces[k]?" oc":""));var pDests=s.premovable.dests;if(pDests)for(i in pDests)k=pDests[i],addSquare(squares,k,"premove-dest"+(s.pieces[k]?" oc":""))}var premove=s.premovable.current;if(premove)for(i in premove)addSquare(squares,premove[i],"current-premove");else s.predroppable.current&&addSquare(squares,s.predroppable.current.key,"current-premove");var o=s.exploding;if(o)for(i in o.keys)addSquare(squares,o.keys[i],"exploding"+o.stage);return squares}function addSquare(squares,key,klass){squares[key]?squares[key]+=" "+klass:squares[key]=klass}Object.defineProperty(exports,"__esModule",{value:!0});var util_1=__webpack_require__(0),util=__webpack_require__(0);exports.default=render},function(module,exports,__webpack_require__){"use strict";function defaults(){return{pieces:fen.read(fen.initial),orientation:"white",turnColor:"white",coordinates:!0,autoCastle:!0,viewOnly:!1,disableContextMenu:!1,resizable:!0,addPieceZIndex:!1,pieceKey:!1,highlight:{lastMove:!0,check:!0},animation:{enabled:!0,duration:200},movable:{free:!0,color:"both",showDests:!0,events:{},rookCastle:!0},premovable:{enabled:!0,showDests:!0,castle:!0,events:{}},predroppable:{enabled:!1,events:{}},draggable:{enabled:!0,distance:3,autoDistance:!0,centerPiece:!0,showGhost:!0,deleteOnDropOff:!1},selectable:{enabled:!0},stats:{dragged:!("ontouchstart"in window)},events:{},drawable:{enabled:!0,visible:!0,eraseOnClick:!0,shapes:[],autoShapes:[],brushes:{green:{key:"g",color:"#15781B",opacity:1,lineWidth:10},red:{key:"r",color:"#882020",opacity:1,lineWidth:10},blue:{key:"b",color:"#003088",opacity:1,lineWidth:10},yellow:{key:"y",color:"#e68f00",opacity:1,lineWidth:10},paleBlue:{key:"pb",color:"#003088",opacity:.4,lineWidth:15},paleGreen:{key:"pg",color:"#15781B",opacity:.4,lineWidth:15},paleRed:{key:"pr",color:"#882020",opacity:.4,lineWidth:15},paleGrey:{key:"pgr",color:"#4a4a4a",opacity:.35,lineWidth:15}},pieces:{baseUrl:"https://lichess1.org/assets/piece/cburnett/"},prevSvgHash:""},hold:util_1.timer()}}Object.defineProperty(exports,"__esModule",{value:!0});var fen=__webpack_require__(2),util_1=__webpack_require__(0);exports.defaults=defaults},function(module,exports,__webpack_require__){"use strict";function wrap(element,s,bounds){element.innerHTML="",element.classList.add("cg-board-wrap"),util_1.colors.forEach(function(c){element.classList.toggle("orientation-"+c,s.orientation===c)}),element.classList.toggle("manipulable",!s.viewOnly);var board=util_1.createEl("div","cg-board");element.appendChild(board);var svg;if(s.drawable.visible&&bounds&&(svg=svg_1.createElement("svg"),svg.appendChild(svg_1.createElement("defs")),element.appendChild(svg)),s.coordinates){var orientClass="black"===s.orientation?" black":"";element.appendChild(renderCoords(types_1.ranks,"ranks"+orientClass)),element.appendChild(renderCoords(types_1.files,"files"+orientClass))}var ghost;return bounds&&s.draggable.showGhost&&(ghost=util_1.createEl("piece","ghost"),util_1.setVisible(ghost,!1),element.appendChild(ghost)),{board:board,ghost:ghost,svg:svg}}function renderCoords(elems,className){var f,el=util_1.createEl("coords",className);for(var i in elems)f=util_1.createEl("coord"),f.textContent=elems[i],el.appendChild(f);return el}Object.defineProperty(exports,"__esModule",{value:!0});var util_1=__webpack_require__(0),types_1=__webpack_require__(3),svg_1=__webpack_require__(8);exports.default=wrap},function(module,__webpack_exports__,__webpack_require__){"use strict";function uniques(arr){return arr.filter(function(elem,index,self){return index===self.indexOf(elem)})}__webpack_exports__.a=uniques},function(module,__webpack_exports__,__webpack_require__){"use strict";Object.defineProperty(__webpack_exports__,"__esModule",{value:!0}),function(global){function install(Vue){Vue.component("chessboard",__WEBPACK_IMPORTED_MODULE_0__components_chessboard_index_vue___default.a)}__webpack_exports__.install=install;var __WEBPACK_IMPORTED_MODULE_0__components_chessboard_index_vue__=__webpack_require__(10),__WEBPACK_IMPORTED_MODULE_0__components_chessboard_index_vue___default=__webpack_require__.n(__WEBPACK_IMPORTED_MODULE_0__components_chessboard_index_vue__);__webpack_require__.d(__webpack_exports__,"chessboard",function(){return __WEBPACK_IMPORTED_MODULE_0__components_chessboard_index_vue___default.a});var plugin={version:"0.6.5",install:install};__webpack_exports__.default=plugin;var GlobalVue=null;"undefined"!=typeof window?GlobalVue=window.Vue:void 0!==global&&(GlobalVue=global.Vue),GlobalVue&&GlobalVue.use(plugin)}.call(__webpack_exports__,__webpack_require__(9))},function(module,__webpack_exports__,__webpack_require__){"use strict";Object.defineProperty(__webpack_exports__,"__esModule",{value:!0});var __WEBPACK_IMPORTED_MODULE_0_chess_js__=__webpack_require__(11),__WEBPACK_IMPORTED_MODULE_0_chess_js___default=__webpack_require__.n(__WEBPACK_IMPORTED_MODULE_0_chess_js__),__WEBPACK_IMPORTED_MODULE_1_chessground__=__webpack_require__(13),__WEBPACK_IMPORTED_MODULE_2__Util_js__=(__webpack_require__.n(__WEBPACK_IMPORTED_MODULE_1_chessground__),__webpack_require__(20));__webpack_exports__.default={name:"chessboard",props:{fen:{type:String,default:""},free:{type:Boolean,default:!1},showThreats:{type:Boolean,default:!1},onPromotion:{type:Function,default:function(){return"q"}},orientation:{type:String,default:"white"}},watch:{fen:function(newFen){this.fen=newFen,this.loadPosition()},orientation:function(_orientation){console.log("watch orientation________",_orientation),this.orientation=_orientation,this.loadPosition()},showThreats:function(st){this.showThreats=st,this.showThreats&&this.paintThreats()}},methods:{possibleMoves:function(){var _this=this,dests={};return this.game.SQUARES.forEach(function(s){var ms=_this.game.moves({square:s,verbose:!0});ms.length&&(dests[s]=ms.map(function(m){return m.to}))}),dests},opponentMoves:function(){var originalPGN=this.game.pgn(),tokens=this.game.fen().split(" ");if(tokens[1]="w"===tokens[1]?"b":"w",tokens=tokens.join(" "),this.game.load(tokens)){var moves=this.game.moves({verbose:!0});return this.game.load_pgn(originalPGN),moves}return[]},toColor:function(){return"w"===this.game.turn()?"white":"black"},paintThreats:function(){var moves=this.game.moves({verbose:!0}),threats=[];moves.forEach(function(move){threats.push({orig:move.to,brush:"yellow"}),move.captured&&threats.push({orig:move.from,dest:move.to,brush:"red"}),move.san.includes("+")&&threats.push({orig:move.from,dest:move.to,brush:"blue"})}),this.board.setShapes(threats)},calculatePromotions:function(){var moves=this.game.moves({verbose:!0});this.promotions=[];var _iteratorNormalCompletion=!0,_didIteratorError=!1,_iteratorError=void 0;try{for(var _step,_iterator=moves[Symbol.iterator]();!(_iteratorNormalCompletion=(_step=_iterator.next()).done);_iteratorNormalCompletion=!0){var move=_step.value;move.promotion&&this.promotions.push(move)}}catch(err){_didIteratorError=!0,_iteratorError=err}finally{try{!_iteratorNormalCompletion&&_iterator.return&&_iterator.return()}finally{if(_didIteratorError)throw _iteratorError}}},isPromotion:function(orig,dest){return this.promotions.filter(function(move){return move.from===orig&&move.to===dest}).length>0},changeTurn:function(){var _this2=this;return function(orig,dest,metadata){_this2.isPromotion(orig,dest)&&(_this2.promoteTo=_this2.onPromotion()),_this2.game.move({from:orig,to:dest,promotion:_this2.promoteTo}),_this2.board.set({fen:_this2.game.fen(),turnColor:_this2.toColor(),movable:{color:_this2.toColor(),dests:_this2.possibleMoves()}}),_this2.calculatePromotions(),_this2.afterMove()}},afterMove:function(){this.showThreats&&this.paintThreats();var threats=this.countThreats(this.toColor());threats.history=this.game.history(),threats.fen=this.game.fen(),this.$emit("onMove",threats)},countThreats:function(color){var threats={},captures=0,checks=0,moves=this.game.moves({verbose:!0});return color!==this.toColor()&&(moves=this.opponentMoves()),0===moves.length?null:(moves.forEach(function(move){move.captured&&captures++,move.san.includes("+")&&checks++}),threats["legal_"+color]=__webpack_require__.i(__WEBPACK_IMPORTED_MODULE_2__Util_js__.a)(moves.map(function(x){return x.from+x.to})).length,threats["checks_"+color]=checks,threats["threat_"+color]=captures,threats.turn=color,threats)},loadPosition:function(){this.game.load(this.fen),this.board=__webpack_require__.i(__WEBPACK_IMPORTED_MODULE_1_chessground__.Chessground)(this.$refs.board,{fen:this.game.fen(),turnColor:this.toColor(),movable:{color:this.toColor(),free:this.free,dests:this.possibleMoves()},orientation:this.orientation}),this.board.set({movable:{events:{after:this.changeTurn()}}}),this.afterMove()}},mounted:function(){this.loadPosition()},created:function(){this.game=new __WEBPACK_IMPORTED_MODULE_0_chess_js___default.a,this.board=null,this.promotions=[],this.promoteTo="q"}}},function(module,exports){module.exports=function(rawScriptExports,compiledTemplate,scopeId,cssModules){var esModule,scriptExports=rawScriptExports=rawScriptExports||{},type=typeof rawScriptExports.default;"object"!==type&&"function"!==type||(esModule=rawScriptExports,scriptExports=rawScriptExports.default);var options="function"==typeof scriptExports?scriptExports.options:scriptExports;if(compiledTemplate&&(options.render=compiledTemplate.render,options.staticRenderFns=compiledTemplate.staticRenderFns),scopeId&&(options._scopeId=scopeId),cssModules){var computed=options.computed||(options.computed={});Object.keys(cssModules).forEach(function(key){var module=cssModules[key];computed[key]=function(){return module}})}return{esModule:esModule,exports:scriptExports,options:options}}},function(module,exports){module.exports={render:function(){var _vm=this,_h=_vm.$createElement,_c=_vm._self._c||_h;return _c("div",{staticClass:"blue merida"},[_c("div",{ref:"board",staticClass:"cg-board-wrap"}),_vm._v(" "),_c("br")])},staticRenderFns:[]}}])}); + +/***/ }), + +/***/ "./node_modules/vue-chessboard/dist/vue-chessboard.common.js": +/*!*******************************************************************!*\ + !*** ./node_modules/vue-chessboard/dist/vue-chessboard.common.js ***! + \*******************************************************************/ +/*! no static exports found */ +/***/ (function(module, exports, __webpack_require__) { + +/* WEBPACK VAR INJECTION */(function(global) {module.exports=function(modules){function __webpack_require__(moduleId){if(installedModules[moduleId])return installedModules[moduleId].exports;var module=installedModules[moduleId]={i:moduleId,l:!1,exports:{}};return modules[moduleId].call(module.exports,module,module.exports,__webpack_require__),module.l=!0,module.exports}var installedModules={};return __webpack_require__.m=modules,__webpack_require__.c=installedModules,__webpack_require__.i=function(value){return value},__webpack_require__.d=function(exports,name,getter){__webpack_require__.o(exports,name)||Object.defineProperty(exports,name,{configurable:!1,enumerable:!0,get:getter})},__webpack_require__.n=function(module){var getter=module&&module.__esModule?function(){return module.default}:function(){return module};return __webpack_require__.d(getter,"a",getter),getter},__webpack_require__.o=function(object,property){return Object.prototype.hasOwnProperty.call(object,property)},__webpack_require__.p="",__webpack_require__(__webpack_require__.s=20)}([function(module,exports,__webpack_require__){"use strict";function memo(f){var v,ret=function(){return void 0===v&&(v=f()),v};return ret.clear=function(){v=void 0},ret}function containsX(xs,x){return void 0!==xs&&-1!==xs.indexOf(x)}Object.defineProperty(exports,"__esModule",{value:!0});var cg=__webpack_require__(3);exports.colors=["white","black"],exports.invRanks=[8,7,6,5,4,3,2,1],exports.allKeys=(_a=Array.prototype).concat.apply(_a,cg.files.map(function(c){return cg.ranks.map(function(r){return c+r})})),exports.pos2key=function(pos){return exports.allKeys[8*pos[0]+pos[1]-9]},exports.key2pos=function(k){return[k.charCodeAt(0)-96,k.charCodeAt(1)-48]},exports.memo=memo,exports.timer=function(){var startAt;return{start:function(){startAt=Date.now()},cancel:function(){startAt=void 0},stop:function(){if(!startAt)return 0;var time=Date.now()-startAt;return startAt=void 0,time}}},exports.opposite=function(c){return"white"===c?"black":"white"},exports.containsX=containsX,exports.distanceSq=function(pos1,pos2){return Math.pow(pos1[0]-pos2[0],2)+Math.pow(pos1[1]-pos2[1],2)},exports.samePiece=function(p1,p2){return p1.role===p2.role&&p1.color===p2.color},exports.computeIsTrident=function(){return window.navigator.userAgent.indexOf("Trident/")>-1};var posToTranslateBase=function(pos,asWhite,xFactor,yFactor){return[(asWhite?pos[0]-1:8-pos[0])*xFactor,(asWhite?8-pos[1]:pos[1]-1)*yFactor]};exports.posToTranslateAbs=function(bounds){var xFactor=bounds.width/8,yFactor=bounds.height/8;return function(pos,asWhite){return posToTranslateBase(pos,asWhite,xFactor,yFactor)}},exports.posToTranslateRel=function(pos,asWhite){return posToTranslateBase(pos,asWhite,12.5,12.5)},exports.translateAbs=function(el,pos){el.style.transform="translate("+pos[0]+"px,"+pos[1]+"px)"},exports.translateRel=function(el,percents){el.style.left=percents[0]+"%",el.style.top=percents[1]+"%"},exports.setVisible=function(el,v){el.style.visibility=v?"visible":"hidden"},exports.eventPosition=function(e){return e.clientX||0===e.clientX?[e.clientX,e.clientY]:e.touches&&e.targetTouches[0]?[e.targetTouches[0].clientX,e.targetTouches[0].clientY]:void 0},exports.isRightButton=function(e){return 2===e.buttons||2===e.button},exports.createEl=function(tagName,className){var el=document.createElement(tagName);return className&&(el.className=className),el},exports.raf=(window.requestAnimationFrame||window.setTimeout).bind(window);var _a},function(module,exports,__webpack_require__){"use strict";function callUserFunction(f){for(var args=[],_i=1;_i<arguments.length;_i++)args[_i-1]=arguments[_i];f&&setTimeout(function(){return f.apply(void 0,args)},1)}function toggleOrientation(state){state.orientation=util_1.opposite(state.orientation),state.animation.current=state.draggable.current=state.selected=void 0}function reset(state){state.lastMove=void 0,unselect(state),unsetPremove(state),unsetPredrop(state)}function setPieces(state,pieces){for(var key in pieces){var piece=pieces[key];piece?state.pieces[key]=piece:delete state.pieces[key]}}function setCheck(state,color){if(!0===color&&(color=state.turnColor),color)for(var k in state.pieces)"king"===state.pieces[k].role&&state.pieces[k].color===color&&(state.check=k);else state.check=void 0}function setPremove(state,orig,dest,meta){unsetPredrop(state),state.premovable.current=[orig,dest],callUserFunction(state.premovable.events.set,orig,dest,meta)}function unsetPremove(state){state.premovable.current&&(state.premovable.current=void 0,callUserFunction(state.premovable.events.unset))}function setPredrop(state,role,key){unsetPremove(state),state.predroppable.current={role:role,key:key},callUserFunction(state.predroppable.events.set,role,key)}function unsetPredrop(state){var pd=state.predroppable;pd.current&&(pd.current=void 0,callUserFunction(pd.events.unset))}function tryAutoCastle(state,orig,dest){if(!state.autoCastle)return!1;var king=state.pieces[orig];if("king"!==king.role)return!1;var origPos=util_1.key2pos(orig);if(5!==origPos[0])return!1;if(1!==origPos[1]&&8!==origPos[1])return!1;var oldRookPos,newRookPos,newKingPos,destPos=util_1.key2pos(dest);if(7===destPos[0]||8===destPos[0])oldRookPos=util_1.pos2key([8,origPos[1]]),newRookPos=util_1.pos2key([6,origPos[1]]),newKingPos=util_1.pos2key([7,origPos[1]]);else{if(3!==destPos[0]&&1!==destPos[0])return!1;oldRookPos=util_1.pos2key([1,origPos[1]]),newRookPos=util_1.pos2key([4,origPos[1]]),newKingPos=util_1.pos2key([3,origPos[1]])}var rook=state.pieces[oldRookPos];return"rook"===rook.role&&(delete state.pieces[orig],delete state.pieces[oldRookPos],state.pieces[newKingPos]=king,state.pieces[newRookPos]=rook,!0)}function baseMove(state,orig,dest){if(orig===dest||!state.pieces[orig])return!1;var captured=state.pieces[dest]&&state.pieces[dest].color!==state.pieces[orig].color?state.pieces[dest]:void 0;return dest==state.selected&&unselect(state),callUserFunction(state.events.move,orig,dest,captured),tryAutoCastle(state,orig,dest)||(state.pieces[dest]=state.pieces[orig],delete state.pieces[orig]),state.lastMove=[orig,dest],state.check=void 0,callUserFunction(state.events.change),captured||!0}function baseNewPiece(state,piece,key,force){if(state.pieces[key]){if(!force)return!1;delete state.pieces[key]}return callUserFunction(state.events.dropNewPiece,piece,key),state.pieces[key]=piece,state.lastMove=[key],state.check=void 0,callUserFunction(state.events.change),state.movable.dests=void 0,state.turnColor=util_1.opposite(state.turnColor),!0}function baseUserMove(state,orig,dest){var result=baseMove(state,orig,dest);return result&&(state.movable.dests=void 0,state.turnColor=util_1.opposite(state.turnColor),state.animation.current=void 0),result}function userMove(state,orig,dest){if(canMove(state,orig,dest)){var result=baseUserMove(state,orig,dest);if(result){var holdTime=state.hold.stop();unselect(state);var metadata={premove:!1,ctrlKey:state.stats.ctrlKey,holdTime:holdTime};return!0!==result&&(metadata.captured=result),callUserFunction(state.movable.events.after,orig,dest,metadata),!0}}else canPremove(state,orig,dest)?(setPremove(state,orig,dest,{ctrlKey:state.stats.ctrlKey}),unselect(state)):isMovable(state,dest)||isPremovable(state,dest)?(setSelected(state,dest),state.hold.start()):unselect(state);return!1}function dropNewPiece(state,orig,dest,force){if(canDrop(state,orig,dest)||force){var piece=state.pieces[orig];delete state.pieces[orig],baseNewPiece(state,piece,dest,force),callUserFunction(state.movable.events.afterNewPiece,piece.role,dest,{predrop:!1})}else canPredrop(state,orig,dest)?setPredrop(state,state.pieces[orig].role,dest):(unsetPremove(state),unsetPredrop(state));delete state.pieces[orig],unselect(state)}function selectSquare(state,key,force){state.selected?state.selected!==key||state.draggable.enabled?(state.selectable.enabled||force)&&state.selected!==key?userMove(state,state.selected,key)&&(state.stats.dragged=!1):state.hold.start():(unselect(state),state.hold.cancel()):(isMovable(state,key)||isPremovable(state,key))&&(setSelected(state,key),state.hold.start()),callUserFunction(state.events.select,key)}function setSelected(state,key){state.selected=key,isPremovable(state,key)?state.premovable.dests=premove_1.default(state.pieces,key,state.premovable.castle):state.premovable.dests=void 0}function unselect(state){state.selected=void 0,state.premovable.dests=void 0,state.hold.cancel()}function isMovable(state,orig){var piece=state.pieces[orig];return piece&&("both"===state.movable.color||state.movable.color===piece.color&&state.turnColor===piece.color)}function canMove(state,orig,dest){return orig!==dest&&isMovable(state,orig)&&(state.movable.free||!!state.movable.dests&&util_1.containsX(state.movable.dests[orig],dest))}function canDrop(state,orig,dest){var piece=state.pieces[orig];return piece&&dest&&(orig===dest||!state.pieces[dest])&&("both"===state.movable.color||state.movable.color===piece.color&&state.turnColor===piece.color)}function isPremovable(state,orig){var piece=state.pieces[orig];return piece&&state.premovable.enabled&&state.movable.color===piece.color&&state.turnColor!==piece.color}function canPremove(state,orig,dest){return orig!==dest&&isPremovable(state,orig)&&util_1.containsX(premove_1.default(state.pieces,orig,state.premovable.castle),dest)}function canPredrop(state,orig,dest){var piece=state.pieces[orig];return piece&&dest&&(!state.pieces[dest]||state.pieces[dest].color!==state.movable.color)&&state.predroppable.enabled&&("pawn"!==piece.role||"1"!==dest[1]&&"8"!==dest[1])&&state.movable.color===piece.color&&state.turnColor!==piece.color}function isDraggable(state,orig){var piece=state.pieces[orig];return piece&&state.draggable.enabled&&("both"===state.movable.color||state.movable.color===piece.color&&(state.turnColor===piece.color||state.premovable.enabled))}function playPremove(state){var move=state.premovable.current;if(!move)return!1;var orig=move[0],dest=move[1],success=!1;if(canMove(state,orig,dest)){var result=baseUserMove(state,orig,dest);if(result){var metadata={premove:!0};!0!==result&&(metadata.captured=result),callUserFunction(state.movable.events.after,orig,dest,metadata),success=!0}}return unsetPremove(state),success}function playPredrop(state,validate){var drop=state.predroppable.current,success=!1;if(!drop)return!1;if(validate(drop)){baseNewPiece(state,{role:drop.role,color:state.movable.color},drop.key)&&(callUserFunction(state.movable.events.afterNewPiece,drop.role,drop.key,{predrop:!0}),success=!0)}return unsetPredrop(state),success}function cancelMove(state){unsetPremove(state),unsetPredrop(state),unselect(state)}function stop(state){state.movable.color=state.movable.dests=state.animation.current=void 0,cancelMove(state)}function getKeyAtDomPos(pos,asWhite,bounds){var file=Math.ceil((pos[0]-bounds.left)/bounds.width*8);asWhite||(file=9-file);var rank=Math.ceil(8-(pos[1]-bounds.top)/bounds.height*8);return asWhite||(rank=9-rank),file>0&&file<9&&rank>0&&rank<9?util_1.pos2key([file,rank]):void 0}Object.defineProperty(exports,"__esModule",{value:!0});var util_1=__webpack_require__(0),premove_1=__webpack_require__(15);exports.callUserFunction=callUserFunction,exports.toggleOrientation=toggleOrientation,exports.reset=reset,exports.setPieces=setPieces,exports.setCheck=setCheck,exports.unsetPremove=unsetPremove,exports.unsetPredrop=unsetPredrop,exports.baseMove=baseMove,exports.baseNewPiece=baseNewPiece,exports.userMove=userMove,exports.dropNewPiece=dropNewPiece,exports.selectSquare=selectSquare,exports.setSelected=setSelected,exports.unselect=unselect,exports.canMove=canMove,exports.isDraggable=isDraggable,exports.playPremove=playPremove,exports.playPredrop=playPredrop,exports.cancelMove=cancelMove,exports.stop=stop,exports.getKeyAtDomPos=getKeyAtDomPos},function(module,exports,__webpack_require__){"use strict";function read(fen){"start"===fen&&(fen=exports.initial);for(var pieces={},row=8,col=0,_i=0,fen_1=fen;_i<fen_1.length;_i++){var c=fen_1[_i];switch(c){case" ":return pieces;case"/":if(0===--row)return pieces;col=0;break;case"~":pieces[util_1.pos2key([col,row])].promoted=!0;break;default:var nb=c.charCodeAt(0);if(nb<57)col+=nb-48;else{++col;var role=c.toLowerCase();pieces[util_1.pos2key([col,row])]={role:roles[role],color:c===role?"black":"white"}}}}return pieces}function write(pieces){var piece,letter;return util_1.invRanks.map(function(y){return cg.ranks.map(function(x){return piece=pieces[util_1.pos2key([x,y])],piece?(letter=letters[piece.role],"white"===piece.color?letter.toUpperCase():letter):"1"}).join("")}).join("/").replace(/1{2,}/g,function(s){return s.length.toString()})}Object.defineProperty(exports,"__esModule",{value:!0});var util_1=__webpack_require__(0),cg=__webpack_require__(3);exports.initial="rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR";var roles={p:"pawn",r:"rook",n:"knight",b:"bishop",q:"queen",k:"king"},letters={pawn:"p",rook:"r",knight:"n",bishop:"b",queen:"q",king:"k"};exports.read=read,exports.write=write},function(module,exports,__webpack_require__){"use strict";Object.defineProperty(exports,"__esModule",{value:!0}),exports.files=["a","b","c","d","e","f","g","h"],exports.ranks=[1,2,3,4,5,6,7,8]},function(module,exports,__webpack_require__){"use strict";function anim(mutation,state){return state.animation.enabled?animate(mutation,state):render(mutation,state)}function render(mutation,state){var result=mutation(state);return state.dom.redraw(),result}function makePiece(key,piece){return{key:key,pos:util.key2pos(key),piece:piece}}function closer(piece,pieces){return pieces.sort(function(p1,p2){return util.distanceSq(piece.pos,p1.pos)-util.distanceSq(piece.pos,p2.pos)})[0]}function computePlan(prevPieces,current){var curP,preP,i,vector,anims={},animedOrigs=[],fadings={},missings=[],news=[],prePieces={};for(i in prevPieces)prePieces[i]=makePiece(i,prevPieces[i]);for(var _i=0,_a=util.allKeys;_i<_a.length;_i++){var key=_a[_i];curP=current.pieces[key],preP=prePieces[key],curP?preP?util.samePiece(curP,preP.piece)||(missings.push(preP),news.push(makePiece(key,curP))):news.push(makePiece(key,curP)):preP&&missings.push(preP)}return news.forEach(function(newP){(preP=closer(newP,missings.filter(function(p){return util.samePiece(newP.piece,p.piece)})))&&(vector=[preP.pos[0]-newP.pos[0],preP.pos[1]-newP.pos[1]],anims[newP.key]=vector.concat(vector),animedOrigs.push(preP.key))}),missings.forEach(function(p){util.containsX(animedOrigs,p.key)||current.items&¤t.items(p.pos,p.key)||(fadings[p.key]=p.piece)}),{anims:anims,fadings:fadings}}function step(state,now){var cur=state.animation.current;if(void 0===cur)return void(state.dom.destroyed||state.dom.redrawNow());var rest=1-(now-cur.start)*cur.frequency;if(rest<=0)state.animation.current=void 0,state.dom.redrawNow();else{var ease=easing(rest);for(var i in cur.plan.anims){var cfg=cur.plan.anims[i];cfg[2]=cfg[0]*ease,cfg[3]=cfg[1]*ease}state.dom.redrawNow(!0),util.raf(function(now){return void 0===now&&(now=perf.now()),step(state,now)})}}function animate(mutation,state){var prevPieces=__assign({},state.pieces),result=mutation(state),plan=computePlan(prevPieces,state);if(isObjectEmpty(plan.anims)&&isObjectEmpty(plan.fadings))state.dom.redraw();else{var alreadyRunning=state.animation.current&&state.animation.current.start;state.animation.current={start:perf.now(),frequency:1/state.animation.duration,plan:plan},alreadyRunning||step(state,perf.now())}return result}function isObjectEmpty(o){for(var _ in o)return!1;return!0}function easing(t){return t<.5?4*t*t*t:(t-1)*(2*t-2)*(2*t-2)+1}var __assign=this&&this.__assign||Object.assign||function(t){for(var s,i=1,n=arguments.length;i<n;i++){s=arguments[i];for(var p in s)Object.prototype.hasOwnProperty.call(s,p)&&(t[p]=s[p])}return t};Object.defineProperty(exports,"__esModule",{value:!0});var util=__webpack_require__(0);exports.anim=anim,exports.render=render;var perf=void 0!==window.performance?window.performance:Date},function(module,exports,__webpack_require__){"use strict";function configure(state,config){if(config.movable&&config.movable.dests&&(state.movable.dests=void 0),merge(state,config),config.fen&&(state.pieces=fen_1.read(config.fen),state.drawable.shapes=[]),config.hasOwnProperty("check")&&board_1.setCheck(state,config.check||!1),config.hasOwnProperty("lastMove")&&!config.lastMove?state.lastMove=void 0:config.lastMove&&(state.lastMove=config.lastMove),state.selected&&board_1.setSelected(state,state.selected),(!state.animation.duration||state.animation.duration<100)&&(state.animation.enabled=!1),!state.movable.rookCastle&&state.movable.dests){var rank_1="white"===state.movable.color?1:8,kingStartPos="e"+rank_1,dests_1=state.movable.dests[kingStartPos];if(!dests_1||"king"!==state.pieces[kingStartPos].role)return;state.movable.dests[kingStartPos]=dests_1.filter(function(d){return!(d==="a"+rank_1&&-1!==dests_1.indexOf("c"+rank_1)||d==="h"+rank_1&&-1!==dests_1.indexOf("g"+rank_1))})}}function merge(base,extend){for(var key in extend)isObject(base[key])&&isObject(extend[key])?merge(base[key],extend[key]):base[key]=extend[key]}function isObject(o){return"object"===(void 0===o?"undefined":_typeof(o))}var _typeof="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(obj){return typeof obj}:function(obj){return obj&&"function"==typeof Symbol&&obj.constructor===Symbol&&obj!==Symbol.prototype?"symbol":typeof obj};Object.defineProperty(exports,"__esModule",{value:!0});var board_1=__webpack_require__(1),fen_1=__webpack_require__(2);exports.configure=configure},function(module,exports,__webpack_require__){"use strict";function start(s,e){if(!(void 0!==e.button&&0!==e.button||e.touches&&e.touches.length>1)){e.preventDefault();var asWhite="white"===s.orientation,bounds=s.dom.bounds(),position=util.eventPosition(e),orig=board.getKeyAtDomPos(position,asWhite,bounds);if(orig){var piece=s.pieces[orig],previouslySelected=s.selected;previouslySelected||!s.drawable.enabled||!s.drawable.eraseOnClick&&piece&&piece.color===s.turnColor||draw_1.clear(s);var hadPremove=!!s.premovable.current,hadPredrop=!!s.predroppable.current;s.stats.ctrlKey=e.ctrlKey,s.selected&&board.canMove(s,s.selected,orig)?anim_1.anim(function(state){return board.selectSquare(state,orig)},s):board.selectSquare(s,orig);var stillSelected=s.selected===orig,element=pieceElementByKey(s,orig);if(piece&&element&&stillSelected&&board.isDraggable(s,orig)){var squareBounds=computeSquareBounds(orig,asWhite,bounds);s.draggable.current={orig:orig,origPos:util.key2pos(orig),piece:piece,rel:position,epos:position,pos:[0,0],dec:s.draggable.centerPiece?[position[0]-(squareBounds.left+squareBounds.width/2),position[1]-(squareBounds.top+squareBounds.height/2)]:[0,0],started:s.draggable.autoDistance&&s.stats.dragged,element:element,previouslySelected:previouslySelected,originTarget:e.target},element.cgDragging=!0,element.classList.add("dragging");var ghost=s.dom.elements.ghost;ghost&&(ghost.className="ghost "+piece.color+" "+piece.role,util.translateAbs(ghost,util.posToTranslateAbs(bounds)(util.key2pos(orig),asWhite)),util.setVisible(ghost,!0)),processDrag(s)}else hadPremove&&board.unsetPremove(s),hadPredrop&&board.unsetPredrop(s);s.dom.redraw()}}}function dragNewPiece(s,piece,e,force){s.pieces.a0=piece,s.dom.redraw();var position=util.eventPosition(e),asWhite="white"===s.orientation,bounds=s.dom.bounds(),squareBounds=computeSquareBounds("a0",asWhite,bounds),rel=[(asWhite?0:7)*squareBounds.width+bounds.left,(asWhite?8:-1)*squareBounds.height+bounds.top];s.draggable.current={orig:"a0",origPos:util.key2pos("a0"),piece:piece,rel:rel,epos:position,pos:[position[0]-rel[0],position[1]-rel[1]],dec:[-squareBounds.width/2,-squareBounds.height/2],started:!0,element:function(){return pieceElementByKey(s,"a0")},originTarget:e.target,newPiece:!0,force:force||!1},processDrag(s)}function processDrag(s){util.raf(function(){var cur=s.draggable.current;if(cur){s.animation.current&&s.animation.current.plan.anims[cur.orig]&&(s.animation.current=void 0);var origPiece=s.pieces[cur.orig];if(origPiece&&util.samePiece(origPiece,cur.piece)){if(!cur.started&&util.distanceSq(cur.epos,cur.rel)>=Math.pow(s.draggable.distance,2)&&(cur.started=!0),cur.started){if("function"==typeof cur.element){var found=cur.element();if(!found)return;cur.element=found,cur.element.cgDragging=!0,cur.element.classList.add("dragging")}var asWhite="white"===s.orientation,bounds=s.dom.bounds();cur.pos=[cur.epos[0]-cur.rel[0],cur.epos[1]-cur.rel[1]];var translation=util.posToTranslateAbs(bounds)(cur.origPos,asWhite);translation[0]+=cur.pos[0]+cur.dec[0],translation[1]+=cur.pos[1]+cur.dec[1],util.translateAbs(cur.element,translation)}}else cancel(s);processDrag(s)}})}function move(s,e){s.draggable.current&&(!e.touches||e.touches.length<2)&&(s.draggable.current.epos=util.eventPosition(e))}function end(s,e){var cur=s.draggable.current;if(cur){if("touchend"===e.type&&cur&&cur.originTarget!==e.target&&!cur.newPiece)return void(s.draggable.current=void 0);board.unsetPremove(s),board.unsetPredrop(s);var eventPos=util.eventPosition(e)||cur.epos,dest=board.getKeyAtDomPos(eventPos,"white"===s.orientation,s.dom.bounds());dest&&cur.started?cur.newPiece?board.dropNewPiece(s,cur.orig,dest,cur.force):(s.stats.ctrlKey=e.ctrlKey,board.userMove(s,cur.orig,dest)&&(s.stats.dragged=!0)):cur.newPiece?delete s.pieces[cur.orig]:s.draggable.deleteOnDropOff&&(delete s.pieces[cur.orig],board.callUserFunction(s.events.change)),!cur||cur.orig!==cur.previouslySelected||cur.orig!==dest&&dest?s.selectable.enabled||board.unselect(s):board.unselect(s),removeDragElements(s),s.draggable.current=void 0,s.dom.redraw()}}function cancel(s){var cur=s.draggable.current;cur&&(cur.newPiece&&delete s.pieces[cur.orig],s.draggable.current=void 0,board.unselect(s),removeDragElements(s),s.dom.redraw())}function removeDragElements(s){var e=s.dom.elements;e.ghost&&util.setVisible(e.ghost,!1)}function computeSquareBounds(key,asWhite,bounds){var pos=util.key2pos(key);return asWhite||(pos[0]=9-pos[0],pos[1]=9-pos[1]),{left:bounds.left+bounds.width*(pos[0]-1)/8,top:bounds.top+bounds.height*(8-pos[1])/8,width:bounds.width/8,height:bounds.height/8}}function pieceElementByKey(s,key){for(var el=s.dom.elements.board.firstChild;el;){if(el.cgKey===key&&"PIECE"===el.tagName)return el;el=el.nextSibling}}Object.defineProperty(exports,"__esModule",{value:!0});var board=__webpack_require__(1),util=__webpack_require__(0),draw_1=__webpack_require__(7),anim_1=__webpack_require__(4);exports.start=start,exports.dragNewPiece=dragNewPiece,exports.move=move,exports.end=end,exports.cancel=cancel},function(module,exports,__webpack_require__){"use strict";function start(state,e){if(!(e.touches&&e.touches.length>1)){e.stopPropagation(),e.preventDefault(),e.ctrlKey?board_1.unselect(state):board_1.cancelMove(state);var position=util_1.eventPosition(e),orig=board_1.getKeyAtDomPos(position,"white"===state.orientation,state.dom.bounds());orig&&(state.drawable.current={orig:orig,pos:position,brush:eventBrush(e)},processDraw(state))}}function processDraw(state){util_1.raf(function(){var cur=state.drawable.current;if(cur){var mouseSq=board_1.getKeyAtDomPos(cur.pos,"white"===state.orientation,state.dom.bounds());mouseSq!==cur.mouseSq&&(cur.mouseSq=mouseSq,cur.dest=mouseSq!==cur.orig?mouseSq:void 0,state.dom.redrawNow()),processDraw(state)}})}function move(state,e){state.drawable.current&&(state.drawable.current.pos=util_1.eventPosition(e))}function end(state){var cur=state.drawable.current;cur&&(cur.mouseSq&&addShape(state.drawable,cur),cancel(state))}function cancel(state){state.drawable.current&&(state.drawable.current=void 0,state.dom.redraw())}function clear(state){state.drawable.shapes.length&&(state.drawable.shapes=[],state.dom.redraw(),onChange(state.drawable))}function eventBrush(e){var a=e.shiftKey&&util_1.isRightButton(e)?1:0,b=e.altKey?2:0;return brushes[a+b]}function not(f){return function(x){return!f(x)}}function addShape(drawable,cur){var sameShape=function(s){return s.orig===cur.orig&&s.dest===cur.dest},similar=drawable.shapes.filter(sameShape)[0];similar&&(drawable.shapes=drawable.shapes.filter(not(sameShape))),similar&&similar.brush===cur.brush||drawable.shapes.push(cur),onChange(drawable)}function onChange(drawable){drawable.onChange&&drawable.onChange(drawable.shapes)}Object.defineProperty(exports,"__esModule",{value:!0});var board_1=__webpack_require__(1),util_1=__webpack_require__(0),brushes=["green","red","blue","yellow"];exports.start=start,exports.processDraw=processDraw,exports.move=move,exports.end=end,exports.cancel=cancel,exports.clear=clear},function(module,exports,__webpack_require__){"use strict";function createElement(tagName){return document.createElementNS("http://www.w3.org/2000/svg",tagName)}function renderSvg(state,root){var d=state.drawable,curD=d.current,cur=curD&&curD.mouseSq?curD:void 0,arrowDests={};d.shapes.concat(d.autoShapes).concat(cur?[cur]:[]).forEach(function(s){s.dest&&(arrowDests[s.dest]=(arrowDests[s.dest]||0)+1)});var shapes=d.shapes.concat(d.autoShapes).map(function(s){return{shape:s,current:!1,hash:shapeHash(s,arrowDests,!1)}});cur&&shapes.push({shape:cur,current:!0,hash:shapeHash(cur,arrowDests,!0)});var fullHash=shapes.map(function(sc){return sc.hash}).join("");if(fullHash!==state.drawable.prevSvgHash){state.drawable.prevSvgHash=fullHash;var defsEl=root.firstChild;syncDefs(d,shapes,defsEl),syncShapes(state,shapes,d.brushes,arrowDests,root,defsEl)}}function syncDefs(d,shapes,defsEl){var brush,brushes={};shapes.forEach(function(s){s.shape.dest&&(brush=d.brushes[s.shape.brush],s.shape.modifiers&&(brush=makeCustomBrush(brush,s.shape.modifiers)),brushes[brush.key]=brush)});for(var keysInDom={},el=defsEl.firstChild;el;)keysInDom[el.getAttribute("cgKey")]=!0,el=el.nextSibling;for(var key in brushes)keysInDom[key]||defsEl.appendChild(renderMarker(brushes[key]))}function syncShapes(state,shapes,brushes,arrowDests,root,defsEl){void 0===isTrident&&(isTrident=util_1.computeIsTrident());var bounds=state.dom.bounds(),hashesInDom={},toRemove=[];shapes.forEach(function(sc){hashesInDom[sc.hash]=!1});for(var elHash,el=defsEl.nextSibling;el;)elHash=el.getAttribute("cgHash"),hashesInDom.hasOwnProperty(elHash)?hashesInDom[elHash]=!0:toRemove.push(el),el=el.nextSibling;toRemove.forEach(function(el){return root.removeChild(el)}),shapes.forEach(function(sc){hashesInDom[sc.hash]||root.appendChild(renderShape(state,sc,brushes,arrowDests,bounds))})}function shapeHash(_a,arrowDests,current){var orig=_a.orig,dest=_a.dest,brush=_a.brush,piece=_a.piece,modifiers=_a.modifiers;return[current,orig,dest,brush,dest&&arrowDests[dest]>1,piece&&pieceHash(piece),modifiers&&modifiersHash(modifiers)].filter(function(x){return x}).join("")}function pieceHash(piece){return[piece.color,piece.role,piece.scale].filter(function(x){return x}).join("")}function modifiersHash(m){return""+(m.lineWidth||"")}function renderShape(state,_a,brushes,arrowDests,bounds){var el,shape=_a.shape,current=_a.current,hash=_a.hash;if(shape.piece)el=renderPiece(state.drawable.pieces.baseUrl,orient(util_1.key2pos(shape.orig),state.orientation),shape.piece,bounds);else{var orig=orient(util_1.key2pos(shape.orig),state.orientation);if(shape.orig&&shape.dest){var brush=brushes[shape.brush];shape.modifiers&&(brush=makeCustomBrush(brush,shape.modifiers)),el=renderArrow(brush,orig,orient(util_1.key2pos(shape.dest),state.orientation),current,arrowDests[shape.dest]>1,bounds)}else el=renderCircle(brushes[shape.brush],orig,current,bounds)}return el.setAttribute("cgHash",hash),el}function renderCircle(brush,pos,current,bounds){var o=pos2px(pos,bounds),widths=circleWidth(bounds),radius=(bounds.width+bounds.height)/32;return setAttributes(createElement("circle"),{stroke:brush.color,"stroke-width":widths[current?0:1],fill:"none",opacity:opacity(brush,current),cx:o[0],cy:o[1],r:radius-widths[1]/2})}function renderArrow(brush,orig,dest,current,shorten,bounds){var m=arrowMargin(bounds,shorten&&!current),a=pos2px(orig,bounds),b=pos2px(dest,bounds),dx=b[0]-a[0],dy=b[1]-a[1],angle=Math.atan2(dy,dx),xo=Math.cos(angle)*m,yo=Math.sin(angle)*m;return setAttributes(createElement("line"),{stroke:brush.color,"stroke-width":lineWidth(brush,current,bounds),"stroke-linecap":"round","marker-end":isTrident?void 0:"url(#arrowhead-"+brush.key+")",opacity:opacity(brush,current),x1:a[0],y1:a[1],x2:b[0]-xo,y2:b[1]-yo})}function renderPiece(baseUrl,pos,piece,bounds){var o=pos2px(pos,bounds),size=bounds.width/8*(piece.scale||1),name=piece.color[0]+("knight"===piece.role?"n":piece.role[0]).toUpperCase();return setAttributes(createElement("image"),{className:piece.role+" "+piece.color,x:o[0]-size/2,y:o[1]-size/2,width:size,height:size,href:baseUrl+name+".svg"})}function renderMarker(brush){var marker=setAttributes(createElement("marker"),{id:"arrowhead-"+brush.key,orient:"auto",markerWidth:4,markerHeight:8,refX:2.05,refY:2.01});return marker.appendChild(setAttributes(createElement("path"),{d:"M0,0 V4 L3,2 Z",fill:brush.color})),marker.setAttribute("cgKey",brush.key),marker}function setAttributes(el,attrs){for(var key in attrs)el.setAttribute(key,attrs[key]);return el}function orient(pos,color){return"white"===color?pos:[9-pos[0],9-pos[1]]}function makeCustomBrush(base,modifiers){var brush={color:base.color,opacity:Math.round(10*base.opacity)/10,lineWidth:Math.round(modifiers.lineWidth||base.lineWidth)};return brush.key=[base.key,modifiers.lineWidth].filter(function(x){return x}).join(""),brush}function circleWidth(bounds){var base=bounds.width/512;return[3*base,4*base]}function lineWidth(brush,current,bounds){return(brush.lineWidth||10)*(current?.85:1)/512*bounds.width}function opacity(brush,current){return(brush.opacity||1)*(current?.9:1)}function arrowMargin(bounds,shorten){return isTrident?0:(shorten?20:10)/512*bounds.width}function pos2px(pos,bounds){return[(pos[0]-.5)*bounds.width/8,(8.5-pos[1])*bounds.height/8]}Object.defineProperty(exports,"__esModule",{value:!0});var util_1=__webpack_require__(0);exports.createElement=createElement;var isTrident;exports.renderSvg=renderSvg},function(module,exports,__webpack_require__){var Component=__webpack_require__(22)(__webpack_require__(21),__webpack_require__(23),null,null);module.exports=Component.exports},function(module,exports,__webpack_require__){var __WEBPACK_AMD_DEFINE_RESULT__,_typeof="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(obj){return typeof obj}:function(obj){return obj&&"function"==typeof Symbol&&obj.constructor===Symbol&&obj!==Symbol.prototype?"symbol":typeof obj},Chess=function(fen){function _clear(){board=new Array(128),kings={w:EMPTY,b:EMPTY},_turn=WHITE,castling={w:0,b:0},ep_square=EMPTY,half_moves=0,move_number=1,_history=[],header={},update_setup(generate_fen())}function _reset(){_load(DEFAULT_POSITION)}function _load(fen){var tokens=fen.split(/\s+/),position=tokens[0],square=0;if(!_validate_fen(fen).valid)return!1;_clear();for(var i=0;i<position.length;i++){var piece=position.charAt(i);if("/"===piece)square+=8;else if(is_digit(piece))square+=parseInt(piece,10);else{var color=piece<"a"?WHITE:BLACK;_put({type:piece.toLowerCase(),color:color},algebraic(square)),square++}}return _turn=tokens[1],tokens[2].indexOf("K")>-1&&(castling.w|=BITS.KSIDE_CASTLE),tokens[2].indexOf("Q")>-1&&(castling.w|=BITS.QSIDE_CASTLE),tokens[2].indexOf("k")>-1&&(castling.b|=BITS.KSIDE_CASTLE),tokens[2].indexOf("q")>-1&&(castling.b|=BITS.QSIDE_CASTLE),ep_square="-"===tokens[3]?EMPTY:SQUARES[tokens[3]],half_moves=parseInt(tokens[4],10),move_number=parseInt(tokens[5],10),update_setup(generate_fen()),!0}function _validate_fen(fen){var errors={0:"No errors.",1:"FEN string must contain six space-delimited fields.",2:"6th field (move number) must be a positive integer.",3:"5th field (half move counter) must be a non-negative integer.",4:"4th field (en-passant square) is invalid.",5:"3rd field (castling availability) is invalid.",6:"2nd field (side to move) is invalid.",7:"1st field (piece positions) does not contain 8 '/'-delimited rows.",8:"1st field (piece positions) is invalid [consecutive numbers].",9:"1st field (piece positions) is invalid [invalid piece].",10:"1st field (piece positions) is invalid [row too large].",11:"Illegal en-passant square"},tokens=fen.split(/\s+/);if(6!==tokens.length)return{valid:!1,error_number:1,error:errors[1]};if(isNaN(tokens[5])||parseInt(tokens[5],10)<=0)return{valid:!1,error_number:2,error:errors[2]};if(isNaN(tokens[4])||parseInt(tokens[4],10)<0)return{valid:!1,error_number:3,error:errors[3]};if(!/^(-|[abcdefgh][36])$/.test(tokens[3]))return{valid:!1,error_number:4,error:errors[4]};if(!/^(KQ?k?q?|Qk?q?|kq?|q|-)$/.test(tokens[2]))return{valid:!1,error_number:5,error:errors[5]};if(!/^(w|b)$/.test(tokens[1]))return{valid:!1,error_number:6,error:errors[6]};var rows=tokens[0].split("/");if(8!==rows.length)return{valid:!1,error_number:7,error:errors[7]};for(var i=0;i<rows.length;i++){for(var sum_fields=0,previous_was_number=!1,k=0;k<rows[i].length;k++)if(isNaN(rows[i][k])){if(!/^[prnbqkPRNBQK]$/.test(rows[i][k]))return{valid:!1,error_number:9,error:errors[9]};sum_fields+=1,previous_was_number=!1}else{if(previous_was_number)return{valid:!1,error_number:8,error:errors[8]};sum_fields+=parseInt(rows[i][k],10),previous_was_number=!0}if(8!==sum_fields)return{valid:!1,error_number:10,error:errors[10]}}return"3"==tokens[3][1]&&"w"==tokens[1]||"6"==tokens[3][1]&&"b"==tokens[1]?{valid:!1,error_number:11,error:errors[11]}:{valid:!0,error_number:0,error:errors[0]}}function generate_fen(){for(var empty=0,fen="",i=SQUARES.a8;i<=SQUARES.h1;i++){if(null==board[i])empty++;else{empty>0&&(fen+=empty,empty=0);var color=board[i].color,piece=board[i].type;fen+=color===WHITE?piece.toUpperCase():piece.toLowerCase()}i+1&136&&(empty>0&&(fen+=empty),i!==SQUARES.h1&&(fen+="/"),empty=0,i+=8)}var cflags="";castling[WHITE]&BITS.KSIDE_CASTLE&&(cflags+="K"),castling[WHITE]&BITS.QSIDE_CASTLE&&(cflags+="Q"),castling[BLACK]&BITS.KSIDE_CASTLE&&(cflags+="k"),castling[BLACK]&BITS.QSIDE_CASTLE&&(cflags+="q"),cflags=cflags||"-";var epflags=ep_square===EMPTY?"-":algebraic(ep_square);return[fen,_turn,cflags,epflags,half_moves,move_number].join(" ")}function set_header(args){for(var i=0;i<args.length;i+=2)"string"==typeof args[i]&&"string"==typeof args[i+1]&&(header[args[i]]=args[i+1]);return header}function update_setup(fen){_history.length>0||(fen!==DEFAULT_POSITION?(header.SetUp="1",header.FEN=fen):(delete header.SetUp,delete header.FEN))}function _get(square){var piece=board[SQUARES[square]];return piece?{type:piece.type,color:piece.color}:null}function _put(piece,square){if(!("type"in piece&&"color"in piece))return!1;if(-1===SYMBOLS.indexOf(piece.type.toLowerCase()))return!1;if(!(square in SQUARES))return!1;var sq=SQUARES[square];return(piece.type!=KING||kings[piece.color]==EMPTY||kings[piece.color]==sq)&&(board[sq]={type:piece.type,color:piece.color},piece.type===KING&&(kings[piece.color]=sq),update_setup(generate_fen()),!0)}function _remove(square){var piece=_get(square);return board[SQUARES[square]]=null,piece&&piece.type===KING&&(kings[piece.color]=EMPTY),update_setup(generate_fen()),piece}function build_move(board,from,to,flags,promotion){var move={color:_turn,from:from,to:to,flags:flags,piece:board[from].type};return promotion&&(move.flags|=BITS.PROMOTION,move.promotion=promotion),board[to]?move.captured=board[to].type:flags&BITS.EP_CAPTURE&&(move.captured=PAWN),move}function generate_moves(options){function add_move(board,moves,from,to,flags){if(board[from].type!==PAWN||rank(to)!==RANK_8&&rank(to)!==RANK_1)moves.push(build_move(board,from,to,flags));else for(var pieces=[QUEEN,ROOK,BISHOP,KNIGHT],i=0,len=pieces.length;i<len;i++)moves.push(build_move(board,from,to,flags,pieces[i]))}var moves=[],us=_turn,them=swap_color(us),second_rank={b:RANK_7,w:RANK_2},first_sq=SQUARES.a8,last_sq=SQUARES.h1,single_square=!1,legal=!(void 0!==options&&"legal"in options)||options.legal;if(void 0!==options&&"square"in options){if(!(options.square in SQUARES))return[];first_sq=last_sq=SQUARES[options.square],single_square=!0}for(var i=first_sq;i<=last_sq;i++)if(136&i)i+=7;else{var piece=board[i];if(null!=piece&&piece.color===us)if(piece.type===PAWN){var square=i+PAWN_OFFSETS[us][0];if(null==board[square]){add_move(board,moves,i,square,BITS.NORMAL);var square=i+PAWN_OFFSETS[us][1];second_rank[us]===rank(i)&&null==board[square]&&add_move(board,moves,i,square,BITS.BIG_PAWN)}for(j=2;j<4;j++){var square=i+PAWN_OFFSETS[us][j];136&square||(null!=board[square]&&board[square].color===them?add_move(board,moves,i,square,BITS.CAPTURE):square===ep_square&&add_move(board,moves,i,ep_square,BITS.EP_CAPTURE))}}else for(var j=0,len=PIECE_OFFSETS[piece.type].length;j<len;j++)for(var offset=PIECE_OFFSETS[piece.type][j],square=i;;){if(136&(square+=offset))break;if(null!=board[square]){if(board[square].color===us)break;add_move(board,moves,i,square,BITS.CAPTURE);break}if(add_move(board,moves,i,square,BITS.NORMAL),"n"===piece.type||"k"===piece.type)break}}if(!single_square||last_sq===kings[us]){if(castling[us]&BITS.KSIDE_CASTLE){var castling_from=kings[us],castling_to=castling_from+2;null!=board[castling_from+1]||null!=board[castling_to]||attacked(them,kings[us])||attacked(them,castling_from+1)||attacked(them,castling_to)||add_move(board,moves,kings[us],castling_to,BITS.KSIDE_CASTLE)}if(castling[us]&BITS.QSIDE_CASTLE){var castling_from=kings[us],castling_to=castling_from-2;null!=board[castling_from-1]||null!=board[castling_from-2]||null!=board[castling_from-3]||attacked(them,kings[us])||attacked(them,castling_from-1)||attacked(them,castling_to)||add_move(board,moves,kings[us],castling_to,BITS.QSIDE_CASTLE)}}if(!legal)return moves;for(var legal_moves=[],i=0,len=moves.length;i<len;i++)make_move(moves[i]),king_attacked(us)||legal_moves.push(moves[i]),undo_move();return legal_moves}function move_to_san(move,sloppy){var output="";if(move.flags&BITS.KSIDE_CASTLE)output="O-O";else if(move.flags&BITS.QSIDE_CASTLE)output="O-O-O";else{var disambiguator=get_disambiguator(move,sloppy);move.piece!==PAWN&&(output+=move.piece.toUpperCase()+disambiguator),move.flags&(BITS.CAPTURE|BITS.EP_CAPTURE)&&(move.piece===PAWN&&(output+=algebraic(move.from)[0]),output+="x"),output+=algebraic(move.to),move.flags&BITS.PROMOTION&&(output+="="+move.promotion.toUpperCase())}return make_move(move),_in_check()&&(_in_checkmate()?output+="#":output+="+"),undo_move(),output}function stripped_san(move){return move.replace(/=/,"").replace(/[+#]?[?!]*$/,"")}function attacked(color,square){for(var i=SQUARES.a8;i<=SQUARES.h1;i++)if(136&i)i+=7;else if(null!=board[i]&&board[i].color===color){var piece=board[i],difference=i-square,index=difference+119;if(ATTACKS[index]&1<<SHIFTS[piece.type]){if(piece.type===PAWN){if(difference>0){if(piece.color===WHITE)return!0}else if(piece.color===BLACK)return!0;continue}if("n"===piece.type||"k"===piece.type)return!0;for(var offset=RAYS[index],j=i+offset,blocked=!1;j!==square;){if(null!=board[j]){blocked=!0;break}j+=offset}if(!blocked)return!0}}return!1}function king_attacked(color){return attacked(swap_color(color),kings[color])}function _in_check(){return king_attacked(_turn)}function _in_checkmate(){return _in_check()&&0===generate_moves().length}function _in_stalemate(){return!_in_check()&&0===generate_moves().length}function _insufficient_material(){for(var pieces={},bishops=[],num_pieces=0,sq_color=0,i=SQUARES.a8;i<=SQUARES.h1;i++)if(sq_color=(sq_color+1)%2,136&i)i+=7;else{var piece=board[i];piece&&(pieces[piece.type]=piece.type in pieces?pieces[piece.type]+1:1,piece.type===BISHOP&&bishops.push(sq_color),num_pieces++)}if(2===num_pieces)return!0;if(3===num_pieces&&(1===pieces[BISHOP]||1===pieces[KNIGHT]))return!0;if(num_pieces===pieces[BISHOP]+2){for(var sum=0,len=bishops.length,i=0;i<len;i++)sum+=bishops[i];if(0===sum||sum===len)return!0}return!1}function _in_threefold_repetition(){for(var moves=[],positions={},repetition=!1;;){var move=undo_move();if(!move)break;moves.push(move)}for(;;){var fen=generate_fen().split(" ").slice(0,4).join(" ");if(positions[fen]=fen in positions?positions[fen]+1:1,positions[fen]>=3&&(repetition=!0),!moves.length)break;make_move(moves.pop())}return repetition}function push(move){_history.push({move:move,kings:{b:kings.b,w:kings.w},turn:_turn,castling:{b:castling.b,w:castling.w},ep_square:ep_square,half_moves:half_moves,move_number:move_number})}function make_move(move){var us=_turn,them=swap_color(us);if(push(move),board[move.to]=board[move.from],board[move.from]=null,move.flags&BITS.EP_CAPTURE&&(_turn===BLACK?board[move.to-16]=null:board[move.to+16]=null),move.flags&BITS.PROMOTION&&(board[move.to]={type:move.promotion,color:us}),board[move.to].type===KING){if(kings[board[move.to].color]=move.to,move.flags&BITS.KSIDE_CASTLE){var castling_to=move.to-1,castling_from=move.to+1;board[castling_to]=board[castling_from],board[castling_from]=null}else if(move.flags&BITS.QSIDE_CASTLE){var castling_to=move.to+1,castling_from=move.to-2;board[castling_to]=board[castling_from],board[castling_from]=null}castling[us]=""}if(castling[us])for(var i=0,len=ROOKS[us].length;i<len;i++)if(move.from===ROOKS[us][i].square&&castling[us]&ROOKS[us][i].flag){castling[us]^=ROOKS[us][i].flag;break}if(castling[them])for(var i=0,len=ROOKS[them].length;i<len;i++)if(move.to===ROOKS[them][i].square&&castling[them]&ROOKS[them][i].flag){castling[them]^=ROOKS[them][i].flag;break}ep_square=move.flags&BITS.BIG_PAWN?"b"===_turn?move.to-16:move.to+16:EMPTY,move.piece===PAWN?half_moves=0:move.flags&(BITS.CAPTURE|BITS.EP_CAPTURE)?half_moves=0:half_moves++,_turn===BLACK&&move_number++,_turn=swap_color(_turn)}function undo_move(){var old=_history.pop();if(null==old)return null;var move=old.move;kings=old.kings,_turn=old.turn,castling=old.castling,ep_square=old.ep_square,half_moves=old.half_moves,move_number=old.move_number;var us=_turn,them=swap_color(_turn);if(board[move.from]=board[move.to],board[move.from].type=move.piece,board[move.to]=null,move.flags&BITS.CAPTURE)board[move.to]={type:move.captured,color:them};else if(move.flags&BITS.EP_CAPTURE){var index;index=us===BLACK?move.to-16:move.to+16,board[index]={type:PAWN,color:them}}if(move.flags&(BITS.KSIDE_CASTLE|BITS.QSIDE_CASTLE)){var castling_to,castling_from;move.flags&BITS.KSIDE_CASTLE?(castling_to=move.to+1,castling_from=move.to-1):move.flags&BITS.QSIDE_CASTLE&&(castling_to=move.to-2,castling_from=move.to+1),board[castling_to]=board[castling_from],board[castling_from]=null}return move}function get_disambiguator(move,sloppy){for(var moves=generate_moves({legal:!sloppy}),from=move.from,to=move.to,piece=move.piece,ambiguities=0,same_rank=0,same_file=0,i=0,len=moves.length;i<len;i++){var ambig_from=moves[i].from,ambig_to=moves[i].to;piece===moves[i].piece&&from!==ambig_from&&to===ambig_to&&(ambiguities++,rank(from)===rank(ambig_from)&&same_rank++,file(from)===file(ambig_from)&&same_file++)}return ambiguities>0?same_rank>0&&same_file>0?algebraic(from):same_file>0?algebraic(from).charAt(1):algebraic(from).charAt(0):""}function _ascii(){for(var s=" +------------------------+\n",i=SQUARES.a8;i<=SQUARES.h1;i++){if(0===file(i)&&(s+=" "+"87654321"[rank(i)]+" |"),null==board[i])s+=" . ";else{var piece=board[i].type;s+=" "+(board[i].color===WHITE?piece.toUpperCase():piece.toLowerCase())+" "}i+1&136&&(s+="|\n",i+=8)}return s+=" +------------------------+\n",s+=" a b c d e f g h\n"}function move_from_san(move,sloppy){var clean_move=stripped_san(move);if(sloppy){var matches=clean_move.match(/([pnbrqkPNBRQK])?([a-h][1-8])x?-?([a-h][1-8])([qrbnQRBN])?/);if(matches)var piece=matches[1],from=matches[2],to=matches[3],promotion=matches[4]}for(var moves=generate_moves(),i=0,len=moves.length;i<len;i++){if(clean_move===stripped_san(move_to_san(moves[i]))||sloppy&&clean_move===stripped_san(move_to_san(moves[i],!0)))return moves[i];if(matches&&(!piece||piece.toLowerCase()==moves[i].piece)&&SQUARES[from]==moves[i].from&&SQUARES[to]==moves[i].to&&(!promotion||promotion.toLowerCase()==moves[i].promotion))return moves[i]}return null}function rank(i){return i>>4}function file(i){return 15&i}function algebraic(i){var f=file(i),r=rank(i);return"abcdefgh".substring(f,f+1)+"87654321".substring(r,r+1)}function swap_color(c){return c===WHITE?BLACK:WHITE}function is_digit(c){return-1!=="0123456789".indexOf(c)}function make_pretty(ugly_move){var move=clone(ugly_move);move.san=move_to_san(move,!1),move.to=algebraic(move.to),move.from=algebraic(move.from);var flags="";for(var flag in BITS)BITS[flag]&move.flags&&(flags+=FLAGS[flag]);return move.flags=flags,move}function clone(obj){var dupe=obj instanceof Array?[]:{};for(var property in obj)"object"===(void 0===property?"undefined":_typeof(property))?dupe[property]=clone(obj[property]):dupe[property]=obj[property];return dupe}function trim(str){return str.replace(/^\s+|\s+$/g,"")}function _perft(depth){for(var moves=generate_moves({legal:!1}),nodes=0,color=_turn,i=0,len=moves.length;i<len;i++){if(make_move(moves[i]),!king_attacked(color))if(depth-1>0){var child_nodes=_perft(depth-1);nodes+=child_nodes}else nodes++;undo_move()}return nodes}var BLACK="b",WHITE="w",EMPTY=-1,PAWN="p",KNIGHT="n",BISHOP="b",ROOK="r",QUEEN="q",KING="k",SYMBOLS="pnbrqkPNBRQK",DEFAULT_POSITION="rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1",POSSIBLE_RESULTS=["1-0","0-1","1/2-1/2","*"],PAWN_OFFSETS={b:[16,32,17,15],w:[-16,-32,-17,-15]},PIECE_OFFSETS={n:[-18,-33,-31,-14,18,33,31,14],b:[-17,-15,17,15],r:[-16,1,16,-1],q:[-17,-16,-15,1,17,16,15,-1],k:[-17,-16,-15,1,17,16,15,-1]},ATTACKS=[20,0,0,0,0,0,0,24,0,0,0,0,0,0,20,0,0,20,0,0,0,0,0,24,0,0,0,0,0,20,0,0,0,0,20,0,0,0,0,24,0,0,0,0,20,0,0,0,0,0,0,20,0,0,0,24,0,0,0,20,0,0,0,0,0,0,0,0,20,0,0,24,0,0,20,0,0,0,0,0,0,0,0,0,0,20,2,24,2,20,0,0,0,0,0,0,0,0,0,0,0,2,53,56,53,2,0,0,0,0,0,0,24,24,24,24,24,24,56,0,56,24,24,24,24,24,24,0,0,0,0,0,0,2,53,56,53,2,0,0,0,0,0,0,0,0,0,0,0,20,2,24,2,20,0,0,0,0,0,0,0,0,0,0,20,0,0,24,0,0,20,0,0,0,0,0,0,0,0,20,0,0,0,24,0,0,0,20,0,0,0,0,0,0,20,0,0,0,0,24,0,0,0,0,20,0,0,0,0,20,0,0,0,0,0,24,0,0,0,0,0,20,0,0,20,0,0,0,0,0,0,24,0,0,0,0,0,0,20],RAYS=[17,0,0,0,0,0,0,16,0,0,0,0,0,0,15,0,0,17,0,0,0,0,0,16,0,0,0,0,0,15,0,0,0,0,17,0,0,0,0,16,0,0,0,0,15,0,0,0,0,0,0,17,0,0,0,16,0,0,0,15,0,0,0,0,0,0,0,0,17,0,0,16,0,0,15,0,0,0,0,0,0,0,0,0,0,17,0,16,0,15,0,0,0,0,0,0,0,0,0,0,0,0,17,16,15,0,0,0,0,0,0,0,1,1,1,1,1,1,1,0,-1,-1,-1,-1,-1,-1,-1,0,0,0,0,0,0,0,-15,-16,-17,0,0,0,0,0,0,0,0,0,0,0,0,-15,0,-16,0,-17,0,0,0,0,0,0,0,0,0,0,-15,0,0,-16,0,0,-17,0,0,0,0,0,0,0,0,-15,0,0,0,-16,0,0,0,-17,0,0,0,0,0,0,-15,0,0,0,0,-16,0,0,0,0,-17,0,0,0,0,-15,0,0,0,0,0,-16,0,0,0,0,0,-17,0,0,-15,0,0,0,0,0,0,-16,0,0,0,0,0,0,-17],SHIFTS={p:0,n:1,b:2,r:3,q:4,k:5},FLAGS={NORMAL:"n",CAPTURE:"c",BIG_PAWN:"b",EP_CAPTURE:"e",PROMOTION:"p",KSIDE_CASTLE:"k",QSIDE_CASTLE:"q"},BITS={NORMAL:1,CAPTURE:2,BIG_PAWN:4,EP_CAPTURE:8,PROMOTION:16,KSIDE_CASTLE:32,QSIDE_CASTLE:64},RANK_1=7,RANK_2=6,RANK_7=1,RANK_8=0,SQUARES={a8:0,b8:1,c8:2,d8:3,e8:4,f8:5,g8:6,h8:7,a7:16,b7:17,c7:18,d7:19,e7:20,f7:21,g7:22,h7:23,a6:32,b6:33,c6:34,d6:35,e6:36,f6:37,g6:38,h6:39,a5:48,b5:49,c5:50,d5:51,e5:52,f5:53,g5:54,h5:55,a4:64,b4:65,c4:66,d4:67,e4:68,f4:69,g4:70,h4:71,a3:80,b3:81,c3:82,d3:83,e3:84,f3:85,g3:86,h3:87,a2:96,b2:97,c2:98,d2:99,e2:100,f2:101,g2:102,h2:103,a1:112,b1:113,c1:114,d1:115,e1:116,f1:117,g1:118,h1:119},ROOKS={w:[{square:SQUARES.a1,flag:BITS.QSIDE_CASTLE},{square:SQUARES.h1,flag:BITS.KSIDE_CASTLE}],b:[{square:SQUARES.a8,flag:BITS.QSIDE_CASTLE},{square:SQUARES.h8,flag:BITS.KSIDE_CASTLE}]},board=new Array(128),kings={w:EMPTY,b:EMPTY},_turn=WHITE,castling={w:0,b:0},ep_square=EMPTY,half_moves=0,move_number=1,_history=[],header={};return _load(void 0===fen?DEFAULT_POSITION:fen),{WHITE:WHITE,BLACK:BLACK,PAWN:PAWN,KNIGHT:KNIGHT,BISHOP:BISHOP,ROOK:ROOK,QUEEN:QUEEN,KING:KING,SQUARES:function(){for(var keys=[],i=SQUARES.a8;i<=SQUARES.h1;i++)136&i?i+=7:keys.push(algebraic(i));return keys}(),FLAGS:FLAGS,load:function(fen){return _load(fen)},reset:function(){return _reset()},moves:function(options){for(var ugly_moves=generate_moves(options),moves=[],i=0,len=ugly_moves.length;i<len;i++)void 0!==options&&"verbose"in options&&options.verbose?moves.push(make_pretty(ugly_moves[i])):moves.push(move_to_san(ugly_moves[i],!1));return moves},in_check:function(){return _in_check()},in_checkmate:function(){return _in_checkmate()},in_stalemate:function(){return _in_stalemate()},in_draw:function(){return half_moves>=100||_in_stalemate()||_insufficient_material()||_in_threefold_repetition()},insufficient_material:function(){return _insufficient_material()},in_threefold_repetition:function(){return _in_threefold_repetition()},game_over:function(){return half_moves>=100||_in_checkmate()||_in_stalemate()||_insufficient_material()||_in_threefold_repetition()},validate_fen:function(fen){return _validate_fen(fen)},fen:function(){return generate_fen()},pgn:function(options){var newline="object"===(void 0===options?"undefined":_typeof(options))&&"string"==typeof options.newline_char?options.newline_char:"\n",max_width="object"===(void 0===options?"undefined":_typeof(options))&&"number"==typeof options.max_width?options.max_width:0,result=[],header_exists=!1;for(var i in header)result.push("["+i+' "'+header[i]+'"]'+newline),header_exists=!0;header_exists&&_history.length&&result.push(newline);for(var reversed_history=[];_history.length>0;)reversed_history.push(undo_move());for(var moves=[],move_string="";reversed_history.length>0;){var move=reversed_history.pop();_history.length||"b"!==move.color?"w"===move.color&&(move_string.length&&moves.push(move_string),move_string=move_number+"."):move_string=move_number+". ...",move_string=move_string+" "+move_to_san(move,!1),make_move(move)}if(move_string.length&&moves.push(move_string),void 0!==header.Result&&moves.push(header.Result),0===max_width)return result.join("")+moves.join(" ");for(var current_width=0,i=0;i<moves.length;i++)current_width+moves[i].length>max_width&&0!==i?(" "===result[result.length-1]&&result.pop(),result.push(newline),current_width=0):0!==i&&(result.push(" "),current_width++),result.push(moves[i]),current_width+=moves[i].length;return result.join("")},load_pgn:function(pgn,options){function mask(str){return str.replace(/\\/g,"\\")}var sloppy=void 0!==options&&"sloppy"in options&&options.sloppy,newline_char="object"===(void 0===options?"undefined":_typeof(options))&&"string"==typeof options.newline_char?options.newline_char:"\r?\n",regex=new RegExp("^(\\[(.|"+mask(newline_char)+")*\\])("+mask(newline_char)+")*1.("+mask(newline_char)+"|.)*$","g"),header_string=pgn.replace(regex,"$1");"["!==header_string[0]&&(header_string=""),_reset();var headers=function(header,options){for(var newline_char="object"===(void 0===options?"undefined":_typeof(options))&&"string"==typeof options.newline_char?options.newline_char:"\r?\n",header_obj={},headers=header.split(new RegExp(mask(newline_char))),key="",value="",i=0;i<headers.length;i++)key=headers[i].replace(/^\[([A-Z][A-Za-z]*)\s.*\]$/,"$1"),value=headers[i].replace(/^\[[A-Za-z]+\s"(.*)"\]$/,"$1"),trim(key).length>0&&(header_obj[key]=value);return header_obj}(header_string,options);for(var key in headers)set_header([key,headers[key]]);if("1"===headers.SetUp&&!("FEN"in headers&&_load(headers.FEN)))return!1;var ms=pgn.replace(header_string,"").replace(new RegExp(mask(newline_char),"g")," ");ms=ms.replace(/(\{[^}]+\})+?/g,"");for(var rav_regex=/(\([^\(\)]+\))+?/g;rav_regex.test(ms);)ms=ms.replace(rav_regex,"");ms=ms.replace(/\d+\.(\.\.)?/g,""),ms=ms.replace(/\.\.\./g,""),ms=ms.replace(/\$\d+/g,"");var moves=trim(ms).split(new RegExp(/\s+/));moves=moves.join(",").replace(/,,+/g,",").split(",");for(var move="",half_move=0;half_move<moves.length-1;half_move++){if(null==(move=move_from_san(moves[half_move],sloppy)))return!1;make_move(move)}if(move=moves[moves.length-1],POSSIBLE_RESULTS.indexOf(move)>-1)(function(object){for(var key in object)return!0;return!1})(header)&&void 0===header.Result&&set_header(["Result",move]);else{if(null==(move=move_from_san(move,sloppy)))return!1;make_move(move)}return!0},header:function(){return set_header(arguments)},ascii:function(){return _ascii()},turn:function(){return _turn},move:function(_move,options){var sloppy=void 0!==options&&"sloppy"in options&&options.sloppy,move_obj=null;if("string"==typeof _move)move_obj=move_from_san(_move,sloppy);else if("object"===(void 0===_move?"undefined":_typeof(_move)))for(var moves=generate_moves(),i=0,len=moves.length;i<len;i++)if(!(_move.from!==algebraic(moves[i].from)||_move.to!==algebraic(moves[i].to)||"promotion"in moves[i]&&_move.promotion!==moves[i].promotion)){move_obj=moves[i];break}if(!move_obj)return null;var pretty_move=make_pretty(move_obj);return make_move(move_obj),pretty_move},undo:function(){var move=undo_move();return move?make_pretty(move):null},clear:function(){return _clear()},put:function(piece,square){return _put(piece,square)},get:function(square){return _get(square)},remove:function(square){return _remove(square)},perft:function(depth){return _perft(depth)},square_color:function(square){if(square in SQUARES){var sq_0x88=SQUARES[square];return(rank(sq_0x88)+file(sq_0x88))%2==0?"light":"dark"}return null},history:function(options){for(var reversed_history=[],move_history=[],verbose=(void 0!==options&&"verbose"in options&&options.verbose);_history.length>0;)reversed_history.push(undo_move());for(;reversed_history.length>0;){var move=reversed_history.pop();verbose?move_history.push(make_pretty(move)):move_history.push(move_to_san(move)),make_move(move)}return move_history}}};exports.Chess=Chess,void 0!==(__WEBPACK_AMD_DEFINE_RESULT__=function(){return Chess}.call(exports,__webpack_require__,exports,module))&&(module.exports=__WEBPACK_AMD_DEFINE_RESULT__)},function(module,exports,__webpack_require__){"use strict";function start(state,redrawAll){function toggleOrientation(){board.toggleOrientation(state),redrawAll()}return{set:function(config){config.orientation&&config.orientation!==state.orientation&&toggleOrientation(),(config.fen?anim_1.anim:anim_1.render)(function(state){return config_1.configure(state,config)},state)},state:state,getFen:function(){return fen_1.write(state.pieces)},toggleOrientation:toggleOrientation,setPieces:function(pieces){anim_1.anim(function(state){return board.setPieces(state,pieces)},state)},selectSquare:function(key,force){key?anim_1.anim(function(state){return board.selectSquare(state,key,force)},state):state.selected&&(board.unselect(state),state.dom.redraw())},move:function(orig,dest){anim_1.anim(function(state){return board.baseMove(state,orig,dest)},state)},newPiece:function(piece,key){anim_1.anim(function(state){return board.baseNewPiece(state,piece,key)},state)},playPremove:function(){if(state.premovable.current){if(anim_1.anim(board.playPremove,state))return!0;state.dom.redraw()}return!1},playPredrop:function(validate){if(state.predroppable.current){var result=board.playPredrop(state,validate);return state.dom.redraw(),result}return!1},cancelPremove:function(){anim_1.render(board.unsetPremove,state)},cancelPredrop:function(){anim_1.render(board.unsetPredrop,state)},cancelMove:function(){anim_1.render(function(state){board.cancelMove(state),drag_1.cancel(state)},state)},stop:function(){anim_1.render(function(state){board.stop(state),drag_1.cancel(state)},state)},explode:function(keys){explosion_1.default(state,keys)},setAutoShapes:function(shapes){anim_1.render(function(state){return state.drawable.autoShapes=shapes},state)},setShapes:function(shapes){anim_1.render(function(state){return state.drawable.shapes=shapes},state)},getKeyAtDomPos:function(pos){return board.getKeyAtDomPos(pos,"white"===state.orientation,state.dom.bounds())},redrawAll:redrawAll,dragNewPiece:function(piece,event,force){drag_1.dragNewPiece(state,piece,event,force)},destroy:function(){board.stop(state),state.dom.unbind&&state.dom.unbind(),state.dom.destroyed=!0}}}Object.defineProperty(exports,"__esModule",{value:!0});var board=__webpack_require__(1),fen_1=__webpack_require__(2),config_1=__webpack_require__(5),anim_1=__webpack_require__(4),drag_1=__webpack_require__(6),explosion_1=__webpack_require__(14);exports.start=start},function(module,exports,__webpack_require__){"use strict";function Chessground(element,config){function redrawAll(){var prevUnbind=state.dom&&state.dom.unbind;element.classList.add("cg-board-wrap");var bounds=util.memo(function(){return element.getBoundingClientRect()}),relative=state.viewOnly&&!state.drawable.visible,elements=wrap_1.default(element,state,relative?void 0:bounds()),redrawNow=function(skipSvg){render_1.default(state),!skipSvg&&elements.svg&&svg.renderSvg(state,elements.svg)};state.dom={elements:elements,bounds:bounds,redraw:debounceRedraw(redrawNow),redrawNow:redrawNow,unbind:prevUnbind,relative:relative},state.drawable.prevSvgHash="",redrawNow(!1),events.bindBoard(state),prevUnbind||(state.dom.unbind=events.bindDocument(state,redrawAll))}var state=state_1.defaults();return config_1.configure(state,config||{}),redrawAll(),api_1.start(state,redrawAll)}function debounceRedraw(redrawNow){var redrawing=!1;return function(){redrawing||(redrawing=!0,util.raf(function(){redrawNow(),redrawing=!1}))}}Object.defineProperty(exports,"__esModule",{value:!0});var api_1=__webpack_require__(11),config_1=__webpack_require__(5),state_1=__webpack_require__(17),wrap_1=__webpack_require__(18),events=__webpack_require__(13),render_1=__webpack_require__(16),svg=__webpack_require__(8),util=__webpack_require__(0);exports.Chessground=Chessground},function(module,exports,__webpack_require__){"use strict";function bindBoard(s){if(!s.viewOnly){var boardEl=s.dom.elements.board,onStart=startDragOrDraw(s);boardEl.addEventListener("touchstart",onStart),boardEl.addEventListener("mousedown",onStart),(s.disableContextMenu||s.drawable.enabled)&&boardEl.addEventListener("contextmenu",function(e){return e.preventDefault()})}}function bindDocument(s,redrawAll){var unbinds=[];if(!s.dom.relative&&s.resizable){var onResize=function(){s.dom.bounds.clear(),util_1.raf(redrawAll)};unbinds.push(unbindable(document.body,"chessground.resize",onResize))}if(!s.viewOnly){var onmove_1=dragOrDraw(s,drag.move,draw.move),onend_1=dragOrDraw(s,drag.end,draw.end);["touchmove","mousemove"].forEach(function(ev){return unbinds.push(unbindable(document,ev,onmove_1))}),["touchend","mouseup"].forEach(function(ev){return unbinds.push(unbindable(document,ev,onend_1))});var onScroll=function(){return s.dom.bounds.clear()};unbinds.push(unbindable(window,"scroll",onScroll,{passive:!0})),unbinds.push(unbindable(window,"resize",onScroll,{passive:!0}))}return function(){return unbinds.forEach(function(f){return f()})}}function unbindable(el,eventName,callback,options){return el.addEventListener(eventName,callback,options),function(){return el.removeEventListener(eventName,callback)}}function startDragOrDraw(s){return function(e){s.draggable.current?drag.cancel(s):s.drawable.current?draw.cancel(s):e.shiftKey||util_1.isRightButton(e)?s.drawable.enabled&&draw.start(s,e):s.viewOnly||drag.start(s,e)}}function dragOrDraw(s,withDrag,withDraw){return function(e){e.shiftKey||util_1.isRightButton(e)?s.drawable.enabled&&withDraw(s,e):s.viewOnly||withDrag(s,e)}}Object.defineProperty(exports,"__esModule",{value:!0});var drag=__webpack_require__(6),draw=__webpack_require__(7),util_1=__webpack_require__(0);exports.bindBoard=bindBoard,exports.bindDocument=bindDocument},function(module,exports,__webpack_require__){"use strict";function explosion(state,keys){state.exploding={stage:1,keys:keys},state.dom.redraw(),setTimeout(function(){setStage(state,2),setTimeout(function(){return setStage(state,void 0)},120)},120)}function setStage(state,stage){state.exploding&&(stage?state.exploding.stage=stage:state.exploding=void 0,state.dom.redraw())}Object.defineProperty(exports,"__esModule",{value:!0}),exports.default=explosion},function(module,exports,__webpack_require__){"use strict";function diff(a,b){return Math.abs(a-b)}function pawn(color){return function(x1,y1,x2,y2){return diff(x1,x2)<2&&("white"===color?y2===y1+1||y1<=2&&y2===y1+2&&x1===x2:y2===y1-1||y1>=7&&y2===y1-2&&x1===x2)}}function king(color,rookFiles,canCastle){return function(x1,y1,x2,y2){return diff(x1,x2)<2&&diff(y1,y2)<2||canCastle&&y1===y2&&y1===("white"===color?1:8)&&(5===x1&&(3===x2||7===x2)||util.containsX(rookFiles,x2))}}function rookFilesOf(pieces,color){var piece;return Object.keys(pieces).filter(function(key){return(piece=pieces[key])&&piece.color===color&&"rook"===piece.role}).map(function(key){return util.key2pos(key)[0]})}function premove(pieces,key,canCastle){var mobility,piece=pieces[key],pos=util.key2pos(key);switch(piece.role){case"pawn":mobility=pawn(piece.color);break;case"knight":mobility=knight;break;case"bishop":mobility=bishop;break;case"rook":mobility=rook;break;case"queen":mobility=queen;break;case"king":mobility=king(piece.color,rookFilesOf(pieces,piece.color),canCastle)}return util.allKeys.map(util.key2pos).filter(function(pos2){return(pos[0]!==pos2[0]||pos[1]!==pos2[1])&&mobility(pos[0],pos[1],pos2[0],pos2[1])}).map(util.pos2key)}Object.defineProperty(exports,"__esModule",{value:!0});var util=__webpack_require__(0),knight=function(x1,y1,x2,y2){var xd=diff(x1,x2),yd=diff(y1,y2);return 1===xd&&2===yd||2===xd&&1===yd},bishop=function(x1,y1,x2,y2){return diff(x1,x2)===diff(y1,y2)},rook=function(x1,y1,x2,y2){return x1===x2||y1===y2},queen=function(x1,y1,x2,y2){return bishop(x1,y1,x2,y2)||rook(x1,y1,x2,y2)};exports.default=premove},function(module,exports,__webpack_require__){"use strict";function render(s){var k,p,el,pieceAtKey,elPieceName,anim,fading,pMvdset,pMvd,sMvdset,sMvd,asWhite="white"===s.orientation,posToTranslate=s.dom.relative?util.posToTranslateRel:util.posToTranslateAbs(s.dom.bounds()),translate=s.dom.relative?util.translateRel:util.translateAbs,boardEl=s.dom.elements.board,pieces=s.pieces,curAnim=s.animation.current,anims=curAnim?curAnim.plan.anims:{},fadings=curAnim?curAnim.plan.fadings:{},curDrag=s.draggable.current,squares=computeSquareClasses(s),samePieces={},sameSquares={},movedPieces={},movedSquares={},piecesKeys=Object.keys(pieces);for(el=boardEl.firstChild;el;){if(k=el.cgKey,isPieceNode(el))if(pieceAtKey=pieces[k],anim=anims[k],fading=fadings[k],elPieceName=el.cgPiece,!el.cgDragging||curDrag&&curDrag.orig===k||(el.classList.remove("dragging"),translate(el,posToTranslate(util_1.key2pos(k),asWhite)),el.cgDragging=!1),!fading&&el.cgFading&&(el.cgFading=!1,el.classList.remove("fading")),pieceAtKey){if(anim&&el.cgAnimating&&elPieceName===pieceNameOf(pieceAtKey)){var pos=util_1.key2pos(k);pos[0]+=anim[2],pos[1]+=anim[3],el.classList.add("anim"),translate(el,posToTranslate(pos,asWhite))}else el.cgAnimating&&(el.cgAnimating=!1,el.classList.remove("anim"),translate(el,posToTranslate(util_1.key2pos(k),asWhite)),s.addPieceZIndex&&(el.style.zIndex=posZIndex(util_1.key2pos(k),asWhite)));elPieceName!==pieceNameOf(pieceAtKey)||fading&&el.cgFading?fading&&elPieceName===pieceNameOf(fading)?(el.classList.add("fading"),el.cgFading=!0):movedPieces[elPieceName]?movedPieces[elPieceName].push(el):movedPieces[elPieceName]=[el]:samePieces[k]=!0}else movedPieces[elPieceName]?movedPieces[elPieceName].push(el):movedPieces[elPieceName]=[el];else if(isSquareNode(el)){var cn=el.className;squares[k]===cn?sameSquares[k]=!0:movedSquares[cn]?movedSquares[cn].push(el):movedSquares[cn]=[el]}el=el.nextSibling}for(var sk in squares)if(!sameSquares[sk]){sMvdset=movedSquares[squares[sk]],sMvd=sMvdset&&sMvdset.pop();var translation=posToTranslate(util_1.key2pos(sk),asWhite);if(sMvd)sMvd.cgKey=sk,translate(sMvd,translation);else{var squareNode=util_1.createEl("square",squares[sk]);squareNode.cgKey=sk,translate(squareNode,translation),boardEl.insertBefore(squareNode,boardEl.firstChild)}}for(var j in piecesKeys)if(k=piecesKeys[j],p=pieces[k],anim=anims[k],!samePieces[k])if(pMvdset=movedPieces[pieceNameOf(p)],pMvd=pMvdset&&pMvdset.pop()){pMvd.cgKey=k,pMvd.cgFading&&(pMvd.classList.remove("fading"),pMvd.cgFading=!1);var pos=util_1.key2pos(k);s.addPieceZIndex&&(pMvd.style.zIndex=posZIndex(pos,asWhite)),anim&&(pMvd.cgAnimating=!0,pMvd.classList.add("anim"),pos[0]+=anim[2],pos[1]+=anim[3]),translate(pMvd,posToTranslate(pos,asWhite))}else{var pieceName=pieceNameOf(p),pieceNode=util_1.createEl("piece",pieceName),pos=util_1.key2pos(k);pieceNode.cgPiece=pieceName,pieceNode.cgKey=k,anim&&(pieceNode.cgAnimating=!0,pos[0]+=anim[2],pos[1]+=anim[3]),translate(pieceNode,posToTranslate(pos,asWhite)),s.addPieceZIndex&&(pieceNode.style.zIndex=posZIndex(pos,asWhite)),boardEl.appendChild(pieceNode)}for(var i in movedPieces)removeNodes(s,movedPieces[i]);for(var i in movedSquares)removeNodes(s,movedSquares[i])}function isPieceNode(el){return"PIECE"===el.tagName}function isSquareNode(el){return"SQUARE"===el.tagName}function removeNodes(s,nodes){for(var i in nodes)s.dom.elements.board.removeChild(nodes[i])}function posZIndex(pos,asWhite){var z=2+8*(pos[1]-1)+(8-pos[0]);return asWhite&&(z=67-z),z+""}function pieceNameOf(piece){return piece.color+" "+piece.role}function computeSquareClasses(s){var i,k,squares={};if(s.lastMove&&s.highlight.lastMove)for(i in s.lastMove)addSquare(squares,s.lastMove[i],"last-move");if(s.check&&s.highlight.check&&addSquare(squares,s.check,"check"),s.selected&&(addSquare(squares,s.selected,"selected"),s.movable.showDests)){var dests=s.movable.dests&&s.movable.dests[s.selected];if(dests)for(i in dests)k=dests[i],addSquare(squares,k,"move-dest"+(s.pieces[k]?" oc":""));var pDests=s.premovable.dests;if(pDests)for(i in pDests)k=pDests[i],addSquare(squares,k,"premove-dest"+(s.pieces[k]?" oc":""))}var premove=s.premovable.current;if(premove)for(i in premove)addSquare(squares,premove[i],"current-premove");else s.predroppable.current&&addSquare(squares,s.predroppable.current.key,"current-premove");var o=s.exploding;if(o)for(i in o.keys)addSquare(squares,o.keys[i],"exploding"+o.stage);return squares}function addSquare(squares,key,klass){squares[key]?squares[key]+=" "+klass:squares[key]=klass}Object.defineProperty(exports,"__esModule",{value:!0});var util_1=__webpack_require__(0),util=__webpack_require__(0);exports.default=render},function(module,exports,__webpack_require__){"use strict";function defaults(){return{pieces:fen.read(fen.initial),orientation:"white",turnColor:"white",coordinates:!0,autoCastle:!0,viewOnly:!1,disableContextMenu:!1,resizable:!0,addPieceZIndex:!1,pieceKey:!1,highlight:{lastMove:!0,check:!0},animation:{enabled:!0,duration:200},movable:{free:!0,color:"both",showDests:!0,events:{},rookCastle:!0},premovable:{enabled:!0,showDests:!0,castle:!0,events:{}},predroppable:{enabled:!1,events:{}},draggable:{enabled:!0,distance:3,autoDistance:!0,centerPiece:!0,showGhost:!0,deleteOnDropOff:!1},selectable:{enabled:!0},stats:{dragged:!("ontouchstart"in window)},events:{},drawable:{enabled:!0,visible:!0,eraseOnClick:!0,shapes:[],autoShapes:[],brushes:{green:{key:"g",color:"#15781B",opacity:1,lineWidth:10},red:{key:"r",color:"#882020",opacity:1,lineWidth:10},blue:{key:"b",color:"#003088",opacity:1,lineWidth:10},yellow:{key:"y",color:"#e68f00",opacity:1,lineWidth:10},paleBlue:{key:"pb",color:"#003088",opacity:.4,lineWidth:15},paleGreen:{key:"pg",color:"#15781B",opacity:.4,lineWidth:15},paleRed:{key:"pr",color:"#882020",opacity:.4,lineWidth:15},paleGrey:{key:"pgr",color:"#4a4a4a",opacity:.35,lineWidth:15}},pieces:{baseUrl:"https://lichess1.org/assets/piece/cburnett/"},prevSvgHash:""},hold:util_1.timer()}}Object.defineProperty(exports,"__esModule",{value:!0});var fen=__webpack_require__(2),util_1=__webpack_require__(0);exports.defaults=defaults},function(module,exports,__webpack_require__){"use strict";function wrap(element,s,bounds){element.innerHTML="",element.classList.add("cg-board-wrap"),util_1.colors.forEach(function(c){element.classList.toggle("orientation-"+c,s.orientation===c)}),element.classList.toggle("manipulable",!s.viewOnly);var board=util_1.createEl("div","cg-board");element.appendChild(board);var svg;if(s.drawable.visible&&bounds&&(svg=svg_1.createElement("svg"),svg.appendChild(svg_1.createElement("defs")),element.appendChild(svg)),s.coordinates){var orientClass="black"===s.orientation?" black":"";element.appendChild(renderCoords(types_1.ranks,"ranks"+orientClass)),element.appendChild(renderCoords(types_1.files,"files"+orientClass))}var ghost;return bounds&&s.draggable.showGhost&&(ghost=util_1.createEl("piece","ghost"),util_1.setVisible(ghost,!1),element.appendChild(ghost)),{board:board,ghost:ghost,svg:svg}}function renderCoords(elems,className){var f,el=util_1.createEl("coords",className);for(var i in elems)f=util_1.createEl("coord"),f.textContent=elems[i],el.appendChild(f);return el}Object.defineProperty(exports,"__esModule",{value:!0});var util_1=__webpack_require__(0),types_1=__webpack_require__(3),svg_1=__webpack_require__(8);exports.default=wrap},function(module,__webpack_exports__,__webpack_require__){"use strict";function uniques(arr){return arr.filter(function(elem,index,self){return index===self.indexOf(elem)})}__webpack_exports__.a=uniques},function(module,__webpack_exports__,__webpack_require__){"use strict";function install(Vue){Vue.component("chessboard",__WEBPACK_IMPORTED_MODULE_0__components_chessboard_index_vue___default.a)}Object.defineProperty(__webpack_exports__,"__esModule",{value:!0}),__webpack_exports__.install=install;var __WEBPACK_IMPORTED_MODULE_0__components_chessboard_index_vue__=__webpack_require__(9),__WEBPACK_IMPORTED_MODULE_0__components_chessboard_index_vue___default=__webpack_require__.n(__WEBPACK_IMPORTED_MODULE_0__components_chessboard_index_vue__);__webpack_require__.d(__webpack_exports__,"chessboard",function(){return __WEBPACK_IMPORTED_MODULE_0__components_chessboard_index_vue___default.a});var plugin={version:"0.6.5",install:install};__webpack_exports__.default=plugin;var GlobalVue=null;"undefined"!=typeof window?GlobalVue=window.Vue:"undefined"!=typeof global&&(GlobalVue=global.Vue),GlobalVue&&GlobalVue.use(plugin)},function(module,__webpack_exports__,__webpack_require__){"use strict";Object.defineProperty(__webpack_exports__,"__esModule",{value:!0});var __WEBPACK_IMPORTED_MODULE_0_chess_js__=__webpack_require__(10),__WEBPACK_IMPORTED_MODULE_0_chess_js___default=__webpack_require__.n(__WEBPACK_IMPORTED_MODULE_0_chess_js__),__WEBPACK_IMPORTED_MODULE_1_chessground__=__webpack_require__(12),__WEBPACK_IMPORTED_MODULE_2__Util_js__=(__webpack_require__.n(__WEBPACK_IMPORTED_MODULE_1_chessground__),__webpack_require__(19));__webpack_exports__.default={name:"chessboard",props:{fen:{type:String,default:""},free:{type:Boolean,default:!1},showThreats:{type:Boolean,default:!1},onPromotion:{type:Function,default:function(){return"q"}},orientation:{type:String,default:"white"}},watch:{fen:function(newFen){this.fen=newFen,this.loadPosition()},orientation:function(_orientation){console.log("watch orientation________",_orientation),this.orientation=_orientation,this.loadPosition()},showThreats:function(st){this.showThreats=st,this.showThreats&&this.paintThreats()}},methods:{possibleMoves:function(){var _this=this,dests={};return this.game.SQUARES.forEach(function(s){var ms=_this.game.moves({square:s,verbose:!0});ms.length&&(dests[s]=ms.map(function(m){return m.to}))}),dests},opponentMoves:function(){var originalPGN=this.game.pgn(),tokens=this.game.fen().split(" ");if(tokens[1]="w"===tokens[1]?"b":"w",tokens=tokens.join(" "),this.game.load(tokens)){var moves=this.game.moves({verbose:!0});return this.game.load_pgn(originalPGN),moves}return[]},toColor:function(){return"w"===this.game.turn()?"white":"black"},paintThreats:function(){var moves=this.game.moves({verbose:!0}),threats=[];moves.forEach(function(move){threats.push({orig:move.to,brush:"yellow"}),move.captured&&threats.push({orig:move.from,dest:move.to,brush:"red"}),move.san.includes("+")&&threats.push({orig:move.from,dest:move.to,brush:"blue"})}),this.board.setShapes(threats)},calculatePromotions:function(){var moves=this.game.moves({verbose:!0});this.promotions=[];var _iteratorNormalCompletion=!0,_didIteratorError=!1,_iteratorError=void 0;try{for(var _step,_iterator=moves[Symbol.iterator]();!(_iteratorNormalCompletion=(_step=_iterator.next()).done);_iteratorNormalCompletion=!0){var move=_step.value;move.promotion&&this.promotions.push(move)}}catch(err){_didIteratorError=!0,_iteratorError=err}finally{try{!_iteratorNormalCompletion&&_iterator.return&&_iterator.return()}finally{if(_didIteratorError)throw _iteratorError}}},isPromotion:function(orig,dest){return this.promotions.filter(function(move){return move.from===orig&&move.to===dest}).length>0},changeTurn:function(){var _this2=this;return function(orig,dest,metadata){_this2.isPromotion(orig,dest)&&(_this2.promoteTo=_this2.onPromotion()),_this2.game.move({from:orig,to:dest,promotion:_this2.promoteTo}),_this2.board.set({fen:_this2.game.fen(),turnColor:_this2.toColor(),movable:{color:_this2.toColor(),dests:_this2.possibleMoves()}}),_this2.calculatePromotions(),_this2.afterMove()}},afterMove:function(){this.showThreats&&this.paintThreats();var threats=this.countThreats(this.toColor());threats.history=this.game.history(),threats.fen=this.game.fen(),this.$emit("onMove",threats)},countThreats:function(color){var threats={},captures=0,checks=0,moves=this.game.moves({verbose:!0});return color!==this.toColor()&&(moves=this.opponentMoves()),0===moves.length?null:(moves.forEach(function(move){move.captured&&captures++,move.san.includes("+")&&checks++}),threats["legal_"+color]=__webpack_require__.i(__WEBPACK_IMPORTED_MODULE_2__Util_js__.a)(moves.map(function(x){return x.from+x.to})).length,threats["checks_"+color]=checks,threats["threat_"+color]=captures,threats.turn=color,threats)},loadPosition:function(){this.game.load(this.fen),this.board=__webpack_require__.i(__WEBPACK_IMPORTED_MODULE_1_chessground__.Chessground)(this.$refs.board,{fen:this.game.fen(),turnColor:this.toColor(),movable:{color:this.toColor(),free:this.free,dests:this.possibleMoves()},orientation:this.orientation}),this.board.set({movable:{events:{after:this.changeTurn()}}}),this.afterMove()}},mounted:function(){this.loadPosition()},created:function(){this.game=new __WEBPACK_IMPORTED_MODULE_0_chess_js___default.a,this.board=null,this.promotions=[],this.promoteTo="q"}}},function(module,exports){module.exports=function(rawScriptExports,compiledTemplate,scopeId,cssModules){var esModule,scriptExports=rawScriptExports=rawScriptExports||{},type=typeof rawScriptExports.default;"object"!==type&&"function"!==type||(esModule=rawScriptExports,scriptExports=rawScriptExports.default);var 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+/*!*************************************************************!*\ + !*** ./node_modules/vue-chessboard/dist/vue-chessboard.css ***! + \*************************************************************/ +/*! no static exports found */ +/***/ (function(module, exports, __webpack_require__) { + + +var content = __webpack_require__(/*! !../../css-loader??ref--6-1!../../postcss-loader/src??ref--6-2!./vue-chessboard.css */ "./node_modules/css-loader/index.js?!./node_modules/postcss-loader/src/index.js?!./node_modules/vue-chessboard/dist/vue-chessboard.css"); + +if(typeof content === 'string') content = [[module.i, content, '']]; + +var transform; +var insertInto; + + + +var options = {"hmr":true} + +options.transform = transform +options.insertInto = undefined; + +var update = __webpack_require__(/*! ../../style-loader/lib/addStyles.js */ "./node_modules/style-loader/lib/addStyles.js")(content, options); + +if(content.locals) module.exports = content.locals; + +if(false) {} + +/***/ }), + +/***/ "./node_modules/vue-chessboard/index.js": +/*!**********************************************!*\ + !*** ./node_modules/vue-chessboard/index.js ***! + \**********************************************/ +/*! no static exports found */ +/***/ (function(module, __webpack_exports__, __webpack_require__) { + +"use strict"; +__webpack_require__.r(__webpack_exports__); +/* harmony import */ var _dist_vue_chessboard_common__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./dist/vue-chessboard.common */ "./node_modules/vue-chessboard/dist/vue-chessboard.common.js"); +/* harmony import */ var _dist_vue_chessboard_common__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(_dist_vue_chessboard_common__WEBPACK_IMPORTED_MODULE_0__); +/* harmony reexport (default from non-harmony) */ __webpack_require__.d(__webpack_exports__, "default", function() { return _dist_vue_chessboard_common__WEBPACK_IMPORTED_MODULE_0___default.a; }); +/* harmony reexport (unknown) */ for(var __WEBPACK_IMPORT_KEY__ in _dist_vue_chessboard_common__WEBPACK_IMPORTED_MODULE_0__) if(["default","default"].indexOf(__WEBPACK_IMPORT_KEY__) < 0) (function(key) { __webpack_require__.d(__webpack_exports__, key, function() { return _dist_vue_chessboard_common__WEBPACK_IMPORTED_MODULE_0__[key]; }) }(__WEBPACK_IMPORT_KEY__)); +/* harmony import */ var _dist_vue_chessboard_css__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ./dist/vue-chessboard.css */ "./node_modules/vue-chessboard/dist/vue-chessboard.css"); +/* harmony import */ var _dist_vue_chessboard_css__WEBPACK_IMPORTED_MODULE_1___default = /*#__PURE__*/__webpack_require__.n(_dist_vue_chessboard_css__WEBPACK_IMPORTED_MODULE_1__); + + + + + +/***/ }), + +/***/ "./node_modules/vue-loader/lib/loaders/templateLoader.js?!./node_modules/vue-loader/lib/index.js?!./resources/js/components/chessTable.vue?vue&type=template&id=a1d2c38e&": +/*!*************************************************************************************************************************************************************************************************************!*\ + !*** ./node_modules/vue-loader/lib/loaders/templateLoader.js??vue-loader-options!./node_modules/vue-loader/lib??vue-loader-options!./resources/js/components/chessTable.vue?vue&type=template&id=a1d2c38e& ***! + \*************************************************************************************************************************************************************************************************************/ +/*! exports provided: render, staticRenderFns */ +/***/ (function(module, __webpack_exports__, __webpack_require__) { + +"use strict"; +__webpack_require__.r(__webpack_exports__); +/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "render", function() { return render; }); +/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "staticRenderFns", function() { return staticRenderFns; }); +var render = function() { + var _vm = this + var _h = _vm.$createElement + var _c = _vm._self._c || _h + return _c( + "div", + {}, + [ + _c("chessboard", { + attrs: { showThreats: _vm.showThreats }, + on: { onMove: _vm.showInfo } + }) + ], + 1 + ) +} +var staticRenderFns = [] +render._withStripped = true + + + +/***/ }), + +/***/ "./node_modules/vue-loader/lib/runtime/componentNormalizer.js": +/*!********************************************************************!*\ + !*** ./node_modules/vue-loader/lib/runtime/componentNormalizer.js ***! + \********************************************************************/ +/*! exports provided: default */ +/***/ (function(module, __webpack_exports__, __webpack_require__) { + +"use strict"; +__webpack_require__.r(__webpack_exports__); +/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "default", function() { return normalizeComponent; }); +/* globals __VUE_SSR_CONTEXT__ */ + +// IMPORTANT: Do NOT use ES2015 features in this file (except for modules). +// This module is a runtime utility for cleaner component module output and will +// be included in the final webpack user bundle. + +function normalizeComponent ( + scriptExports, + render, + staticRenderFns, + functionalTemplate, + injectStyles, + scopeId, + moduleIdentifier, /* server only */ + shadowMode /* vue-cli only */ +) { + // Vue.extend constructor export interop + var options = typeof scriptExports === 'function' + ? scriptExports.options + : scriptExports + + // render functions + if (render) { + options.render = render + options.staticRenderFns = staticRenderFns + options._compiled = true + } + + // functional template + if (functionalTemplate) { + options.functional = true + } + + // scopedId + if (scopeId) { + options._scopeId = 'data-v-' + scopeId + } + + var hook + if (moduleIdentifier) { // server build + hook = function (context) { + // 2.3 injection + context = + context || // cached call + (this.$vnode && this.$vnode.ssrContext) || // stateful + (this.parent && this.parent.$vnode && this.parent.$vnode.ssrContext) // functional + // 2.2 with runInNewContext: true + if (!context && typeof __VUE_SSR_CONTEXT__ !== 'undefined') { + context = __VUE_SSR_CONTEXT__ + } + // inject component styles + if (injectStyles) { + injectStyles.call(this, context) + } + // register component module identifier for async chunk inferrence + if (context && context._registeredComponents) { + context._registeredComponents.add(moduleIdentifier) + } + } + // used by ssr in case component is cached and beforeCreate + // never gets called + options._ssrRegister = hook + } else if (injectStyles) { + hook = shadowMode + ? function () { injectStyles.call(this, this.$root.$options.shadowRoot) } + : injectStyles + } + + if (hook) { + if (options.functional) { + // for template-only hot-reload because in that case the render fn doesn't + // go through the normalizer + options._injectStyles = hook + // register for functioal component in vue file + var originalRender = options.render + options.render = function renderWithStyleInjection (h, context) { + hook.call(context) + return originalRender(h, context) + } + } else { + // inject component registration as beforeCreate hook + var existing = options.beforeCreate + options.beforeCreate = existing + ? [].concat(existing, hook) + : [hook] + } + } + + return { + exports: scriptExports, + options: options + } +} + + +/***/ }), + +/***/ "./node_modules/vue/dist/vue.common.dev.js": +/*!*************************************************!*\ + !*** ./node_modules/vue/dist/vue.common.dev.js ***! + \*************************************************/ +/*! no static exports found */ +/***/ (function(module, exports, __webpack_require__) { + +"use strict"; +/* WEBPACK VAR INJECTION */(function(global, setImmediate) {/*! + * Vue.js v2.6.10 + * (c) 2014-2019 Evan You + * Released under the MIT License. + */ + + +/* */ + +var emptyObject = Object.freeze({}); + +// These helpers produce better VM code in JS engines due to their +// explicitness and function inlining. +function isUndef (v) { + return v === undefined || v === null +} + +function isDef (v) { + return v !== undefined && v !== null +} + +function isTrue (v) { + return v === true +} + +function isFalse (v) { + return v === false +} + +/** + * Check if value is primitive. + */ +function isPrimitive (value) { + return ( + typeof value === 'string' || + typeof value === 'number' || + // $flow-disable-line + typeof value === 'symbol' || + typeof value === 'boolean' + ) +} + +/** + * Quick object check - this is primarily used to tell + * Objects from primitive values when we know the value + * is a JSON-compliant type. + */ +function isObject (obj) { + return obj !== null && typeof obj === 'object' +} + +/** + * Get the raw type string of a value, e.g., [object Object]. + */ +var _toString = Object.prototype.toString; + +function toRawType (value) { + return _toString.call(value).slice(8, -1) +} + +/** + * Strict object type check. Only returns true + * for plain JavaScript objects. + */ +function isPlainObject (obj) { + return _toString.call(obj) === '[object Object]' +} + +function isRegExp (v) { + return _toString.call(v) === '[object RegExp]' +} + +/** + * Check if val is a valid array index. + */ +function isValidArrayIndex (val) { + var n = parseFloat(String(val)); + return n >= 0 && Math.floor(n) === n && isFinite(val) +} + +function isPromise (val) { + return ( + isDef(val) && + typeof val.then === 'function' && + typeof val.catch === 'function' + ) +} + +/** + * Convert a value to a string that is actually rendered. + */ +function toString (val) { + return val == null + ? '' + : Array.isArray(val) || (isPlainObject(val) && val.toString === _toString) + ? JSON.stringify(val, null, 2) + : String(val) +} + +/** + * Convert an input value to a number for persistence. + * If the conversion fails, return original string. + */ +function toNumber (val) { + var n = parseFloat(val); + return isNaN(n) ? val : n +} + +/** + * Make a map and return a function for checking if a key + * is in that map. + */ +function makeMap ( + str, + expectsLowerCase +) { + var map = Object.create(null); + var list = str.split(','); + for (var i = 0; i < list.length; i++) { + map[list[i]] = true; + } + return expectsLowerCase + ? function (val) { return map[val.toLowerCase()]; } + : function (val) { return map[val]; } +} + +/** + * Check if a tag is a built-in tag. + */ +var isBuiltInTag = makeMap('slot,component', true); + +/** + * Check if an attribute is a reserved attribute. + */ +var isReservedAttribute = makeMap('key,ref,slot,slot-scope,is'); + +/** + * Remove an item from an array. + */ +function remove (arr, item) { + if (arr.length) { + var index = arr.indexOf(item); + if (index > -1) { + return arr.splice(index, 1) + } + } +} + +/** + * Check whether an object has the property. + */ +var hasOwnProperty = Object.prototype.hasOwnProperty; +function hasOwn (obj, key) { + return hasOwnProperty.call(obj, key) +} + +/** + * Create a cached version of a pure function. + */ +function cached (fn) { + var cache = Object.create(null); + return (function cachedFn (str) { + var hit = cache[str]; + return hit || (cache[str] = fn(str)) + }) +} + +/** + * Camelize a hyphen-delimited string. + */ +var camelizeRE = /-(\w)/g; +var camelize = cached(function (str) { + return str.replace(camelizeRE, function (_, c) { return c ? c.toUpperCase() : ''; }) +}); + +/** + * Capitalize a string. + */ +var capitalize = cached(function (str) { + return str.charAt(0).toUpperCase() + str.slice(1) +}); + +/** + * Hyphenate a camelCase string. + */ +var hyphenateRE = /\B([A-Z])/g; +var hyphenate = cached(function (str) { + return str.replace(hyphenateRE, '-$1').toLowerCase() +}); + +/** + * Simple bind polyfill for environments that do not support it, + * e.g., PhantomJS 1.x. Technically, we don't need this anymore + * since native bind is now performant enough in most browsers. + * But removing it would mean breaking code that was able to run in + * PhantomJS 1.x, so this must be kept for backward compatibility. + */ + +/* istanbul ignore next */ +function polyfillBind (fn, ctx) { + function boundFn (a) { + var l = arguments.length; + return l + ? l > 1 + ? fn.apply(ctx, arguments) + : fn.call(ctx, a) + : fn.call(ctx) + } + + boundFn._length = fn.length; + return boundFn +} + +function nativeBind (fn, ctx) { + return fn.bind(ctx) +} + +var bind = Function.prototype.bind + ? nativeBind + : polyfillBind; + +/** + * Convert an Array-like object to a real Array. + */ +function toArray (list, start) { + start = start || 0; + var i = list.length - start; + var ret = new Array(i); + while (i--) { + ret[i] = list[i + start]; + } + return ret +} + +/** + * Mix properties into target object. + */ +function extend (to, _from) { + for (var key in _from) { + to[key] = _from[key]; + } + return to +} + +/** + * Merge an Array of Objects into a single Object. + */ +function toObject (arr) { + var res = {}; + for (var i = 0; i < arr.length; i++) { + if (arr[i]) { + extend(res, arr[i]); + } + } + return res +} + +/* eslint-disable no-unused-vars */ + +/** + * Perform no operation. + * Stubbing args to make Flow happy without leaving useless transpiled code + * with ...rest (https://flow.org/blog/2017/05/07/Strict-Function-Call-Arity/). + */ +function noop (a, b, c) {} + +/** + * Always return false. + */ +var no = function (a, b, c) { return false; }; + +/* eslint-enable no-unused-vars */ + +/** + * Return the same value. + */ +var identity = function (_) { return _; }; + +/** + * Generate a string containing static keys from compiler modules. + */ +function genStaticKeys (modules) { + return modules.reduce(function (keys, m) { + return keys.concat(m.staticKeys || []) + }, []).join(',') +} + +/** + * Check if two values are loosely equal - that is, + * if they are plain objects, do they have the same shape? + */ +function looseEqual (a, b) { + if (a === b) { return true } + var isObjectA = isObject(a); + var isObjectB = isObject(b); + if (isObjectA && isObjectB) { + try { + var isArrayA = Array.isArray(a); + var isArrayB = Array.isArray(b); + if (isArrayA && isArrayB) { + return a.length === b.length && a.every(function (e, i) { + return looseEqual(e, b[i]) + }) + } else if (a instanceof Date && b instanceof Date) { + return a.getTime() === b.getTime() + } else if (!isArrayA && !isArrayB) { + var keysA = Object.keys(a); + var keysB = Object.keys(b); + return keysA.length === keysB.length && keysA.every(function (key) { + return looseEqual(a[key], b[key]) + }) + } else { + /* istanbul ignore next */ + return false + } + } catch (e) { + /* istanbul ignore next */ + return false + } + } else if (!isObjectA && !isObjectB) { + return String(a) === String(b) + } else { + return false + } +} + +/** + * Return the first index at which a loosely equal value can be + * found in the array (if value is a plain object, the array must + * contain an object of the same shape), or -1 if it is not present. + */ +function looseIndexOf (arr, val) { + for (var i = 0; i < arr.length; i++) { + if (looseEqual(arr[i], val)) { return i } + } + return -1 +} + +/** + * Ensure a function is called only once. + */ +function once (fn) { + var called = false; + return function () { + if (!called) { + called = true; + fn.apply(this, arguments); + } + } +} + +var SSR_ATTR = 'data-server-rendered'; + +var ASSET_TYPES = [ + 'component', + 'directive', + 'filter' +]; + +var LIFECYCLE_HOOKS = [ + 'beforeCreate', + 'created', + 'beforeMount', + 'mounted', + 'beforeUpdate', + 'updated', + 'beforeDestroy', + 'destroyed', + 'activated', + 'deactivated', + 'errorCaptured', + 'serverPrefetch' +]; + +/* */ + + + +var config = ({ + /** + * Option merge strategies (used in core/util/options) + */ + // $flow-disable-line + optionMergeStrategies: Object.create(null), + + /** + * Whether to suppress warnings. + */ + silent: false, + + /** + * Show production mode tip message on boot? + */ + productionTip: "development" !== 'production', + + /** + * Whether to enable devtools + */ + devtools: "development" !== 'production', + + /** + * Whether to record perf + */ + performance: false, + + /** + * Error handler for watcher errors + */ + errorHandler: null, + + /** + * Warn handler for watcher warns + */ + warnHandler: null, + + /** + * Ignore certain custom elements + */ + ignoredElements: [], + + /** + * Custom user key aliases for v-on + */ + // $flow-disable-line + keyCodes: Object.create(null), + + /** + * Check if a tag is reserved so that it cannot be registered as a + * component. This is platform-dependent and may be overwritten. + */ + isReservedTag: no, + + /** + * Check if an attribute is reserved so that it cannot be used as a component + * prop. This is platform-dependent and may be overwritten. + */ + isReservedAttr: no, + + /** + * Check if a tag is an unknown element. + * Platform-dependent. + */ + isUnknownElement: no, + + /** + * Get the namespace of an element + */ + getTagNamespace: noop, + + /** + * Parse the real tag name for the specific platform. + */ + parsePlatformTagName: identity, + + /** + * Check if an attribute must be bound using property, e.g. value + * Platform-dependent. + */ + mustUseProp: no, + + /** + * Perform updates asynchronously. Intended to be used by Vue Test Utils + * This will significantly reduce performance if set to false. + */ + async: true, + + /** + * Exposed for legacy reasons + */ + _lifecycleHooks: LIFECYCLE_HOOKS +}); + +/* */ + +/** + * unicode letters used for parsing html tags, component names and property paths. + * using https://www.w3.org/TR/html53/semantics-scripting.html#potentialcustomelementname + * skipping \u10000-\uEFFFF due to it freezing up PhantomJS + */ +var unicodeRegExp = /a-zA-Z\u00B7\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u037D\u037F-\u1FFF\u200C-\u200D\u203F-\u2040\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD/; + +/** + * Check if a string starts with $ or _ + */ +function isReserved (str) { + var c = (str + '').charCodeAt(0); + return c === 0x24 || c === 0x5F +} + +/** + * Define a property. + */ +function def (obj, key, val, enumerable) { + Object.defineProperty(obj, key, { + value: val, + enumerable: !!enumerable, + writable: true, + configurable: true + }); +} + +/** + * Parse simple path. + */ +var bailRE = new RegExp(("[^" + (unicodeRegExp.source) + ".$_\\d]")); +function parsePath (path) { + if (bailRE.test(path)) { + return + } + var segments = path.split('.'); + return function (obj) { + for (var i = 0; i < segments.length; i++) { + if (!obj) { return } + obj = obj[segments[i]]; + } + return obj + } +} + +/* */ + +// can we use __proto__? +var hasProto = '__proto__' in {}; + +// Browser environment sniffing +var inBrowser = typeof window !== 'undefined'; +var inWeex = typeof WXEnvironment !== 'undefined' && !!WXEnvironment.platform; +var weexPlatform = inWeex && WXEnvironment.platform.toLowerCase(); +var UA = inBrowser && window.navigator.userAgent.toLowerCase(); +var isIE = UA && /msie|trident/.test(UA); +var isIE9 = UA && UA.indexOf('msie 9.0') > 0; +var isEdge = UA && UA.indexOf('edge/') > 0; +var isAndroid = (UA && UA.indexOf('android') > 0) || (weexPlatform === 'android'); +var isIOS = (UA && /iphone|ipad|ipod|ios/.test(UA)) || (weexPlatform === 'ios'); +var isChrome = UA && /chrome\/\d+/.test(UA) && !isEdge; +var isPhantomJS = UA && /phantomjs/.test(UA); +var isFF = UA && UA.match(/firefox\/(\d+)/); + +// Firefox has a "watch" function on Object.prototype... +var nativeWatch = ({}).watch; + +var supportsPassive = false; +if (inBrowser) { + try { + var opts = {}; + Object.defineProperty(opts, 'passive', ({ + get: function get () { + /* istanbul ignore next */ + supportsPassive = true; + } + })); // https://github.com/facebook/flow/issues/285 + window.addEventListener('test-passive', null, opts); + } catch (e) {} +} + +// this needs to be lazy-evaled because vue may be required before +// vue-server-renderer can set VUE_ENV +var _isServer; +var isServerRendering = function () { + if (_isServer === undefined) { + /* istanbul ignore if */ + if (!inBrowser && !inWeex && typeof global !== 'undefined') { + // detect presence of vue-server-renderer and avoid + // Webpack shimming the process + _isServer = global['process'] && global['process'].env.VUE_ENV === 'server'; + } else { + _isServer = false; + } + } + return _isServer +}; + +// detect devtools +var devtools = inBrowser && window.__VUE_DEVTOOLS_GLOBAL_HOOK__; + +/* istanbul ignore next */ +function isNative (Ctor) { + return typeof Ctor === 'function' && /native code/.test(Ctor.toString()) +} + +var hasSymbol = + typeof Symbol !== 'undefined' && isNative(Symbol) && + typeof Reflect !== 'undefined' && isNative(Reflect.ownKeys); + +var _Set; +/* istanbul ignore if */ // $flow-disable-line +if (typeof Set !== 'undefined' && isNative(Set)) { + // use native Set when available. + _Set = Set; +} else { + // a non-standard Set polyfill that only works with primitive keys. + _Set = /*@__PURE__*/(function () { + function Set () { + this.set = Object.create(null); + } + Set.prototype.has = function has (key) { + return this.set[key] === true + }; + Set.prototype.add = function add (key) { + this.set[key] = true; + }; + Set.prototype.clear = function clear () { + this.set = Object.create(null); + }; + + return Set; + }()); +} + +/* */ + +var warn = noop; +var tip = noop; +var generateComponentTrace = (noop); // work around flow check +var formatComponentName = (noop); + +{ + var hasConsole = typeof console !== 'undefined'; + var classifyRE = /(?:^|[-_])(\w)/g; + var classify = function (str) { return str + .replace(classifyRE, function (c) { return c.toUpperCase(); }) + .replace(/[-_]/g, ''); }; + + warn = function (msg, vm) { + var trace = vm ? generateComponentTrace(vm) : ''; + + if (config.warnHandler) { + config.warnHandler.call(null, msg, vm, trace); + } else if (hasConsole && (!config.silent)) { + console.error(("[Vue warn]: " + msg + trace)); + } + }; + + tip = function (msg, vm) { + if (hasConsole && (!config.silent)) { + console.warn("[Vue tip]: " + msg + ( + vm ? generateComponentTrace(vm) : '' + )); + } + }; + + formatComponentName = function (vm, includeFile) { + if (vm.$root === vm) { + return '<Root>' + } + var options = typeof vm === 'function' && vm.cid != null + ? vm.options + : vm._isVue + ? vm.$options || vm.constructor.options + : vm; + var name = options.name || options._componentTag; + var file = options.__file; + if (!name && file) { + var match = file.match(/([^/\\]+)\.vue$/); + name = match && match[1]; + } + + return ( + (name ? ("<" + (classify(name)) + ">") : "<Anonymous>") + + (file && includeFile !== false ? (" at " + file) : '') + ) + }; + + var repeat = function (str, n) { + var res = ''; + while (n) { + if (n % 2 === 1) { res += str; } + if (n > 1) { str += str; } + n >>= 1; + } + return res + }; + + generateComponentTrace = function (vm) { + if (vm._isVue && vm.$parent) { + var tree = []; + var currentRecursiveSequence = 0; + while (vm) { + if (tree.length > 0) { + var last = tree[tree.length - 1]; + if (last.constructor === vm.constructor) { + currentRecursiveSequence++; + vm = vm.$parent; + continue + } else if (currentRecursiveSequence > 0) { + tree[tree.length - 1] = [last, currentRecursiveSequence]; + currentRecursiveSequence = 0; + } + } + tree.push(vm); + vm = vm.$parent; + } + return '\n\nfound in\n\n' + tree + .map(function (vm, i) { return ("" + (i === 0 ? '---> ' : repeat(' ', 5 + i * 2)) + (Array.isArray(vm) + ? ((formatComponentName(vm[0])) + "... (" + (vm[1]) + " recursive calls)") + : formatComponentName(vm))); }) + .join('\n') + } else { + return ("\n\n(found in " + (formatComponentName(vm)) + ")") + } + }; +} + +/* */ + +var uid = 0; + +/** + * A dep is an observable that can have multiple + * directives subscribing to it. + */ +var Dep = function Dep () { + this.id = uid++; + this.subs = []; +}; + +Dep.prototype.addSub = function addSub (sub) { + this.subs.push(sub); +}; + +Dep.prototype.removeSub = function removeSub (sub) { + remove(this.subs, sub); +}; + +Dep.prototype.depend = function depend () { + if (Dep.target) { + Dep.target.addDep(this); + } +}; + +Dep.prototype.notify = function notify () { + // stabilize the subscriber list first + var subs = this.subs.slice(); + if (!config.async) { + // subs aren't sorted in scheduler if not running async + // we need to sort them now to make sure they fire in correct + // order + subs.sort(function (a, b) { return a.id - b.id; }); + } + for (var i = 0, l = subs.length; i < l; i++) { + subs[i].update(); + } +}; + +// The current target watcher being evaluated. +// This is globally unique because only one watcher +// can be evaluated at a time. +Dep.target = null; +var targetStack = []; + +function pushTarget (target) { + targetStack.push(target); + Dep.target = target; +} + +function popTarget () { + targetStack.pop(); + Dep.target = targetStack[targetStack.length - 1]; +} + +/* */ + +var VNode = function VNode ( + tag, + data, + children, + text, + elm, + context, + componentOptions, + asyncFactory +) { + this.tag = tag; + this.data = data; + this.children = children; + this.text = text; + this.elm = elm; + this.ns = undefined; + this.context = context; + this.fnContext = undefined; + this.fnOptions = undefined; + this.fnScopeId = undefined; + this.key = data && data.key; + this.componentOptions = componentOptions; + this.componentInstance = undefined; + this.parent = undefined; + this.raw = false; + this.isStatic = false; + this.isRootInsert = true; + this.isComment = false; + this.isCloned = false; + this.isOnce = false; + this.asyncFactory = asyncFactory; + this.asyncMeta = undefined; + this.isAsyncPlaceholder = false; +}; + +var prototypeAccessors = { child: { configurable: true } }; + +// DEPRECATED: alias for componentInstance for backwards compat. +/* istanbul ignore next */ +prototypeAccessors.child.get = function () { + return this.componentInstance +}; + +Object.defineProperties( VNode.prototype, prototypeAccessors ); + +var createEmptyVNode = function (text) { + if ( text === void 0 ) text = ''; + + var node = new VNode(); + node.text = text; + node.isComment = true; + return node +}; + +function createTextVNode (val) { + return new VNode(undefined, undefined, undefined, String(val)) +} + +// optimized shallow clone +// used for static nodes and slot nodes because they may be reused across +// multiple renders, cloning them avoids errors when DOM manipulations rely +// on their elm reference. +function cloneVNode (vnode) { + var cloned = new VNode( + vnode.tag, + vnode.data, + // #7975 + // clone children array to avoid mutating original in case of cloning + // a child. + vnode.children && vnode.children.slice(), + vnode.text, + vnode.elm, + vnode.context, + vnode.componentOptions, + vnode.asyncFactory + ); + cloned.ns = vnode.ns; + cloned.isStatic = vnode.isStatic; + cloned.key = vnode.key; + cloned.isComment = vnode.isComment; + cloned.fnContext = vnode.fnContext; + cloned.fnOptions = vnode.fnOptions; + cloned.fnScopeId = vnode.fnScopeId; + cloned.asyncMeta = vnode.asyncMeta; + cloned.isCloned = true; + return cloned +} + +/* + * not type checking this file because flow doesn't play well with + * dynamically accessing methods on Array prototype + */ + +var arrayProto = Array.prototype; +var arrayMethods = Object.create(arrayProto); + +var methodsToPatch = [ + 'push', + 'pop', + 'shift', + 'unshift', + 'splice', + 'sort', + 'reverse' +]; + +/** + * Intercept mutating methods and emit events + */ +methodsToPatch.forEach(function (method) { + // cache original method + var original = arrayProto[method]; + def(arrayMethods, method, function mutator () { + var args = [], len = arguments.length; + while ( len-- ) args[ len ] = arguments[ len ]; + + var result = original.apply(this, args); + var ob = this.__ob__; + var inserted; + switch (method) { + case 'push': + case 'unshift': + inserted = args; + break + case 'splice': + inserted = args.slice(2); + break + } + if (inserted) { ob.observeArray(inserted); } + // notify change + ob.dep.notify(); + return result + }); +}); + +/* */ + +var arrayKeys = Object.getOwnPropertyNames(arrayMethods); + +/** + * In some cases we may want to disable observation inside a component's + * update computation. + */ +var shouldObserve = true; + +function toggleObserving (value) { + shouldObserve = value; +} + +/** + * Observer class that is attached to each observed + * object. Once attached, the observer converts the target + * object's property keys into getter/setters that + * collect dependencies and dispatch updates. + */ +var Observer = function Observer (value) { + this.value = value; + this.dep = new Dep(); + this.vmCount = 0; + def(value, '__ob__', this); + if (Array.isArray(value)) { + if (hasProto) { + protoAugment(value, arrayMethods); + } else { + copyAugment(value, arrayMethods, arrayKeys); + } + this.observeArray(value); + } else { + this.walk(value); + } +}; + +/** + * Walk through all properties and convert them into + * getter/setters. This method should only be called when + * value type is Object. + */ +Observer.prototype.walk = function walk (obj) { + var keys = Object.keys(obj); + for (var i = 0; i < keys.length; i++) { + defineReactive$$1(obj, keys[i]); + } +}; + +/** + * Observe a list of Array items. + */ +Observer.prototype.observeArray = function observeArray (items) { + for (var i = 0, l = items.length; i < l; i++) { + observe(items[i]); + } +}; + +// helpers + +/** + * Augment a target Object or Array by intercepting + * the prototype chain using __proto__ + */ +function protoAugment (target, src) { + /* eslint-disable no-proto */ + target.__proto__ = src; + /* eslint-enable no-proto */ +} + +/** + * Augment a target Object or Array by defining + * hidden properties. + */ +/* istanbul ignore next */ +function copyAugment (target, src, keys) { + for (var i = 0, l = keys.length; i < l; i++) { + var key = keys[i]; + def(target, key, src[key]); + } +} + +/** + * Attempt to create an observer instance for a value, + * returns the new observer if successfully observed, + * or the existing observer if the value already has one. + */ +function observe (value, asRootData) { + if (!isObject(value) || value instanceof VNode) { + return + } + var ob; + if (hasOwn(value, '__ob__') && value.__ob__ instanceof Observer) { + ob = value.__ob__; + } else if ( + shouldObserve && + !isServerRendering() && + (Array.isArray(value) || isPlainObject(value)) && + Object.isExtensible(value) && + !value._isVue + ) { + ob = new Observer(value); + } + if (asRootData && ob) { + ob.vmCount++; + } + return ob +} + +/** + * Define a reactive property on an Object. + */ +function defineReactive$$1 ( + obj, + key, + val, + customSetter, + shallow +) { + var dep = new Dep(); + + var property = Object.getOwnPropertyDescriptor(obj, key); + if (property && property.configurable === false) { + return + } + + // cater for pre-defined getter/setters + var getter = property && property.get; + var setter = property && property.set; + if ((!getter || setter) && arguments.length === 2) { + val = obj[key]; + } + + var childOb = !shallow && observe(val); + Object.defineProperty(obj, key, { + enumerable: true, + configurable: true, + get: function reactiveGetter () { + var value = getter ? getter.call(obj) : val; + if (Dep.target) { + dep.depend(); + if (childOb) { + childOb.dep.depend(); + if (Array.isArray(value)) { + dependArray(value); + } + } + } + return value + }, + set: function reactiveSetter (newVal) { + var value = getter ? getter.call(obj) : val; + /* eslint-disable no-self-compare */ + if (newVal === value || (newVal !== newVal && value !== value)) { + return + } + /* eslint-enable no-self-compare */ + if (customSetter) { + customSetter(); + } + // #7981: for accessor properties without setter + if (getter && !setter) { return } + if (setter) { + setter.call(obj, newVal); + } else { + val = newVal; + } + childOb = !shallow && observe(newVal); + dep.notify(); + } + }); +} + +/** + * Set a property on an object. Adds the new property and + * triggers change notification if the property doesn't + * already exist. + */ +function set (target, key, val) { + if (isUndef(target) || isPrimitive(target) + ) { + warn(("Cannot set reactive property on undefined, null, or primitive value: " + ((target)))); + } + if (Array.isArray(target) && isValidArrayIndex(key)) { + target.length = Math.max(target.length, key); + target.splice(key, 1, val); + return val + } + if (key in target && !(key in Object.prototype)) { + target[key] = val; + return val + } + var ob = (target).__ob__; + if (target._isVue || (ob && ob.vmCount)) { + warn( + 'Avoid adding reactive properties to a Vue instance or its root $data ' + + 'at runtime - declare it upfront in the data option.' + ); + return val + } + if (!ob) { + target[key] = val; + return val + } + defineReactive$$1(ob.value, key, val); + ob.dep.notify(); + return val +} + +/** + * Delete a property and trigger change if necessary. + */ +function del (target, key) { + if (isUndef(target) || isPrimitive(target) + ) { + warn(("Cannot delete reactive property on undefined, null, or primitive value: " + ((target)))); + } + if (Array.isArray(target) && isValidArrayIndex(key)) { + target.splice(key, 1); + return + } + var ob = (target).__ob__; + if (target._isVue || (ob && ob.vmCount)) { + warn( + 'Avoid deleting properties on a Vue instance or its root $data ' + + '- just set it to null.' + ); + return + } + if (!hasOwn(target, key)) { + return + } + delete target[key]; + if (!ob) { + return + } + ob.dep.notify(); +} + +/** + * Collect dependencies on array elements when the array is touched, since + * we cannot intercept array element access like property getters. + */ +function dependArray (value) { + for (var e = (void 0), i = 0, l = value.length; i < l; i++) { + e = value[i]; + e && e.__ob__ && e.__ob__.dep.depend(); + if (Array.isArray(e)) { + dependArray(e); + } + } +} + +/* */ + +/** + * Option overwriting strategies are functions that handle + * how to merge a parent option value and a child option + * value into the final value. + */ +var strats = config.optionMergeStrategies; + +/** + * Options with restrictions + */ +{ + strats.el = strats.propsData = function (parent, child, vm, key) { + if (!vm) { + warn( + "option \"" + key + "\" can only be used during instance " + + 'creation with the `new` keyword.' + ); + } + return defaultStrat(parent, child) + }; +} + +/** + * Helper that recursively merges two data objects together. + */ +function mergeData (to, from) { + if (!from) { return to } + var key, toVal, fromVal; + + var keys = hasSymbol + ? Reflect.ownKeys(from) + : Object.keys(from); + + for (var i = 0; i < keys.length; i++) { + key = keys[i]; + // in case the object is already observed... + if (key === '__ob__') { continue } + toVal = to[key]; + fromVal = from[key]; + if (!hasOwn(to, key)) { + set(to, key, fromVal); + } else if ( + toVal !== fromVal && + isPlainObject(toVal) && + isPlainObject(fromVal) + ) { + mergeData(toVal, fromVal); + } + } + return to +} + +/** + * Data + */ +function mergeDataOrFn ( + parentVal, + childVal, + vm +) { + if (!vm) { + // in a Vue.extend merge, both should be functions + if (!childVal) { + return parentVal + } + if (!parentVal) { + return childVal + } + // when parentVal & childVal are both present, + // we need to return a function that returns the + // merged result of both functions... no need to + // check if parentVal is a function here because + // it has to be a function to pass previous merges. + return function mergedDataFn () { + return mergeData( + typeof childVal === 'function' ? childVal.call(this, this) : childVal, + typeof parentVal === 'function' ? parentVal.call(this, this) : parentVal + ) + } + } else { + return function mergedInstanceDataFn () { + // instance merge + var instanceData = typeof childVal === 'function' + ? childVal.call(vm, vm) + : childVal; + var defaultData = typeof parentVal === 'function' + ? parentVal.call(vm, vm) + : parentVal; + if (instanceData) { + return mergeData(instanceData, defaultData) + } else { + return defaultData + } + } + } +} + +strats.data = function ( + parentVal, + childVal, + vm +) { + if (!vm) { + if (childVal && typeof childVal !== 'function') { + warn( + 'The "data" option should be a function ' + + 'that returns a per-instance value in component ' + + 'definitions.', + vm + ); + + return parentVal + } + return mergeDataOrFn(parentVal, childVal) + } + + return mergeDataOrFn(parentVal, childVal, vm) +}; + +/** + * Hooks and props are merged as arrays. + */ +function mergeHook ( + parentVal, + childVal +) { + var res = childVal + ? parentVal + ? parentVal.concat(childVal) + : Array.isArray(childVal) + ? childVal + : [childVal] + : parentVal; + return res + ? dedupeHooks(res) + : res +} + +function dedupeHooks (hooks) { + var res = []; + for (var i = 0; i < hooks.length; i++) { + if (res.indexOf(hooks[i]) === -1) { + res.push(hooks[i]); + } + } + return res +} + +LIFECYCLE_HOOKS.forEach(function (hook) { + strats[hook] = mergeHook; +}); + +/** + * Assets + * + * When a vm is present (instance creation), we need to do + * a three-way merge between constructor options, instance + * options and parent options. + */ +function mergeAssets ( + parentVal, + childVal, + vm, + key +) { + var res = Object.create(parentVal || null); + if (childVal) { + assertObjectType(key, childVal, vm); + return extend(res, childVal) + } else { + return res + } +} + +ASSET_TYPES.forEach(function (type) { + strats[type + 's'] = mergeAssets; +}); + +/** + * Watchers. + * + * Watchers hashes should not overwrite one + * another, so we merge them as arrays. + */ +strats.watch = function ( + parentVal, + childVal, + vm, + key +) { + // work around Firefox's Object.prototype.watch... + if (parentVal === nativeWatch) { parentVal = undefined; } + if (childVal === nativeWatch) { childVal = undefined; } + /* istanbul ignore if */ + if (!childVal) { return Object.create(parentVal || null) } + { + assertObjectType(key, childVal, vm); + } + if (!parentVal) { return childVal } + var ret = {}; + extend(ret, parentVal); + for (var key$1 in childVal) { + var parent = ret[key$1]; + var child = childVal[key$1]; + if (parent && !Array.isArray(parent)) { + parent = [parent]; + } + ret[key$1] = parent + ? parent.concat(child) + : Array.isArray(child) ? child : [child]; + } + return ret +}; + +/** + * Other object hashes. + */ +strats.props = +strats.methods = +strats.inject = +strats.computed = function ( + parentVal, + childVal, + vm, + key +) { + if (childVal && "development" !== 'production') { + assertObjectType(key, childVal, vm); + } + if (!parentVal) { return childVal } + var ret = Object.create(null); + extend(ret, parentVal); + if (childVal) { extend(ret, childVal); } + return ret +}; +strats.provide = mergeDataOrFn; + +/** + * Default strategy. + */ +var defaultStrat = function (parentVal, childVal) { + return childVal === undefined + ? parentVal + : childVal +}; + +/** + * Validate component names + */ +function checkComponents (options) { + for (var key in options.components) { + validateComponentName(key); + } +} + +function validateComponentName (name) { + if (!new RegExp(("^[a-zA-Z][\\-\\.0-9_" + (unicodeRegExp.source) + "]*$")).test(name)) { + warn( + 'Invalid component name: "' + name + '". Component names ' + + 'should conform to valid custom element name in html5 specification.' + ); + } + if (isBuiltInTag(name) || config.isReservedTag(name)) { + warn( + 'Do not use built-in or reserved HTML elements as component ' + + 'id: ' + name + ); + } +} + +/** + * Ensure all props option syntax are normalized into the + * Object-based format. + */ +function normalizeProps (options, vm) { + var props = options.props; + if (!props) { return } + var res = {}; + var i, val, name; + if (Array.isArray(props)) { + i = props.length; + while (i--) { + val = props[i]; + if (typeof val === 'string') { + name = camelize(val); + res[name] = { type: null }; + } else { + warn('props must be strings when using array syntax.'); + } + } + } else if (isPlainObject(props)) { + for (var key in props) { + val = props[key]; + name = camelize(key); + res[name] = isPlainObject(val) + ? val + : { type: val }; + } + } else { + warn( + "Invalid value for option \"props\": expected an Array or an Object, " + + "but got " + (toRawType(props)) + ".", + vm + ); + } + options.props = res; +} + +/** + * Normalize all injections into Object-based format + */ +function normalizeInject (options, vm) { + var inject = options.inject; + if (!inject) { return } + var normalized = options.inject = {}; + if (Array.isArray(inject)) { + for (var i = 0; i < inject.length; i++) { + normalized[inject[i]] = { from: inject[i] }; + } + } else if (isPlainObject(inject)) { + for (var key in inject) { + var val = inject[key]; + normalized[key] = isPlainObject(val) + ? extend({ from: key }, val) + : { from: val }; + } + } else { + warn( + "Invalid value for option \"inject\": expected an Array or an Object, " + + "but got " + (toRawType(inject)) + ".", + vm + ); + } +} + +/** + * Normalize raw function directives into object format. + */ +function normalizeDirectives (options) { + var dirs = options.directives; + if (dirs) { + for (var key in dirs) { + var def$$1 = dirs[key]; + if (typeof def$$1 === 'function') { + dirs[key] = { bind: def$$1, update: def$$1 }; + } + } + } +} + +function assertObjectType (name, value, vm) { + if (!isPlainObject(value)) { + warn( + "Invalid value for option \"" + name + "\": expected an Object, " + + "but got " + (toRawType(value)) + ".", + vm + ); + } +} + +/** + * Merge two option objects into a new one. + * Core utility used in both instantiation and inheritance. + */ +function mergeOptions ( + parent, + child, + vm +) { + { + checkComponents(child); + } + + if (typeof child === 'function') { + child = child.options; + } + + normalizeProps(child, vm); + normalizeInject(child, vm); + normalizeDirectives(child); + + // Apply extends and mixins on the child options, + // but only if it is a raw options object that isn't + // the result of another mergeOptions call. + // Only merged options has the _base property. + if (!child._base) { + if (child.extends) { + parent = mergeOptions(parent, child.extends, vm); + } + if (child.mixins) { + for (var i = 0, l = child.mixins.length; i < l; i++) { + parent = mergeOptions(parent, child.mixins[i], vm); + } + } + } + + var options = {}; + var key; + for (key in parent) { + mergeField(key); + } + for (key in child) { + if (!hasOwn(parent, key)) { + mergeField(key); + } + } + function mergeField (key) { + var strat = strats[key] || defaultStrat; + options[key] = strat(parent[key], child[key], vm, key); + } + return options +} + +/** + * Resolve an asset. + * This function is used because child instances need access + * to assets defined in its ancestor chain. + */ +function resolveAsset ( + options, + type, + id, + warnMissing +) { + /* istanbul ignore if */ + if (typeof id !== 'string') { + return + } + var assets = options[type]; + // check local registration variations first + if (hasOwn(assets, id)) { return assets[id] } + var camelizedId = camelize(id); + if (hasOwn(assets, camelizedId)) { return assets[camelizedId] } + var PascalCaseId = capitalize(camelizedId); + if (hasOwn(assets, PascalCaseId)) { return assets[PascalCaseId] } + // fallback to prototype chain + var res = assets[id] || assets[camelizedId] || assets[PascalCaseId]; + if (warnMissing && !res) { + warn( + 'Failed to resolve ' + type.slice(0, -1) + ': ' + id, + options + ); + } + return res +} + +/* */ + + + +function validateProp ( + key, + propOptions, + propsData, + vm +) { + var prop = propOptions[key]; + var absent = !hasOwn(propsData, key); + var value = propsData[key]; + // boolean casting + var booleanIndex = getTypeIndex(Boolean, prop.type); + if (booleanIndex > -1) { + if (absent && !hasOwn(prop, 'default')) { + value = false; + } else if (value === '' || value === hyphenate(key)) { + // only cast empty string / same name to boolean if + // boolean has higher priority + var stringIndex = getTypeIndex(String, prop.type); + if (stringIndex < 0 || booleanIndex < stringIndex) { + value = true; + } + } + } + // check default value + if (value === undefined) { + value = getPropDefaultValue(vm, prop, key); + // since the default value is a fresh copy, + // make sure to observe it. + var prevShouldObserve = shouldObserve; + toggleObserving(true); + observe(value); + toggleObserving(prevShouldObserve); + } + { + assertProp(prop, key, value, vm, absent); + } + return value +} + +/** + * Get the default value of a prop. + */ +function getPropDefaultValue (vm, prop, key) { + // no default, return undefined + if (!hasOwn(prop, 'default')) { + return undefined + } + var def = prop.default; + // warn against non-factory defaults for Object & Array + if (isObject(def)) { + warn( + 'Invalid default value for prop "' + key + '": ' + + 'Props with type Object/Array must use a factory function ' + + 'to return the default value.', + vm + ); + } + // the raw prop value was also undefined from previous render, + // return previous default value to avoid unnecessary watcher trigger + if (vm && vm.$options.propsData && + vm.$options.propsData[key] === undefined && + vm._props[key] !== undefined + ) { + return vm._props[key] + } + // call factory function for non-Function types + // a value is Function if its prototype is function even across different execution context + return typeof def === 'function' && getType(prop.type) !== 'Function' + ? def.call(vm) + : def +} + +/** + * Assert whether a prop is valid. + */ +function assertProp ( + prop, + name, + value, + vm, + absent +) { + if (prop.required && absent) { + warn( + 'Missing required prop: "' + name + '"', + vm + ); + return + } + if (value == null && !prop.required) { + return + } + var type = prop.type; + var valid = !type || type === true; + var expectedTypes = []; + if (type) { + if (!Array.isArray(type)) { + type = [type]; + } + for (var i = 0; i < type.length && !valid; i++) { + var assertedType = assertType(value, type[i]); + expectedTypes.push(assertedType.expectedType || ''); + valid = assertedType.valid; + } + } + + if (!valid) { + warn( + getInvalidTypeMessage(name, value, expectedTypes), + vm + ); + return + } + var validator = prop.validator; + if (validator) { + if (!validator(value)) { + warn( + 'Invalid prop: custom validator check failed for prop "' + name + '".', + vm + ); + } + } +} + +var simpleCheckRE = /^(String|Number|Boolean|Function|Symbol)$/; + +function assertType (value, type) { + var valid; + var expectedType = getType(type); + if (simpleCheckRE.test(expectedType)) { + var t = typeof value; + valid = t === expectedType.toLowerCase(); + // for primitive wrapper objects + if (!valid && t === 'object') { + valid = value instanceof type; + } + } else if (expectedType === 'Object') { + valid = isPlainObject(value); + } else if (expectedType === 'Array') { + valid = Array.isArray(value); + } else { + valid = value instanceof type; + } + return { + valid: valid, + expectedType: expectedType + } +} + +/** + * Use function string name to check built-in types, + * because a simple equality check will fail when running + * across different vms / iframes. + */ +function getType (fn) { + var match = fn && fn.toString().match(/^\s*function (\w+)/); + return match ? match[1] : '' +} + +function isSameType (a, b) { + return getType(a) === getType(b) +} + +function getTypeIndex (type, expectedTypes) { + if (!Array.isArray(expectedTypes)) { + return isSameType(expectedTypes, type) ? 0 : -1 + } + for (var i = 0, len = expectedTypes.length; i < len; i++) { + if (isSameType(expectedTypes[i], type)) { + return i + } + } + return -1 +} + +function getInvalidTypeMessage (name, value, expectedTypes) { + var message = "Invalid prop: type check failed for prop \"" + name + "\"." + + " Expected " + (expectedTypes.map(capitalize).join(', ')); + var expectedType = expectedTypes[0]; + var receivedType = toRawType(value); + var expectedValue = styleValue(value, expectedType); + var receivedValue = styleValue(value, receivedType); + // check if we need to specify expected value + if (expectedTypes.length === 1 && + isExplicable(expectedType) && + !isBoolean(expectedType, receivedType)) { + message += " with value " + expectedValue; + } + message += ", got " + receivedType + " "; + // check if we need to specify received value + if (isExplicable(receivedType)) { + message += "with value " + receivedValue + "."; + } + return message +} + +function styleValue (value, type) { + if (type === 'String') { + return ("\"" + value + "\"") + } else if (type === 'Number') { + return ("" + (Number(value))) + } else { + return ("" + value) + } +} + +function isExplicable (value) { + var explicitTypes = ['string', 'number', 'boolean']; + return explicitTypes.some(function (elem) { return value.toLowerCase() === elem; }) +} + +function isBoolean () { + var args = [], len = arguments.length; + while ( len-- ) args[ len ] = arguments[ len ]; + + return args.some(function (elem) { return elem.toLowerCase() === 'boolean'; }) +} + +/* */ + +function handleError (err, vm, info) { + // Deactivate deps tracking while processing error handler to avoid possible infinite rendering. + // See: https://github.com/vuejs/vuex/issues/1505 + pushTarget(); + try { + if (vm) { + var cur = vm; + while ((cur = cur.$parent)) { + var hooks = cur.$options.errorCaptured; + if (hooks) { + for (var i = 0; i < hooks.length; i++) { + try { + var capture = hooks[i].call(cur, err, vm, info) === false; + if (capture) { return } + } catch (e) { + globalHandleError(e, cur, 'errorCaptured hook'); + } + } + } + } + } + globalHandleError(err, vm, info); + } finally { + popTarget(); + } +} + +function invokeWithErrorHandling ( + handler, + context, + args, + vm, + info +) { + var res; + try { + res = args ? handler.apply(context, args) : handler.call(context); + if (res && !res._isVue && isPromise(res) && !res._handled) { + res.catch(function (e) { return handleError(e, vm, info + " (Promise/async)"); }); + // issue #9511 + // avoid catch triggering multiple times when nested calls + res._handled = true; + } + } catch (e) { + handleError(e, vm, info); + } + return res +} + +function globalHandleError (err, vm, info) { + if (config.errorHandler) { + try { + return config.errorHandler.call(null, err, vm, info) + } catch (e) { + // if the user intentionally throws the original error in the handler, + // do not log it twice + if (e !== err) { + logError(e, null, 'config.errorHandler'); + } + } + } + logError(err, vm, info); +} + +function logError (err, vm, info) { + { + warn(("Error in " + info + ": \"" + (err.toString()) + "\""), vm); + } + /* istanbul ignore else */ + if ((inBrowser || inWeex) && typeof console !== 'undefined') { + console.error(err); + } else { + throw err + } +} + +/* */ + +var isUsingMicroTask = false; + +var callbacks = []; +var pending = false; + +function flushCallbacks () { + pending = false; + var copies = callbacks.slice(0); + callbacks.length = 0; + for (var i = 0; i < copies.length; i++) { + copies[i](); + } +} + +// Here we have async deferring wrappers using microtasks. +// In 2.5 we used (macro) tasks (in combination with microtasks). +// However, it has subtle problems when state is changed right before repaint +// (e.g. #6813, out-in transitions). +// Also, using (macro) tasks in event handler would cause some weird behaviors +// that cannot be circumvented (e.g. #7109, #7153, #7546, #7834, #8109). +// So we now use microtasks everywhere, again. +// A major drawback of this tradeoff is that there are some scenarios +// where microtasks have too high a priority and fire in between supposedly +// sequential events (e.g. #4521, #6690, which have workarounds) +// or even between bubbling of the same event (#6566). +var timerFunc; + +// The nextTick behavior leverages the microtask queue, which can be accessed +// via either native Promise.then or MutationObserver. +// MutationObserver has wider support, however it is seriously bugged in +// UIWebView in iOS >= 9.3.3 when triggered in touch event handlers. It +// completely stops working after triggering a few times... so, if native +// Promise is available, we will use it: +/* istanbul ignore next, $flow-disable-line */ +if (typeof Promise !== 'undefined' && isNative(Promise)) { + var p = Promise.resolve(); + timerFunc = function () { + p.then(flushCallbacks); + // In problematic UIWebViews, Promise.then doesn't completely break, but + // it can get stuck in a weird state where callbacks are pushed into the + // microtask queue but the queue isn't being flushed, until the browser + // needs to do some other work, e.g. handle a timer. Therefore we can + // "force" the microtask queue to be flushed by adding an empty timer. + if (isIOS) { setTimeout(noop); } + }; + isUsingMicroTask = true; +} else if (!isIE && typeof MutationObserver !== 'undefined' && ( + isNative(MutationObserver) || + // PhantomJS and iOS 7.x + MutationObserver.toString() === '[object MutationObserverConstructor]' +)) { + // Use MutationObserver where native Promise is not available, + // e.g. PhantomJS, iOS7, Android 4.4 + // (#6466 MutationObserver is unreliable in IE11) + var counter = 1; + var observer = new MutationObserver(flushCallbacks); + var textNode = document.createTextNode(String(counter)); + observer.observe(textNode, { + characterData: true + }); + timerFunc = function () { + counter = (counter + 1) % 2; + textNode.data = String(counter); + }; + isUsingMicroTask = true; +} else if (typeof setImmediate !== 'undefined' && isNative(setImmediate)) { + // Fallback to setImmediate. + // Techinically it leverages the (macro) task queue, + // but it is still a better choice than setTimeout. + timerFunc = function () { + setImmediate(flushCallbacks); + }; +} else { + // Fallback to setTimeout. + timerFunc = function () { + setTimeout(flushCallbacks, 0); + }; +} + +function nextTick (cb, ctx) { + var _resolve; + callbacks.push(function () { + if (cb) { + try { + cb.call(ctx); + } catch (e) { + handleError(e, ctx, 'nextTick'); + } + } else if (_resolve) { + _resolve(ctx); + } + }); + if (!pending) { + pending = true; + timerFunc(); + } + // $flow-disable-line + if (!cb && typeof Promise !== 'undefined') { + return new Promise(function (resolve) { + _resolve = resolve; + }) + } +} + +/* */ + +var mark; +var measure; + +{ + var perf = inBrowser && window.performance; + /* istanbul ignore if */ + if ( + perf && + perf.mark && + perf.measure && + perf.clearMarks && + perf.clearMeasures + ) { + mark = function (tag) { return perf.mark(tag); }; + measure = function (name, startTag, endTag) { + perf.measure(name, startTag, endTag); + perf.clearMarks(startTag); + perf.clearMarks(endTag); + // perf.clearMeasures(name) + }; + } +} + +/* not type checking this file because flow doesn't play well with Proxy */ + +var initProxy; + +{ + var allowedGlobals = makeMap( + 'Infinity,undefined,NaN,isFinite,isNaN,' + + 'parseFloat,parseInt,decodeURI,decodeURIComponent,encodeURI,encodeURIComponent,' + + 'Math,Number,Date,Array,Object,Boolean,String,RegExp,Map,Set,JSON,Intl,' + + 'require' // for Webpack/Browserify + ); + + var warnNonPresent = function (target, key) { + warn( + "Property or method \"" + key + "\" is not defined on the instance but " + + 'referenced during render. Make sure that this property is reactive, ' + + 'either in the data option, or for class-based components, by ' + + 'initializing the property. ' + + 'See: https://vuejs.org/v2/guide/reactivity.html#Declaring-Reactive-Properties.', + target + ); + }; + + var warnReservedPrefix = function (target, key) { + warn( + "Property \"" + key + "\" must be accessed with \"$data." + key + "\" because " + + 'properties starting with "$" or "_" are not proxied in the Vue instance to ' + + 'prevent conflicts with Vue internals' + + 'See: https://vuejs.org/v2/api/#data', + target + ); + }; + + var hasProxy = + typeof Proxy !== 'undefined' && isNative(Proxy); + + if (hasProxy) { + var isBuiltInModifier = makeMap('stop,prevent,self,ctrl,shift,alt,meta,exact'); + config.keyCodes = new Proxy(config.keyCodes, { + set: function set (target, key, value) { + if (isBuiltInModifier(key)) { + warn(("Avoid overwriting built-in modifier in config.keyCodes: ." + key)); + return false + } else { + target[key] = value; + return true + } + } + }); + } + + var hasHandler = { + has: function has (target, key) { + var has = key in target; + var isAllowed = allowedGlobals(key) || + (typeof key === 'string' && key.charAt(0) === '_' && !(key in target.$data)); + if (!has && !isAllowed) { + if (key in target.$data) { warnReservedPrefix(target, key); } + else { warnNonPresent(target, key); } + } + return has || !isAllowed + } + }; + + var getHandler = { + get: function get (target, key) { + if (typeof key === 'string' && !(key in target)) { + if (key in target.$data) { warnReservedPrefix(target, key); } + else { warnNonPresent(target, key); } + } + return target[key] + } + }; + + initProxy = function initProxy (vm) { + if (hasProxy) { + // determine which proxy handler to use + var options = vm.$options; + var handlers = options.render && options.render._withStripped + ? getHandler + : hasHandler; + vm._renderProxy = new Proxy(vm, handlers); + } else { + vm._renderProxy = vm; + } + }; +} + +/* */ + +var seenObjects = new _Set(); + +/** + * Recursively traverse an object to evoke all converted + * getters, so that every nested property inside the object + * is collected as a "deep" dependency. + */ +function traverse (val) { + _traverse(val, seenObjects); + seenObjects.clear(); +} + +function _traverse (val, seen) { + var i, keys; + var isA = Array.isArray(val); + if ((!isA && !isObject(val)) || Object.isFrozen(val) || val instanceof VNode) { + return + } + if (val.__ob__) { + var depId = val.__ob__.dep.id; + if (seen.has(depId)) { + return + } + seen.add(depId); + } + if (isA) { + i = val.length; + while (i--) { _traverse(val[i], seen); } + } else { + keys = Object.keys(val); + i = keys.length; + while (i--) { _traverse(val[keys[i]], seen); } + } +} + +/* */ + +var normalizeEvent = cached(function (name) { + var passive = name.charAt(0) === '&'; + name = passive ? name.slice(1) : name; + var once$$1 = name.charAt(0) === '~'; // Prefixed last, checked first + name = once$$1 ? name.slice(1) : name; + var capture = name.charAt(0) === '!'; + name = capture ? name.slice(1) : name; + return { + name: name, + once: once$$1, + capture: capture, + passive: passive + } +}); + +function createFnInvoker (fns, vm) { + function invoker () { + var arguments$1 = arguments; + + var fns = invoker.fns; + if (Array.isArray(fns)) { + var cloned = fns.slice(); + for (var i = 0; i < cloned.length; i++) { + invokeWithErrorHandling(cloned[i], null, arguments$1, vm, "v-on handler"); + } + } else { + // return handler return value for single handlers + return invokeWithErrorHandling(fns, null, arguments, vm, "v-on handler") + } + } + invoker.fns = fns; + return invoker +} + +function updateListeners ( + on, + oldOn, + add, + remove$$1, + createOnceHandler, + vm +) { + var name, def$$1, cur, old, event; + for (name in on) { + def$$1 = cur = on[name]; + old = oldOn[name]; + event = normalizeEvent(name); + if (isUndef(cur)) { + warn( + "Invalid handler for event \"" + (event.name) + "\": got " + String(cur), + vm + ); + } else if (isUndef(old)) { + if (isUndef(cur.fns)) { + cur = on[name] = createFnInvoker(cur, vm); + } + if (isTrue(event.once)) { + cur = on[name] = createOnceHandler(event.name, cur, event.capture); + } + add(event.name, cur, event.capture, event.passive, event.params); + } else if (cur !== old) { + old.fns = cur; + on[name] = old; + } + } + for (name in oldOn) { + if (isUndef(on[name])) { + event = normalizeEvent(name); + remove$$1(event.name, oldOn[name], event.capture); + } + } +} + +/* */ + +function mergeVNodeHook (def, hookKey, hook) { + if (def instanceof VNode) { + def = def.data.hook || (def.data.hook = {}); + } + var invoker; + var oldHook = def[hookKey]; + + function wrappedHook () { + hook.apply(this, arguments); + // important: remove merged hook to ensure it's called only once + // and prevent memory leak + remove(invoker.fns, wrappedHook); + } + + if (isUndef(oldHook)) { + // no existing hook + invoker = createFnInvoker([wrappedHook]); + } else { + /* istanbul ignore if */ + if (isDef(oldHook.fns) && isTrue(oldHook.merged)) { + // already a merged invoker + invoker = oldHook; + invoker.fns.push(wrappedHook); + } else { + // existing plain hook + invoker = createFnInvoker([oldHook, wrappedHook]); + } + } + + invoker.merged = true; + def[hookKey] = invoker; +} + +/* */ + +function extractPropsFromVNodeData ( + data, + Ctor, + tag +) { + // we are only extracting raw values here. + // validation and default values are handled in the child + // component itself. + var propOptions = Ctor.options.props; + if (isUndef(propOptions)) { + return + } + var res = {}; + var attrs = data.attrs; + var props = data.props; + if (isDef(attrs) || isDef(props)) { + for (var key in propOptions) { + var altKey = hyphenate(key); + { + var keyInLowerCase = key.toLowerCase(); + if ( + key !== keyInLowerCase && + attrs && hasOwn(attrs, keyInLowerCase) + ) { + tip( + "Prop \"" + keyInLowerCase + "\" is passed to component " + + (formatComponentName(tag || Ctor)) + ", but the declared prop name is" + + " \"" + key + "\". " + + "Note that HTML attributes are case-insensitive and camelCased " + + "props need to use their kebab-case equivalents when using in-DOM " + + "templates. You should probably use \"" + altKey + "\" instead of \"" + key + "\"." + ); + } + } + checkProp(res, props, key, altKey, true) || + checkProp(res, attrs, key, altKey, false); + } + } + return res +} + +function checkProp ( + res, + hash, + key, + altKey, + preserve +) { + if (isDef(hash)) { + if (hasOwn(hash, key)) { + res[key] = hash[key]; + if (!preserve) { + delete hash[key]; + } + return true + } else if (hasOwn(hash, altKey)) { + res[key] = hash[altKey]; + if (!preserve) { + delete hash[altKey]; + } + return true + } + } + return false +} + +/* */ + +// The template compiler attempts to minimize the need for normalization by +// statically analyzing the template at compile time. +// +// For plain HTML markup, normalization can be completely skipped because the +// generated render function is guaranteed to return Array<VNode>. There are +// two cases where extra normalization is needed: + +// 1. When the children contains components - because a functional component +// may return an Array instead of a single root. In this case, just a simple +// normalization is needed - if any child is an Array, we flatten the whole +// thing with Array.prototype.concat. It is guaranteed to be only 1-level deep +// because functional components already normalize their own children. +function simpleNormalizeChildren (children) { + for (var i = 0; i < children.length; i++) { + if (Array.isArray(children[i])) { + return Array.prototype.concat.apply([], children) + } + } + return children +} + +// 2. When the children contains constructs that always generated nested Arrays, +// e.g. <template>, <slot>, v-for, or when the children is provided by user +// with hand-written render functions / JSX. In such cases a full normalization +// is needed to cater to all possible types of children values. +function normalizeChildren (children) { + return isPrimitive(children) + ? [createTextVNode(children)] + : Array.isArray(children) + ? normalizeArrayChildren(children) + : undefined +} + +function isTextNode (node) { + return isDef(node) && isDef(node.text) && isFalse(node.isComment) +} + +function normalizeArrayChildren (children, nestedIndex) { + var res = []; + var i, c, lastIndex, last; + for (i = 0; i < children.length; i++) { + c = children[i]; + if (isUndef(c) || typeof c === 'boolean') { continue } + lastIndex = res.length - 1; + last = res[lastIndex]; + // nested + if (Array.isArray(c)) { + if (c.length > 0) { + c = normalizeArrayChildren(c, ((nestedIndex || '') + "_" + i)); + // merge adjacent text nodes + if (isTextNode(c[0]) && isTextNode(last)) { + res[lastIndex] = createTextVNode(last.text + (c[0]).text); + c.shift(); + } + res.push.apply(res, c); + } + } else if (isPrimitive(c)) { + if (isTextNode(last)) { + // merge adjacent text nodes + // this is necessary for SSR hydration because text nodes are + // essentially merged when rendered to HTML strings + res[lastIndex] = createTextVNode(last.text + c); + } else if (c !== '') { + // convert primitive to vnode + res.push(createTextVNode(c)); + } + } else { + if (isTextNode(c) && isTextNode(last)) { + // merge adjacent text nodes + res[lastIndex] = createTextVNode(last.text + c.text); + } else { + // default key for nested array children (likely generated by v-for) + if (isTrue(children._isVList) && + isDef(c.tag) && + isUndef(c.key) && + isDef(nestedIndex)) { + c.key = "__vlist" + nestedIndex + "_" + i + "__"; + } + res.push(c); + } + } + } + return res +} + +/* */ + +function initProvide (vm) { + var provide = vm.$options.provide; + if (provide) { + vm._provided = typeof provide === 'function' + ? provide.call(vm) + : provide; + } +} + +function initInjections (vm) { + var result = resolveInject(vm.$options.inject, vm); + if (result) { + toggleObserving(false); + Object.keys(result).forEach(function (key) { + /* istanbul ignore else */ + { + defineReactive$$1(vm, key, result[key], function () { + warn( + "Avoid mutating an injected value directly since the changes will be " + + "overwritten whenever the provided component re-renders. " + + "injection being mutated: \"" + key + "\"", + vm + ); + }); + } + }); + toggleObserving(true); + } +} + +function resolveInject (inject, vm) { + if (inject) { + // inject is :any because flow is not smart enough to figure out cached + var result = Object.create(null); + var keys = hasSymbol + ? Reflect.ownKeys(inject) + : Object.keys(inject); + + for (var i = 0; i < keys.length; i++) { + var key = keys[i]; + // #6574 in case the inject object is observed... + if (key === '__ob__') { continue } + var provideKey = inject[key].from; + var source = vm; + while (source) { + if (source._provided && hasOwn(source._provided, provideKey)) { + result[key] = source._provided[provideKey]; + break + } + source = source.$parent; + } + if (!source) { + if ('default' in inject[key]) { + var provideDefault = inject[key].default; + result[key] = typeof provideDefault === 'function' + ? provideDefault.call(vm) + : provideDefault; + } else { + warn(("Injection \"" + key + "\" not found"), vm); + } + } + } + return result + } +} + +/* */ + + + +/** + * Runtime helper for resolving raw children VNodes into a slot object. + */ +function resolveSlots ( + children, + context +) { + if (!children || !children.length) { + return {} + } + var slots = {}; + for (var i = 0, l = children.length; i < l; i++) { + var child = children[i]; + var data = child.data; + // remove slot attribute if the node is resolved as a Vue slot node + if (data && data.attrs && data.attrs.slot) { + delete data.attrs.slot; + } + // named slots should only be respected if the vnode was rendered in the + // same context. + if ((child.context === context || child.fnContext === context) && + data && data.slot != null + ) { + var name = data.slot; + var slot = (slots[name] || (slots[name] = [])); + if (child.tag === 'template') { + slot.push.apply(slot, child.children || []); + } else { + slot.push(child); + } + } else { + (slots.default || (slots.default = [])).push(child); + } + } + // ignore slots that contains only whitespace + for (var name$1 in slots) { + if (slots[name$1].every(isWhitespace)) { + delete slots[name$1]; + } + } + return slots +} + +function isWhitespace (node) { + return (node.isComment && !node.asyncFactory) || node.text === ' ' +} + +/* */ + +function normalizeScopedSlots ( + slots, + normalSlots, + prevSlots +) { + var res; + var hasNormalSlots = Object.keys(normalSlots).length > 0; + var isStable = slots ? !!slots.$stable : !hasNormalSlots; + var key = slots && slots.$key; + if (!slots) { + res = {}; + } else if (slots._normalized) { + // fast path 1: child component re-render only, parent did not change + return slots._normalized + } else if ( + isStable && + prevSlots && + prevSlots !== emptyObject && + key === prevSlots.$key && + !hasNormalSlots && + !prevSlots.$hasNormal + ) { + // fast path 2: stable scoped slots w/ no normal slots to proxy, + // only need to normalize once + return prevSlots + } else { + res = {}; + for (var key$1 in slots) { + if (slots[key$1] && key$1[0] !== '$') { + res[key$1] = normalizeScopedSlot(normalSlots, key$1, slots[key$1]); + } + } + } + // expose normal slots on scopedSlots + for (var key$2 in normalSlots) { + if (!(key$2 in res)) { + res[key$2] = proxyNormalSlot(normalSlots, key$2); + } + } + // avoriaz seems to mock a non-extensible $scopedSlots object + // and when that is passed down this would cause an error + if (slots && Object.isExtensible(slots)) { + (slots)._normalized = res; + } + def(res, '$stable', isStable); + def(res, '$key', key); + def(res, '$hasNormal', hasNormalSlots); + return res +} + +function normalizeScopedSlot(normalSlots, key, fn) { + var normalized = function () { + var res = arguments.length ? fn.apply(null, arguments) : fn({}); + res = res && typeof res === 'object' && !Array.isArray(res) + ? [res] // single vnode + : normalizeChildren(res); + return res && ( + res.length === 0 || + (res.length === 1 && res[0].isComment) // #9658 + ) ? undefined + : res + }; + // this is a slot using the new v-slot syntax without scope. although it is + // compiled as a scoped slot, render fn users would expect it to be present + // on this.$slots because the usage is semantically a normal slot. + if (fn.proxy) { + Object.defineProperty(normalSlots, key, { + get: normalized, + enumerable: true, + configurable: true + }); + } + return normalized +} + +function proxyNormalSlot(slots, key) { + return function () { return slots[key]; } +} + +/* */ + +/** + * Runtime helper for rendering v-for lists. + */ +function renderList ( + val, + render +) { + var ret, i, l, keys, key; + if (Array.isArray(val) || typeof val === 'string') { + ret = new Array(val.length); + for (i = 0, l = val.length; i < l; i++) { + ret[i] = render(val[i], i); + } + } else if (typeof val === 'number') { + ret = new Array(val); + for (i = 0; i < val; i++) { + ret[i] = render(i + 1, i); + } + } else if (isObject(val)) { + if (hasSymbol && val[Symbol.iterator]) { + ret = []; + var iterator = val[Symbol.iterator](); + var result = iterator.next(); + while (!result.done) { + ret.push(render(result.value, ret.length)); + result = iterator.next(); + } + } else { + keys = Object.keys(val); + ret = new Array(keys.length); + for (i = 0, l = keys.length; i < l; i++) { + key = keys[i]; + ret[i] = render(val[key], key, i); + } + } + } + if (!isDef(ret)) { + ret = []; + } + (ret)._isVList = true; + return ret +} + +/* */ + +/** + * Runtime helper for rendering <slot> + */ +function renderSlot ( + name, + fallback, + props, + bindObject +) { + var scopedSlotFn = this.$scopedSlots[name]; + var nodes; + if (scopedSlotFn) { // scoped slot + props = props || {}; + if (bindObject) { + if (!isObject(bindObject)) { + warn( + 'slot v-bind without argument expects an Object', + this + ); + } + props = extend(extend({}, bindObject), props); + } + nodes = scopedSlotFn(props) || fallback; + } else { + nodes = this.$slots[name] || fallback; + } + + var target = props && props.slot; + if (target) { + return this.$createElement('template', { slot: target }, nodes) + } else { + return nodes + } +} + +/* */ + +/** + * Runtime helper for resolving filters + */ +function resolveFilter (id) { + return resolveAsset(this.$options, 'filters', id, true) || identity +} + +/* */ + +function isKeyNotMatch (expect, actual) { + if (Array.isArray(expect)) { + return expect.indexOf(actual) === -1 + } else { + return expect !== actual + } +} + +/** + * Runtime helper for checking keyCodes from config. + * exposed as Vue.prototype._k + * passing in eventKeyName as last argument separately for backwards compat + */ +function checkKeyCodes ( + eventKeyCode, + key, + builtInKeyCode, + eventKeyName, + builtInKeyName +) { + var mappedKeyCode = config.keyCodes[key] || builtInKeyCode; + if (builtInKeyName && eventKeyName && !config.keyCodes[key]) { + return isKeyNotMatch(builtInKeyName, eventKeyName) + } else if (mappedKeyCode) { + return isKeyNotMatch(mappedKeyCode, eventKeyCode) + } else if (eventKeyName) { + return hyphenate(eventKeyName) !== key + } +} + +/* */ + +/** + * Runtime helper for merging v-bind="object" into a VNode's data. + */ +function bindObjectProps ( + data, + tag, + value, + asProp, + isSync +) { + if (value) { + if (!isObject(value)) { + warn( + 'v-bind without argument expects an Object or Array value', + this + ); + } else { + if (Array.isArray(value)) { + value = toObject(value); + } + var hash; + var loop = function ( key ) { + if ( + key === 'class' || + key === 'style' || + isReservedAttribute(key) + ) { + hash = data; + } else { + var type = data.attrs && data.attrs.type; + hash = asProp || config.mustUseProp(tag, type, key) + ? data.domProps || (data.domProps = {}) + : data.attrs || (data.attrs = {}); + } + var camelizedKey = camelize(key); + var hyphenatedKey = hyphenate(key); + if (!(camelizedKey in hash) && !(hyphenatedKey in hash)) { + hash[key] = value[key]; + + if (isSync) { + var on = data.on || (data.on = {}); + on[("update:" + key)] = function ($event) { + value[key] = $event; + }; + } + } + }; + + for (var key in value) loop( key ); + } + } + return data +} + +/* */ + +/** + * Runtime helper for rendering static trees. + */ +function renderStatic ( + index, + isInFor +) { + var cached = this._staticTrees || (this._staticTrees = []); + var tree = cached[index]; + // if has already-rendered static tree and not inside v-for, + // we can reuse the same tree. + if (tree && !isInFor) { + return tree + } + // otherwise, render a fresh tree. + tree = cached[index] = this.$options.staticRenderFns[index].call( + this._renderProxy, + null, + this // for render fns generated for functional component templates + ); + markStatic(tree, ("__static__" + index), false); + return tree +} + +/** + * Runtime helper for v-once. + * Effectively it means marking the node as static with a unique key. + */ +function markOnce ( + tree, + index, + key +) { + markStatic(tree, ("__once__" + index + (key ? ("_" + key) : "")), true); + return tree +} + +function markStatic ( + tree, + key, + isOnce +) { + if (Array.isArray(tree)) { + for (var i = 0; i < tree.length; i++) { + if (tree[i] && typeof tree[i] !== 'string') { + markStaticNode(tree[i], (key + "_" + i), isOnce); + } + } + } else { + markStaticNode(tree, key, isOnce); + } +} + +function markStaticNode (node, key, isOnce) { + node.isStatic = true; + node.key = key; + node.isOnce = isOnce; +} + +/* */ + +function bindObjectListeners (data, value) { + if (value) { + if (!isPlainObject(value)) { + warn( + 'v-on without argument expects an Object value', + this + ); + } else { + var on = data.on = data.on ? extend({}, data.on) : {}; + for (var key in value) { + var existing = on[key]; + var ours = value[key]; + on[key] = existing ? [].concat(existing, ours) : ours; + } + } + } + return data +} + +/* */ + +function resolveScopedSlots ( + fns, // see flow/vnode + res, + // the following are added in 2.6 + hasDynamicKeys, + contentHashKey +) { + res = res || { $stable: !hasDynamicKeys }; + for (var i = 0; i < fns.length; i++) { + var slot = fns[i]; + if (Array.isArray(slot)) { + resolveScopedSlots(slot, res, hasDynamicKeys); + } else if (slot) { + // marker for reverse proxying v-slot without scope on this.$slots + if (slot.proxy) { + slot.fn.proxy = true; + } + res[slot.key] = slot.fn; + } + } + if (contentHashKey) { + (res).$key = contentHashKey; + } + return res +} + +/* */ + +function bindDynamicKeys (baseObj, values) { + for (var i = 0; i < values.length; i += 2) { + var key = values[i]; + if (typeof key === 'string' && key) { + baseObj[values[i]] = values[i + 1]; + } else if (key !== '' && key !== null) { + // null is a speical value for explicitly removing a binding + warn( + ("Invalid value for dynamic directive argument (expected string or null): " + key), + this + ); + } + } + return baseObj +} + +// helper to dynamically append modifier runtime markers to event names. +// ensure only append when value is already string, otherwise it will be cast +// to string and cause the type check to miss. +function prependModifier (value, symbol) { + return typeof value === 'string' ? symbol + value : value +} + +/* */ + +function installRenderHelpers (target) { + target._o = markOnce; + target._n = toNumber; + target._s = toString; + target._l = renderList; + target._t = renderSlot; + target._q = looseEqual; + target._i = looseIndexOf; + target._m = renderStatic; + target._f = resolveFilter; + target._k = checkKeyCodes; + target._b = bindObjectProps; + target._v = createTextVNode; + target._e = createEmptyVNode; + target._u = resolveScopedSlots; + target._g = bindObjectListeners; + target._d = bindDynamicKeys; + target._p = prependModifier; +} + +/* */ + +function FunctionalRenderContext ( + data, + props, + children, + parent, + Ctor +) { + var this$1 = this; + + var options = Ctor.options; + // ensure the createElement function in functional components + // gets a unique context - this is necessary for correct named slot check + var contextVm; + if (hasOwn(parent, '_uid')) { + contextVm = Object.create(parent); + // $flow-disable-line + contextVm._original = parent; + } else { + // the context vm passed in is a functional context as well. + // in this case we want to make sure we are able to get a hold to the + // real context instance. + contextVm = parent; + // $flow-disable-line + parent = parent._original; + } + var isCompiled = isTrue(options._compiled); + var needNormalization = !isCompiled; + + this.data = data; + this.props = props; + this.children = children; + this.parent = parent; + this.listeners = data.on || emptyObject; + this.injections = resolveInject(options.inject, parent); + this.slots = function () { + if (!this$1.$slots) { + normalizeScopedSlots( + data.scopedSlots, + this$1.$slots = resolveSlots(children, parent) + ); + } + return this$1.$slots + }; + + Object.defineProperty(this, 'scopedSlots', ({ + enumerable: true, + get: function get () { + return normalizeScopedSlots(data.scopedSlots, this.slots()) + } + })); + + // support for compiled functional template + if (isCompiled) { + // exposing $options for renderStatic() + this.$options = options; + // pre-resolve slots for renderSlot() + this.$slots = this.slots(); + this.$scopedSlots = normalizeScopedSlots(data.scopedSlots, this.$slots); + } + + if (options._scopeId) { + this._c = function (a, b, c, d) { + var vnode = createElement(contextVm, a, b, c, d, needNormalization); + if (vnode && !Array.isArray(vnode)) { + vnode.fnScopeId = options._scopeId; + vnode.fnContext = parent; + } + return vnode + }; + } else { + this._c = function (a, b, c, d) { return createElement(contextVm, a, b, c, d, needNormalization); }; + } +} + +installRenderHelpers(FunctionalRenderContext.prototype); + +function createFunctionalComponent ( + Ctor, + propsData, + data, + contextVm, + children +) { + var options = Ctor.options; + var props = {}; + var propOptions = options.props; + if (isDef(propOptions)) { + for (var key in propOptions) { + props[key] = validateProp(key, propOptions, propsData || emptyObject); + } + } else { + if (isDef(data.attrs)) { mergeProps(props, data.attrs); } + if (isDef(data.props)) { mergeProps(props, data.props); } + } + + var renderContext = new FunctionalRenderContext( + data, + props, + children, + contextVm, + Ctor + ); + + var vnode = options.render.call(null, renderContext._c, renderContext); + + if (vnode instanceof VNode) { + return cloneAndMarkFunctionalResult(vnode, data, renderContext.parent, options, renderContext) + } else if (Array.isArray(vnode)) { + var vnodes = normalizeChildren(vnode) || []; + var res = new Array(vnodes.length); + for (var i = 0; i < vnodes.length; i++) { + res[i] = cloneAndMarkFunctionalResult(vnodes[i], data, renderContext.parent, options, renderContext); + } + return res + } +} + +function cloneAndMarkFunctionalResult (vnode, data, contextVm, options, renderContext) { + // #7817 clone node before setting fnContext, otherwise if the node is reused + // (e.g. it was from a cached normal slot) the fnContext causes named slots + // that should not be matched to match. + var clone = cloneVNode(vnode); + clone.fnContext = contextVm; + clone.fnOptions = options; + { + (clone.devtoolsMeta = clone.devtoolsMeta || {}).renderContext = renderContext; + } + if (data.slot) { + (clone.data || (clone.data = {})).slot = data.slot; + } + return clone +} + +function mergeProps (to, from) { + for (var key in from) { + to[camelize(key)] = from[key]; + } +} + +/* */ + +/* */ + +/* */ + +/* */ + +// inline hooks to be invoked on component VNodes during patch +var componentVNodeHooks = { + init: function init (vnode, hydrating) { + if ( + vnode.componentInstance && + !vnode.componentInstance._isDestroyed && + vnode.data.keepAlive + ) { + // kept-alive components, treat as a patch + var mountedNode = vnode; // work around flow + componentVNodeHooks.prepatch(mountedNode, mountedNode); + } else { + var child = vnode.componentInstance = createComponentInstanceForVnode( + vnode, + activeInstance + ); + child.$mount(hydrating ? vnode.elm : undefined, hydrating); + } + }, + + prepatch: function prepatch (oldVnode, vnode) { + var options = vnode.componentOptions; + var child = vnode.componentInstance = oldVnode.componentInstance; + updateChildComponent( + child, + options.propsData, // updated props + options.listeners, // updated listeners + vnode, // new parent vnode + options.children // new children + ); + }, + + insert: function insert (vnode) { + var context = vnode.context; + var componentInstance = vnode.componentInstance; + if (!componentInstance._isMounted) { + componentInstance._isMounted = true; + callHook(componentInstance, 'mounted'); + } + if (vnode.data.keepAlive) { + if (context._isMounted) { + // vue-router#1212 + // During updates, a kept-alive component's child components may + // change, so directly walking the tree here may call activated hooks + // on incorrect children. Instead we push them into a queue which will + // be processed after the whole patch process ended. + queueActivatedComponent(componentInstance); + } else { + activateChildComponent(componentInstance, true /* direct */); + } + } + }, + + destroy: function destroy (vnode) { + var componentInstance = vnode.componentInstance; + if (!componentInstance._isDestroyed) { + if (!vnode.data.keepAlive) { + componentInstance.$destroy(); + } else { + deactivateChildComponent(componentInstance, true /* direct */); + } + } + } +}; + +var hooksToMerge = Object.keys(componentVNodeHooks); + +function createComponent ( + Ctor, + data, + context, + children, + tag +) { + if (isUndef(Ctor)) { + return + } + + var baseCtor = context.$options._base; + + // plain options object: turn it into a constructor + if (isObject(Ctor)) { + Ctor = baseCtor.extend(Ctor); + } + + // if at this stage it's not a constructor or an async component factory, + // reject. + if (typeof Ctor !== 'function') { + { + warn(("Invalid Component definition: " + (String(Ctor))), context); + } + return + } + + // async component + var asyncFactory; + if (isUndef(Ctor.cid)) { + asyncFactory = Ctor; + Ctor = resolveAsyncComponent(asyncFactory, baseCtor); + if (Ctor === undefined) { + // return a placeholder node for async component, which is rendered + // as a comment node but preserves all the raw information for the node. + // the information will be used for async server-rendering and hydration. + return createAsyncPlaceholder( + asyncFactory, + data, + context, + children, + tag + ) + } + } + + data = data || {}; + + // resolve constructor options in case global mixins are applied after + // component constructor creation + resolveConstructorOptions(Ctor); + + // transform component v-model data into props & events + if (isDef(data.model)) { + transformModel(Ctor.options, data); + } + + // extract props + var propsData = extractPropsFromVNodeData(data, Ctor, tag); + + // functional component + if (isTrue(Ctor.options.functional)) { + return createFunctionalComponent(Ctor, propsData, data, context, children) + } + + // extract listeners, since these needs to be treated as + // child component listeners instead of DOM listeners + var listeners = data.on; + // replace with listeners with .native modifier + // so it gets processed during parent component patch. + data.on = data.nativeOn; + + if (isTrue(Ctor.options.abstract)) { + // abstract components do not keep anything + // other than props & listeners & slot + + // work around flow + var slot = data.slot; + data = {}; + if (slot) { + data.slot = slot; + } + } + + // install component management hooks onto the placeholder node + installComponentHooks(data); + + // return a placeholder vnode + var name = Ctor.options.name || tag; + var vnode = new VNode( + ("vue-component-" + (Ctor.cid) + (name ? ("-" + name) : '')), + data, undefined, undefined, undefined, context, + { Ctor: Ctor, propsData: propsData, listeners: listeners, tag: tag, children: children }, + asyncFactory + ); + + return vnode +} + +function createComponentInstanceForVnode ( + vnode, // we know it's MountedComponentVNode but flow doesn't + parent // activeInstance in lifecycle state +) { + var options = { + _isComponent: true, + _parentVnode: vnode, + parent: parent + }; + // check inline-template render functions + var inlineTemplate = vnode.data.inlineTemplate; + if (isDef(inlineTemplate)) { + options.render = inlineTemplate.render; + options.staticRenderFns = inlineTemplate.staticRenderFns; + } + return new vnode.componentOptions.Ctor(options) +} + +function installComponentHooks (data) { + var hooks = data.hook || (data.hook = {}); + for (var i = 0; i < hooksToMerge.length; i++) { + var key = hooksToMerge[i]; + var existing = hooks[key]; + var toMerge = componentVNodeHooks[key]; + if (existing !== toMerge && !(existing && existing._merged)) { + hooks[key] = existing ? mergeHook$1(toMerge, existing) : toMerge; + } + } +} + +function mergeHook$1 (f1, f2) { + var merged = function (a, b) { + // flow complains about extra args which is why we use any + f1(a, b); + f2(a, b); + }; + merged._merged = true; + return merged +} + +// transform component v-model info (value and callback) into +// prop and event handler respectively. +function transformModel (options, data) { + var prop = (options.model && options.model.prop) || 'value'; + var event = (options.model && options.model.event) || 'input' + ;(data.attrs || (data.attrs = {}))[prop] = data.model.value; + var on = data.on || (data.on = {}); + var existing = on[event]; + var callback = data.model.callback; + if (isDef(existing)) { + if ( + Array.isArray(existing) + ? existing.indexOf(callback) === -1 + : existing !== callback + ) { + on[event] = [callback].concat(existing); + } + } else { + on[event] = callback; + } +} + +/* */ + +var SIMPLE_NORMALIZE = 1; +var ALWAYS_NORMALIZE = 2; + +// wrapper function for providing a more flexible interface +// without getting yelled at by flow +function createElement ( + context, + tag, + data, + children, + normalizationType, + alwaysNormalize +) { + if (Array.isArray(data) || isPrimitive(data)) { + normalizationType = children; + children = data; + data = undefined; + } + if (isTrue(alwaysNormalize)) { + normalizationType = ALWAYS_NORMALIZE; + } + return _createElement(context, tag, data, children, normalizationType) +} + +function _createElement ( + context, + tag, + data, + children, + normalizationType +) { + if (isDef(data) && isDef((data).__ob__)) { + warn( + "Avoid using observed data object as vnode data: " + (JSON.stringify(data)) + "\n" + + 'Always create fresh vnode data objects in each render!', + context + ); + return createEmptyVNode() + } + // object syntax in v-bind + if (isDef(data) && isDef(data.is)) { + tag = data.is; + } + if (!tag) { + // in case of component :is set to falsy value + return createEmptyVNode() + } + // warn against non-primitive key + if (isDef(data) && isDef(data.key) && !isPrimitive(data.key) + ) { + { + warn( + 'Avoid using non-primitive value as key, ' + + 'use string/number value instead.', + context + ); + } + } + // support single function children as default scoped slot + if (Array.isArray(children) && + typeof children[0] === 'function' + ) { + data = data || {}; + data.scopedSlots = { default: children[0] }; + children.length = 0; + } + if (normalizationType === ALWAYS_NORMALIZE) { + children = normalizeChildren(children); + } else if (normalizationType === SIMPLE_NORMALIZE) { + children = simpleNormalizeChildren(children); + } + var vnode, ns; + if (typeof tag === 'string') { + var Ctor; + ns = (context.$vnode && context.$vnode.ns) || config.getTagNamespace(tag); + if (config.isReservedTag(tag)) { + // platform built-in elements + vnode = new VNode( + config.parsePlatformTagName(tag), data, children, + undefined, undefined, context + ); + } else if ((!data || !data.pre) && isDef(Ctor = resolveAsset(context.$options, 'components', tag))) { + // component + vnode = createComponent(Ctor, data, context, children, tag); + } else { + // unknown or unlisted namespaced elements + // check at runtime because it may get assigned a namespace when its + // parent normalizes children + vnode = new VNode( + tag, data, children, + undefined, undefined, context + ); + } + } else { + // direct component options / constructor + vnode = createComponent(tag, data, context, children); + } + if (Array.isArray(vnode)) { + return vnode + } else if (isDef(vnode)) { + if (isDef(ns)) { applyNS(vnode, ns); } + if (isDef(data)) { registerDeepBindings(data); } + return vnode + } else { + return createEmptyVNode() + } +} + +function applyNS (vnode, ns, force) { + vnode.ns = ns; + if (vnode.tag === 'foreignObject') { + // use default namespace inside foreignObject + ns = undefined; + force = true; + } + if (isDef(vnode.children)) { + for (var i = 0, l = vnode.children.length; i < l; i++) { + var child = vnode.children[i]; + if (isDef(child.tag) && ( + isUndef(child.ns) || (isTrue(force) && child.tag !== 'svg'))) { + applyNS(child, ns, force); + } + } + } +} + +// ref #5318 +// necessary to ensure parent re-render when deep bindings like :style and +// :class are used on slot nodes +function registerDeepBindings (data) { + if (isObject(data.style)) { + traverse(data.style); + } + if (isObject(data.class)) { + traverse(data.class); + } +} + +/* */ + +function initRender (vm) { + vm._vnode = null; // the root of the child tree + vm._staticTrees = null; // v-once cached trees + var options = vm.$options; + var parentVnode = vm.$vnode = options._parentVnode; // the placeholder node in parent tree + var renderContext = parentVnode && parentVnode.context; + vm.$slots = resolveSlots(options._renderChildren, renderContext); + vm.$scopedSlots = emptyObject; + // bind the createElement fn to this instance + // so that we get proper render context inside it. + // args order: tag, data, children, normalizationType, alwaysNormalize + // internal version is used by render functions compiled from templates + vm._c = function (a, b, c, d) { return createElement(vm, a, b, c, d, false); }; + // normalization is always applied for the public version, used in + // user-written render functions. + vm.$createElement = function (a, b, c, d) { return createElement(vm, a, b, c, d, true); }; + + // $attrs & $listeners are exposed for easier HOC creation. + // they need to be reactive so that HOCs using them are always updated + var parentData = parentVnode && parentVnode.data; + + /* istanbul ignore else */ + { + defineReactive$$1(vm, '$attrs', parentData && parentData.attrs || emptyObject, function () { + !isUpdatingChildComponent && warn("$attrs is readonly.", vm); + }, true); + defineReactive$$1(vm, '$listeners', options._parentListeners || emptyObject, function () { + !isUpdatingChildComponent && warn("$listeners is readonly.", vm); + }, true); + } +} + +var currentRenderingInstance = null; + +function renderMixin (Vue) { + // install runtime convenience helpers + installRenderHelpers(Vue.prototype); + + Vue.prototype.$nextTick = function (fn) { + return nextTick(fn, this) + }; + + Vue.prototype._render = function () { + var vm = this; + var ref = vm.$options; + var render = ref.render; + var _parentVnode = ref._parentVnode; + + if (_parentVnode) { + vm.$scopedSlots = normalizeScopedSlots( + _parentVnode.data.scopedSlots, + vm.$slots, + vm.$scopedSlots + ); + } + + // set parent vnode. this allows render functions to have access + // to the data on the placeholder node. + vm.$vnode = _parentVnode; + // render self + var vnode; + try { + // There's no need to maintain a stack becaues all render fns are called + // separately from one another. Nested component's render fns are called + // when parent component is patched. + currentRenderingInstance = vm; + vnode = render.call(vm._renderProxy, vm.$createElement); + } catch (e) { + handleError(e, vm, "render"); + // return error render result, + // or previous vnode to prevent render error causing blank component + /* istanbul ignore else */ + if (vm.$options.renderError) { + try { + vnode = vm.$options.renderError.call(vm._renderProxy, vm.$createElement, e); + } catch (e) { + handleError(e, vm, "renderError"); + vnode = vm._vnode; + } + } else { + vnode = vm._vnode; + } + } finally { + currentRenderingInstance = null; + } + // if the returned array contains only a single node, allow it + if (Array.isArray(vnode) && vnode.length === 1) { + vnode = vnode[0]; + } + // return empty vnode in case the render function errored out + if (!(vnode instanceof VNode)) { + if (Array.isArray(vnode)) { + warn( + 'Multiple root nodes returned from render function. Render function ' + + 'should return a single root node.', + vm + ); + } + vnode = createEmptyVNode(); + } + // set parent + vnode.parent = _parentVnode; + return vnode + }; +} + +/* */ + +function ensureCtor (comp, base) { + if ( + comp.__esModule || + (hasSymbol && comp[Symbol.toStringTag] === 'Module') + ) { + comp = comp.default; + } + return isObject(comp) + ? base.extend(comp) + : comp +} + +function createAsyncPlaceholder ( + factory, + data, + context, + children, + tag +) { + var node = createEmptyVNode(); + node.asyncFactory = factory; + node.asyncMeta = { data: data, context: context, children: children, tag: tag }; + return node +} + +function resolveAsyncComponent ( + factory, + baseCtor +) { + if (isTrue(factory.error) && isDef(factory.errorComp)) { + return factory.errorComp + } + + if (isDef(factory.resolved)) { + return factory.resolved + } + + var owner = currentRenderingInstance; + if (owner && isDef(factory.owners) && factory.owners.indexOf(owner) === -1) { + // already pending + factory.owners.push(owner); + } + + if (isTrue(factory.loading) && isDef(factory.loadingComp)) { + return factory.loadingComp + } + + if (owner && !isDef(factory.owners)) { + var owners = factory.owners = [owner]; + var sync = true; + var timerLoading = null; + var timerTimeout = null + + ;(owner).$on('hook:destroyed', function () { return remove(owners, owner); }); + + var forceRender = function (renderCompleted) { + for (var i = 0, l = owners.length; i < l; i++) { + (owners[i]).$forceUpdate(); + } + + if (renderCompleted) { + owners.length = 0; + if (timerLoading !== null) { + clearTimeout(timerLoading); + timerLoading = null; + } + if (timerTimeout !== null) { + clearTimeout(timerTimeout); + timerTimeout = null; + } + } + }; + + var resolve = once(function (res) { + // cache resolved + factory.resolved = ensureCtor(res, baseCtor); + // invoke callbacks only if this is not a synchronous resolve + // (async resolves are shimmed as synchronous during SSR) + if (!sync) { + forceRender(true); + } else { + owners.length = 0; + } + }); + + var reject = once(function (reason) { + warn( + "Failed to resolve async component: " + (String(factory)) + + (reason ? ("\nReason: " + reason) : '') + ); + if (isDef(factory.errorComp)) { + factory.error = true; + forceRender(true); + } + }); + + var res = factory(resolve, reject); + + if (isObject(res)) { + if (isPromise(res)) { + // () => Promise + if (isUndef(factory.resolved)) { + res.then(resolve, reject); + } + } else if (isPromise(res.component)) { + res.component.then(resolve, reject); + + if (isDef(res.error)) { + factory.errorComp = ensureCtor(res.error, baseCtor); + } + + if (isDef(res.loading)) { + factory.loadingComp = ensureCtor(res.loading, baseCtor); + if (res.delay === 0) { + factory.loading = true; + } else { + timerLoading = setTimeout(function () { + timerLoading = null; + if (isUndef(factory.resolved) && isUndef(factory.error)) { + factory.loading = true; + forceRender(false); + } + }, res.delay || 200); + } + } + + if (isDef(res.timeout)) { + timerTimeout = setTimeout(function () { + timerTimeout = null; + if (isUndef(factory.resolved)) { + reject( + "timeout (" + (res.timeout) + "ms)" + ); + } + }, res.timeout); + } + } + } + + sync = false; + // return in case resolved synchronously + return factory.loading + ? factory.loadingComp + : factory.resolved + } +} + +/* */ + +function isAsyncPlaceholder (node) { + return node.isComment && node.asyncFactory +} + +/* */ + +function getFirstComponentChild (children) { + if (Array.isArray(children)) { + for (var i = 0; i < children.length; i++) { + var c = children[i]; + if (isDef(c) && (isDef(c.componentOptions) || isAsyncPlaceholder(c))) { + return c + } + } + } +} + +/* */ + +/* */ + +function initEvents (vm) { + vm._events = Object.create(null); + vm._hasHookEvent = false; + // init parent attached events + var listeners = vm.$options._parentListeners; + if (listeners) { + updateComponentListeners(vm, listeners); + } +} + +var target; + +function add (event, fn) { + target.$on(event, fn); +} + +function remove$1 (event, fn) { + target.$off(event, fn); +} + +function createOnceHandler (event, fn) { + var _target = target; + return function onceHandler () { + var res = fn.apply(null, arguments); + if (res !== null) { + _target.$off(event, onceHandler); + } + } +} + +function updateComponentListeners ( + vm, + listeners, + oldListeners +) { + target = vm; + updateListeners(listeners, oldListeners || {}, add, remove$1, createOnceHandler, vm); + target = undefined; +} + +function eventsMixin (Vue) { + var hookRE = /^hook:/; + Vue.prototype.$on = function (event, fn) { + var vm = this; + if (Array.isArray(event)) { + for (var i = 0, l = event.length; i < l; i++) { + vm.$on(event[i], fn); + } + } else { + (vm._events[event] || (vm._events[event] = [])).push(fn); + // optimize hook:event cost by using a boolean flag marked at registration + // instead of a hash lookup + if (hookRE.test(event)) { + vm._hasHookEvent = true; + } + } + return vm + }; + + Vue.prototype.$once = function (event, fn) { + var vm = this; + function on () { + vm.$off(event, on); + fn.apply(vm, arguments); + } + on.fn = fn; + vm.$on(event, on); + return vm + }; + + Vue.prototype.$off = function (event, fn) { + var vm = this; + // all + if (!arguments.length) { + vm._events = Object.create(null); + return vm + } + // array of events + if (Array.isArray(event)) { + for (var i$1 = 0, l = event.length; i$1 < l; i$1++) { + vm.$off(event[i$1], fn); + } + return vm + } + // specific event + var cbs = vm._events[event]; + if (!cbs) { + return vm + } + if (!fn) { + vm._events[event] = null; + return vm + } + // specific handler + var cb; + var i = cbs.length; + while (i--) { + cb = cbs[i]; + if (cb === fn || cb.fn === fn) { + cbs.splice(i, 1); + break + } + } + return vm + }; + + Vue.prototype.$emit = function (event) { + var vm = this; + { + var lowerCaseEvent = event.toLowerCase(); + if (lowerCaseEvent !== event && vm._events[lowerCaseEvent]) { + tip( + "Event \"" + lowerCaseEvent + "\" is emitted in component " + + (formatComponentName(vm)) + " but the handler is registered for \"" + event + "\". " + + "Note that HTML attributes are case-insensitive and you cannot use " + + "v-on to listen to camelCase events when using in-DOM templates. " + + "You should probably use \"" + (hyphenate(event)) + "\" instead of \"" + event + "\"." + ); + } + } + var cbs = vm._events[event]; + if (cbs) { + cbs = cbs.length > 1 ? toArray(cbs) : cbs; + var args = toArray(arguments, 1); + var info = "event handler for \"" + event + "\""; + for (var i = 0, l = cbs.length; i < l; i++) { + invokeWithErrorHandling(cbs[i], vm, args, vm, info); + } + } + return vm + }; +} + +/* */ + +var activeInstance = null; +var isUpdatingChildComponent = false; + +function setActiveInstance(vm) { + var prevActiveInstance = activeInstance; + activeInstance = vm; + return function () { + activeInstance = prevActiveInstance; + } +} + +function initLifecycle (vm) { + var options = vm.$options; + + // locate first non-abstract parent + var parent = options.parent; + if (parent && !options.abstract) { + while (parent.$options.abstract && parent.$parent) { + parent = parent.$parent; + } + parent.$children.push(vm); + } + + vm.$parent = parent; + vm.$root = parent ? parent.$root : vm; + + vm.$children = []; + vm.$refs = {}; + + vm._watcher = null; + vm._inactive = null; + vm._directInactive = false; + vm._isMounted = false; + vm._isDestroyed = false; + vm._isBeingDestroyed = false; +} + +function lifecycleMixin (Vue) { + Vue.prototype._update = function (vnode, hydrating) { + var vm = this; + var prevEl = vm.$el; + var prevVnode = vm._vnode; + var restoreActiveInstance = setActiveInstance(vm); + vm._vnode = vnode; + // Vue.prototype.__patch__ is injected in entry points + // based on the rendering backend used. + if (!prevVnode) { + // initial render + vm.$el = vm.__patch__(vm.$el, vnode, hydrating, false /* removeOnly */); + } else { + // updates + vm.$el = vm.__patch__(prevVnode, vnode); + } + restoreActiveInstance(); + // update __vue__ reference + if (prevEl) { + prevEl.__vue__ = null; + } + if (vm.$el) { + vm.$el.__vue__ = vm; + } + // if parent is an HOC, update its $el as well + if (vm.$vnode && vm.$parent && vm.$vnode === vm.$parent._vnode) { + vm.$parent.$el = vm.$el; + } + // updated hook is called by the scheduler to ensure that children are + // updated in a parent's updated hook. + }; + + Vue.prototype.$forceUpdate = function () { + var vm = this; + if (vm._watcher) { + vm._watcher.update(); + } + }; + + Vue.prototype.$destroy = function () { + var vm = this; + if (vm._isBeingDestroyed) { + return + } + callHook(vm, 'beforeDestroy'); + vm._isBeingDestroyed = true; + // remove self from parent + var parent = vm.$parent; + if (parent && !parent._isBeingDestroyed && !vm.$options.abstract) { + remove(parent.$children, vm); + } + // teardown watchers + if (vm._watcher) { + vm._watcher.teardown(); + } + var i = vm._watchers.length; + while (i--) { + vm._watchers[i].teardown(); + } + // remove reference from data ob + // frozen object may not have observer. + if (vm._data.__ob__) { + vm._data.__ob__.vmCount--; + } + // call the last hook... + vm._isDestroyed = true; + // invoke destroy hooks on current rendered tree + vm.__patch__(vm._vnode, null); + // fire destroyed hook + callHook(vm, 'destroyed'); + // turn off all instance listeners. + vm.$off(); + // remove __vue__ reference + if (vm.$el) { + vm.$el.__vue__ = null; + } + // release circular reference (#6759) + if (vm.$vnode) { + vm.$vnode.parent = null; + } + }; +} + +function mountComponent ( + vm, + el, + hydrating +) { + vm.$el = el; + if (!vm.$options.render) { + vm.$options.render = createEmptyVNode; + { + /* istanbul ignore if */ + if ((vm.$options.template && vm.$options.template.charAt(0) !== '#') || + vm.$options.el || el) { + warn( + 'You are using the runtime-only build of Vue where the template ' + + 'compiler is not available. Either pre-compile the templates into ' + + 'render functions, or use the compiler-included build.', + vm + ); + } else { + warn( + 'Failed to mount component: template or render function not defined.', + vm + ); + } + } + } + callHook(vm, 'beforeMount'); + + var updateComponent; + /* istanbul ignore if */ + if (config.performance && mark) { + updateComponent = function () { + var name = vm._name; + var id = vm._uid; + var startTag = "vue-perf-start:" + id; + var endTag = "vue-perf-end:" + id; + + mark(startTag); + var vnode = vm._render(); + mark(endTag); + measure(("vue " + name + " render"), startTag, endTag); + + mark(startTag); + vm._update(vnode, hydrating); + mark(endTag); + measure(("vue " + name + " patch"), startTag, endTag); + }; + } else { + updateComponent = function () { + vm._update(vm._render(), hydrating); + }; + } + + // we set this to vm._watcher inside the watcher's constructor + // since the watcher's initial patch may call $forceUpdate (e.g. inside child + // component's mounted hook), which relies on vm._watcher being already defined + new Watcher(vm, updateComponent, noop, { + before: function before () { + if (vm._isMounted && !vm._isDestroyed) { + callHook(vm, 'beforeUpdate'); + } + } + }, true /* isRenderWatcher */); + hydrating = false; + + // manually mounted instance, call mounted on self + // mounted is called for render-created child components in its inserted hook + if (vm.$vnode == null) { + vm._isMounted = true; + callHook(vm, 'mounted'); + } + return vm +} + +function updateChildComponent ( + vm, + propsData, + listeners, + parentVnode, + renderChildren +) { + { + isUpdatingChildComponent = true; + } + + // determine whether component has slot children + // we need to do this before overwriting $options._renderChildren. + + // check if there are dynamic scopedSlots (hand-written or compiled but with + // dynamic slot names). Static scoped slots compiled from template has the + // "$stable" marker. + var newScopedSlots = parentVnode.data.scopedSlots; + var oldScopedSlots = vm.$scopedSlots; + var hasDynamicScopedSlot = !!( + (newScopedSlots && !newScopedSlots.$stable) || + (oldScopedSlots !== emptyObject && !oldScopedSlots.$stable) || + (newScopedSlots && vm.$scopedSlots.$key !== newScopedSlots.$key) + ); + + // Any static slot children from the parent may have changed during parent's + // update. Dynamic scoped slots may also have changed. In such cases, a forced + // update is necessary to ensure correctness. + var needsForceUpdate = !!( + renderChildren || // has new static slots + vm.$options._renderChildren || // has old static slots + hasDynamicScopedSlot + ); + + vm.$options._parentVnode = parentVnode; + vm.$vnode = parentVnode; // update vm's placeholder node without re-render + + if (vm._vnode) { // update child tree's parent + vm._vnode.parent = parentVnode; + } + vm.$options._renderChildren = renderChildren; + + // update $attrs and $listeners hash + // these are also reactive so they may trigger child update if the child + // used them during render + vm.$attrs = parentVnode.data.attrs || emptyObject; + vm.$listeners = listeners || emptyObject; + + // update props + if (propsData && vm.$options.props) { + toggleObserving(false); + var props = vm._props; + var propKeys = vm.$options._propKeys || []; + for (var i = 0; i < propKeys.length; i++) { + var key = propKeys[i]; + var propOptions = vm.$options.props; // wtf flow? + props[key] = validateProp(key, propOptions, propsData, vm); + } + toggleObserving(true); + // keep a copy of raw propsData + vm.$options.propsData = propsData; + } + + // update listeners + listeners = listeners || emptyObject; + var oldListeners = vm.$options._parentListeners; + vm.$options._parentListeners = listeners; + updateComponentListeners(vm, listeners, oldListeners); + + // resolve slots + force update if has children + if (needsForceUpdate) { + vm.$slots = resolveSlots(renderChildren, parentVnode.context); + vm.$forceUpdate(); + } + + { + isUpdatingChildComponent = false; + } +} + +function isInInactiveTree (vm) { + while (vm && (vm = vm.$parent)) { + if (vm._inactive) { return true } + } + return false +} + +function activateChildComponent (vm, direct) { + if (direct) { + vm._directInactive = false; + if (isInInactiveTree(vm)) { + return + } + } else if (vm._directInactive) { + return + } + if (vm._inactive || vm._inactive === null) { + vm._inactive = false; + for (var i = 0; i < vm.$children.length; i++) { + activateChildComponent(vm.$children[i]); + } + callHook(vm, 'activated'); + } +} + +function deactivateChildComponent (vm, direct) { + if (direct) { + vm._directInactive = true; + if (isInInactiveTree(vm)) { + return + } + } + if (!vm._inactive) { + vm._inactive = true; + for (var i = 0; i < vm.$children.length; i++) { + deactivateChildComponent(vm.$children[i]); + } + callHook(vm, 'deactivated'); + } +} + +function callHook (vm, hook) { + // #7573 disable dep collection when invoking lifecycle hooks + pushTarget(); + var handlers = vm.$options[hook]; + var info = hook + " hook"; + if (handlers) { + for (var i = 0, j = handlers.length; i < j; i++) { + invokeWithErrorHandling(handlers[i], vm, null, vm, info); + } + } + if (vm._hasHookEvent) { + vm.$emit('hook:' + hook); + } + popTarget(); +} + +/* */ + +var MAX_UPDATE_COUNT = 100; + +var queue = []; +var activatedChildren = []; +var has = {}; +var circular = {}; +var waiting = false; +var flushing = false; +var index = 0; + +/** + * Reset the scheduler's state. + */ +function resetSchedulerState () { + index = queue.length = activatedChildren.length = 0; + has = {}; + { + circular = {}; + } + waiting = flushing = false; +} + +// Async edge case #6566 requires saving the timestamp when event listeners are +// attached. However, calling performance.now() has a perf overhead especially +// if the page has thousands of event listeners. Instead, we take a timestamp +// every time the scheduler flushes and use that for all event listeners +// attached during that flush. +var currentFlushTimestamp = 0; + +// Async edge case fix requires storing an event listener's attach timestamp. +var getNow = Date.now; + +// Determine what event timestamp the browser is using. Annoyingly, the +// timestamp can either be hi-res (relative to page load) or low-res +// (relative to UNIX epoch), so in order to compare time we have to use the +// same timestamp type when saving the flush timestamp. +// All IE versions use low-res event timestamps, and have problematic clock +// implementations (#9632) +if (inBrowser && !isIE) { + var performance = window.performance; + if ( + performance && + typeof performance.now === 'function' && + getNow() > document.createEvent('Event').timeStamp + ) { + // if the event timestamp, although evaluated AFTER the Date.now(), is + // smaller than it, it means the event is using a hi-res timestamp, + // and we need to use the hi-res version for event listener timestamps as + // well. + getNow = function () { return performance.now(); }; + } +} + +/** + * Flush both queues and run the watchers. + */ +function flushSchedulerQueue () { + currentFlushTimestamp = getNow(); + flushing = true; + var watcher, id; + + // Sort queue before flush. + // This ensures that: + // 1. Components are updated from parent to child. (because parent is always + // created before the child) + // 2. A component's user watchers are run before its render watcher (because + // user watchers are created before the render watcher) + // 3. If a component is destroyed during a parent component's watcher run, + // its watchers can be skipped. + queue.sort(function (a, b) { return a.id - b.id; }); + + // do not cache length because more watchers might be pushed + // as we run existing watchers + for (index = 0; index < queue.length; index++) { + watcher = queue[index]; + if (watcher.before) { + watcher.before(); + } + id = watcher.id; + has[id] = null; + watcher.run(); + // in dev build, check and stop circular updates. + if (has[id] != null) { + circular[id] = (circular[id] || 0) + 1; + if (circular[id] > MAX_UPDATE_COUNT) { + warn( + 'You may have an infinite update loop ' + ( + watcher.user + ? ("in watcher with expression \"" + (watcher.expression) + "\"") + : "in a component render function." + ), + watcher.vm + ); + break + } + } + } + + // keep copies of post queues before resetting state + var activatedQueue = activatedChildren.slice(); + var updatedQueue = queue.slice(); + + resetSchedulerState(); + + // call component updated and activated hooks + callActivatedHooks(activatedQueue); + callUpdatedHooks(updatedQueue); + + // devtool hook + /* istanbul ignore if */ + if (devtools && config.devtools) { + devtools.emit('flush'); + } +} + +function callUpdatedHooks (queue) { + var i = queue.length; + while (i--) { + var watcher = queue[i]; + var vm = watcher.vm; + if (vm._watcher === watcher && vm._isMounted && !vm._isDestroyed) { + callHook(vm, 'updated'); + } + } +} + +/** + * Queue a kept-alive component that was activated during patch. + * The queue will be processed after the entire tree has been patched. + */ +function queueActivatedComponent (vm) { + // setting _inactive to false here so that a render function can + // rely on checking whether it's in an inactive tree (e.g. router-view) + vm._inactive = false; + activatedChildren.push(vm); +} + +function callActivatedHooks (queue) { + for (var i = 0; i < queue.length; i++) { + queue[i]._inactive = true; + activateChildComponent(queue[i], true /* true */); + } +} + +/** + * Push a watcher into the watcher queue. + * Jobs with duplicate IDs will be skipped unless it's + * pushed when the queue is being flushed. + */ +function queueWatcher (watcher) { + var id = watcher.id; + if (has[id] == null) { + has[id] = true; + if (!flushing) { + queue.push(watcher); + } else { + // if already flushing, splice the watcher based on its id + // if already past its id, it will be run next immediately. + var i = queue.length - 1; + while (i > index && queue[i].id > watcher.id) { + i--; + } + queue.splice(i + 1, 0, watcher); + } + // queue the flush + if (!waiting) { + waiting = true; + + if (!config.async) { + flushSchedulerQueue(); + return + } + nextTick(flushSchedulerQueue); + } + } +} + +/* */ + + + +var uid$2 = 0; + +/** + * A watcher parses an expression, collects dependencies, + * and fires callback when the expression value changes. + * This is used for both the $watch() api and directives. + */ +var Watcher = function Watcher ( + vm, + expOrFn, + cb, + options, + isRenderWatcher +) { + this.vm = vm; + if (isRenderWatcher) { + vm._watcher = this; + } + vm._watchers.push(this); + // options + if (options) { + this.deep = !!options.deep; + this.user = !!options.user; + this.lazy = !!options.lazy; + this.sync = !!options.sync; + this.before = options.before; + } else { + this.deep = this.user = this.lazy = this.sync = false; + } + this.cb = cb; + this.id = ++uid$2; // uid for batching + this.active = true; + this.dirty = this.lazy; // for lazy watchers + this.deps = []; + this.newDeps = []; + this.depIds = new _Set(); + this.newDepIds = new _Set(); + this.expression = expOrFn.toString(); + // parse expression for getter + if (typeof expOrFn === 'function') { + this.getter = expOrFn; + } else { + this.getter = parsePath(expOrFn); + if (!this.getter) { + this.getter = noop; + warn( + "Failed watching path: \"" + expOrFn + "\" " + + 'Watcher only accepts simple dot-delimited paths. ' + + 'For full control, use a function instead.', + vm + ); + } + } + this.value = this.lazy + ? undefined + : this.get(); +}; + +/** + * Evaluate the getter, and re-collect dependencies. + */ +Watcher.prototype.get = function get () { + pushTarget(this); + var value; + var vm = this.vm; + try { + value = this.getter.call(vm, vm); + } catch (e) { + if (this.user) { + handleError(e, vm, ("getter for watcher \"" + (this.expression) + "\"")); + } else { + throw e + } + } finally { + // "touch" every property so they are all tracked as + // dependencies for deep watching + if (this.deep) { + traverse(value); + } + popTarget(); + this.cleanupDeps(); + } + return value +}; + +/** + * Add a dependency to this directive. + */ +Watcher.prototype.addDep = function addDep (dep) { + var id = dep.id; + if (!this.newDepIds.has(id)) { + this.newDepIds.add(id); + this.newDeps.push(dep); + if (!this.depIds.has(id)) { + dep.addSub(this); + } + } +}; + +/** + * Clean up for dependency collection. + */ +Watcher.prototype.cleanupDeps = function cleanupDeps () { + var i = this.deps.length; + while (i--) { + var dep = this.deps[i]; + if (!this.newDepIds.has(dep.id)) { + dep.removeSub(this); + } + } + var tmp = this.depIds; + this.depIds = this.newDepIds; + this.newDepIds = tmp; + this.newDepIds.clear(); + tmp = this.deps; + this.deps = this.newDeps; + this.newDeps = tmp; + this.newDeps.length = 0; +}; + +/** + * Subscriber interface. + * Will be called when a dependency changes. + */ +Watcher.prototype.update = function update () { + /* istanbul ignore else */ + if (this.lazy) { + this.dirty = true; + } else if (this.sync) { + this.run(); + } else { + queueWatcher(this); + } +}; + +/** + * Scheduler job interface. + * Will be called by the scheduler. + */ +Watcher.prototype.run = function run () { + if (this.active) { + var value = this.get(); + if ( + value !== this.value || + // Deep watchers and watchers on Object/Arrays should fire even + // when the value is the same, because the value may + // have mutated. + isObject(value) || + this.deep + ) { + // set new value + var oldValue = this.value; + this.value = value; + if (this.user) { + try { + this.cb.call(this.vm, value, oldValue); + } catch (e) { + handleError(e, this.vm, ("callback for watcher \"" + (this.expression) + "\"")); + } + } else { + this.cb.call(this.vm, value, oldValue); + } + } + } +}; + +/** + * Evaluate the value of the watcher. + * This only gets called for lazy watchers. + */ +Watcher.prototype.evaluate = function evaluate () { + this.value = this.get(); + this.dirty = false; +}; + +/** + * Depend on all deps collected by this watcher. + */ +Watcher.prototype.depend = function depend () { + var i = this.deps.length; + while (i--) { + this.deps[i].depend(); + } +}; + +/** + * Remove self from all dependencies' subscriber list. + */ +Watcher.prototype.teardown = function teardown () { + if (this.active) { + // remove self from vm's watcher list + // this is a somewhat expensive operation so we skip it + // if the vm is being destroyed. + if (!this.vm._isBeingDestroyed) { + remove(this.vm._watchers, this); + } + var i = this.deps.length; + while (i--) { + this.deps[i].removeSub(this); + } + this.active = false; + } +}; + +/* */ + +var sharedPropertyDefinition = { + enumerable: true, + configurable: true, + get: noop, + set: noop +}; + +function proxy (target, sourceKey, key) { + sharedPropertyDefinition.get = function proxyGetter () { + return this[sourceKey][key] + }; + sharedPropertyDefinition.set = function proxySetter (val) { + this[sourceKey][key] = val; + }; + Object.defineProperty(target, key, sharedPropertyDefinition); +} + +function initState (vm) { + vm._watchers = []; + var opts = vm.$options; + if (opts.props) { initProps(vm, opts.props); } + if (opts.methods) { initMethods(vm, opts.methods); } + if (opts.data) { + initData(vm); + } else { + observe(vm._data = {}, true /* asRootData */); + } + if (opts.computed) { initComputed(vm, opts.computed); } + if (opts.watch && opts.watch !== nativeWatch) { + initWatch(vm, opts.watch); + } +} + +function initProps (vm, propsOptions) { + var propsData = vm.$options.propsData || {}; + var props = vm._props = {}; + // cache prop keys so that future props updates can iterate using Array + // instead of dynamic object key enumeration. + var keys = vm.$options._propKeys = []; + var isRoot = !vm.$parent; + // root instance props should be converted + if (!isRoot) { + toggleObserving(false); + } + var loop = function ( key ) { + keys.push(key); + var value = validateProp(key, propsOptions, propsData, vm); + /* istanbul ignore else */ + { + var hyphenatedKey = hyphenate(key); + if (isReservedAttribute(hyphenatedKey) || + config.isReservedAttr(hyphenatedKey)) { + warn( + ("\"" + hyphenatedKey + "\" is a reserved attribute and cannot be used as component prop."), + vm + ); + } + defineReactive$$1(props, key, value, function () { + if (!isRoot && !isUpdatingChildComponent) { + warn( + "Avoid mutating a prop directly since the value will be " + + "overwritten whenever the parent component re-renders. " + + "Instead, use a data or computed property based on the prop's " + + "value. Prop being mutated: \"" + key + "\"", + vm + ); + } + }); + } + // static props are already proxied on the component's prototype + // during Vue.extend(). We only need to proxy props defined at + // instantiation here. + if (!(key in vm)) { + proxy(vm, "_props", key); + } + }; + + for (var key in propsOptions) loop( key ); + toggleObserving(true); +} + +function initData (vm) { + var data = vm.$options.data; + data = vm._data = typeof data === 'function' + ? getData(data, vm) + : data || {}; + if (!isPlainObject(data)) { + data = {}; + warn( + 'data functions should return an object:\n' + + 'https://vuejs.org/v2/guide/components.html#data-Must-Be-a-Function', + vm + ); + } + // proxy data on instance + var keys = Object.keys(data); + var props = vm.$options.props; + var methods = vm.$options.methods; + var i = keys.length; + while (i--) { + var key = keys[i]; + { + if (methods && hasOwn(methods, key)) { + warn( + ("Method \"" + key + "\" has already been defined as a data property."), + vm + ); + } + } + if (props && hasOwn(props, key)) { + warn( + "The data property \"" + key + "\" is already declared as a prop. " + + "Use prop default value instead.", + vm + ); + } else if (!isReserved(key)) { + proxy(vm, "_data", key); + } + } + // observe data + observe(data, true /* asRootData */); +} + +function getData (data, vm) { + // #7573 disable dep collection when invoking data getters + pushTarget(); + try { + return data.call(vm, vm) + } catch (e) { + handleError(e, vm, "data()"); + return {} + } finally { + popTarget(); + } +} + +var computedWatcherOptions = { lazy: true }; + +function initComputed (vm, computed) { + // $flow-disable-line + var watchers = vm._computedWatchers = Object.create(null); + // computed properties are just getters during SSR + var isSSR = isServerRendering(); + + for (var key in computed) { + var userDef = computed[key]; + var getter = typeof userDef === 'function' ? userDef : userDef.get; + if (getter == null) { + warn( + ("Getter is missing for computed property \"" + key + "\"."), + vm + ); + } + + if (!isSSR) { + // create internal watcher for the computed property. + watchers[key] = new Watcher( + vm, + getter || noop, + noop, + computedWatcherOptions + ); + } + + // component-defined computed properties are already defined on the + // component prototype. We only need to define computed properties defined + // at instantiation here. + if (!(key in vm)) { + defineComputed(vm, key, userDef); + } else { + if (key in vm.$data) { + warn(("The computed property \"" + key + "\" is already defined in data."), vm); + } else if (vm.$options.props && key in vm.$options.props) { + warn(("The computed property \"" + key + "\" is already defined as a prop."), vm); + } + } + } +} + +function defineComputed ( + target, + key, + userDef +) { + var shouldCache = !isServerRendering(); + if (typeof userDef === 'function') { + sharedPropertyDefinition.get = shouldCache + ? createComputedGetter(key) + : createGetterInvoker(userDef); + sharedPropertyDefinition.set = noop; + } else { + sharedPropertyDefinition.get = userDef.get + ? shouldCache && userDef.cache !== false + ? createComputedGetter(key) + : createGetterInvoker(userDef.get) + : noop; + sharedPropertyDefinition.set = userDef.set || noop; + } + if (sharedPropertyDefinition.set === noop) { + sharedPropertyDefinition.set = function () { + warn( + ("Computed property \"" + key + "\" was assigned to but it has no setter."), + this + ); + }; + } + Object.defineProperty(target, key, sharedPropertyDefinition); +} + +function createComputedGetter (key) { + return function computedGetter () { + var watcher = this._computedWatchers && this._computedWatchers[key]; + if (watcher) { + if (watcher.dirty) { + watcher.evaluate(); + } + if (Dep.target) { + watcher.depend(); + } + return watcher.value + } + } +} + +function createGetterInvoker(fn) { + return function computedGetter () { + return fn.call(this, this) + } +} + +function initMethods (vm, methods) { + var props = vm.$options.props; + for (var key in methods) { + { + if (typeof methods[key] !== 'function') { + warn( + "Method \"" + key + "\" has type \"" + (typeof methods[key]) + "\" in the component definition. " + + "Did you reference the function correctly?", + vm + ); + } + if (props && hasOwn(props, key)) { + warn( + ("Method \"" + key + "\" has already been defined as a prop."), + vm + ); + } + if ((key in vm) && isReserved(key)) { + warn( + "Method \"" + key + "\" conflicts with an existing Vue instance method. " + + "Avoid defining component methods that start with _ or $." + ); + } + } + vm[key] = typeof methods[key] !== 'function' ? noop : bind(methods[key], vm); + } +} + +function initWatch (vm, watch) { + for (var key in watch) { + var handler = watch[key]; + if (Array.isArray(handler)) { + for (var i = 0; i < handler.length; i++) { + createWatcher(vm, key, handler[i]); + } + } else { + createWatcher(vm, key, handler); + } + } +} + +function createWatcher ( + vm, + expOrFn, + handler, + options +) { + if (isPlainObject(handler)) { + options = handler; + handler = handler.handler; + } + if (typeof handler === 'string') { + handler = vm[handler]; + } + return vm.$watch(expOrFn, handler, options) +} + +function stateMixin (Vue) { + // flow somehow has problems with directly declared definition object + // when using Object.defineProperty, so we have to procedurally build up + // the object here. + var dataDef = {}; + dataDef.get = function () { return this._data }; + var propsDef = {}; + propsDef.get = function () { return this._props }; + { + dataDef.set = function () { + warn( + 'Avoid replacing instance root $data. ' + + 'Use nested data properties instead.', + this + ); + }; + propsDef.set = function () { + warn("$props is readonly.", this); + }; + } + Object.defineProperty(Vue.prototype, '$data', dataDef); + Object.defineProperty(Vue.prototype, '$props', propsDef); + + Vue.prototype.$set = set; + Vue.prototype.$delete = del; + + Vue.prototype.$watch = function ( + expOrFn, + cb, + options + ) { + var vm = this; + if (isPlainObject(cb)) { + return createWatcher(vm, expOrFn, cb, options) + } + options = options || {}; + options.user = true; + var watcher = new Watcher(vm, expOrFn, cb, options); + if (options.immediate) { + try { + cb.call(vm, watcher.value); + } catch (error) { + handleError(error, vm, ("callback for immediate watcher \"" + (watcher.expression) + "\"")); + } + } + return function unwatchFn () { + watcher.teardown(); + } + }; +} + +/* */ + +var uid$3 = 0; + +function initMixin (Vue) { + Vue.prototype._init = function (options) { + var vm = this; + // a uid + vm._uid = uid$3++; + + var startTag, endTag; + /* istanbul ignore if */ + if (config.performance && mark) { + startTag = "vue-perf-start:" + (vm._uid); + endTag = "vue-perf-end:" + (vm._uid); + mark(startTag); + } + + // a flag to avoid this being observed + vm._isVue = true; + // merge options + if (options && options._isComponent) { + // optimize internal component instantiation + // since dynamic options merging is pretty slow, and none of the + // internal component options needs special treatment. + initInternalComponent(vm, options); + } else { + vm.$options = mergeOptions( + resolveConstructorOptions(vm.constructor), + options || {}, + vm + ); + } + /* istanbul ignore else */ + { + initProxy(vm); + } + // expose real self + vm._self = vm; + initLifecycle(vm); + initEvents(vm); + initRender(vm); + callHook(vm, 'beforeCreate'); + initInjections(vm); // resolve injections before data/props + initState(vm); + initProvide(vm); // resolve provide after data/props + callHook(vm, 'created'); + + /* istanbul ignore if */ + if (config.performance && mark) { + vm._name = formatComponentName(vm, false); + mark(endTag); + measure(("vue " + (vm._name) + " init"), startTag, endTag); + } + + if (vm.$options.el) { + vm.$mount(vm.$options.el); + } + }; +} + +function initInternalComponent (vm, options) { + var opts = vm.$options = Object.create(vm.constructor.options); + // doing this because it's faster than dynamic enumeration. + var parentVnode = options._parentVnode; + opts.parent = options.parent; + opts._parentVnode = parentVnode; + + var vnodeComponentOptions = parentVnode.componentOptions; + opts.propsData = vnodeComponentOptions.propsData; + opts._parentListeners = vnodeComponentOptions.listeners; + opts._renderChildren = vnodeComponentOptions.children; + opts._componentTag = vnodeComponentOptions.tag; + + if (options.render) { + opts.render = options.render; + opts.staticRenderFns = options.staticRenderFns; + } +} + +function resolveConstructorOptions (Ctor) { + var options = Ctor.options; + if (Ctor.super) { + var superOptions = resolveConstructorOptions(Ctor.super); + var cachedSuperOptions = Ctor.superOptions; + if (superOptions !== cachedSuperOptions) { + // super option changed, + // need to resolve new options. + Ctor.superOptions = superOptions; + // check if there are any late-modified/attached options (#4976) + var modifiedOptions = resolveModifiedOptions(Ctor); + // update base extend options + if (modifiedOptions) { + extend(Ctor.extendOptions, modifiedOptions); + } + options = Ctor.options = mergeOptions(superOptions, Ctor.extendOptions); + if (options.name) { + options.components[options.name] = Ctor; + } + } + } + return options +} + +function resolveModifiedOptions (Ctor) { + var modified; + var latest = Ctor.options; + var sealed = Ctor.sealedOptions; + for (var key in latest) { + if (latest[key] !== sealed[key]) { + if (!modified) { modified = {}; } + modified[key] = latest[key]; + } + } + return modified +} + +function Vue (options) { + if (!(this instanceof Vue) + ) { + warn('Vue is a constructor and should be called with the `new` keyword'); + } + this._init(options); +} + +initMixin(Vue); +stateMixin(Vue); +eventsMixin(Vue); +lifecycleMixin(Vue); +renderMixin(Vue); + +/* */ + +function initUse (Vue) { + Vue.use = function (plugin) { + var installedPlugins = (this._installedPlugins || (this._installedPlugins = [])); + if (installedPlugins.indexOf(plugin) > -1) { + return this + } + + // additional parameters + var args = toArray(arguments, 1); + args.unshift(this); + if (typeof plugin.install === 'function') { + plugin.install.apply(plugin, args); + } else if (typeof plugin === 'function') { + plugin.apply(null, args); + } + installedPlugins.push(plugin); + return this + }; +} + +/* */ + +function initMixin$1 (Vue) { + Vue.mixin = function (mixin) { + this.options = mergeOptions(this.options, mixin); + return this + }; +} + +/* */ + +function initExtend (Vue) { + /** + * Each instance constructor, including Vue, has a unique + * cid. This enables us to create wrapped "child + * constructors" for prototypal inheritance and cache them. + */ + Vue.cid = 0; + var cid = 1; + + /** + * Class inheritance + */ + Vue.extend = function (extendOptions) { + extendOptions = extendOptions || {}; + var Super = this; + var SuperId = Super.cid; + var cachedCtors = extendOptions._Ctor || (extendOptions._Ctor = {}); + if (cachedCtors[SuperId]) { + return cachedCtors[SuperId] + } + + var name = extendOptions.name || Super.options.name; + if (name) { + validateComponentName(name); + } + + var Sub = function VueComponent (options) { + this._init(options); + }; + Sub.prototype = Object.create(Super.prototype); + Sub.prototype.constructor = Sub; + Sub.cid = cid++; + Sub.options = mergeOptions( + Super.options, + extendOptions + ); + Sub['super'] = Super; + + // For props and computed properties, we define the proxy getters on + // the Vue instances at extension time, on the extended prototype. This + // avoids Object.defineProperty calls for each instance created. + if (Sub.options.props) { + initProps$1(Sub); + } + if (Sub.options.computed) { + initComputed$1(Sub); + } + + // allow further extension/mixin/plugin usage + Sub.extend = Super.extend; + Sub.mixin = Super.mixin; + Sub.use = Super.use; + + // create asset registers, so extended classes + // can have their private assets too. + ASSET_TYPES.forEach(function (type) { + Sub[type] = Super[type]; + }); + // enable recursive self-lookup + if (name) { + Sub.options.components[name] = Sub; + } + + // keep a reference to the super options at extension time. + // later at instantiation we can check if Super's options have + // been updated. + Sub.superOptions = Super.options; + Sub.extendOptions = extendOptions; + Sub.sealedOptions = extend({}, Sub.options); + + // cache constructor + cachedCtors[SuperId] = Sub; + return Sub + }; +} + +function initProps$1 (Comp) { + var props = Comp.options.props; + for (var key in props) { + proxy(Comp.prototype, "_props", key); + } +} + +function initComputed$1 (Comp) { + var computed = Comp.options.computed; + for (var key in computed) { + defineComputed(Comp.prototype, key, computed[key]); + } +} + +/* */ + +function initAssetRegisters (Vue) { + /** + * Create asset registration methods. + */ + ASSET_TYPES.forEach(function (type) { + Vue[type] = function ( + id, + definition + ) { + if (!definition) { + return this.options[type + 's'][id] + } else { + /* istanbul ignore if */ + if (type === 'component') { + validateComponentName(id); + } + if (type === 'component' && isPlainObject(definition)) { + definition.name = definition.name || id; + definition = this.options._base.extend(definition); + } + if (type === 'directive' && typeof definition === 'function') { + definition = { bind: definition, update: definition }; + } + this.options[type + 's'][id] = definition; + return definition + } + }; + }); +} + +/* */ + + + +function getComponentName (opts) { + return opts && (opts.Ctor.options.name || opts.tag) +} + +function matches (pattern, name) { + if (Array.isArray(pattern)) { + return pattern.indexOf(name) > -1 + } else if (typeof pattern === 'string') { + return pattern.split(',').indexOf(name) > -1 + } else if (isRegExp(pattern)) { + return pattern.test(name) + } + /* istanbul ignore next */ + return false +} + +function pruneCache (keepAliveInstance, filter) { + var cache = keepAliveInstance.cache; + var keys = keepAliveInstance.keys; + var _vnode = keepAliveInstance._vnode; + for (var key in cache) { + var cachedNode = cache[key]; + if (cachedNode) { + var name = getComponentName(cachedNode.componentOptions); + if (name && !filter(name)) { + pruneCacheEntry(cache, key, keys, _vnode); + } + } + } +} + +function pruneCacheEntry ( + cache, + key, + keys, + current +) { + var cached$$1 = cache[key]; + if (cached$$1 && (!current || cached$$1.tag !== current.tag)) { + cached$$1.componentInstance.$destroy(); + } + cache[key] = null; + remove(keys, key); +} + +var patternTypes = [String, RegExp, Array]; + +var KeepAlive = { + name: 'keep-alive', + abstract: true, + + props: { + include: patternTypes, + exclude: patternTypes, + max: [String, Number] + }, + + created: function created () { + this.cache = Object.create(null); + this.keys = []; + }, + + destroyed: function destroyed () { + for (var key in this.cache) { + pruneCacheEntry(this.cache, key, this.keys); + } + }, + + mounted: function mounted () { + var this$1 = this; + + this.$watch('include', function (val) { + pruneCache(this$1, function (name) { return matches(val, name); }); + }); + this.$watch('exclude', function (val) { + pruneCache(this$1, function (name) { return !matches(val, name); }); + }); + }, + + render: function render () { + var slot = this.$slots.default; + var vnode = getFirstComponentChild(slot); + var componentOptions = vnode && vnode.componentOptions; + if (componentOptions) { + // check pattern + var name = getComponentName(componentOptions); + var ref = this; + var include = ref.include; + var exclude = ref.exclude; + if ( + // not included + (include && (!name || !matches(include, name))) || + // excluded + (exclude && name && matches(exclude, name)) + ) { + return vnode + } + + var ref$1 = this; + var cache = ref$1.cache; + var keys = ref$1.keys; + var key = vnode.key == null + // same constructor may get registered as different local components + // so cid alone is not enough (#3269) + ? componentOptions.Ctor.cid + (componentOptions.tag ? ("::" + (componentOptions.tag)) : '') + : vnode.key; + if (cache[key]) { + vnode.componentInstance = cache[key].componentInstance; + // make current key freshest + remove(keys, key); + keys.push(key); + } else { + cache[key] = vnode; + keys.push(key); + // prune oldest entry + if (this.max && keys.length > parseInt(this.max)) { + pruneCacheEntry(cache, keys[0], keys, this._vnode); + } + } + + vnode.data.keepAlive = true; + } + return vnode || (slot && slot[0]) + } +}; + +var builtInComponents = { + KeepAlive: KeepAlive +}; + +/* */ + +function initGlobalAPI (Vue) { + // config + var configDef = {}; + configDef.get = function () { return config; }; + { + configDef.set = function () { + warn( + 'Do not replace the Vue.config object, set individual fields instead.' + ); + }; + } + Object.defineProperty(Vue, 'config', configDef); + + // exposed util methods. + // NOTE: these are not considered part of the public API - avoid relying on + // them unless you are aware of the risk. + Vue.util = { + warn: warn, + extend: extend, + mergeOptions: mergeOptions, + defineReactive: defineReactive$$1 + }; + + Vue.set = set; + Vue.delete = del; + Vue.nextTick = nextTick; + + // 2.6 explicit observable API + Vue.observable = function (obj) { + observe(obj); + return obj + }; + + Vue.options = Object.create(null); + ASSET_TYPES.forEach(function (type) { + Vue.options[type + 's'] = Object.create(null); + }); + + // this is used to identify the "base" constructor to extend all plain-object + // components with in Weex's multi-instance scenarios. + Vue.options._base = Vue; + + extend(Vue.options.components, builtInComponents); + + initUse(Vue); + initMixin$1(Vue); + initExtend(Vue); + initAssetRegisters(Vue); +} + +initGlobalAPI(Vue); + +Object.defineProperty(Vue.prototype, '$isServer', { + get: isServerRendering +}); + +Object.defineProperty(Vue.prototype, '$ssrContext', { + get: function get () { + /* istanbul ignore next */ + return this.$vnode && this.$vnode.ssrContext + } +}); + +// expose FunctionalRenderContext for ssr runtime helper installation +Object.defineProperty(Vue, 'FunctionalRenderContext', { + value: FunctionalRenderContext +}); + +Vue.version = '2.6.10'; + +/* */ + +// these are reserved for web because they are directly compiled away +// during template compilation +var isReservedAttr = makeMap('style,class'); + +// attributes that should be using props for binding +var acceptValue = makeMap('input,textarea,option,select,progress'); +var mustUseProp = function (tag, type, attr) { + return ( + (attr === 'value' && acceptValue(tag)) && type !== 'button' || + (attr === 'selected' && tag === 'option') || + (attr === 'checked' && tag === 'input') || + (attr === 'muted' && tag === 'video') + ) +}; + +var isEnumeratedAttr = makeMap('contenteditable,draggable,spellcheck'); + +var isValidContentEditableValue = makeMap('events,caret,typing,plaintext-only'); + +var convertEnumeratedValue = function (key, value) { + return isFalsyAttrValue(value) || value === 'false' + ? 'false' + // allow arbitrary string value for contenteditable + : key === 'contenteditable' && isValidContentEditableValue(value) + ? value + : 'true' +}; + +var isBooleanAttr = makeMap( + 'allowfullscreen,async,autofocus,autoplay,checked,compact,controls,declare,' + + 'default,defaultchecked,defaultmuted,defaultselected,defer,disabled,' + + 'enabled,formnovalidate,hidden,indeterminate,inert,ismap,itemscope,loop,multiple,' + + 'muted,nohref,noresize,noshade,novalidate,nowrap,open,pauseonexit,readonly,' + + 'required,reversed,scoped,seamless,selected,sortable,translate,' + + 'truespeed,typemustmatch,visible' +); + +var xlinkNS = 'http://www.w3.org/1999/xlink'; + +var isXlink = function (name) { + return name.charAt(5) === ':' && name.slice(0, 5) === 'xlink' +}; + +var getXlinkProp = function (name) { + return isXlink(name) ? name.slice(6, name.length) : '' +}; + +var isFalsyAttrValue = function (val) { + return val == null || val === false +}; + +/* */ + +function genClassForVnode (vnode) { + var data = vnode.data; + var parentNode = vnode; + var childNode = vnode; + while (isDef(childNode.componentInstance)) { + childNode = childNode.componentInstance._vnode; + if (childNode && childNode.data) { + data = mergeClassData(childNode.data, data); + } + } + while (isDef(parentNode = parentNode.parent)) { + if (parentNode && parentNode.data) { + data = mergeClassData(data, parentNode.data); + } + } + return renderClass(data.staticClass, data.class) +} + +function mergeClassData (child, parent) { + return { + staticClass: concat(child.staticClass, parent.staticClass), + class: isDef(child.class) + ? [child.class, parent.class] + : parent.class + } +} + +function renderClass ( + staticClass, + dynamicClass +) { + if (isDef(staticClass) || isDef(dynamicClass)) { + return concat(staticClass, stringifyClass(dynamicClass)) + } + /* istanbul ignore next */ + return '' +} + +function concat (a, b) { + return a ? b ? (a + ' ' + b) : a : (b || '') +} + +function stringifyClass (value) { + if (Array.isArray(value)) { + return stringifyArray(value) + } + if (isObject(value)) { + return stringifyObject(value) + } + if (typeof value === 'string') { + return value + } + /* istanbul ignore next */ + return '' +} + +function stringifyArray (value) { + var res = ''; + var stringified; + for (var i = 0, l = value.length; i < l; i++) { + if (isDef(stringified = stringifyClass(value[i])) && stringified !== '') { + if (res) { res += ' '; } + res += stringified; + } + } + return res +} + +function stringifyObject (value) { + var res = ''; + for (var key in value) { + if (value[key]) { + if (res) { res += ' '; } + res += key; + } + } + return res +} + +/* */ + +var namespaceMap = { + svg: 'http://www.w3.org/2000/svg', + math: 'http://www.w3.org/1998/Math/MathML' +}; + +var isHTMLTag = makeMap( + 'html,body,base,head,link,meta,style,title,' + + 'address,article,aside,footer,header,h1,h2,h3,h4,h5,h6,hgroup,nav,section,' + + 'div,dd,dl,dt,figcaption,figure,picture,hr,img,li,main,ol,p,pre,ul,' + + 'a,b,abbr,bdi,bdo,br,cite,code,data,dfn,em,i,kbd,mark,q,rp,rt,rtc,ruby,' + + 's,samp,small,span,strong,sub,sup,time,u,var,wbr,area,audio,map,track,video,' + + 'embed,object,param,source,canvas,script,noscript,del,ins,' + + 'caption,col,colgroup,table,thead,tbody,td,th,tr,' + + 'button,datalist,fieldset,form,input,label,legend,meter,optgroup,option,' + + 'output,progress,select,textarea,' + + 'details,dialog,menu,menuitem,summary,' + + 'content,element,shadow,template,blockquote,iframe,tfoot' +); + +// this map is intentionally selective, only covering SVG elements that may +// contain child elements. +var isSVG = makeMap( + 'svg,animate,circle,clippath,cursor,defs,desc,ellipse,filter,font-face,' + + 'foreignObject,g,glyph,image,line,marker,mask,missing-glyph,path,pattern,' + + 'polygon,polyline,rect,switch,symbol,text,textpath,tspan,use,view', + true +); + +var isPreTag = function (tag) { return tag === 'pre'; }; + +var isReservedTag = function (tag) { + return isHTMLTag(tag) || isSVG(tag) +}; + +function getTagNamespace (tag) { + if (isSVG(tag)) { + return 'svg' + } + // basic support for MathML + // note it doesn't support other MathML elements being component roots + if (tag === 'math') { + return 'math' + } +} + +var unknownElementCache = Object.create(null); +function isUnknownElement (tag) { + /* istanbul ignore if */ + if (!inBrowser) { + return true + } + if (isReservedTag(tag)) { + return false + } + tag = tag.toLowerCase(); + /* istanbul ignore if */ + if (unknownElementCache[tag] != null) { + return unknownElementCache[tag] + } + var el = document.createElement(tag); + if (tag.indexOf('-') > -1) { + // http://stackoverflow.com/a/28210364/1070244 + return (unknownElementCache[tag] = ( + el.constructor === window.HTMLUnknownElement || + el.constructor === window.HTMLElement + )) + } else { + return (unknownElementCache[tag] = /HTMLUnknownElement/.test(el.toString())) + } +} + +var isTextInputType = makeMap('text,number,password,search,email,tel,url'); + +/* */ + +/** + * Query an element selector if it's not an element already. + */ +function query (el) { + if (typeof el === 'string') { + var selected = document.querySelector(el); + if (!selected) { + warn( + 'Cannot find element: ' + el + ); + return document.createElement('div') + } + return selected + } else { + return el + } +} + +/* */ + +function createElement$1 (tagName, vnode) { + var elm = document.createElement(tagName); + if (tagName !== 'select') { + return elm + } + // false or null will remove the attribute but undefined will not + if (vnode.data && vnode.data.attrs && vnode.data.attrs.multiple !== undefined) { + elm.setAttribute('multiple', 'multiple'); + } + return elm +} + +function createElementNS (namespace, tagName) { + return document.createElementNS(namespaceMap[namespace], tagName) +} + +function createTextNode (text) { + return document.createTextNode(text) +} + +function createComment (text) { + return document.createComment(text) +} + +function insertBefore (parentNode, newNode, referenceNode) { + parentNode.insertBefore(newNode, referenceNode); +} + +function removeChild (node, child) { + node.removeChild(child); +} + +function appendChild (node, child) { + node.appendChild(child); +} + +function parentNode (node) { + return node.parentNode +} + +function nextSibling (node) { + return node.nextSibling +} + +function tagName (node) { + return node.tagName +} + +function setTextContent (node, text) { + node.textContent = text; +} + +function setStyleScope (node, scopeId) { + node.setAttribute(scopeId, ''); +} + +var nodeOps = /*#__PURE__*/Object.freeze({ + createElement: createElement$1, + createElementNS: createElementNS, + createTextNode: createTextNode, + createComment: createComment, + insertBefore: insertBefore, + removeChild: removeChild, + appendChild: appendChild, + parentNode: parentNode, + nextSibling: nextSibling, + tagName: tagName, + setTextContent: setTextContent, + setStyleScope: setStyleScope +}); + +/* */ + +var ref = { + create: function create (_, vnode) { + registerRef(vnode); + }, + update: function update (oldVnode, vnode) { + if (oldVnode.data.ref !== vnode.data.ref) { + registerRef(oldVnode, true); + registerRef(vnode); + } + }, + destroy: function destroy (vnode) { + registerRef(vnode, true); + } +}; + +function registerRef (vnode, isRemoval) { + var key = vnode.data.ref; + if (!isDef(key)) { return } + + var vm = vnode.context; + var ref = vnode.componentInstance || vnode.elm; + var refs = vm.$refs; + if (isRemoval) { + if (Array.isArray(refs[key])) { + remove(refs[key], ref); + } else if (refs[key] === ref) { + refs[key] = undefined; + } + } else { + if (vnode.data.refInFor) { + if (!Array.isArray(refs[key])) { + refs[key] = [ref]; + } else if (refs[key].indexOf(ref) < 0) { + // $flow-disable-line + refs[key].push(ref); + } + } else { + refs[key] = ref; + } + } +} + +/** + * Virtual DOM patching algorithm based on Snabbdom by + * Simon Friis Vindum (@paldepind) + * Licensed under the MIT License + * https://github.com/paldepind/snabbdom/blob/master/LICENSE + * + * modified by Evan You (@yyx990803) + * + * Not type-checking this because this file is perf-critical and the cost + * of making flow understand it is not worth it. + */ + +var emptyNode = new VNode('', {}, []); + +var hooks = ['create', 'activate', 'update', 'remove', 'destroy']; + +function sameVnode (a, b) { + return ( + a.key === b.key && ( + ( + a.tag === b.tag && + a.isComment === b.isComment && + isDef(a.data) === isDef(b.data) && + sameInputType(a, b) + ) || ( + isTrue(a.isAsyncPlaceholder) && + a.asyncFactory === b.asyncFactory && + isUndef(b.asyncFactory.error) + ) + ) + ) +} + +function sameInputType (a, b) { + if (a.tag !== 'input') { return true } + var i; + var typeA = isDef(i = a.data) && isDef(i = i.attrs) && i.type; + var typeB = isDef(i = b.data) && isDef(i = i.attrs) && i.type; + return typeA === typeB || isTextInputType(typeA) && isTextInputType(typeB) +} + +function createKeyToOldIdx (children, beginIdx, endIdx) { + var i, key; + var map = {}; + for (i = beginIdx; i <= endIdx; ++i) { + key = children[i].key; + if (isDef(key)) { map[key] = i; } + } + return map +} + +function createPatchFunction (backend) { + var i, j; + var cbs = {}; + + var modules = backend.modules; + var nodeOps = backend.nodeOps; + + for (i = 0; i < hooks.length; ++i) { + cbs[hooks[i]] = []; + for (j = 0; j < modules.length; ++j) { + if (isDef(modules[j][hooks[i]])) { + cbs[hooks[i]].push(modules[j][hooks[i]]); + } + } + } + + function emptyNodeAt (elm) { + return new VNode(nodeOps.tagName(elm).toLowerCase(), {}, [], undefined, elm) + } + + function createRmCb (childElm, listeners) { + function remove$$1 () { + if (--remove$$1.listeners === 0) { + removeNode(childElm); + } + } + remove$$1.listeners = listeners; + return remove$$1 + } + + function removeNode (el) { + var parent = nodeOps.parentNode(el); + // element may have already been removed due to v-html / v-text + if (isDef(parent)) { + nodeOps.removeChild(parent, el); + } + } + + function isUnknownElement$$1 (vnode, inVPre) { + return ( + !inVPre && + !vnode.ns && + !( + config.ignoredElements.length && + config.ignoredElements.some(function (ignore) { + return isRegExp(ignore) + ? ignore.test(vnode.tag) + : ignore === vnode.tag + }) + ) && + config.isUnknownElement(vnode.tag) + ) + } + + var creatingElmInVPre = 0; + + function createElm ( + vnode, + insertedVnodeQueue, + parentElm, + refElm, + nested, + ownerArray, + index + ) { + if (isDef(vnode.elm) && isDef(ownerArray)) { + // This vnode was used in a previous render! + // now it's used as a new node, overwriting its elm would cause + // potential patch errors down the road when it's used as an insertion + // reference node. Instead, we clone the node on-demand before creating + // associated DOM element for it. + vnode = ownerArray[index] = cloneVNode(vnode); + } + + vnode.isRootInsert = !nested; // for transition enter check + if (createComponent(vnode, insertedVnodeQueue, parentElm, refElm)) { + return + } + + var data = vnode.data; + var children = vnode.children; + var tag = vnode.tag; + if (isDef(tag)) { + { + if (data && data.pre) { + creatingElmInVPre++; + } + if (isUnknownElement$$1(vnode, creatingElmInVPre)) { + warn( + 'Unknown custom element: <' + tag + '> - did you ' + + 'register the component correctly? For recursive components, ' + + 'make sure to provide the "name" option.', + vnode.context + ); + } + } + + vnode.elm = vnode.ns + ? nodeOps.createElementNS(vnode.ns, tag) + : nodeOps.createElement(tag, vnode); + setScope(vnode); + + /* istanbul ignore if */ + { + createChildren(vnode, children, insertedVnodeQueue); + if (isDef(data)) { + invokeCreateHooks(vnode, insertedVnodeQueue); + } + insert(parentElm, vnode.elm, refElm); + } + + if (data && data.pre) { + creatingElmInVPre--; + } + } else if (isTrue(vnode.isComment)) { + vnode.elm = nodeOps.createComment(vnode.text); + insert(parentElm, vnode.elm, refElm); + } else { + vnode.elm = nodeOps.createTextNode(vnode.text); + insert(parentElm, vnode.elm, refElm); + } + } + + function createComponent (vnode, insertedVnodeQueue, parentElm, refElm) { + var i = vnode.data; + if (isDef(i)) { + var isReactivated = isDef(vnode.componentInstance) && i.keepAlive; + if (isDef(i = i.hook) && isDef(i = i.init)) { + i(vnode, false /* hydrating */); + } + // after calling the init hook, if the vnode is a child component + // it should've created a child instance and mounted it. the child + // component also has set the placeholder vnode's elm. + // in that case we can just return the element and be done. + if (isDef(vnode.componentInstance)) { + initComponent(vnode, insertedVnodeQueue); + insert(parentElm, vnode.elm, refElm); + if (isTrue(isReactivated)) { + reactivateComponent(vnode, insertedVnodeQueue, parentElm, refElm); + } + return true + } + } + } + + function initComponent (vnode, insertedVnodeQueue) { + if (isDef(vnode.data.pendingInsert)) { + insertedVnodeQueue.push.apply(insertedVnodeQueue, vnode.data.pendingInsert); + vnode.data.pendingInsert = null; + } + vnode.elm = vnode.componentInstance.$el; + if (isPatchable(vnode)) { + invokeCreateHooks(vnode, insertedVnodeQueue); + setScope(vnode); + } else { + // empty component root. + // skip all element-related modules except for ref (#3455) + registerRef(vnode); + // make sure to invoke the insert hook + insertedVnodeQueue.push(vnode); + } + } + + function reactivateComponent (vnode, insertedVnodeQueue, parentElm, refElm) { + var i; + // hack for #4339: a reactivated component with inner transition + // does not trigger because the inner node's created hooks are not called + // again. It's not ideal to involve module-specific logic in here but + // there doesn't seem to be a better way to do it. + var innerNode = vnode; + while (innerNode.componentInstance) { + innerNode = innerNode.componentInstance._vnode; + if (isDef(i = innerNode.data) && isDef(i = i.transition)) { + for (i = 0; i < cbs.activate.length; ++i) { + cbs.activate[i](emptyNode, innerNode); + } + insertedVnodeQueue.push(innerNode); + break + } + } + // unlike a newly created component, + // a reactivated keep-alive component doesn't insert itself + insert(parentElm, vnode.elm, refElm); + } + + function insert (parent, elm, ref$$1) { + if (isDef(parent)) { + if (isDef(ref$$1)) { + if (nodeOps.parentNode(ref$$1) === parent) { + nodeOps.insertBefore(parent, elm, ref$$1); + } + } else { + nodeOps.appendChild(parent, elm); + } + } + } + + function createChildren (vnode, children, insertedVnodeQueue) { + if (Array.isArray(children)) { + { + checkDuplicateKeys(children); + } + for (var i = 0; i < children.length; ++i) { + createElm(children[i], insertedVnodeQueue, vnode.elm, null, true, children, i); + } + } else if (isPrimitive(vnode.text)) { + nodeOps.appendChild(vnode.elm, nodeOps.createTextNode(String(vnode.text))); + } + } + + function isPatchable (vnode) { + while (vnode.componentInstance) { + vnode = vnode.componentInstance._vnode; + } + return isDef(vnode.tag) + } + + function invokeCreateHooks (vnode, insertedVnodeQueue) { + for (var i$1 = 0; i$1 < cbs.create.length; ++i$1) { + cbs.create[i$1](emptyNode, vnode); + } + i = vnode.data.hook; // Reuse variable + if (isDef(i)) { + if (isDef(i.create)) { i.create(emptyNode, vnode); } + if (isDef(i.insert)) { insertedVnodeQueue.push(vnode); } + } + } + + // set scope id attribute for scoped CSS. + // this is implemented as a special case to avoid the overhead + // of going through the normal attribute patching process. + function setScope (vnode) { + var i; + if (isDef(i = vnode.fnScopeId)) { + nodeOps.setStyleScope(vnode.elm, i); + } else { + var ancestor = vnode; + while (ancestor) { + if (isDef(i = ancestor.context) && isDef(i = i.$options._scopeId)) { + nodeOps.setStyleScope(vnode.elm, i); + } + ancestor = ancestor.parent; + } + } + // for slot content they should also get the scopeId from the host instance. + if (isDef(i = activeInstance) && + i !== vnode.context && + i !== vnode.fnContext && + isDef(i = i.$options._scopeId) + ) { + nodeOps.setStyleScope(vnode.elm, i); + } + } + + function addVnodes (parentElm, refElm, vnodes, startIdx, endIdx, insertedVnodeQueue) { + for (; startIdx <= endIdx; ++startIdx) { + createElm(vnodes[startIdx], insertedVnodeQueue, parentElm, refElm, false, vnodes, startIdx); + } + } + + function invokeDestroyHook (vnode) { + var i, j; + var data = vnode.data; + if (isDef(data)) { + if (isDef(i = data.hook) && isDef(i = i.destroy)) { i(vnode); } + for (i = 0; i < cbs.destroy.length; ++i) { cbs.destroy[i](vnode); } + } + if (isDef(i = vnode.children)) { + for (j = 0; j < vnode.children.length; ++j) { + invokeDestroyHook(vnode.children[j]); + } + } + } + + function removeVnodes (parentElm, vnodes, startIdx, endIdx) { + for (; startIdx <= endIdx; ++startIdx) { + var ch = vnodes[startIdx]; + if (isDef(ch)) { + if (isDef(ch.tag)) { + removeAndInvokeRemoveHook(ch); + invokeDestroyHook(ch); + } else { // Text node + removeNode(ch.elm); + } + } + } + } + + function removeAndInvokeRemoveHook (vnode, rm) { + if (isDef(rm) || isDef(vnode.data)) { + var i; + var listeners = cbs.remove.length + 1; + if (isDef(rm)) { + // we have a recursively passed down rm callback + // increase the listeners count + rm.listeners += listeners; + } else { + // directly removing + rm = createRmCb(vnode.elm, listeners); + } + // recursively invoke hooks on child component root node + if (isDef(i = vnode.componentInstance) && isDef(i = i._vnode) && isDef(i.data)) { + removeAndInvokeRemoveHook(i, rm); + } + for (i = 0; i < cbs.remove.length; ++i) { + cbs.remove[i](vnode, rm); + } + if (isDef(i = vnode.data.hook) && isDef(i = i.remove)) { + i(vnode, rm); + } else { + rm(); + } + } else { + removeNode(vnode.elm); + } + } + + function updateChildren (parentElm, oldCh, newCh, insertedVnodeQueue, removeOnly) { + var oldStartIdx = 0; + var newStartIdx = 0; + var oldEndIdx = oldCh.length - 1; + var oldStartVnode = oldCh[0]; + var oldEndVnode = oldCh[oldEndIdx]; + var newEndIdx = newCh.length - 1; + var newStartVnode = newCh[0]; + var newEndVnode = newCh[newEndIdx]; + var oldKeyToIdx, idxInOld, vnodeToMove, refElm; + + // removeOnly is a special flag used only by <transition-group> + // to ensure removed elements stay in correct relative positions + // during leaving transitions + var canMove = !removeOnly; + + { + checkDuplicateKeys(newCh); + } + + while (oldStartIdx <= oldEndIdx && newStartIdx <= newEndIdx) { + if (isUndef(oldStartVnode)) { + oldStartVnode = oldCh[++oldStartIdx]; // Vnode has been moved left + } else if (isUndef(oldEndVnode)) { + oldEndVnode = oldCh[--oldEndIdx]; + } else if (sameVnode(oldStartVnode, newStartVnode)) { + patchVnode(oldStartVnode, newStartVnode, insertedVnodeQueue, newCh, newStartIdx); + oldStartVnode = oldCh[++oldStartIdx]; + newStartVnode = newCh[++newStartIdx]; + } else if (sameVnode(oldEndVnode, newEndVnode)) { + patchVnode(oldEndVnode, newEndVnode, insertedVnodeQueue, newCh, newEndIdx); + oldEndVnode = oldCh[--oldEndIdx]; + newEndVnode = newCh[--newEndIdx]; + } else if (sameVnode(oldStartVnode, newEndVnode)) { // Vnode moved right + patchVnode(oldStartVnode, newEndVnode, insertedVnodeQueue, newCh, newEndIdx); + canMove && nodeOps.insertBefore(parentElm, oldStartVnode.elm, nodeOps.nextSibling(oldEndVnode.elm)); + oldStartVnode = oldCh[++oldStartIdx]; + newEndVnode = newCh[--newEndIdx]; + } else if (sameVnode(oldEndVnode, newStartVnode)) { // Vnode moved left + patchVnode(oldEndVnode, newStartVnode, insertedVnodeQueue, newCh, newStartIdx); + canMove && nodeOps.insertBefore(parentElm, oldEndVnode.elm, oldStartVnode.elm); + oldEndVnode = oldCh[--oldEndIdx]; + newStartVnode = newCh[++newStartIdx]; + } else { + if (isUndef(oldKeyToIdx)) { oldKeyToIdx = createKeyToOldIdx(oldCh, oldStartIdx, oldEndIdx); } + idxInOld = isDef(newStartVnode.key) + ? oldKeyToIdx[newStartVnode.key] + : findIdxInOld(newStartVnode, oldCh, oldStartIdx, oldEndIdx); + if (isUndef(idxInOld)) { // New element + createElm(newStartVnode, insertedVnodeQueue, parentElm, oldStartVnode.elm, false, newCh, newStartIdx); + } else { + vnodeToMove = oldCh[idxInOld]; + if (sameVnode(vnodeToMove, newStartVnode)) { + patchVnode(vnodeToMove, newStartVnode, insertedVnodeQueue, newCh, newStartIdx); + oldCh[idxInOld] = undefined; + canMove && nodeOps.insertBefore(parentElm, vnodeToMove.elm, oldStartVnode.elm); + } else { + // same key but different element. treat as new element + createElm(newStartVnode, insertedVnodeQueue, parentElm, oldStartVnode.elm, false, newCh, newStartIdx); + } + } + newStartVnode = newCh[++newStartIdx]; + } + } + if (oldStartIdx > oldEndIdx) { + refElm = isUndef(newCh[newEndIdx + 1]) ? null : newCh[newEndIdx + 1].elm; + addVnodes(parentElm, refElm, newCh, newStartIdx, newEndIdx, insertedVnodeQueue); + } else if (newStartIdx > newEndIdx) { + removeVnodes(parentElm, oldCh, oldStartIdx, oldEndIdx); + } + } + + function checkDuplicateKeys (children) { + var seenKeys = {}; + for (var i = 0; i < children.length; i++) { + var vnode = children[i]; + var key = vnode.key; + if (isDef(key)) { + if (seenKeys[key]) { + warn( + ("Duplicate keys detected: '" + key + "'. This may cause an update error."), + vnode.context + ); + } else { + seenKeys[key] = true; + } + } + } + } + + function findIdxInOld (node, oldCh, start, end) { + for (var i = start; i < end; i++) { + var c = oldCh[i]; + if (isDef(c) && sameVnode(node, c)) { return i } + } + } + + function patchVnode ( + oldVnode, + vnode, + insertedVnodeQueue, + ownerArray, + index, + removeOnly + ) { + if (oldVnode === vnode) { + return + } + + if (isDef(vnode.elm) && isDef(ownerArray)) { + // clone reused vnode + vnode = ownerArray[index] = cloneVNode(vnode); + } + + var elm = vnode.elm = oldVnode.elm; + + if (isTrue(oldVnode.isAsyncPlaceholder)) { + if (isDef(vnode.asyncFactory.resolved)) { + hydrate(oldVnode.elm, vnode, insertedVnodeQueue); + } else { + vnode.isAsyncPlaceholder = true; + } + return + } + + // reuse element for static trees. + // note we only do this if the vnode is cloned - + // if the new node is not cloned it means the render functions have been + // reset by the hot-reload-api and we need to do a proper re-render. + if (isTrue(vnode.isStatic) && + isTrue(oldVnode.isStatic) && + vnode.key === oldVnode.key && + (isTrue(vnode.isCloned) || isTrue(vnode.isOnce)) + ) { + vnode.componentInstance = oldVnode.componentInstance; + return + } + + var i; + var data = vnode.data; + if (isDef(data) && isDef(i = data.hook) && isDef(i = i.prepatch)) { + i(oldVnode, vnode); + } + + var oldCh = oldVnode.children; + var ch = vnode.children; + if (isDef(data) && isPatchable(vnode)) { + for (i = 0; i < cbs.update.length; ++i) { cbs.update[i](oldVnode, vnode); } + if (isDef(i = data.hook) && isDef(i = i.update)) { i(oldVnode, vnode); } + } + if (isUndef(vnode.text)) { + if (isDef(oldCh) && isDef(ch)) { + if (oldCh !== ch) { updateChildren(elm, oldCh, ch, insertedVnodeQueue, removeOnly); } + } else if (isDef(ch)) { + { + checkDuplicateKeys(ch); + } + if (isDef(oldVnode.text)) { nodeOps.setTextContent(elm, ''); } + addVnodes(elm, null, ch, 0, ch.length - 1, insertedVnodeQueue); + } else if (isDef(oldCh)) { + removeVnodes(elm, oldCh, 0, oldCh.length - 1); + } else if (isDef(oldVnode.text)) { + nodeOps.setTextContent(elm, ''); + } + } else if (oldVnode.text !== vnode.text) { + nodeOps.setTextContent(elm, vnode.text); + } + if (isDef(data)) { + if (isDef(i = data.hook) && isDef(i = i.postpatch)) { i(oldVnode, vnode); } + } + } + + function invokeInsertHook (vnode, queue, initial) { + // delay insert hooks for component root nodes, invoke them after the + // element is really inserted + if (isTrue(initial) && isDef(vnode.parent)) { + vnode.parent.data.pendingInsert = queue; + } else { + for (var i = 0; i < queue.length; ++i) { + queue[i].data.hook.insert(queue[i]); + } + } + } + + var hydrationBailed = false; + // list of modules that can skip create hook during hydration because they + // are already rendered on the client or has no need for initialization + // Note: style is excluded because it relies on initial clone for future + // deep updates (#7063). + var isRenderedModule = makeMap('attrs,class,staticClass,staticStyle,key'); + + // Note: this is a browser-only function so we can assume elms are DOM nodes. + function hydrate (elm, vnode, insertedVnodeQueue, inVPre) { + var i; + var tag = vnode.tag; + var data = vnode.data; + var children = vnode.children; + inVPre = inVPre || (data && data.pre); + vnode.elm = elm; + + if (isTrue(vnode.isComment) && isDef(vnode.asyncFactory)) { + vnode.isAsyncPlaceholder = true; + return true + } + // assert node match + { + if (!assertNodeMatch(elm, vnode, inVPre)) { + return false + } + } + if (isDef(data)) { + if (isDef(i = data.hook) && isDef(i = i.init)) { i(vnode, true /* hydrating */); } + if (isDef(i = vnode.componentInstance)) { + // child component. it should have hydrated its own tree. + initComponent(vnode, insertedVnodeQueue); + return true + } + } + if (isDef(tag)) { + if (isDef(children)) { + // empty element, allow client to pick up and populate children + if (!elm.hasChildNodes()) { + createChildren(vnode, children, insertedVnodeQueue); + } else { + // v-html and domProps: innerHTML + if (isDef(i = data) && isDef(i = i.domProps) && isDef(i = i.innerHTML)) { + if (i !== elm.innerHTML) { + /* istanbul ignore if */ + if (typeof console !== 'undefined' && + !hydrationBailed + ) { + hydrationBailed = true; + console.warn('Parent: ', elm); + console.warn('server innerHTML: ', i); + console.warn('client innerHTML: ', elm.innerHTML); + } + return false + } + } else { + // iterate and compare children lists + var childrenMatch = true; + var childNode = elm.firstChild; + for (var i$1 = 0; i$1 < children.length; i$1++) { + if (!childNode || !hydrate(childNode, children[i$1], insertedVnodeQueue, inVPre)) { + childrenMatch = false; + break + } + childNode = childNode.nextSibling; + } + // if childNode is not null, it means the actual childNodes list is + // longer than the virtual children list. + if (!childrenMatch || childNode) { + /* istanbul ignore if */ + if (typeof console !== 'undefined' && + !hydrationBailed + ) { + hydrationBailed = true; + console.warn('Parent: ', elm); + console.warn('Mismatching childNodes vs. VNodes: ', elm.childNodes, children); + } + return false + } + } + } + } + if (isDef(data)) { + var fullInvoke = false; + for (var key in data) { + if (!isRenderedModule(key)) { + fullInvoke = true; + invokeCreateHooks(vnode, insertedVnodeQueue); + break + } + } + if (!fullInvoke && data['class']) { + // ensure collecting deps for deep class bindings for future updates + traverse(data['class']); + } + } + } else if (elm.data !== vnode.text) { + elm.data = vnode.text; + } + return true + } + + function assertNodeMatch (node, vnode, inVPre) { + if (isDef(vnode.tag)) { + return vnode.tag.indexOf('vue-component') === 0 || ( + !isUnknownElement$$1(vnode, inVPre) && + vnode.tag.toLowerCase() === (node.tagName && node.tagName.toLowerCase()) + ) + } else { + return node.nodeType === (vnode.isComment ? 8 : 3) + } + } + + return function patch (oldVnode, vnode, hydrating, removeOnly) { + if (isUndef(vnode)) { + if (isDef(oldVnode)) { invokeDestroyHook(oldVnode); } + return + } + + var isInitialPatch = false; + var insertedVnodeQueue = []; + + if (isUndef(oldVnode)) { + // empty mount (likely as component), create new root element + isInitialPatch = true; + createElm(vnode, insertedVnodeQueue); + } else { + var isRealElement = isDef(oldVnode.nodeType); + if (!isRealElement && sameVnode(oldVnode, vnode)) { + // patch existing root node + patchVnode(oldVnode, vnode, insertedVnodeQueue, null, null, removeOnly); + } else { + if (isRealElement) { + // mounting to a real element + // check if this is server-rendered content and if we can perform + // a successful hydration. + if (oldVnode.nodeType === 1 && oldVnode.hasAttribute(SSR_ATTR)) { + oldVnode.removeAttribute(SSR_ATTR); + hydrating = true; + } + if (isTrue(hydrating)) { + if (hydrate(oldVnode, vnode, insertedVnodeQueue)) { + invokeInsertHook(vnode, insertedVnodeQueue, true); + return oldVnode + } else { + warn( + 'The client-side rendered virtual DOM tree is not matching ' + + 'server-rendered content. This is likely caused by incorrect ' + + 'HTML markup, for example nesting block-level elements inside ' + + '<p>, or missing <tbody>. Bailing hydration and performing ' + + 'full client-side render.' + ); + } + } + // either not server-rendered, or hydration failed. + // create an empty node and replace it + oldVnode = emptyNodeAt(oldVnode); + } + + // replacing existing element + var oldElm = oldVnode.elm; + var parentElm = nodeOps.parentNode(oldElm); + + // create new node + createElm( + vnode, + insertedVnodeQueue, + // extremely rare edge case: do not insert if old element is in a + // leaving transition. Only happens when combining transition + + // keep-alive + HOCs. (#4590) + oldElm._leaveCb ? null : parentElm, + nodeOps.nextSibling(oldElm) + ); + + // update parent placeholder node element, recursively + if (isDef(vnode.parent)) { + var ancestor = vnode.parent; + var patchable = isPatchable(vnode); + while (ancestor) { + for (var i = 0; i < cbs.destroy.length; ++i) { + cbs.destroy[i](ancestor); + } + ancestor.elm = vnode.elm; + if (patchable) { + for (var i$1 = 0; i$1 < cbs.create.length; ++i$1) { + cbs.create[i$1](emptyNode, ancestor); + } + // #6513 + // invoke insert hooks that may have been merged by create hooks. + // e.g. for directives that uses the "inserted" hook. + var insert = ancestor.data.hook.insert; + if (insert.merged) { + // start at index 1 to avoid re-invoking component mounted hook + for (var i$2 = 1; i$2 < insert.fns.length; i$2++) { + insert.fns[i$2](); + } + } + } else { + registerRef(ancestor); + } + ancestor = ancestor.parent; + } + } + + // destroy old node + if (isDef(parentElm)) { + removeVnodes(parentElm, [oldVnode], 0, 0); + } else if (isDef(oldVnode.tag)) { + invokeDestroyHook(oldVnode); + } + } + } + + invokeInsertHook(vnode, insertedVnodeQueue, isInitialPatch); + return vnode.elm + } +} + +/* */ + +var directives = { + create: updateDirectives, + update: updateDirectives, + destroy: function unbindDirectives (vnode) { + updateDirectives(vnode, emptyNode); + } +}; + +function updateDirectives (oldVnode, vnode) { + if (oldVnode.data.directives || vnode.data.directives) { + _update(oldVnode, vnode); + } +} + +function _update (oldVnode, vnode) { + var isCreate = oldVnode === emptyNode; + var isDestroy = vnode === emptyNode; + var oldDirs = normalizeDirectives$1(oldVnode.data.directives, oldVnode.context); + var newDirs = normalizeDirectives$1(vnode.data.directives, vnode.context); + + var dirsWithInsert = []; + var dirsWithPostpatch = []; + + var key, oldDir, dir; + for (key in newDirs) { + oldDir = oldDirs[key]; + dir = newDirs[key]; + if (!oldDir) { + // new directive, bind + callHook$1(dir, 'bind', vnode, oldVnode); + if (dir.def && dir.def.inserted) { + dirsWithInsert.push(dir); + } + } else { + // existing directive, update + dir.oldValue = oldDir.value; + dir.oldArg = oldDir.arg; + callHook$1(dir, 'update', vnode, oldVnode); + if (dir.def && dir.def.componentUpdated) { + dirsWithPostpatch.push(dir); + } + } + } + + if (dirsWithInsert.length) { + var callInsert = function () { + for (var i = 0; i < dirsWithInsert.length; i++) { + callHook$1(dirsWithInsert[i], 'inserted', vnode, oldVnode); + } + }; + if (isCreate) { + mergeVNodeHook(vnode, 'insert', callInsert); + } else { + callInsert(); + } + } + + if (dirsWithPostpatch.length) { + mergeVNodeHook(vnode, 'postpatch', function () { + for (var i = 0; i < dirsWithPostpatch.length; i++) { + callHook$1(dirsWithPostpatch[i], 'componentUpdated', vnode, oldVnode); + } + }); + } + + if (!isCreate) { + for (key in oldDirs) { + if (!newDirs[key]) { + // no longer present, unbind + callHook$1(oldDirs[key], 'unbind', oldVnode, oldVnode, isDestroy); + } + } + } +} + +var emptyModifiers = Object.create(null); + +function normalizeDirectives$1 ( + dirs, + vm +) { + var res = Object.create(null); + if (!dirs) { + // $flow-disable-line + return res + } + var i, dir; + for (i = 0; i < dirs.length; i++) { + dir = dirs[i]; + if (!dir.modifiers) { + // $flow-disable-line + dir.modifiers = emptyModifiers; + } + res[getRawDirName(dir)] = dir; + dir.def = resolveAsset(vm.$options, 'directives', dir.name, true); + } + // $flow-disable-line + return res +} + +function getRawDirName (dir) { + return dir.rawName || ((dir.name) + "." + (Object.keys(dir.modifiers || {}).join('.'))) +} + +function callHook$1 (dir, hook, vnode, oldVnode, isDestroy) { + var fn = dir.def && dir.def[hook]; + if (fn) { + try { + fn(vnode.elm, dir, vnode, oldVnode, isDestroy); + } catch (e) { + handleError(e, vnode.context, ("directive " + (dir.name) + " " + hook + " hook")); + } + } +} + +var baseModules = [ + ref, + directives +]; + +/* */ + +function updateAttrs (oldVnode, vnode) { + var opts = vnode.componentOptions; + if (isDef(opts) && opts.Ctor.options.inheritAttrs === false) { + return + } + if (isUndef(oldVnode.data.attrs) && isUndef(vnode.data.attrs)) { + return + } + var key, cur, old; + var elm = vnode.elm; + var oldAttrs = oldVnode.data.attrs || {}; + var attrs = vnode.data.attrs || {}; + // clone observed objects, as the user probably wants to mutate it + if (isDef(attrs.__ob__)) { + attrs = vnode.data.attrs = extend({}, attrs); + } + + for (key in attrs) { + cur = attrs[key]; + old = oldAttrs[key]; + if (old !== cur) { + setAttr(elm, key, cur); + } + } + // #4391: in IE9, setting type can reset value for input[type=radio] + // #6666: IE/Edge forces progress value down to 1 before setting a max + /* istanbul ignore if */ + if ((isIE || isEdge) && attrs.value !== oldAttrs.value) { + setAttr(elm, 'value', attrs.value); + } + for (key in oldAttrs) { + if (isUndef(attrs[key])) { + if (isXlink(key)) { + elm.removeAttributeNS(xlinkNS, getXlinkProp(key)); + } else if (!isEnumeratedAttr(key)) { + elm.removeAttribute(key); + } + } + } +} + +function setAttr (el, key, value) { + if (el.tagName.indexOf('-') > -1) { + baseSetAttr(el, key, value); + } else if (isBooleanAttr(key)) { + // set attribute for blank value + // e.g. <option disabled>Select one</option> + if (isFalsyAttrValue(value)) { + el.removeAttribute(key); + } else { + // technically allowfullscreen is a boolean attribute for <iframe>, + // but Flash expects a value of "true" when used on <embed> tag + value = key === 'allowfullscreen' && el.tagName === 'EMBED' + ? 'true' + : key; + el.setAttribute(key, value); + } + } else if (isEnumeratedAttr(key)) { + el.setAttribute(key, convertEnumeratedValue(key, value)); + } else if (isXlink(key)) { + if (isFalsyAttrValue(value)) { + el.removeAttributeNS(xlinkNS, getXlinkProp(key)); + } else { + el.setAttributeNS(xlinkNS, key, value); + } + } else { + baseSetAttr(el, key, value); + } +} + +function baseSetAttr (el, key, value) { + if (isFalsyAttrValue(value)) { + el.removeAttribute(key); + } else { + // #7138: IE10 & 11 fires input event when setting placeholder on + // <textarea>... block the first input event and remove the blocker + // immediately. + /* istanbul ignore if */ + if ( + isIE && !isIE9 && + el.tagName === 'TEXTAREA' && + key === 'placeholder' && value !== '' && !el.__ieph + ) { + var blocker = function (e) { + e.stopImmediatePropagation(); + el.removeEventListener('input', blocker); + }; + el.addEventListener('input', blocker); + // $flow-disable-line + el.__ieph = true; /* IE placeholder patched */ + } + el.setAttribute(key, value); + } +} + +var attrs = { + create: updateAttrs, + update: updateAttrs +}; + +/* */ + +function updateClass (oldVnode, vnode) { + var el = vnode.elm; + var data = vnode.data; + var oldData = oldVnode.data; + if ( + isUndef(data.staticClass) && + isUndef(data.class) && ( + isUndef(oldData) || ( + isUndef(oldData.staticClass) && + isUndef(oldData.class) + ) + ) + ) { + return + } + + var cls = genClassForVnode(vnode); + + // handle transition classes + var transitionClass = el._transitionClasses; + if (isDef(transitionClass)) { + cls = concat(cls, stringifyClass(transitionClass)); + } + + // set the class + if (cls !== el._prevClass) { + el.setAttribute('class', cls); + el._prevClass = cls; + } +} + +var klass = { + create: updateClass, + update: updateClass +}; + +/* */ + +var validDivisionCharRE = /[\w).+\-_$\]]/; + +function parseFilters (exp) { + var inSingle = false; + var inDouble = false; + var inTemplateString = false; + var inRegex = false; + var curly = 0; + var square = 0; + var paren = 0; + var lastFilterIndex = 0; + var c, prev, i, expression, filters; + + for (i = 0; i < exp.length; i++) { + prev = c; + c = exp.charCodeAt(i); + if (inSingle) { + if (c === 0x27 && prev !== 0x5C) { inSingle = false; } + } else if (inDouble) { + if (c === 0x22 && prev !== 0x5C) { inDouble = false; } + } else if (inTemplateString) { + if (c === 0x60 && prev !== 0x5C) { inTemplateString = false; } + } else if (inRegex) { + if (c === 0x2f && prev !== 0x5C) { inRegex = false; } + } else if ( + c === 0x7C && // pipe + exp.charCodeAt(i + 1) !== 0x7C && + exp.charCodeAt(i - 1) !== 0x7C && + !curly && !square && !paren + ) { + if (expression === undefined) { + // first filter, end of expression + lastFilterIndex = i + 1; + expression = exp.slice(0, i).trim(); + } else { + pushFilter(); + } + } else { + switch (c) { + case 0x22: inDouble = true; break // " + case 0x27: inSingle = true; break // ' + case 0x60: inTemplateString = true; break // ` + case 0x28: paren++; break // ( + case 0x29: paren--; break // ) + case 0x5B: square++; break // [ + case 0x5D: square--; break // ] + case 0x7B: curly++; break // { + case 0x7D: curly--; break // } + } + if (c === 0x2f) { // / + var j = i - 1; + var p = (void 0); + // find first non-whitespace prev char + for (; j >= 0; j--) { + p = exp.charAt(j); + if (p !== ' ') { break } + } + if (!p || !validDivisionCharRE.test(p)) { + inRegex = true; + } + } + } + } + + if (expression === undefined) { + expression = exp.slice(0, i).trim(); + } else if (lastFilterIndex !== 0) { + pushFilter(); + } + + function pushFilter () { + (filters || (filters = [])).push(exp.slice(lastFilterIndex, i).trim()); + lastFilterIndex = i + 1; + } + + if (filters) { + for (i = 0; i < filters.length; i++) { + expression = wrapFilter(expression, filters[i]); + } + } + + return expression +} + +function wrapFilter (exp, filter) { + var i = filter.indexOf('('); + if (i < 0) { + // _f: resolveFilter + return ("_f(\"" + filter + "\")(" + exp + ")") + } else { + var name = filter.slice(0, i); + var args = filter.slice(i + 1); + return ("_f(\"" + name + "\")(" + exp + (args !== ')' ? ',' + args : args)) + } +} + +/* */ + + + +/* eslint-disable no-unused-vars */ +function baseWarn (msg, range) { + console.error(("[Vue compiler]: " + msg)); +} +/* eslint-enable no-unused-vars */ + +function pluckModuleFunction ( + modules, + key +) { + return modules + ? modules.map(function (m) { return m[key]; }).filter(function (_) { return _; }) + : [] +} + +function addProp (el, name, value, range, dynamic) { + (el.props || (el.props = [])).push(rangeSetItem({ name: name, value: value, dynamic: dynamic }, range)); + el.plain = false; +} + +function addAttr (el, name, value, range, dynamic) { + var attrs = dynamic + ? (el.dynamicAttrs || (el.dynamicAttrs = [])) + : (el.attrs || (el.attrs = [])); + attrs.push(rangeSetItem({ name: name, value: value, dynamic: dynamic }, range)); + el.plain = false; +} + +// add a raw attr (use this in preTransforms) +function addRawAttr (el, name, value, range) { + el.attrsMap[name] = value; + el.attrsList.push(rangeSetItem({ name: name, value: value }, range)); +} + +function addDirective ( + el, + name, + rawName, + value, + arg, + isDynamicArg, + modifiers, + range +) { + (el.directives || (el.directives = [])).push(rangeSetItem({ + name: name, + rawName: rawName, + value: value, + arg: arg, + isDynamicArg: isDynamicArg, + modifiers: modifiers + }, range)); + el.plain = false; +} + +function prependModifierMarker (symbol, name, dynamic) { + return dynamic + ? ("_p(" + name + ",\"" + symbol + "\")") + : symbol + name // mark the event as captured +} + +function addHandler ( + el, + name, + value, + modifiers, + important, + warn, + range, + dynamic +) { + modifiers = modifiers || emptyObject; + // warn prevent and passive modifier + /* istanbul ignore if */ + if ( + warn && + modifiers.prevent && modifiers.passive + ) { + warn( + 'passive and prevent can\'t be used together. ' + + 'Passive handler can\'t prevent default event.', + range + ); + } + + // normalize click.right and click.middle since they don't actually fire + // this is technically browser-specific, but at least for now browsers are + // the only target envs that have right/middle clicks. + if (modifiers.right) { + if (dynamic) { + name = "(" + name + ")==='click'?'contextmenu':(" + name + ")"; + } else if (name === 'click') { + name = 'contextmenu'; + delete modifiers.right; + } + } else if (modifiers.middle) { + if (dynamic) { + name = "(" + name + ")==='click'?'mouseup':(" + name + ")"; + } else if (name === 'click') { + name = 'mouseup'; + } + } + + // check capture modifier + if (modifiers.capture) { + delete modifiers.capture; + name = prependModifierMarker('!', name, dynamic); + } + if (modifiers.once) { + delete modifiers.once; + name = prependModifierMarker('~', name, dynamic); + } + /* istanbul ignore if */ + if (modifiers.passive) { + delete modifiers.passive; + name = prependModifierMarker('&', name, dynamic); + } + + var events; + if (modifiers.native) { + delete modifiers.native; + events = el.nativeEvents || (el.nativeEvents = {}); + } else { + events = el.events || (el.events = {}); + } + + var newHandler = rangeSetItem({ value: value.trim(), dynamic: dynamic }, range); + if (modifiers !== emptyObject) { + newHandler.modifiers = modifiers; + } + + var handlers = events[name]; + /* istanbul ignore if */ + if (Array.isArray(handlers)) { + important ? handlers.unshift(newHandler) : handlers.push(newHandler); + } else if (handlers) { + events[name] = important ? [newHandler, handlers] : [handlers, newHandler]; + } else { + events[name] = newHandler; + } + + el.plain = false; +} + +function getRawBindingAttr ( + el, + name +) { + return el.rawAttrsMap[':' + name] || + el.rawAttrsMap['v-bind:' + name] || + el.rawAttrsMap[name] +} + +function getBindingAttr ( + el, + name, + getStatic +) { + var dynamicValue = + getAndRemoveAttr(el, ':' + name) || + getAndRemoveAttr(el, 'v-bind:' + name); + if (dynamicValue != null) { + return parseFilters(dynamicValue) + } else if (getStatic !== false) { + var staticValue = getAndRemoveAttr(el, name); + if (staticValue != null) { + return JSON.stringify(staticValue) + } + } +} + +// note: this only removes the attr from the Array (attrsList) so that it +// doesn't get processed by processAttrs. +// By default it does NOT remove it from the map (attrsMap) because the map is +// needed during codegen. +function getAndRemoveAttr ( + el, + name, + removeFromMap +) { + var val; + if ((val = el.attrsMap[name]) != null) { + var list = el.attrsList; + for (var i = 0, l = list.length; i < l; i++) { + if (list[i].name === name) { + list.splice(i, 1); + break + } + } + } + if (removeFromMap) { + delete el.attrsMap[name]; + } + return val +} + +function getAndRemoveAttrByRegex ( + el, + name +) { + var list = el.attrsList; + for (var i = 0, l = list.length; i < l; i++) { + var attr = list[i]; + if (name.test(attr.name)) { + list.splice(i, 1); + return attr + } + } +} + +function rangeSetItem ( + item, + range +) { + if (range) { + if (range.start != null) { + item.start = range.start; + } + if (range.end != null) { + item.end = range.end; + } + } + return item +} + +/* */ + +/** + * Cross-platform code generation for component v-model + */ +function genComponentModel ( + el, + value, + modifiers +) { + var ref = modifiers || {}; + var number = ref.number; + var trim = ref.trim; + + var baseValueExpression = '$$v'; + var valueExpression = baseValueExpression; + if (trim) { + valueExpression = + "(typeof " + baseValueExpression + " === 'string'" + + "? " + baseValueExpression + ".trim()" + + ": " + baseValueExpression + ")"; + } + if (number) { + valueExpression = "_n(" + valueExpression + ")"; + } + var assignment = genAssignmentCode(value, valueExpression); + + el.model = { + value: ("(" + value + ")"), + expression: JSON.stringify(value), + callback: ("function (" + baseValueExpression + ") {" + assignment + "}") + }; +} + +/** + * Cross-platform codegen helper for generating v-model value assignment code. + */ +function genAssignmentCode ( + value, + assignment +) { + var res = parseModel(value); + if (res.key === null) { + return (value + "=" + assignment) + } else { + return ("$set(" + (res.exp) + ", " + (res.key) + ", " + assignment + ")") + } +} + +/** + * Parse a v-model expression into a base path and a final key segment. + * Handles both dot-path and possible square brackets. + * + * Possible cases: + * + * - test + * - test[key] + * - test[test1[key]] + * - test["a"][key] + * - xxx.test[a[a].test1[key]] + * - test.xxx.a["asa"][test1[key]] + * + */ + +var len, str, chr, index$1, expressionPos, expressionEndPos; + + + +function parseModel (val) { + // Fix https://github.com/vuejs/vue/pull/7730 + // allow v-model="obj.val " (trailing whitespace) + val = val.trim(); + len = val.length; + + if (val.indexOf('[') < 0 || val.lastIndexOf(']') < len - 1) { + index$1 = val.lastIndexOf('.'); + if (index$1 > -1) { + return { + exp: val.slice(0, index$1), + key: '"' + val.slice(index$1 + 1) + '"' + } + } else { + return { + exp: val, + key: null + } + } + } + + str = val; + index$1 = expressionPos = expressionEndPos = 0; + + while (!eof()) { + chr = next(); + /* istanbul ignore if */ + if (isStringStart(chr)) { + parseString(chr); + } else if (chr === 0x5B) { + parseBracket(chr); + } + } + + return { + exp: val.slice(0, expressionPos), + key: val.slice(expressionPos + 1, expressionEndPos) + } +} + +function next () { + return str.charCodeAt(++index$1) +} + +function eof () { + return index$1 >= len +} + +function isStringStart (chr) { + return chr === 0x22 || chr === 0x27 +} + +function parseBracket (chr) { + var inBracket = 1; + expressionPos = index$1; + while (!eof()) { + chr = next(); + if (isStringStart(chr)) { + parseString(chr); + continue + } + if (chr === 0x5B) { inBracket++; } + if (chr === 0x5D) { inBracket--; } + if (inBracket === 0) { + expressionEndPos = index$1; + break + } + } +} + +function parseString (chr) { + var stringQuote = chr; + while (!eof()) { + chr = next(); + if (chr === stringQuote) { + break + } + } +} + +/* */ + +var warn$1; + +// in some cases, the event used has to be determined at runtime +// so we used some reserved tokens during compile. +var RANGE_TOKEN = '__r'; +var CHECKBOX_RADIO_TOKEN = '__c'; + +function model ( + el, + dir, + _warn +) { + warn$1 = _warn; + var value = dir.value; + var modifiers = dir.modifiers; + var tag = el.tag; + var type = el.attrsMap.type; + + { + // inputs with type="file" are read only and setting the input's + // value will throw an error. + if (tag === 'input' && type === 'file') { + warn$1( + "<" + (el.tag) + " v-model=\"" + value + "\" type=\"file\">:\n" + + "File inputs are read only. Use a v-on:change listener instead.", + el.rawAttrsMap['v-model'] + ); + } + } + + if (el.component) { + genComponentModel(el, value, modifiers); + // component v-model doesn't need extra runtime + return false + } else if (tag === 'select') { + genSelect(el, value, modifiers); + } else if (tag === 'input' && type === 'checkbox') { + genCheckboxModel(el, value, modifiers); + } else if (tag === 'input' && type === 'radio') { + genRadioModel(el, value, modifiers); + } else if (tag === 'input' || tag === 'textarea') { + genDefaultModel(el, value, modifiers); + } else if (!config.isReservedTag(tag)) { + genComponentModel(el, value, modifiers); + // component v-model doesn't need extra runtime + return false + } else { + warn$1( + "<" + (el.tag) + " v-model=\"" + value + "\">: " + + "v-model is not supported on this element type. " + + 'If you are working with contenteditable, it\'s recommended to ' + + 'wrap a library dedicated for that purpose inside a custom component.', + el.rawAttrsMap['v-model'] + ); + } + + // ensure runtime directive metadata + return true +} + +function genCheckboxModel ( + el, + value, + modifiers +) { + var number = modifiers && modifiers.number; + var valueBinding = getBindingAttr(el, 'value') || 'null'; + var trueValueBinding = getBindingAttr(el, 'true-value') || 'true'; + var falseValueBinding = getBindingAttr(el, 'false-value') || 'false'; + addProp(el, 'checked', + "Array.isArray(" + value + ")" + + "?_i(" + value + "," + valueBinding + ")>-1" + ( + trueValueBinding === 'true' + ? (":(" + value + ")") + : (":_q(" + value + "," + trueValueBinding + ")") + ) + ); + addHandler(el, 'change', + "var $$a=" + value + "," + + '$$el=$event.target,' + + "$$c=$$el.checked?(" + trueValueBinding + "):(" + falseValueBinding + ");" + + 'if(Array.isArray($$a)){' + + "var $$v=" + (number ? '_n(' + valueBinding + ')' : valueBinding) + "," + + '$$i=_i($$a,$$v);' + + "if($$el.checked){$$i<0&&(" + (genAssignmentCode(value, '$$a.concat([$$v])')) + ")}" + + "else{$$i>-1&&(" + (genAssignmentCode(value, '$$a.slice(0,$$i).concat($$a.slice($$i+1))')) + ")}" + + "}else{" + (genAssignmentCode(value, '$$c')) + "}", + null, true + ); +} + +function genRadioModel ( + el, + value, + modifiers +) { + var number = modifiers && modifiers.number; + var valueBinding = getBindingAttr(el, 'value') || 'null'; + valueBinding = number ? ("_n(" + valueBinding + ")") : valueBinding; + addProp(el, 'checked', ("_q(" + value + "," + valueBinding + ")")); + addHandler(el, 'change', genAssignmentCode(value, valueBinding), null, true); +} + +function genSelect ( + el, + value, + modifiers +) { + var number = modifiers && modifiers.number; + var selectedVal = "Array.prototype.filter" + + ".call($event.target.options,function(o){return o.selected})" + + ".map(function(o){var val = \"_value\" in o ? o._value : o.value;" + + "return " + (number ? '_n(val)' : 'val') + "})"; + + var assignment = '$event.target.multiple ? $$selectedVal : $$selectedVal[0]'; + var code = "var $$selectedVal = " + selectedVal + ";"; + code = code + " " + (genAssignmentCode(value, assignment)); + addHandler(el, 'change', code, null, true); +} + +function genDefaultModel ( + el, + value, + modifiers +) { + var type = el.attrsMap.type; + + // warn if v-bind:value conflicts with v-model + // except for inputs with v-bind:type + { + var value$1 = el.attrsMap['v-bind:value'] || el.attrsMap[':value']; + var typeBinding = el.attrsMap['v-bind:type'] || el.attrsMap[':type']; + if (value$1 && !typeBinding) { + var binding = el.attrsMap['v-bind:value'] ? 'v-bind:value' : ':value'; + warn$1( + binding + "=\"" + value$1 + "\" conflicts with v-model on the same element " + + 'because the latter already expands to a value binding internally', + el.rawAttrsMap[binding] + ); + } + } + + var ref = modifiers || {}; + var lazy = ref.lazy; + var number = ref.number; + var trim = ref.trim; + var needCompositionGuard = !lazy && type !== 'range'; + var event = lazy + ? 'change' + : type === 'range' + ? RANGE_TOKEN + : 'input'; + + var valueExpression = '$event.target.value'; + if (trim) { + valueExpression = "$event.target.value.trim()"; + } + if (number) { + valueExpression = "_n(" + valueExpression + ")"; + } + + var code = genAssignmentCode(value, valueExpression); + if (needCompositionGuard) { + code = "if($event.target.composing)return;" + code; + } + + addProp(el, 'value', ("(" + value + ")")); + addHandler(el, event, code, null, true); + if (trim || number) { + addHandler(el, 'blur', '$forceUpdate()'); + } +} + +/* */ + +// normalize v-model event tokens that can only be determined at runtime. +// it's important to place the event as the first in the array because +// the whole point is ensuring the v-model callback gets called before +// user-attached handlers. +function normalizeEvents (on) { + /* istanbul ignore if */ + if (isDef(on[RANGE_TOKEN])) { + // IE input[type=range] only supports `change` event + var event = isIE ? 'change' : 'input'; + on[event] = [].concat(on[RANGE_TOKEN], on[event] || []); + delete on[RANGE_TOKEN]; + } + // This was originally intended to fix #4521 but no longer necessary + // after 2.5. Keeping it for backwards compat with generated code from < 2.4 + /* istanbul ignore if */ + if (isDef(on[CHECKBOX_RADIO_TOKEN])) { + on.change = [].concat(on[CHECKBOX_RADIO_TOKEN], on.change || []); + delete on[CHECKBOX_RADIO_TOKEN]; + } +} + +var target$1; + +function createOnceHandler$1 (event, handler, capture) { + var _target = target$1; // save current target element in closure + return function onceHandler () { + var res = handler.apply(null, arguments); + if (res !== null) { + remove$2(event, onceHandler, capture, _target); + } + } +} + +// #9446: Firefox <= 53 (in particular, ESR 52) has incorrect Event.timeStamp +// implementation and does not fire microtasks in between event propagation, so +// safe to exclude. +var useMicrotaskFix = isUsingMicroTask && !(isFF && Number(isFF[1]) <= 53); + +function add$1 ( + name, + handler, + capture, + passive +) { + // async edge case #6566: inner click event triggers patch, event handler + // attached to outer element during patch, and triggered again. This + // happens because browsers fire microtask ticks between event propagation. + // the solution is simple: we save the timestamp when a handler is attached, + // and the handler would only fire if the event passed to it was fired + // AFTER it was attached. + if (useMicrotaskFix) { + var attachedTimestamp = currentFlushTimestamp; + var original = handler; + handler = original._wrapper = function (e) { + if ( + // no bubbling, should always fire. + // this is just a safety net in case event.timeStamp is unreliable in + // certain weird environments... + e.target === e.currentTarget || + // event is fired after handler attachment + e.timeStamp >= attachedTimestamp || + // bail for environments that have buggy event.timeStamp implementations + // #9462 iOS 9 bug: event.timeStamp is 0 after history.pushState + // #9681 QtWebEngine event.timeStamp is negative value + e.timeStamp <= 0 || + // #9448 bail if event is fired in another document in a multi-page + // electron/nw.js app, since event.timeStamp will be using a different + // starting reference + e.target.ownerDocument !== document + ) { + return original.apply(this, arguments) + } + }; + } + target$1.addEventListener( + name, + handler, + supportsPassive + ? { capture: capture, passive: passive } + : capture + ); +} + +function remove$2 ( + name, + handler, + capture, + _target +) { + (_target || target$1).removeEventListener( + name, + handler._wrapper || handler, + capture + ); +} + +function updateDOMListeners (oldVnode, vnode) { + if (isUndef(oldVnode.data.on) && isUndef(vnode.data.on)) { + return + } + var on = vnode.data.on || {}; + var oldOn = oldVnode.data.on || {}; + target$1 = vnode.elm; + normalizeEvents(on); + updateListeners(on, oldOn, add$1, remove$2, createOnceHandler$1, vnode.context); + target$1 = undefined; +} + +var events = { + create: updateDOMListeners, + update: updateDOMListeners +}; + +/* */ + +var svgContainer; + +function updateDOMProps (oldVnode, vnode) { + if (isUndef(oldVnode.data.domProps) && isUndef(vnode.data.domProps)) { + return + } + var key, cur; + var elm = vnode.elm; + var oldProps = oldVnode.data.domProps || {}; + var props = vnode.data.domProps || {}; + // clone observed objects, as the user probably wants to mutate it + if (isDef(props.__ob__)) { + props = vnode.data.domProps = extend({}, props); + } + + for (key in oldProps) { + if (!(key in props)) { + elm[key] = ''; + } + } + + for (key in props) { + cur = props[key]; + // ignore children if the node has textContent or innerHTML, + // as these will throw away existing DOM nodes and cause removal errors + // on subsequent patches (#3360) + if (key === 'textContent' || key === 'innerHTML') { + if (vnode.children) { vnode.children.length = 0; } + if (cur === oldProps[key]) { continue } + // #6601 work around Chrome version <= 55 bug where single textNode + // replaced by innerHTML/textContent retains its parentNode property + if (elm.childNodes.length === 1) { + elm.removeChild(elm.childNodes[0]); + } + } + + if (key === 'value' && elm.tagName !== 'PROGRESS') { + // store value as _value as well since + // non-string values will be stringified + elm._value = cur; + // avoid resetting cursor position when value is the same + var strCur = isUndef(cur) ? '' : String(cur); + if (shouldUpdateValue(elm, strCur)) { + elm.value = strCur; + } + } else if (key === 'innerHTML' && isSVG(elm.tagName) && isUndef(elm.innerHTML)) { + // IE doesn't support innerHTML for SVG elements + svgContainer = svgContainer || document.createElement('div'); + svgContainer.innerHTML = "<svg>" + cur + "</svg>"; + var svg = svgContainer.firstChild; + while (elm.firstChild) { + elm.removeChild(elm.firstChild); + } + while (svg.firstChild) { + elm.appendChild(svg.firstChild); + } + } else if ( + // skip the update if old and new VDOM state is the same. + // `value` is handled separately because the DOM value may be temporarily + // out of sync with VDOM state due to focus, composition and modifiers. + // This #4521 by skipping the unnecesarry `checked` update. + cur !== oldProps[key] + ) { + // some property updates can throw + // e.g. `value` on <progress> w/ non-finite value + try { + elm[key] = cur; + } catch (e) {} + } + } +} + +// check platforms/web/util/attrs.js acceptValue + + +function shouldUpdateValue (elm, checkVal) { + return (!elm.composing && ( + elm.tagName === 'OPTION' || + isNotInFocusAndDirty(elm, checkVal) || + isDirtyWithModifiers(elm, checkVal) + )) +} + +function isNotInFocusAndDirty (elm, checkVal) { + // return true when textbox (.number and .trim) loses focus and its value is + // not equal to the updated value + var notInFocus = true; + // #6157 + // work around IE bug when accessing document.activeElement in an iframe + try { notInFocus = document.activeElement !== elm; } catch (e) {} + return notInFocus && elm.value !== checkVal +} + +function isDirtyWithModifiers (elm, newVal) { + var value = elm.value; + var modifiers = elm._vModifiers; // injected by v-model runtime + if (isDef(modifiers)) { + if (modifiers.number) { + return toNumber(value) !== toNumber(newVal) + } + if (modifiers.trim) { + return value.trim() !== newVal.trim() + } + } + return value !== newVal +} + +var domProps = { + create: updateDOMProps, + update: updateDOMProps +}; + +/* */ + +var parseStyleText = cached(function (cssText) { + var res = {}; + var listDelimiter = /;(?![^(]*\))/g; + var propertyDelimiter = /:(.+)/; + cssText.split(listDelimiter).forEach(function (item) { + if (item) { + var tmp = item.split(propertyDelimiter); + tmp.length > 1 && (res[tmp[0].trim()] = tmp[1].trim()); + } + }); + return res +}); + +// merge static and dynamic style data on the same vnode +function normalizeStyleData (data) { + var style = normalizeStyleBinding(data.style); + // static style is pre-processed into an object during compilation + // and is always a fresh object, so it's safe to merge into it + return data.staticStyle + ? extend(data.staticStyle, style) + : style +} + +// normalize possible array / string values into Object +function normalizeStyleBinding (bindingStyle) { + if (Array.isArray(bindingStyle)) { + return toObject(bindingStyle) + } + if (typeof bindingStyle === 'string') { + return parseStyleText(bindingStyle) + } + return bindingStyle +} + +/** + * parent component style should be after child's + * so that parent component's style could override it + */ +function getStyle (vnode, checkChild) { + var res = {}; + var styleData; + + if (checkChild) { + var childNode = vnode; + while (childNode.componentInstance) { + childNode = childNode.componentInstance._vnode; + if ( + childNode && childNode.data && + (styleData = normalizeStyleData(childNode.data)) + ) { + extend(res, styleData); + } + } + } + + if ((styleData = normalizeStyleData(vnode.data))) { + extend(res, styleData); + } + + var parentNode = vnode; + while ((parentNode = parentNode.parent)) { + if (parentNode.data && (styleData = normalizeStyleData(parentNode.data))) { + extend(res, styleData); + } + } + return res +} + +/* */ + +var cssVarRE = /^--/; +var importantRE = /\s*!important$/; +var setProp = function (el, name, val) { + /* istanbul ignore if */ + if (cssVarRE.test(name)) { + el.style.setProperty(name, val); + } else if (importantRE.test(val)) { + el.style.setProperty(hyphenate(name), val.replace(importantRE, ''), 'important'); + } else { + var normalizedName = normalize(name); + if (Array.isArray(val)) { + // Support values array created by autoprefixer, e.g. + // {display: ["-webkit-box", "-ms-flexbox", "flex"]} + // Set them one by one, and the browser will only set those it can recognize + for (var i = 0, len = val.length; i < len; i++) { + el.style[normalizedName] = val[i]; + } + } else { + el.style[normalizedName] = val; + } + } +}; + +var vendorNames = ['Webkit', 'Moz', 'ms']; + +var emptyStyle; +var normalize = cached(function (prop) { + emptyStyle = emptyStyle || document.createElement('div').style; + prop = camelize(prop); + if (prop !== 'filter' && (prop in emptyStyle)) { + return prop + } + var capName = prop.charAt(0).toUpperCase() + prop.slice(1); + for (var i = 0; i < vendorNames.length; i++) { + var name = vendorNames[i] + capName; + if (name in emptyStyle) { + return name + } + } +}); + +function updateStyle (oldVnode, vnode) { + var data = vnode.data; + var oldData = oldVnode.data; + + if (isUndef(data.staticStyle) && isUndef(data.style) && + isUndef(oldData.staticStyle) && isUndef(oldData.style) + ) { + return + } + + var cur, name; + var el = vnode.elm; + var oldStaticStyle = oldData.staticStyle; + var oldStyleBinding = oldData.normalizedStyle || oldData.style || {}; + + // if static style exists, stylebinding already merged into it when doing normalizeStyleData + var oldStyle = oldStaticStyle || oldStyleBinding; + + var style = normalizeStyleBinding(vnode.data.style) || {}; + + // store normalized style under a different key for next diff + // make sure to clone it if it's reactive, since the user likely wants + // to mutate it. + vnode.data.normalizedStyle = isDef(style.__ob__) + ? extend({}, style) + : style; + + var newStyle = getStyle(vnode, true); + + for (name in oldStyle) { + if (isUndef(newStyle[name])) { + setProp(el, name, ''); + } + } + for (name in newStyle) { + cur = newStyle[name]; + if (cur !== oldStyle[name]) { + // ie9 setting to null has no effect, must use empty string + setProp(el, name, cur == null ? '' : cur); + } + } +} + +var style = { + create: updateStyle, + update: updateStyle +}; + +/* */ + +var whitespaceRE = /\s+/; + +/** + * Add class with compatibility for SVG since classList is not supported on + * SVG elements in IE + */ +function addClass (el, cls) { + /* istanbul ignore if */ + if (!cls || !(cls = cls.trim())) { + return + } + + /* istanbul ignore else */ + if (el.classList) { + if (cls.indexOf(' ') > -1) { + cls.split(whitespaceRE).forEach(function (c) { return el.classList.add(c); }); + } else { + el.classList.add(cls); + } + } else { + var cur = " " + (el.getAttribute('class') || '') + " "; + if (cur.indexOf(' ' + cls + ' ') < 0) { + el.setAttribute('class', (cur + cls).trim()); + } + } +} + +/** + * Remove class with compatibility for SVG since classList is not supported on + * SVG elements in IE + */ +function removeClass (el, cls) { + /* istanbul ignore if */ + if (!cls || !(cls = cls.trim())) { + return + } + + /* istanbul ignore else */ + if (el.classList) { + if (cls.indexOf(' ') > -1) { + cls.split(whitespaceRE).forEach(function (c) { return el.classList.remove(c); }); + } else { + el.classList.remove(cls); + } + if (!el.classList.length) { + el.removeAttribute('class'); + } + } else { + var cur = " " + (el.getAttribute('class') || '') + " "; + var tar = ' ' + cls + ' '; + while (cur.indexOf(tar) >= 0) { + cur = cur.replace(tar, ' '); + } + cur = cur.trim(); + if (cur) { + el.setAttribute('class', cur); + } else { + el.removeAttribute('class'); + } + } +} + +/* */ + +function resolveTransition (def$$1) { + if (!def$$1) { + return + } + /* istanbul ignore else */ + if (typeof def$$1 === 'object') { + var res = {}; + if (def$$1.css !== false) { + extend(res, autoCssTransition(def$$1.name || 'v')); + } + extend(res, def$$1); + return res + } else if (typeof def$$1 === 'string') { + return autoCssTransition(def$$1) + } +} + +var autoCssTransition = cached(function (name) { + return { + enterClass: (name + "-enter"), + enterToClass: (name + "-enter-to"), + enterActiveClass: (name + "-enter-active"), + leaveClass: (name + "-leave"), + leaveToClass: (name + "-leave-to"), + leaveActiveClass: (name + "-leave-active") + } +}); + +var hasTransition = inBrowser && !isIE9; +var TRANSITION = 'transition'; +var ANIMATION = 'animation'; + +// Transition property/event sniffing +var transitionProp = 'transition'; +var transitionEndEvent = 'transitionend'; +var animationProp = 'animation'; +var animationEndEvent = 'animationend'; +if (hasTransition) { + /* istanbul ignore if */ + if (window.ontransitionend === undefined && + window.onwebkittransitionend !== undefined + ) { + transitionProp = 'WebkitTransition'; + transitionEndEvent = 'webkitTransitionEnd'; + } + if (window.onanimationend === undefined && + window.onwebkitanimationend !== undefined + ) { + animationProp = 'WebkitAnimation'; + animationEndEvent = 'webkitAnimationEnd'; + } +} + +// binding to window is necessary to make hot reload work in IE in strict mode +var raf = inBrowser + ? window.requestAnimationFrame + ? window.requestAnimationFrame.bind(window) + : setTimeout + : /* istanbul ignore next */ function (fn) { return fn(); }; + +function nextFrame (fn) { + raf(function () { + raf(fn); + }); +} + +function addTransitionClass (el, cls) { + var transitionClasses = el._transitionClasses || (el._transitionClasses = []); + if (transitionClasses.indexOf(cls) < 0) { + transitionClasses.push(cls); + addClass(el, cls); + } +} + +function removeTransitionClass (el, cls) { + if (el._transitionClasses) { + remove(el._transitionClasses, cls); + } + removeClass(el, cls); +} + +function whenTransitionEnds ( + el, + expectedType, + cb +) { + var ref = getTransitionInfo(el, expectedType); + var type = ref.type; + var timeout = ref.timeout; + var propCount = ref.propCount; + if (!type) { return cb() } + var event = type === TRANSITION ? transitionEndEvent : animationEndEvent; + var ended = 0; + var end = function () { + el.removeEventListener(event, onEnd); + cb(); + }; + var onEnd = function (e) { + if (e.target === el) { + if (++ended >= propCount) { + end(); + } + } + }; + setTimeout(function () { + if (ended < propCount) { + end(); + } + }, timeout + 1); + el.addEventListener(event, onEnd); +} + +var transformRE = /\b(transform|all)(,|$)/; + +function getTransitionInfo (el, expectedType) { + var styles = window.getComputedStyle(el); + // JSDOM may return undefined for transition properties + var transitionDelays = (styles[transitionProp + 'Delay'] || '').split(', '); + var transitionDurations = (styles[transitionProp + 'Duration'] || '').split(', '); + var transitionTimeout = getTimeout(transitionDelays, transitionDurations); + var animationDelays = (styles[animationProp + 'Delay'] || '').split(', '); + var animationDurations = (styles[animationProp + 'Duration'] || '').split(', '); + var animationTimeout = getTimeout(animationDelays, animationDurations); + + var type; + var timeout = 0; + var propCount = 0; + /* istanbul ignore if */ + if (expectedType === TRANSITION) { + if (transitionTimeout > 0) { + type = TRANSITION; + timeout = transitionTimeout; + propCount = transitionDurations.length; + } + } else if (expectedType === ANIMATION) { + if (animationTimeout > 0) { + type = ANIMATION; + timeout = animationTimeout; + propCount = animationDurations.length; + } + } else { + timeout = Math.max(transitionTimeout, animationTimeout); + type = timeout > 0 + ? transitionTimeout > animationTimeout + ? TRANSITION + : ANIMATION + : null; + propCount = type + ? type === TRANSITION + ? transitionDurations.length + : animationDurations.length + : 0; + } + var hasTransform = + type === TRANSITION && + transformRE.test(styles[transitionProp + 'Property']); + return { + type: type, + timeout: timeout, + propCount: propCount, + hasTransform: hasTransform + } +} + +function getTimeout (delays, durations) { + /* istanbul ignore next */ + while (delays.length < durations.length) { + delays = delays.concat(delays); + } + + return Math.max.apply(null, durations.map(function (d, i) { + return toMs(d) + toMs(delays[i]) + })) +} + +// Old versions of Chromium (below 61.0.3163.100) formats floating pointer numbers +// in a locale-dependent way, using a comma instead of a dot. +// If comma is not replaced with a dot, the input will be rounded down (i.e. acting +// as a floor function) causing unexpected behaviors +function toMs (s) { + return Number(s.slice(0, -1).replace(',', '.')) * 1000 +} + +/* */ + +function enter (vnode, toggleDisplay) { + var el = vnode.elm; + + // call leave callback now + if (isDef(el._leaveCb)) { + el._leaveCb.cancelled = true; + el._leaveCb(); + } + + var data = resolveTransition(vnode.data.transition); + if (isUndef(data)) { + return + } + + /* istanbul ignore if */ + if (isDef(el._enterCb) || el.nodeType !== 1) { + return + } + + var css = data.css; + var type = data.type; + var enterClass = data.enterClass; + var enterToClass = data.enterToClass; + var enterActiveClass = data.enterActiveClass; + var appearClass = data.appearClass; + var appearToClass = data.appearToClass; + var appearActiveClass = data.appearActiveClass; + var beforeEnter = data.beforeEnter; + var enter = data.enter; + var afterEnter = data.afterEnter; + var enterCancelled = data.enterCancelled; + var beforeAppear = data.beforeAppear; + var appear = data.appear; + var afterAppear = data.afterAppear; + var appearCancelled = data.appearCancelled; + var duration = data.duration; + + // activeInstance will always be the <transition> component managing this + // transition. One edge case to check is when the <transition> is placed + // as the root node of a child component. In that case we need to check + // <transition>'s parent for appear check. + var context = activeInstance; + var transitionNode = activeInstance.$vnode; + while (transitionNode && transitionNode.parent) { + context = transitionNode.context; + transitionNode = transitionNode.parent; + } + + var isAppear = !context._isMounted || !vnode.isRootInsert; + + if (isAppear && !appear && appear !== '') { + return + } + + var startClass = isAppear && appearClass + ? appearClass + : enterClass; + var activeClass = isAppear && appearActiveClass + ? appearActiveClass + : enterActiveClass; + var toClass = isAppear && appearToClass + ? appearToClass + : enterToClass; + + var beforeEnterHook = isAppear + ? (beforeAppear || beforeEnter) + : beforeEnter; + var enterHook = isAppear + ? (typeof appear === 'function' ? appear : enter) + : enter; + var afterEnterHook = isAppear + ? (afterAppear || afterEnter) + : afterEnter; + var enterCancelledHook = isAppear + ? (appearCancelled || enterCancelled) + : enterCancelled; + + var explicitEnterDuration = toNumber( + isObject(duration) + ? duration.enter + : duration + ); + + if (explicitEnterDuration != null) { + checkDuration(explicitEnterDuration, 'enter', vnode); + } + + var expectsCSS = css !== false && !isIE9; + var userWantsControl = getHookArgumentsLength(enterHook); + + var cb = el._enterCb = once(function () { + if (expectsCSS) { + removeTransitionClass(el, toClass); + removeTransitionClass(el, activeClass); + } + if (cb.cancelled) { + if (expectsCSS) { + removeTransitionClass(el, startClass); + } + enterCancelledHook && enterCancelledHook(el); + } else { + afterEnterHook && afterEnterHook(el); + } + el._enterCb = null; + }); + + if (!vnode.data.show) { + // remove pending leave element on enter by injecting an insert hook + mergeVNodeHook(vnode, 'insert', function () { + var parent = el.parentNode; + var pendingNode = parent && parent._pending && parent._pending[vnode.key]; + if (pendingNode && + pendingNode.tag === vnode.tag && + pendingNode.elm._leaveCb + ) { + pendingNode.elm._leaveCb(); + } + enterHook && enterHook(el, cb); + }); + } + + // start enter transition + beforeEnterHook && beforeEnterHook(el); + if (expectsCSS) { + addTransitionClass(el, startClass); + addTransitionClass(el, activeClass); + nextFrame(function () { + removeTransitionClass(el, startClass); + if (!cb.cancelled) { + addTransitionClass(el, toClass); + if (!userWantsControl) { + if (isValidDuration(explicitEnterDuration)) { + setTimeout(cb, explicitEnterDuration); + } else { + whenTransitionEnds(el, type, cb); + } + } + } + }); + } + + if (vnode.data.show) { + toggleDisplay && toggleDisplay(); + enterHook && enterHook(el, cb); + } + + if (!expectsCSS && !userWantsControl) { + cb(); + } +} + +function leave (vnode, rm) { + var el = vnode.elm; + + // call enter callback now + if (isDef(el._enterCb)) { + el._enterCb.cancelled = true; + el._enterCb(); + } + + var data = resolveTransition(vnode.data.transition); + if (isUndef(data) || el.nodeType !== 1) { + return rm() + } + + /* istanbul ignore if */ + if (isDef(el._leaveCb)) { + return + } + + var css = data.css; + var type = data.type; + var leaveClass = data.leaveClass; + var leaveToClass = data.leaveToClass; + var leaveActiveClass = data.leaveActiveClass; + var beforeLeave = data.beforeLeave; + var leave = data.leave; + var afterLeave = data.afterLeave; + var leaveCancelled = data.leaveCancelled; + var delayLeave = data.delayLeave; + var duration = data.duration; + + var expectsCSS = css !== false && !isIE9; + var userWantsControl = getHookArgumentsLength(leave); + + var explicitLeaveDuration = toNumber( + isObject(duration) + ? duration.leave + : duration + ); + + if (isDef(explicitLeaveDuration)) { + checkDuration(explicitLeaveDuration, 'leave', vnode); + } + + var cb = el._leaveCb = once(function () { + if (el.parentNode && el.parentNode._pending) { + el.parentNode._pending[vnode.key] = null; + } + if (expectsCSS) { + removeTransitionClass(el, leaveToClass); + removeTransitionClass(el, leaveActiveClass); + } + if (cb.cancelled) { + if (expectsCSS) { + removeTransitionClass(el, leaveClass); + } + leaveCancelled && leaveCancelled(el); + } else { + rm(); + afterLeave && afterLeave(el); + } + el._leaveCb = null; + }); + + if (delayLeave) { + delayLeave(performLeave); + } else { + performLeave(); + } + + function performLeave () { + // the delayed leave may have already been cancelled + if (cb.cancelled) { + return + } + // record leaving element + if (!vnode.data.show && el.parentNode) { + (el.parentNode._pending || (el.parentNode._pending = {}))[(vnode.key)] = vnode; + } + beforeLeave && beforeLeave(el); + if (expectsCSS) { + addTransitionClass(el, leaveClass); + addTransitionClass(el, leaveActiveClass); + nextFrame(function () { + removeTransitionClass(el, leaveClass); + if (!cb.cancelled) { + addTransitionClass(el, leaveToClass); + if (!userWantsControl) { + if (isValidDuration(explicitLeaveDuration)) { + setTimeout(cb, explicitLeaveDuration); + } else { + whenTransitionEnds(el, type, cb); + } + } + } + }); + } + leave && leave(el, cb); + if (!expectsCSS && !userWantsControl) { + cb(); + } + } +} + +// only used in dev mode +function checkDuration (val, name, vnode) { + if (typeof val !== 'number') { + warn( + "<transition> explicit " + name + " duration is not a valid number - " + + "got " + (JSON.stringify(val)) + ".", + vnode.context + ); + } else if (isNaN(val)) { + warn( + "<transition> explicit " + name + " duration is NaN - " + + 'the duration expression might be incorrect.', + vnode.context + ); + } +} + +function isValidDuration (val) { + return typeof val === 'number' && !isNaN(val) +} + +/** + * Normalize a transition hook's argument length. The hook may be: + * - a merged hook (invoker) with the original in .fns + * - a wrapped component method (check ._length) + * - a plain function (.length) + */ +function getHookArgumentsLength (fn) { + if (isUndef(fn)) { + return false + } + var invokerFns = fn.fns; + if (isDef(invokerFns)) { + // invoker + return getHookArgumentsLength( + Array.isArray(invokerFns) + ? invokerFns[0] + : invokerFns + ) + } else { + return (fn._length || fn.length) > 1 + } +} + +function _enter (_, vnode) { + if (vnode.data.show !== true) { + enter(vnode); + } +} + +var transition = inBrowser ? { + create: _enter, + activate: _enter, + remove: function remove$$1 (vnode, rm) { + /* istanbul ignore else */ + if (vnode.data.show !== true) { + leave(vnode, rm); + } else { + rm(); + } + } +} : {}; + +var platformModules = [ + attrs, + klass, + events, + domProps, + style, + transition +]; + +/* */ + +// the directive module should be applied last, after all +// built-in modules have been applied. +var modules = platformModules.concat(baseModules); + +var patch = createPatchFunction({ nodeOps: nodeOps, modules: modules }); + +/** + * Not type checking this file because flow doesn't like attaching + * properties to Elements. + */ + +/* istanbul ignore if */ +if (isIE9) { + // http://www.matts411.com/post/internet-explorer-9-oninput/ + document.addEventListener('selectionchange', function () { + var el = document.activeElement; + if (el && el.vmodel) { + trigger(el, 'input'); + } + }); +} + +var directive = { + inserted: function inserted (el, binding, vnode, oldVnode) { + if (vnode.tag === 'select') { + // #6903 + if (oldVnode.elm && !oldVnode.elm._vOptions) { + mergeVNodeHook(vnode, 'postpatch', function () { + directive.componentUpdated(el, binding, vnode); + }); + } else { + setSelected(el, binding, vnode.context); + } + el._vOptions = [].map.call(el.options, getValue); + } else if (vnode.tag === 'textarea' || isTextInputType(el.type)) { + el._vModifiers = binding.modifiers; + if (!binding.modifiers.lazy) { + el.addEventListener('compositionstart', onCompositionStart); + el.addEventListener('compositionend', onCompositionEnd); + // Safari < 10.2 & UIWebView doesn't fire compositionend when + // switching focus before confirming composition choice + // this also fixes the issue where some browsers e.g. iOS Chrome + // fires "change" instead of "input" on autocomplete. + el.addEventListener('change', onCompositionEnd); + /* istanbul ignore if */ + if (isIE9) { + el.vmodel = true; + } + } + } + }, + + componentUpdated: function componentUpdated (el, binding, vnode) { + if (vnode.tag === 'select') { + setSelected(el, binding, vnode.context); + // in case the options rendered by v-for have changed, + // it's possible that the value is out-of-sync with the rendered options. + // detect such cases and filter out values that no longer has a matching + // option in the DOM. + var prevOptions = el._vOptions; + var curOptions = el._vOptions = [].map.call(el.options, getValue); + if (curOptions.some(function (o, i) { return !looseEqual(o, prevOptions[i]); })) { + // trigger change event if + // no matching option found for at least one value + var needReset = el.multiple + ? binding.value.some(function (v) { return hasNoMatchingOption(v, curOptions); }) + : binding.value !== binding.oldValue && hasNoMatchingOption(binding.value, curOptions); + if (needReset) { + trigger(el, 'change'); + } + } + } + } +}; + +function setSelected (el, binding, vm) { + actuallySetSelected(el, binding, vm); + /* istanbul ignore if */ + if (isIE || isEdge) { + setTimeout(function () { + actuallySetSelected(el, binding, vm); + }, 0); + } +} + +function actuallySetSelected (el, binding, vm) { + var value = binding.value; + var isMultiple = el.multiple; + if (isMultiple && !Array.isArray(value)) { + warn( + "<select multiple v-model=\"" + (binding.expression) + "\"> " + + "expects an Array value for its binding, but got " + (Object.prototype.toString.call(value).slice(8, -1)), + vm + ); + return + } + var selected, option; + for (var i = 0, l = el.options.length; i < l; i++) { + option = el.options[i]; + if (isMultiple) { + selected = looseIndexOf(value, getValue(option)) > -1; + if (option.selected !== selected) { + option.selected = selected; + } + } else { + if (looseEqual(getValue(option), value)) { + if (el.selectedIndex !== i) { + el.selectedIndex = i; + } + return + } + } + } + if (!isMultiple) { + el.selectedIndex = -1; + } +} + +function hasNoMatchingOption (value, options) { + return options.every(function (o) { return !looseEqual(o, value); }) +} + +function getValue (option) { + return '_value' in option + ? option._value + : option.value +} + +function onCompositionStart (e) { + e.target.composing = true; +} + +function onCompositionEnd (e) { + // prevent triggering an input event for no reason + if (!e.target.composing) { return } + e.target.composing = false; + trigger(e.target, 'input'); +} + +function trigger (el, type) { + var e = document.createEvent('HTMLEvents'); + e.initEvent(type, true, true); + el.dispatchEvent(e); +} + +/* */ + +// recursively search for possible transition defined inside the component root +function locateNode (vnode) { + return vnode.componentInstance && (!vnode.data || !vnode.data.transition) + ? locateNode(vnode.componentInstance._vnode) + : vnode +} + +var show = { + bind: function bind (el, ref, vnode) { + var value = ref.value; + + vnode = locateNode(vnode); + var transition$$1 = vnode.data && vnode.data.transition; + var originalDisplay = el.__vOriginalDisplay = + el.style.display === 'none' ? '' : el.style.display; + if (value && transition$$1) { + vnode.data.show = true; + enter(vnode, function () { + el.style.display = originalDisplay; + }); + } else { + el.style.display = value ? originalDisplay : 'none'; + } + }, + + update: function update (el, ref, vnode) { + var value = ref.value; + var oldValue = ref.oldValue; + + /* istanbul ignore if */ + if (!value === !oldValue) { return } + vnode = locateNode(vnode); + var transition$$1 = vnode.data && vnode.data.transition; + if (transition$$1) { + vnode.data.show = true; + if (value) { + enter(vnode, function () { + el.style.display = el.__vOriginalDisplay; + }); + } else { + leave(vnode, function () { + el.style.display = 'none'; + }); + } + } else { + el.style.display = value ? el.__vOriginalDisplay : 'none'; + } + }, + + unbind: function unbind ( + el, + binding, + vnode, + oldVnode, + isDestroy + ) { + if (!isDestroy) { + el.style.display = el.__vOriginalDisplay; + } + } +}; + +var platformDirectives = { + model: directive, + show: show +}; + +/* */ + +var transitionProps = { + name: String, + appear: Boolean, + css: Boolean, + mode: String, + type: String, + enterClass: String, + leaveClass: String, + enterToClass: String, + leaveToClass: String, + enterActiveClass: String, + leaveActiveClass: String, + appearClass: String, + appearActiveClass: String, + appearToClass: String, + duration: [Number, String, Object] +}; + +// in case the child is also an abstract component, e.g. <keep-alive> +// we want to recursively retrieve the real component to be rendered +function getRealChild (vnode) { + var compOptions = vnode && vnode.componentOptions; + if (compOptions && compOptions.Ctor.options.abstract) { + return getRealChild(getFirstComponentChild(compOptions.children)) + } else { + return vnode + } +} + +function extractTransitionData (comp) { + var data = {}; + var options = comp.$options; + // props + for (var key in options.propsData) { + data[key] = comp[key]; + } + // events. + // extract listeners and pass them directly to the transition methods + var listeners = options._parentListeners; + for (var key$1 in listeners) { + data[camelize(key$1)] = listeners[key$1]; + } + return data +} + +function placeholder (h, rawChild) { + if (/\d-keep-alive$/.test(rawChild.tag)) { + return h('keep-alive', { + props: rawChild.componentOptions.propsData + }) + } +} + +function hasParentTransition (vnode) { + while ((vnode = vnode.parent)) { + if (vnode.data.transition) { + return true + } + } +} + +function isSameChild (child, oldChild) { + return oldChild.key === child.key && oldChild.tag === child.tag +} + +var isNotTextNode = function (c) { return c.tag || isAsyncPlaceholder(c); }; + +var isVShowDirective = function (d) { return d.name === 'show'; }; + +var Transition = { + name: 'transition', + props: transitionProps, + abstract: true, + + render: function render (h) { + var this$1 = this; + + var children = this.$slots.default; + if (!children) { + return + } + + // filter out text nodes (possible whitespaces) + children = children.filter(isNotTextNode); + /* istanbul ignore if */ + if (!children.length) { + return + } + + // warn multiple elements + if (children.length > 1) { + warn( + '<transition> can only be used on a single element. Use ' + + '<transition-group> for lists.', + this.$parent + ); + } + + var mode = this.mode; + + // warn invalid mode + if (mode && mode !== 'in-out' && mode !== 'out-in' + ) { + warn( + 'invalid <transition> mode: ' + mode, + this.$parent + ); + } + + var rawChild = children[0]; + + // if this is a component root node and the component's + // parent container node also has transition, skip. + if (hasParentTransition(this.$vnode)) { + return rawChild + } + + // apply transition data to child + // use getRealChild() to ignore abstract components e.g. keep-alive + var child = getRealChild(rawChild); + /* istanbul ignore if */ + if (!child) { + return rawChild + } + + if (this._leaving) { + return placeholder(h, rawChild) + } + + // ensure a key that is unique to the vnode type and to this transition + // component instance. This key will be used to remove pending leaving nodes + // during entering. + var id = "__transition-" + (this._uid) + "-"; + child.key = child.key == null + ? child.isComment + ? id + 'comment' + : id + child.tag + : isPrimitive(child.key) + ? (String(child.key).indexOf(id) === 0 ? child.key : id + child.key) + : child.key; + + var data = (child.data || (child.data = {})).transition = extractTransitionData(this); + var oldRawChild = this._vnode; + var oldChild = getRealChild(oldRawChild); + + // mark v-show + // so that the transition module can hand over the control to the directive + if (child.data.directives && child.data.directives.some(isVShowDirective)) { + child.data.show = true; + } + + if ( + oldChild && + oldChild.data && + !isSameChild(child, oldChild) && + !isAsyncPlaceholder(oldChild) && + // #6687 component root is a comment node + !(oldChild.componentInstance && oldChild.componentInstance._vnode.isComment) + ) { + // replace old child transition data with fresh one + // important for dynamic transitions! + var oldData = oldChild.data.transition = extend({}, data); + // handle transition mode + if (mode === 'out-in') { + // return placeholder node and queue update when leave finishes + this._leaving = true; + mergeVNodeHook(oldData, 'afterLeave', function () { + this$1._leaving = false; + this$1.$forceUpdate(); + }); + return placeholder(h, rawChild) + } else if (mode === 'in-out') { + if (isAsyncPlaceholder(child)) { + return oldRawChild + } + var delayedLeave; + var performLeave = function () { delayedLeave(); }; + mergeVNodeHook(data, 'afterEnter', performLeave); + mergeVNodeHook(data, 'enterCancelled', performLeave); + mergeVNodeHook(oldData, 'delayLeave', function (leave) { delayedLeave = leave; }); + } + } + + return rawChild + } +}; + +/* */ + +var props = extend({ + tag: String, + moveClass: String +}, transitionProps); + +delete props.mode; + +var TransitionGroup = { + props: props, + + beforeMount: function beforeMount () { + var this$1 = this; + + var update = this._update; + this._update = function (vnode, hydrating) { + var restoreActiveInstance = setActiveInstance(this$1); + // force removing pass + this$1.__patch__( + this$1._vnode, + this$1.kept, + false, // hydrating + true // removeOnly (!important, avoids unnecessary moves) + ); + this$1._vnode = this$1.kept; + restoreActiveInstance(); + update.call(this$1, vnode, hydrating); + }; + }, + + render: function render (h) { + var tag = this.tag || this.$vnode.data.tag || 'span'; + var map = Object.create(null); + var prevChildren = this.prevChildren = this.children; + var rawChildren = this.$slots.default || []; + var children = this.children = []; + var transitionData = extractTransitionData(this); + + for (var i = 0; i < rawChildren.length; i++) { + var c = rawChildren[i]; + if (c.tag) { + if (c.key != null && String(c.key).indexOf('__vlist') !== 0) { + children.push(c); + map[c.key] = c + ;(c.data || (c.data = {})).transition = transitionData; + } else { + var opts = c.componentOptions; + var name = opts ? (opts.Ctor.options.name || opts.tag || '') : c.tag; + warn(("<transition-group> children must be keyed: <" + name + ">")); + } + } + } + + if (prevChildren) { + var kept = []; + var removed = []; + for (var i$1 = 0; i$1 < prevChildren.length; i$1++) { + var c$1 = prevChildren[i$1]; + c$1.data.transition = transitionData; + c$1.data.pos = c$1.elm.getBoundingClientRect(); + if (map[c$1.key]) { + kept.push(c$1); + } else { + removed.push(c$1); + } + } + this.kept = h(tag, null, kept); + this.removed = removed; + } + + return h(tag, null, children) + }, + + updated: function updated () { + var children = this.prevChildren; + var moveClass = this.moveClass || ((this.name || 'v') + '-move'); + if (!children.length || !this.hasMove(children[0].elm, moveClass)) { + return + } + + // we divide the work into three loops to avoid mixing DOM reads and writes + // in each iteration - which helps prevent layout thrashing. + children.forEach(callPendingCbs); + children.forEach(recordPosition); + children.forEach(applyTranslation); + + // force reflow to put everything in position + // assign to this to avoid being removed in tree-shaking + // $flow-disable-line + this._reflow = document.body.offsetHeight; + + children.forEach(function (c) { + if (c.data.moved) { + var el = c.elm; + var s = el.style; + addTransitionClass(el, moveClass); + s.transform = s.WebkitTransform = s.transitionDuration = ''; + el.addEventListener(transitionEndEvent, el._moveCb = function cb (e) { + if (e && e.target !== el) { + return + } + if (!e || /transform$/.test(e.propertyName)) { + el.removeEventListener(transitionEndEvent, cb); + el._moveCb = null; + removeTransitionClass(el, moveClass); + } + }); + } + }); + }, + + methods: { + hasMove: function hasMove (el, moveClass) { + /* istanbul ignore if */ + if (!hasTransition) { + return false + } + /* istanbul ignore if */ + if (this._hasMove) { + return this._hasMove + } + // Detect whether an element with the move class applied has + // CSS transitions. Since the element may be inside an entering + // transition at this very moment, we make a clone of it and remove + // all other transition classes applied to ensure only the move class + // is applied. + var clone = el.cloneNode(); + if (el._transitionClasses) { + el._transitionClasses.forEach(function (cls) { removeClass(clone, cls); }); + } + addClass(clone, moveClass); + clone.style.display = 'none'; + this.$el.appendChild(clone); + var info = getTransitionInfo(clone); + this.$el.removeChild(clone); + return (this._hasMove = info.hasTransform) + } + } +}; + +function callPendingCbs (c) { + /* istanbul ignore if */ + if (c.elm._moveCb) { + c.elm._moveCb(); + } + /* istanbul ignore if */ + if (c.elm._enterCb) { + c.elm._enterCb(); + } +} + +function recordPosition (c) { + c.data.newPos = c.elm.getBoundingClientRect(); +} + +function applyTranslation (c) { + var oldPos = c.data.pos; + var newPos = c.data.newPos; + var dx = oldPos.left - newPos.left; + var dy = oldPos.top - newPos.top; + if (dx || dy) { + c.data.moved = true; + var s = c.elm.style; + s.transform = s.WebkitTransform = "translate(" + dx + "px," + dy + "px)"; + s.transitionDuration = '0s'; + } +} + +var platformComponents = { + Transition: Transition, + TransitionGroup: TransitionGroup +}; + +/* */ + +// install platform specific utils +Vue.config.mustUseProp = mustUseProp; +Vue.config.isReservedTag = isReservedTag; +Vue.config.isReservedAttr = isReservedAttr; +Vue.config.getTagNamespace = getTagNamespace; +Vue.config.isUnknownElement = isUnknownElement; + +// install platform runtime directives & components +extend(Vue.options.directives, platformDirectives); +extend(Vue.options.components, platformComponents); + +// install platform patch function +Vue.prototype.__patch__ = inBrowser ? patch : noop; + +// public mount method +Vue.prototype.$mount = function ( + el, + hydrating +) { + el = el && inBrowser ? query(el) : undefined; + return mountComponent(this, el, hydrating) +}; + +// devtools global hook +/* istanbul ignore next */ +if (inBrowser) { + setTimeout(function () { + if (config.devtools) { + if (devtools) { + devtools.emit('init', Vue); + } else { + console[console.info ? 'info' : 'log']( + 'Download the Vue Devtools extension for a better development experience:\n' + + 'https://github.com/vuejs/vue-devtools' + ); + } + } + if (config.productionTip !== false && + typeof console !== 'undefined' + ) { + console[console.info ? 'info' : 'log']( + "You are running Vue in development mode.\n" + + "Make sure to turn on production mode when deploying for production.\n" + + "See more tips at https://vuejs.org/guide/deployment.html" + ); + } + }, 0); +} + +/* */ + +var defaultTagRE = /\{\{((?:.|\r?\n)+?)\}\}/g; +var regexEscapeRE = /[-.*+?^${}()|[\]\/\\]/g; + +var buildRegex = cached(function (delimiters) { + var open = delimiters[0].replace(regexEscapeRE, '\\$&'); + var close = delimiters[1].replace(regexEscapeRE, '\\$&'); + return new RegExp(open + '((?:.|\\n)+?)' + close, 'g') +}); + + + +function parseText ( + text, + delimiters +) { + var tagRE = delimiters ? buildRegex(delimiters) : defaultTagRE; + if (!tagRE.test(text)) { + return + } + var tokens = []; + var rawTokens = []; + var lastIndex = tagRE.lastIndex = 0; + var match, index, tokenValue; + while ((match = tagRE.exec(text))) { + index = match.index; + // push text token + if (index > lastIndex) { + rawTokens.push(tokenValue = text.slice(lastIndex, index)); + tokens.push(JSON.stringify(tokenValue)); + } + // tag token + var exp = parseFilters(match[1].trim()); + tokens.push(("_s(" + exp + ")")); + rawTokens.push({ '@binding': exp }); + lastIndex = index + match[0].length; + } + if (lastIndex < text.length) { + rawTokens.push(tokenValue = text.slice(lastIndex)); + tokens.push(JSON.stringify(tokenValue)); + } + return { + expression: tokens.join('+'), + tokens: rawTokens + } +} + +/* */ + +function transformNode (el, options) { + var warn = options.warn || baseWarn; + var staticClass = getAndRemoveAttr(el, 'class'); + if (staticClass) { + var res = parseText(staticClass, options.delimiters); + if (res) { + warn( + "class=\"" + staticClass + "\": " + + 'Interpolation inside attributes has been removed. ' + + 'Use v-bind or the colon shorthand instead. For example, ' + + 'instead of <div class="{{ val }}">, use <div :class="val">.', + el.rawAttrsMap['class'] + ); + } + } + if (staticClass) { + el.staticClass = JSON.stringify(staticClass); + } + var classBinding = getBindingAttr(el, 'class', false /* getStatic */); + if (classBinding) { + el.classBinding = classBinding; + } +} + +function genData (el) { + var data = ''; + if (el.staticClass) { + data += "staticClass:" + (el.staticClass) + ","; + } + if (el.classBinding) { + data += "class:" + (el.classBinding) + ","; + } + return data +} + +var klass$1 = { + staticKeys: ['staticClass'], + transformNode: transformNode, + genData: genData +}; + +/* */ + +function transformNode$1 (el, options) { + var warn = options.warn || baseWarn; + var staticStyle = getAndRemoveAttr(el, 'style'); + if (staticStyle) { + /* istanbul ignore if */ + { + var res = parseText(staticStyle, options.delimiters); + if (res) { + warn( + "style=\"" + staticStyle + "\": " + + 'Interpolation inside attributes has been removed. ' + + 'Use v-bind or the colon shorthand instead. For example, ' + + 'instead of <div style="{{ val }}">, use <div :style="val">.', + el.rawAttrsMap['style'] + ); + } + } + el.staticStyle = JSON.stringify(parseStyleText(staticStyle)); + } + + var styleBinding = getBindingAttr(el, 'style', false /* getStatic */); + if (styleBinding) { + el.styleBinding = styleBinding; + } +} + +function genData$1 (el) { + var data = ''; + if (el.staticStyle) { + data += "staticStyle:" + (el.staticStyle) + ","; + } + if (el.styleBinding) { + data += "style:(" + (el.styleBinding) + "),"; + } + return data +} + +var style$1 = { + staticKeys: ['staticStyle'], + transformNode: transformNode$1, + genData: genData$1 +}; + +/* */ + +var decoder; + +var he = { + decode: function decode (html) { + decoder = decoder || document.createElement('div'); + decoder.innerHTML = html; + return decoder.textContent + } +}; + +/* */ + +var isUnaryTag = makeMap( + 'area,base,br,col,embed,frame,hr,img,input,isindex,keygen,' + + 'link,meta,param,source,track,wbr' +); + +// Elements that you can, intentionally, leave open +// (and which close themselves) +var canBeLeftOpenTag = makeMap( + 'colgroup,dd,dt,li,options,p,td,tfoot,th,thead,tr,source' +); + +// HTML5 tags https://html.spec.whatwg.org/multipage/indices.html#elements-3 +// Phrasing Content https://html.spec.whatwg.org/multipage/dom.html#phrasing-content +var isNonPhrasingTag = makeMap( + 'address,article,aside,base,blockquote,body,caption,col,colgroup,dd,' + + 'details,dialog,div,dl,dt,fieldset,figcaption,figure,footer,form,' + + 'h1,h2,h3,h4,h5,h6,head,header,hgroup,hr,html,legend,li,menuitem,meta,' + + 'optgroup,option,param,rp,rt,source,style,summary,tbody,td,tfoot,th,thead,' + + 'title,tr,track' +); + +/** + * Not type-checking this file because it's mostly vendor code. + */ + +// Regular Expressions for parsing tags and attributes +var attribute = /^\s*([^\s"'<>\/=]+)(?:\s*(=)\s*(?:"([^"]*)"+|'([^']*)'+|([^\s"'=<>`]+)))?/; +var dynamicArgAttribute = /^\s*((?:v-[\w-]+:|@|:|#)\[[^=]+\][^\s"'<>\/=]*)(?:\s*(=)\s*(?:"([^"]*)"+|'([^']*)'+|([^\s"'=<>`]+)))?/; +var ncname = "[a-zA-Z_][\\-\\.0-9_a-zA-Z" + (unicodeRegExp.source) + "]*"; +var qnameCapture = "((?:" + ncname + "\\:)?" + ncname + ")"; +var startTagOpen = new RegExp(("^<" + qnameCapture)); +var startTagClose = /^\s*(\/?)>/; +var endTag = new RegExp(("^<\\/" + qnameCapture + "[^>]*>")); +var doctype = /^<!DOCTYPE [^>]+>/i; +// #7298: escape - to avoid being pased as HTML comment when inlined in page +var comment = /^<!\--/; +var conditionalComment = /^<!\[/; + +// Special Elements (can contain anything) +var isPlainTextElement = makeMap('script,style,textarea', true); +var reCache = {}; + +var decodingMap = { + '<': '<', + '>': '>', + '"': '"', + '&': '&', + ' ': '\n', + '	': '\t', + ''': "'" +}; +var encodedAttr = /&(?:lt|gt|quot|amp|#39);/g; +var encodedAttrWithNewLines = /&(?:lt|gt|quot|amp|#39|#10|#9);/g; + +// #5992 +var isIgnoreNewlineTag = makeMap('pre,textarea', true); +var shouldIgnoreFirstNewline = function (tag, html) { return tag && isIgnoreNewlineTag(tag) && html[0] === '\n'; }; + +function decodeAttr (value, shouldDecodeNewlines) { + var re = shouldDecodeNewlines ? encodedAttrWithNewLines : encodedAttr; + return value.replace(re, function (match) { return decodingMap[match]; }) +} + +function parseHTML (html, options) { + var stack = []; + var expectHTML = options.expectHTML; + var isUnaryTag$$1 = options.isUnaryTag || no; + var canBeLeftOpenTag$$1 = options.canBeLeftOpenTag || no; + var index = 0; + var last, lastTag; + while (html) { + last = html; + // Make sure we're not in a plaintext content element like script/style + if (!lastTag || !isPlainTextElement(lastTag)) { + var textEnd = html.indexOf('<'); + if (textEnd === 0) { + // Comment: + if (comment.test(html)) { + var commentEnd = html.indexOf('-->'); + + if (commentEnd >= 0) { + if (options.shouldKeepComment) { + options.comment(html.substring(4, commentEnd), index, index + commentEnd + 3); + } + advance(commentEnd + 3); + continue + } + } + + // http://en.wikipedia.org/wiki/Conditional_comment#Downlevel-revealed_conditional_comment + if (conditionalComment.test(html)) { + var conditionalEnd = html.indexOf(']>'); + + if (conditionalEnd >= 0) { + advance(conditionalEnd + 2); + continue + } + } + + // Doctype: + var doctypeMatch = html.match(doctype); + if (doctypeMatch) { + advance(doctypeMatch[0].length); + continue + } + + // End tag: + var endTagMatch = html.match(endTag); + if (endTagMatch) { + var curIndex = index; + advance(endTagMatch[0].length); + parseEndTag(endTagMatch[1], curIndex, index); + continue + } + + // Start tag: + var startTagMatch = parseStartTag(); + if (startTagMatch) { + handleStartTag(startTagMatch); + if (shouldIgnoreFirstNewline(startTagMatch.tagName, html)) { + advance(1); + } + continue + } + } + + var text = (void 0), rest = (void 0), next = (void 0); + if (textEnd >= 0) { + rest = html.slice(textEnd); + while ( + !endTag.test(rest) && + !startTagOpen.test(rest) && + !comment.test(rest) && + !conditionalComment.test(rest) + ) { + // < in plain text, be forgiving and treat it as text + next = rest.indexOf('<', 1); + if (next < 0) { break } + textEnd += next; + rest = html.slice(textEnd); + } + text = html.substring(0, textEnd); + } + + if (textEnd < 0) { + text = html; + } + + if (text) { + advance(text.length); + } + + if (options.chars && text) { + options.chars(text, index - text.length, index); + } + } else { + var endTagLength = 0; + var stackedTag = lastTag.toLowerCase(); + var reStackedTag = reCache[stackedTag] || (reCache[stackedTag] = new RegExp('([\\s\\S]*?)(</' + stackedTag + '[^>]*>)', 'i')); + var rest$1 = html.replace(reStackedTag, function (all, text, endTag) { + endTagLength = endTag.length; + if (!isPlainTextElement(stackedTag) && stackedTag !== 'noscript') { + text = text + .replace(/<!\--([\s\S]*?)-->/g, '$1') // #7298 + .replace(/<!\[CDATA\[([\s\S]*?)]]>/g, '$1'); + } + if (shouldIgnoreFirstNewline(stackedTag, text)) { + text = text.slice(1); + } + if (options.chars) { + options.chars(text); + } + return '' + }); + index += html.length - rest$1.length; + html = rest$1; + parseEndTag(stackedTag, index - endTagLength, index); + } + + if (html === last) { + options.chars && options.chars(html); + if (!stack.length && options.warn) { + options.warn(("Mal-formatted tag at end of template: \"" + html + "\""), { start: index + html.length }); + } + break + } + } + + // Clean up any remaining tags + parseEndTag(); + + function advance (n) { + index += n; + html = html.substring(n); + } + + function parseStartTag () { + var start = html.match(startTagOpen); + if (start) { + var match = { + tagName: start[1], + attrs: [], + start: index + }; + advance(start[0].length); + var end, attr; + while (!(end = html.match(startTagClose)) && (attr = html.match(dynamicArgAttribute) || html.match(attribute))) { + attr.start = index; + advance(attr[0].length); + attr.end = index; + match.attrs.push(attr); + } + if (end) { + match.unarySlash = end[1]; + advance(end[0].length); + match.end = index; + return match + } + } + } + + function handleStartTag (match) { + var tagName = match.tagName; + var unarySlash = match.unarySlash; + + if (expectHTML) { + if (lastTag === 'p' && isNonPhrasingTag(tagName)) { + parseEndTag(lastTag); + } + if (canBeLeftOpenTag$$1(tagName) && lastTag === tagName) { + parseEndTag(tagName); + } + } + + var unary = isUnaryTag$$1(tagName) || !!unarySlash; + + var l = match.attrs.length; + var attrs = new Array(l); + for (var i = 0; i < l; i++) { + var args = match.attrs[i]; + var value = args[3] || args[4] || args[5] || ''; + var shouldDecodeNewlines = tagName === 'a' && args[1] === 'href' + ? options.shouldDecodeNewlinesForHref + : options.shouldDecodeNewlines; + attrs[i] = { + name: args[1], + value: decodeAttr(value, shouldDecodeNewlines) + }; + if (options.outputSourceRange) { + attrs[i].start = args.start + args[0].match(/^\s*/).length; + attrs[i].end = args.end; + } + } + + if (!unary) { + stack.push({ tag: tagName, lowerCasedTag: tagName.toLowerCase(), attrs: attrs, start: match.start, end: match.end }); + lastTag = tagName; + } + + if (options.start) { + options.start(tagName, attrs, unary, match.start, match.end); + } + } + + function parseEndTag (tagName, start, end) { + var pos, lowerCasedTagName; + if (start == null) { start = index; } + if (end == null) { end = index; } + + // Find the closest opened tag of the same type + if (tagName) { + lowerCasedTagName = tagName.toLowerCase(); + for (pos = stack.length - 1; pos >= 0; pos--) { + if (stack[pos].lowerCasedTag === lowerCasedTagName) { + break + } + } + } else { + // If no tag name is provided, clean shop + pos = 0; + } + + if (pos >= 0) { + // Close all the open elements, up the stack + for (var i = stack.length - 1; i >= pos; i--) { + if (i > pos || !tagName && + options.warn + ) { + options.warn( + ("tag <" + (stack[i].tag) + "> has no matching end tag."), + { start: stack[i].start, end: stack[i].end } + ); + } + if (options.end) { + options.end(stack[i].tag, start, end); + } + } + + // Remove the open elements from the stack + stack.length = pos; + lastTag = pos && stack[pos - 1].tag; + } else if (lowerCasedTagName === 'br') { + if (options.start) { + options.start(tagName, [], true, start, end); + } + } else if (lowerCasedTagName === 'p') { + if (options.start) { + options.start(tagName, [], false, start, end); + } + if (options.end) { + options.end(tagName, start, end); + } + } + } +} + +/* */ + +var onRE = /^@|^v-on:/; +var dirRE = /^v-|^@|^:/; +var forAliasRE = /([\s\S]*?)\s+(?:in|of)\s+([\s\S]*)/; +var forIteratorRE = /,([^,\}\]]*)(?:,([^,\}\]]*))?$/; +var stripParensRE = /^\(|\)$/g; +var dynamicArgRE = /^\[.*\]$/; + +var argRE = /:(.*)$/; +var bindRE = /^:|^\.|^v-bind:/; +var modifierRE = /\.[^.\]]+(?=[^\]]*$)/g; + +var slotRE = /^v-slot(:|$)|^#/; + +var lineBreakRE = /[\r\n]/; +var whitespaceRE$1 = /\s+/g; + +var invalidAttributeRE = /[\s"'<>\/=]/; + +var decodeHTMLCached = cached(he.decode); + +var emptySlotScopeToken = "_empty_"; + +// configurable state +var warn$2; +var delimiters; +var transforms; +var preTransforms; +var postTransforms; +var platformIsPreTag; +var platformMustUseProp; +var platformGetTagNamespace; +var maybeComponent; + +function createASTElement ( + tag, + attrs, + parent +) { + return { + type: 1, + tag: tag, + attrsList: attrs, + attrsMap: makeAttrsMap(attrs), + rawAttrsMap: {}, + parent: parent, + children: [] + } +} + +/** + * Convert HTML string to AST. + */ +function parse ( + template, + options +) { + warn$2 = options.warn || baseWarn; + + platformIsPreTag = options.isPreTag || no; + platformMustUseProp = options.mustUseProp || no; + platformGetTagNamespace = options.getTagNamespace || no; + var isReservedTag = options.isReservedTag || no; + maybeComponent = function (el) { return !!el.component || !isReservedTag(el.tag); }; + + transforms = pluckModuleFunction(options.modules, 'transformNode'); + preTransforms = pluckModuleFunction(options.modules, 'preTransformNode'); + postTransforms = pluckModuleFunction(options.modules, 'postTransformNode'); + + delimiters = options.delimiters; + + var stack = []; + var preserveWhitespace = options.preserveWhitespace !== false; + var whitespaceOption = options.whitespace; + var root; + var currentParent; + var inVPre = false; + var inPre = false; + var warned = false; + + function warnOnce (msg, range) { + if (!warned) { + warned = true; + warn$2(msg, range); + } + } + + function closeElement (element) { + trimEndingWhitespace(element); + if (!inVPre && !element.processed) { + element = processElement(element, options); + } + // tree management + if (!stack.length && element !== root) { + // allow root elements with v-if, v-else-if and v-else + if (root.if && (element.elseif || element.else)) { + { + checkRootConstraints(element); + } + addIfCondition(root, { + exp: element.elseif, + block: element + }); + } else { + warnOnce( + "Component template should contain exactly one root element. " + + "If you are using v-if on multiple elements, " + + "use v-else-if to chain them instead.", + { start: element.start } + ); + } + } + if (currentParent && !element.forbidden) { + if (element.elseif || element.else) { + processIfConditions(element, currentParent); + } else { + if (element.slotScope) { + // scoped slot + // keep it in the children list so that v-else(-if) conditions can + // find it as the prev node. + var name = element.slotTarget || '"default"' + ;(currentParent.scopedSlots || (currentParent.scopedSlots = {}))[name] = element; + } + currentParent.children.push(element); + element.parent = currentParent; + } + } + + // final children cleanup + // filter out scoped slots + element.children = element.children.filter(function (c) { return !(c).slotScope; }); + // remove trailing whitespace node again + trimEndingWhitespace(element); + + // check pre state + if (element.pre) { + inVPre = false; + } + if (platformIsPreTag(element.tag)) { + inPre = false; + } + // apply post-transforms + for (var i = 0; i < postTransforms.length; i++) { + postTransforms[i](element, options); + } + } + + function trimEndingWhitespace (el) { + // remove trailing whitespace node + if (!inPre) { + var lastNode; + while ( + (lastNode = el.children[el.children.length - 1]) && + lastNode.type === 3 && + lastNode.text === ' ' + ) { + el.children.pop(); + } + } + } + + function checkRootConstraints (el) { + if (el.tag === 'slot' || el.tag === 'template') { + warnOnce( + "Cannot use <" + (el.tag) + "> as component root element because it may " + + 'contain multiple nodes.', + { start: el.start } + ); + } + if (el.attrsMap.hasOwnProperty('v-for')) { + warnOnce( + 'Cannot use v-for on stateful component root element because ' + + 'it renders multiple elements.', + el.rawAttrsMap['v-for'] + ); + } + } + + parseHTML(template, { + warn: warn$2, + expectHTML: options.expectHTML, + isUnaryTag: options.isUnaryTag, + canBeLeftOpenTag: options.canBeLeftOpenTag, + shouldDecodeNewlines: options.shouldDecodeNewlines, + shouldDecodeNewlinesForHref: options.shouldDecodeNewlinesForHref, + shouldKeepComment: options.comments, + outputSourceRange: options.outputSourceRange, + start: function start (tag, attrs, unary, start$1, end) { + // check namespace. + // inherit parent ns if there is one + var ns = (currentParent && currentParent.ns) || platformGetTagNamespace(tag); + + // handle IE svg bug + /* istanbul ignore if */ + if (isIE && ns === 'svg') { + attrs = guardIESVGBug(attrs); + } + + var element = createASTElement(tag, attrs, currentParent); + if (ns) { + element.ns = ns; + } + + { + if (options.outputSourceRange) { + element.start = start$1; + element.end = end; + element.rawAttrsMap = element.attrsList.reduce(function (cumulated, attr) { + cumulated[attr.name] = attr; + return cumulated + }, {}); + } + attrs.forEach(function (attr) { + if (invalidAttributeRE.test(attr.name)) { + warn$2( + "Invalid dynamic argument expression: attribute names cannot contain " + + "spaces, quotes, <, >, / or =.", + { + start: attr.start + attr.name.indexOf("["), + end: attr.start + attr.name.length + } + ); + } + }); + } + + if (isForbiddenTag(element) && !isServerRendering()) { + element.forbidden = true; + warn$2( + 'Templates should only be responsible for mapping the state to the ' + + 'UI. Avoid placing tags with side-effects in your templates, such as ' + + "<" + tag + ">" + ', as they will not be parsed.', + { start: element.start } + ); + } + + // apply pre-transforms + for (var i = 0; i < preTransforms.length; i++) { + element = preTransforms[i](element, options) || element; + } + + if (!inVPre) { + processPre(element); + if (element.pre) { + inVPre = true; + } + } + if (platformIsPreTag(element.tag)) { + inPre = true; + } + if (inVPre) { + processRawAttrs(element); + } else if (!element.processed) { + // structural directives + processFor(element); + processIf(element); + processOnce(element); + } + + if (!root) { + root = element; + { + checkRootConstraints(root); + } + } + + if (!unary) { + currentParent = element; + stack.push(element); + } else { + closeElement(element); + } + }, + + end: function end (tag, start, end$1) { + var element = stack[stack.length - 1]; + // pop stack + stack.length -= 1; + currentParent = stack[stack.length - 1]; + if (options.outputSourceRange) { + element.end = end$1; + } + closeElement(element); + }, + + chars: function chars (text, start, end) { + if (!currentParent) { + { + if (text === template) { + warnOnce( + 'Component template requires a root element, rather than just text.', + { start: start } + ); + } else if ((text = text.trim())) { + warnOnce( + ("text \"" + text + "\" outside root element will be ignored."), + { start: start } + ); + } + } + return + } + // IE textarea placeholder bug + /* istanbul ignore if */ + if (isIE && + currentParent.tag === 'textarea' && + currentParent.attrsMap.placeholder === text + ) { + return + } + var children = currentParent.children; + if (inPre || text.trim()) { + text = isTextTag(currentParent) ? text : decodeHTMLCached(text); + } else if (!children.length) { + // remove the whitespace-only node right after an opening tag + text = ''; + } else if (whitespaceOption) { + if (whitespaceOption === 'condense') { + // in condense mode, remove the whitespace node if it contains + // line break, otherwise condense to a single space + text = lineBreakRE.test(text) ? '' : ' '; + } else { + text = ' '; + } + } else { + text = preserveWhitespace ? ' ' : ''; + } + if (text) { + if (!inPre && whitespaceOption === 'condense') { + // condense consecutive whitespaces into single space + text = text.replace(whitespaceRE$1, ' '); + } + var res; + var child; + if (!inVPre && text !== ' ' && (res = parseText(text, delimiters))) { + child = { + type: 2, + expression: res.expression, + tokens: res.tokens, + text: text + }; + } else if (text !== ' ' || !children.length || children[children.length - 1].text !== ' ') { + child = { + type: 3, + text: text + }; + } + if (child) { + if (options.outputSourceRange) { + child.start = start; + child.end = end; + } + children.push(child); + } + } + }, + comment: function comment (text, start, end) { + // adding anyting as a sibling to the root node is forbidden + // comments should still be allowed, but ignored + if (currentParent) { + var child = { + type: 3, + text: text, + isComment: true + }; + if (options.outputSourceRange) { + child.start = start; + child.end = end; + } + currentParent.children.push(child); + } + } + }); + return root +} + +function processPre (el) { + if (getAndRemoveAttr(el, 'v-pre') != null) { + el.pre = true; + } +} + +function processRawAttrs (el) { + var list = el.attrsList; + var len = list.length; + if (len) { + var attrs = el.attrs = new Array(len); + for (var i = 0; i < len; i++) { + attrs[i] = { + name: list[i].name, + value: JSON.stringify(list[i].value) + }; + if (list[i].start != null) { + attrs[i].start = list[i].start; + attrs[i].end = list[i].end; + } + } + } else if (!el.pre) { + // non root node in pre blocks with no attributes + el.plain = true; + } +} + +function processElement ( + element, + options +) { + processKey(element); + + // determine whether this is a plain element after + // removing structural attributes + element.plain = ( + !element.key && + !element.scopedSlots && + !element.attrsList.length + ); + + processRef(element); + processSlotContent(element); + processSlotOutlet(element); + processComponent(element); + for (var i = 0; i < transforms.length; i++) { + element = transforms[i](element, options) || element; + } + processAttrs(element); + return element +} + +function processKey (el) { + var exp = getBindingAttr(el, 'key'); + if (exp) { + { + if (el.tag === 'template') { + warn$2( + "<template> cannot be keyed. Place the key on real elements instead.", + getRawBindingAttr(el, 'key') + ); + } + if (el.for) { + var iterator = el.iterator2 || el.iterator1; + var parent = el.parent; + if (iterator && iterator === exp && parent && parent.tag === 'transition-group') { + warn$2( + "Do not use v-for index as key on <transition-group> children, " + + "this is the same as not using keys.", + getRawBindingAttr(el, 'key'), + true /* tip */ + ); + } + } + } + el.key = exp; + } +} + +function processRef (el) { + var ref = getBindingAttr(el, 'ref'); + if (ref) { + el.ref = ref; + el.refInFor = checkInFor(el); + } +} + +function processFor (el) { + var exp; + if ((exp = getAndRemoveAttr(el, 'v-for'))) { + var res = parseFor(exp); + if (res) { + extend(el, res); + } else { + warn$2( + ("Invalid v-for expression: " + exp), + el.rawAttrsMap['v-for'] + ); + } + } +} + + + +function parseFor (exp) { + var inMatch = exp.match(forAliasRE); + if (!inMatch) { return } + var res = {}; + res.for = inMatch[2].trim(); + var alias = inMatch[1].trim().replace(stripParensRE, ''); + var iteratorMatch = alias.match(forIteratorRE); + if (iteratorMatch) { + res.alias = alias.replace(forIteratorRE, '').trim(); + res.iterator1 = iteratorMatch[1].trim(); + if (iteratorMatch[2]) { + res.iterator2 = iteratorMatch[2].trim(); + } + } else { + res.alias = alias; + } + return res +} + +function processIf (el) { + var exp = getAndRemoveAttr(el, 'v-if'); + if (exp) { + el.if = exp; + addIfCondition(el, { + exp: exp, + block: el + }); + } else { + if (getAndRemoveAttr(el, 'v-else') != null) { + el.else = true; + } + var elseif = getAndRemoveAttr(el, 'v-else-if'); + if (elseif) { + el.elseif = elseif; + } + } +} + +function processIfConditions (el, parent) { + var prev = findPrevElement(parent.children); + if (prev && prev.if) { + addIfCondition(prev, { + exp: el.elseif, + block: el + }); + } else { + warn$2( + "v-" + (el.elseif ? ('else-if="' + el.elseif + '"') : 'else') + " " + + "used on element <" + (el.tag) + "> without corresponding v-if.", + el.rawAttrsMap[el.elseif ? 'v-else-if' : 'v-else'] + ); + } +} + +function findPrevElement (children) { + var i = children.length; + while (i--) { + if (children[i].type === 1) { + return children[i] + } else { + if (children[i].text !== ' ') { + warn$2( + "text \"" + (children[i].text.trim()) + "\" between v-if and v-else(-if) " + + "will be ignored.", + children[i] + ); + } + children.pop(); + } + } +} + +function addIfCondition (el, condition) { + if (!el.ifConditions) { + el.ifConditions = []; + } + el.ifConditions.push(condition); +} + +function processOnce (el) { + var once$$1 = getAndRemoveAttr(el, 'v-once'); + if (once$$1 != null) { + el.once = true; + } +} + +// handle content being passed to a component as slot, +// e.g. <template slot="xxx">, <div slot-scope="xxx"> +function processSlotContent (el) { + var slotScope; + if (el.tag === 'template') { + slotScope = getAndRemoveAttr(el, 'scope'); + /* istanbul ignore if */ + if (slotScope) { + warn$2( + "the \"scope\" attribute for scoped slots have been deprecated and " + + "replaced by \"slot-scope\" since 2.5. The new \"slot-scope\" attribute " + + "can also be used on plain elements in addition to <template> to " + + "denote scoped slots.", + el.rawAttrsMap['scope'], + true + ); + } + el.slotScope = slotScope || getAndRemoveAttr(el, 'slot-scope'); + } else if ((slotScope = getAndRemoveAttr(el, 'slot-scope'))) { + /* istanbul ignore if */ + if (el.attrsMap['v-for']) { + warn$2( + "Ambiguous combined usage of slot-scope and v-for on <" + (el.tag) + "> " + + "(v-for takes higher priority). Use a wrapper <template> for the " + + "scoped slot to make it clearer.", + el.rawAttrsMap['slot-scope'], + true + ); + } + el.slotScope = slotScope; + } + + // slot="xxx" + var slotTarget = getBindingAttr(el, 'slot'); + if (slotTarget) { + el.slotTarget = slotTarget === '""' ? '"default"' : slotTarget; + el.slotTargetDynamic = !!(el.attrsMap[':slot'] || el.attrsMap['v-bind:slot']); + // preserve slot as an attribute for native shadow DOM compat + // only for non-scoped slots. + if (el.tag !== 'template' && !el.slotScope) { + addAttr(el, 'slot', slotTarget, getRawBindingAttr(el, 'slot')); + } + } + + // 2.6 v-slot syntax + { + if (el.tag === 'template') { + // v-slot on <template> + var slotBinding = getAndRemoveAttrByRegex(el, slotRE); + if (slotBinding) { + { + if (el.slotTarget || el.slotScope) { + warn$2( + "Unexpected mixed usage of different slot syntaxes.", + el + ); + } + if (el.parent && !maybeComponent(el.parent)) { + warn$2( + "<template v-slot> can only appear at the root level inside " + + "the receiving the component", + el + ); + } + } + var ref = getSlotName(slotBinding); + var name = ref.name; + var dynamic = ref.dynamic; + el.slotTarget = name; + el.slotTargetDynamic = dynamic; + el.slotScope = slotBinding.value || emptySlotScopeToken; // force it into a scoped slot for perf + } + } else { + // v-slot on component, denotes default slot + var slotBinding$1 = getAndRemoveAttrByRegex(el, slotRE); + if (slotBinding$1) { + { + if (!maybeComponent(el)) { + warn$2( + "v-slot can only be used on components or <template>.", + slotBinding$1 + ); + } + if (el.slotScope || el.slotTarget) { + warn$2( + "Unexpected mixed usage of different slot syntaxes.", + el + ); + } + if (el.scopedSlots) { + warn$2( + "To avoid scope ambiguity, the default slot should also use " + + "<template> syntax when there are other named slots.", + slotBinding$1 + ); + } + } + // add the component's children to its default slot + var slots = el.scopedSlots || (el.scopedSlots = {}); + var ref$1 = getSlotName(slotBinding$1); + var name$1 = ref$1.name; + var dynamic$1 = ref$1.dynamic; + var slotContainer = slots[name$1] = createASTElement('template', [], el); + slotContainer.slotTarget = name$1; + slotContainer.slotTargetDynamic = dynamic$1; + slotContainer.children = el.children.filter(function (c) { + if (!c.slotScope) { + c.parent = slotContainer; + return true + } + }); + slotContainer.slotScope = slotBinding$1.value || emptySlotScopeToken; + // remove children as they are returned from scopedSlots now + el.children = []; + // mark el non-plain so data gets generated + el.plain = false; + } + } + } +} + +function getSlotName (binding) { + var name = binding.name.replace(slotRE, ''); + if (!name) { + if (binding.name[0] !== '#') { + name = 'default'; + } else { + warn$2( + "v-slot shorthand syntax requires a slot name.", + binding + ); + } + } + return dynamicArgRE.test(name) + // dynamic [name] + ? { name: name.slice(1, -1), dynamic: true } + // static name + : { name: ("\"" + name + "\""), dynamic: false } +} + +// handle <slot/> outlets +function processSlotOutlet (el) { + if (el.tag === 'slot') { + el.slotName = getBindingAttr(el, 'name'); + if (el.key) { + warn$2( + "`key` does not work on <slot> because slots are abstract outlets " + + "and can possibly expand into multiple elements. " + + "Use the key on a wrapping element instead.", + getRawBindingAttr(el, 'key') + ); + } + } +} + +function processComponent (el) { + var binding; + if ((binding = getBindingAttr(el, 'is'))) { + el.component = binding; + } + if (getAndRemoveAttr(el, 'inline-template') != null) { + el.inlineTemplate = true; + } +} + +function processAttrs (el) { + var list = el.attrsList; + var i, l, name, rawName, value, modifiers, syncGen, isDynamic; + for (i = 0, l = list.length; i < l; i++) { + name = rawName = list[i].name; + value = list[i].value; + if (dirRE.test(name)) { + // mark element as dynamic + el.hasBindings = true; + // modifiers + modifiers = parseModifiers(name.replace(dirRE, '')); + // support .foo shorthand syntax for the .prop modifier + if (modifiers) { + name = name.replace(modifierRE, ''); + } + if (bindRE.test(name)) { // v-bind + name = name.replace(bindRE, ''); + value = parseFilters(value); + isDynamic = dynamicArgRE.test(name); + if (isDynamic) { + name = name.slice(1, -1); + } + if ( + value.trim().length === 0 + ) { + warn$2( + ("The value for a v-bind expression cannot be empty. Found in \"v-bind:" + name + "\"") + ); + } + if (modifiers) { + if (modifiers.prop && !isDynamic) { + name = camelize(name); + if (name === 'innerHtml') { name = 'innerHTML'; } + } + if (modifiers.camel && !isDynamic) { + name = camelize(name); + } + if (modifiers.sync) { + syncGen = genAssignmentCode(value, "$event"); + if (!isDynamic) { + addHandler( + el, + ("update:" + (camelize(name))), + syncGen, + null, + false, + warn$2, + list[i] + ); + if (hyphenate(name) !== camelize(name)) { + addHandler( + el, + ("update:" + (hyphenate(name))), + syncGen, + null, + false, + warn$2, + list[i] + ); + } + } else { + // handler w/ dynamic event name + addHandler( + el, + ("\"update:\"+(" + name + ")"), + syncGen, + null, + false, + warn$2, + list[i], + true // dynamic + ); + } + } + } + if ((modifiers && modifiers.prop) || ( + !el.component && platformMustUseProp(el.tag, el.attrsMap.type, name) + )) { + addProp(el, name, value, list[i], isDynamic); + } else { + addAttr(el, name, value, list[i], isDynamic); + } + } else if (onRE.test(name)) { // v-on + name = name.replace(onRE, ''); + isDynamic = dynamicArgRE.test(name); + if (isDynamic) { + name = name.slice(1, -1); + } + addHandler(el, name, value, modifiers, false, warn$2, list[i], isDynamic); + } else { // normal directives + name = name.replace(dirRE, ''); + // parse arg + var argMatch = name.match(argRE); + var arg = argMatch && argMatch[1]; + isDynamic = false; + if (arg) { + name = name.slice(0, -(arg.length + 1)); + if (dynamicArgRE.test(arg)) { + arg = arg.slice(1, -1); + isDynamic = true; + } + } + addDirective(el, name, rawName, value, arg, isDynamic, modifiers, list[i]); + if (name === 'model') { + checkForAliasModel(el, value); + } + } + } else { + // literal attribute + { + var res = parseText(value, delimiters); + if (res) { + warn$2( + name + "=\"" + value + "\": " + + 'Interpolation inside attributes has been removed. ' + + 'Use v-bind or the colon shorthand instead. For example, ' + + 'instead of <div id="{{ val }}">, use <div :id="val">.', + list[i] + ); + } + } + addAttr(el, name, JSON.stringify(value), list[i]); + // #6887 firefox doesn't update muted state if set via attribute + // even immediately after element creation + if (!el.component && + name === 'muted' && + platformMustUseProp(el.tag, el.attrsMap.type, name)) { + addProp(el, name, 'true', list[i]); + } + } + } +} + +function checkInFor (el) { + var parent = el; + while (parent) { + if (parent.for !== undefined) { + return true + } + parent = parent.parent; + } + return false +} + +function parseModifiers (name) { + var match = name.match(modifierRE); + if (match) { + var ret = {}; + match.forEach(function (m) { ret[m.slice(1)] = true; }); + return ret + } +} + +function makeAttrsMap (attrs) { + var map = {}; + for (var i = 0, l = attrs.length; i < l; i++) { + if ( + map[attrs[i].name] && !isIE && !isEdge + ) { + warn$2('duplicate attribute: ' + attrs[i].name, attrs[i]); + } + map[attrs[i].name] = attrs[i].value; + } + return map +} + +// for script (e.g. type="x/template") or style, do not decode content +function isTextTag (el) { + return el.tag === 'script' || el.tag === 'style' +} + +function isForbiddenTag (el) { + return ( + el.tag === 'style' || + (el.tag === 'script' && ( + !el.attrsMap.type || + el.attrsMap.type === 'text/javascript' + )) + ) +} + +var ieNSBug = /^xmlns:NS\d+/; +var ieNSPrefix = /^NS\d+:/; + +/* istanbul ignore next */ +function guardIESVGBug (attrs) { + var res = []; + for (var i = 0; i < attrs.length; i++) { + var attr = attrs[i]; + if (!ieNSBug.test(attr.name)) { + attr.name = attr.name.replace(ieNSPrefix, ''); + res.push(attr); + } + } + return res +} + +function checkForAliasModel (el, value) { + var _el = el; + while (_el) { + if (_el.for && _el.alias === value) { + warn$2( + "<" + (el.tag) + " v-model=\"" + value + "\">: " + + "You are binding v-model directly to a v-for iteration alias. " + + "This will not be able to modify the v-for source array because " + + "writing to the alias is like modifying a function local variable. " + + "Consider using an array of objects and use v-model on an object property instead.", + el.rawAttrsMap['v-model'] + ); + } + _el = _el.parent; + } +} + +/* */ + +function preTransformNode (el, options) { + if (el.tag === 'input') { + var map = el.attrsMap; + if (!map['v-model']) { + return + } + + var typeBinding; + if (map[':type'] || map['v-bind:type']) { + typeBinding = getBindingAttr(el, 'type'); + } + if (!map.type && !typeBinding && map['v-bind']) { + typeBinding = "(" + (map['v-bind']) + ").type"; + } + + if (typeBinding) { + var ifCondition = getAndRemoveAttr(el, 'v-if', true); + var ifConditionExtra = ifCondition ? ("&&(" + ifCondition + ")") : ""; + var hasElse = getAndRemoveAttr(el, 'v-else', true) != null; + var elseIfCondition = getAndRemoveAttr(el, 'v-else-if', true); + // 1. checkbox + var branch0 = cloneASTElement(el); + // process for on the main node + processFor(branch0); + addRawAttr(branch0, 'type', 'checkbox'); + processElement(branch0, options); + branch0.processed = true; // prevent it from double-processed + branch0.if = "(" + typeBinding + ")==='checkbox'" + ifConditionExtra; + addIfCondition(branch0, { + exp: branch0.if, + block: branch0 + }); + // 2. add radio else-if condition + var branch1 = cloneASTElement(el); + getAndRemoveAttr(branch1, 'v-for', true); + addRawAttr(branch1, 'type', 'radio'); + processElement(branch1, options); + addIfCondition(branch0, { + exp: "(" + typeBinding + ")==='radio'" + ifConditionExtra, + block: branch1 + }); + // 3. other + var branch2 = cloneASTElement(el); + getAndRemoveAttr(branch2, 'v-for', true); + addRawAttr(branch2, ':type', typeBinding); + processElement(branch2, options); + addIfCondition(branch0, { + exp: ifCondition, + block: branch2 + }); + + if (hasElse) { + branch0.else = true; + } else if (elseIfCondition) { + branch0.elseif = elseIfCondition; + } + + return branch0 + } + } +} + +function cloneASTElement (el) { + return createASTElement(el.tag, el.attrsList.slice(), el.parent) +} + +var model$1 = { + preTransformNode: preTransformNode +}; + +var modules$1 = [ + klass$1, + style$1, + model$1 +]; + +/* */ + +function text (el, dir) { + if (dir.value) { + addProp(el, 'textContent', ("_s(" + (dir.value) + ")"), dir); + } +} + +/* */ + +function html (el, dir) { + if (dir.value) { + addProp(el, 'innerHTML', ("_s(" + (dir.value) + ")"), dir); + } +} + +var directives$1 = { + model: model, + text: text, + html: html +}; + +/* */ + +var baseOptions = { + expectHTML: true, + modules: modules$1, + directives: directives$1, + isPreTag: isPreTag, + isUnaryTag: isUnaryTag, + mustUseProp: mustUseProp, + canBeLeftOpenTag: canBeLeftOpenTag, + isReservedTag: isReservedTag, + getTagNamespace: getTagNamespace, + staticKeys: genStaticKeys(modules$1) +}; + +/* */ + +var isStaticKey; +var isPlatformReservedTag; + +var genStaticKeysCached = cached(genStaticKeys$1); + +/** + * Goal of the optimizer: walk the generated template AST tree + * and detect sub-trees that are purely static, i.e. parts of + * the DOM that never needs to change. + * + * Once we detect these sub-trees, we can: + * + * 1. Hoist them into constants, so that we no longer need to + * create fresh nodes for them on each re-render; + * 2. Completely skip them in the patching process. + */ +function optimize (root, options) { + if (!root) { return } + isStaticKey = genStaticKeysCached(options.staticKeys || ''); + isPlatformReservedTag = options.isReservedTag || no; + // first pass: mark all non-static nodes. + markStatic$1(root); + // second pass: mark static roots. + markStaticRoots(root, false); +} + +function genStaticKeys$1 (keys) { + return makeMap( + 'type,tag,attrsList,attrsMap,plain,parent,children,attrs,start,end,rawAttrsMap' + + (keys ? ',' + keys : '') + ) +} + +function markStatic$1 (node) { + node.static = isStatic(node); + if (node.type === 1) { + // do not make component slot content static. this avoids + // 1. components not able to mutate slot nodes + // 2. static slot content fails for hot-reloading + if ( + !isPlatformReservedTag(node.tag) && + node.tag !== 'slot' && + node.attrsMap['inline-template'] == null + ) { + return + } + for (var i = 0, l = node.children.length; i < l; i++) { + var child = node.children[i]; + markStatic$1(child); + if (!child.static) { + node.static = false; + } + } + if (node.ifConditions) { + for (var i$1 = 1, l$1 = node.ifConditions.length; i$1 < l$1; i$1++) { + var block = node.ifConditions[i$1].block; + markStatic$1(block); + if (!block.static) { + node.static = false; + } + } + } + } +} + +function markStaticRoots (node, isInFor) { + if (node.type === 1) { + if (node.static || node.once) { + node.staticInFor = isInFor; + } + // For a node to qualify as a static root, it should have children that + // are not just static text. Otherwise the cost of hoisting out will + // outweigh the benefits and it's better off to just always render it fresh. + if (node.static && node.children.length && !( + node.children.length === 1 && + node.children[0].type === 3 + )) { + node.staticRoot = true; + return + } else { + node.staticRoot = false; + } + if (node.children) { + for (var i = 0, l = node.children.length; i < l; i++) { + markStaticRoots(node.children[i], isInFor || !!node.for); + } + } + if (node.ifConditions) { + for (var i$1 = 1, l$1 = node.ifConditions.length; i$1 < l$1; i$1++) { + markStaticRoots(node.ifConditions[i$1].block, isInFor); + } + } + } +} + +function isStatic (node) { + if (node.type === 2) { // expression + return false + } + if (node.type === 3) { // text + return true + } + return !!(node.pre || ( + !node.hasBindings && // no dynamic bindings + !node.if && !node.for && // not v-if or v-for or v-else + !isBuiltInTag(node.tag) && // not a built-in + isPlatformReservedTag(node.tag) && // not a component + !isDirectChildOfTemplateFor(node) && + Object.keys(node).every(isStaticKey) + )) +} + +function isDirectChildOfTemplateFor (node) { + while (node.parent) { + node = node.parent; + if (node.tag !== 'template') { + return false + } + if (node.for) { + return true + } + } + return false +} + +/* */ + +var fnExpRE = /^([\w$_]+|\([^)]*?\))\s*=>|^function\s*(?:[\w$]+)?\s*\(/; +var fnInvokeRE = /\([^)]*?\);*$/; +var simplePathRE = /^[A-Za-z_$][\w$]*(?:\.[A-Za-z_$][\w$]*|\['[^']*?']|\["[^"]*?"]|\[\d+]|\[[A-Za-z_$][\w$]*])*$/; + +// KeyboardEvent.keyCode aliases +var keyCodes = { + esc: 27, + tab: 9, + enter: 13, + space: 32, + up: 38, + left: 37, + right: 39, + down: 40, + 'delete': [8, 46] +}; + +// KeyboardEvent.key aliases +var keyNames = { + // #7880: IE11 and Edge use `Esc` for Escape key name. + esc: ['Esc', 'Escape'], + tab: 'Tab', + enter: 'Enter', + // #9112: IE11 uses `Spacebar` for Space key name. + space: [' ', 'Spacebar'], + // #7806: IE11 uses key names without `Arrow` prefix for arrow keys. + up: ['Up', 'ArrowUp'], + left: ['Left', 'ArrowLeft'], + right: ['Right', 'ArrowRight'], + down: ['Down', 'ArrowDown'], + // #9112: IE11 uses `Del` for Delete key name. + 'delete': ['Backspace', 'Delete', 'Del'] +}; + +// #4868: modifiers that prevent the execution of the listener +// need to explicitly return null so that we can determine whether to remove +// the listener for .once +var genGuard = function (condition) { return ("if(" + condition + ")return null;"); }; + +var modifierCode = { + stop: '$event.stopPropagation();', + prevent: '$event.preventDefault();', + self: genGuard("$event.target !== $event.currentTarget"), + ctrl: genGuard("!$event.ctrlKey"), + shift: genGuard("!$event.shiftKey"), + alt: genGuard("!$event.altKey"), + meta: genGuard("!$event.metaKey"), + left: genGuard("'button' in $event && $event.button !== 0"), + middle: genGuard("'button' in $event && $event.button !== 1"), + right: genGuard("'button' in $event && $event.button !== 2") +}; + +function genHandlers ( + events, + isNative +) { + var prefix = isNative ? 'nativeOn:' : 'on:'; + var staticHandlers = ""; + var dynamicHandlers = ""; + for (var name in events) { + var handlerCode = genHandler(events[name]); + if (events[name] && events[name].dynamic) { + dynamicHandlers += name + "," + handlerCode + ","; + } else { + staticHandlers += "\"" + name + "\":" + handlerCode + ","; + } + } + staticHandlers = "{" + (staticHandlers.slice(0, -1)) + "}"; + if (dynamicHandlers) { + return prefix + "_d(" + staticHandlers + ",[" + (dynamicHandlers.slice(0, -1)) + "])" + } else { + return prefix + staticHandlers + } +} + +function genHandler (handler) { + if (!handler) { + return 'function(){}' + } + + if (Array.isArray(handler)) { + return ("[" + (handler.map(function (handler) { return genHandler(handler); }).join(',')) + "]") + } + + var isMethodPath = simplePathRE.test(handler.value); + var isFunctionExpression = fnExpRE.test(handler.value); + var isFunctionInvocation = simplePathRE.test(handler.value.replace(fnInvokeRE, '')); + + if (!handler.modifiers) { + if (isMethodPath || isFunctionExpression) { + return handler.value + } + return ("function($event){" + (isFunctionInvocation ? ("return " + (handler.value)) : handler.value) + "}") // inline statement + } else { + var code = ''; + var genModifierCode = ''; + var keys = []; + for (var key in handler.modifiers) { + if (modifierCode[key]) { + genModifierCode += modifierCode[key]; + // left/right + if (keyCodes[key]) { + keys.push(key); + } + } else if (key === 'exact') { + var modifiers = (handler.modifiers); + genModifierCode += genGuard( + ['ctrl', 'shift', 'alt', 'meta'] + .filter(function (keyModifier) { return !modifiers[keyModifier]; }) + .map(function (keyModifier) { return ("$event." + keyModifier + "Key"); }) + .join('||') + ); + } else { + keys.push(key); + } + } + if (keys.length) { + code += genKeyFilter(keys); + } + // Make sure modifiers like prevent and stop get executed after key filtering + if (genModifierCode) { + code += genModifierCode; + } + var handlerCode = isMethodPath + ? ("return " + (handler.value) + "($event)") + : isFunctionExpression + ? ("return (" + (handler.value) + ")($event)") + : isFunctionInvocation + ? ("return " + (handler.value)) + : handler.value; + return ("function($event){" + code + handlerCode + "}") + } +} + +function genKeyFilter (keys) { + return ( + // make sure the key filters only apply to KeyboardEvents + // #9441: can't use 'keyCode' in $event because Chrome autofill fires fake + // key events that do not have keyCode property... + "if(!$event.type.indexOf('key')&&" + + (keys.map(genFilterCode).join('&&')) + ")return null;" + ) +} + +function genFilterCode (key) { + var keyVal = parseInt(key, 10); + if (keyVal) { + return ("$event.keyCode!==" + keyVal) + } + var keyCode = keyCodes[key]; + var keyName = keyNames[key]; + return ( + "_k($event.keyCode," + + (JSON.stringify(key)) + "," + + (JSON.stringify(keyCode)) + "," + + "$event.key," + + "" + (JSON.stringify(keyName)) + + ")" + ) +} + +/* */ + +function on (el, dir) { + if (dir.modifiers) { + warn("v-on without argument does not support modifiers."); + } + el.wrapListeners = function (code) { return ("_g(" + code + "," + (dir.value) + ")"); }; +} + +/* */ + +function bind$1 (el, dir) { + el.wrapData = function (code) { + return ("_b(" + code + ",'" + (el.tag) + "'," + (dir.value) + "," + (dir.modifiers && dir.modifiers.prop ? 'true' : 'false') + (dir.modifiers && dir.modifiers.sync ? ',true' : '') + ")") + }; +} + +/* */ + +var baseDirectives = { + on: on, + bind: bind$1, + cloak: noop +}; + +/* */ + + + + + +var CodegenState = function CodegenState (options) { + this.options = options; + this.warn = options.warn || baseWarn; + this.transforms = pluckModuleFunction(options.modules, 'transformCode'); + this.dataGenFns = pluckModuleFunction(options.modules, 'genData'); + this.directives = extend(extend({}, baseDirectives), options.directives); + var isReservedTag = options.isReservedTag || no; + this.maybeComponent = function (el) { return !!el.component || !isReservedTag(el.tag); }; + this.onceId = 0; + this.staticRenderFns = []; + this.pre = false; +}; + + + +function generate ( + ast, + options +) { + var state = new CodegenState(options); + var code = ast ? genElement(ast, state) : '_c("div")'; + return { + render: ("with(this){return " + code + "}"), + staticRenderFns: state.staticRenderFns + } +} + +function genElement (el, state) { + if (el.parent) { + el.pre = el.pre || el.parent.pre; + } + + if (el.staticRoot && !el.staticProcessed) { + return genStatic(el, state) + } else if (el.once && !el.onceProcessed) { + return genOnce(el, state) + } else if (el.for && !el.forProcessed) { + return genFor(el, state) + } else if (el.if && !el.ifProcessed) { + return genIf(el, state) + } else if (el.tag === 'template' && !el.slotTarget && !state.pre) { + return genChildren(el, state) || 'void 0' + } else if (el.tag === 'slot') { + return genSlot(el, state) + } else { + // component or element + var code; + if (el.component) { + code = genComponent(el.component, el, state); + } else { + var data; + if (!el.plain || (el.pre && state.maybeComponent(el))) { + data = genData$2(el, state); + } + + var children = el.inlineTemplate ? null : genChildren(el, state, true); + code = "_c('" + (el.tag) + "'" + (data ? ("," + data) : '') + (children ? ("," + children) : '') + ")"; + } + // module transforms + for (var i = 0; i < state.transforms.length; i++) { + code = state.transforms[i](el, code); + } + return code + } +} + +// hoist static sub-trees out +function genStatic (el, state) { + el.staticProcessed = true; + // Some elements (templates) need to behave differently inside of a v-pre + // node. All pre nodes are static roots, so we can use this as a location to + // wrap a state change and reset it upon exiting the pre node. + var originalPreState = state.pre; + if (el.pre) { + state.pre = el.pre; + } + state.staticRenderFns.push(("with(this){return " + (genElement(el, state)) + "}")); + state.pre = originalPreState; + return ("_m(" + (state.staticRenderFns.length - 1) + (el.staticInFor ? ',true' : '') + ")") +} + +// v-once +function genOnce (el, state) { + el.onceProcessed = true; + if (el.if && !el.ifProcessed) { + return genIf(el, state) + } else if (el.staticInFor) { + var key = ''; + var parent = el.parent; + while (parent) { + if (parent.for) { + key = parent.key; + break + } + parent = parent.parent; + } + if (!key) { + state.warn( + "v-once can only be used inside v-for that is keyed. ", + el.rawAttrsMap['v-once'] + ); + return genElement(el, state) + } + return ("_o(" + (genElement(el, state)) + "," + (state.onceId++) + "," + key + ")") + } else { + return genStatic(el, state) + } +} + +function genIf ( + el, + state, + altGen, + altEmpty +) { + el.ifProcessed = true; // avoid recursion + return genIfConditions(el.ifConditions.slice(), state, altGen, altEmpty) +} + +function genIfConditions ( + conditions, + state, + altGen, + altEmpty +) { + if (!conditions.length) { + return altEmpty || '_e()' + } + + var condition = conditions.shift(); + if (condition.exp) { + return ("(" + (condition.exp) + ")?" + (genTernaryExp(condition.block)) + ":" + (genIfConditions(conditions, state, altGen, altEmpty))) + } else { + return ("" + (genTernaryExp(condition.block))) + } + + // v-if with v-once should generate code like (a)?_m(0):_m(1) + function genTernaryExp (el) { + return altGen + ? altGen(el, state) + : el.once + ? genOnce(el, state) + : genElement(el, state) + } +} + +function genFor ( + el, + state, + altGen, + altHelper +) { + var exp = el.for; + var alias = el.alias; + var iterator1 = el.iterator1 ? ("," + (el.iterator1)) : ''; + var iterator2 = el.iterator2 ? ("," + (el.iterator2)) : ''; + + if (state.maybeComponent(el) && + el.tag !== 'slot' && + el.tag !== 'template' && + !el.key + ) { + state.warn( + "<" + (el.tag) + " v-for=\"" + alias + " in " + exp + "\">: component lists rendered with " + + "v-for should have explicit keys. " + + "See https://vuejs.org/guide/list.html#key for more info.", + el.rawAttrsMap['v-for'], + true /* tip */ + ); + } + + el.forProcessed = true; // avoid recursion + return (altHelper || '_l') + "((" + exp + ")," + + "function(" + alias + iterator1 + iterator2 + "){" + + "return " + ((altGen || genElement)(el, state)) + + '})' +} + +function genData$2 (el, state) { + var data = '{'; + + // directives first. + // directives may mutate the el's other properties before they are generated. + var dirs = genDirectives(el, state); + if (dirs) { data += dirs + ','; } + + // key + if (el.key) { + data += "key:" + (el.key) + ","; + } + // ref + if (el.ref) { + data += "ref:" + (el.ref) + ","; + } + if (el.refInFor) { + data += "refInFor:true,"; + } + // pre + if (el.pre) { + data += "pre:true,"; + } + // record original tag name for components using "is" attribute + if (el.component) { + data += "tag:\"" + (el.tag) + "\","; + } + // module data generation functions + for (var i = 0; i < state.dataGenFns.length; i++) { + data += state.dataGenFns[i](el); + } + // attributes + if (el.attrs) { + data += "attrs:" + (genProps(el.attrs)) + ","; + } + // DOM props + if (el.props) { + data += "domProps:" + (genProps(el.props)) + ","; + } + // event handlers + if (el.events) { + data += (genHandlers(el.events, false)) + ","; + } + if (el.nativeEvents) { + data += (genHandlers(el.nativeEvents, true)) + ","; + } + // slot target + // only for non-scoped slots + if (el.slotTarget && !el.slotScope) { + data += "slot:" + (el.slotTarget) + ","; + } + // scoped slots + if (el.scopedSlots) { + data += (genScopedSlots(el, el.scopedSlots, state)) + ","; + } + // component v-model + if (el.model) { + data += "model:{value:" + (el.model.value) + ",callback:" + (el.model.callback) + ",expression:" + (el.model.expression) + "},"; + } + // inline-template + if (el.inlineTemplate) { + var inlineTemplate = genInlineTemplate(el, state); + if (inlineTemplate) { + data += inlineTemplate + ","; + } + } + data = data.replace(/,$/, '') + '}'; + // v-bind dynamic argument wrap + // v-bind with dynamic arguments must be applied using the same v-bind object + // merge helper so that class/style/mustUseProp attrs are handled correctly. + if (el.dynamicAttrs) { + data = "_b(" + data + ",\"" + (el.tag) + "\"," + (genProps(el.dynamicAttrs)) + ")"; + } + // v-bind data wrap + if (el.wrapData) { + data = el.wrapData(data); + } + // v-on data wrap + if (el.wrapListeners) { + data = el.wrapListeners(data); + } + return data +} + +function genDirectives (el, state) { + var dirs = el.directives; + if (!dirs) { return } + var res = 'directives:['; + var hasRuntime = false; + var i, l, dir, needRuntime; + for (i = 0, l = dirs.length; i < l; i++) { + dir = dirs[i]; + needRuntime = true; + var gen = state.directives[dir.name]; + if (gen) { + // compile-time directive that manipulates AST. + // returns true if it also needs a runtime counterpart. + needRuntime = !!gen(el, dir, state.warn); + } + if (needRuntime) { + hasRuntime = true; + res += "{name:\"" + (dir.name) + "\",rawName:\"" + (dir.rawName) + "\"" + (dir.value ? (",value:(" + (dir.value) + "),expression:" + (JSON.stringify(dir.value))) : '') + (dir.arg ? (",arg:" + (dir.isDynamicArg ? dir.arg : ("\"" + (dir.arg) + "\""))) : '') + (dir.modifiers ? (",modifiers:" + (JSON.stringify(dir.modifiers))) : '') + "},"; + } + } + if (hasRuntime) { + return res.slice(0, -1) + ']' + } +} + +function genInlineTemplate (el, state) { + var ast = el.children[0]; + if (el.children.length !== 1 || ast.type !== 1) { + state.warn( + 'Inline-template components must have exactly one child element.', + { start: el.start } + ); + } + if (ast && ast.type === 1) { + var inlineRenderFns = generate(ast, state.options); + return ("inlineTemplate:{render:function(){" + (inlineRenderFns.render) + "},staticRenderFns:[" + (inlineRenderFns.staticRenderFns.map(function (code) { return ("function(){" + code + "}"); }).join(',')) + "]}") + } +} + +function genScopedSlots ( + el, + slots, + state +) { + // by default scoped slots are considered "stable", this allows child + // components with only scoped slots to skip forced updates from parent. + // but in some cases we have to bail-out of this optimization + // for example if the slot contains dynamic names, has v-if or v-for on them... + var needsForceUpdate = el.for || Object.keys(slots).some(function (key) { + var slot = slots[key]; + return ( + slot.slotTargetDynamic || + slot.if || + slot.for || + containsSlotChild(slot) // is passing down slot from parent which may be dynamic + ) + }); + + // #9534: if a component with scoped slots is inside a conditional branch, + // it's possible for the same component to be reused but with different + // compiled slot content. To avoid that, we generate a unique key based on + // the generated code of all the slot contents. + var needsKey = !!el.if; + + // OR when it is inside another scoped slot or v-for (the reactivity may be + // disconnected due to the intermediate scope variable) + // #9438, #9506 + // TODO: this can be further optimized by properly analyzing in-scope bindings + // and skip force updating ones that do not actually use scope variables. + if (!needsForceUpdate) { + var parent = el.parent; + while (parent) { + if ( + (parent.slotScope && parent.slotScope !== emptySlotScopeToken) || + parent.for + ) { + needsForceUpdate = true; + break + } + if (parent.if) { + needsKey = true; + } + parent = parent.parent; + } + } + + var generatedSlots = Object.keys(slots) + .map(function (key) { return genScopedSlot(slots[key], state); }) + .join(','); + + return ("scopedSlots:_u([" + generatedSlots + "]" + (needsForceUpdate ? ",null,true" : "") + (!needsForceUpdate && needsKey ? (",null,false," + (hash(generatedSlots))) : "") + ")") +} + +function hash(str) { + var hash = 5381; + var i = str.length; + while(i) { + hash = (hash * 33) ^ str.charCodeAt(--i); + } + return hash >>> 0 +} + +function containsSlotChild (el) { + if (el.type === 1) { + if (el.tag === 'slot') { + return true + } + return el.children.some(containsSlotChild) + } + return false +} + +function genScopedSlot ( + el, + state +) { + var isLegacySyntax = el.attrsMap['slot-scope']; + if (el.if && !el.ifProcessed && !isLegacySyntax) { + return genIf(el, state, genScopedSlot, "null") + } + if (el.for && !el.forProcessed) { + return genFor(el, state, genScopedSlot) + } + var slotScope = el.slotScope === emptySlotScopeToken + ? "" + : String(el.slotScope); + var fn = "function(" + slotScope + "){" + + "return " + (el.tag === 'template' + ? el.if && isLegacySyntax + ? ("(" + (el.if) + ")?" + (genChildren(el, state) || 'undefined') + ":undefined") + : genChildren(el, state) || 'undefined' + : genElement(el, state)) + "}"; + // reverse proxy v-slot without scope on this.$slots + var reverseProxy = slotScope ? "" : ",proxy:true"; + return ("{key:" + (el.slotTarget || "\"default\"") + ",fn:" + fn + reverseProxy + "}") +} + +function genChildren ( + el, + state, + checkSkip, + altGenElement, + altGenNode +) { + var children = el.children; + if (children.length) { + var el$1 = children[0]; + // optimize single v-for + if (children.length === 1 && + el$1.for && + el$1.tag !== 'template' && + el$1.tag !== 'slot' + ) { + var normalizationType = checkSkip + ? state.maybeComponent(el$1) ? ",1" : ",0" + : ""; + return ("" + ((altGenElement || genElement)(el$1, state)) + normalizationType) + } + var normalizationType$1 = checkSkip + ? getNormalizationType(children, state.maybeComponent) + : 0; + var gen = altGenNode || genNode; + return ("[" + (children.map(function (c) { return gen(c, state); }).join(',')) + "]" + (normalizationType$1 ? ("," + normalizationType$1) : '')) + } +} + +// determine the normalization needed for the children array. +// 0: no normalization needed +// 1: simple normalization needed (possible 1-level deep nested array) +// 2: full normalization needed +function getNormalizationType ( + children, + maybeComponent +) { + var res = 0; + for (var i = 0; i < children.length; i++) { + var el = children[i]; + if (el.type !== 1) { + continue + } + if (needsNormalization(el) || + (el.ifConditions && el.ifConditions.some(function (c) { return needsNormalization(c.block); }))) { + res = 2; + break + } + if (maybeComponent(el) || + (el.ifConditions && el.ifConditions.some(function (c) { return maybeComponent(c.block); }))) { + res = 1; + } + } + return res +} + +function needsNormalization (el) { + return el.for !== undefined || el.tag === 'template' || el.tag === 'slot' +} + +function genNode (node, state) { + if (node.type === 1) { + return genElement(node, state) + } else if (node.type === 3 && node.isComment) { + return genComment(node) + } else { + return genText(node) + } +} + +function genText (text) { + return ("_v(" + (text.type === 2 + ? text.expression // no need for () because already wrapped in _s() + : transformSpecialNewlines(JSON.stringify(text.text))) + ")") +} + +function genComment (comment) { + return ("_e(" + (JSON.stringify(comment.text)) + ")") +} + +function genSlot (el, state) { + var slotName = el.slotName || '"default"'; + var children = genChildren(el, state); + var res = "_t(" + slotName + (children ? ("," + children) : ''); + var attrs = el.attrs || el.dynamicAttrs + ? genProps((el.attrs || []).concat(el.dynamicAttrs || []).map(function (attr) { return ({ + // slot props are camelized + name: camelize(attr.name), + value: attr.value, + dynamic: attr.dynamic + }); })) + : null; + var bind$$1 = el.attrsMap['v-bind']; + if ((attrs || bind$$1) && !children) { + res += ",null"; + } + if (attrs) { + res += "," + attrs; + } + if (bind$$1) { + res += (attrs ? '' : ',null') + "," + bind$$1; + } + return res + ')' +} + +// componentName is el.component, take it as argument to shun flow's pessimistic refinement +function genComponent ( + componentName, + el, + state +) { + var children = el.inlineTemplate ? null : genChildren(el, state, true); + return ("_c(" + componentName + "," + (genData$2(el, state)) + (children ? ("," + children) : '') + ")") +} + +function genProps (props) { + var staticProps = ""; + var dynamicProps = ""; + for (var i = 0; i < props.length; i++) { + var prop = props[i]; + var value = transformSpecialNewlines(prop.value); + if (prop.dynamic) { + dynamicProps += (prop.name) + "," + value + ","; + } else { + staticProps += "\"" + (prop.name) + "\":" + value + ","; + } + } + staticProps = "{" + (staticProps.slice(0, -1)) + "}"; + if (dynamicProps) { + return ("_d(" + staticProps + ",[" + (dynamicProps.slice(0, -1)) + "])") + } else { + return staticProps + } +} + +// #3895, #4268 +function transformSpecialNewlines (text) { + return text + .replace(/\u2028/g, '\\u2028') + .replace(/\u2029/g, '\\u2029') +} + +/* */ + + + +// these keywords should not appear inside expressions, but operators like +// typeof, instanceof and in are allowed +var prohibitedKeywordRE = new RegExp('\\b' + ( + 'do,if,for,let,new,try,var,case,else,with,await,break,catch,class,const,' + + 'super,throw,while,yield,delete,export,import,return,switch,default,' + + 'extends,finally,continue,debugger,function,arguments' +).split(',').join('\\b|\\b') + '\\b'); + +// these unary operators should not be used as property/method names +var unaryOperatorsRE = new RegExp('\\b' + ( + 'delete,typeof,void' +).split(',').join('\\s*\\([^\\)]*\\)|\\b') + '\\s*\\([^\\)]*\\)'); + +// strip strings in expressions +var stripStringRE = /'(?:[^'\\]|\\.)*'|"(?:[^"\\]|\\.)*"|`(?:[^`\\]|\\.)*\$\{|\}(?:[^`\\]|\\.)*`|`(?:[^`\\]|\\.)*`/g; + +// detect problematic expressions in a template +function detectErrors (ast, warn) { + if (ast) { + checkNode(ast, warn); + } +} + +function checkNode (node, warn) { + if (node.type === 1) { + for (var name in node.attrsMap) { + if (dirRE.test(name)) { + var value = node.attrsMap[name]; + if (value) { + var range = node.rawAttrsMap[name]; + if (name === 'v-for') { + checkFor(node, ("v-for=\"" + value + "\""), warn, range); + } else if (onRE.test(name)) { + checkEvent(value, (name + "=\"" + value + "\""), warn, range); + } else { + checkExpression(value, (name + "=\"" + value + "\""), warn, range); + } + } + } + } + if (node.children) { + for (var i = 0; i < node.children.length; i++) { + checkNode(node.children[i], warn); + } + } + } else if (node.type === 2) { + checkExpression(node.expression, node.text, warn, node); + } +} + +function checkEvent (exp, text, warn, range) { + var stipped = exp.replace(stripStringRE, ''); + var keywordMatch = stipped.match(unaryOperatorsRE); + if (keywordMatch && stipped.charAt(keywordMatch.index - 1) !== '$') { + warn( + "avoid using JavaScript unary operator as property name: " + + "\"" + (keywordMatch[0]) + "\" in expression " + (text.trim()), + range + ); + } + checkExpression(exp, text, warn, range); +} + +function checkFor (node, text, warn, range) { + checkExpression(node.for || '', text, warn, range); + checkIdentifier(node.alias, 'v-for alias', text, warn, range); + checkIdentifier(node.iterator1, 'v-for iterator', text, warn, range); + checkIdentifier(node.iterator2, 'v-for iterator', text, warn, range); +} + +function checkIdentifier ( + ident, + type, + text, + warn, + range +) { + if (typeof ident === 'string') { + try { + new Function(("var " + ident + "=_")); + } catch (e) { + warn(("invalid " + type + " \"" + ident + "\" in expression: " + (text.trim())), range); + } + } +} + +function checkExpression (exp, text, warn, range) { + try { + new Function(("return " + exp)); + } catch (e) { + var keywordMatch = exp.replace(stripStringRE, '').match(prohibitedKeywordRE); + if (keywordMatch) { + warn( + "avoid using JavaScript keyword as property name: " + + "\"" + (keywordMatch[0]) + "\"\n Raw expression: " + (text.trim()), + range + ); + } else { + warn( + "invalid expression: " + (e.message) + " in\n\n" + + " " + exp + "\n\n" + + " Raw expression: " + (text.trim()) + "\n", + range + ); + } + } +} + +/* */ + +var range = 2; + +function generateCodeFrame ( + source, + start, + end +) { + if ( start === void 0 ) start = 0; + if ( end === void 0 ) end = source.length; + + var lines = source.split(/\r?\n/); + var count = 0; + var res = []; + for (var i = 0; i < lines.length; i++) { + count += lines[i].length + 1; + if (count >= start) { + for (var j = i - range; j <= i + range || end > count; j++) { + if (j < 0 || j >= lines.length) { continue } + res.push(("" + (j + 1) + (repeat$1(" ", 3 - String(j + 1).length)) + "| " + (lines[j]))); + var lineLength = lines[j].length; + if (j === i) { + // push underline + var pad = start - (count - lineLength) + 1; + var length = end > count ? lineLength - pad : end - start; + res.push(" | " + repeat$1(" ", pad) + repeat$1("^", length)); + } else if (j > i) { + if (end > count) { + var length$1 = Math.min(end - count, lineLength); + res.push(" | " + repeat$1("^", length$1)); + } + count += lineLength + 1; + } + } + break + } + } + return res.join('\n') +} + +function repeat$1 (str, n) { + var result = ''; + if (n > 0) { + while (true) { // eslint-disable-line + if (n & 1) { result += str; } + n >>>= 1; + if (n <= 0) { break } + str += str; + } + } + return result +} + +/* */ + + + +function createFunction (code, errors) { + try { + return new Function(code) + } catch (err) { + errors.push({ err: err, code: code }); + return noop + } +} + +function createCompileToFunctionFn (compile) { + var cache = Object.create(null); + + return function compileToFunctions ( + template, + options, + vm + ) { + options = extend({}, options); + var warn$$1 = options.warn || warn; + delete options.warn; + + /* istanbul ignore if */ + { + // detect possible CSP restriction + try { + new Function('return 1'); + } catch (e) { + if (e.toString().match(/unsafe-eval|CSP/)) { + warn$$1( + 'It seems you are using the standalone build of Vue.js in an ' + + 'environment with Content Security Policy that prohibits unsafe-eval. ' + + 'The template compiler cannot work in this environment. Consider ' + + 'relaxing the policy to allow unsafe-eval or pre-compiling your ' + + 'templates into render functions.' + ); + } + } + } + + // check cache + var key = options.delimiters + ? String(options.delimiters) + template + : template; + if (cache[key]) { + return cache[key] + } + + // compile + var compiled = compile(template, options); + + // check compilation errors/tips + { + if (compiled.errors && compiled.errors.length) { + if (options.outputSourceRange) { + compiled.errors.forEach(function (e) { + warn$$1( + "Error compiling template:\n\n" + (e.msg) + "\n\n" + + generateCodeFrame(template, e.start, e.end), + vm + ); + }); + } else { + warn$$1( + "Error compiling template:\n\n" + template + "\n\n" + + compiled.errors.map(function (e) { return ("- " + e); }).join('\n') + '\n', + vm + ); + } + } + if (compiled.tips && compiled.tips.length) { + if (options.outputSourceRange) { + compiled.tips.forEach(function (e) { return tip(e.msg, vm); }); + } else { + compiled.tips.forEach(function (msg) { return tip(msg, vm); }); + } + } + } + + // turn code into functions + var res = {}; + var fnGenErrors = []; + res.render = createFunction(compiled.render, fnGenErrors); + res.staticRenderFns = compiled.staticRenderFns.map(function (code) { + return createFunction(code, fnGenErrors) + }); + + // check function generation errors. + // this should only happen if there is a bug in the compiler itself. + // mostly for codegen development use + /* istanbul ignore if */ + { + if ((!compiled.errors || !compiled.errors.length) && fnGenErrors.length) { + warn$$1( + "Failed to generate render function:\n\n" + + fnGenErrors.map(function (ref) { + var err = ref.err; + var code = ref.code; + + return ((err.toString()) + " in\n\n" + code + "\n"); + }).join('\n'), + vm + ); + } + } + + return (cache[key] = res) + } +} + +/* */ + +function createCompilerCreator (baseCompile) { + return function createCompiler (baseOptions) { + function compile ( + template, + options + ) { + var finalOptions = Object.create(baseOptions); + var errors = []; + var tips = []; + + var warn = function (msg, range, tip) { + (tip ? tips : errors).push(msg); + }; + + if (options) { + if (options.outputSourceRange) { + // $flow-disable-line + var leadingSpaceLength = template.match(/^\s*/)[0].length; + + warn = function (msg, range, tip) { + var data = { msg: msg }; + if (range) { + if (range.start != null) { + data.start = range.start + leadingSpaceLength; + } + if (range.end != null) { + data.end = range.end + leadingSpaceLength; + } + } + (tip ? tips : errors).push(data); + }; + } + // merge custom modules + if (options.modules) { + finalOptions.modules = + (baseOptions.modules || []).concat(options.modules); + } + // merge custom directives + if (options.directives) { + finalOptions.directives = extend( + Object.create(baseOptions.directives || null), + options.directives + ); + } + // copy other options + for (var key in options) { + if (key !== 'modules' && key !== 'directives') { + finalOptions[key] = options[key]; + } + } + } + + finalOptions.warn = warn; + + var compiled = baseCompile(template.trim(), finalOptions); + { + detectErrors(compiled.ast, warn); + } + compiled.errors = errors; + compiled.tips = tips; + return compiled + } + + return { + compile: compile, + compileToFunctions: createCompileToFunctionFn(compile) + } + } +} + +/* */ + +// `createCompilerCreator` allows creating compilers that use alternative +// parser/optimizer/codegen, e.g the SSR optimizing compiler. +// Here we just export a default compiler using the default parts. +var createCompiler = createCompilerCreator(function baseCompile ( + template, + options +) { + var ast = parse(template.trim(), options); + if (options.optimize !== false) { + optimize(ast, options); + } + var code = generate(ast, options); + return { + ast: ast, + render: code.render, + staticRenderFns: code.staticRenderFns + } +}); + +/* */ + +var ref$1 = createCompiler(baseOptions); +var compile = ref$1.compile; +var compileToFunctions = ref$1.compileToFunctions; + +/* */ + +// check whether current browser encodes a char inside attribute values +var div; +function getShouldDecode (href) { + div = div || document.createElement('div'); + div.innerHTML = href ? "<a href=\"\n\"/>" : "<div a=\"\n\"/>"; + return div.innerHTML.indexOf(' ') > 0 +} + +// #3663: IE encodes newlines inside attribute values while other browsers don't +var shouldDecodeNewlines = inBrowser ? getShouldDecode(false) : false; +// #6828: chrome encodes content in a[href] +var shouldDecodeNewlinesForHref = inBrowser ? getShouldDecode(true) : false; + +/* */ + +var idToTemplate = cached(function (id) { + var el = query(id); + return el && el.innerHTML +}); + +var mount = Vue.prototype.$mount; +Vue.prototype.$mount = function ( + el, + hydrating +) { + el = el && query(el); + + /* istanbul ignore if */ + if (el === document.body || el === document.documentElement) { + warn( + "Do not mount Vue to <html> or <body> - mount to normal elements instead." + ); + return this + } + + var options = this.$options; + // resolve template/el and convert to render function + if (!options.render) { + var template = options.template; + if (template) { + if (typeof template === 'string') { + if (template.charAt(0) === '#') { + template = idToTemplate(template); + /* istanbul ignore if */ + if (!template) { + warn( + ("Template element not found or is empty: " + (options.template)), + this + ); + } + } + } else if (template.nodeType) { + template = template.innerHTML; + } else { + { + warn('invalid template option:' + template, this); + } + return this + } + } else if (el) { + template = getOuterHTML(el); + } + if (template) { + /* istanbul ignore if */ + if (config.performance && mark) { + mark('compile'); + } + + var ref = compileToFunctions(template, { + outputSourceRange: "development" !== 'production', + shouldDecodeNewlines: shouldDecodeNewlines, + shouldDecodeNewlinesForHref: shouldDecodeNewlinesForHref, + delimiters: options.delimiters, + comments: options.comments + }, this); + var render = ref.render; + var staticRenderFns = ref.staticRenderFns; + options.render = render; + options.staticRenderFns = staticRenderFns; + + /* istanbul ignore if */ + if (config.performance && mark) { + mark('compile end'); + measure(("vue " + (this._name) + " compile"), 'compile', 'compile end'); + } + } + } + return mount.call(this, el, hydrating) +}; + +/** + * Get outerHTML of elements, taking care + * of SVG elements in IE as well. + */ +function getOuterHTML (el) { + if (el.outerHTML) { + return el.outerHTML + } else { + var container = document.createElement('div'); + container.appendChild(el.cloneNode(true)); + return container.innerHTML + } +} + +Vue.compile = compileToFunctions; + +module.exports = Vue; + +/* WEBPACK VAR INJECTION */}.call(this, __webpack_require__(/*! ./../../webpack/buildin/global.js */ "./node_modules/webpack/buildin/global.js"), __webpack_require__(/*! ./../../timers-browserify/main.js */ "./node_modules/timers-browserify/main.js").setImmediate)) + +/***/ }), + +/***/ "./node_modules/vue/dist/vue.common.js": +/*!*********************************************!*\ + !*** ./node_modules/vue/dist/vue.common.js ***! + \*********************************************/ +/*! no static exports found */ +/***/ (function(module, exports, __webpack_require__) { + +if (false) {} else { + module.exports = __webpack_require__(/*! ./vue.common.dev.js */ "./node_modules/vue/dist/vue.common.dev.js") +} + + +/***/ }), + +/***/ "./node_modules/webpack/buildin/global.js": +/*!***********************************!*\ + !*** (webpack)/buildin/global.js ***! + \***********************************/ +/*! no static exports found */ +/***/ (function(module, exports) { + +var g; + +// This works in non-strict mode +g = (function() { + return this; +})(); + +try { + // This works if eval is allowed (see CSP) + g = g || new Function("return this")(); +} catch (e) { + // This works if the window reference is available + if (typeof window === "object") g = window; +} + +// g can still be undefined, but nothing to do about it... +// We return undefined, instead of nothing here, so it's +// easier to handle this case. if(!global) { ...} + +module.exports = g; + + +/***/ }), + +/***/ "./node_modules/webpack/buildin/module.js": +/*!***********************************!*\ + !*** (webpack)/buildin/module.js ***! + \***********************************/ +/*! no static exports found */ +/***/ (function(module, exports) { + +module.exports = function(module) { + if (!module.webpackPolyfill) { + module.deprecate = function() {}; + module.paths = []; + // module.parent = undefined by default + if (!module.children) module.children = []; + Object.defineProperty(module, "loaded", { + enumerable: true, + get: function() { + return module.l; + } + }); + Object.defineProperty(module, "id", { + enumerable: true, + get: function() { + return module.i; + } + }); + module.webpackPolyfill = 1; + } + return module; +}; + + +/***/ }), + +/***/ "./resources/js sync recursive \\.vue$/": +/*!***********************************!*\ + !*** ./resources/js sync \.vue$/ ***! + \***********************************/ +/*! no static exports found */ +/***/ (function(module, exports, __webpack_require__) { + +var map = { + "./components/chessTable.vue": "./resources/js/components/chessTable.vue" +}; + + +function webpackContext(req) { + var id = webpackContextResolve(req); + return __webpack_require__(id); +} +function webpackContextResolve(req) { + if(!__webpack_require__.o(map, req)) { + var e = new Error("Cannot find module '" + req + "'"); + e.code = 'MODULE_NOT_FOUND'; + throw e; + } + return map[req]; +} +webpackContext.keys = function webpackContextKeys() { + return Object.keys(map); +}; +webpackContext.resolve = webpackContextResolve; +module.exports = webpackContext; +webpackContext.id = "./resources/js sync recursive \\.vue$/"; + +/***/ }), + +/***/ "./resources/js/app.js": +/*!*****************************!*\ + !*** ./resources/js/app.js ***! + \*****************************/ +/*! no exports provided */ +/***/ (function(module, __webpack_exports__, __webpack_require__) { + +"use strict"; +__webpack_require__.r(__webpack_exports__); +/* harmony import */ var vue_chessboard_dist_vue_chessboard_browser_js__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! vue-chessboard/dist/vue-chessboard.browser.js */ "./node_modules/vue-chessboard/dist/vue-chessboard.browser.js"); +/* harmony import */ var vue_chessboard_dist_vue_chessboard_browser_js__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(vue_chessboard_dist_vue_chessboard_browser_js__WEBPACK_IMPORTED_MODULE_0__); +/** + * First we will load all of this project's JavaScript dependencies which + * includes Vue and other libraries. It is a great starting point when + * building robust, powerful web applications using Vue and Laravel. + */ +__webpack_require__(/*! ./bootstrap */ "./resources/js/bootstrap.js"); + +window.Vue = __webpack_require__(/*! vue */ "./node_modules/vue/dist/vue.common.js"); + + +var files = __webpack_require__("./resources/js sync recursive \\.vue$/"); + +files.keys().map(function (key) { + return Vue.component(key.split('/').pop().split('.')[0], files(key)["default"]); +}); +/** + * Next, we will create a fresh Vue application instance and attach it to + * the page. Then, you may begin adding components to this application + * or customize the JavaScript scaffolding to fit your unique needs. + */ + +var app = new Vue({ + el: '#app' +}); + +/***/ }), + +/***/ "./resources/js/bootstrap.js": +/*!***********************************!*\ + !*** ./resources/js/bootstrap.js ***! + \***********************************/ +/*! no static exports found */ +/***/ (function(module, exports, __webpack_require__) { + +window._ = __webpack_require__(/*! lodash */ "./node_modules/lodash/lodash.js"); +/** + * We'll load the axios HTTP library which allows us to easily issue requests + * to our Laravel back-end. This library automatically handles sending the + * CSRF token as a header based on the value of the "XSRF" token cookie. + */ + +window.axios = __webpack_require__(/*! axios */ "./node_modules/axios/index.js"); +window.axios.defaults.headers.common['X-Requested-With'] = 'XMLHttpRequest'; +/** + * Echo exposes an expressive API for subscribing to channels and listening + * for events that are broadcast by Laravel. Echo and event broadcasting + * allows your team to easily build robust real-time web applications. + */ +// import Echo from 'laravel-echo'; +// window.Pusher = require('pusher-js'); +// window.Echo = new Echo({ +// broadcaster: 'pusher', +// key: process.env.MIX_PUSHER_APP_KEY, +// cluster: process.env.MIX_PUSHER_APP_CLUSTER, +// encrypted: true +// }); + +/***/ }), + +/***/ "./resources/js/components/chessTable.vue": +/*!************************************************!*\ + !*** ./resources/js/components/chessTable.vue ***! + \************************************************/ +/*! exports provided: default */ +/***/ (function(module, __webpack_exports__, __webpack_require__) { + +"use strict"; +__webpack_require__.r(__webpack_exports__); +/* harmony import */ var _chessTable_vue_vue_type_template_id_a1d2c38e___WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./chessTable.vue?vue&type=template&id=a1d2c38e& */ "./resources/js/components/chessTable.vue?vue&type=template&id=a1d2c38e&"); +/* harmony import */ var _chessTable_vue_vue_type_script_lang_js___WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ./chessTable.vue?vue&type=script&lang=js& */ "./resources/js/components/chessTable.vue?vue&type=script&lang=js&"); +/* empty/unused harmony star reexport *//* harmony import */ var _node_modules_vue_loader_lib_runtime_componentNormalizer_js__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(/*! ../../../node_modules/vue-loader/lib/runtime/componentNormalizer.js */ "./node_modules/vue-loader/lib/runtime/componentNormalizer.js"); + + + + + +/* normalize component */ + +var component = Object(_node_modules_vue_loader_lib_runtime_componentNormalizer_js__WEBPACK_IMPORTED_MODULE_2__["default"])( + _chessTable_vue_vue_type_script_lang_js___WEBPACK_IMPORTED_MODULE_1__["default"], + _chessTable_vue_vue_type_template_id_a1d2c38e___WEBPACK_IMPORTED_MODULE_0__["render"], + _chessTable_vue_vue_type_template_id_a1d2c38e___WEBPACK_IMPORTED_MODULE_0__["staticRenderFns"], + false, + null, + null, + null + +) + +/* hot reload */ +if (false) { var api; } +component.options.__file = "resources/js/components/chessTable.vue" +/* harmony default export */ __webpack_exports__["default"] = (component.exports); + +/***/ }), + +/***/ "./resources/js/components/chessTable.vue?vue&type=script&lang=js&": +/*!*************************************************************************!*\ + !*** ./resources/js/components/chessTable.vue?vue&type=script&lang=js& ***! + \*************************************************************************/ +/*! exports provided: default */ +/***/ (function(module, __webpack_exports__, __webpack_require__) { + +"use strict"; +__webpack_require__.r(__webpack_exports__); +/* harmony import */ var _node_modules_babel_loader_lib_index_js_ref_4_0_node_modules_vue_loader_lib_index_js_vue_loader_options_chessTable_vue_vue_type_script_lang_js___WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! -!../../../node_modules/babel-loader/lib??ref--4-0!../../../node_modules/vue-loader/lib??vue-loader-options!./chessTable.vue?vue&type=script&lang=js& */ "./node_modules/babel-loader/lib/index.js?!./node_modules/vue-loader/lib/index.js?!./resources/js/components/chessTable.vue?vue&type=script&lang=js&"); +/* empty/unused harmony star reexport */ /* harmony default export */ __webpack_exports__["default"] = (_node_modules_babel_loader_lib_index_js_ref_4_0_node_modules_vue_loader_lib_index_js_vue_loader_options_chessTable_vue_vue_type_script_lang_js___WEBPACK_IMPORTED_MODULE_0__["default"]); + +/***/ }), + +/***/ "./resources/js/components/chessTable.vue?vue&type=template&id=a1d2c38e&": +/*!*******************************************************************************!*\ + !*** ./resources/js/components/chessTable.vue?vue&type=template&id=a1d2c38e& ***! + \*******************************************************************************/ +/*! exports provided: render, staticRenderFns */ +/***/ (function(module, __webpack_exports__, __webpack_require__) { + +"use strict"; +__webpack_require__.r(__webpack_exports__); +/* harmony import */ var _node_modules_vue_loader_lib_loaders_templateLoader_js_vue_loader_options_node_modules_vue_loader_lib_index_js_vue_loader_options_chessTable_vue_vue_type_template_id_a1d2c38e___WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! -!../../../node_modules/vue-loader/lib/loaders/templateLoader.js??vue-loader-options!../../../node_modules/vue-loader/lib??vue-loader-options!./chessTable.vue?vue&type=template&id=a1d2c38e& */ "./node_modules/vue-loader/lib/loaders/templateLoader.js?!./node_modules/vue-loader/lib/index.js?!./resources/js/components/chessTable.vue?vue&type=template&id=a1d2c38e&"); +/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "render", function() { return _node_modules_vue_loader_lib_loaders_templateLoader_js_vue_loader_options_node_modules_vue_loader_lib_index_js_vue_loader_options_chessTable_vue_vue_type_template_id_a1d2c38e___WEBPACK_IMPORTED_MODULE_0__["render"]; }); + +/* harmony reexport (safe) */ __webpack_require__.d(__webpack_exports__, "staticRenderFns", function() { return _node_modules_vue_loader_lib_loaders_templateLoader_js_vue_loader_options_node_modules_vue_loader_lib_index_js_vue_loader_options_chessTable_vue_vue_type_template_id_a1d2c38e___WEBPACK_IMPORTED_MODULE_0__["staticRenderFns"]; }); + + + +/***/ }), + +/***/ "./resources/sass/app.scss": +/*!*********************************!*\ + !*** ./resources/sass/app.scss ***! + \*********************************/ +/*! no static exports found */ +/***/ (function(module, exports) { + +// removed by extract-text-webpack-plugin + +/***/ }), + +/***/ 0: +/*!*************************************************************!*\ + !*** multi ./resources/js/app.js ./resources/sass/app.scss ***! + \*************************************************************/ +/*! no static exports found */ +/***/ (function(module, exports, __webpack_require__) { + +__webpack_require__(/*! /Users/philipburton/projects/chess/resources/js/app.js */"./resources/js/app.js"); +module.exports = __webpack_require__(/*! /Users/philipburton/projects/chess/resources/sass/app.scss */"./resources/sass/app.scss"); + + +/***/ }) + +/******/ });
\ No newline at end of file diff --git a/public/mix-manifest.json b/public/mix-manifest.json new file mode 100644 index 0000000..2d60117 --- /dev/null +++ b/public/mix-manifest.json @@ -0,0 +1,4 @@ +{ + "/js/app.js": "/js/app.js", + "/css/app.css": "/css/app.css" +} diff --git a/resources/js/app.js b/resources/js/app.js index 40c55f6..c34da8c 100644 --- a/resources/js/app.js +++ b/resources/js/app.js @@ -1 +1,24 @@ +/** + * First we will load all of this project's JavaScript dependencies which + * includes Vue and other libraries. It is a great starting point when + * building robust, powerful web applications using Vue and Laravel. + */ + require('./bootstrap'); + +window.Vue = require('vue'); +import 'vue-chessboard/dist/vue-chessboard.browser.js'; + +const files = require.context('./', true, /\.vue$/i) +files.keys().map(key => Vue.component(key.split('/').pop().split('.')[0], files(key).default)) + +/** + * Next, we will create a fresh Vue application instance and attach it to + * the page. Then, you may begin adding components to this application + * or customize the JavaScript scaffolding to fit your unique needs. + */ + +const app = new Vue({ + el: '#app' +}); + diff --git a/resources/js/components/chessTable.vue b/resources/js/components/chessTable.vue new file mode 100644 index 0000000..45eeb99 --- /dev/null +++ b/resources/js/components/chessTable.vue @@ -0,0 +1,33 @@ +<template> + <div class=""> + <chessboard :showThreats="showThreats" @onMove="showInfo"></chessboard> + </div> + +</template> + +<script> +import {chessboard} from 'vue-chessboard' +import jQuery from 'jquery' + +export default { + name: 'App', + components: { + chessboard + }, + data () { + return { + currentPosition: {}, + showThreats: false, + positionNumber: 0, + started: false, + isStartModalActive: true, + positionInfo: {}, + } + }, + methods: { + showInfo(info) { + this.positionInfo = info + } + } +} +</script>
\ No newline at end of file diff --git a/resources/sass/app.scss b/resources/sass/app.scss index 8337712..c03e2bb 100644 --- a/resources/sass/app.scss +++ b/resources/sass/app.scss @@ -1 +1,2 @@ // +@import '~vue-chessboard/dist/vue-chessboard.css';
\ No newline at end of file diff --git a/resources/views/chess.blade.php b/resources/views/chess.blade.php new file mode 100644 index 0000000..1c87bf2 --- /dev/null +++ b/resources/views/chess.blade.php @@ -0,0 +1,13 @@ +<!DOCTYPE html> +<html lang="en" dir="ltr"> + <head> + <meta charset="utf-8"> + <title></title> + </head> + <body> + <div id="app"> + <chess-table></chess-table> + </div> + <script src="js/app.js"></script> + </body> +</html>
\ No newline at end of file diff --git a/routes/web.php b/routes/web.php index 810aa34..83c4088 100644 --- a/routes/web.php +++ b/routes/web.php @@ -14,3 +14,7 @@ Route::get('/', function () { return view('welcome'); }); + +Route::get('/chess', function () { + return view('chess'); +}); |