text: /******/
  (() => { // webpackBootstrap
      /******/
      var __webpack_modules__ = ({
  
          /***/ "./node_modules/axios/index.js":
          /*!*************************************!*\
    !*** ./node_modules/axios/index.js ***!
    \*************************************/
          /***/ ((module, __unused_webpack_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 ***!
    \************************************************/
          /***/ ((module, __unused_webpack_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 cookies = __webpack_require__(/*! ./../helpers/cookies */ "./node_modules/axios/lib/helpers/cookies.js");
              var buildURL = __webpack_require__(/*! ./../helpers/buildURL */ "./node_modules/axios/lib/helpers/buildURL.js");
              var buildFullPath = __webpack_require__(/*! ../core/buildFullPath */ "./node_modules/axios/lib/core/buildFullPath.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;
                      var responseType = config.responseType;
  
                      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 ? unescape(encodeURIComponent(config.auth.password)) : '';
                          requestHeaders.Authorization = 'Basic ' + btoa(username + ':' + password);
                      }
  
                      var fullPath = buildFullPath(config.baseURL, config.url);
                      request.open(config.method.toUpperCase(), buildURL(fullPath, config.params, config.paramsSerializer), true);
  
                      // Set the request timeout in MS
                      request.timeout = config.timeout;
  
                      function onloadend() {
                          if (!request) {
                              return;
                          }
                          // Prepare the response
                          var responseHeaders = 'getAllResponseHeaders' in request ? parseHeaders(request.getAllResponseHeaders()) : null;
                          var responseData = !responseType || responseType === 'text' || responseType === 'json' ?
                              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;
                      }
  
                      if ('onloadend' in request) {
                          // Use onloadend if available
                          request.onloadend = onloadend;
                      } else {
                          // Listen for ready state to emulate onloadend
                          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;
                              }
                              // readystate handler is calling before onerror or ontimeout handlers,
                              // so we should call onloadend on the next 'tick'
                              setTimeout(onloadend);
                          };
                      }
  
                      // 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() {
                          var timeoutErrorMessage = 'timeout of ' + config.timeout + 'ms exceeded';
                          if (config.timeoutErrorMessage) {
                              timeoutErrorMessage = config.timeoutErrorMessage;
                          }
                          reject(createError(
                              timeoutErrorMessage,
                              config,
                              config.transitional && config.transitional.clarifyTimeoutError ? 'ETIMEDOUT' : '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()) {
                          // Add xsrf header
                          var xsrfValue = (config.withCredentials || isURLSameOrigin(fullPath)) && 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 (!utils.isUndefined(config.withCredentials)) {
                          request.withCredentials = !!config.withCredentials;
                      }
  
                      // Add responseType to request if needed
                      if (responseType && responseType !== 'json') {
                          request.responseType = config.responseType;
                      }
  
                      // 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) {
                          requestData = null;
                      }
  
                      // Send the request
                      request.send(requestData);
                  });
              };
  
  
              /***/
          }),
  
          /***/ "./node_modules/axios/lib/axios.js":
          /*!*****************************************!*\
    !*** ./node_modules/axios/lib/axios.js ***!
    \*****************************************/
          /***/ ((module, __unused_webpack_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");
  
  // Expose isAxiosError
              axios.isAxiosError = __webpack_require__(/*! ./helpers/isAxiosError */ "./node_modules/axios/lib/helpers/isAxiosError.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 ***!
    \*************************************************/
          /***/ ((module) => {
  
              "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 ***!
    \******************************************************/
          /***/ ((module, __unused_webpack_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 ***!
    \***************************************************/
          /***/ ((module) => {
  
              "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 ***!
    \**********************************************/
          /***/ ((module, __unused_webpack_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");
              var validator = __webpack_require__(/*! ../helpers/validator */ "./node_modules/axios/lib/helpers/validator.js");
  
              var validators = validator.validators;
  
              /**
               * 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);
  
                  // Set config.method
                  if (config.method) {
                      config.method = config.method.toLowerCase();
                  } else if (this.defaults.method) {
                      config.method = this.defaults.method.toLowerCase();
                  } else {
                      config.method = 'get';
                  }
  
                  var transitional = config.transitional;
  
                  if (transitional !== undefined) {
                      validator.assertOptions(transitional, {
                          silentJSONParsing: validators.transitional(validators.boolean, '1.0.0'),
                          forcedJSONParsing: validators.transitional(validators.boolean, '1.0.0'),
                          clarifyTimeoutError: validators.transitional(validators.boolean, '1.0.0')
                      }, false);
                  }
  
                  // filter out skipped interceptors
                  var requestInterceptorChain = [];
                  var synchronousRequestInterceptors = true;
                  this.interceptors.request.forEach(function unshiftRequestInterceptors(interceptor) {
                      if (typeof interceptor.runWhen === 'function' && interceptor.runWhen(config) === false) {
                          return;
                      }
  
                      synchronousRequestInterceptors = synchronousRequestInterceptors && interceptor.synchronous;
  
                      requestInterceptorChain.unshift(interceptor.fulfilled, interceptor.rejected);
                  });
  
                  var responseInterceptorChain = [];
                  this.interceptors.response.forEach(function pushResponseInterceptors(interceptor) {
                      responseInterceptorChain.push(interceptor.fulfilled, interceptor.rejected);
                  });
  
                  var promise;
  
                  if (!synchronousRequestInterceptors) {
                      var chain = [dispatchRequest, undefined];
  
                      Array.prototype.unshift.apply(chain, requestInterceptorChain);
                      chain = chain.concat(responseInterceptorChain);
  
                      promise = Promise.resolve(config);
                      while (chain.length) {
                          promise = promise.then(chain.shift(), chain.shift());
                      }
  
                      return promise;
                  }
  
  
                  var newConfig = config;
                  while (requestInterceptorChain.length) {
                      var onFulfilled = requestInterceptorChain.shift();
                      var onRejected = requestInterceptorChain.shift();
                      try {
                          newConfig = onFulfilled(newConfig);
                      } catch (error) {
                          onRejected(error);
                          break;
                      }
                  }
  
                  try {
                      promise = dispatchRequest(newConfig);
                  } catch (error) {
                      return Promise.reject(error);
                  }
  
                  while (responseInterceptorChain.length) {
                      promise = promise.then(responseInterceptorChain.shift(), responseInterceptorChain.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(mergeConfig(config || {}, {
                          method: method,
                          url: url,
                          data: (config || {}).data
                      }));
                  };
              });
  
              utils.forEach(['post', 'put', 'patch'], function forEachMethodWithData(method) {
                  /*eslint func-names:0*/
                  Axios.prototype[method] = function (url, data, config) {
                      return this.request(mergeConfig(config || {}, {
                          method: method,
                          url: url,
                          data: data
                      }));
                  };
              });
  
              module.exports = Axios;
  
  
              /***/
          }),
  
          /***/ "./node_modules/axios/lib/core/InterceptorManager.js":
          /*!***********************************************************!*\
    !*** ./node_modules/axios/lib/core/InterceptorManager.js ***!
    \***********************************************************/
          /***/ ((module, __unused_webpack_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, options) {
                  this.handlers.push({
                      fulfilled: fulfilled,
                      rejected: rejected,
                      synchronous: options ? options.synchronous : false,
                      runWhen: options ? options.runWhen : null
                  });
                  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/buildFullPath.js":
          /*!******************************************************!*\
    !*** ./node_modules/axios/lib/core/buildFullPath.js ***!
    \******************************************************/
          /***/ ((module, __unused_webpack_exports, __webpack_require__) => {
  
              "use strict";
  
  
              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");
  
              /**
               * Creates a new URL by combining the baseURL with the requestedURL,
               * only when the requestedURL is not already an absolute URL.
               * If the requestURL is absolute, this function returns the requestedURL untouched.
               *
               * @param {string} baseURL The base URL
               * @param {string} requestedURL Absolute or relative URL to combine
               * @returns {string} The combined full path
               */
              module.exports = function buildFullPath(baseURL, requestedURL) {
                  if (baseURL && !isAbsoluteURL(requestedURL)) {
                      return combineURLs(baseURL, requestedURL);
                  }
                  return requestedURL;
              };
  
  
              /***/
          }),
  
          /***/ "./node_modules/axios/lib/core/createError.js":
          /*!****************************************************!*\
    !*** ./node_modules/axios/lib/core/createError.js ***!
    \****************************************************/
          /***/ ((module, __unused_webpack_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 ***!
    \********************************************************/
          /***/ ((module, __unused_webpack_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");
  
              /**
               * 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);
  
                  // Ensure headers exist
                  config.headers = config.headers || {};
  
                  // Transform request data
                  config.data = transformData.call(
                      config,
                      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.call(
                          config,
                          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.call(
                                  config,
                                  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 ***!
    \*****************************************************/
          /***/ ((module) => {
  
              "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 toJSON() {
                      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 ***!
    \****************************************************/
          /***/ ((module, __unused_webpack_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 = {};
  
                  var valueFromConfig2Keys = ['url', 'method', 'data'];
                  var mergeDeepPropertiesKeys = ['headers', 'auth', 'proxy', 'params'];
                  var defaultToConfig2Keys = [
                      'baseURL', 'transformRequest', 'transformResponse', 'paramsSerializer',
                      'timeout', 'timeoutMessage', 'withCredentials', 'adapter', 'responseType', 'xsrfCookieName',
                      'xsrfHeaderName', 'onUploadProgress', 'onDownloadProgress', 'decompress',
                      'maxContentLength', 'maxBodyLength', 'maxRedirects', 'transport', 'httpAgent',
                      'httpsAgent', 'cancelToken', 'socketPath', 'responseEncoding'
                  ];
                  var directMergeKeys = ['validateStatus'];
  
                  function getMergedValue(target, source) {
                      if (utils.isPlainObject(target) && utils.isPlainObject(source)) {
                          return utils.merge(target, source);
                      } else if (utils.isPlainObject(source)) {
                          return utils.merge({}, source);
                      } else if (utils.isArray(source)) {
                          return source.slice();
                      }
                      return source;
                  }
  
                  function mergeDeepProperties(prop) {
                      if (!utils.isUndefined(config2[prop])) {
                          config[prop] = getMergedValue(config1[prop], config2[prop]);
                      } else if (!utils.isUndefined(config1[prop])) {
                          config[prop] = getMergedValue(undefined, config1[prop]);
                      }
                  }
  
                  utils.forEach(valueFromConfig2Keys, function valueFromConfig2(prop) {
                      if (!utils.isUndefined(config2[prop])) {
                          config[prop] = getMergedValue(undefined, config2[prop]);
                      }
                  });
  
                  utils.forEach(mergeDeepPropertiesKeys, mergeDeepProperties);
  
                  utils.forEach(defaultToConfig2Keys, function defaultToConfig2(prop) {
                      if (!utils.isUndefined(config2[prop])) {
                          config[prop] = getMergedValue(undefined, config2[prop]);
                      } else if (!utils.isUndefined(config1[prop])) {
                          config[prop] = getMergedValue(undefined, config1[prop]);
                      }
                  });
  
                  utils.forEach(directMergeKeys, function merge(prop) {
                      if (prop in config2) {
                          config[prop] = getMergedValue(config1[prop], config2[prop]);
                      } else if (prop in config1) {
                          config[prop] = getMergedValue(undefined, config1[prop]);
                      }
                  });
  
                  var axiosKeys = valueFromConfig2Keys
                      .concat(mergeDeepPropertiesKeys)
                      .concat(defaultToConfig2Keys)
                      .concat(directMergeKeys);
  
                  var otherKeys = Object
                      .keys(config1)
                      .concat(Object.keys(config2))
                      .filter(function filterAxiosKeys(key) {
                          return axiosKeys.indexOf(key) === -1;
                      });
  
                  utils.forEach(otherKeys, mergeDeepProperties);
  
                  return config;
              };
  
  
              /***/
          }),
  
          /***/ "./node_modules/axios/lib/core/settle.js":
          /*!***********************************************!*\
    !*** ./node_modules/axios/lib/core/settle.js ***!
    \***********************************************/
          /***/ ((module, __unused_webpack_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 (!response.status || !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 ***!
    \******************************************************/
          /***/ ((module, __unused_webpack_exports, __webpack_require__) => {
  
              "use strict";
  
  
              var utils = __webpack_require__(/*! ./../utils */ "./node_modules/axios/lib/utils.js");
              var defaults = __webpack_require__(/*! ./../defaults */ "./node_modules/axios/lib/defaults.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) {
                  var context = this || defaults;
                  /*eslint no-param-reassign:0*/
                  utils.forEach(fns, function transform(fn) {
                      data = fn.call(context, data, headers);
                  });
  
                  return data;
              };
  
  
              /***/
          }),
  
          /***/ "./node_modules/axios/lib/defaults.js":
          /*!********************************************!*\
    !*** ./node_modules/axios/lib/defaults.js ***!
    \********************************************/
          /***/ ((module, __unused_webpack_exports, __webpack_require__) => {
  
              "use strict";
              /* provided dependency */
              var process = __webpack_require__(/*! process/browser */ "./node_modules/process/browser.js");
  
  
              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 enhanceError = __webpack_require__(/*! ./core/enhanceError */ "./node_modules/axios/lib/core/enhanceError.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;
                  if (typeof XMLHttpRequest !== 'undefined') {
                      // For browsers use XHR adapter
                      adapter = __webpack_require__(/*! ./adapters/xhr */ "./node_modules/axios/lib/adapters/xhr.js");
                  } else 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");
                  }
                  return adapter;
              }
  
              function stringifySafely(rawValue, parser, encoder) {
                  if (utils.isString(rawValue)) {
                      try {
                          (parser || JSON.parse)(rawValue);
                          return utils.trim(rawValue);
                      } catch (e) {
                          if (e.name !== 'SyntaxError') {
                              throw e;
                          }
                      }
                  }
  
                  return (encoder || JSON.stringify)(rawValue);
              }
  
              var defaults = {
  
                  transitional: {
                      silentJSONParsing: true,
                      forcedJSONParsing: true,
                      clarifyTimeoutError: false
                  },
  
                  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) || (headers && headers['Content-Type'] === 'application/json')) {
                          setContentTypeIfUnset(headers, 'application/json');
                          return stringifySafely(data);
                      }
                      return data;
                  }],
  
                  transformResponse: [function transformResponse(data) {
                      var transitional = this.transitional;
                      var silentJSONParsing = transitional && transitional.silentJSONParsing;
                      var forcedJSONParsing = transitional && transitional.forcedJSONParsing;
                      var strictJSONParsing = !silentJSONParsing && this.responseType === 'json';
  
                      if (strictJSONParsing || (forcedJSONParsing && utils.isString(data) && data.length)) {
                          try {
                              return JSON.parse(data);
                          } catch (e) {
                              if (strictJSONParsing) {
                                  if (e.name === 'SyntaxError') {
                                      throw enhanceError(e, this, 'E_JSON_PARSE');
                                  }
                                  throw e;
                              }
                          }
                      }
  
                      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,
                  maxBodyLength: -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;
  
  
              /***/
          }),
  
          /***/ "./node_modules/axios/lib/helpers/bind.js":
          /*!************************************************!*\
    !*** ./node_modules/axios/lib/helpers/bind.js ***!
    \************************************************/
          /***/ ((module) => {
  
              "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 ***!
    \****************************************************/
          /***/ ((module, __unused_webpack_exports, __webpack_require__) => {
  
              "use strict";
  
  
              var utils = __webpack_require__(/*! ./../utils */ "./node_modules/axios/lib/utils.js");
  
              function encode(val) {
                  return encodeURIComponent(val).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 ***!
    \*******************************************************/
          /***/ ((module) => {
  
              "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 ***!
    \***************************************************/
          /***/ ((module, __unused_webpack_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 ***!
    \*********************************************************/
          /***/ ((module) => {
  
              "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/isAxiosError.js":
          /*!********************************************************!*\
    !*** ./node_modules/axios/lib/helpers/isAxiosError.js ***!
    \********************************************************/
          /***/ ((module) => {
  
              "use strict";
  
  
              /**
               * Determines whether the payload is an error thrown by Axios
               *
               * @param {*} payload The value to test
               * @returns {boolean} True if the payload is an error thrown by Axios, otherwise false
               */
              module.exports = function isAxiosError(payload) {
                  return (typeof payload === 'object') && (payload.isAxiosError === true);
              };
  
  
              /***/
          }),
  
          /***/ "./node_modules/axios/lib/helpers/isURLSameOrigin.js":
          /*!***********************************************************!*\
    !*** ./node_modules/axios/lib/helpers/isURLSameOrigin.js ***!
    \***********************************************************/
          /***/ ((module, __unused_webpack_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 ***!
    \***************************************************************/
          /***/ ((module, __unused_webpack_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 ***!
    \********************************************************/
          /***/ ((module, __unused_webpack_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 ***!
    \**************************************************/
          /***/ ((module) => {
  
              "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/helpers/validator.js":
          /*!*****************************************************!*\
    !*** ./node_modules/axios/lib/helpers/validator.js ***!
    \*****************************************************/
          /***/ ((module, __unused_webpack_exports, __webpack_require__) => {
  
              "use strict";
  
  
              var pkg = __webpack_require__(/*! ./../../package.json */ "./node_modules/axios/package.json");
  
              var validators = {};
  
  // eslint-disable-next-line func-names
              ['object', 'boolean', 'number', 'function', 'string', 'symbol'].forEach(function (type, i) {
                  validators[type] = function validator(thing) {
                      return typeof thing === type || 'a' + (i < 1 ? 'n ' : ' ') + type;
                  };
              });
  
              var deprecatedWarnings = {};
              var currentVerArr = pkg.version.split('.');
  
              /**
               * Compare package versions
               * @param {string} version
               * @param {string?} thanVersion
               * @returns {boolean}
               */
              function isOlderVersion(version, thanVersion) {
                  var pkgVersionArr = thanVersion ? thanVersion.split('.') : currentVerArr;
                  var destVer = version.split('.');
                  for (var i = 0; i < 3; i++) {
                      if (pkgVersionArr[i] > destVer[i]) {
                          return true;
                      } else if (pkgVersionArr[i] < destVer[i]) {
                          return false;
                      }
                  }
                  return false;
              }
  
              /**
               * Transitional option validator
               * @param {function|boolean?} validator
               * @param {string?} version
               * @param {string} message
               * @returns {function}
               */
              validators.transitional = function transitional(validator, version, message) {
                  var isDeprecated = version && isOlderVersion(version);
  
                  function formatMessage(opt, desc) {
                      return '[Axios v' + pkg.version + '] Transitional option \'' + opt + '\'' + desc + (message ? '. ' + message : '');
                  }
  
                  // eslint-disable-next-line func-names
                  return function (value, opt, opts) {
                      if (validator === false) {
                          throw new Error(formatMessage(opt, ' has been removed in ' + version));
                      }
  
                      if (isDeprecated && !deprecatedWarnings[opt]) {
                          deprecatedWarnings[opt] = true;
                          // eslint-disable-next-line no-console
                          console.warn(
                              formatMessage(
                                  opt,
                                  ' has been deprecated since v' + version + ' and will be removed in the near future'
                              )
                          );
                      }
  
                      return validator ? validator(value, opt, opts) : true;
                  };
              };
  
              /**
               * Assert object's properties type
               * @param {object} options
               * @param {object} schema
               * @param {boolean?} allowUnknown
               */
  
              function assertOptions(options, schema, allowUnknown) {
                  if (typeof options !== 'object') {
                      throw new TypeError('options must be an object');
                  }
                  var keys = Object.keys(options);
                  var i = keys.length;
                  while (i-- > 0) {
                      var opt = keys[i];
                      var validator = schema[opt];
                      if (validator) {
                          var value = options[opt];
                          var result = value === undefined || validator(value, opt, options);
                          if (result !== true) {
                              throw new TypeError('option ' + opt + ' must be ' + result);
                          }
                          continue;
                      }
                      if (allowUnknown !== true) {
                          throw Error('Unknown option ' + opt);
                      }
                  }
              }
  
              module.exports = {
                  isOlderVersion: isOlderVersion,
                  assertOptions: assertOptions,
                  validators: validators
              };
  
  
              /***/
          }),
  
          /***/ "./node_modules/axios/lib/utils.js":
          /*!*****************************************!*\
    !*** ./node_modules/axios/lib/utils.js ***!
    \*****************************************/
          /***/ ((module, __unused_webpack_exports, __webpack_require__) => {
  
              "use strict";
  
  
              var bind = __webpack_require__(/*! ./helpers/bind */ "./node_modules/axios/lib/helpers/bind.js");
  
  // 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 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 a Buffer
               *
               * @param {Object} val The value to test
               * @returns {boolean} True if value is a Buffer, otherwise false
               */
              function isBuffer(val) {
                  return val !== null && !isUndefined(val) && val.constructor !== null && !isUndefined(val.constructor)
                      && typeof val.constructor.isBuffer === 'function' && val.constructor.isBuffer(val);
              }
  
              /**
               * 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 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 plain Object
               *
               * @param {Object} val The value to test
               * @return {boolean} True if value is a plain Object, otherwise false
               */
              function isPlainObject(val) {
                  if (toString.call(val) !== '[object Object]') {
                      return false;
                  }
  
                  var prototype = Object.getPrototypeOf(val);
                  return prototype === null || prototype === Object.prototype;
              }
  
              /**
               * 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.trim ? str.trim() : str.replace(/^\s+|\s+$/g, '');
              }
  
              /**
               * 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 (isPlainObject(result[key]) && isPlainObject(val)) {
                          result[key] = merge(result[key], val);
                      } else if (isPlainObject(val)) {
                          result[key] = merge({}, val);
                      } else if (isArray(val)) {
                          result[key] = val.slice();
                      } 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;
              }
  
              /**
               * Remove byte order marker. This catches EF BB BF (the UTF-8 BOM)
               *
               * @param {string} content with BOM
               * @return {string} content value without BOM
               */
              function stripBOM(content) {
                  if (content.charCodeAt(0) === 0xFEFF) {
                      content = content.slice(1);
                  }
                  return content;
              }
  
              module.exports = {
                  isArray: isArray,
                  isArrayBuffer: isArrayBuffer,
                  isBuffer: isBuffer,
                  isFormData: isFormData,
                  isArrayBufferView: isArrayBufferView,
                  isString: isString,
                  isNumber: isNumber,
                  isObject: isObject,
                  isPlainObject: isPlainObject,
                  isUndefined: isUndefined,
                  isDate: isDate,
                  isFile: isFile,
                  isBlob: isBlob,
                  isFunction: isFunction,
                  isStream: isStream,
                  isURLSearchParams: isURLSearchParams,
                  isStandardBrowserEnv: isStandardBrowserEnv,
                  forEach: forEach,
                  merge: merge,
                  extend: extend,
                  trim: trim,
                  stripBOM: stripBOM
              };
  
  
              /***/
          }),
  
          /***/ "./resources/js/app.js":
          /*!*****************************!*\
    !*** ./resources/js/app.js ***!
    \*****************************/
          /***/ ((__unused_webpack_module, __unused_webpack_exports, __webpack_require__) => {
  
              __webpack_require__(/*! ./bootstrap */ "./resources/js/bootstrap.js");
  
              /***/
          }),
  
          /***/ "./resources/js/bootstrap.js":
          /*!***********************************!*\
    !*** ./resources/js/bootstrap.js ***!
    \***********************************/
          /***/ ((__unused_webpack_module, __unused_webpack_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,
  //     forceTLS: true
  // });
  
              /***/
          }),
  
          /***/ "./node_modules/lodash/lodash.js":
          /*!***************************************!*\
    !*** ./node_modules/lodash/lodash.js ***!
    \***************************************/
          /***/ (function (module, exports, __webpack_require__) {
  
              /* module decorator */
              module = __webpack_require__.nmd(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 = '4.17.21';
  
                  /** 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',
                      INVALID_TEMPL_VAR_ERROR_TEXT = 'Invalid `variable` option passed into `_.template`';
  
                  /** 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 whitespace. */
                  var reTrimStart = /^\s+/;
  
                  /** Used to match a single whitespace character. */
                  var reWhitespace = /\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 validate the `validate` option in `_.template` variable.
                   *
                   * Forbids characters which could potentially change the meaning of the function argument definition:
                   * - "()," (modification of function parameters)
                   * - "=" (default value)
                   * - "[]{}" (destructuring of function parameters)
                   * - "/" (beginning of a comment)
                   * - whitespace
                   */
                  var reForbiddenIdentifierChars = /[()=,{}\[\]\/\s]/;
  
                  /** 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 __webpack_require__.g == 'object' && __webpack_require__.g && __webpack_require__.g.Object === Object && __webpack_require__.g;
  
                  /** 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 && "object" == '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 `_.trim`.
                   *
                   * @private
                   * @param {string} string The string to trim.
                   * @returns {string} Returns the trimmed string.
                   */
                  function baseTrim(string) {
                      return string
                          ? string.slice(0, trimmedEndIndex(string) + 1).replace(reTrimStart, '')
                          : string;
                  }
  
                  /**
                   * 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 `_.trim` and `_.trimEnd` to get the index of the last non-whitespace
                   * character of `string`.
                   *
                   * @private
                   * @param {string} string The string to inspect.
                   * @returns {number} Returns the index of the last non-whitespace character.
                   */
                  function trimmedEndIndex(string) {
                      var index = string.length;
  
                      while (index-- && reWhitespace.test(string.charAt(index))) {
                      }
                      return index;
                  }
  
                  /**
                   * 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) {
                          if (iteratees.length) {
                              iteratees = arrayMap(iteratees, function (iteratee) {
                                  if (isArray(iteratee)) {
                                      return function (value) {
                                          return baseGet(value, iteratee.length === 1 ? iteratee[0] : iteratee);
                                      }
                                  }
                                  return iteratee;
                              });
                          } else {
                              iteratees = [identity];
                          }
  
                          var index = -1;
                          iteratees = arrayMap(iteratees, 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 (key === '__proto__' || key === 'constructor' || key === 'prototype') {
                                  return object;
                              }
  
                              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) {
                          var low = 0,
                              high = array == null ? 0 : array.length;
                          if (high === 0) {
                              return 0;
                          }
  
                          value = iteratee(value);
                          var 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;
                          }
                          // Check that cyclic values are equal.
                          var arrStacked = stack.get(array);
                          var othStacked = stack.get(other);
                          if (arrStacked && othStacked) {
                              return arrStacked == other && othStacked == array;
                          }
                          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;
                              }
                          }
                          // Check that cyclic values are equal.
                          var objStacked = stack.get(object);
                          var othStacked = stack.get(other);
                          if (objStacked && othStacked) {
                              return objStacked == other && othStacked == object;
                          }
                          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']
                       *
                       * // Combining several predicates using `_.overEvery` or `_.overSome`.
                       * _.filter(users, _.overSome([{ 'age': 36 }, ['age', 40]]));
                       * // => objects for ['fred', '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': 30 },
                       *   { 'user': 'barney', 'age': 34 }
                       * ];
                       *
                       * _.sortBy(users, [function(o) { return o.user; }]);
                       * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 30]]
                       *
                       * _.sortBy(users, ['user', 'age']);
                       * // => objects for [['barney', 34], ['barney', 36], ['fred', 30], ['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 = baseTrim(value);
                          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 body 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 body 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
                          // to normalize all kinds of whitespace, so e.g. newlines (and unicode versions of it) can't sneak in
                          // and escape the comment, thus injecting code that gets evaled.
                          var sourceURL = '//# sourceURL=' +
                              (hasOwnProperty.call(options, 'sourceURL')
                                      ? (options.sourceURL + '').replace(/\s/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.
                          var variable = hasOwnProperty.call(options, 'variable') && options.variable;
                          if (!variable) {
                              source = 'with (obj) {\n' + source + '\n}\n';
                          }
                              // Throw an error if a forbidden character was found in `variable`, to prevent
                          // potential command injection attacks.
                          else if (reForbiddenIdentifierChars.test(variable)) {
                              throw new Error(INVALID_TEMPL_VAR_ERROR_TEXT);
                          }
  
                          // 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 body.
                          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 baseTrim(string);
                          }
                          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.slice(0, trimmedEndIndex(string) + 1);
                          }
                          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.
                       *
                       * **Note:** Multiple values can be checked by combining several matchers
                       * using `_.overSome`
                       *
                       * @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 }]
                       *
                       * // Checking for several possible values
                       * _.filter(objects, _.overSome([_.matches({ 'a': 1 }), _.matches({ 'a': 4 })]));
                       * // => [{ 'a': 1, 'b': 2, 'c': 3 }, { '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.
                       *
                       * **Note:** Multiple values can be checked by combining several matchers
                       * using `_.overSome`
                       *
                       * @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 }
                       *
                       * // Checking for several possible values
                       * _.filter(objects, _.overSome([_.matchesProperty('a', 1), _.matchesProperty('a', 4)]));
                       * // => [{ 'a': 1, 'b': 2, 'c': 3 }, { '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.
                       *
                       * Following shorthands are possible for providing predicates.
                       * Pass an `Object` and it will be used as an parameter for `_.matches` to create the predicate.
                       * Pass an `Array` of parameters for `_.matchesProperty` and the predicate will be created using them.
                       *
                       * @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.
                       *
                       * Following shorthands are possible for providing predicates.
                       * Pass an `Object` and it will be used as an parameter for `_.matches` to create the predicate.
                       * Pass an `Array` of parameters for `_.matchesProperty` and the predicate will be created using them.
                       *
                       * @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 matchesFunc = _.overSome([{ 'a': 1 }, { 'a': 2 }])
                       * var matchesPropertyFunc = _.overSome([['a', 1], ['a', 2]])
                       */
                      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));
  
  
              /***/
          }),
  
          /***/ "./resources/sass/app.scss":
          /*!*********************************!*\
    !*** ./resources/sass/app.scss ***!
    \*********************************/
          /***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => {
  
              "use strict";
              __webpack_require__.r(__webpack_exports__);
  // extracted by mini-css-extract-plugin
  
  
              /***/
          }),
  
          /***/ "./node_modules/process/browser.js":
          /*!*****************************************!*\
    !*** ./node_modules/process/browser.js ***!
    \*****************************************/
          /***/ ((module) => {
  
  // 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/axios/package.json":
          /*!*****************************************!*\
    !*** ./node_modules/axios/package.json ***!
    \*****************************************/
          /***/ ((module) => {
  
              "use strict";
              module.exports = JSON.parse('{"name":"axios","version":"0.21.4","description":"Promise based HTTP client for the browser and node.js","main":"index.js","scripts":{"test":"grunt test","start":"node ./sandbox/server.js","build":"NODE_ENV=production grunt build","preversion":"npm test","version":"npm run build && grunt version && git add -A dist && git add CHANGELOG.md bower.json package.json","postversion":"git push && git push --tags","examples":"node ./examples/server.js","coveralls":"cat coverage/lcov.info | ./node_modules/coveralls/bin/coveralls.js","fix":"eslint --fix lib/**/*.js"},"repository":{"type":"git","url":"https://github.com/axios/axios.git"},"keywords":["xhr","http","ajax","promise","node"],"author":"Matt Zabriskie","license":"MIT","bugs":{"url":"https://github.com/axios/axios/issues"},"homepage":"https://axios-http.com","devDependencies":{"coveralls":"^3.0.0","es6-promise":"^4.2.4","grunt":"^1.3.0","grunt-banner":"^0.6.0","grunt-cli":"^1.2.0","grunt-contrib-clean":"^1.1.0","grunt-contrib-watch":"^1.0.0","grunt-eslint":"^23.0.0","grunt-karma":"^4.0.0","grunt-mocha-test":"^0.13.3","grunt-ts":"^6.0.0-beta.19","grunt-webpack":"^4.0.2","istanbul-instrumenter-loader":"^1.0.0","jasmine-core":"^2.4.1","karma":"^6.3.2","karma-chrome-launcher":"^3.1.0","karma-firefox-launcher":"^2.1.0","karma-jasmine":"^1.1.1","karma-jasmine-ajax":"^0.1.13","karma-safari-launcher":"^1.0.0","karma-sauce-launcher":"^4.3.6","karma-sinon":"^1.0.5","karma-sourcemap-loader":"^0.3.8","karma-webpack":"^4.0.2","load-grunt-tasks":"^3.5.2","minimist":"^1.2.0","mocha":"^8.2.1","sinon":"^4.5.0","terser-webpack-plugin":"^4.2.3","typescript":"^4.0.5","url-search-params":"^0.10.0","webpack":"^4.44.2","webpack-dev-server":"^3.11.0"},"browser":{"./lib/adapters/http.js":"./lib/adapters/xhr.js"},"jsdelivr":"dist/axios.min.js","unpkg":"dist/axios.min.js","typings":"./index.d.ts","dependencies":{"follow-redirects":"^1.14.0"},"bundlesize":[{"path":"./dist/axios.min.js","threshold":"5kB"}]}');
  
              /***/
          })
  
          /******/
      });
      /************************************************************************/
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      /******/
      var __webpack_module_cache__ = {};
      /******/
      /******/ 	// The require function
      /******/
      function __webpack_require__(moduleId) {
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          /******/
          var cachedModule = __webpack_module_cache__[moduleId];
          /******/
          if (cachedModule !== undefined) {
              /******/
              return cachedModule.exports;
              /******/
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          /******/ 		// Create a new module (and put it into the cache)
          /******/
          var module = __webpack_module_cache__[moduleId] = {
              /******/            id: moduleId,
              /******/            loaded: false,
              /******/            exports: {}
              /******/
          };
          /******/
          /******/ 		// Execute the module function
          /******/
          __webpack_modules__[moduleId].call(module.exports, module, module.exports, __webpack_require__);
          /******/
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          /******/
          module.loaded = true;
          /******/
          /******/ 		// Return the exports of the module
          /******/
          return module.exports;
          /******/
      }
  
      /******/
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      __webpack_require__.m = __webpack_modules__;
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