axios.js

// Axios v1.1.2 Copyright (c) 2022 Matt Zabriskie and contributors
(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
  typeof define === 'function' && define.amd ? define(factory) :
  (global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.axios = factory());
})(this, (function () { 'use strict';

  function _typeof(obj) {
    "@babel/helpers - typeof";

    return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (obj) {
      return typeof obj;
    } : function (obj) {
      return obj && "function" == typeof Symbol && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
    }, _typeof(obj);
  }

  function _classCallCheck(instance, Constructor) {
    if (!(instance instanceof Constructor)) {
      throw new TypeError("Cannot call a class as a function");
    }
  }

  function _defineProperties(target, props) {
    for (var i = 0; i < props.length; i++) {
      var descriptor = props[i];
      descriptor.enumerable = descriptor.enumerable || false;
      descriptor.configurable = true;
      if ("value" in descriptor) descriptor.writable = true;
      Object.defineProperty(target, descriptor.key, descriptor);
    }
  }

  function _createClass(Constructor, protoProps, staticProps) {
    if (protoProps) _defineProperties(Constructor.prototype, protoProps);
    if (staticProps) _defineProperties(Constructor, staticProps);
    Object.defineProperty(Constructor, "prototype", {
      writable: false
    });
    return Constructor;
  }

  function bind(fn, thisArg) {
    return function wrap() {
      return fn.apply(thisArg, arguments);
    };
  }

  var toString = Object.prototype.toString;
  var getPrototypeOf = Object.getPrototypeOf;

  var kindOf = function (cache) {
    return function (thing) {
      var str = toString.call(thing);
      return cache[str] || (cache[str] = str.slice(8, -1).toLowerCase());
    };
  }(Object.create(null));

  var kindOfTest = function kindOfTest(type) {
    type = type.toLowerCase();
    return function (thing) {
      return kindOf(thing) === type;
    };
  };

  var typeOfTest = function typeOfTest(type) {
    return function (thing) {
      return _typeof(thing) === type;
    };
  };
  /**
   * Determine if a value is an Array
   *
   * @param {Object} val The value to test
   *
   * @returns {boolean} True if value is an Array, otherwise false
   */


  var isArray = Array.isArray;
  /**
   * Determine if a value is undefined
   *
   * @param {*} val The value to test
   *
   * @returns {boolean} True if the value is undefined, otherwise false
   */

  var isUndefined = typeOfTest('undefined');
  /**
   * Determine if a value is a Buffer
   *
   * @param {*} 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) && isFunction(val.constructor.isBuffer) && val.constructor.isBuffer(val);
  }
  /**
   * Determine if a value is an ArrayBuffer
   *
   * @param {*} val The value to test
   *
   * @returns {boolean} True if value is an ArrayBuffer, otherwise false
   */


  var isArrayBuffer = kindOfTest('ArrayBuffer');
  /**
   * Determine if a value is a view on an ArrayBuffer
   *
   * @param {*} 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 && isArrayBuffer(val.buffer);
    }

    return result;
  }
  /**
   * Determine if a value is a String
   *
   * @param {*} val The value to test
   *
   * @returns {boolean} True if value is a String, otherwise false
   */


  var isString = typeOfTest('string');
  /**
   * Determine if a value is a Function
   *
   * @param {*} val The value to test
   * @returns {boolean} True if value is a Function, otherwise false
   */

  var isFunction = typeOfTest('function');
  /**
   * Determine if a value is a Number
   *
   * @param {*} val The value to test
   *
   * @returns {boolean} True if value is a Number, otherwise false
   */

  var isNumber = typeOfTest('number');
  /**
   * Determine if a value is an Object
   *
   * @param {*} thing The value to test
   *
   * @returns {boolean} True if value is an Object, otherwise false
   */

  var isObject = function isObject(thing) {
    return thing !== null && _typeof(thing) === 'object';
  };
  /**
   * Determine if a value is a Boolean
   *
   * @param {*} thing The value to test
   * @returns {boolean} True if value is a Boolean, otherwise false
   */


  var isBoolean = function isBoolean(thing) {
    return thing === true || thing === false;
  };
  /**
   * Determine if a value is a plain Object
   *
   * @param {*} val The value to test
   *
   * @returns {boolean} True if value is a plain Object, otherwise false
   */


  var isPlainObject = function isPlainObject(val) {
    if (kindOf(val) !== 'object') {
      return false;
    }

    var prototype = getPrototypeOf(val);
    return (prototype === null || prototype === Object.prototype || Object.getPrototypeOf(prototype) === null) && !(Symbol.toStringTag in val) && !(Symbol.iterator in val);
  };
  /**
   * Determine if a value is a Date
   *
   * @param {*} val The value to test
   *
   * @returns {boolean} True if value is a Date, otherwise false
   */


  var isDate = kindOfTest('Date');
  /**
   * Determine if a value is a File
   *
   * @param {*} val The value to test
   *
   * @returns {boolean} True if value is a File, otherwise false
   */

  var isFile = kindOfTest('File');
  /**
   * Determine if a value is a Blob
   *
   * @param {*} val The value to test
   *
   * @returns {boolean} True if value is a Blob, otherwise false
   */

  var isBlob = kindOfTest('Blob');
  /**
   * Determine if a value is a FileList
   *
   * @param {*} val The value to test
   *
   * @returns {boolean} True if value is a File, otherwise false
   */

  var isFileList = kindOfTest('FileList');
  /**
   * Determine if a value is a Stream
   *
   * @param {*} val The value to test
   *
   * @returns {boolean} True if value is a Stream, otherwise false
   */

  var isStream = function isStream(val) {
    return isObject(val) && isFunction(val.pipe);
  };
  /**
   * Determine if a value is a FormData
   *
   * @param {*} thing The value to test
   *
   * @returns {boolean} True if value is an FormData, otherwise false
   */


  var isFormData = function isFormData(thing) {
    var pattern = '[object FormData]';
    return thing && (typeof FormData === 'function' && thing instanceof FormData || toString.call(thing) === pattern || isFunction(thing.toString) && thing.toString() === pattern);
  };
  /**
   * Determine if a value is a URLSearchParams object
   *
   * @param {*} val The value to test
   *
   * @returns {boolean} True if value is a URLSearchParams object, otherwise false
   */


  var isURLSearchParams = kindOfTest('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
   */

  var trim = function trim(str) {
    return str.trim ? str.trim() : str.replace(/^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g, '');
  };
  /**
   * 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
   *
   * @param {Boolean} [allOwnKeys = false]
   * @returns {void}
   */


  function forEach(obj, fn) {
    var _ref = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {},
        _ref$allOwnKeys = _ref.allOwnKeys,
        allOwnKeys = _ref$allOwnKeys === void 0 ? false : _ref$allOwnKeys;

    // Don't bother if no value provided
    if (obj === null || typeof obj === 'undefined') {
      return;
    }

    var i;
    var l; // 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 (i = 0, l = obj.length; i < l; i++) {
        fn.call(null, obj[i], i, obj);
      }
    } else {
      // Iterate over object keys
      var keys = allOwnKeys ? Object.getOwnPropertyNames(obj) : Object.keys(obj);
      var len = keys.length;
      var key;

      for (i = 0; i < len; i++) {
        key = keys[i];
        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
    /* obj1, obj2, obj3, ... */
  merge() {
    var result = {};

    var assignValue = 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++) {
      arguments[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
   *
   * @param {Boolean} [allOwnKeys]
   * @returns {Object} The resulting value of object a
   */


  var extend = function extend(a, b, thisArg) {
    var _ref2 = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : {},
        allOwnKeys = _ref2.allOwnKeys;

    forEach(b, function (val, key) {
      if (thisArg && isFunction(val)) {
        a[key] = bind(val, thisArg);
      } else {
        a[key] = val;
      }
    }, {
      allOwnKeys: allOwnKeys
    });
    return a;
  };
  /**
   * Remove byte order marker. This catches EF BB BF (the UTF-8 BOM)
   *
   * @param {string} content with BOM
   *
   * @returns {string} content value without BOM
   */


  var stripBOM = function stripBOM(content) {
    if (content.charCodeAt(0) === 0xFEFF) {
      content = content.slice(1);
    }

    return content;
  };
  /**
   * Inherit the prototype methods from one constructor into another
   * @param {function} constructor
   * @param {function} superConstructor
   * @param {object} [props]
   * @param {object} [descriptors]
   *
   * @returns {void}
   */


  var inherits = function inherits(constructor, superConstructor, props, descriptors) {
    constructor.prototype = Object.create(superConstructor.prototype, descriptors);
    constructor.prototype.constructor = constructor;
    Object.defineProperty(constructor, 'super', {
      value: superConstructor.prototype
    });
    props && Object.assign(constructor.prototype, props);
  };
  /**
   * Resolve object with deep prototype chain to a flat object
   * @param {Object} sourceObj source object
   * @param {Object} [destObj]
   * @param {Function|Boolean} [filter]
   * @param {Function} [propFilter]
   *
   * @returns {Object}
   */


  var toFlatObject = function toFlatObject(sourceObj, destObj, filter, propFilter) {
    var props;
    var i;
    var prop;
    var merged = {};
    destObj = destObj || {}; // eslint-disable-next-line no-eq-null,eqeqeq

    if (sourceObj == null) return destObj;

    do {
      props = Object.getOwnPropertyNames(sourceObj);
      i = props.length;

      while (i-- > 0) {
        prop = props[i];

        if ((!propFilter || propFilter(prop, sourceObj, destObj)) && !merged[prop]) {
          destObj[prop] = sourceObj[prop];
          merged[prop] = true;
        }
      }

      sourceObj = filter !== false && getPrototypeOf(sourceObj);
    } while (sourceObj && (!filter || filter(sourceObj, destObj)) && sourceObj !== Object.prototype);

    return destObj;
  };
  /**
   * Determines whether a string ends with the characters of a specified string
   *
   * @param {String} str
   * @param {String} searchString
   * @param {Number} [position= 0]
   *
   * @returns {boolean}
   */


  var endsWith = function endsWith(str, searchString, position) {
    str = String(str);

    if (position === undefined || position > str.length) {
      position = str.length;
    }

    position -= searchString.length;
    var lastIndex = str.indexOf(searchString, position);
    return lastIndex !== -1 && lastIndex === position;
  };
  /**
   * Returns new array from array like object or null if failed
   *
   * @param {*} [thing]
   *
   * @returns {?Array}
   */


  var toArray = function toArray(thing) {
    if (!thing) return null;
    if (isArray(thing)) return thing;
    var i = thing.length;
    if (!isNumber(i)) return null;
    var arr = new Array(i);

    while (i-- > 0) {
      arr[i] = thing[i];
    }

    return arr;
  };
  /**
   * Checking if the Uint8Array exists and if it does, it returns a function that checks if the
   * thing passed in is an instance of Uint8Array
   *
   * @param {TypedArray}
   *
   * @returns {Array}
   */
  // eslint-disable-next-line func-names


  var isTypedArray = function (TypedArray) {
    // eslint-disable-next-line func-names
    return function (thing) {
      return TypedArray && thing instanceof TypedArray;
    };
  }(typeof Uint8Array !== 'undefined' && getPrototypeOf(Uint8Array));
  /**
   * For each entry in the object, call the function with the key and value.
   *
   * @param {Object<any, any>} obj - The object to iterate over.
   * @param {Function} fn - The function to call for each entry.
   *
   * @returns {void}
   */


  var forEachEntry = function forEachEntry(obj, fn) {
    var generator = obj && obj[Symbol.iterator];
    var iterator = generator.call(obj);
    var result;

    while ((result = iterator.next()) && !result.done) {
      var pair = result.value;
      fn.call(obj, pair[0], pair[1]);
    }
  };
  /**
   * It takes a regular expression and a string, and returns an array of all the matches
   *
   * @param {string} regExp - The regular expression to match against.
   * @param {string} str - The string to search.
   *
   * @returns {Array<boolean>}
   */


  var matchAll = function matchAll(regExp, str) {
    var matches;
    var arr = [];

    while ((matches = regExp.exec(str)) !== null) {
      arr.push(matches);
    }

    return arr;
  };
  /* Checking if the kindOfTest function returns true when passed an HTMLFormElement. */


  var isHTMLForm = kindOfTest('HTMLFormElement');

  var toCamelCase = function toCamelCase(str) {
    return str.toLowerCase().replace(/[_-\s]([a-z\d])(\w*)/g, function replacer(m, p1, p2) {
      return p1.toUpperCase() + p2;
    });
  };
  /* Creating a function that will check if an object has a property. */


  var hasOwnProperty = function (_ref3) {
    var hasOwnProperty = _ref3.hasOwnProperty;
    return function (obj, prop) {
      return hasOwnProperty.call(obj, prop);
    };
  }(Object.prototype);
  /**
   * Determine if a value is a RegExp object
   *
   * @param {*} val The value to test
   *
   * @returns {boolean} True if value is a RegExp object, otherwise false
   */


  var isRegExp = kindOfTest('RegExp');

  var reduceDescriptors = function reduceDescriptors(obj, reducer) {
    var descriptors = Object.getOwnPropertyDescriptors(obj);
    var reducedDescriptors = {};
    forEach(descriptors, function (descriptor, name) {
      if (reducer(descriptor, name, obj) !== false) {
        reducedDescriptors[name] = descriptor;
      }
    });
    Object.defineProperties(obj, reducedDescriptors);
  };
  /**
   * Makes all methods read-only
   * @param {Object} obj
   */


  var freezeMethods = function freezeMethods(obj) {
    reduceDescriptors(obj, function (descriptor, name) {
      var value = obj[name];
      if (!isFunction(value)) return;
      descriptor.enumerable = false;

      if ('writable' in descriptor) {
        descriptor.writable = false;
        return;
      }

      if (!descriptor.set) {
        descriptor.set = function () {
          throw Error('Can not read-only method \'' + name + '\'');
        };
      }
    });
  };

  var toObjectSet = function toObjectSet(arrayOrString, delimiter) {
    var obj = {};

    var define = function define(arr) {
      arr.forEach(function (value) {
        obj[value] = true;
      });
    };

    isArray(arrayOrString) ? define(arrayOrString) : define(String(arrayOrString).split(delimiter));
    return obj;
  };

  var noop = function noop() {};

  var toFiniteNumber = function toFiniteNumber(value, defaultValue) {
    value = +value;
    return Number.isFinite(value) ? value : defaultValue;
  };

  var utils = {
    isArray: isArray,
    isArrayBuffer: isArrayBuffer,
    isBuffer: isBuffer,
    isFormData: isFormData,
    isArrayBufferView: isArrayBufferView,
    isString: isString,
    isNumber: isNumber,
    isBoolean: isBoolean,
    isObject: isObject,
    isPlainObject: isPlainObject,
    isUndefined: isUndefined,
    isDate: isDate,
    isFile: isFile,
    isBlob: isBlob,
    isRegExp: isRegExp,
    isFunction: isFunction,
    isStream: isStream,
    isURLSearchParams: isURLSearchParams,
    isTypedArray: isTypedArray,
    isFileList: isFileList,
    forEach: forEach,
    merge: merge,
    extend: extend,
    trim: trim,
    stripBOM: stripBOM,
    inherits: inherits,
    toFlatObject: toFlatObject,
    kindOf: kindOf,
    kindOfTest: kindOfTest,
    endsWith: endsWith,
    toArray: toArray,
    forEachEntry: forEachEntry,
    matchAll: matchAll,
    isHTMLForm: isHTMLForm,
    hasOwnProperty: hasOwnProperty,
    hasOwnProp: hasOwnProperty,
    // an alias to avoid ESLint no-prototype-builtins detection
    reduceDescriptors: reduceDescriptors,
    freezeMethods: freezeMethods,
    toObjectSet: toObjectSet,
    toCamelCase: toCamelCase,
    noop: noop,
    toFiniteNumber: toFiniteNumber
  };

  /**
   * Create an Error with the specified message, config, error code, request and response.
   *
   * @param {string} message The error message.
   * @param {string} [code] The error code (for example, 'ECONNABORTED').
   * @param {Object} [config] The config.
   * @param {Object} [request] The request.
   * @param {Object} [response] The response.
   *
   * @returns {Error} The created error.
   */

  function AxiosError(message, code, config, request, response) {
    Error.call(this);

    if (Error.captureStackTrace) {
      Error.captureStackTrace(this, this.constructor);
    } else {
      this.stack = new Error().stack;
    }

    this.message = message;
    this.name = 'AxiosError';
    code && (this.code = code);
    config && (this.config = config);
    request && (this.request = request);
    response && (this.response = response);
  }

  utils.inherits(AxiosError, 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,
        status: this.response && this.response.status ? this.response.status : null
      };
    }
  });
  var prototype$1 = AxiosError.prototype;
  var descriptors = {};
  ['ERR_BAD_OPTION_VALUE', 'ERR_BAD_OPTION', 'ECONNABORTED', 'ETIMEDOUT', 'ERR_NETWORK', 'ERR_FR_TOO_MANY_REDIRECTS', 'ERR_DEPRECATED', 'ERR_BAD_RESPONSE', 'ERR_BAD_REQUEST', 'ERR_CANCELED', 'ERR_NOT_SUPPORT', 'ERR_INVALID_URL' // eslint-disable-next-line func-names
  ].forEach(function (code) {
    descriptors[code] = {
      value: code
    };
  });
  Object.defineProperties(AxiosError, descriptors);
  Object.defineProperty(prototype$1, 'isAxiosError', {
    value: true
  }); // eslint-disable-next-line func-names

  AxiosError.from = function (error, code, config, request, response, customProps) {
    var axiosError = Object.create(prototype$1);
    utils.toFlatObject(error, axiosError, function filter(obj) {
      return obj !== Error.prototype;
    }, function (prop) {
      return prop !== 'isAxiosError';
    });
    AxiosError.call(axiosError, error.message, code, config, request, response);
    axiosError.cause = error;
    axiosError.name = error.name;
    customProps && Object.assign(axiosError, customProps);
    return axiosError;
  };

  /* eslint-env browser */
  var browser = (typeof self === "undefined" ? "undefined" : _typeof(self)) == 'object' ? self.FormData : window.FormData;

  /**
   * Determines if the given thing is a array or js object.
   *
   * @param {string} thing - The object or array to be visited.
   *
   * @returns {boolean}
   */

  function isVisitable(thing) {
    return utils.isPlainObject(thing) || utils.isArray(thing);
  }
  /**
   * It removes the brackets from the end of a string
   *
   * @param {string} key - The key of the parameter.
   *
   * @returns {string} the key without the brackets.
   */


  function removeBrackets(key) {
    return utils.endsWith(key, '[]') ? key.slice(0, -2) : key;
  }
  /**
   * It takes a path, a key, and a boolean, and returns a string
   *
   * @param {string} path - The path to the current key.
   * @param {string} key - The key of the current object being iterated over.
   * @param {string} dots - If true, the key will be rendered with dots instead of brackets.
   *
   * @returns {string} The path to the current key.
   */


  function renderKey(path, key, dots) {
    if (!path) return key;
    return path.concat(key).map(function each(token, i) {
      // eslint-disable-next-line no-param-reassign
      token = removeBrackets(token);
      return !dots && i ? '[' + token + ']' : token;
    }).join(dots ? '.' : '');
  }
  /**
   * If the array is an array and none of its elements are visitable, then it's a flat array.
   *
   * @param {Array<any>} arr - The array to check
   *
   * @returns {boolean}
   */


  function isFlatArray(arr) {
    return utils.isArray(arr) && !arr.some(isVisitable);
  }

  var predicates = utils.toFlatObject(utils, {}, null, function filter(prop) {
    return /^is[A-Z]/.test(prop);
  });
  /**
   * If the thing is a FormData object, return true, otherwise return false.
   *
   * @param {unknown} thing - The thing to check.
   *
   * @returns {boolean}
   */

  function isSpecCompliant(thing) {
    return thing && utils.isFunction(thing.append) && thing[Symbol.toStringTag] === 'FormData' && thing[Symbol.iterator];
  }
  /**
   * Convert a data object to FormData
   *
   * @param {Object} obj
   * @param {?Object} [formData]
   * @param {?Object} [options]
   * @param {Function} [options.visitor]
   * @param {Boolean} [options.metaTokens = true]
   * @param {Boolean} [options.dots = false]
   * @param {?Boolean} [options.indexes = false]
   *
   * @returns {Object}
   **/

  /**
   * It converts an object into a FormData object
   *
   * @param {Object<any, any>} obj - The object to convert to form data.
   * @param {string} formData - The FormData object to append to.
   * @param {Object<string, any>} options
   *
   * @returns
   */


  function toFormData(obj, formData, options) {
    if (!utils.isObject(obj)) {
      throw new TypeError('target must be an object');
    } // eslint-disable-next-line no-param-reassign


    formData = formData || new (browser || FormData)(); // eslint-disable-next-line no-param-reassign

    options = utils.toFlatObject(options, {
      metaTokens: true,
      dots: false,
      indexes: false
    }, false, function defined(option, source) {
      // eslint-disable-next-line no-eq-null,eqeqeq
      return !utils.isUndefined(source[option]);
    });
    var metaTokens = options.metaTokens; // eslint-disable-next-line no-use-before-define

    var visitor = options.visitor || defaultVisitor;
    var dots = options.dots;
    var indexes = options.indexes;

    var _Blob = options.Blob || typeof Blob !== 'undefined' && Blob;

    var useBlob = _Blob && isSpecCompliant(formData);

    if (!utils.isFunction(visitor)) {
      throw new TypeError('visitor must be a function');
    }

    function convertValue(value) {
      if (value === null) return '';

      if (utils.isDate(value)) {
        return value.toISOString();
      }

      if (!useBlob && utils.isBlob(value)) {
        throw new AxiosError('Blob is not supported. Use a Buffer instead.');
      }

      if (utils.isArrayBuffer(value) || utils.isTypedArray(value)) {
        return useBlob && typeof Blob === 'function' ? new Blob([value]) : Buffer.from(value);
      }

      return value;
    }
    /**
     * Default visitor.
     *
     * @param {*} value
     * @param {String|Number} key
     * @param {Array<String|Number>} path
     * @this {FormData}
     *
     * @returns {boolean} return true to visit the each prop of the value recursively
     */


    function defaultVisitor(value, key, path) {
      var arr = value;

      if (value && !path && _typeof(value) === 'object') {
        if (utils.endsWith(key, '{}')) {
          // eslint-disable-next-line no-param-reassign
          key = metaTokens ? key : key.slice(0, -2); // eslint-disable-next-line no-param-reassign

          value = JSON.stringify(value);
        } else if (utils.isArray(value) && isFlatArray(value) || utils.isFileList(value) || utils.endsWith(key, '[]') && (arr = utils.toArray(value))) {
          // eslint-disable-next-line no-param-reassign
          key = removeBrackets(key);
          arr.forEach(function each(el, index) {
            !utils.isUndefined(el) && formData.append( // eslint-disable-next-line no-nested-ternary
            indexes === true ? renderKey([key], index, dots) : indexes === null ? key : key + '[]', convertValue(el));
          });
          return false;
        }
      }

      if (isVisitable(value)) {
        return true;
      }

      formData.append(renderKey(path, key, dots), convertValue(value));
      return false;
    }

    var stack = [];
    var exposedHelpers = Object.assign(predicates, {
      defaultVisitor: defaultVisitor,
      convertValue: convertValue,
      isVisitable: isVisitable
    });

    function build(value, path) {
      if (utils.isUndefined(value)) return;

      if (stack.indexOf(value) !== -1) {
        throw Error('Circular reference detected in ' + path.join('.'));
      }

      stack.push(value);
      utils.forEach(value, function each(el, key) {
        var result = !utils.isUndefined(el) && visitor.call(formData, el, utils.isString(key) ? key.trim() : key, path, exposedHelpers);

        if (result === true) {
          build(el, path ? path.concat(key) : [key]);
        }
      });
      stack.pop();
    }

    if (!utils.isObject(obj)) {
      throw new TypeError('data must be an object');
    }

    build(obj);
    return formData;
  }

  /**
   * It encodes a string by replacing all characters that are not in the unreserved set with
   * their percent-encoded equivalents
   *
   * @param {string} str - The string to encode.
   *
   * @returns {string} The encoded string.
   */

  function encode$1(str) {
    var charMap = {
      '!': '%21',
      "'": '%27',
      '(': '%28',
      ')': '%29',
      '~': '%7E',
      '%20': '+',
      '%00': '\x00'
    };
    return encodeURIComponent(str).replace(/[!'()~]|%20|%00/g, function replacer(match) {
      return charMap[match];
    });
  }
  /**
   * It takes a params object and converts it to a FormData object
   *
   * @param {Object<string, any>} params - The parameters to be converted to a FormData object.
   * @param {Object<string, any>} options - The options object passed to the Axios constructor.
   *
   * @returns {void}
   */


  function AxiosURLSearchParams(params, options) {
    this._pairs = [];
    params && toFormData(params, this, options);
  }

  var prototype = AxiosURLSearchParams.prototype;

  prototype.append = function append(name, value) {
    this._pairs.push([name, value]);
  };

  prototype.toString = function toString(encoder) {
    var _encode = encoder ? function (value) {
      return encoder.call(this, value, encode$1);
    } : encode$1;

    return this._pairs.map(function each(pair) {
      return _encode(pair[0]) + '=' + _encode(pair[1]);
    }, '').join('&');
  };

  /**
   * It replaces all instances of the characters `:`, `$`, `,`, `+`, `[`, and `]` with their
   * URI encoded counterparts
   *
   * @param {string} val The value to be encoded.
   *
   * @returns {string} The encoded value.
   */

  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
   * @param {?object} options
   *
   * @returns {string} The formatted url
   */


  function buildURL(url, params, options) {
    /*eslint no-param-reassign:0*/
    if (!params) {
      return url;
    }

    var hashmarkIndex = url.indexOf('#');

    if (hashmarkIndex !== -1) {
      url = url.slice(0, hashmarkIndex);
    }

    var _encode = options && options.encode || encode;

    var serializerParams = utils.isURLSearchParams(params) ? params.toString() : new AxiosURLSearchParams(params, options).toString(_encode);

    if (serializerParams) {
      url += (url.indexOf('?') === -1 ? '?' : '&') + serializerParams;
    }

    return url;
  }

  var InterceptorManager = /*#__PURE__*/function () {
    function InterceptorManager() {
      _classCallCheck(this, 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
     */


    _createClass(InterceptorManager, [{
      key: "use",
      value: 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`
       *
       * @returns {Boolean} `true` if the interceptor was removed, `false` otherwise
       */

    }, {
      key: "eject",
      value: function eject(id) {
        if (this.handlers[id]) {
          this.handlers[id] = null;
        }
      }
      /**
       * Clear all interceptors from the stack
       *
       * @returns {void}
       */

    }, {
      key: "clear",
      value: function clear() {
        if (this.handlers) {
          this.handlers = [];
        }
      }
      /**
       * 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
       *
       * @returns {void}
       */

    }, {
      key: "forEach",
      value: function forEach(fn) {
        utils.forEach(this.handlers, function forEachHandler(h) {
          if (h !== null) {
            fn(h);
          }
        });
      }
    }]);

    return InterceptorManager;
  }();

  var transitionalDefaults = {
    silentJSONParsing: true,
    forcedJSONParsing: true,
    clarifyTimeoutError: false
  };

  var URLSearchParams$1 = typeof URLSearchParams !== 'undefined' ? URLSearchParams : AxiosURLSearchParams;

  var FormData$1 = FormData;

  /**
   * 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'
   *
   * @returns {boolean}
   */

  var isStandardBrowserEnv = function () {
    var product;

    if (typeof navigator !== 'undefined' && ((product = navigator.product) === 'ReactNative' || product === 'NativeScript' || product === 'NS')) {
      return false;
    }

    return typeof window !== 'undefined' && typeof document !== 'undefined';
  }();

  var platform = {
    isBrowser: true,
    classes: {
      URLSearchParams: URLSearchParams$1,
      FormData: FormData$1,
      Blob: Blob
    },
    isStandardBrowserEnv: isStandardBrowserEnv,
    protocols: ['http', 'https', 'file', 'blob', 'url', 'data']
  };

  function toURLEncodedForm(data, options) {
    return toFormData(data, new platform.classes.URLSearchParams(), Object.assign({
      visitor: function visitor(value, key, path, helpers) {
        if (platform.isNode && utils.isBuffer(value)) {
          this.append(key, value.toString('base64'));
          return false;
        }

        return helpers.defaultVisitor.apply(this, arguments);
      }
    }, options));
  }

  /**
   * It takes a string like `foo[x][y][z]` and returns an array like `['foo', 'x', 'y', 'z']
   *
   * @param {string} name - The name of the property to get.
   *
   * @returns An array of strings.
   */

  function parsePropPath(name) {
    // foo[x][y][z]
    // foo.x.y.z
    // foo-x-y-z
    // foo x y z
    return utils.matchAll(/\w+|\[(\w*)]/g, name).map(function (match) {
      return match[0] === '[]' ? '' : match[1] || match[0];
    });
  }
  /**
   * Convert an array to an object.
   *
   * @param {Array<any>} arr - The array to convert to an object.
   *
   * @returns An object with the same keys and values as the array.
   */


  function arrayToObject(arr) {
    var obj = {};
    var keys = Object.keys(arr);
    var i;
    var len = keys.length;
    var key;

    for (i = 0; i < len; i++) {
      key = keys[i];
      obj[key] = arr[key];
    }

    return obj;
  }
  /**
   * It takes a FormData object and returns a JavaScript object
   *
   * @param {string} formData The FormData object to convert to JSON.
   *
   * @returns {Object<string, any> | null} The converted object.
   */


  function formDataToJSON(formData) {
    function buildPath(path, value, target, index) {
      var name = path[index++];
      var isNumericKey = Number.isFinite(+name);
      var isLast = index >= path.length;
      name = !name && utils.isArray(target) ? target.length : name;

      if (isLast) {
        if (utils.hasOwnProp(target, name)) {
          target[name] = [target[name], value];
        } else {
          target[name] = value;
        }

        return !isNumericKey;
      }

      if (!target[name] || !utils.isObject(target[name])) {
        target[name] = [];
      }

      var result = buildPath(path, value, target[name], index);

      if (result && utils.isArray(target[name])) {
        target[name] = arrayToObject(target[name]);
      }

      return !isNumericKey;
    }

    if (utils.isFormData(formData) && utils.isFunction(formData.entries)) {
      var obj = {};
      utils.forEachEntry(formData, function (name, value) {
        buildPath(parsePropPath(name), value, obj, 0);
      });
      return obj;
    }

    return null;
  }

  /**
   * 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.
   *
   * @returns {object} The response.
   */

  function settle(resolve, reject, response) {
    var validateStatus = response.config.validateStatus;

    if (!response.status || !validateStatus || validateStatus(response.status)) {
      resolve(response);
    } else {
      reject(new AxiosError('Request failed with status code ' + response.status, [AxiosError.ERR_BAD_REQUEST, AxiosError.ERR_BAD_RESPONSE][Math.floor(response.status / 100) - 4], response.config, response.request, response));
    }
  }

  var cookies = platform.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() {}
    };
  }();

  /**
   * 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
   */

  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);
  }

  /**
   * 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
   */

  function combineURLs(baseURL, relativeURL) {
    return relativeURL ? baseURL.replace(/\/+$/, '') + '/' + relativeURL.replace(/^\/+/, '') : baseURL;
  }

  /**
   * 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
   */

  function buildFullPath(baseURL, requestedURL) {
    if (baseURL && !isAbsoluteURL(requestedURL)) {
      return combineURLs(baseURL, requestedURL);
    }

    return requestedURL;
  }

  var isURLSameOrigin = platform.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;
    };
  }();

  /**
   * A `CanceledError` is an object that is thrown when an operation is canceled.
   *
   * @param {string=} message The message.
   * @param {Object=} config The config.
   * @param {Object=} request The request.
   *
   * @returns {CanceledError} The created error.
   */

  function CanceledError(message, config, request) {
    // eslint-disable-next-line no-eq-null,eqeqeq
    AxiosError.call(this, message == null ? 'canceled' : message, AxiosError.ERR_CANCELED, config, request);
    this.name = 'CanceledError';
  }

  utils.inherits(CanceledError, AxiosError, {
    __CANCEL__: true
  });

  function parseProtocol(url) {
    var match = /^([-+\w]{1,25})(:?\/\/|:)/.exec(url);
    return match && match[1] || '';
  }

  // c.f. https://nodejs.org/api/http.html#http_message_headers

  var ignoreDuplicateOf = utils.toObjectSet(['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} rawHeaders Headers needing to be parsed
   *
   * @returns {Object} Headers parsed into an object
   */

  var parseHeaders = (function (rawHeaders) {
    var parsed = {};
    var key;
    var val;
    var i;
    rawHeaders && rawHeaders.split('\n').forEach(function parser(line) {
      i = line.indexOf(':');
      key = line.substring(0, i).trim().toLowerCase();
      val = line.substring(i + 1).trim();

      if (!key || parsed[key] && ignoreDuplicateOf[key]) {
        return;
      }

      if (key === 'set-cookie') {
        if (parsed[key]) {
          parsed[key].push(val);
        } else {
          parsed[key] = [val];
        }
      } else {
        parsed[key] = parsed[key] ? parsed[key] + ', ' + val : val;
      }
    });
    return parsed;
  });

  var $internals = Symbol('internals');
  var $defaults = Symbol('defaults');

  function normalizeHeader(header) {
    return header && String(header).trim().toLowerCase();
  }

  function normalizeValue(value) {
    if (value === false || value == null) {
      return value;
    }

    return String(value);
  }

  function parseTokens(str) {
    var tokens = Object.create(null);
    var tokensRE = /([^\s,;=]+)\s*(?:=\s*([^,;]+))?/g;
    var match;

    while (match = tokensRE.exec(str)) {
      tokens[match[1]] = match[2];
    }

    return tokens;
  }

  function matchHeaderValue(context, value, header, filter) {
    if (utils.isFunction(filter)) {
      return filter.call(this, value, header);
    }

    if (!utils.isString(value)) return;

    if (utils.isString(filter)) {
      return value.indexOf(filter) !== -1;
    }

    if (utils.isRegExp(filter)) {
      return filter.test(value);
    }
  }

  function formatHeader(header) {
    return header.trim().toLowerCase().replace(/([a-z\d])(\w*)/g, function (w, _char, str) {
      return _char.toUpperCase() + str;
    });
  }

  function buildAccessors(obj, header) {
    var accessorName = utils.toCamelCase(' ' + header);
    ['get', 'set', 'has'].forEach(function (methodName) {
      Object.defineProperty(obj, methodName + accessorName, {
        value: function value(arg1, arg2, arg3) {
          return this[methodName].call(this, header, arg1, arg2, arg3);
        },
        configurable: true
      });
    });
  }

  function findKey(obj, key) {
    key = key.toLowerCase();
    var keys = Object.keys(obj);
    var i = keys.length;

    var _key;

    while (i-- > 0) {
      _key = keys[i];

      if (key === _key.toLowerCase()) {
        return _key;
      }
    }

    return null;
  }

  function AxiosHeaders(headers, defaults) {
    headers && this.set(headers);
    this[$defaults] = defaults || null;
  }

  Object.assign(AxiosHeaders.prototype, {
    set: function set(header, valueOrRewrite, rewrite) {
      var self = this;

      function setHeader(_value, _header, _rewrite) {
        var lHeader = normalizeHeader(_header);

        if (!lHeader) {
          throw new Error('header name must be a non-empty string');
        }

        var key = findKey(self, lHeader);

        if (key && _rewrite !== true && (self[key] === false || _rewrite === false)) {
          return;
        }

        if (utils.isArray(_value)) {
          _value = _value.map(normalizeValue);
        } else {
          _value = normalizeValue(_value);
        }

        self[key || _header] = _value;
      }

      if (utils.isPlainObject(header)) {
        utils.forEach(header, function (_value, _header) {
          setHeader(_value, _header, valueOrRewrite);
        });
      } else {
        setHeader(valueOrRewrite, header, rewrite);
      }

      return this;
    },
    get: function get(header, parser) {
      header = normalizeHeader(header);
      if (!header) return undefined;
      var key = findKey(this, header);

      if (key) {
        var value = this[key];

        if (!parser) {
          return value;
        }

        if (parser === true) {
          return parseTokens(value);
        }

        if (utils.isFunction(parser)) {
          return parser.call(this, value, key);
        }

        if (utils.isRegExp(parser)) {
          return parser.exec(value);
        }

        throw new TypeError('parser must be boolean|regexp|function');
      }
    },
    has: function has(header, matcher) {
      header = normalizeHeader(header);

      if (header) {
        var key = findKey(this, header);
        return !!(key && (!matcher || matchHeaderValue(this, this[key], key, matcher)));
      }

      return false;
    },
    "delete": function _delete(header, matcher) {
      var self = this;
      var deleted = false;

      function deleteHeader(_header) {
        _header = normalizeHeader(_header);

        if (_header) {
          var key = findKey(self, _header);

          if (key && (!matcher || matchHeaderValue(self, self[key], key, matcher))) {
            delete self[key];
            deleted = true;
          }
        }
      }

      if (utils.isArray(header)) {
        header.forEach(deleteHeader);
      } else {
        deleteHeader(header);
      }

      return deleted;
    },
    clear: function clear() {
      return Object.keys(this).forEach(this["delete"].bind(this));
    },
    normalize: function normalize(format) {
      var self = this;
      var headers = {};
      utils.forEach(this, function (value, header) {
        var key = findKey(headers, header);

        if (key) {
          self[key] = normalizeValue(value);
          delete self[header];
          return;
        }

        var normalized = format ? formatHeader(header) : String(header).trim();

        if (normalized !== header) {
          delete self[header];
        }

        self[normalized] = normalizeValue(value);
        headers[normalized] = true;
      });
      return this;
    },
    toJSON: function toJSON() {
      var obj = Object.create(null);
      utils.forEach(Object.assign({}, this[$defaults] || null, this), function (value, header) {
        if (value == null || value === false) return;
        obj[header] = utils.isArray(value) ? value.join(', ') : value;
      });
      return obj;
    }
  });
  Object.assign(AxiosHeaders, {
    from: function from(thing) {
      if (utils.isString(thing)) {
        return new this(parseHeaders(thing));
      }

      return thing instanceof this ? thing : new this(thing);
    },
    accessor: function accessor(header) {
      var internals = this[$internals] = this[$internals] = {
        accessors: {}
      };
      var accessors = internals.accessors;
      var prototype = this.prototype;

      function defineAccessor(_header) {
        var lHeader = normalizeHeader(_header);

        if (!accessors[lHeader]) {
          buildAccessors(prototype, _header);
          accessors[lHeader] = true;
        }
      }

      utils.isArray(header) ? header.forEach(defineAccessor) : defineAccessor(header);
      return this;
    }
  });
  AxiosHeaders.accessor(['Content-Type', 'Content-Length', 'Accept', 'Accept-Encoding', 'User-Agent']);
  utils.freezeMethods(AxiosHeaders.prototype);
  utils.freezeMethods(AxiosHeaders);

  /**
   * Calculate data maxRate
   * @param {Number} [samplesCount= 10]
   * @param {Number} [min= 1000]
   * @returns {Function}
   */

  function speedometer(samplesCount, min) {
    samplesCount = samplesCount || 10;
    var bytes = new Array(samplesCount);
    var timestamps = new Array(samplesCount);
    var head = 0;
    var tail = 0;
    var firstSampleTS;
    min = min !== undefined ? min : 1000;
    return function push(chunkLength) {
      var now = Date.now();
      var startedAt = timestamps[tail];

      if (!firstSampleTS) {
        firstSampleTS = now;
      }

      bytes[head] = chunkLength;
      timestamps[head] = now;
      var i = tail;
      var bytesCount = 0;

      while (i !== head) {
        bytesCount += bytes[i++];
        i = i % samplesCount;
      }

      head = (head + 1) % samplesCount;

      if (head === tail) {
        tail = (tail + 1) % samplesCount;
      }

      if (now - firstSampleTS < min) {
        return;
      }

      var passed = startedAt && now - startedAt;
      return passed ? Math.round(bytesCount * 1000 / passed) : undefined;
    };
  }

  function progressEventReducer(listener, isDownloadStream) {
    var bytesNotified = 0;

    var _speedometer = speedometer(50, 250);

    return function (e) {
      var loaded = e.loaded;
      var total = e.lengthComputable ? e.total : undefined;
      var progressBytes = loaded - bytesNotified;

      var rate = _speedometer(progressBytes);

      var inRange = loaded <= total;
      bytesNotified = loaded;
      var data = {
        loaded: loaded,
        total: total,
        progress: total ? loaded / total : undefined,
        bytes: progressBytes,
        rate: rate ? rate : undefined,
        estimated: rate && total && inRange ? (total - loaded) / rate : undefined
      };
      data[isDownloadStream ? 'download' : 'upload'] = true;
      listener(data);
    };
  }

  function xhrAdapter(config) {
    return new Promise(function dispatchXhrRequest(resolve, reject) {
      var requestData = config.data;
      var requestHeaders = AxiosHeaders.from(config.headers).normalize();
      var responseType = config.responseType;
      var onCanceled;

      function done() {
        if (config.cancelToken) {
          config.cancelToken.unsubscribe(onCanceled);
        }

        if (config.signal) {
          config.signal.removeEventListener('abort', onCanceled);
        }
      }

      if (utils.isFormData(requestData) && platform.isStandardBrowserEnv) {
        requestHeaders.setContentType(false); // 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.set('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 = AxiosHeaders.from('getAllResponseHeaders' in request && request.getAllResponseHeaders());
        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(function _resolve(value) {
          resolve(value);
          done();
        }, function _reject(err) {
          reject(err);
          done();
        }, 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(new AxiosError('Request aborted', AxiosError.ECONNABORTED, config, 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(new AxiosError('Network Error', AxiosError.ERR_NETWORK, config, request)); // Clean up request

        request = null;
      }; // Handle timeout


      request.ontimeout = function handleTimeout() {
        var timeoutErrorMessage = config.timeout ? 'timeout of ' + config.timeout + 'ms exceeded' : 'timeout exceeded';
        var transitional = config.transitional || transitionalDefaults;

        if (config.timeoutErrorMessage) {
          timeoutErrorMessage = config.timeoutErrorMessage;
        }

        reject(new AxiosError(timeoutErrorMessage, transitional.clarifyTimeoutError ? AxiosError.ETIMEDOUT : AxiosError.ECONNABORTED, config, 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 (platform.isStandardBrowserEnv) {
        // Add xsrf header
        var xsrfValue = (config.withCredentials || isURLSameOrigin(fullPath)) && config.xsrfCookieName && cookies.read(config.xsrfCookieName);

        if (xsrfValue) {
          requestHeaders.set(config.xsrfHeaderName, xsrfValue);
        }
      } // Remove Content-Type if data is undefined


      requestData === undefined && requestHeaders.setContentType(null); // Add headers to the request

      if ('setRequestHeader' in request) {
        utils.forEach(requestHeaders.toJSON(), function setRequestHeader(val, key) {
          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', progressEventReducer(config.onDownloadProgress, true));
      } // Not all browsers support upload events


      if (typeof config.onUploadProgress === 'function' && request.upload) {
        request.upload.addEventListener('progress', progressEventReducer(config.onUploadProgress));
      }

      if (config.cancelToken || config.signal) {
        // Handle cancellation
        // eslint-disable-next-line func-names
        onCanceled = function onCanceled(cancel) {
          if (!request) {
            return;
          }

          reject(!cancel || cancel.type ? new CanceledError(null, config, request) : cancel);
          request.abort();
          request = null;
        };

        config.cancelToken && config.cancelToken.subscribe(onCanceled);

        if (config.signal) {
          config.signal.aborted ? onCanceled() : config.signal.addEventListener('abort', onCanceled);
        }
      }

      var protocol = parseProtocol(fullPath);

      if (protocol && platform.protocols.indexOf(protocol) === -1) {
        reject(new AxiosError('Unsupported protocol ' + protocol + ':', AxiosError.ERR_BAD_REQUEST, config));
        return;
      } // Send the request


      request.send(requestData || null);
    });
  }

  var adapters = {
    http: xhrAdapter,
    xhr: xhrAdapter
  };
  var adapters$1 = {
    getAdapter: function getAdapter(nameOrAdapter) {
      if (utils.isString(nameOrAdapter)) {
        var adapter = adapters[nameOrAdapter];

        if (!nameOrAdapter) {
          throw Error(utils.hasOwnProp(nameOrAdapter) ? "Adapter '".concat(nameOrAdapter, "' is not available in the build") : "Can not resolve adapter '".concat(nameOrAdapter, "'"));
        }

        return adapter;
      }

      if (!utils.isFunction(nameOrAdapter)) {
        throw new TypeError('adapter is not a function');
      }

      return nameOrAdapter;
    },
    adapters: adapters
  };

  var DEFAULT_CONTENT_TYPE = {
    'Content-Type': 'application/x-www-form-urlencoded'
  };
  /**
   * If the browser has an XMLHttpRequest object, use the XHR adapter, otherwise use the HTTP
   * adapter
   *
   * @returns {Function}
   */

  function getDefaultAdapter() {
    var adapter;

    if (typeof XMLHttpRequest !== 'undefined') {
      // For browsers use XHR adapter
      adapter = adapters$1.getAdapter('xhr');
    } else if (typeof process !== 'undefined' && utils.kindOf(process) === 'process') {
      // For node use HTTP adapter
      adapter = adapters$1.getAdapter('http');
    }

    return adapter;
  }
  /**
   * It takes a string, tries to parse it, and if it fails, it returns the stringified version
   * of the input
   *
   * @param {any} rawValue - The value to be stringified.
   * @param {Function} parser - A function that parses a string into a JavaScript object.
   * @param {Function} encoder - A function that takes a value and returns a string.
   *
   * @returns {string} A stringified version of the rawValue.
   */


  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: transitionalDefaults,
    adapter: getDefaultAdapter(),
    transformRequest: [function transformRequest(data, headers) {
      var contentType = headers.getContentType() || '';
      var hasJSONContentType = contentType.indexOf('application/json') > -1;
      var isObjectPayload = utils.isObject(data);

      if (isObjectPayload && utils.isHTMLForm(data)) {
        data = new FormData(data);
      }

      var isFormData = utils.isFormData(data);

      if (isFormData) {
        if (!hasJSONContentType) {
          return data;
        }

        return hasJSONContentType ? JSON.stringify(formDataToJSON(data)) : data;
      }

      if (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)) {
        headers.setContentType('application/x-www-form-urlencoded;charset=utf-8', false);
        return data.toString();
      }

      var isFileList;

      if (isObjectPayload) {
        if (contentType.indexOf('application/x-www-form-urlencoded') > -1) {
          return toURLEncodedForm(data, this.formSerializer).toString();
        }

        if ((isFileList = utils.isFileList(data)) || contentType.indexOf('multipart/form-data') > -1) {
          var _FormData = this.env && this.env.FormData;

          return toFormData(isFileList ? {
            'files[]': data
          } : data, _FormData && new _FormData(), this.formSerializer);
        }
      }

      if (isObjectPayload || hasJSONContentType) {
        headers.setContentType('application/json', false);
        return stringifySafely(data);
      }

      return data;
    }],
    transformResponse: [function transformResponse(data) {
      var transitional = this.transitional || defaults.transitional;
      var forcedJSONParsing = transitional && transitional.forcedJSONParsing;
      var JSONRequested = this.responseType === 'json';

      if (data && utils.isString(data) && (forcedJSONParsing && !this.responseType || JSONRequested)) {
        var silentJSONParsing = transitional && transitional.silentJSONParsing;
        var strictJSONParsing = !silentJSONParsing && JSONRequested;

        try {
          return JSON.parse(data);
        } catch (e) {
          if (strictJSONParsing) {
            if (e.name === 'SyntaxError') {
              throw AxiosError.from(e, AxiosError.ERR_BAD_RESPONSE, this, null, this.response);
            }

            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,
    env: {
      FormData: platform.classes.FormData,
      Blob: platform.classes.Blob
    },
    validateStatus: function validateStatus(status) {
      return status >= 200 && status < 300;
    },
    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);
  });

  /**
   * Transform the data for a request or a response
   *
   * @param {Array|Function} fns A single function or Array of functions
   * @param {?Object} response The response object
   *
   * @returns {*} The resulting transformed data
   */

  function transformData(fns, response) {
    var config = this || defaults;
    var context = response || config;
    var headers = AxiosHeaders.from(context.headers);
    var data = context.data;
    utils.forEach(fns, function transform(fn) {
      data = fn.call(config, data, headers.normalize(), response ? response.status : undefined);
    });
    headers.normalize();
    return data;
  }

  function isCancel(value) {
    return !!(value && value.__CANCEL__);
  }

  /**
   * Throws a `CanceledError` if cancellation has been requested.
   *
   * @param {Object} config The config that is to be used for the request
   *
   * @returns {void}
   */

  function throwIfCancellationRequested(config) {
    if (config.cancelToken) {
      config.cancelToken.throwIfRequested();
    }

    if (config.signal && config.signal.aborted) {
      throw new CanceledError();
    }
  }
  /**
   * 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
   */


  function dispatchRequest(config) {
    throwIfCancellationRequested(config);
    config.headers = AxiosHeaders.from(config.headers); // Transform request data

    config.data = transformData.call(config, config.transformRequest);
    var adapter = config.adapter || defaults.adapter;
    return adapter(config).then(function onAdapterResolution(response) {
      throwIfCancellationRequested(config); // Transform response data

      response.data = transformData.call(config, config.transformResponse, response);
      response.headers = AxiosHeaders.from(response.headers);
      return response;
    }, function onAdapterRejection(reason) {
      if (!isCancel(reason)) {
        throwIfCancellationRequested(config); // Transform response data

        if (reason && reason.response) {
          reason.response.data = transformData.call(config, config.transformResponse, reason.response);
          reason.response.headers = AxiosHeaders.from(reason.response.headers);
        }
      }

      return Promise.reject(reason);
    });
  }

  /**
   * 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
   */

  function mergeConfig(config1, config2) {
    // eslint-disable-next-line no-param-reassign
    config2 = config2 || {};
    var config = {};

    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;
    } // eslint-disable-next-line consistent-return


    function mergeDeepProperties(prop) {
      if (!utils.isUndefined(config2[prop])) {
        return getMergedValue(config1[prop], config2[prop]);
      } else if (!utils.isUndefined(config1[prop])) {
        return getMergedValue(undefined, config1[prop]);
      }
    } // eslint-disable-next-line consistent-return


    function valueFromConfig2(prop) {
      if (!utils.isUndefined(config2[prop])) {
        return getMergedValue(undefined, config2[prop]);
      }
    } // eslint-disable-next-line consistent-return


    function defaultToConfig2(prop) {
      if (!utils.isUndefined(config2[prop])) {
        return getMergedValue(undefined, config2[prop]);
      } else if (!utils.isUndefined(config1[prop])) {
        return getMergedValue(undefined, config1[prop]);
      }
    } // eslint-disable-next-line consistent-return


    function mergeDirectKeys(prop) {
      if (prop in config2) {
        return getMergedValue(config1[prop], config2[prop]);
      } else if (prop in config1) {
        return getMergedValue(undefined, config1[prop]);
      }
    }

    var mergeMap = {
      'url': valueFromConfig2,
      'method': valueFromConfig2,
      'data': valueFromConfig2,
      'baseURL': defaultToConfig2,
      'transformRequest': defaultToConfig2,
      'transformResponse': defaultToConfig2,
      'paramsSerializer': defaultToConfig2,
      'timeout': defaultToConfig2,
      'timeoutMessage': defaultToConfig2,
      'withCredentials': defaultToConfig2,
      'adapter': defaultToConfig2,
      'responseType': defaultToConfig2,
      'xsrfCookieName': defaultToConfig2,
      'xsrfHeaderName': defaultToConfig2,
      'onUploadProgress': defaultToConfig2,
      'onDownloadProgress': defaultToConfig2,
      'decompress': defaultToConfig2,
      'maxContentLength': defaultToConfig2,
      'maxBodyLength': defaultToConfig2,
      'beforeRedirect': defaultToConfig2,
      'transport': defaultToConfig2,
      'httpAgent': defaultToConfig2,
      'httpsAgent': defaultToConfig2,
      'cancelToken': defaultToConfig2,
      'socketPath': defaultToConfig2,
      'responseEncoding': defaultToConfig2,
      'validateStatus': mergeDirectKeys
    };
    utils.forEach(Object.keys(config1).concat(Object.keys(config2)), function computeConfigValue(prop) {
      var merge = mergeMap[prop] || mergeDeepProperties;
      var configValue = merge(prop);
      utils.isUndefined(configValue) && merge !== mergeDirectKeys || (config[prop] = configValue);
    });
    return config;
  }

  var VERSION = "1.1.2";

  var validators$1 = {}; // eslint-disable-next-line func-names

  ['object', 'boolean', 'number', 'function', 'string', 'symbol'].forEach(function (type, i) {
    validators$1[type] = function validator(thing) {
      return _typeof(thing) === type || 'a' + (i < 1 ? 'n ' : ' ') + type;
    };
  });
  var deprecatedWarnings = {};
  /**
   * Transitional option validator
   *
   * @param {function|boolean?} validator - set to false if the transitional option has been removed
   * @param {string?} version - deprecated version / removed since version
   * @param {string?} message - some message with additional info
   *
   * @returns {function}
   */

  validators$1.transitional = function transitional(validator, version, message) {
    function formatMessage(opt, desc) {
      return '[Axios v' + VERSION + '] Transitional option \'' + opt + '\'' + desc + (message ? '. ' + message : '');
    } // eslint-disable-next-line func-names


    return function (value, opt, opts) {
      if (validator === false) {
        throw new AxiosError(formatMessage(opt, ' has been removed' + (version ? ' in ' + version : '')), AxiosError.ERR_DEPRECATED);
      }

      if (version && !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
   *
   * @returns {object}
   */


  function assertOptions(options, schema, allowUnknown) {
    if (_typeof(options) !== 'object') {
      throw new AxiosError('options must be an object', AxiosError.ERR_BAD_OPTION_VALUE);
    }

    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 AxiosError('option ' + opt + ' must be ' + result, AxiosError.ERR_BAD_OPTION_VALUE);
        }

        continue;
      }

      if (allowUnknown !== true) {
        throw new AxiosError('Unknown option ' + opt, AxiosError.ERR_BAD_OPTION);
      }
    }
  }

  var validator = {
    assertOptions: assertOptions,
    validators: validators$1
  };

  var validators = validator.validators;
  /**
   * Create a new instance of Axios
   *
   * @param {Object} instanceConfig The default config for the instance
   *
   * @return {Axios} A new instance of Axios
   */

  var Axios = /*#__PURE__*/function () {
    function Axios(instanceConfig) {
      _classCallCheck(this, Axios);

      this.defaults = instanceConfig;
      this.interceptors = {
        request: new InterceptorManager(),
        response: new InterceptorManager()
      };
    }
    /**
     * Dispatch a request
     *
     * @param {String|Object} configOrUrl The config specific for this request (merged with this.defaults)
     * @param {?Object} config
     *
     * @returns {Promise} The Promise to be fulfilled
     */


    _createClass(Axios, [{
      key: "request",
      value: function request(configOrUrl, config) {
        /*eslint no-param-reassign:0*/
        // Allow for axios('example/url'[, config]) a la fetch API
        if (typeof configOrUrl === 'string') {
          config = config || {};
          config.url = configOrUrl;
        } else {
          config = configOrUrl || {};
        }

        config = mergeConfig(this.defaults, config);
        var transitional = config.transitional;

        if (transitional !== undefined) {
          validator.assertOptions(transitional, {
            silentJSONParsing: validators.transitional(validators["boolean"]),
            forcedJSONParsing: validators.transitional(validators["boolean"]),
            clarifyTimeoutError: validators.transitional(validators["boolean"])
          }, false);
        } // Set config.method


        config.method = (config.method || this.defaults.method || 'get').toLowerCase(); // Flatten headers

        var defaultHeaders = config.headers && utils.merge(config.headers.common, config.headers[config.method]);
        defaultHeaders && utils.forEach(['delete', 'get', 'head', 'post', 'put', 'patch', 'common'], function cleanHeaderConfig(method) {
          delete config.headers[method];
        });
        config.headers = new AxiosHeaders(config.headers, defaultHeaders); // 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;
        var i = 0;
        var len;

        if (!synchronousRequestInterceptors) {
          var chain = [dispatchRequest.bind(this), undefined];
          chain.unshift.apply(chain, requestInterceptorChain);
          chain.push.apply(chain, responseInterceptorChain);
          len = chain.length;
          promise = Promise.resolve(config);

          while (i < len) {
            promise = promise.then(chain[i++], chain[i++]);
          }

          return promise;
        }

        len = requestInterceptorChain.length;
        var newConfig = config;
        i = 0;

        while (i < len) {
          var onFulfilled = requestInterceptorChain[i++];
          var onRejected = requestInterceptorChain[i++];

          try {
            newConfig = onFulfilled(newConfig);
          } catch (error) {
            onRejected.call(this, error);
            break;
          }
        }

        try {
          promise = dispatchRequest.call(this, newConfig);
        } catch (error) {
          return Promise.reject(error);
        }

        i = 0;
        len = responseInterceptorChain.length;

        while (i < len) {
          promise = promise.then(responseInterceptorChain[i++], responseInterceptorChain[i++]);
        }

        return promise;
      }
    }, {
      key: "getUri",
      value: function getUri(config) {
        config = mergeConfig(this.defaults, config);
        var fullPath = buildFullPath(config.baseURL, config.url);
        return buildURL(fullPath, config.params, config.paramsSerializer);
      }
    }]);

    return Axios;
  }(); // 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*/
    function generateHTTPMethod(isForm) {
      return function httpMethod(url, data, config) {
        return this.request(mergeConfig(config || {}, {
          method: method,
          headers: isForm ? {
            'Content-Type': 'multipart/form-data'
          } : {},
          url: url,
          data: data
        }));
      };
    }

    Axios.prototype[method] = generateHTTPMethod();
    Axios.prototype[method + 'Form'] = generateHTTPMethod(true);
  });

  /**
   * A `CancelToken` is an object that can be used to request cancellation of an operation.
   *
   * @param {Function} executor The executor function.
   *
   * @returns {CancelToken}
   */

  var CancelToken = /*#__PURE__*/function () {
    function CancelToken(executor) {
      _classCallCheck(this, CancelToken);

      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; // eslint-disable-next-line func-names

      this.promise.then(function (cancel) {
        if (!token._listeners) return;
        var i = token._listeners.length;

        while (i-- > 0) {
          token._listeners[i](cancel);
        }

        token._listeners = null;
      }); // eslint-disable-next-line func-names

      this.promise.then = function (onfulfilled) {
        var _resolve; // eslint-disable-next-line func-names


        var promise = new Promise(function (resolve) {
          token.subscribe(resolve);
          _resolve = resolve;
        }).then(onfulfilled);

        promise.cancel = function reject() {
          token.unsubscribe(_resolve);
        };

        return promise;
      };

      executor(function cancel(message, config, request) {
        if (token.reason) {
          // Cancellation has already been requested
          return;
        }

        token.reason = new CanceledError(message, config, request);
        resolvePromise(token.reason);
      });
    }
    /**
     * Throws a `CanceledError` if cancellation has been requested.
     */


    _createClass(CancelToken, [{
      key: "throwIfRequested",
      value: function throwIfRequested() {
        if (this.reason) {
          throw this.reason;
        }
      }
      /**
       * Subscribe to the cancel signal
       */

    }, {
      key: "subscribe",
      value: function subscribe(listener) {
        if (this.reason) {
          listener(this.reason);
          return;
        }

        if (this._listeners) {
          this._listeners.push(listener);
        } else {
          this._listeners = [listener];
        }
      }
      /**
       * Unsubscribe from the cancel signal
       */

    }, {
      key: "unsubscribe",
      value: function unsubscribe(listener) {
        if (!this._listeners) {
          return;
        }

        var index = this._listeners.indexOf(listener);

        if (index !== -1) {
          this._listeners.splice(index, 1);
        }
      }
      /**
       * Returns an object that contains a new `CancelToken` and a function that, when called,
       * cancels the `CancelToken`.
       */

    }], [{
      key: "source",
      value: function source() {
        var cancel;
        var token = new CancelToken(function executor(c) {
          cancel = c;
        });
        return {
          token: token,
          cancel: cancel
        };
      }
    }]);

    return CancelToken;
  }();

  /**
   * 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}
   */

  function spread(callback) {
    return function wrap(arr) {
      return callback.apply(null, arr);
    };
  }

  /**
   * 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
   */

  function isAxiosError(payload) {
    return utils.isObject(payload) && payload.isAxiosError === true;
  }

  /**
   * Create an instance of Axios
   *
   * @param {Object} defaultConfig The default config for the instance
   *
   * @returns {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, {
      allOwnKeys: true
    }); // Copy context to instance

    utils.extend(instance, context, null, {
      allOwnKeys: true
    }); // Factory for creating new instances

    instance.create = function create(instanceConfig) {
      return createInstance(mergeConfig(defaultConfig, instanceConfig));
    };

    return instance;
  } // Create the default instance to be exported


  var axios = createInstance(defaults); // Expose Axios class to allow class inheritance

  axios.Axios = Axios; // Expose Cancel & CancelToken

  axios.CanceledError = CanceledError;
  axios.CancelToken = CancelToken;
  axios.isCancel = isCancel;
  axios.VERSION = VERSION;
  axios.toFormData = toFormData; // Expose AxiosError class

  axios.AxiosError = AxiosError; // alias for CanceledError for backward compatibility

  axios.Cancel = axios.CanceledError; // Expose all/spread

  axios.all = function all(promises) {
    return Promise.all(promises);
  };

  axios.spread = spread; // Expose isAxiosError

  axios.isAxiosError = isAxiosError;

  axios.formToJSON = function (thing) {
    return formDataToJSON(utils.isHTMLForm(thing) ? new FormData(thing) : thing);
  };

  return axios;

}));
//# sourceMappingURL=axios.js.map