@supermap/iclient-maplibregl/dist/iclient-maplibregl-es6.js

@supermap/iclient-maplibregl 是一套基于 Maplibre GL 的云 GIS 网络客户端开发平台， 支持访问 SuperMap iServer / iEdge / iPortal / iManager / Online 的地图、服务和资源，为用户提供了完整专业的 GIS 能力， 同时提供了优秀的可视化功能。

/*!
 * 
 *          iclient-maplibregl
 *          Copyright© 2000 - 2023 SuperMap Software Co.Ltd
 *          license: Apache-2.0
 *          version: v11.1.1
 *
 */
/******/ (() => { // webpackBootstrap
/******/ 	var __webpack_modules__ = ({

/***/ 693:
/***/ (function(module) {

(function(self) {
  'use strict';

  // if __disableNativeFetch is set to true, the it will always polyfill fetch
  // with Ajax.
  if (!self.__disableNativeFetch && self.fetch) {
    return
  }

  function normalizeName(name) {
    if (typeof name !== 'string') {
      name = String(name)
    }
    if (/[^a-z0-9\-#$%&'*+.\^_`|~]/i.test(name)) {
      throw new TypeError('Invalid character in header field name')
    }
    return name.toLowerCase()
  }

  function normalizeValue(value) {
    if (typeof value !== 'string') {
      value = String(value)
    }
    return value
  }

  function Headers(headers) {
    this.map = {}

    if (headers instanceof Headers) {
      headers.forEach(function(value, name) {
        this.append(name, value)
      }, this)

    } else if (headers) {
      Object.getOwnPropertyNames(headers).forEach(function(name) {
        this.append(name, headers[name])
      }, this)
    }
  }

  Headers.prototype.append = function(name, value) {
    name = normalizeName(name)
    value = normalizeValue(value)
    var list = this.map[name]
    if (!list) {
      list = []
      this.map[name] = list
    }
    list.push(value)
  }

  Headers.prototype['delete'] = function(name) {
    delete this.map[normalizeName(name)]
  }

  Headers.prototype.get = function(name) {
    var values = this.map[normalizeName(name)]
    return values ? values[0] : null
  }

  Headers.prototype.getAll = function(name) {
    return this.map[normalizeName(name)] || []
  }

  Headers.prototype.has = function(name) {
    return this.map.hasOwnProperty(normalizeName(name))
  }

  Headers.prototype.set = function(name, value) {
    this.map[normalizeName(name)] = [normalizeValue(value)]
  }

  Headers.prototype.forEach = function(callback, thisArg) {
    Object.getOwnPropertyNames(this.map).forEach(function(name) {
      this.map[name].forEach(function(value) {
        callback.call(thisArg, value, name, this)
      }, this)
    }, this)
  }

  function consumed(body) {
    if (body.bodyUsed) {
      return Promise.reject(new TypeError('Already read'))
    }
    body.bodyUsed = true
  }

  function fileReaderReady(reader) {
    return new Promise(function(resolve, reject) {
      reader.onload = function() {
        resolve(reader.result)
      }
      reader.onerror = function() {
        reject(reader.error)
      }
    })
  }

  function readBlobAsArrayBuffer(blob) {
    var reader = new FileReader()
    reader.readAsArrayBuffer(blob)
    return fileReaderReady(reader)
  }

  function readBlobAsText(blob, options) {
    var reader = new FileReader()
    var contentType = options.headers.map['content-type'] ? options.headers.map['content-type'].toString() : ''
    var regex = /charset\=[0-9a-zA-Z\-\_]*;?/
    var _charset = blob.type.match(regex) || contentType.match(regex)
    var args = [blob]

    if(_charset) {
      args.push(_charset[0].replace(/^charset\=/, '').replace(/;$/, ''))
    }

    reader.readAsText.apply(reader, args)
    return fileReaderReady(reader)
  }

  var support = {
    blob: 'FileReader' in self && 'Blob' in self && (function() {
      try {
        new Blob();
        return true
      } catch(e) {
        return false
      }
    })(),
    formData: 'FormData' in self,
    arrayBuffer: 'ArrayBuffer' in self
  }

  function Body() {
    this.bodyUsed = false


    this._initBody = function(body, options) {
      this._bodyInit = body
      if (typeof body === 'string') {
        this._bodyText = body
      } else if (support.blob && Blob.prototype.isPrototypeOf(body)) {
        this._bodyBlob = body
        this._options = options
      } else if (support.formData && FormData.prototype.isPrototypeOf(body)) {
        this._bodyFormData = body
      } else if (!body) {
        this._bodyText = ''
      } else if (support.arrayBuffer && ArrayBuffer.prototype.isPrototypeOf(body)) {
        // Only support ArrayBuffers for POST method.
        // Receiving ArrayBuffers happens via Blobs, instead.
      } else {
        throw new Error('unsupported BodyInit type')
      }
    }

    if (support.blob) {
      this.blob = function() {
        var rejected = consumed(this)
        if (rejected) {
          return rejected
        }

        if (this._bodyBlob) {
          return Promise.resolve(this._bodyBlob)
        } else if (this._bodyFormData) {
          throw new Error('could not read FormData body as blob')
        } else {
          return Promise.resolve(new Blob([this._bodyText]))
        }
      }

      this.arrayBuffer = function() {
        return this.blob().then(readBlobAsArrayBuffer)
      }

      this.text = function() {
        var rejected = consumed(this)
        if (rejected) {
          return rejected
        }

        if (this._bodyBlob) {
          return readBlobAsText(this._bodyBlob, this._options)
        } else if (this._bodyFormData) {
          throw new Error('could not read FormData body as text')
        } else {
          return Promise.resolve(this._bodyText)
        }
      }
    } else {
      this.text = function() {
        var rejected = consumed(this)
        return rejected ? rejected : Promise.resolve(this._bodyText)
      }
    }

    if (support.formData) {
      this.formData = function() {
        return this.text().then(decode)
      }
    }

    this.json = function() {
      return this.text().then(JSON.parse)
    }

    return this
  }

  // HTTP methods whose capitalization should be normalized
  var methods = ['DELETE', 'GET', 'HEAD', 'OPTIONS', 'POST', 'PUT']

  function normalizeMethod(method) {
    var upcased = method.toUpperCase()
    return (methods.indexOf(upcased) > -1) ? upcased : method
  }

  function Request(input, options) {
    options = options || {}
    var body = options.body
    if (Request.prototype.isPrototypeOf(input)) {
      if (input.bodyUsed) {
        throw new TypeError('Already read')
      }
      this.url = input.url
      this.credentials = input.credentials
      if (!options.headers) {
        this.headers = new Headers(input.headers)
      }
      this.method = input.method
      this.mode = input.mode
      if (!body) {
        body = input._bodyInit
        input.bodyUsed = true
      }
    } else {
      this.url = input
    }

    this.credentials = options.credentials || this.credentials || 'omit'
    if (options.headers || !this.headers) {
      this.headers = new Headers(options.headers)
    }
    this.method = normalizeMethod(options.method || this.method || 'GET')
    this.mode = options.mode || this.mode || null
    this.referrer = null

    if ((this.method === 'GET' || this.method === 'HEAD') && body) {
      throw new TypeError('Body not allowed for GET or HEAD requests')
    }
    this._initBody(body, options)
  }

  Request.prototype.clone = function() {
    return new Request(this)
  }

  function decode(body) {
    var form = new FormData()
    body.trim().split('&').forEach(function(bytes) {
      if (bytes) {
        var split = bytes.split('=')
        var name = split.shift().replace(/\+/g, ' ')
        var value = split.join('=').replace(/\+/g, ' ')
        form.append(decodeURIComponent(name), decodeURIComponent(value))
      }
    })
    return form
  }

  function headers(xhr) {
    var head = new Headers()
    var pairs = xhr.getAllResponseHeaders().trim().split('\n')
    pairs.forEach(function(header) {
      var split = header.trim().split(':')
      var key = split.shift().trim()
      var value = split.join(':').trim()
      head.append(key, value)
    })
    return head
  }

  Body.call(Request.prototype)

  function Response(bodyInit, options) {
    if (!options) {
      options = {}
    }

    this._initBody(bodyInit, options)
    this.type = 'default'
    this.status = options.status
    this.ok = this.status >= 200 && this.status < 300
    this.statusText = options.statusText
    this.headers = options.headers instanceof Headers ? options.headers : new Headers(options.headers)
    this.url = options.url || ''
  }

  Body.call(Response.prototype)

  Response.prototype.clone = function() {
    return new Response(this._bodyInit, {
      status: this.status,
      statusText: this.statusText,
      headers: new Headers(this.headers),
      url: this.url
    })
  }

  Response.error = function() {
    var response = new Response(null, {status: 0, statusText: ''})
    response.type = 'error'
    return response
  }

  var redirectStatuses = [301, 302, 303, 307, 308]

  Response.redirect = function(url, status) {
    if (redirectStatuses.indexOf(status) === -1) {
      throw new RangeError('Invalid status code')
    }

    return new Response(null, {status: status, headers: {location: url}})
  }

  self.Headers = Headers;
  self.Request = Request;
  self.Response = Response;

  self.fetch = function(input, init) {
    return new Promise(function(resolve, reject) {
      var request
      if (Request.prototype.isPrototypeOf(input) && !init) {
        request = input
      } else {
        request = new Request(input, init)
      }

      var xhr = new XMLHttpRequest()

      function responseURL() {
        if ('responseURL' in xhr) {
          return xhr.responseURL
        }

        // Avoid security warnings on getResponseHeader when not allowed by CORS
        if (/^X-Request-URL:/m.test(xhr.getAllResponseHeaders())) {
          return xhr.getResponseHeader('X-Request-URL')
        }

        return;
      }

      var __onLoadHandled = false;

      function onload() {
        if (xhr.readyState !== 4) {
          return
        }
        var status = (xhr.status === 1223) ? 204 : xhr.status
        if (status < 100 || status > 599) {
          if (__onLoadHandled) { return; } else { __onLoadHandled = true; }
          reject(new TypeError('Network request failed'))
          return
        }
        var options = {
          status: status,
          statusText: xhr.statusText,
          headers: headers(xhr),
          url: responseURL()
        }
        var body = 'response' in xhr ? xhr.response : xhr.responseText;

        if (__onLoadHandled) { return; } else { __onLoadHandled = true; }
        resolve(new Response(body, options))
      }
      xhr.onreadystatechange = onload;
      xhr.onload = onload;
      xhr.onerror = function() {
        if (__onLoadHandled) { return; } else { __onLoadHandled = true; }
        reject(new TypeError('Network request failed'))
      }

      xhr.open(request.method, request.url, true)

      // `withCredentials` should be setted after calling `.open` in IE10
      // http://stackoverflow.com/a/19667959/1219343
      try {
        if (request.credentials === 'include') {
          if ('withCredentials' in xhr) {
            xhr.withCredentials = true;
          } else {
            console && console.warn && console.warn('withCredentials is not supported, you can ignore this warning');
          }
        }
      } catch (e) {
        console && console.warn && console.warn('set withCredentials error:' + e);
      }

      if ('responseType' in xhr && support.blob) {
        xhr.responseType = 'blob'
      }

      request.headers.forEach(function(value, name) {
        xhr.setRequestHeader(name, value)
      })

      xhr.send(typeof request._bodyInit === 'undefined' ? null : request._bodyInit)
    })
  }
  self.fetch.polyfill = true

  // Support CommonJS
  if ( true && module.exports) {
    module.exports = self.fetch;
  }
})(typeof self !== 'undefined' ? self : this);


/***/ }),

/***/ 144:
/***/ (function(module, exports) {

var __WEBPACK_AMD_DEFINE_FACTORY__, __WEBPACK_AMD_DEFINE_ARRAY__, __WEBPACK_AMD_DEFINE_RESULT__;(function (global, factory) {
  if (true) {
    !(__WEBPACK_AMD_DEFINE_ARRAY__ = [exports, module], __WEBPACK_AMD_DEFINE_FACTORY__ = (factory),
		__WEBPACK_AMD_DEFINE_RESULT__ = (typeof __WEBPACK_AMD_DEFINE_FACTORY__ === 'function' ?
		(__WEBPACK_AMD_DEFINE_FACTORY__.apply(exports, __WEBPACK_AMD_DEFINE_ARRAY__)) : __WEBPACK_AMD_DEFINE_FACTORY__),
		__WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));
  } else { var mod; }
})(this, function (exports, module) {
  'use strict';

  var defaultOptions = {
    timeout: 5000,
    jsonpCallback: 'callback',
    jsonpCallbackFunction: null
  };

  function generateCallbackFunction() {
    return 'jsonp_' + Date.now() + '_' + Math.ceil(Math.random() * 100000);
  }

  function clearFunction(functionName) {
    // IE8 throws an exception when you try to delete a property on window
    // http://stackoverflow.com/a/1824228/751089
    try {
      delete window[functionName];
    } catch (e) {
      window[functionName] = undefined;
    }
  }

  function removeScript(scriptId) {
    var script = document.getElementById(scriptId);
    if (script) {
      document.getElementsByTagName('head')[0].removeChild(script);
    }
  }

  function fetchJsonp(_url) {
    var options = arguments.length <= 1 || arguments[1] === undefined ? {} : arguments[1];

    // to avoid param reassign
    var url = _url;
    var timeout = options.timeout || defaultOptions.timeout;
    var jsonpCallback = options.jsonpCallback || defaultOptions.jsonpCallback;

    var timeoutId = undefined;

    return new Promise(function (resolve, reject) {
      var callbackFunction = options.jsonpCallbackFunction || generateCallbackFunction();
      var scriptId = jsonpCallback + '_' + callbackFunction;

      window[callbackFunction] = function (response) {
        resolve({
          ok: true,
          // keep consistent with fetch API
          json: function json() {
            return Promise.resolve(response);
          }
        });

        if (timeoutId) clearTimeout(timeoutId);

        removeScript(scriptId);

        clearFunction(callbackFunction);
      };

      // Check if the user set their own params, and if not add a ? to start a list of params
      url += url.indexOf('?') === -1 ? '?' : '&';

      var jsonpScript = document.createElement('script');
      jsonpScript.setAttribute('src', '' + url + jsonpCallback + '=' + callbackFunction);
      if (options.charset) {
        jsonpScript.setAttribute('charset', options.charset);
      }
      jsonpScript.id = scriptId;
      document.getElementsByTagName('head')[0].appendChild(jsonpScript);

      timeoutId = setTimeout(function () {
        reject(new Error('JSONP request to ' + _url + ' timed out'));

        clearFunction(callbackFunction);
        removeScript(scriptId);
        window[callbackFunction] = function () {
          clearFunction(callbackFunction);
        };
      }, timeout);

      // Caught if got 404/500
      jsonpScript.onerror = function () {
        reject(new Error('JSONP request to ' + _url + ' failed'));

        clearFunction(callbackFunction);
        removeScript(scriptId);
        if (timeoutId) clearTimeout(timeoutId);
      };
    });
  }

  // export as global function
  /*
  let local;
  if (typeof global !== 'undefined') {
    local = global;
  } else if (typeof self !== 'undefined') {
    local = self;
  } else {
    try {
      local = Function('return this')();
    } catch (e) {
      throw new Error('polyfill failed because global object is unavailable in this environment');
    }
  }
  local.fetchJsonp = fetchJsonp;
  */

  module.exports = fetchJsonp;
});

/***/ }),

/***/ 186:
/***/ ((module) => {

var containers = []; // will store container HTMLElement references
var styleElements = []; // will store {prepend: HTMLElement, append: HTMLElement}

var usage = 'insert-css: You need to provide a CSS string. Usage: insertCss(cssString[, options]).';

function insertCss(css, options) {
    options = options || {};

    if (css === undefined) {
        throw new Error(usage);
    }

    var position = options.prepend === true ? 'prepend' : 'append';
    var container = options.container !== undefined ? options.container : document.querySelector('head');
    var containerId = containers.indexOf(container);

    // first time we see this container, create the necessary entries
    if (containerId === -1) {
        containerId = containers.push(container) - 1;
        styleElements[containerId] = {};
    }

    // try to get the correponding container + position styleElement, create it otherwise
    var styleElement;

    if (styleElements[containerId] !== undefined && styleElements[containerId][position] !== undefined) {
        styleElement = styleElements[containerId][position];
    } else {
        styleElement = styleElements[containerId][position] = createStyleElement();

        if (position === 'prepend') {
            container.insertBefore(styleElement, container.childNodes[0]);
        } else {
            container.appendChild(styleElement);
        }
    }

    // strip potential UTF-8 BOM if css was read from a file
    if (css.charCodeAt(0) === 0xFEFF) { css = css.substr(1, css.length); }

    // actually add the stylesheet
    if (styleElement.styleSheet) {
        styleElement.styleSheet.cssText += css
    } else {
        styleElement.textContent += css;
    }

    return styleElement;
};

function createStyleElement() {
    var styleElement = document.createElement('style');
    styleElement.setAttribute('type', 'text/css');
    return styleElement;
}

module.exports = insertCss;
module.exports.insertCss = insertCss;


/***/ }),

/***/ 465:
/***/ ((module, exports, __webpack_require__) => {

/* module decorator */ module = __webpack_require__.nmd(module);
/**
 * lodash (Custom Build) <https://lodash.com/>
 * Build: `lodash modularize exports="npm" -o ./`
 * Copyright jQuery Foundation and other contributors <https://jquery.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
 */

/** Used as the size to enable large array optimizations. */
var LARGE_ARRAY_SIZE = 200;

/** Used to stand-in for `undefined` hash values. */
var HASH_UNDEFINED = '__lodash_hash_undefined__';

/** Used as references for various `Number` constants. */
var MAX_SAFE_INTEGER = 9007199254740991;

/** `Object#toString` result references. */
var argsTag = '[object Arguments]',
    arrayTag = '[object Array]',
    boolTag = '[object Boolean]',
    dateTag = '[object Date]',
    errorTag = '[object Error]',
    funcTag = '[object Function]',
    genTag = '[object GeneratorFunction]',
    mapTag = '[object Map]',
    numberTag = '[object Number]',
    objectTag = '[object Object]',
    promiseTag = '[object Promise]',
    regexpTag = '[object RegExp]',
    setTag = '[object Set]',
    stringTag = '[object String]',
    symbolTag = '[object Symbol]',
    weakMapTag = '[object WeakMap]';

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 `RegExp`
 * [syntax characters](http://ecma-international.org/ecma-262/7.0/#sec-patterns).
 */
var reRegExpChar = /[\\^$.*+?()[\]{}|]/g;

/** Used to match `RegExp` flags from their coerced string values. */
var reFlags = /\w*$/;

/** Used to detect host constructors (Safari). */
var reIsHostCtor = /^\[object .+?Constructor\]$/;

/** Used to detect unsigned integer values. */
var reIsUint = /^(?:0|[1-9]\d*)$/;

/** 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;

/** 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;

/**
 * Adds the key-value `pair` to `map`.
 *
 * @private
 * @param {Object} map The map to modify.
 * @param {Array} pair The key-value pair to add.
 * @returns {Object} Returns `map`.
 */
function addMapEntry(map, pair) {
  // Don't return `map.set` because it's not chainable in IE 11.
  map.set(pair[0], pair[1]);
  return map;
}

/**
 * Adds `value` to `set`.
 *
 * @private
 * @param {Object} set The set to modify.
 * @param {*} value The value to add.
 * @returns {Object} Returns `set`.
 */
function addSetEntry(set, value) {
  // Don't return `set.add` because it's not chainable in IE 11.
  set.add(value);
  return set;
}

/**
 * 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 ? array.length : 0;

  while (++index < length) {
    if (iteratee(array[index], index, array) === false) {
      break;
    }
  }
  return array;
}

/**
 * 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 ? array.length : 0;

  if (initAccum && length) {
    accumulator = array[++index];
  }
  while (++index < length) {
    accumulator = iteratee(accumulator, array[index], index, array);
  }
  return accumulator;
}

/**
 * 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;
}

/**
 * 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 `value` is a host object in IE < 9.
 *
 * @private
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a host object, else `false`.
 */
function isHostObject(value) {
  // Many host objects are `Object` objects that can coerce to strings
  // despite having improperly defined `toString` methods.
  var result = false;
  if (value != null && typeof value.toString != 'function') {
    try {
      result = !!(value + '');
    } catch (e) {}
  }
  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));
  };
}

/**
 * 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;
}

/** 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 = root['__core-js_shared__'];

/** 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 decompiled source of functions. */
var funcToString = funcProto.toString;

/** Used to check objects for own properties. */
var hasOwnProperty = objectProto.hasOwnProperty;

/**
 * Used to resolve the
 * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
 * of values.
 */
var objectToString = objectProto.toString;

/** 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 ? root.Buffer : undefined,
    Symbol = root.Symbol,
    Uint8Array = root.Uint8Array,
    getPrototype = overArg(Object.getPrototypeOf, Object),
    objectCreate = Object.create,
    propertyIsEnumerable = objectProto.propertyIsEnumerable,
    splice = arrayProto.splice;

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeGetSymbols = Object.getOwnPropertySymbols,
    nativeIsBuffer = Buffer ? Buffer.isBuffer : undefined,
    nativeKeys = overArg(Object.keys, Object);

/* Built-in method references that are verified to be native. */
var DataView = getNative(root, 'DataView'),
    Map = getNative(root, 'Map'),
    Promise = getNative(root, 'Promise'),
    Set = getNative(root, 'Set'),
    WeakMap = getNative(root, 'WeakMap'),
    nativeCreate = getNative(Object, 'create');

/** 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;

/**
 * Creates a hash object.
 *
 * @private
 * @constructor
 * @param {Array} [entries] The key-value pairs to cache.
 */
function Hash(entries) {
  var index = -1,
      length = entries ? entries.length : 0;

  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) : {};
}

/**
 * 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) {
  return this.has(key) && delete this.__data__[key];
}

/**
 * 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__;
  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 ? entries.length : 0;

  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__ = [];
}

/**
 * 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);
  }
  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) {
    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 ? entries.length : 0;

  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.__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) {
  return getMapData(this, key)['delete'](key);
}

/**
 * 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) {
  getMapData(this, key).set(key, value);
  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 a stack cache object to store key-value pairs.
 *
 * @private
 * @constructor
 * @param {Array} [entries] The key-value pairs to cache.
 */
function Stack(entries) {
  this.__data__ = new ListCache(entries);
}

/**
 * Removes all key-value entries from the stack.
 *
 * @private
 * @name clear
 * @memberOf Stack
 */
function stackClear() {
  this.__data__ = new ListCache;
}

/**
 * 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) {
  return this.__data__['delete'](key);
}

/**
 * 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 cache = this.__data__;
  if (cache instanceof ListCache) {
    var pairs = cache.__data__;
    if (!Map || (pairs.length < LARGE_ARRAY_SIZE - 1)) {
      pairs.push([key, value]);
      return this;
    }
    cache = this.__data__ = new MapCache(pairs);
  }
  cache.set(key, value);
  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) {
  // Safari 8.1 makes `arguments.callee` enumerable in strict mode.
  // Safari 9 makes `arguments.length` enumerable in strict mode.
  var result = (isArray(value) || isArguments(value))
    ? baseTimes(value.length, String)
    : [];

  var length = result.length,
      skipIndexes = !!length;

  for (var key in value) {
    if ((inherited || hasOwnProperty.call(value, key)) &&
        !(skipIndexes && (key == 'length' || isIndex(key, length)))) {
      result.push(key);
    }
  }
  return result;
}

/**
 * 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))) {
    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;
}

/**
 * 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 `_.clone` and `_.cloneDeep` which tracks
 * traversed objects.
 *
 * @private
 * @param {*} value The value to clone.
 * @param {boolean} [isDeep] Specify a deep clone.
 * @param {boolean} [isFull] Specify a clone including 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, isDeep, isFull, customizer, key, object, stack) {
  var result;
  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)) {
      if (isHostObject(value)) {
        return object ? value : {};
      }
      result = initCloneObject(isFunc ? {} : value);
      if (!isDeep) {
        return copySymbols(value, baseAssign(result, value));
      }
    } else {
      if (!cloneableTags[tag]) {
        return object ? value : {};
      }
      result = initCloneByTag(value, tag, baseClone, 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 (!isArr) {
    var props = isFull ? getAllKeys(value) : keys(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, isDeep, isFull, customizer, key, value, stack));
  });
  return result;
}

/**
 * The base implementation of `_.create` without support for assigning
 * properties to the created object.
 *
 * @private
 * @param {Object} prototype The object to inherit from.
 * @returns {Object} Returns the new object.
 */
function baseCreate(proto) {
  return isObject(proto) ? objectCreate(proto) : {};
}

/**
 * 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`.
 *
 * @private
 * @param {*} value The value to query.
 * @returns {string} Returns the `toStringTag`.
 */
function baseGetTag(value) {
  return objectToString.call(value);
}

/**
 * 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) || isHostObject(value)) ? reIsNative : reIsHostCtor;
  return pattern.test(toSource(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;
}

/**
 * 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 result = new buffer.constructor(buffer.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 `map`.
 *
 * @private
 * @param {Object} map The map to clone.
 * @param {Function} cloneFunc The function to clone values.
 * @param {boolean} [isDeep] Specify a deep clone.
 * @returns {Object} Returns the cloned map.
 */
function cloneMap(map, isDeep, cloneFunc) {
  var array = isDeep ? cloneFunc(mapToArray(map), true) : mapToArray(map);
  return arrayReduce(array, addMapEntry, new map.constructor);
}

/**
 * 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 `set`.
 *
 * @private
 * @param {Object} set The set to clone.
 * @param {Function} cloneFunc The function to clone values.
 * @param {boolean} [isDeep] Specify a deep clone.
 * @returns {Object} Returns the cloned set.
 */
function cloneSet(set, isDeep, cloneFunc) {
  var array = isDeep ? cloneFunc(setToArray(set), true) : setToArray(set);
  return arrayReduce(array, addSetEntry, new set.constructor);
}

/**
 * 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);
}

/**
 * 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) {
  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;

    assignValue(object, key, newValue === undefined ? source[key] : newValue);
  }
  return object;
}

/**
 * Copies own symbol properties 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);
}

/**
 * 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);
}

/**
 * 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 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;
}

/**
 * Creates an array of the own enumerable symbol properties of `object`.
 *
 * @private
 * @param {Object} object The object to query.
 * @returns {Array} Returns the array of symbols.
 */
var getSymbols = nativeGetSymbols ? overArg(nativeGetSymbols, Object) : stubArray;

/**
 * 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,
// for data views in Edge < 14, and promises in Node.js.
if ((DataView && getTag(new DataView(new ArrayBuffer(1))) !=