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+/******/ (function(modules) { // webpackBootstrap
+/******/ // The module cache
+/******/ var installedModules = {};
+/******/
+/******/ // The require function
+/******/ function __webpack_require__(moduleId) {
+/******/
+/******/ // Check if module is in cache
+/******/ if(installedModules[moduleId]) {
+/******/ return installedModules[moduleId].exports;
+/******/ }
+/******/ // Create a new module (and put it into the cache)
+/******/ var module = installedModules[moduleId] = {
+/******/ i: moduleId,
+/******/ l: false,
+/******/ exports: {}
+/******/ };
+/******/
+/******/ // Execute the module function
+/******/ modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);
+/******/
+/******/ // Flag the module as loaded
+/******/ module.l = true;
+/******/
+/******/ // Return the exports of the module
+/******/ return module.exports;
+/******/ }
+/******/
+/******/
+/******/ // expose the modules object (__webpack_modules__)
+/******/ __webpack_require__.m = modules;
+/******/
+/******/ // expose the module cache
+/******/ __webpack_require__.c = installedModules;
+/******/
+/******/ // define getter function for harmony exports
+/******/ __webpack_require__.d = function(exports, name, getter) {
+/******/ if(!__webpack_require__.o(exports, name)) {
+/******/ Object.defineProperty(exports, name, { enumerable: true, get: getter });
+/******/ }
+/******/ };
+/******/
+/******/ // define __esModule on exports
+/******/ __webpack_require__.r = function(exports) {
+/******/ if(typeof Symbol !== 'undefined' && Symbol.toStringTag) {
+/******/ Object.defineProperty(exports, Symbol.toStringTag, { value: 'Module' });
+/******/ }
+/******/ Object.defineProperty(exports, '__esModule', { value: true });
+/******/ };
+/******/
+/******/ // create a fake namespace object
+/******/ // mode & 1: value is a module id, require it
+/******/ // mode & 2: merge all properties of value into the ns
+/******/ // mode & 4: return value when already ns object
+/******/ // mode & 8|1: behave like require
+/******/ __webpack_require__.t = function(value, mode) {
+/******/ if(mode & 1) value = __webpack_require__(value);
+/******/ if(mode & 8) return value;
+/******/ if((mode & 4) && typeof value === 'object' && value && value.__esModule) return value;
+/******/ var ns = Object.create(null);
+/******/ __webpack_require__.r(ns);
+/******/ Object.defineProperty(ns, 'default', { enumerable: true, value: value });
+/******/ if(mode & 2 && typeof value != 'string') for(var key in value) __webpack_require__.d(ns, key, function(key) { return value[key]; }.bind(null, key));
+/******/ return ns;
+/******/ };
+/******/
+/******/ // getDefaultExport function for compatibility with non-harmony modules
+/******/ __webpack_require__.n = function(module) {
+/******/ var getter = module && 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: url('data:image/svg+xml;base64,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');\n}\n.merida .cg-board piece.pawn.white {\n background-image: url('data:image/svg+xml;base64,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');\n}\n.merida .cg-board piece.bishop.white {\n background-image: 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.cg-board piece.knight.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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""]);
+
+// 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 = {
+ '&': '&amp;',
+ '<': '&lt;',
+ '>': '&gt;',
+ '"': '&quot;',
+ "'": '&#39;'
+ };
+
+ /** Used to map HTML entities to characters. */
+ var htmlUnescapes = {
+ '&amp;': '&',
+ '&lt;': '<',
+ '&gt;': '>',
+ '&quot;': '"',
+ '&#39;': "'"
+ };
+
+ /** 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, &amp; 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, &amp; 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>&lt;script&gt;</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
+ * `&amp;`, `&lt;`, `&gt;`, `&quot;`, and `&#39;` 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, &amp; 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&&current.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&&current.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 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:[]}}]);
+/* WEBPACK VAR INJECTION */}.call(this, __webpack_require__(/*! ./../../webpack/buildin/global.js */ "./node_modules/webpack/buildin/global.js")))
+
+/***/ }),
+
+/***/ "./node_modules/vue-chessboard/dist/vue-chessboard.css":
+/*!*************************************************************!*\
+ !*** ./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 = {
+ '&lt;': '<',
+ '&gt;': '>',
+ '&quot;': '"',
+ '&amp;': '&',
+ '&#10;': '\n',
+ '&#9;': '\t',
+ '&#39;': "'"
+};
+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$1.compileToFunctions;
+
+/* */
+
+// check whether current browser encodes a char inside attribute values
+var div;
+function getShouldDecode (href) {
+ div = div || document.createElement('div');
+ div.innerHTML = href ? "<a href=\"\n\"/>" : "<div a=\"\n\"/>";
+ return div.innerHTML.indexOf('&#10;') > 0
+}
+
+// #3663: IE encodes newlines inside attribute values while other browsers don't
+var shouldDecodeNewlines = inBrowser ? getShouldDecode(false) : false;
+// #6828: chrome encodes content in a[href]
+var shouldDecodeNewlinesForHref = inBrowser ? getShouldDecode(true) : false;
+
+/* */
+
+var idToTemplate = cached(function (id) {
+ var el = query(id);
+ return el && el.innerHTML
+});
+
+var mount = Vue.prototype.$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