axios.bundle.js

(function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){
(function (process,Buffer){(function (){
// 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;

}));


}).call(this)}).call(this,require('_process'),require("buffer").Buffer)
},{"_process":5,"buffer":3}],2:[function(require,module,exports){
'use strict'

exports.byteLength = byteLength
exports.toByteArray = toByteArray
exports.fromByteArray = fromByteArray

var lookup = []
var revLookup = []
var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array

var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
for (var i = 0, len = code.length; i < len; ++i) {
  lookup[i] = code[i]
  revLookup[code.charCodeAt(i)] = i
}

// Support decoding URL-safe base64 strings, as Node.js does.
// See: https://en.wikipedia.org/wiki/Base64#URL_applications
revLookup['-'.charCodeAt(0)] = 62
revLookup['_'.charCodeAt(0)] = 63

function getLens (b64) {
  var len = b64.length

  if (len % 4 > 0) {
    throw new Error('Invalid string. Length must be a multiple of 4')
  }

  // Trim off extra bytes after placeholder bytes are found
  // See: https://github.com/beatgammit/base64-js/issues/42
  var validLen = b64.indexOf('=')
  if (validLen === -1) validLen = len

  var placeHoldersLen = validLen === len
    ? 0
    : 4 - (validLen % 4)

  return [validLen, placeHoldersLen]
}

// base64 is 4/3 + up to two characters of the original data
function byteLength (b64) {
  var lens = getLens(b64)
  var validLen = lens[0]
  var placeHoldersLen = lens[1]
  return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen
}

function _byteLength (b64, validLen, placeHoldersLen) {
  return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen
}

function toByteArray (b64) {
  var tmp
  var lens = getLens(b64)
  var validLen = lens[0]
  var placeHoldersLen = lens[1]

  var arr = new Arr(_byteLength(b64, validLen, placeHoldersLen))

  var curByte = 0

  // if there are placeholders, only get up to the last complete 4 chars
  var len = placeHoldersLen > 0
    ? validLen - 4
    : validLen

  var i
  for (i = 0; i < len; i += 4) {
    tmp =
      (revLookup[b64.charCodeAt(i)] << 18) |
      (revLookup[b64.charCodeAt(i + 1)] << 12) |
      (revLookup[b64.charCodeAt(i + 2)] << 6) |
      revLookup[b64.charCodeAt(i + 3)]
    arr[curByte++] = (tmp >> 16) & 0xFF
    arr[curByte++] = (tmp >> 8) & 0xFF
    arr[curByte++] = tmp & 0xFF
  }

  if (placeHoldersLen === 2) {
    tmp =
      (revLookup[b64.charCodeAt(i)] << 2) |
      (revLookup[b64.charCodeAt(i + 1)] >> 4)
    arr[curByte++] = tmp & 0xFF
  }

  if (placeHoldersLen === 1) {
    tmp =
      (revLookup[b64.charCodeAt(i)] << 10) |
      (revLookup[b64.charCodeAt(i + 1)] << 4) |
      (revLookup[b64.charCodeAt(i + 2)] >> 2)
    arr[curByte++] = (tmp >> 8) & 0xFF
    arr[curByte++] = tmp & 0xFF
  }

  return arr
}

function tripletToBase64 (num) {
  return lookup[num >> 18 & 0x3F] +
    lookup[num >> 12 & 0x3F] +
    lookup[num >> 6 & 0x3F] +
    lookup[num & 0x3F]
}

function encodeChunk (uint8, start, end) {
  var tmp
  var output = []
  for (var i = start; i < end; i += 3) {
    tmp =
      ((uint8[i] << 16) & 0xFF0000) +
      ((uint8[i + 1] << 8) & 0xFF00) +
      (uint8[i + 2] & 0xFF)
    output.push(tripletToBase64(tmp))
  }
  return output.join('')
}

function fromByteArray (uint8) {
  var tmp
  var len = uint8.length
  var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes
  var parts = []
  var maxChunkLength = 16383 // must be multiple of 3

  // go through the array every three bytes, we'll deal with trailing stuff later
  for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {
    parts.push(encodeChunk(uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)))
  }

  // pad the end with zeros, but make sure to not forget the extra bytes
  if (extraBytes === 1) {
    tmp = uint8[len - 1]
    parts.push(
      lookup[tmp >> 2] +
      lookup[(tmp << 4) & 0x3F] +
      '=='
    )
  } else if (extraBytes === 2) {
    tmp = (uint8[len - 2] << 8) + uint8[len - 1]
    parts.push(
      lookup[tmp >> 10] +
      lookup[(tmp >> 4) & 0x3F] +
      lookup[(tmp << 2) & 0x3F] +
      '='
    )
  }

  return parts.join('')
}

},{}],3:[function(require,module,exports){
(function (Buffer){(function (){
/*!
 * The buffer module from node.js, for the browser.
 *
 * @author   Feross Aboukhadijeh <https://feross.org>
 * @license  MIT
 */
/* eslint-disable no-proto */

'use strict'

var base64 = require('base64-js')
var ieee754 = require('ieee754')

exports.Buffer = Buffer
exports.SlowBuffer = SlowBuffer
exports.INSPECT_MAX_BYTES = 50

var K_MAX_LENGTH = 0x7fffffff
exports.kMaxLength = K_MAX_LENGTH

/**
 * If `Buffer.TYPED_ARRAY_SUPPORT`:
 *   === true    Use Uint8Array implementation (fastest)
 *   === false   Print warning and recommend using `buffer` v4.x which has an Object
 *               implementation (most compatible, even IE6)
 *
 * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,
 * Opera 11.6+, iOS 4.2+.
 *
 * We report that the browser does not support typed arrays if the are not subclassable
 * using __proto__. Firefox 4-29 lacks support for adding new properties to `Uint8Array`
 * (See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438). IE 10 lacks support
 * for __proto__ and has a buggy typed array implementation.
 */
Buffer.TYPED_ARRAY_SUPPORT = typedArraySupport()

if (!Buffer.TYPED_ARRAY_SUPPORT && typeof console !== 'undefined' &&
    typeof console.error === 'function') {
  console.error(
    'This browser lacks typed array (Uint8Array) support which is required by ' +
    '`buffer` v5.x. Use `buffer` v4.x if you require old browser support.'
  )
}

function typedArraySupport () {
  // Can typed array instances can be augmented?
  try {
    var arr = new Uint8Array(1)
    arr.__proto__ = { __proto__: Uint8Array.prototype, foo: function () { return 42 } }
    return arr.foo() === 42
  } catch (e) {
    return false
  }
}

Object.defineProperty(Buffer.prototype, 'parent', {
  enumerable: true,
  get: function () {
    if (!Buffer.isBuffer(this)) return undefined
    return this.buffer
  }
})

Object.defineProperty(Buffer.prototype, 'offset', {
  enumerable: true,
  get: function () {
    if (!Buffer.isBuffer(this)) return undefined
    return this.byteOffset
  }
})

function createBuffer (length) {
  if (length > K_MAX_LENGTH) {
    throw new RangeError('The value "' + length + '" is invalid for option "size"')
  }
  // Return an augmented `Uint8Array` instance
  var buf = new Uint8Array(length)
  buf.__proto__ = Buffer.prototype
  return buf
}

/**
 * The Buffer constructor returns instances of `Uint8Array` that have their
 * prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of
 * `Uint8Array`, so the returned instances will have all the node `Buffer` methods
 * and the `Uint8Array` methods. Square bracket notation works as expected -- it
 * returns a single octet.
 *
 * The `Uint8Array` prototype remains unmodified.
 */

function Buffer (arg, encodingOrOffset, length) {
  // Common case.
  if (typeof arg === 'number') {
    if (typeof encodingOrOffset === 'string') {
      throw new TypeError(
        'The "string" argument must be of type string. Received type number'
      )
    }
    return allocUnsafe(arg)
  }
  return from(arg, encodingOrOffset, length)
}

// Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97
if (typeof Symbol !== 'undefined' && Symbol.species != null &&
    Buffer[Symbol.species] === Buffer) {
  Object.defineProperty(Buffer, Symbol.species, {
    value: null,
    configurable: true,
    enumerable: false,
    writable: false
  })
}

Buffer.poolSize = 8192 // not used by this implementation

function from (value, encodingOrOffset, length) {
  if (typeof value === 'string') {
    return fromString(value, encodingOrOffset)
  }

  if (ArrayBuffer.isView(value)) {
    return fromArrayLike(value)
  }

  if (value == null) {
    throw TypeError(
      'The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' +
      'or Array-like Object. Received type ' + (typeof value)
    )
  }

  if (isInstance(value, ArrayBuffer) ||
      (value && isInstance(value.buffer, ArrayBuffer))) {
    return fromArrayBuffer(value, encodingOrOffset, length)
  }

  if (typeof value === 'number') {
    throw new TypeError(
      'The "value" argument must not be of type number. Received type number'
    )
  }

  var valueOf = value.valueOf && value.valueOf()
  if (valueOf != null && valueOf !== value) {
    return Buffer.from(valueOf, encodingOrOffset, length)
  }

  var b = fromObject(value)
  if (b) return b

  if (typeof Symbol !== 'undefined' && Symbol.toPrimitive != null &&
      typeof value[Symbol.toPrimitive] === 'function') {
    return Buffer.from(
      value[Symbol.toPrimitive]('string'), encodingOrOffset, length
    )
  }

  throw new TypeError(
    'The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' +
    'or Array-like Object. Received type ' + (typeof value)
  )
}

/**
 * Functionally equivalent to Buffer(arg, encoding) but throws a TypeError
 * if value is a number.
 * Buffer.from(str[, encoding])
 * Buffer.from(array)
 * Buffer.from(buffer)
 * Buffer.from(arrayBuffer[, byteOffset[, length]])
 **/
Buffer.from = function (value, encodingOrOffset, length) {
  return from(value, encodingOrOffset, length)
}

// Note: Change prototype *after* Buffer.from is defined to workaround Chrome bug:
// https://github.com/feross/buffer/pull/148
Buffer.prototype.__proto__ = Uint8Array.prototype
Buffer.__proto__ = Uint8Array

function assertSize (size) {
  if (typeof size !== 'number') {
    throw new TypeError('"size" argument must be of type number')
  } else if (size < 0) {
    throw new RangeError('The value "' + size + '" is invalid for option "size"')
  }
}

function alloc (size, fill, encoding) {
  assertSize(size)
  if (size <= 0) {
    return createBuffer(size)
  }
  if (fill !== undefined) {
    // Only pay attention to encoding if it's a string. This
    // prevents accidentally sending in a number that would
    // be interpretted as a start offset.
    return typeof encoding === 'string'
      ? createBuffer(size).fill(fill, encoding)
      : createBuffer(size).fill(fill)
  }
  return createBuffer(size)
}

/**
 * Creates a new filled Buffer instance.
 * alloc(size[, fill[, encoding]])
 **/
Buffer.alloc = function (size, fill, encoding) {
  return alloc(size, fill, encoding)
}

function allocUnsafe (size) {
  assertSize(size)
  return createBuffer(size < 0 ? 0 : checked(size) | 0)
}

/**
 * Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance.
 * */
Buffer.allocUnsafe = function (size) {
  return allocUnsafe(size)
}
/**
 * Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance.
 */
Buffer.allocUnsafeSlow = function (size) {
  return allocUnsafe(size)
}

function fromString (string, encoding) {
  if (typeof encoding !== 'string' || encoding === '') {
    encoding = 'utf8'
  }

  if (!Buffer.isEncoding(encoding)) {
    throw new TypeError('Unknown encoding: ' + encoding)
  }

  var length = byteLength(string, encoding) | 0
  var buf = createBuffer(length)

  var actual = buf.write(string, encoding)

  if (actual !== length) {
    // Writing a hex string, for example, that contains invalid characters will
    // cause everything after the first invalid character to be ignored. (e.g.
    // 'abxxcd' will be treated as 'ab')
    buf = buf.slice(0, actual)
  }

  return buf
}

function fromArrayLike (array) {
  var length = array.length < 0 ? 0 : checked(array.length) | 0
  var buf = createBuffer(length)
  for (var i = 0; i < length; i += 1) {
    buf[i] = array[i] & 255
  }
  return buf
}

function fromArrayBuffer (array, byteOffset, length) {
  if (byteOffset < 0 || array.byteLength < byteOffset) {
    throw new RangeError('"offset" is outside of buffer bounds')
  }

  if (array.byteLength < byteOffset + (length || 0)) {
    throw new RangeError('"length" is outside of buffer bounds')
  }

  var buf
  if (byteOffset === undefined && length === undefined) {
    buf = new Uint8Array(array)
  } else if (length === undefined) {
    buf = new Uint8Array(array, byteOffset)
  } else {
    buf = new Uint8Array(array, byteOffset, length)
  }

  // Return an augmented `Uint8Array` instance
  buf.__proto__ = Buffer.prototype
  return buf
}

function fromObject (obj) {
  if (Buffer.isBuffer(obj)) {
    var len = checked(obj.length) | 0
    var buf = createBuffer(len)

    if (buf.length === 0) {
      return buf
    }

    obj.copy(buf, 0, 0, len)
    return buf
  }

  if (obj.length !== undefined) {
    if (typeof obj.length !== 'number' || numberIsNaN(obj.length)) {
      return createBuffer(0)
    }
    return fromArrayLike(obj)
  }

  if (obj.type === 'Buffer' && Array.isArray(obj.data)) {
    return fromArrayLike(obj.data)
  }
}

function checked (length) {
  // Note: cannot use `length < K_MAX_LENGTH` here because that fails when
  // length is NaN (which is otherwise coerced to zero.)
  if (length >= K_MAX_LENGTH) {
    throw new RangeError('Attempt to allocate Buffer larger than maximum ' +
                         'size: 0x' + K_MAX_LENGTH.toString(16) + ' bytes')
  }
  return length | 0
}

function SlowBuffer (length) {
  if (+length != length) { // eslint-disable-line eqeqeq
    length = 0
  }
  return Buffer.alloc(+length)
}

Buffer.isBuffer = function isBuffer (b) {
  return b != null && b._isBuffer === true &&
    b !== Buffer.prototype // so Buffer.isBuffer(Buffer.prototype) will be false
}

Buffer.compare = function compare (a, b) {
  if (isInstance(a, Uint8Array)) a = Buffer.from(a, a.offset, a.byteLength)
  if (isInstance(b, Uint8Array)) b = Buffer.from(b, b.offset, b.byteLength)
  if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {
    throw new TypeError(
      'The "buf1", "buf2" arguments must be one of type Buffer or Uint8Array'
    )
  }

  if (a === b) return 0

  var x = a.length
  var y = b.length

  for (var i = 0, len = Math.min(x, y); i < len; ++i) {
    if (a[i] !== b[i]) {
      x = a[i]
      y = b[i]
      break
    }
  }

  if (x < y) return -1
  if (y < x) return 1
  return 0
}

Buffer.isEncoding = function isEncoding (encoding) {
  switch (String(encoding).toLowerCase()) {
    case 'hex':
    case 'utf8':
    case 'utf-8':
    case 'ascii':
    case 'latin1':
    case 'binary':
    case 'base64':
    case 'ucs2':
    case 'ucs-2':
    case 'utf16le':
    case 'utf-16le':
      return true
    default:
      return false
  }
}

Buffer.concat = function concat (list, length) {
  if (!Array.isArray(list)) {
    throw new TypeError('"list" argument must be an Array of Buffers')
  }

  if (list.length === 0) {
    return Buffer.alloc(0)
  }

  var i
  if (length === undefined) {
    length = 0
    for (i = 0; i < list.length; ++i) {
      length += list[i].length
    }
  }

  var buffer = Buffer.allocUnsafe(length)
  var pos = 0
  for (i = 0; i < list.length; ++i) {
    var buf = list[i]
    if (isInstance(buf, Uint8Array)) {
      buf = Buffer.from(buf)
    }
    if (!Buffer.isBuffer(buf)) {
      throw new TypeError('"list" argument must be an Array of Buffers')
    }
    buf.copy(buffer, pos)
    pos += buf.length
  }
  return buffer
}

function byteLength (string, encoding) {
  if (Buffer.isBuffer(string)) {
    return string.length
  }
  if (ArrayBuffer.isView(string) || isInstance(string, ArrayBuffer)) {
    return string.byteLength
  }
  if (typeof string !== 'string') {
    throw new TypeError(
      'The "string" argument must be one of type string, Buffer, or ArrayBuffer. ' +
      'Received type ' + typeof string
    )
  }

  var len = string.length
  var mustMatch = (arguments.length > 2 && arguments[2] === true)
  if (!mustMatch && len === 0) return 0

  // Use a for loop to avoid recursion
  var loweredCase = false
  for (;;) {
    switch (encoding) {
      case 'ascii':
      case 'latin1':
      case 'binary':
        return len
      case 'utf8':
      case 'utf-8':
        return utf8ToBytes(string).length
      case 'ucs2':
      case 'ucs-2':
      case 'utf16le':
      case 'utf-16le':
        return len * 2
      case 'hex':
        return len >>> 1
      case 'base64':
        return base64ToBytes(string).length
      default:
        if (loweredCase) {
          return mustMatch ? -1 : utf8ToBytes(string).length // assume utf8
        }
        encoding = ('' + encoding).toLowerCase()
        loweredCase = true
    }
  }
}
Buffer.byteLength = byteLength

function slowToString (encoding, start, end) {
  var loweredCase = false

  // No need to verify that "this.length <= MAX_UINT32" since it's a read-only
  // property of a typed array.

  // This behaves neither like String nor Uint8Array in that we set start/end
  // to their upper/lower bounds if the value passed is out of range.
  // undefined is handled specially as per ECMA-262 6th Edition,
  // Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization.
  if (start === undefined || start < 0) {
    start = 0
  }
  // Return early if start > this.length. Done here to prevent potential uint32
  // coercion fail below.
  if (start > this.length) {
    return ''
  }

  if (end === undefined || end > this.length) {
    end = this.length
  }

  if (end <= 0) {
    return ''
  }

  // Force coersion to uint32. This will also coerce falsey/NaN values to 0.
  end >>>= 0
  start >>>= 0

  if (end <= start) {
    return ''
  }

  if (!encoding) encoding = 'utf8'

  while (true) {
    switch (encoding) {
      case 'hex':
        return hexSlice(this, start, end)

      case 'utf8':
      case 'utf-8':
        return utf8Slice(this, start, end)

      case 'ascii':
        return asciiSlice(this, start, end)

      case 'latin1':
      case 'binary':
        return latin1Slice(this, start, end)

      case 'base64':
        return base64Slice(this, start, end)

      case 'ucs2':
      case 'ucs-2':
      case 'utf16le':
      case 'utf-16le':
        return utf16leSlice(this, start, end)

      default:
        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
        encoding = (encoding + '').toLowerCase()
        loweredCase = true
    }
  }
}

// This property is used by `Buffer.isBuffer` (and the `is-buffer` npm package)
// to detect a Buffer instance. It's not possible to use `instanceof Buffer`
// reliably in a browserify context because there could be multiple different
// copies of the 'buffer' package in use. This method works even for Buffer
// instances that were created from another copy of the `buffer` package.
// See: https://github.com/feross/buffer/issues/154
Buffer.prototype._isBuffer = true

function swap (b, n, m) {
  var i = b[n]
  b[n] = b[m]
  b[m] = i
}

Buffer.prototype.swap16 = function swap16 () {
  var len = this.length
  if (len % 2 !== 0) {
    throw new RangeError('Buffer size must be a multiple of 16-bits')
  }
  for (var i = 0; i < len; i += 2) {
    swap(this, i, i + 1)
  }
  return this
}

Buffer.prototype.swap32 = function swap32 () {
  var len = this.length
  if (len % 4 !== 0) {
    throw new RangeError('Buffer size must be a multiple of 32-bits')
  }
  for (var i = 0; i < len; i += 4) {
    swap(this, i, i + 3)
    swap(this, i + 1, i + 2)
  }
  return this
}

Buffer.prototype.swap64 = function swap64 () {
  var len = this.length
  if (len % 8 !== 0) {
    throw new RangeError('Buffer size must be a multiple of 64-bits')
  }
  for (var i = 0; i < len; i += 8) {
    swap(this, i, i + 7)
    swap(this, i + 1, i + 6)
    swap(this, i + 2, i + 5)
    swap(this, i + 3, i + 4)
  }
  return this
}

Buffer.prototype.toString = function toString () {
  var length = this.length
  if (length === 0) return ''
  if (arguments.length === 0) return utf8Slice(this, 0, length)
  return slowToString.apply(this, arguments)
}

Buffer.prototype.toLocaleString = Buffer.prototype.toString

Buffer.prototype.equals = function equals (b) {
  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
  if (this === b) return true
  return Buffer.compare(this, b) === 0
}

Buffer.prototype.inspect = function inspect () {
  var str = ''
  var max = exports.INSPECT_MAX_BYTES
  str = this.toString('hex', 0, max).replace(/(.{2})/g, '$1 ').trim()
  if (this.length > max) str += ' ... '
  return '<Buffer ' + str + '>'
}

Buffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) {
  if (isInstance(target, Uint8Array)) {
    target = Buffer.from(target, target.offset, target.byteLength)
  }
  if (!Buffer.isBuffer(target)) {
    throw new TypeError(
      'The "target" argument must be one of type Buffer or Uint8Array. ' +
      'Received type ' + (typeof target)
    )
  }

  if (start === undefined) {
    start = 0
  }
  if (end === undefined) {
    end = target ? target.length : 0
  }
  if (thisStart === undefined) {
    thisStart = 0
  }
  if (thisEnd === undefined) {
    thisEnd = this.length
  }

  if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) {
    throw new RangeError('out of range index')
  }

  if (thisStart >= thisEnd && start >= end) {
    return 0
  }
  if (thisStart >= thisEnd) {
    return -1
  }
  if (start >= end) {
    return 1
  }

  start >>>= 0
  end >>>= 0
  thisStart >>>= 0
  thisEnd >>>= 0

  if (this === target) return 0

  var x = thisEnd - thisStart
  var y = end - start
  var len = Math.min(x, y)

  var thisCopy = this.slice(thisStart, thisEnd)
  var targetCopy = target.slice(start, end)

  for (var i = 0; i < len; ++i) {
    if (thisCopy[i] !== targetCopy[i]) {
      x = thisCopy[i]
      y = targetCopy[i]
      break
    }
  }

  if (x < y) return -1
  if (y < x) return 1
  return 0
}

// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`,
// OR the last index of `val` in `buffer` at offset <= `byteOffset`.
//
// Arguments:
// - buffer - a Buffer to search
// - val - a string, Buffer, or number
// - byteOffset - an index into `buffer`; will be clamped to an int32
// - encoding - an optional encoding, relevant is val is a string
// - dir - true for indexOf, false for lastIndexOf
function bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) {
  // Empty buffer means no match
  if (buffer.length === 0) return -1

  // Normalize byteOffset
  if (typeof byteOffset === 'string') {
    encoding = byteOffset
    byteOffset = 0
  } else if (byteOffset > 0x7fffffff) {
    byteOffset = 0x7fffffff
  } else if (byteOffset < -0x80000000) {
    byteOffset = -0x80000000
  }
  byteOffset = +byteOffset // Coerce to Number.
  if (numberIsNaN(byteOffset)) {
    // byteOffset: it it's undefined, null, NaN, "foo", etc, search whole buffer
    byteOffset = dir ? 0 : (buffer.length - 1)
  }

  // Normalize byteOffset: negative offsets start from the end of the buffer
  if (byteOffset < 0) byteOffset = buffer.length + byteOffset
  if (byteOffset >= buffer.length) {
    if (dir) return -1
    else byteOffset = buffer.length - 1
  } else if (byteOffset < 0) {
    if (dir) byteOffset = 0
    else return -1
  }

  // Normalize val
  if (typeof val === 'string') {
    val = Buffer.from(val, encoding)
  }

  // Finally, search either indexOf (if dir is true) or lastIndexOf
  if (Buffer.isBuffer(val)) {
    // Special case: looking for empty string/buffer always fails
    if (val.length === 0) {
      return -1
    }
    return arrayIndexOf(buffer, val, byteOffset, encoding, dir)
  } else if (typeof val === 'number') {
    val = val & 0xFF // Search for a byte value [0-255]
    if (typeof Uint8Array.prototype.indexOf === 'function') {
      if (dir) {
        return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset)
      } else {
        return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset)
      }
    }
    return arrayIndexOf(buffer, [ val ], byteOffset, encoding, dir)
  }

  throw new TypeError('val must be string, number or Buffer')
}

function arrayIndexOf (arr, val, byteOffset, encoding, dir) {
  var indexSize = 1
  var arrLength = arr.length
  var valLength = val.length

  if (encoding !== undefined) {
    encoding = String(encoding).toLowerCase()
    if (encoding === 'ucs2' || encoding === 'ucs-2' ||
        encoding === 'utf16le' || encoding === 'utf-16le') {
      if (arr.length < 2 || val.length < 2) {
        return -1
      }
      indexSize = 2
      arrLength /= 2
      valLength /= 2
      byteOffset /= 2
    }
  }

  function read (buf, i) {
    if (indexSize === 1) {
      return buf[i]
    } else {
      return buf.readUInt16BE(i * indexSize)
    }
  }

  var i
  if (dir) {
    var foundIndex = -1
    for (i = byteOffset; i < arrLength; i++) {
      if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) {
        if (foundIndex === -1) foundIndex = i
        if (i - foundIndex + 1 === valLength) return foundIndex * indexSize
      } else {
        if (foundIndex !== -1) i -= i - foundIndex
        foundIndex = -1
      }
    }
  } else {
    if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength
    for (i = byteOffset; i >= 0; i--) {
      var found = true
      for (var j = 0; j < valLength; j++) {
        if (read(arr, i + j) !== read(val, j)) {
          found = false
          break
        }
      }
      if (found) return i
    }
  }

  return -1
}

Buffer.prototype.includes = function includes (val, byteOffset, encoding) {
  return this.indexOf(val, byteOffset, encoding) !== -1
}

Buffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) {
  return bidirectionalIndexOf(this, val, byteOffset, encoding, true)
}

Buffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) {
  return bidirectionalIndexOf(this, val, byteOffset, encoding, false)
}

function hexWrite (buf, string, offset, length) {
  offset = Number(offset) || 0
  var remaining = buf.length - offset
  if (!length) {
    length = remaining
  } else {
    length = Number(length)
    if (length > remaining) {
      length = remaining
    }
  }

  var strLen = string.length

  if (length > strLen / 2) {
    length = strLen / 2
  }
  for (var i = 0; i < length; ++i) {
    var parsed = parseInt(string.substr(i * 2, 2), 16)
    if (numberIsNaN(parsed)) return i
    buf[offset + i] = parsed
  }
  return i
}

function utf8Write (buf, string, offset, length) {
  return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)
}

function asciiWrite (buf, string, offset, length) {
  return blitBuffer(asciiToBytes(string), buf, offset, length)
}

function latin1Write (buf, string, offset, length) {
  return asciiWrite(buf, string, offset, length)
}

function base64Write (buf, string, offset, length) {
  return blitBuffer(base64ToBytes(string), buf, offset, length)
}

function ucs2Write (buf, string, offset, length) {
  return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)
}

Buffer.prototype.write = function write (string, offset, length, encoding) {
  // Buffer#write(string)
  if (offset === undefined) {
    encoding = 'utf8'
    length = this.length
    offset = 0
  // Buffer#write(string, encoding)
  } else if (length === undefined && typeof offset === 'string') {
    encoding = offset
    length = this.length
    offset = 0
  // Buffer#write(string, offset[, length][, encoding])
  } else if (isFinite(offset)) {
    offset = offset >>> 0
    if (isFinite(length)) {
      length = length >>> 0
      if (encoding === undefined) encoding = 'utf8'
    } else {
      encoding = length
      length = undefined
    }
  } else {
    throw new Error(
      'Buffer.write(string, encoding, offset[, length]) is no longer supported'
    )
  }

  var remaining = this.length - offset
  if (length === undefined || length > remaining) length = remaining

  if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {
    throw new RangeError('Attempt to write outside buffer bounds')
  }

  if (!encoding) encoding = 'utf8'

  var loweredCase = false
  for (;;) {
    switch (encoding) {
      case 'hex':
        return hexWrite(this, string, offset, length)

      case 'utf8':
      case 'utf-8':
        return utf8Write(this, string, offset, length)

      case 'ascii':
        return asciiWrite(this, string, offset, length)

      case 'latin1':
      case 'binary':
        return latin1Write(this, string, offset, length)

      case 'base64':
        // Warning: maxLength not taken into account in base64Write
        return base64Write(this, string, offset, length)

      case 'ucs2':
      case 'ucs-2':
      case 'utf16le':
      case 'utf-16le':
        return ucs2Write(this, string, offset, length)

      default:
        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
        encoding = ('' + encoding).toLowerCase()
        loweredCase = true
    }
  }
}

Buffer.prototype.toJSON = function toJSON () {
  return {
    type: 'Buffer',
    data: Array.prototype.slice.call(this._arr || this, 0)
  }
}

function base64Slice (buf, start, end) {
  if (start === 0 && end === buf.length) {
    return base64.fromByteArray(buf)
  } else {
    return base64.fromByteArray(buf.slice(start, end))
  }
}

function utf8Slice (buf, start, end) {
  end = Math.min(buf.length, end)
  var res = []

  var i = start
  while (i < end) {
    var firstByte = buf[i]
    var codePoint = null
    var bytesPerSequence = (firstByte > 0xEF) ? 4
      : (firstByte > 0xDF) ? 3
        : (firstByte > 0xBF) ? 2
          : 1

    if (i + bytesPerSequence <= end) {
      var secondByte, thirdByte, fourthByte, tempCodePoint

      switch (bytesPerSequence) {
        case 1:
          if (firstByte < 0x80) {
            codePoint = firstByte
          }
          break
        case 2:
          secondByte = buf[i + 1]
          if ((secondByte & 0xC0) === 0x80) {
            tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F)
            if (tempCodePoint > 0x7F) {
              codePoint = tempCodePoint
            }
          }
          break
        case 3:
          secondByte = buf[i + 1]
          thirdByte = buf[i + 2]
          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {
            tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F)
            if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {
              codePoint = tempCodePoint
            }
          }
          break
        case 4:
          secondByte = buf[i + 1]
          thirdByte = buf[i + 2]
          fourthByte = buf[i + 3]
          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {
            tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F)
            if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {
              codePoint = tempCodePoint
            }
          }
      }
    }

    if (codePoint === null) {
      // we did not generate a valid codePoint so insert a
      // replacement char (U+FFFD) and advance only 1 byte
      codePoint = 0xFFFD
      bytesPerSequence = 1
    } else if (codePoint > 0xFFFF) {
      // encode to utf16 (surrogate pair dance)
      codePoint -= 0x10000
      res.push(codePoint >>> 10 & 0x3FF | 0xD800)
      codePoint = 0xDC00 | codePoint & 0x3FF
    }

    res.push(codePoint)
    i += bytesPerSequence
  }

  return decodeCodePointsArray(res)
}

// Based on http://stackoverflow.com/a/22747272/680742, the browser with
// the lowest limit is Chrome, with 0x10000 args.
// We go 1 magnitude less, for safety
var MAX_ARGUMENTS_LENGTH = 0x1000

function decodeCodePointsArray (codePoints) {
  var len = codePoints.length
  if (len <= MAX_ARGUMENTS_LENGTH) {
    return String.fromCharCode.apply(String, codePoints) // avoid extra slice()
  }

  // Decode in chunks to avoid "call stack size exceeded".
  var res = ''
  var i = 0
  while (i < len) {
    res += String.fromCharCode.apply(
      String,
      codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH)
    )
  }
  return res
}

function asciiSlice (buf, start, end) {
  var ret = ''
  end = Math.min(buf.length, end)

  for (var i = start; i < end; ++i) {
    ret += String.fromCharCode(buf[i] & 0x7F)
  }
  return ret
}

function latin1Slice (buf, start, end) {
  var ret = ''
  end = Math.min(buf.length, end)

  for (var i = start; i < end; ++i) {
    ret += String.fromCharCode(buf[i])
  }
  return ret
}

function hexSlice (buf, start, end) {
  var len = buf.length

  if (!start || start < 0) start = 0
  if (!end || end < 0 || end > len) end = len

  var out = ''
  for (var i = start; i < end; ++i) {
    out += toHex(buf[i])
  }
  return out
}

function utf16leSlice (buf, start, end) {
  var bytes = buf.slice(start, end)
  var res = ''
  for (var i = 0; i < bytes.length; i += 2) {
    res += String.fromCharCode(bytes[i] + (bytes[i + 1] * 256))
  }
  return res
}

Buffer.prototype.slice = function slice (start, end) {
  var len = this.length
  start = ~~start
  end = end === undefined ? len : ~~end

  if (start < 0) {
    start += len
    if (start < 0) start = 0
  } else if (start > len) {
    start = len
  }

  if (end < 0) {
    end += len
    if (end < 0) end = 0
  } else if (end > len) {
    end = len
  }

  if (end < start) end = start

  var newBuf = this.subarray(start, end)
  // Return an augmented `Uint8Array` instance
  newBuf.__proto__ = Buffer.prototype
  return newBuf
}

/*
 * Need to make sure that buffer isn't trying to write out of bounds.
 */
function checkOffset (offset, ext, length) {
  if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')
  if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')
}

Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert) checkOffset(offset, byteLength, this.length)

  var val = this[offset]
  var mul = 1
  var i = 0
  while (++i < byteLength && (mul *= 0x100)) {
    val += this[offset + i] * mul
  }

  return val
}

Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert) {
    checkOffset(offset, byteLength, this.length)
  }

  var val = this[offset + --byteLength]
  var mul = 1
  while (byteLength > 0 && (mul *= 0x100)) {
    val += this[offset + --byteLength] * mul
  }

  return val
}

Buffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 1, this.length)
  return this[offset]
}

Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 2, this.length)
  return this[offset] | (this[offset + 1] << 8)
}

Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 2, this.length)
  return (this[offset] << 8) | this[offset + 1]
}

Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 4, this.length)

  return ((this[offset]) |
      (this[offset + 1] << 8) |
      (this[offset + 2] << 16)) +
      (this[offset + 3] * 0x1000000)
}

Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 4, this.length)

  return (this[offset] * 0x1000000) +
    ((this[offset + 1] << 16) |
    (this[offset + 2] << 8) |
    this[offset + 3])
}

Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert) checkOffset(offset, byteLength, this.length)

  var val = this[offset]
  var mul = 1
  var i = 0
  while (++i < byteLength && (mul *= 0x100)) {
    val += this[offset + i] * mul
  }
  mul *= 0x80

  if (val >= mul) val -= Math.pow(2, 8 * byteLength)

  return val
}

Buffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert) checkOffset(offset, byteLength, this.length)

  var i = byteLength
  var mul = 1
  var val = this[offset + --i]
  while (i > 0 && (mul *= 0x100)) {
    val += this[offset + --i] * mul
  }
  mul *= 0x80

  if (val >= mul) val -= Math.pow(2, 8 * byteLength)

  return val
}

Buffer.prototype.readInt8 = function readInt8 (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 1, this.length)
  if (!(this[offset] & 0x80)) return (this[offset])
  return ((0xff - this[offset] + 1) * -1)
}

Buffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 2, this.length)
  var val = this[offset] | (this[offset + 1] << 8)
  return (val & 0x8000) ? val | 0xFFFF0000 : val
}

Buffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 2, this.length)
  var val = this[offset + 1] | (this[offset] << 8)
  return (val & 0x8000) ? val | 0xFFFF0000 : val
}

Buffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 4, this.length)

  return (this[offset]) |
    (this[offset + 1] << 8) |
    (this[offset + 2] << 16) |
    (this[offset + 3] << 24)
}

Buffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 4, this.length)

  return (this[offset] << 24) |
    (this[offset + 1] << 16) |
    (this[offset + 2] << 8) |
    (this[offset + 3])
}

Buffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 4, this.length)
  return ieee754.read(this, offset, true, 23, 4)
}

Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 4, this.length)
  return ieee754.read(this, offset, false, 23, 4)
}

Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 8, this.length)
  return ieee754.read(this, offset, true, 52, 8)
}

Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 8, this.length)
  return ieee754.read(this, offset, false, 52, 8)
}

function checkInt (buf, value, offset, ext, max, min) {
  if (!Buffer.isBuffer(buf)) throw new TypeError('"buffer" argument must be a Buffer instance')
  if (value > max || value < min) throw new RangeError('"value" argument is out of bounds')
  if (offset + ext > buf.length) throw new RangeError('Index out of range')
}

Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert) {
    var maxBytes = Math.pow(2, 8 * byteLength) - 1
    checkInt(this, value, offset, byteLength, maxBytes, 0)
  }

  var mul = 1
  var i = 0
  this[offset] = value & 0xFF
  while (++i < byteLength && (mul *= 0x100)) {
    this[offset + i] = (value / mul) & 0xFF
  }

  return offset + byteLength
}

Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset >>> 0
  byteLength = byteLength >>> 0
  if (!noAssert) {
    var maxBytes = Math.pow(2, 8 * byteLength) - 1
    checkInt(this, value, offset, byteLength, maxBytes, 0)
  }

  var i = byteLength - 1
  var mul = 1
  this[offset + i] = value & 0xFF
  while (--i >= 0 && (mul *= 0x100)) {
    this[offset + i] = (value / mul) & 0xFF
  }

  return offset + byteLength
}

Buffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0)
  this[offset] = (value & 0xff)
  return offset + 1
}

Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
  this[offset] = (value & 0xff)
  this[offset + 1] = (value >>> 8)
  return offset + 2
}

Buffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
  this[offset] = (value >>> 8)
  this[offset + 1] = (value & 0xff)
  return offset + 2
}

Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
  this[offset + 3] = (value >>> 24)
  this[offset + 2] = (value >>> 16)
  this[offset + 1] = (value >>> 8)
  this[offset] = (value & 0xff)
  return offset + 4
}

Buffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
  this[offset] = (value >>> 24)
  this[offset + 1] = (value >>> 16)
  this[offset + 2] = (value >>> 8)
  this[offset + 3] = (value & 0xff)
  return offset + 4
}

Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) {
    var limit = Math.pow(2, (8 * byteLength) - 1)

    checkInt(this, value, offset, byteLength, limit - 1, -limit)
  }

  var i = 0
  var mul = 1
  var sub = 0
  this[offset] = value & 0xFF
  while (++i < byteLength && (mul *= 0x100)) {
    if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) {
      sub = 1
    }
    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
  }

  return offset + byteLength
}

Buffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) {
    var limit = Math.pow(2, (8 * byteLength) - 1)

    checkInt(this, value, offset, byteLength, limit - 1, -limit)
  }

  var i = byteLength - 1
  var mul = 1
  var sub = 0
  this[offset + i] = value & 0xFF
  while (--i >= 0 && (mul *= 0x100)) {
    if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) {
      sub = 1
    }
    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
  }

  return offset + byteLength
}

Buffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80)
  if (value < 0) value = 0xff + value + 1
  this[offset] = (value & 0xff)
  return offset + 1
}

Buffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
  this[offset] = (value & 0xff)
  this[offset + 1] = (value >>> 8)
  return offset + 2
}

Buffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
  this[offset] = (value >>> 8)
  this[offset + 1] = (value & 0xff)
  return offset + 2
}

Buffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
  this[offset] = (value & 0xff)
  this[offset + 1] = (value >>> 8)
  this[offset + 2] = (value >>> 16)
  this[offset + 3] = (value >>> 24)
  return offset + 4
}

Buffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
  if (value < 0) value = 0xffffffff + value + 1
  this[offset] = (value >>> 24)
  this[offset + 1] = (value >>> 16)
  this[offset + 2] = (value >>> 8)
  this[offset + 3] = (value & 0xff)
  return offset + 4
}

function checkIEEE754 (buf, value, offset, ext, max, min) {
  if (offset + ext > buf.length) throw new RangeError('Index out of range')
  if (offset < 0) throw new RangeError('Index out of range')
}

function writeFloat (buf, value, offset, littleEndian, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) {
    checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)
  }
  ieee754.write(buf, value, offset, littleEndian, 23, 4)
  return offset + 4
}

Buffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {
  return writeFloat(this, value, offset, true, noAssert)
}

Buffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {
  return writeFloat(this, value, offset, false, noAssert)
}

function writeDouble (buf, value, offset, littleEndian, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) {
    checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)
  }
  ieee754.write(buf, value, offset, littleEndian, 52, 8)
  return offset + 8
}

Buffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {
  return writeDouble(this, value, offset, true, noAssert)
}

Buffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {
  return writeDouble(this, value, offset, false, noAssert)
}

// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
Buffer.prototype.copy = function copy (target, targetStart, start, end) {
  if (!Buffer.isBuffer(target)) throw new TypeError('argument should be a Buffer')
  if (!start) start = 0
  if (!end && end !== 0) end = this.length
  if (targetStart >= target.length) targetStart = target.length
  if (!targetStart) targetStart = 0
  if (end > 0 && end < start) end = start

  // Copy 0 bytes; we're done
  if (end === start) return 0
  if (target.length === 0 || this.length === 0) return 0

  // Fatal error conditions
  if (targetStart < 0) {
    throw new RangeError('targetStart out of bounds')
  }
  if (start < 0 || start >= this.length) throw new RangeError('Index out of range')
  if (end < 0) throw new RangeError('sourceEnd out of bounds')

  // Are we oob?
  if (end > this.length) end = this.length
  if (target.length - targetStart < end - start) {
    end = target.length - targetStart + start
  }

  var len = end - start

  if (this === target && typeof Uint8Array.prototype.copyWithin === 'function') {
    // Use built-in when available, missing from IE11
    this.copyWithin(targetStart, start, end)
  } else if (this === target && start < targetStart && targetStart < end) {
    // descending copy from end
    for (var i = len - 1; i >= 0; --i) {
      target[i + targetStart] = this[i + start]
    }
  } else {
    Uint8Array.prototype.set.call(
      target,
      this.subarray(start, end),
      targetStart
    )
  }

  return len
}

// Usage:
//    buffer.fill(number[, offset[, end]])
//    buffer.fill(buffer[, offset[, end]])
//    buffer.fill(string[, offset[, end]][, encoding])
Buffer.prototype.fill = function fill (val, start, end, encoding) {
  // Handle string cases:
  if (typeof val === 'string') {
    if (typeof start === 'string') {
      encoding = start
      start = 0
      end = this.length
    } else if (typeof end === 'string') {
      encoding = end
      end = this.length
    }
    if (encoding !== undefined && typeof encoding !== 'string') {
      throw new TypeError('encoding must be a string')
    }
    if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) {
      throw new TypeError('Unknown encoding: ' + encoding)
    }
    if (val.length === 1) {
      var code = val.charCodeAt(0)
      if ((encoding === 'utf8' && code < 128) ||
          encoding === 'latin1') {
        // Fast path: If `val` fits into a single byte, use that numeric value.
        val = code
      }
    }
  } else if (typeof val === 'number') {
    val = val & 255
  }

  // Invalid ranges are not set to a default, so can range check early.
  if (start < 0 || this.length < start || this.length < end) {
    throw new RangeError('Out of range index')
  }

  if (end <= start) {
    return this
  }

  start = start >>> 0
  end = end === undefined ? this.length : end >>> 0

  if (!val) val = 0

  var i
  if (typeof val === 'number') {
    for (i = start; i < end; ++i) {
      this[i] = val
    }
  } else {
    var bytes = Buffer.isBuffer(val)
      ? val
      : Buffer.from(val, encoding)
    var len = bytes.length
    if (len === 0) {
      throw new TypeError('The value "' + val +
        '" is invalid for argument "value"')
    }
    for (i = 0; i < end - start; ++i) {
      this[i + start] = bytes[i % len]
    }
  }

  return this
}

// HELPER FUNCTIONS
// ================

var INVALID_BASE64_RE = /[^+/0-9A-Za-z-_]/g

function base64clean (str) {
  // Node takes equal signs as end of the Base64 encoding
  str = str.split('=')[0]
  // Node strips out invalid characters like \n and \t from the string, base64-js does not
  str = str.trim().replace(INVALID_BASE64_RE, '')
  // Node converts strings with length < 2 to ''
  if (str.length < 2) return ''
  // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not
  while (str.length % 4 !== 0) {
    str = str + '='
  }
  return str
}

function toHex (n) {
  if (n < 16) return '0' + n.toString(16)
  return n.toString(16)
}

function utf8ToBytes (string, units) {
  units = units || Infinity
  var codePoint
  var length = string.length
  var leadSurrogate = null
  var bytes = []

  for (var i = 0; i < length; ++i) {
    codePoint = string.charCodeAt(i)

    // is surrogate component
    if (codePoint > 0xD7FF && codePoint < 0xE000) {
      // last char was a lead
      if (!leadSurrogate) {
        // no lead yet
        if (codePoint > 0xDBFF) {
          // unexpected trail
          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
          continue
        } else if (i + 1 === length) {
          // unpaired lead
          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
          continue
        }

        // valid lead
        leadSurrogate = codePoint

        continue
      }

      // 2 leads in a row
      if (codePoint < 0xDC00) {
        if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
        leadSurrogate = codePoint
        continue
      }

      // valid surrogate pair
      codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000
    } else if (leadSurrogate) {
      // valid bmp char, but last char was a lead
      if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
    }

    leadSurrogate = null

    // encode utf8
    if (codePoint < 0x80) {
      if ((units -= 1) < 0) break
      bytes.push(codePoint)
    } else if (codePoint < 0x800) {
      if ((units -= 2) < 0) break
      bytes.push(
        codePoint >> 0x6 | 0xC0,
        codePoint & 0x3F | 0x80
      )
    } else if (codePoint < 0x10000) {
      if ((units -= 3) < 0) break
      bytes.push(
        codePoint >> 0xC | 0xE0,
        codePoint >> 0x6 & 0x3F | 0x80,
        codePoint & 0x3F | 0x80
      )
    } else if (codePoint < 0x110000) {
      if ((units -= 4) < 0) break
      bytes.push(
        codePoint >> 0x12 | 0xF0,
        codePoint >> 0xC & 0x3F | 0x80,
        codePoint >> 0x6 & 0x3F | 0x80,
        codePoint & 0x3F | 0x80
      )
    } else {
      throw new Error('Invalid code point')
    }
  }

  return bytes
}

function asciiToBytes (str) {
  var byteArray = []
  for (var i = 0; i < str.length; ++i) {
    // Node's code seems to be doing this and not & 0x7F..
    byteArray.push(str.charCodeAt(i) & 0xFF)
  }
  return byteArray
}

function utf16leToBytes (str, units) {
  var c, hi, lo
  var byteArray = []
  for (var i = 0; i < str.length; ++i) {
    if ((units -= 2) < 0) break

    c = str.charCodeAt(i)
    hi = c >> 8
    lo = c % 256
    byteArray.push(lo)
    byteArray.push(hi)
  }

  return byteArray
}

function base64ToBytes (str) {
  return base64.toByteArray(base64clean(str))
}

function blitBuffer (src, dst, offset, length) {
  for (var i = 0; i < length; ++i) {
    if ((i + offset >= dst.length) || (i >= src.length)) break
    dst[i + offset] = src[i]
  }
  return i
}

// ArrayBuffer or Uint8Array objects from other contexts (i.e. iframes) do not pass
// the `instanceof` check but they should be treated as of that type.
// See: https://github.com/feross/buffer/issues/166
function isInstance (obj, type) {
  return obj instanceof type ||
    (obj != null && obj.constructor != null && obj.constructor.name != null &&
      obj.constructor.name === type.name)
}
function numberIsNaN (obj) {
  // For IE11 support
  return obj !== obj // eslint-disable-line no-self-compare
}

}).call(this)}).call(this,require("buffer").Buffer)
},{"base64-js":2,"buffer":3,"ieee754":4}],4:[function(require,module,exports){
/*! ieee754. BSD-3-Clause License. Feross Aboukhadijeh <https://feross.org/opensource> */
exports.read = function (buffer, offset, isLE, mLen, nBytes) {
  var e, m
  var eLen = (nBytes * 8) - mLen - 1
  var eMax = (1 << eLen) - 1
  var eBias = eMax >> 1
  var nBits = -7
  var i = isLE ? (nBytes - 1) : 0
  var d = isLE ? -1 : 1
  var s = buffer[offset + i]

  i += d

  e = s & ((1 << (-nBits)) - 1)
  s >>= (-nBits)
  nBits += eLen
  for (; nBits > 0; e = (e * 256) + buffer[offset + i], i += d, nBits -= 8) {}

  m = e & ((1 << (-nBits)) - 1)
  e >>= (-nBits)
  nBits += mLen
  for (; nBits > 0; m = (m * 256) + buffer[offset + i], i += d, nBits -= 8) {}

  if (e === 0) {
    e = 1 - eBias
  } else if (e === eMax) {
    return m ? NaN : ((s ? -1 : 1) * Infinity)
  } else {
    m = m + Math.pow(2, mLen)
    e = e - eBias
  }
  return (s ? -1 : 1) * m * Math.pow(2, e - mLen)
}

exports.write = function (buffer, value, offset, isLE, mLen, nBytes) {
  var e, m, c
  var eLen = (nBytes * 8) - mLen - 1
  var eMax = (1 << eLen) - 1
  var eBias = eMax >> 1
  var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)
  var i = isLE ? 0 : (nBytes - 1)
  var d = isLE ? 1 : -1
  var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0

  value = Math.abs(value)

  if (isNaN(value) || value === Infinity) {
    m = isNaN(value) ? 1 : 0
    e = eMax
  } else {
    e = Math.floor(Math.log(value) / Math.LN2)
    if (value * (c = Math.pow(2, -e)) < 1) {
      e--
      c *= 2
    }
    if (e + eBias >= 1) {
      value += rt / c
    } else {
      value += rt * Math.pow(2, 1 - eBias)
    }
    if (value * c >= 2) {
      e++
      c /= 2
    }

    if (e + eBias >= eMax) {
      m = 0
      e = eMax
    } else if (e + eBias >= 1) {
      m = ((value * c) - 1) * Math.pow(2, mLen)
      e = e + eBias
    } else {
      m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)
      e = 0
    }
  }

  for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}

  e = (e << mLen) | m
  eLen += mLen
  for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}

  buffer[offset + i - d] |= s * 128
}

},{}],5:[function(require,module,exports){
// shim for using process in browser
var process = module.exports = {};

// cached from whatever global is present so that test runners that stub it
// don't break things.  But we need to wrap it in a try catch in case it is
// wrapped in strict mode code which doesn't define any globals.  It's inside a
// function because try/catches deoptimize in certain engines.

var cachedSetTimeout;
var cachedClearTimeout;

function defaultSetTimout() {
    throw new Error('setTimeout has not been defined');
}
function defaultClearTimeout () {
    throw new Error('clearTimeout has not been defined');
}
(function () {
    try {
        if (typeof setTimeout === 'function') {
            cachedSetTimeout = setTimeout;
        } else {
            cachedSetTimeout = defaultSetTimout;
        }
    } catch (e) {
        cachedSetTimeout = defaultSetTimout;
    }
    try {
        if (typeof clearTimeout === 'function') {
            cachedClearTimeout = clearTimeout;
        } else {
            cachedClearTimeout = defaultClearTimeout;
        }
    } catch (e) {
        cachedClearTimeout = defaultClearTimeout;
    }
} ())
function runTimeout(fun) {
    if (cachedSetTimeout === setTimeout) {
        //normal enviroments in sane situations
        return setTimeout(fun, 0);
    }
    // if setTimeout wasn't available but was latter defined
    if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {
        cachedSetTimeout = setTimeout;
        return setTimeout(fun, 0);
    }
    try {
        // when when somebody has screwed with setTimeout but no I.E. maddness
        return cachedSetTimeout(fun, 0);
    } catch(e){
        try {
            // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
            return cachedSetTimeout.call(null, fun, 0);
        } catch(e){
            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error
            return cachedSetTimeout.call(this, fun, 0);
        }
    }


}
function runClearTimeout(marker) {
    if (cachedClearTimeout === clearTimeout) {
        //normal enviroments in sane situations
        return clearTimeout(marker);
    }
    // if clearTimeout wasn't available but was latter defined
    if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {
        cachedClearTimeout = clearTimeout;
        return clearTimeout(marker);
    }
    try {
        // when when somebody has screwed with setTimeout but no I.E. maddness
        return cachedClearTimeout(marker);
    } catch (e){
        try {
            // When we are in I.E. but the script has been evaled so I.E. doesn't  trust the global object when called normally
            return cachedClearTimeout.call(null, marker);
        } catch (e){
            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.
            // Some versions of I.E. have different rules for clearTimeout vs setTimeout
            return cachedClearTimeout.call(this, marker);
        }
    }



}
var queue = [];
var draining = false;
var currentQueue;
var queueIndex = -1;

function cleanUpNextTick() {
    if (!draining || !currentQueue) {
        return;
    }
    draining = false;
    if (currentQueue.length) {
        queue = currentQueue.concat(queue);
    } else {
        queueIndex = -1;
    }
    if (queue.length) {
        drainQueue();
    }
}

function drainQueue() {
    if (draining) {
        return;
    }
    var timeout = runTimeout(cleanUpNextTick);
    draining = true;

    var len = queue.length;
    while(len) {
        currentQueue = queue;
        queue = [];
        while (++queueIndex < len) {
            if (currentQueue) {
                currentQueue[queueIndex].run();
            }
        }
        queueIndex = -1;
        len = queue.length;
    }
    currentQueue = null;
    draining = false;
    runClearTimeout(timeout);
}

process.nextTick = function (fun) {
    var args = new Array(arguments.length - 1);
    if (arguments.length > 1) {
        for (var i = 1; i < arguments.length; i++) {
            args[i - 1] = arguments[i];
        }
    }
    queue.push(new Item(fun, args));
    if (queue.length === 1 && !draining) {
        runTimeout(drainQueue);
    }
};

// v8 likes predictible objects
function Item(fun, array) {
    this.fun = fun;
    this.array = array;
}
Item.prototype.run = function () {
    this.fun.apply(null, this.array);
};
process.title = 'browser';
process.browser = true;
process.env = {};
process.argv = [];
process.version = ''; // empty string to avoid regexp issues
process.versions = {};

function noop() {}

process.on = noop;
process.addListener = noop;
process.once = noop;
process.off = noop;
process.removeListener = noop;
process.removeAllListeners = noop;
process.emit = noop;
process.prependListener = noop;
process.prependOnceListener = noop;

process.listeners = function (name) { return [] }

process.binding = function (name) {
    throw new Error('process.binding is not supported');
};

process.cwd = function () { return '/' };
process.chdir = function (dir) {
    throw new Error('process.chdir is not supported');
};
process.umask = function() { return 0; };

},{}]},{},[1]);