add source maps for socket.io

nicegui/static/socket.io.js

@@ -1,4285 +0,0 @@
-/*!
- * Socket.IO v4.7.1
- * (c) 2014-2023 Guillermo Rauch
- * Released under the MIT License.
- */
-(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.io = 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, _toPropertyKey(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 _extends() {
-    _extends = Object.assign ? Object.assign.bind() : function (target) {
-      for (var i = 1; i < arguments.length; i++) {
-        var source = arguments[i];
-        for (var key in source) {
-          if (Object.prototype.hasOwnProperty.call(source, key)) {
-            target[key] = source[key];
-          }
-        }
-      }
-      return target;
-    };
-    return _extends.apply(this, arguments);
-  }
-  function _inherits(subClass, superClass) {
-    if (typeof superClass !== "function" && superClass !== null) {
-      throw new TypeError("Super expression must either be null or a function");
-    }
-    subClass.prototype = Object.create(superClass && superClass.prototype, {
-      constructor: {
-        value: subClass,
-        writable: true,
-        configurable: true
-      }
-    });
-    Object.defineProperty(subClass, "prototype", {
-      writable: false
-    });
-    if (superClass) _setPrototypeOf(subClass, superClass);
-  }
-  function _getPrototypeOf(o) {
-    _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf.bind() : function _getPrototypeOf(o) {
-      return o.__proto__ || Object.getPrototypeOf(o);
-    };
-    return _getPrototypeOf(o);
-  }
-  function _setPrototypeOf(o, p) {
-    _setPrototypeOf = Object.setPrototypeOf ? Object.setPrototypeOf.bind() : function _setPrototypeOf(o, p) {
-      o.__proto__ = p;
-      return o;
-    };
-    return _setPrototypeOf(o, p);
-  }
-  function _isNativeReflectConstruct() {
-    if (typeof Reflect === "undefined" || !Reflect.construct) return false;
-    if (Reflect.construct.sham) return false;
-    if (typeof Proxy === "function") return true;
-    try {
-      Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {}));
-      return true;
-    } catch (e) {
-      return false;
-    }
-  }
-  function _construct(Parent, args, Class) {
-    if (_isNativeReflectConstruct()) {
-      _construct = Reflect.construct.bind();
-    } else {
-      _construct = function _construct(Parent, args, Class) {
-        var a = [null];
-        a.push.apply(a, args);
-        var Constructor = Function.bind.apply(Parent, a);
-        var instance = new Constructor();
-        if (Class) _setPrototypeOf(instance, Class.prototype);
-        return instance;
-      };
-    }
-    return _construct.apply(null, arguments);
-  }
-  function _isNativeFunction(fn) {
-    return Function.toString.call(fn).indexOf("[native code]") !== -1;
-  }
-  function _wrapNativeSuper(Class) {
-    var _cache = typeof Map === "function" ? new Map() : undefined;
-    _wrapNativeSuper = function _wrapNativeSuper(Class) {
-      if (Class === null || !_isNativeFunction(Class)) return Class;
-      if (typeof Class !== "function") {
-        throw new TypeError("Super expression must either be null or a function");
-      }
-      if (typeof _cache !== "undefined") {
-        if (_cache.has(Class)) return _cache.get(Class);
-        _cache.set(Class, Wrapper);
-      }
-      function Wrapper() {
-        return _construct(Class, arguments, _getPrototypeOf(this).constructor);
-      }
-      Wrapper.prototype = Object.create(Class.prototype, {
-        constructor: {
-          value: Wrapper,
-          enumerable: false,
-          writable: true,
-          configurable: true
-        }
-      });
-      return _setPrototypeOf(Wrapper, Class);
-    };
-    return _wrapNativeSuper(Class);
-  }
-  function _assertThisInitialized(self) {
-    if (self === void 0) {
-      throw new ReferenceError("this hasn't been initialised - super() hasn't been called");
-    }
-    return self;
-  }
-  function _possibleConstructorReturn(self, call) {
-    if (call && (typeof call === "object" || typeof call === "function")) {
-      return call;
-    } else if (call !== void 0) {
-      throw new TypeError("Derived constructors may only return object or undefined");
-    }
-    return _assertThisInitialized(self);
-  }
-  function _createSuper(Derived) {
-    var hasNativeReflectConstruct = _isNativeReflectConstruct();
-    return function _createSuperInternal() {
-      var Super = _getPrototypeOf(Derived),
-        result;
-      if (hasNativeReflectConstruct) {
-        var NewTarget = _getPrototypeOf(this).constructor;
-        result = Reflect.construct(Super, arguments, NewTarget);
-      } else {
-        result = Super.apply(this, arguments);
-      }
-      return _possibleConstructorReturn(this, result);
-    };
-  }
-  function _superPropBase(object, property) {
-    while (!Object.prototype.hasOwnProperty.call(object, property)) {
-      object = _getPrototypeOf(object);
-      if (object === null) break;
-    }
-    return object;
-  }
-  function _get() {
-    if (typeof Reflect !== "undefined" && Reflect.get) {
-      _get = Reflect.get.bind();
-    } else {
-      _get = function _get(target, property, receiver) {
-        var base = _superPropBase(target, property);
-        if (!base) return;
-        var desc = Object.getOwnPropertyDescriptor(base, property);
-        if (desc.get) {
-          return desc.get.call(arguments.length < 3 ? target : receiver);
-        }
-        return desc.value;
-      };
-    }
-    return _get.apply(this, arguments);
-  }
-  function _unsupportedIterableToArray(o, minLen) {
-    if (!o) return;
-    if (typeof o === "string") return _arrayLikeToArray(o, minLen);
-    var n = Object.prototype.toString.call(o).slice(8, -1);
-    if (n === "Object" && o.constructor) n = o.constructor.name;
-    if (n === "Map" || n === "Set") return Array.from(o);
-    if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen);
-  }
-  function _arrayLikeToArray(arr, len) {
-    if (len == null || len > arr.length) len = arr.length;
-    for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i];
-    return arr2;
-  }
-  function _createForOfIteratorHelper(o, allowArrayLike) {
-    var it = typeof Symbol !== "undefined" && o[Symbol.iterator] || o["@@iterator"];
-    if (!it) {
-      if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === "number") {
-        if (it) o = it;
-        var i = 0;
-        var F = function () {};
-        return {
-          s: F,
-          n: function () {
-            if (i >= o.length) return {
-              done: true
-            };
-            return {
-              done: false,
-              value: o[i++]
-            };
-          },
-          e: function (e) {
-            throw e;
-          },
-          f: F
-        };
-      }
-      throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
-    }
-    var normalCompletion = true,
-      didErr = false,
-      err;
-    return {
-      s: function () {
-        it = it.call(o);
-      },
-      n: function () {
-        var step = it.next();
-        normalCompletion = step.done;
-        return step;
-      },
-      e: function (e) {
-        didErr = true;
-        err = e;
-      },
-      f: function () {
-        try {
-          if (!normalCompletion && it.return != null) it.return();
-        } finally {
-          if (didErr) throw err;
-        }
-      }
-    };
-  }
-  function _toPrimitive(input, hint) {
-    if (typeof input !== "object" || input === null) return input;
-    var prim = input[Symbol.toPrimitive];
-    if (prim !== undefined) {
-      var res = prim.call(input, hint || "default");
-      if (typeof res !== "object") return res;
-      throw new TypeError("@@toPrimitive must return a primitive value.");
-    }
-    return (hint === "string" ? String : Number)(input);
-  }
-  function _toPropertyKey(arg) {
-    var key = _toPrimitive(arg, "string");
-    return typeof key === "symbol" ? key : String(key);
-  }
-
-  var PACKET_TYPES = Object.create(null); // no Map = no polyfill
-  PACKET_TYPES["open"] = "0";
-  PACKET_TYPES["close"] = "1";
-  PACKET_TYPES["ping"] = "2";
-  PACKET_TYPES["pong"] = "3";
-  PACKET_TYPES["message"] = "4";
-  PACKET_TYPES["upgrade"] = "5";
-  PACKET_TYPES["noop"] = "6";
-  var PACKET_TYPES_REVERSE = Object.create(null);
-  Object.keys(PACKET_TYPES).forEach(function (key) {
-    PACKET_TYPES_REVERSE[PACKET_TYPES[key]] = key;
-  });
-  var ERROR_PACKET = {
-    type: "error",
-    data: "parser error"
-  };
-
-  var withNativeBlob$1 = typeof Blob === "function" || typeof Blob !== "undefined" && Object.prototype.toString.call(Blob) === "[object BlobConstructor]";
-  var withNativeArrayBuffer$2 = typeof ArrayBuffer === "function";
-  // ArrayBuffer.isView method is not defined in IE10
-  var isView$1 = function isView(obj) {
-    return typeof ArrayBuffer.isView === "function" ? ArrayBuffer.isView(obj) : obj && obj.buffer instanceof ArrayBuffer;
-  };
-  var encodePacket = function encodePacket(_ref, supportsBinary, callback) {
-    var type = _ref.type,
-      data = _ref.data;
-    if (withNativeBlob$1 && data instanceof Blob) {
-      if (supportsBinary) {
-        return callback(data);
-      } else {
-        return encodeBlobAsBase64(data, callback);
-      }
-    } else if (withNativeArrayBuffer$2 && (data instanceof ArrayBuffer || isView$1(data))) {
-      if (supportsBinary) {
-        return callback(data);
-      } else {
-        return encodeBlobAsBase64(new Blob([data]), callback);
-      }
-    }
-    // plain string
-    return callback(PACKET_TYPES[type] + (data || ""));
-  };
-  var encodeBlobAsBase64 = function encodeBlobAsBase64(data, callback) {
-    var fileReader = new FileReader();
-    fileReader.onload = function () {
-      var content = fileReader.result.split(",")[1];
-      callback("b" + (content || ""));
-    };
-    return fileReader.readAsDataURL(data);
-  };
-  function toArray(data) {
-    if (data instanceof Uint8Array) {
-      return data;
-    } else if (data instanceof ArrayBuffer) {
-      return new Uint8Array(data);
-    } else {
-      return new Uint8Array(data.buffer, data.byteOffset, data.byteLength);
-    }
-  }
-  var TEXT_ENCODER;
-  function encodePacketToBinary(packet, callback) {
-    if (withNativeBlob$1 && packet.data instanceof Blob) {
-      return packet.data.arrayBuffer().then(toArray).then(callback);
-    } else if (withNativeArrayBuffer$2 && (packet.data instanceof ArrayBuffer || isView$1(packet.data))) {
-      return callback(toArray(packet.data));
-    }
-    encodePacket(packet, false, function (encoded) {
-      if (!TEXT_ENCODER) {
-        TEXT_ENCODER = new TextEncoder();
-      }
-      callback(TEXT_ENCODER.encode(encoded));
-    });
-  }
-
-  // imported from https://github.com/socketio/base64-arraybuffer
-  var chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
-  // Use a lookup table to find the index.
-  var lookup$1 = typeof Uint8Array === 'undefined' ? [] : new Uint8Array(256);
-  for (var i$1 = 0; i$1 < chars.length; i$1++) {
-    lookup$1[chars.charCodeAt(i$1)] = i$1;
-  }
-  var decode$1 = function decode(base64) {
-    var bufferLength = base64.length * 0.75,
-      len = base64.length,
-      i,
-      p = 0,
-      encoded1,
-      encoded2,
-      encoded3,
-      encoded4;
-    if (base64[base64.length - 1] === '=') {
-      bufferLength--;
-      if (base64[base64.length - 2] === '=') {
-        bufferLength--;
-      }
-    }
-    var arraybuffer = new ArrayBuffer(bufferLength),
-      bytes = new Uint8Array(arraybuffer);
-    for (i = 0; i < len; i += 4) {
-      encoded1 = lookup$1[base64.charCodeAt(i)];
-      encoded2 = lookup$1[base64.charCodeAt(i + 1)];
-      encoded3 = lookup$1[base64.charCodeAt(i + 2)];
-      encoded4 = lookup$1[base64.charCodeAt(i + 3)];
-      bytes[p++] = encoded1 << 2 | encoded2 >> 4;
-      bytes[p++] = (encoded2 & 15) << 4 | encoded3 >> 2;
-      bytes[p++] = (encoded3 & 3) << 6 | encoded4 & 63;
-    }
-    return arraybuffer;
-  };
-
-  var withNativeArrayBuffer$1 = typeof ArrayBuffer === "function";
-  var decodePacket = function decodePacket(encodedPacket, binaryType) {
-    if (typeof encodedPacket !== "string") {
-      return {
-        type: "message",
-        data: mapBinary(encodedPacket, binaryType)
-      };
-    }
-    var type = encodedPacket.charAt(0);
-    if (type === "b") {
-      return {
-        type: "message",
-        data: decodeBase64Packet(encodedPacket.substring(1), binaryType)
-      };
-    }
-    var packetType = PACKET_TYPES_REVERSE[type];
-    if (!packetType) {
-      return ERROR_PACKET;
-    }
-    return encodedPacket.length > 1 ? {
-      type: PACKET_TYPES_REVERSE[type],
-      data: encodedPacket.substring(1)
-    } : {
-      type: PACKET_TYPES_REVERSE[type]
-    };
-  };
-  var decodeBase64Packet = function decodeBase64Packet(data, binaryType) {
-    if (withNativeArrayBuffer$1) {
-      var decoded = decode$1(data);
-      return mapBinary(decoded, binaryType);
-    } else {
-      return {
-        base64: true,
-        data: data
-      }; // fallback for old browsers
-    }
-  };
-
-  var mapBinary = function mapBinary(data, binaryType) {
-    switch (binaryType) {
-      case "blob":
-        if (data instanceof Blob) {
-          // from WebSocket + binaryType "blob"
-          return data;
-        } else {
-          // from HTTP long-polling or WebTransport
-          return new Blob([data]);
-        }
-      case "arraybuffer":
-      default:
-        if (data instanceof ArrayBuffer) {
-          // from HTTP long-polling (base64) or WebSocket + binaryType "arraybuffer"
-          return data;
-        } else {
-          // from WebTransport (Uint8Array)
-          return data.buffer;
-        }
-    }
-  };
-
-  var SEPARATOR = String.fromCharCode(30); // see https://en.wikipedia.org/wiki/Delimiter#ASCII_delimited_text
-  var encodePayload = function encodePayload(packets, callback) {
-    // some packets may be added to the array while encoding, so the initial length must be saved
-    var length = packets.length;
-    var encodedPackets = new Array(length);
-    var count = 0;
-    packets.forEach(function (packet, i) {
-      // force base64 encoding for binary packets
-      encodePacket(packet, false, function (encodedPacket) {
-        encodedPackets[i] = encodedPacket;
-        if (++count === length) {
-          callback(encodedPackets.join(SEPARATOR));
-        }
-      });
-    });
-  };
-  var decodePayload = function decodePayload(encodedPayload, binaryType) {
-    var encodedPackets = encodedPayload.split(SEPARATOR);
-    var packets = [];
-    for (var i = 0; i < encodedPackets.length; i++) {
-      var decodedPacket = decodePacket(encodedPackets[i], binaryType);
-      packets.push(decodedPacket);
-      if (decodedPacket.type === "error") {
-        break;
-      }
-    }
-    return packets;
-  };
-  var TEXT_DECODER;
-  function decodePacketFromBinary(data, isBinary, binaryType) {
-    if (!TEXT_DECODER) {
-      // lazily created for compatibility with old browser platforms
-      TEXT_DECODER = new TextDecoder();
-    }
-    // 48 === "0".charCodeAt(0) (OPEN packet type)
-    // 54 === "6".charCodeAt(0) (NOOP packet type)
-    var isPlainBinary = isBinary || data[0] < 48 || data[0] > 54;
-    return decodePacket(isPlainBinary ? data : TEXT_DECODER.decode(data), binaryType);
-  }
-  var protocol$1 = 4;
-
-  /**
-   * Initialize a new `Emitter`.
-   *
-   * @api public
-   */
-
-  function Emitter(obj) {
-    if (obj) return mixin(obj);
-  }
-
-  /**
-   * Mixin the emitter properties.
-   *
-   * @param {Object} obj
-   * @return {Object}
-   * @api private
-   */
-
-  function mixin(obj) {
-    for (var key in Emitter.prototype) {
-      obj[key] = Emitter.prototype[key];
-    }
-    return obj;
-  }
-
-  /**
-   * Listen on the given `event` with `fn`.
-   *
-   * @param {String} event
-   * @param {Function} fn
-   * @return {Emitter}
-   * @api public
-   */
-
-  Emitter.prototype.on = Emitter.prototype.addEventListener = function (event, fn) {
-    this._callbacks = this._callbacks || {};
-    (this._callbacks['$' + event] = this._callbacks['$' + event] || []).push(fn);
-    return this;
-  };
-
-  /**
-   * Adds an `event` listener that will be invoked a single
-   * time then automatically removed.
-   *
-   * @param {String} event
-   * @param {Function} fn
-   * @return {Emitter}
-   * @api public
-   */
-
-  Emitter.prototype.once = function (event, fn) {
-    function on() {
-      this.off(event, on);
-      fn.apply(this, arguments);
-    }
-    on.fn = fn;
-    this.on(event, on);
-    return this;
-  };
-
-  /**
-   * Remove the given callback for `event` or all
-   * registered callbacks.
-   *
-   * @param {String} event
-   * @param {Function} fn
-   * @return {Emitter}
-   * @api public
-   */
-
-  Emitter.prototype.off = Emitter.prototype.removeListener = Emitter.prototype.removeAllListeners = Emitter.prototype.removeEventListener = function (event, fn) {
-    this._callbacks = this._callbacks || {};
-
-    // all
-    if (0 == arguments.length) {
-      this._callbacks = {};
-      return this;
-    }
-
-    // specific event
-    var callbacks = this._callbacks['$' + event];
-    if (!callbacks) return this;
-
-    // remove all handlers
-    if (1 == arguments.length) {
-      delete this._callbacks['$' + event];
-      return this;
-    }
-
-    // remove specific handler
-    var cb;
-    for (var i = 0; i < callbacks.length; i++) {
-      cb = callbacks[i];
-      if (cb === fn || cb.fn === fn) {
-        callbacks.splice(i, 1);
-        break;
-      }
-    }
-
-    // Remove event specific arrays for event types that no
-    // one is subscribed for to avoid memory leak.
-    if (callbacks.length === 0) {
-      delete this._callbacks['$' + event];
-    }
-    return this;
-  };
-
-  /**
-   * Emit `event` with the given args.
-   *
-   * @param {String} event
-   * @param {Mixed} ...
-   * @return {Emitter}
-   */
-
-  Emitter.prototype.emit = function (event) {
-    this._callbacks = this._callbacks || {};
-    var args = new Array(arguments.length - 1),
-      callbacks = this._callbacks['$' + event];
-    for (var i = 1; i < arguments.length; i++) {
-      args[i - 1] = arguments[i];
-    }
-    if (callbacks) {
-      callbacks = callbacks.slice(0);
-      for (var i = 0, len = callbacks.length; i < len; ++i) {
-        callbacks[i].apply(this, args);
-      }
-    }
-    return this;
-  };
-
-  // alias used for reserved events (protected method)
-  Emitter.prototype.emitReserved = Emitter.prototype.emit;
-
-  /**
-   * Return array of callbacks for `event`.
-   *
-   * @param {String} event
-   * @return {Array}
-   * @api public
-   */
-
-  Emitter.prototype.listeners = function (event) {
-    this._callbacks = this._callbacks || {};
-    return this._callbacks['$' + event] || [];
-  };
-
-  /**
-   * Check if this emitter has `event` handlers.
-   *
-   * @param {String} event
-   * @return {Boolean}
-   * @api public
-   */
-
-  Emitter.prototype.hasListeners = function (event) {
-    return !!this.listeners(event).length;
-  };
-
-  var globalThisShim = function () {
-    if (typeof self !== "undefined") {
-      return self;
-    } else if (typeof window !== "undefined") {
-      return window;
-    } else {
-      return Function("return this")();
-    }
-  }();
-
-  function pick(obj) {
-    for (var _len = arguments.length, attr = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
-      attr[_key - 1] = arguments[_key];
-    }
-    return attr.reduce(function (acc, k) {
-      if (obj.hasOwnProperty(k)) {
-        acc[k] = obj[k];
-      }
-      return acc;
-    }, {});
-  }
-  // Keep a reference to the real timeout functions so they can be used when overridden
-  var NATIVE_SET_TIMEOUT = globalThisShim.setTimeout;
-  var NATIVE_CLEAR_TIMEOUT = globalThisShim.clearTimeout;
-  function installTimerFunctions(obj, opts) {
-    if (opts.useNativeTimers) {
-      obj.setTimeoutFn = NATIVE_SET_TIMEOUT.bind(globalThisShim);
-      obj.clearTimeoutFn = NATIVE_CLEAR_TIMEOUT.bind(globalThisShim);
-    } else {
-      obj.setTimeoutFn = globalThisShim.setTimeout.bind(globalThisShim);
-      obj.clearTimeoutFn = globalThisShim.clearTimeout.bind(globalThisShim);
-    }
-  }
-  // base64 encoded buffers are about 33% bigger (https://en.wikipedia.org/wiki/Base64)
-  var BASE64_OVERHEAD = 1.33;
-  // we could also have used `new Blob([obj]).size`, but it isn't supported in IE9
-  function byteLength(obj) {
-    if (typeof obj === "string") {
-      return utf8Length(obj);
-    }
-    // arraybuffer or blob
-    return Math.ceil((obj.byteLength || obj.size) * BASE64_OVERHEAD);
-  }
-  function utf8Length(str) {
-    var c = 0,
-      length = 0;
-    for (var i = 0, l = str.length; i < l; i++) {
-      c = str.charCodeAt(i);
-      if (c < 0x80) {
-        length += 1;
-      } else if (c < 0x800) {
-        length += 2;
-      } else if (c < 0xd800 || c >= 0xe000) {
-        length += 3;
-      } else {
-        i++;
-        length += 4;
-      }
-    }
-    return length;
-  }
-
-  // imported from https://github.com/galkn/querystring
-  /**
-   * Compiles a querystring
-   * Returns string representation of the object
-   *
-   * @param {Object}
-   * @api private
-   */
-  function encode$1(obj) {
-    var str = '';
-    for (var i in obj) {
-      if (obj.hasOwnProperty(i)) {
-        if (str.length) str += '&';
-        str += encodeURIComponent(i) + '=' + encodeURIComponent(obj[i]);
-      }
-    }
-    return str;
-  }
-  /**
-   * Parses a simple querystring into an object
-   *
-   * @param {String} qs
-   * @api private
-   */
-  function decode(qs) {
-    var qry = {};
-    var pairs = qs.split('&');
-    for (var i = 0, l = pairs.length; i < l; i++) {
-      var pair = pairs[i].split('=');
-      qry[decodeURIComponent(pair[0])] = decodeURIComponent(pair[1]);
-    }
-    return qry;
-  }
-
-  var TransportError = /*#__PURE__*/function (_Error) {
-    _inherits(TransportError, _Error);
-    var _super = _createSuper(TransportError);
-    function TransportError(reason, description, context) {
-      var _this;
-      _classCallCheck(this, TransportError);
-      _this = _super.call(this, reason);
-      _this.description = description;
-      _this.context = context;
-      _this.type = "TransportError";
-      return _this;
-    }
-    return _createClass(TransportError);
-  }( /*#__PURE__*/_wrapNativeSuper(Error));
-  var Transport = /*#__PURE__*/function (_Emitter) {
-    _inherits(Transport, _Emitter);
-    var _super2 = _createSuper(Transport);
-    /**
-     * Transport abstract constructor.
-     *
-     * @param {Object} opts - options
-     * @protected
-     */
-    function Transport(opts) {
-      var _this2;
-      _classCallCheck(this, Transport);
-      _this2 = _super2.call(this);
-      _this2.writable = false;
-      installTimerFunctions(_assertThisInitialized(_this2), opts);
-      _this2.opts = opts;
-      _this2.query = opts.query;
-      _this2.socket = opts.socket;
-      return _this2;
-    }
-    /**
-     * Emits an error.
-     *
-     * @param {String} reason
-     * @param description
-     * @param context - the error context
-     * @return {Transport} for chaining
-     * @protected
-     */
-    _createClass(Transport, [{
-      key: "onError",
-      value: function onError(reason, description, context) {
-        _get(_getPrototypeOf(Transport.prototype), "emitReserved", this).call(this, "error", new TransportError(reason, description, context));
-        return this;
-      }
-      /**
-       * Opens the transport.
-       */
-    }, {
-      key: "open",
-      value: function open() {
-        this.readyState = "opening";
-        this.doOpen();
-        return this;
-      }
-      /**
-       * Closes the transport.
-       */
-    }, {
-      key: "close",
-      value: function close() {
-        if (this.readyState === "opening" || this.readyState === "open") {
-          this.doClose();
-          this.onClose();
-        }
-        return this;
-      }
-      /**
-       * Sends multiple packets.
-       *
-       * @param {Array} packets
-       */
-    }, {
-      key: "send",
-      value: function send(packets) {
-        if (this.readyState === "open") {
-          this.write(packets);
-        }
-      }
-      /**
-       * Called upon open
-       *
-       * @protected
-       */
-    }, {
-      key: "onOpen",
-      value: function onOpen() {
-        this.readyState = "open";
-        this.writable = true;
-        _get(_getPrototypeOf(Transport.prototype), "emitReserved", this).call(this, "open");
-      }
-      /**
-       * Called with data.
-       *
-       * @param {String} data
-       * @protected
-       */
-    }, {
-      key: "onData",
-      value: function onData(data) {
-        var packet = decodePacket(data, this.socket.binaryType);
-        this.onPacket(packet);
-      }
-      /**
-       * Called with a decoded packet.
-       *
-       * @protected
-       */
-    }, {
-      key: "onPacket",
-      value: function onPacket(packet) {
-        _get(_getPrototypeOf(Transport.prototype), "emitReserved", this).call(this, "packet", packet);
-      }
-      /**
-       * Called upon close.
-       *
-       * @protected
-       */
-    }, {
-      key: "onClose",
-      value: function onClose(details) {
-        this.readyState = "closed";
-        _get(_getPrototypeOf(Transport.prototype), "emitReserved", this).call(this, "close", details);
-      }
-      /**
-       * Pauses the transport, in order not to lose packets during an upgrade.
-       *
-       * @param onPause
-       */
-    }, {
-      key: "pause",
-      value: function pause(onPause) {}
-    }, {
-      key: "createUri",
-      value: function createUri(schema) {
-        var query = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
-        return schema + "://" + this._hostname() + this._port() + this.opts.path + this._query(query);
-      }
-    }, {
-      key: "_hostname",
-      value: function _hostname() {
-        var hostname = this.opts.hostname;
-        return hostname.indexOf(":") === -1 ? hostname : "[" + hostname + "]";
-      }
-    }, {
-      key: "_port",
-      value: function _port() {
-        if (this.opts.port && (this.opts.secure && Number(this.opts.port !== 443) || !this.opts.secure && Number(this.opts.port) !== 80)) {
-          return ":" + this.opts.port;
-        } else {
-          return "";
-        }
-      }
-    }, {
-      key: "_query",
-      value: function _query(query) {
-        var encodedQuery = encode$1(query);
-        return encodedQuery.length ? "?" + encodedQuery : "";
-      }
-    }]);
-    return Transport;
-  }(Emitter);
-
-  // imported from https://github.com/unshiftio/yeast
-
-  var alphabet = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-_'.split(''),
-    length = 64,
-    map = {};
-  var seed = 0,
-    i = 0,
-    prev;
-  /**
-   * Return a string representing the specified number.
-   *
-   * @param {Number} num The number to convert.
-   * @returns {String} The string representation of the number.
-   * @api public
-   */
-  function encode(num) {
-    var encoded = '';
-    do {
-      encoded = alphabet[num % length] + encoded;
-      num = Math.floor(num / length);
-    } while (num > 0);
-    return encoded;
-  }
-  /**
-   * Yeast: A tiny growing id generator.
-   *
-   * @returns {String} A unique id.
-   * @api public
-   */
-  function yeast() {
-    var now = encode(+new Date());
-    if (now !== prev) return seed = 0, prev = now;
-    return now + '.' + encode(seed++);
-  }
-  //
-  // Map each character to its index.
-  //
-  for (; i < length; i++) map[alphabet[i]] = i;
-
-  // imported from https://github.com/component/has-cors
-  var value = false;
-  try {
-    value = typeof XMLHttpRequest !== 'undefined' && 'withCredentials' in new XMLHttpRequest();
-  } catch (err) {
-    // if XMLHttp support is disabled in IE then it will throw
-    // when trying to create
-  }
-  var hasCORS = value;
-
-  // browser shim for xmlhttprequest module
-  function XHR(opts) {
-    var xdomain = opts.xdomain;
-    // XMLHttpRequest can be disabled on IE
-    try {
-      if ("undefined" !== typeof XMLHttpRequest && (!xdomain || hasCORS)) {
-        return new XMLHttpRequest();
-      }
-    } catch (e) {}
-    if (!xdomain) {
-      try {
-        return new globalThisShim[["Active"].concat("Object").join("X")]("Microsoft.XMLHTTP");
-      } catch (e) {}
-    }
-  }
-  function createCookieJar() {}
-
-  function empty() {}
-  var hasXHR2 = function () {
-    var xhr = new XHR({
-      xdomain: false
-    });
-    return null != xhr.responseType;
-  }();
-  var Polling = /*#__PURE__*/function (_Transport) {
-    _inherits(Polling, _Transport);
-    var _super = _createSuper(Polling);
-    /**
-     * XHR Polling constructor.
-     *
-     * @param {Object} opts
-     * @package
-     */
-    function Polling(opts) {
-      var _this;
-      _classCallCheck(this, Polling);
-      _this = _super.call(this, opts);
-      _this.polling = false;
-      if (typeof location !== "undefined") {
-        var isSSL = "https:" === location.protocol;
-        var port = location.port;
-        // some user agents have empty `location.port`
-        if (!port) {
-          port = isSSL ? "443" : "80";
-        }
-        _this.xd = typeof location !== "undefined" && opts.hostname !== location.hostname || port !== opts.port;
-      }
-      /**
-       * XHR supports binary
-       */
-      var forceBase64 = opts && opts.forceBase64;
-      _this.supportsBinary = hasXHR2 && !forceBase64;
-      if (_this.opts.withCredentials) {
-        _this.cookieJar = createCookieJar();
-      }
-      return _this;
-    }
-    _createClass(Polling, [{
-      key: "name",
-      get: function get() {
-        return "polling";
-      }
-      /**
-       * Opens the socket (triggers polling). We write a PING message to determine
-       * when the transport is open.
-       *
-       * @protected
-       */
-    }, {
-      key: "doOpen",
-      value: function doOpen() {
-        this.poll();
-      }
-      /**
-       * Pauses polling.
-       *
-       * @param {Function} onPause - callback upon buffers are flushed and transport is paused
-       * @package
-       */
-    }, {
-      key: "pause",
-      value: function pause(onPause) {
-        var _this2 = this;
-        this.readyState = "pausing";
-        var pause = function pause() {
-          _this2.readyState = "paused";
-          onPause();
-        };
-        if (this.polling || !this.writable) {
-          var total = 0;
-          if (this.polling) {
-            total++;
-            this.once("pollComplete", function () {
-              --total || pause();
-            });
-          }
-          if (!this.writable) {
-            total++;
-            this.once("drain", function () {
-              --total || pause();
-            });
-          }
-        } else {
-          pause();
-        }
-      }
-      /**
-       * Starts polling cycle.
-       *
-       * @private
-       */
-    }, {
-      key: "poll",
-      value: function poll() {
-        this.polling = true;
-        this.doPoll();
-        this.emitReserved("poll");
-      }
-      /**
-       * Overloads onData to detect payloads.
-       *
-       * @protected
-       */
-    }, {
-      key: "onData",
-      value: function onData(data) {
-        var _this3 = this;
-        var callback = function callback(packet) {
-          // if its the first message we consider the transport open
-          if ("opening" === _this3.readyState && packet.type === "open") {
-            _this3.onOpen();
-          }
-          // if its a close packet, we close the ongoing requests
-          if ("close" === packet.type) {
-            _this3.onClose({
-              description: "transport closed by the server"
-            });
-            return false;
-          }
-          // otherwise bypass onData and handle the message
-          _this3.onPacket(packet);
-        };
-        // decode payload
-        decodePayload(data, this.socket.binaryType).forEach(callback);
-        // if an event did not trigger closing
-        if ("closed" !== this.readyState) {
-          // if we got data we're not polling
-          this.polling = false;
-          this.emitReserved("pollComplete");
-          if ("open" === this.readyState) {
-            this.poll();
-          }
-        }
-      }
-      /**
-       * For polling, send a close packet.
-       *
-       * @protected
-       */
-    }, {
-      key: "doClose",
-      value: function doClose() {
-        var _this4 = this;
-        var close = function close() {
-          _this4.write([{
-            type: "close"
-          }]);
-        };
-        if ("open" === this.readyState) {
-          close();
-        } else {
-          // in case we're trying to close while
-          // handshaking is in progress (GH-164)
-          this.once("open", close);
-        }
-      }
-      /**
-       * Writes a packets payload.
-       *
-       * @param {Array} packets - data packets
-       * @protected
-       */
-    }, {
-      key: "write",
-      value: function write(packets) {
-        var _this5 = this;
-        this.writable = false;
-        encodePayload(packets, function (data) {
-          _this5.doWrite(data, function () {
-            _this5.writable = true;
-            _this5.emitReserved("drain");
-          });
-        });
-      }
-      /**
-       * Generates uri for connection.
-       *
-       * @private
-       */
-    }, {
-      key: "uri",
-      value: function uri() {
-        var schema = this.opts.secure ? "https" : "http";
-        var query = this.query || {};
-        // cache busting is forced
-        if (false !== this.opts.timestampRequests) {
-          query[this.opts.timestampParam] = yeast();
-        }
-        if (!this.supportsBinary && !query.sid) {
-          query.b64 = 1;
-        }
-        return this.createUri(schema, query);
-      }
-      /**
-       * Creates a request.
-       *
-       * @param {String} method
-       * @private
-       */
-    }, {
-      key: "request",
-      value: function request() {
-        var opts = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
-        _extends(opts, {
-          xd: this.xd,
-          cookieJar: this.cookieJar
-        }, this.opts);
-        return new Request(this.uri(), opts);
-      }
-      /**
-       * Sends data.
-       *
-       * @param {String} data to send.
-       * @param {Function} called upon flush.
-       * @private
-       */
-    }, {
-      key: "doWrite",
-      value: function doWrite(data, fn) {
-        var _this6 = this;
-        var req = this.request({
-          method: "POST",
-          data: data
-        });
-        req.on("success", fn);
-        req.on("error", function (xhrStatus, context) {
-          _this6.onError("xhr post error", xhrStatus, context);
-        });
-      }
-      /**
-       * Starts a poll cycle.
-       *
-       * @private
-       */
-    }, {
-      key: "doPoll",
-      value: function doPoll() {
-        var _this7 = this;
-        var req = this.request();
-        req.on("data", this.onData.bind(this));
-        req.on("error", function (xhrStatus, context) {
-          _this7.onError("xhr poll error", xhrStatus, context);
-        });
-        this.pollXhr = req;
-      }
-    }]);
-    return Polling;
-  }(Transport);
-  var Request = /*#__PURE__*/function (_Emitter) {
-    _inherits(Request, _Emitter);
-    var _super2 = _createSuper(Request);
-    /**
-     * Request constructor
-     *
-     * @param {Object} options
-     * @package
-     */
-    function Request(uri, opts) {
-      var _this8;
-      _classCallCheck(this, Request);
-      _this8 = _super2.call(this);
-      installTimerFunctions(_assertThisInitialized(_this8), opts);
-      _this8.opts = opts;
-      _this8.method = opts.method || "GET";
-      _this8.uri = uri;
-      _this8.data = undefined !== opts.data ? opts.data : null;
-      _this8.create();
-      return _this8;
-    }
-    /**
-     * Creates the XHR object and sends the request.
-     *
-     * @private
-     */
-    _createClass(Request, [{
-      key: "create",
-      value: function create() {
-        var _this9 = this;
-        var _a;
-        var opts = pick(this.opts, "agent", "pfx", "key", "passphrase", "cert", "ca", "ciphers", "rejectUnauthorized", "autoUnref");
-        opts.xdomain = !!this.opts.xd;
-        var xhr = this.xhr = new XHR(opts);
-        try {
-          xhr.open(this.method, this.uri, true);
-          try {
-            if (this.opts.extraHeaders) {
-              xhr.setDisableHeaderCheck && xhr.setDisableHeaderCheck(true);
-              for (var i in this.opts.extraHeaders) {
-                if (this.opts.extraHeaders.hasOwnProperty(i)) {
-                  xhr.setRequestHeader(i, this.opts.extraHeaders[i]);
-                }
-              }
-            }
-          } catch (e) {}
-          if ("POST" === this.method) {
-            try {
-              xhr.setRequestHeader("Content-type", "text/plain;charset=UTF-8");
-            } catch (e) {}
-          }
-          try {
-            xhr.setRequestHeader("Accept", "*/*");
-          } catch (e) {}
-          (_a = this.opts.cookieJar) === null || _a === void 0 ? void 0 : _a.addCookies(xhr);
-          // ie6 check
-          if ("withCredentials" in xhr) {
-            xhr.withCredentials = this.opts.withCredentials;
-          }
-          if (this.opts.requestTimeout) {
-            xhr.timeout = this.opts.requestTimeout;
-          }
-          xhr.onreadystatechange = function () {
-            var _a;
-            if (xhr.readyState === 3) {
-              (_a = _this9.opts.cookieJar) === null || _a === void 0 ? void 0 : _a.parseCookies(xhr);
-            }
-            if (4 !== xhr.readyState) return;
-            if (200 === xhr.status || 1223 === xhr.status) {
-              _this9.onLoad();
-            } else {
-              // make sure the `error` event handler that's user-set
-              // does not throw in the same tick and gets caught here
-              _this9.setTimeoutFn(function () {
-                _this9.onError(typeof xhr.status === "number" ? xhr.status : 0);
-              }, 0);
-            }
-          };
-          xhr.send(this.data);
-        } catch (e) {
-          // Need to defer since .create() is called directly from the constructor
-          // and thus the 'error' event can only be only bound *after* this exception
-          // occurs.  Therefore, also, we cannot throw here at all.
-          this.setTimeoutFn(function () {
-            _this9.onError(e);
-          }, 0);
-          return;
-        }
-        if (typeof document !== "undefined") {
-          this.index = Request.requestsCount++;
-          Request.requests[this.index] = this;
-        }
-      }
-      /**
-       * Called upon error.
-       *
-       * @private
-       */
-    }, {
-      key: "onError",
-      value: function onError(err) {
-        this.emitReserved("error", err, this.xhr);
-        this.cleanup(true);
-      }
-      /**
-       * Cleans up house.
-       *
-       * @private
-       */
-    }, {
-      key: "cleanup",
-      value: function cleanup(fromError) {
-        if ("undefined" === typeof this.xhr || null === this.xhr) {
-          return;
-        }
-        this.xhr.onreadystatechange = empty;
-        if (fromError) {
-          try {
-            this.xhr.abort();
-          } catch (e) {}
-        }
-        if (typeof document !== "undefined") {
-          delete Request.requests[this.index];
-        }
-        this.xhr = null;
-      }
-      /**
-       * Called upon load.
-       *
-       * @private
-       */
-    }, {
-      key: "onLoad",
-      value: function onLoad() {
-        var data = this.xhr.responseText;
-        if (data !== null) {
-          this.emitReserved("data", data);
-          this.emitReserved("success");
-          this.cleanup();
-        }
-      }
-      /**
-       * Aborts the request.
-       *
-       * @package
-       */
-    }, {
-      key: "abort",
-      value: function abort() {
-        this.cleanup();
-      }
-    }]);
-    return Request;
-  }(Emitter);
-  Request.requestsCount = 0;
-  Request.requests = {};
-  /**
-   * Aborts pending requests when unloading the window. This is needed to prevent
-   * memory leaks (e.g. when using IE) and to ensure that no spurious error is
-   * emitted.
-   */
-  if (typeof document !== "undefined") {
-    // @ts-ignore
-    if (typeof attachEvent === "function") {
-      // @ts-ignore
-      attachEvent("onunload", unloadHandler);
-    } else if (typeof addEventListener === "function") {
-      var terminationEvent = "onpagehide" in globalThisShim ? "pagehide" : "unload";
-      addEventListener(terminationEvent, unloadHandler, false);
-    }
-  }
-  function unloadHandler() {
-    for (var i in Request.requests) {
-      if (Request.requests.hasOwnProperty(i)) {
-        Request.requests[i].abort();
-      }
-    }
-  }
-
-  var nextTick = function () {
-    var isPromiseAvailable = typeof Promise === "function" && typeof Promise.resolve === "function";
-    if (isPromiseAvailable) {
-      return function (cb) {
-        return Promise.resolve().then(cb);
-      };
-    } else {
-      return function (cb, setTimeoutFn) {
-        return setTimeoutFn(cb, 0);
-      };
-    }
-  }();
-  var WebSocket = globalThisShim.WebSocket || globalThisShim.MozWebSocket;
-  var usingBrowserWebSocket = true;
-  var defaultBinaryType = "arraybuffer";
-
-  // detect ReactNative environment
-  var isReactNative = typeof navigator !== "undefined" && typeof navigator.product === "string" && navigator.product.toLowerCase() === "reactnative";
-  var WS = /*#__PURE__*/function (_Transport) {
-    _inherits(WS, _Transport);
-    var _super = _createSuper(WS);
-    /**
-     * WebSocket transport constructor.
-     *
-     * @param {Object} opts - connection options
-     * @protected
-     */
-    function WS(opts) {
-      var _this;
-      _classCallCheck(this, WS);
-      _this = _super.call(this, opts);
-      _this.supportsBinary = !opts.forceBase64;
-      return _this;
-    }
-    _createClass(WS, [{
-      key: "name",
-      get: function get() {
-        return "websocket";
-      }
-    }, {
-      key: "doOpen",
-      value: function doOpen() {
-        if (!this.check()) {
-          // let probe timeout
-          return;
-        }
-        var uri = this.uri();
-        var protocols = this.opts.protocols;
-        // React Native only supports the 'headers' option, and will print a warning if anything else is passed
-        var opts = isReactNative ? {} : pick(this.opts, "agent", "perMessageDeflate", "pfx", "key", "passphrase", "cert", "ca", "ciphers", "rejectUnauthorized", "localAddress", "protocolVersion", "origin", "maxPayload", "family", "checkServerIdentity");
-        if (this.opts.extraHeaders) {
-          opts.headers = this.opts.extraHeaders;
-        }
-        try {
-          this.ws = usingBrowserWebSocket && !isReactNative ? protocols ? new WebSocket(uri, protocols) : new WebSocket(uri) : new WebSocket(uri, protocols, opts);
-        } catch (err) {
-          return this.emitReserved("error", err);
-        }
-        this.ws.binaryType = this.socket.binaryType || defaultBinaryType;
-        this.addEventListeners();
-      }
-      /**
-       * Adds event listeners to the socket
-       *
-       * @private
-       */
-    }, {
-      key: "addEventListeners",
-      value: function addEventListeners() {
-        var _this2 = this;
-        this.ws.onopen = function () {
-          if (_this2.opts.autoUnref) {
-            _this2.ws._socket.unref();
-          }
-          _this2.onOpen();
-        };
-        this.ws.onclose = function (closeEvent) {
-          return _this2.onClose({
-            description: "websocket connection closed",
-            context: closeEvent
-          });
-        };
-        this.ws.onmessage = function (ev) {
-          return _this2.onData(ev.data);
-        };
-        this.ws.onerror = function (e) {
-          return _this2.onError("websocket error", e);
-        };
-      }
-    }, {
-      key: "write",
-      value: function write(packets) {
-        var _this3 = this;
-        this.writable = false;
-        // encodePacket efficient as it uses WS framing
-        // no need for encodePayload
-        var _loop = function _loop() {
-          var packet = packets[i];
-          var lastPacket = i === packets.length - 1;
-          encodePacket(packet, _this3.supportsBinary, function (data) {
-            // always create a new object (GH-437)
-            var opts = {};
-            // Sometimes the websocket has already been closed but the browser didn't
-            // have a chance of informing us about it yet, in that case send will
-            // throw an error
-            try {
-              if (usingBrowserWebSocket) {
-                // TypeError is thrown when passing the second argument on Safari
-                _this3.ws.send(data);
-              }
-            } catch (e) {}
-            if (lastPacket) {
-              // fake drain
-              // defer to next tick to allow Socket to clear writeBuffer
-              nextTick(function () {
-                _this3.writable = true;
-                _this3.emitReserved("drain");
-              }, _this3.setTimeoutFn);
-            }
-          });
-        };
-        for (var i = 0; i < packets.length; i++) {
-          _loop();
-        }
-      }
-    }, {
-      key: "doClose",
-      value: function doClose() {
-        if (typeof this.ws !== "undefined") {
-          this.ws.close();
-          this.ws = null;
-        }
-      }
-      /**
-       * Generates uri for connection.
-       *
-       * @private
-       */
-    }, {
-      key: "uri",
-      value: function uri() {
-        var schema = this.opts.secure ? "wss" : "ws";
-        var query = this.query || {};
-        // append timestamp to URI
-        if (this.opts.timestampRequests) {
-          query[this.opts.timestampParam] = yeast();
-        }
-        // communicate binary support capabilities
-        if (!this.supportsBinary) {
-          query.b64 = 1;
-        }
-        return this.createUri(schema, query);
-      }
-      /**
-       * Feature detection for WebSocket.
-       *
-       * @return {Boolean} whether this transport is available.
-       * @private
-       */
-    }, {
-      key: "check",
-      value: function check() {
-        return !!WebSocket;
-      }
-    }]);
-    return WS;
-  }(Transport);
-
-  function shouldIncludeBinaryHeader(packet, encoded) {
-    // 48 === "0".charCodeAt(0) (OPEN packet type)
-    // 54 === "6".charCodeAt(0) (NOOP packet type)
-    return packet.type === "message" && typeof packet.data !== "string" && encoded[0] >= 48 && encoded[0] <= 54;
-  }
-  var WT = /*#__PURE__*/function (_Transport) {
-    _inherits(WT, _Transport);
-    var _super = _createSuper(WT);
-    function WT() {
-      _classCallCheck(this, WT);
-      return _super.apply(this, arguments);
-    }
-    _createClass(WT, [{
-      key: "name",
-      get: function get() {
-        return "webtransport";
-      }
-    }, {
-      key: "doOpen",
-      value: function doOpen() {
-        var _this = this;
-        // @ts-ignore
-        if (typeof WebTransport !== "function") {
-          return;
-        }
-        // @ts-ignore
-        this.transport = new WebTransport(this.createUri("https"), this.opts.transportOptions[this.name]);
-        this.transport.closed.then(function () {
-          _this.onClose();
-        })["catch"](function (err) {
-          _this.onError("webtransport error", err);
-        });
-        // note: we could have used async/await, but that would require some additional polyfills
-        this.transport.ready.then(function () {
-          _this.transport.createBidirectionalStream().then(function (stream) {
-            var reader = stream.readable.getReader();
-            _this.writer = stream.writable.getWriter();
-            var binaryFlag;
-            var read = function read() {
-              reader.read().then(function (_ref) {
-                var done = _ref.done,
-                  value = _ref.value;
-                if (done) {
-                  return;
-                }
-                if (!binaryFlag && value.byteLength === 1 && value[0] === 54) {
-                  binaryFlag = true;
-                } else {
-                  // TODO expose binarytype
-                  _this.onPacket(decodePacketFromBinary(value, binaryFlag, "arraybuffer"));
-                  binaryFlag = false;
-                }
-                read();
-              })["catch"](function (err) {});
-            };
-            read();
-            var handshake = _this.query.sid ? "0{\"sid\":\"".concat(_this.query.sid, "\"}") : "0";
-            _this.writer.write(new TextEncoder().encode(handshake)).then(function () {
-              return _this.onOpen();
-            });
-          });
-        });
-      }
-    }, {
-      key: "write",
-      value: function write(packets) {
-        var _this2 = this;
-        this.writable = false;
-        var _loop = function _loop() {
-          var packet = packets[i];
-          var lastPacket = i === packets.length - 1;
-          encodePacketToBinary(packet, function (data) {
-            if (shouldIncludeBinaryHeader(packet, data)) {
-              _this2.writer.write(Uint8Array.of(54));
-            }
-            _this2.writer.write(data).then(function () {
-              if (lastPacket) {
-                nextTick(function () {
-                  _this2.writable = true;
-                  _this2.emitReserved("drain");
-                }, _this2.setTimeoutFn);
-              }
-            });
-          });
-        };
-        for (var i = 0; i < packets.length; i++) {
-          _loop();
-        }
-      }
-    }, {
-      key: "doClose",
-      value: function doClose() {
-        var _a;
-        (_a = this.transport) === null || _a === void 0 ? void 0 : _a.close();
-      }
-    }]);
-    return WT;
-  }(Transport);
-
-  var transports = {
-    websocket: WS,
-    webtransport: WT,
-    polling: Polling
-  };
-
-  // imported from https://github.com/galkn/parseuri
-  /**
-   * Parses a URI
-   *
-   * Note: we could also have used the built-in URL object, but it isn't supported on all platforms.
-   *
-   * See:
-   * - https://developer.mozilla.org/en-US/docs/Web/API/URL
-   * - https://caniuse.com/url
-   * - https://www.rfc-editor.org/rfc/rfc3986#appendix-B
-   *
-   * History of the parse() method:
-   * - first commit: https://github.com/socketio/socket.io-client/commit/4ee1d5d94b3906a9c052b459f1a818b15f38f91c
-   * - export into its own module: https://github.com/socketio/engine.io-client/commit/de2c561e4564efeb78f1bdb1ba39ef81b2822cb3
-   * - reimport: https://github.com/socketio/engine.io-client/commit/df32277c3f6d622eec5ed09f493cae3f3391d242
-   *
-   * @author Steven Levithan <stevenlevithan.com> (MIT license)
-   * @api private
-   */
-  var re = /^(?:(?![^:@\/?#]+:[^:@\/]*@)(http|https|ws|wss):\/\/)?((?:(([^:@\/?#]*)(?::([^:@\/?#]*))?)?@)?((?:[a-f0-9]{0,4}:){2,7}[a-f0-9]{0,4}|[^:\/?#]*)(?::(\d*))?)(((\/(?:[^?#](?![^?#\/]*\.[^?#\/.]+(?:[?#]|$)))*\/?)?([^?#\/]*))(?:\?([^#]*))?(?:#(.*))?)/;
-  var parts = ['source', 'protocol', 'authority', 'userInfo', 'user', 'password', 'host', 'port', 'relative', 'path', 'directory', 'file', 'query', 'anchor'];
-  function parse(str) {
-    var src = str,
-      b = str.indexOf('['),
-      e = str.indexOf(']');
-    if (b != -1 && e != -1) {
-      str = str.substring(0, b) + str.substring(b, e).replace(/:/g, ';') + str.substring(e, str.length);
-    }
-    var m = re.exec(str || ''),
-      uri = {},
-      i = 14;
-    while (i--) {
-      uri[parts[i]] = m[i] || '';
-    }
-    if (b != -1 && e != -1) {
-      uri.source = src;
-      uri.host = uri.host.substring(1, uri.host.length - 1).replace(/;/g, ':');
-      uri.authority = uri.authority.replace('[', '').replace(']', '').replace(/;/g, ':');
-      uri.ipv6uri = true;
-    }
-    uri.pathNames = pathNames(uri, uri['path']);
-    uri.queryKey = queryKey(uri, uri['query']);
-    return uri;
-  }
-  function pathNames(obj, path) {
-    var regx = /\/{2,9}/g,
-      names = path.replace(regx, "/").split("/");
-    if (path.slice(0, 1) == '/' || path.length === 0) {
-      names.splice(0, 1);
-    }
-    if (path.slice(-1) == '/') {
-      names.splice(names.length - 1, 1);
-    }
-    return names;
-  }
-  function queryKey(uri, query) {
-    var data = {};
-    query.replace(/(?:^|&)([^&=]*)=?([^&]*)/g, function ($0, $1, $2) {
-      if ($1) {
-        data[$1] = $2;
-      }
-    });
-    return data;
-  }
-
-  var Socket$1 = /*#__PURE__*/function (_Emitter) {
-    _inherits(Socket, _Emitter);
-    var _super = _createSuper(Socket);
-    /**
-     * Socket constructor.
-     *
-     * @param {String|Object} uri - uri or options
-     * @param {Object} opts - options
-     */
-    function Socket(uri) {
-      var _this;
-      var opts = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
-      _classCallCheck(this, Socket);
-      _this = _super.call(this);
-      _this.writeBuffer = [];
-      if (uri && "object" === _typeof(uri)) {
-        opts = uri;
-        uri = null;
-      }
-      if (uri) {
-        uri = parse(uri);
-        opts.hostname = uri.host;
-        opts.secure = uri.protocol === "https" || uri.protocol === "wss";
-        opts.port = uri.port;
-        if (uri.query) opts.query = uri.query;
-      } else if (opts.host) {
-        opts.hostname = parse(opts.host).host;
-      }
-      installTimerFunctions(_assertThisInitialized(_this), opts);
-      _this.secure = null != opts.secure ? opts.secure : typeof location !== "undefined" && "https:" === location.protocol;
-      if (opts.hostname && !opts.port) {
-        // if no port is specified manually, use the protocol default
-        opts.port = _this.secure ? "443" : "80";
-      }
-      _this.hostname = opts.hostname || (typeof location !== "undefined" ? location.hostname : "localhost");
-      _this.port = opts.port || (typeof location !== "undefined" && location.port ? location.port : _this.secure ? "443" : "80");
-      _this.transports = opts.transports || ["polling", "websocket", "webtransport"];
-      _this.writeBuffer = [];
-      _this.prevBufferLen = 0;
-      _this.opts = _extends({
-        path: "/engine.io",
-        agent: false,
-        withCredentials: false,
-        upgrade: true,
-        timestampParam: "t",
-        rememberUpgrade: false,
-        addTrailingSlash: true,
-        rejectUnauthorized: true,
-        perMessageDeflate: {
-          threshold: 1024
-        },
-        transportOptions: {},
-        closeOnBeforeunload: false
-      }, opts);
-      _this.opts.path = _this.opts.path.replace(/\/$/, "") + (_this.opts.addTrailingSlash ? "/" : "");
-      if (typeof _this.opts.query === "string") {
-        _this.opts.query = decode(_this.opts.query);
-      }
-      // set on handshake
-      _this.id = null;
-      _this.upgrades = null;
-      _this.pingInterval = null;
-      _this.pingTimeout = null;
-      // set on heartbeat
-      _this.pingTimeoutTimer = null;
-      if (typeof addEventListener === "function") {
-        if (_this.opts.closeOnBeforeunload) {
-          // Firefox closes the connection when the "beforeunload" event is emitted but not Chrome. This event listener
-          // ensures every browser behaves the same (no "disconnect" event at the Socket.IO level when the page is
-          // closed/reloaded)
-          _this.beforeunloadEventListener = function () {
-            if (_this.transport) {
-              // silently close the transport
-              _this.transport.removeAllListeners();
-              _this.transport.close();
-            }
-          };
-          addEventListener("beforeunload", _this.beforeunloadEventListener, false);
-        }
-        if (_this.hostname !== "localhost") {
-          _this.offlineEventListener = function () {
-            _this.onClose("transport close", {
-              description: "network connection lost"
-            });
-          };
-          addEventListener("offline", _this.offlineEventListener, false);
-        }
-      }
-      _this.open();
-      return _this;
-    }
-    /**
-     * Creates transport of the given type.
-     *
-     * @param {String} name - transport name
-     * @return {Transport}
-     * @private
-     */
-    _createClass(Socket, [{
-      key: "createTransport",
-      value: function createTransport(name) {
-        var query = _extends({}, this.opts.query);
-        // append engine.io protocol identifier
-        query.EIO = protocol$1;
-        // transport name
-        query.transport = name;
-        // session id if we already have one
-        if (this.id) query.sid = this.id;
-        var opts = _extends({}, this.opts, {
-          query: query,
-          socket: this,
-          hostname: this.hostname,
-          secure: this.secure,
-          port: this.port
-        }, this.opts.transportOptions[name]);
-        return new transports[name](opts);
-      }
-      /**
-       * Initializes transport to use and starts probe.
-       *
-       * @private
-       */
-    }, {
-      key: "open",
-      value: function open() {
-        var _this2 = this;
-        var transport;
-        if (this.opts.rememberUpgrade && Socket.priorWebsocketSuccess && this.transports.indexOf("websocket") !== -1) {
-          transport = "websocket";
-        } else if (0 === this.transports.length) {
-          // Emit error on next tick so it can be listened to
-          this.setTimeoutFn(function () {
-            _this2.emitReserved("error", "No transports available");
-          }, 0);
-          return;
-        } else {
-          transport = this.transports[0];
-        }
-        this.readyState = "opening";
-        // Retry with the next transport if the transport is disabled (jsonp: false)
-        try {
-          transport = this.createTransport(transport);
-        } catch (e) {
-          this.transports.shift();
-          this.open();
-          return;
-        }
-        transport.open();
-        this.setTransport(transport);
-      }
-      /**
-       * Sets the current transport. Disables the existing one (if any).
-       *
-       * @private
-       */
-    }, {
-      key: "setTransport",
-      value: function setTransport(transport) {
-        var _this3 = this;
-        if (this.transport) {
-          this.transport.removeAllListeners();
-        }
-        // set up transport
-        this.transport = transport;
-        // set up transport listeners
-        transport.on("drain", this.onDrain.bind(this)).on("packet", this.onPacket.bind(this)).on("error", this.onError.bind(this)).on("close", function (reason) {
-          return _this3.onClose("transport close", reason);
-        });
-      }
-      /**
-       * Probes a transport.
-       *
-       * @param {String} name - transport name
-       * @private
-       */
-    }, {
-      key: "probe",
-      value: function probe(name) {
-        var _this4 = this;
-        var transport = this.createTransport(name);
-        var failed = false;
-        Socket.priorWebsocketSuccess = false;
-        var onTransportOpen = function onTransportOpen() {
-          if (failed) return;
-          transport.send([{
-            type: "ping",
-            data: "probe"
-          }]);
-          transport.once("packet", function (msg) {
-            if (failed) return;
-            if ("pong" === msg.type && "probe" === msg.data) {
-              _this4.upgrading = true;
-              _this4.emitReserved("upgrading", transport);
-              if (!transport) return;
-              Socket.priorWebsocketSuccess = "websocket" === transport.name;
-              _this4.transport.pause(function () {
-                if (failed) return;
-                if ("closed" === _this4.readyState) return;
-                cleanup();
-                _this4.setTransport(transport);
-                transport.send([{
-                  type: "upgrade"
-                }]);
-                _this4.emitReserved("upgrade", transport);
-                transport = null;
-                _this4.upgrading = false;
-                _this4.flush();
-              });
-            } else {
-              var err = new Error("probe error");
-              // @ts-ignore
-              err.transport = transport.name;
-              _this4.emitReserved("upgradeError", err);
-            }
-          });
-        };
-        function freezeTransport() {
-          if (failed) return;
-          // Any callback called by transport should be ignored since now
-          failed = true;
-          cleanup();
-          transport.close();
-          transport = null;
-        }
-        // Handle any error that happens while probing
-        var onerror = function onerror(err) {
-          var error = new Error("probe error: " + err);
-          // @ts-ignore
-          error.transport = transport.name;
-          freezeTransport();
-          _this4.emitReserved("upgradeError", error);
-        };
-        function onTransportClose() {
-          onerror("transport closed");
-        }
-        // When the socket is closed while we're probing
-        function onclose() {
-          onerror("socket closed");
-        }
-        // When the socket is upgraded while we're probing
-        function onupgrade(to) {
-          if (transport && to.name !== transport.name) {
-            freezeTransport();
-          }
-        }
-        // Remove all listeners on the transport and on self
-        var cleanup = function cleanup() {
-          transport.removeListener("open", onTransportOpen);
-          transport.removeListener("error", onerror);
-          transport.removeListener("close", onTransportClose);
-          _this4.off("close", onclose);
-          _this4.off("upgrading", onupgrade);
-        };
-        transport.once("open", onTransportOpen);
-        transport.once("error", onerror);
-        transport.once("close", onTransportClose);
-        this.once("close", onclose);
-        this.once("upgrading", onupgrade);
-        if (this.upgrades.indexOf("webtransport") !== -1 && name !== "webtransport") {
-          // favor WebTransport
-          this.setTimeoutFn(function () {
-            if (!failed) {
-              transport.open();
-            }
-          }, 200);
-        } else {
-          transport.open();
-        }
-      }
-      /**
-       * Called when connection is deemed open.
-       *
-       * @private
-       */
-    }, {
-      key: "onOpen",
-      value: function onOpen() {
-        this.readyState = "open";
-        Socket.priorWebsocketSuccess = "websocket" === this.transport.name;
-        this.emitReserved("open");
-        this.flush();
-        // we check for `readyState` in case an `open`
-        // listener already closed the socket
-        if ("open" === this.readyState && this.opts.upgrade) {
-          var i = 0;
-          var l = this.upgrades.length;
-          for (; i < l; i++) {
-            this.probe(this.upgrades[i]);
-          }
-        }
-      }
-      /**
-       * Handles a packet.
-       *
-       * @private
-       */
-    }, {
-      key: "onPacket",
-      value: function onPacket(packet) {
-        if ("opening" === this.readyState || "open" === this.readyState || "closing" === this.readyState) {
-          this.emitReserved("packet", packet);
-          // Socket is live - any packet counts
-          this.emitReserved("heartbeat");
-          switch (packet.type) {
-            case "open":
-              this.onHandshake(JSON.parse(packet.data));
-              break;
-            case "ping":
-              this.resetPingTimeout();
-              this.sendPacket("pong");
-              this.emitReserved("ping");
-              this.emitReserved("pong");
-              break;
-            case "error":
-              var err = new Error("server error");
-              // @ts-ignore
-              err.code = packet.data;
-              this.onError(err);
-              break;
-            case "message":
-              this.emitReserved("data", packet.data);
-              this.emitReserved("message", packet.data);
-              break;
-          }
-        }
-      }
-      /**
-       * Called upon handshake completion.
-       *
-       * @param {Object} data - handshake obj
-       * @private
-       */
-    }, {
-      key: "onHandshake",
-      value: function onHandshake(data) {
-        this.emitReserved("handshake", data);
-        this.id = data.sid;
-        this.transport.query.sid = data.sid;
-        this.upgrades = this.filterUpgrades(data.upgrades);
-        this.pingInterval = data.pingInterval;
-        this.pingTimeout = data.pingTimeout;
-        this.maxPayload = data.maxPayload;
-        this.onOpen();
-        // In case open handler closes socket
-        if ("closed" === this.readyState) return;
-        this.resetPingTimeout();
-      }
-      /**
-       * Sets and resets ping timeout timer based on server pings.
-       *
-       * @private
-       */
-    }, {
-      key: "resetPingTimeout",
-      value: function resetPingTimeout() {
-        var _this5 = this;
-        this.clearTimeoutFn(this.pingTimeoutTimer);
-        this.pingTimeoutTimer = this.setTimeoutFn(function () {
-          _this5.onClose("ping timeout");
-        }, this.pingInterval + this.pingTimeout);
-        if (this.opts.autoUnref) {
-          this.pingTimeoutTimer.unref();
-        }
-      }
-      /**
-       * Called on `drain` event
-       *
-       * @private
-       */
-    }, {
-      key: "onDrain",
-      value: function onDrain() {
-        this.writeBuffer.splice(0, this.prevBufferLen);
-        // setting prevBufferLen = 0 is very important
-        // for example, when upgrading, upgrade packet is sent over,
-        // and a nonzero prevBufferLen could cause problems on `drain`
-        this.prevBufferLen = 0;
-        if (0 === this.writeBuffer.length) {
-          this.emitReserved("drain");
-        } else {
-          this.flush();
-        }
-      }
-      /**
-       * Flush write buffers.
-       *
-       * @private
-       */
-    }, {
-      key: "flush",
-      value: function flush() {
-        if ("closed" !== this.readyState && this.transport.writable && !this.upgrading && this.writeBuffer.length) {
-          var packets = this.getWritablePackets();
-          this.transport.send(packets);
-          // keep track of current length of writeBuffer
-          // splice writeBuffer and callbackBuffer on `drain`
-          this.prevBufferLen = packets.length;
-          this.emitReserved("flush");
-        }
-      }
-      /**
-       * Ensure the encoded size of the writeBuffer is below the maxPayload value sent by the server (only for HTTP
-       * long-polling)
-       *
-       * @private
-       */
-    }, {
-      key: "getWritablePackets",
-      value: function getWritablePackets() {
-        var shouldCheckPayloadSize = this.maxPayload && this.transport.name === "polling" && this.writeBuffer.length > 1;
-        if (!shouldCheckPayloadSize) {
-          return this.writeBuffer;
-        }
-        var payloadSize = 1; // first packet type
-        for (var i = 0; i < this.writeBuffer.length; i++) {
-          var data = this.writeBuffer[i].data;
-          if (data) {
-            payloadSize += byteLength(data);
-          }
-          if (i > 0 && payloadSize > this.maxPayload) {
-            return this.writeBuffer.slice(0, i);
-          }
-          payloadSize += 2; // separator + packet type
-        }
-
-        return this.writeBuffer;
-      }
-      /**
-       * Sends a message.
-       *
-       * @param {String} msg - message.
-       * @param {Object} options.
-       * @param {Function} callback function.
-       * @return {Socket} for chaining.
-       */
-    }, {
-      key: "write",
-      value: function write(msg, options, fn) {
-        this.sendPacket("message", msg, options, fn);
-        return this;
-      }
-    }, {
-      key: "send",
-      value: function send(msg, options, fn) {
-        this.sendPacket("message", msg, options, fn);
-        return this;
-      }
-      /**
-       * Sends a packet.
-       *
-       * @param {String} type: packet type.
-       * @param {String} data.
-       * @param {Object} options.
-       * @param {Function} fn - callback function.
-       * @private
-       */
-    }, {
-      key: "sendPacket",
-      value: function sendPacket(type, data, options, fn) {
-        if ("function" === typeof data) {
-          fn = data;
-          data = undefined;
-        }
-        if ("function" === typeof options) {
-          fn = options;
-          options = null;
-        }
-        if ("closing" === this.readyState || "closed" === this.readyState) {
-          return;
-        }
-        options = options || {};
-        options.compress = false !== options.compress;
-        var packet = {
-          type: type,
-          data: data,
-          options: options
-        };
-        this.emitReserved("packetCreate", packet);
-        this.writeBuffer.push(packet);
-        if (fn) this.once("flush", fn);
-        this.flush();
-      }
-      /**
-       * Closes the connection.
-       */
-    }, {
-      key: "close",
-      value: function close() {
-        var _this6 = this;
-        var close = function close() {
-          _this6.onClose("forced close");
-          _this6.transport.close();
-        };
-        var cleanupAndClose = function cleanupAndClose() {
-          _this6.off("upgrade", cleanupAndClose);
-          _this6.off("upgradeError", cleanupAndClose);
-          close();
-        };
-        var waitForUpgrade = function waitForUpgrade() {
-          // wait for upgrade to finish since we can't send packets while pausing a transport
-          _this6.once("upgrade", cleanupAndClose);
-          _this6.once("upgradeError", cleanupAndClose);
-        };
-        if ("opening" === this.readyState || "open" === this.readyState) {
-          this.readyState = "closing";
-          if (this.writeBuffer.length) {
-            this.once("drain", function () {
-              if (_this6.upgrading) {
-                waitForUpgrade();
-              } else {
-                close();
-              }
-            });
-          } else if (this.upgrading) {
-            waitForUpgrade();
-          } else {
-            close();
-          }
-        }
-        return this;
-      }
-      /**
-       * Called upon transport error
-       *
-       * @private
-       */
-    }, {
-      key: "onError",
-      value: function onError(err) {
-        Socket.priorWebsocketSuccess = false;
-        this.emitReserved("error", err);
-        this.onClose("transport error", err);
-      }
-      /**
-       * Called upon transport close.
-       *
-       * @private
-       */
-    }, {
-      key: "onClose",
-      value: function onClose(reason, description) {
-        if ("opening" === this.readyState || "open" === this.readyState || "closing" === this.readyState) {
-          // clear timers
-          this.clearTimeoutFn(this.pingTimeoutTimer);
-          // stop event from firing again for transport
-          this.transport.removeAllListeners("close");
-          // ensure transport won't stay open
-          this.transport.close();
-          // ignore further transport communication
-          this.transport.removeAllListeners();
-          if (typeof removeEventListener === "function") {
-            removeEventListener("beforeunload", this.beforeunloadEventListener, false);
-            removeEventListener("offline", this.offlineEventListener, false);
-          }
-          // set ready state
-          this.readyState = "closed";
-          // clear session id
-          this.id = null;
-          // emit close event
-          this.emitReserved("close", reason, description);
-          // clean buffers after, so users can still
-          // grab the buffers on `close` event
-          this.writeBuffer = [];
-          this.prevBufferLen = 0;
-        }
-      }
-      /**
-       * Filters upgrades, returning only those matching client transports.
-       *
-       * @param {Array} upgrades - server upgrades
-       * @private
-       */
-    }, {
-      key: "filterUpgrades",
-      value: function filterUpgrades(upgrades) {
-        var filteredUpgrades = [];
-        var i = 0;
-        var j = upgrades.length;
-        for (; i < j; i++) {
-          if (~this.transports.indexOf(upgrades[i])) filteredUpgrades.push(upgrades[i]);
-        }
-        return filteredUpgrades;
-      }
-    }]);
-    return Socket;
-  }(Emitter);
-  Socket$1.protocol = protocol$1;
-
-  Socket$1.protocol;
-
-  /**
-   * URL parser.
-   *
-   * @param uri - url
-   * @param path - the request path of the connection
-   * @param loc - An object meant to mimic window.location.
-   *        Defaults to window.location.
-   * @public
-   */
-  function url(uri) {
-    var path = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : "";
-    var loc = arguments.length > 2 ? arguments[2] : undefined;
-    var obj = uri;
-    // default to window.location
-    loc = loc || typeof location !== "undefined" && location;
-    if (null == uri) uri = loc.protocol + "//" + loc.host;
-    // relative path support
-    if (typeof uri === "string") {
-      if ("/" === uri.charAt(0)) {
-        if ("/" === uri.charAt(1)) {
-          uri = loc.protocol + uri;
-        } else {
-          uri = loc.host + uri;
-        }
-      }
-      if (!/^(https?|wss?):\/\//.test(uri)) {
-        if ("undefined" !== typeof loc) {
-          uri = loc.protocol + "//" + uri;
-        } else {
-          uri = "https://" + uri;
-        }
-      }
-      // parse
-      obj = parse(uri);
-    }
-    // make sure we treat `localhost:80` and `localhost` equally
-    if (!obj.port) {
-      if (/^(http|ws)$/.test(obj.protocol)) {
-        obj.port = "80";
-      } else if (/^(http|ws)s$/.test(obj.protocol)) {
-        obj.port = "443";
-      }
-    }
-    obj.path = obj.path || "/";
-    var ipv6 = obj.host.indexOf(":") !== -1;
-    var host = ipv6 ? "[" + obj.host + "]" : obj.host;
-    // define unique id
-    obj.id = obj.protocol + "://" + host + ":" + obj.port + path;
-    // define href
-    obj.href = obj.protocol + "://" + host + (loc && loc.port === obj.port ? "" : ":" + obj.port);
-    return obj;
-  }
-
-  var withNativeArrayBuffer = typeof ArrayBuffer === "function";
-  var isView = function isView(obj) {
-    return typeof ArrayBuffer.isView === "function" ? ArrayBuffer.isView(obj) : obj.buffer instanceof ArrayBuffer;
-  };
-  var toString = Object.prototype.toString;
-  var withNativeBlob = typeof Blob === "function" || typeof Blob !== "undefined" && toString.call(Blob) === "[object BlobConstructor]";
-  var withNativeFile = typeof File === "function" || typeof File !== "undefined" && toString.call(File) === "[object FileConstructor]";
-  /**
-   * Returns true if obj is a Buffer, an ArrayBuffer, a Blob or a File.
-   *
-   * @private
-   */
-  function isBinary(obj) {
-    return withNativeArrayBuffer && (obj instanceof ArrayBuffer || isView(obj)) || withNativeBlob && obj instanceof Blob || withNativeFile && obj instanceof File;
-  }
-  function hasBinary(obj, toJSON) {
-    if (!obj || _typeof(obj) !== "object") {
-      return false;
-    }
-    if (Array.isArray(obj)) {
-      for (var i = 0, l = obj.length; i < l; i++) {
-        if (hasBinary(obj[i])) {
-          return true;
-        }
-      }
-      return false;
-    }
-    if (isBinary(obj)) {
-      return true;
-    }
-    if (obj.toJSON && typeof obj.toJSON === "function" && arguments.length === 1) {
-      return hasBinary(obj.toJSON(), true);
-    }
-    for (var key in obj) {
-      if (Object.prototype.hasOwnProperty.call(obj, key) && hasBinary(obj[key])) {
-        return true;
-      }
-    }
-    return false;
-  }
-
-  /**
-   * Replaces every Buffer | ArrayBuffer | Blob | File in packet with a numbered placeholder.
-   *
-   * @param {Object} packet - socket.io event packet
-   * @return {Object} with deconstructed packet and list of buffers
-   * @public
-   */
-  function deconstructPacket(packet) {
-    var buffers = [];
-    var packetData = packet.data;
-    var pack = packet;
-    pack.data = _deconstructPacket(packetData, buffers);
-    pack.attachments = buffers.length; // number of binary 'attachments'
-    return {
-      packet: pack,
-      buffers: buffers
-    };
-  }
-  function _deconstructPacket(data, buffers) {
-    if (!data) return data;
-    if (isBinary(data)) {
-      var placeholder = {
-        _placeholder: true,
-        num: buffers.length
-      };
-      buffers.push(data);
-      return placeholder;
-    } else if (Array.isArray(data)) {
-      var newData = new Array(data.length);
-      for (var i = 0; i < data.length; i++) {
-        newData[i] = _deconstructPacket(data[i], buffers);
-      }
-      return newData;
-    } else if (_typeof(data) === "object" && !(data instanceof Date)) {
-      var _newData = {};
-      for (var key in data) {
-        if (Object.prototype.hasOwnProperty.call(data, key)) {
-          _newData[key] = _deconstructPacket(data[key], buffers);
-        }
-      }
-      return _newData;
-    }
-    return data;
-  }
-  /**
-   * Reconstructs a binary packet from its placeholder packet and buffers
-   *
-   * @param {Object} packet - event packet with placeholders
-   * @param {Array} buffers - binary buffers to put in placeholder positions
-   * @return {Object} reconstructed packet
-   * @public
-   */
-  function reconstructPacket(packet, buffers) {
-    packet.data = _reconstructPacket(packet.data, buffers);
-    delete packet.attachments; // no longer useful
-    return packet;
-  }
-  function _reconstructPacket(data, buffers) {
-    if (!data) return data;
-    if (data && data._placeholder === true) {
-      var isIndexValid = typeof data.num === "number" && data.num >= 0 && data.num < buffers.length;
-      if (isIndexValid) {
-        return buffers[data.num]; // appropriate buffer (should be natural order anyway)
-      } else {
-        throw new Error("illegal attachments");
-      }
-    } else if (Array.isArray(data)) {
-      for (var i = 0; i < data.length; i++) {
-        data[i] = _reconstructPacket(data[i], buffers);
-      }
-    } else if (_typeof(data) === "object") {
-      for (var key in data) {
-        if (Object.prototype.hasOwnProperty.call(data, key)) {
-          data[key] = _reconstructPacket(data[key], buffers);
-        }
-      }
-    }
-    return data;
-  }
-
-  /**
-   * These strings must not be used as event names, as they have a special meaning.
-   */
-  var RESERVED_EVENTS$1 = ["connect", "connect_error", "disconnect", "disconnecting", "newListener", "removeListener" // used by the Node.js EventEmitter
-  ];
-  /**
-   * Protocol version.
-   *
-   * @public
-   */
-  var protocol = 5;
-  var PacketType;
-  (function (PacketType) {
-    PacketType[PacketType["CONNECT"] = 0] = "CONNECT";
-    PacketType[PacketType["DISCONNECT"] = 1] = "DISCONNECT";
-    PacketType[PacketType["EVENT"] = 2] = "EVENT";
-    PacketType[PacketType["ACK"] = 3] = "ACK";
-    PacketType[PacketType["CONNECT_ERROR"] = 4] = "CONNECT_ERROR";
-    PacketType[PacketType["BINARY_EVENT"] = 5] = "BINARY_EVENT";
-    PacketType[PacketType["BINARY_ACK"] = 6] = "BINARY_ACK";
-  })(PacketType || (PacketType = {}));
-  /**
-   * A socket.io Encoder instance
-   */
-  var Encoder = /*#__PURE__*/function () {
-    /**
-     * Encoder constructor
-     *
-     * @param {function} replacer - custom replacer to pass down to JSON.parse
-     */
-    function Encoder(replacer) {
-      _classCallCheck(this, Encoder);
-      this.replacer = replacer;
-    }
-    /**
-     * Encode a packet as a single string if non-binary, or as a
-     * buffer sequence, depending on packet type.
-     *
-     * @param {Object} obj - packet object
-     */
-    _createClass(Encoder, [{
-      key: "encode",
-      value: function encode(obj) {
-        if (obj.type === PacketType.EVENT || obj.type === PacketType.ACK) {
-          if (hasBinary(obj)) {
-            return this.encodeAsBinary({
-              type: obj.type === PacketType.EVENT ? PacketType.BINARY_EVENT : PacketType.BINARY_ACK,
-              nsp: obj.nsp,
-              data: obj.data,
-              id: obj.id
-            });
-          }
-        }
-        return [this.encodeAsString(obj)];
-      }
-      /**
-       * Encode packet as string.
-       */
-    }, {
-      key: "encodeAsString",
-      value: function encodeAsString(obj) {
-        // first is type
-        var str = "" + obj.type;
-        // attachments if we have them
-        if (obj.type === PacketType.BINARY_EVENT || obj.type === PacketType.BINARY_ACK) {
-          str += obj.attachments + "-";
-        }
-        // if we have a namespace other than `/`
-        // we append it followed by a comma `,`
-        if (obj.nsp && "/" !== obj.nsp) {
-          str += obj.nsp + ",";
-        }
-        // immediately followed by the id
-        if (null != obj.id) {
-          str += obj.id;
-        }
-        // json data
-        if (null != obj.data) {
-          str += JSON.stringify(obj.data, this.replacer);
-        }
-        return str;
-      }
-      /**
-       * Encode packet as 'buffer sequence' by removing blobs, and
-       * deconstructing packet into object with placeholders and
-       * a list of buffers.
-       */
-    }, {
-      key: "encodeAsBinary",
-      value: function encodeAsBinary(obj) {
-        var deconstruction = deconstructPacket(obj);
-        var pack = this.encodeAsString(deconstruction.packet);
-        var buffers = deconstruction.buffers;
-        buffers.unshift(pack); // add packet info to beginning of data list
-        return buffers; // write all the buffers
-      }
-    }]);
-    return Encoder;
-  }();
-  // see https://stackoverflow.com/questions/8511281/check-if-a-value-is-an-object-in-javascript
-  function isObject(value) {
-    return Object.prototype.toString.call(value) === "[object Object]";
-  }
-  /**
-   * A socket.io Decoder instance
-   *
-   * @return {Object} decoder
-   */
-  var Decoder = /*#__PURE__*/function (_Emitter) {
-    _inherits(Decoder, _Emitter);
-    var _super = _createSuper(Decoder);
-    /**
-     * Decoder constructor
-     *
-     * @param {function} reviver - custom reviver to pass down to JSON.stringify
-     */
-    function Decoder(reviver) {
-      var _this;
-      _classCallCheck(this, Decoder);
-      _this = _super.call(this);
-      _this.reviver = reviver;
-      return _this;
-    }
-    /**
-     * Decodes an encoded packet string into packet JSON.
-     *
-     * @param {String} obj - encoded packet
-     */
-    _createClass(Decoder, [{
-      key: "add",
-      value: function add(obj) {
-        var packet;
-        if (typeof obj === "string") {
-          if (this.reconstructor) {
-            throw new Error("got plaintext data when reconstructing a packet");
-          }
-          packet = this.decodeString(obj);
-          var isBinaryEvent = packet.type === PacketType.BINARY_EVENT;
-          if (isBinaryEvent || packet.type === PacketType.BINARY_ACK) {
-            packet.type = isBinaryEvent ? PacketType.EVENT : PacketType.ACK;
-            // binary packet's json
-            this.reconstructor = new BinaryReconstructor(packet);
-            // no attachments, labeled binary but no binary data to follow
-            if (packet.attachments === 0) {
-              _get(_getPrototypeOf(Decoder.prototype), "emitReserved", this).call(this, "decoded", packet);
-            }
-          } else {
-            // non-binary full packet
-            _get(_getPrototypeOf(Decoder.prototype), "emitReserved", this).call(this, "decoded", packet);
-          }
-        } else if (isBinary(obj) || obj.base64) {
-          // raw binary data
-          if (!this.reconstructor) {
-            throw new Error("got binary data when not reconstructing a packet");
-          } else {
-            packet = this.reconstructor.takeBinaryData(obj);
-            if (packet) {
-              // received final buffer
-              this.reconstructor = null;
-              _get(_getPrototypeOf(Decoder.prototype), "emitReserved", this).call(this, "decoded", packet);
-            }
-          }
-        } else {
-          throw new Error("Unknown type: " + obj);
-        }
-      }
-      /**
-       * Decode a packet String (JSON data)
-       *
-       * @param {String} str
-       * @return {Object} packet
-       */
-    }, {
-      key: "decodeString",
-      value: function decodeString(str) {
-        var i = 0;
-        // look up type
-        var p = {
-          type: Number(str.charAt(0))
-        };
-        if (PacketType[p.type] === undefined) {
-          throw new Error("unknown packet type " + p.type);
-        }
-        // look up attachments if type binary
-        if (p.type === PacketType.BINARY_EVENT || p.type === PacketType.BINARY_ACK) {
-          var start = i + 1;
-          while (str.charAt(++i) !== "-" && i != str.length) {}
-          var buf = str.substring(start, i);
-          if (buf != Number(buf) || str.charAt(i) !== "-") {
-            throw new Error("Illegal attachments");
-          }
-          p.attachments = Number(buf);
-        }
-        // look up namespace (if any)
-        if ("/" === str.charAt(i + 1)) {
-          var _start = i + 1;
-          while (++i) {
-            var c = str.charAt(i);
-            if ("," === c) break;
-            if (i === str.length) break;
-          }
-          p.nsp = str.substring(_start, i);
-        } else {
-          p.nsp = "/";
-        }
-        // look up id
-        var next = str.charAt(i + 1);
-        if ("" !== next && Number(next) == next) {
-          var _start2 = i + 1;
-          while (++i) {
-            var _c = str.charAt(i);
-            if (null == _c || Number(_c) != _c) {
-              --i;
-              break;
-            }
-            if (i === str.length) break;
-          }
-          p.id = Number(str.substring(_start2, i + 1));
-        }
-        // look up json data
-        if (str.charAt(++i)) {
-          var payload = this.tryParse(str.substr(i));
-          if (Decoder.isPayloadValid(p.type, payload)) {
-            p.data = payload;
-          } else {
-            throw new Error("invalid payload");
-          }
-        }
-        return p;
-      }
-    }, {
-      key: "tryParse",
-      value: function tryParse(str) {
-        try {
-          return JSON.parse(str, this.reviver);
-        } catch (e) {
-          return false;
-        }
-      }
-    }, {
-      key: "destroy",
-      value:
-      /**
-       * Deallocates a parser's resources
-       */
-      function destroy() {
-        if (this.reconstructor) {
-          this.reconstructor.finishedReconstruction();
-          this.reconstructor = null;
-        }
-      }
-    }], [{
-      key: "isPayloadValid",
-      value: function isPayloadValid(type, payload) {
-        switch (type) {
-          case PacketType.CONNECT:
-            return isObject(payload);
-          case PacketType.DISCONNECT:
-            return payload === undefined;
-          case PacketType.CONNECT_ERROR:
-            return typeof payload === "string" || isObject(payload);
-          case PacketType.EVENT:
-          case PacketType.BINARY_EVENT:
-            return Array.isArray(payload) && (typeof payload[0] === "number" || typeof payload[0] === "string" && RESERVED_EVENTS$1.indexOf(payload[0]) === -1);
-          case PacketType.ACK:
-          case PacketType.BINARY_ACK:
-            return Array.isArray(payload);
-        }
-      }
-    }]);
-    return Decoder;
-  }(Emitter);
-  /**
-   * A manager of a binary event's 'buffer sequence'. Should
-   * be constructed whenever a packet of type BINARY_EVENT is
-   * decoded.
-   *
-   * @param {Object} packet
-   * @return {BinaryReconstructor} initialized reconstructor
-   */
-  var BinaryReconstructor = /*#__PURE__*/function () {
-    function BinaryReconstructor(packet) {
-      _classCallCheck(this, BinaryReconstructor);
-      this.packet = packet;
-      this.buffers = [];
-      this.reconPack = packet;
-    }
-    /**
-     * Method to be called when binary data received from connection
-     * after a BINARY_EVENT packet.
-     *
-     * @param {Buffer | ArrayBuffer} binData - the raw binary data received
-     * @return {null | Object} returns null if more binary data is expected or
-     *   a reconstructed packet object if all buffers have been received.
-     */
-    _createClass(BinaryReconstructor, [{
-      key: "takeBinaryData",
-      value: function takeBinaryData(binData) {
-        this.buffers.push(binData);
-        if (this.buffers.length === this.reconPack.attachments) {
-          // done with buffer list
-          var packet = reconstructPacket(this.reconPack, this.buffers);
-          this.finishedReconstruction();
-          return packet;
-        }
-        return null;
-      }
-      /**
-       * Cleans up binary packet reconstruction variables.
-       */
-    }, {
-      key: "finishedReconstruction",
-      value: function finishedReconstruction() {
-        this.reconPack = null;
-        this.buffers = [];
-      }
-    }]);
-    return BinaryReconstructor;
-  }();
-
-  var parser = /*#__PURE__*/Object.freeze({
-    __proto__: null,
-    protocol: protocol,
-    get PacketType () { return PacketType; },
-    Encoder: Encoder,
-    Decoder: Decoder
-  });
-
-  function on(obj, ev, fn) {
-    obj.on(ev, fn);
-    return function subDestroy() {
-      obj.off(ev, fn);
-    };
-  }
-
-  /**
-   * Internal events.
-   * These events can't be emitted by the user.
-   */
-  var RESERVED_EVENTS = Object.freeze({
-    connect: 1,
-    connect_error: 1,
-    disconnect: 1,
-    disconnecting: 1,
-    // EventEmitter reserved events: https://nodejs.org/api/events.html#events_event_newlistener
-    newListener: 1,
-    removeListener: 1
-  });
-  /**
-   * A Socket is the fundamental class for interacting with the server.
-   *
-   * A Socket belongs to a certain Namespace (by default /) and uses an underlying {@link Manager} to communicate.
-   *
-   * @example
-   * const socket = io();
-   *
-   * socket.on("connect", () => {
-   *   console.log("connected");
-   * });
-   *
-   * // send an event to the server
-   * socket.emit("foo", "bar");
-   *
-   * socket.on("foobar", () => {
-   *   // an event was received from the server
-   * });
-   *
-   * // upon disconnection
-   * socket.on("disconnect", (reason) => {
-   *   console.log(`disconnected due to ${reason}`);
-   * });
-   */
-  var Socket = /*#__PURE__*/function (_Emitter) {
-    _inherits(Socket, _Emitter);
-    var _super = _createSuper(Socket);
-    /**
-     * `Socket` constructor.
-     */
-    function Socket(io, nsp, opts) {
-      var _this;
-      _classCallCheck(this, Socket);
-      _this = _super.call(this);
-      /**
-       * Whether the socket is currently connected to the server.
-       *
-       * @example
-       * const socket = io();
-       *
-       * socket.on("connect", () => {
-       *   console.log(socket.connected); // true
-       * });
-       *
-       * socket.on("disconnect", () => {
-       *   console.log(socket.connected); // false
-       * });
-       */
-      _this.connected = false;
-      /**
-       * Whether the connection state was recovered after a temporary disconnection. In that case, any missed packets will
-       * be transmitted by the server.
-       */
-      _this.recovered = false;
-      /**
-       * Buffer for packets received before the CONNECT packet
-       */
-      _this.receiveBuffer = [];
-      /**
-       * Buffer for packets that will be sent once the socket is connected
-       */
-      _this.sendBuffer = [];
-      /**
-       * The queue of packets to be sent with retry in case of failure.
-       *
-       * Packets are sent one by one, each waiting for the server acknowledgement, in order to guarantee the delivery order.
-       * @private
-       */
-      _this._queue = [];
-      /**
-       * A sequence to generate the ID of the {@link QueuedPacket}.
-       * @private
-       */
-      _this._queueSeq = 0;
-      _this.ids = 0;
-      _this.acks = {};
-      _this.flags = {};
-      _this.io = io;
-      _this.nsp = nsp;
-      if (opts && opts.auth) {
-        _this.auth = opts.auth;
-      }
-      _this._opts = _extends({}, opts);
-      if (_this.io._autoConnect) _this.open();
-      return _this;
-    }
-    /**
-     * Whether the socket is currently disconnected
-     *
-     * @example
-     * const socket = io();
-     *
-     * socket.on("connect", () => {
-     *   console.log(socket.disconnected); // false
-     * });
-     *
-     * socket.on("disconnect", () => {
-     *   console.log(socket.disconnected); // true
-     * });
-     */
-    _createClass(Socket, [{
-      key: "disconnected",
-      get: function get() {
-        return !this.connected;
-      }
-      /**
-       * Subscribe to open, close and packet events
-       *
-       * @private
-       */
-    }, {
-      key: "subEvents",
-      value: function subEvents() {
-        if (this.subs) return;
-        var io = this.io;
-        this.subs = [on(io, "open", this.onopen.bind(this)), on(io, "packet", this.onpacket.bind(this)), on(io, "error", this.onerror.bind(this)), on(io, "close", this.onclose.bind(this))];
-      }
-      /**
-       * Whether the Socket will try to reconnect when its Manager connects or reconnects.
-       *
-       * @example
-       * const socket = io();
-       *
-       * console.log(socket.active); // true
-       *
-       * socket.on("disconnect", (reason) => {
-       *   if (reason === "io server disconnect") {
-       *     // the disconnection was initiated by the server, you need to manually reconnect
-       *     console.log(socket.active); // false
-       *   }
-       *   // else the socket will automatically try to reconnect
-       *   console.log(socket.active); // true
-       * });
-       */
-    }, {
-      key: "active",
-      get: function get() {
-        return !!this.subs;
-      }
-      /**
-       * "Opens" the socket.
-       *
-       * @example
-       * const socket = io({
-       *   autoConnect: false
-       * });
-       *
-       * socket.connect();
-       */
-    }, {
-      key: "connect",
-      value: function connect() {
-        if (this.connected) return this;
-        this.subEvents();
-        if (!this.io["_reconnecting"]) this.io.open(); // ensure open
-        if ("open" === this.io._readyState) this.onopen();
-        return this;
-      }
-      /**
-       * Alias for {@link connect()}.
-       */
-    }, {
-      key: "open",
-      value: function open() {
-        return this.connect();
-      }
-      /**
-       * Sends a `message` event.
-       *
-       * This method mimics the WebSocket.send() method.
-       *
-       * @see https://developer.mozilla.org/en-US/docs/Web/API/WebSocket/send
-       *
-       * @example
-       * socket.send("hello");
-       *
-       * // this is equivalent to
-       * socket.emit("message", "hello");
-       *
-       * @return self
-       */
-    }, {
-      key: "send",
-      value: function send() {
-        for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
-          args[_key] = arguments[_key];
-        }
-        args.unshift("message");
-        this.emit.apply(this, args);
-        return this;
-      }
-      /**
-       * Override `emit`.
-       * If the event is in `events`, it's emitted normally.
-       *
-       * @example
-       * socket.emit("hello", "world");
-       *
-       * // all serializable datastructures are supported (no need to call JSON.stringify)
-       * socket.emit("hello", 1, "2", { 3: ["4"], 5: Uint8Array.from([6]) });
-       *
-       * // with an acknowledgement from the server
-       * socket.emit("hello", "world", (val) => {
-       *   // ...
-       * });
-       *
-       * @return self
-       */
-    }, {
-      key: "emit",
-      value: function emit(ev) {
-        if (RESERVED_EVENTS.hasOwnProperty(ev)) {
-          throw new Error('"' + ev.toString() + '" is a reserved event name');
-        }
-        for (var _len2 = arguments.length, args = new Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
-          args[_key2 - 1] = arguments[_key2];
-        }
-        args.unshift(ev);
-        if (this._opts.retries && !this.flags.fromQueue && !this.flags["volatile"]) {
-          this._addToQueue(args);
-          return this;
-        }
-        var packet = {
-          type: PacketType.EVENT,
-          data: args
-        };
-        packet.options = {};
-        packet.options.compress = this.flags.compress !== false;
-        // event ack callback
-        if ("function" === typeof args[args.length - 1]) {
-          var id = this.ids++;
-          var ack = args.pop();
-          this._registerAckCallback(id, ack);
-          packet.id = id;
-        }
-        var isTransportWritable = this.io.engine && this.io.engine.transport && this.io.engine.transport.writable;
-        var discardPacket = this.flags["volatile"] && (!isTransportWritable || !this.connected);
-        if (discardPacket) ; else if (this.connected) {
-          this.notifyOutgoingListeners(packet);
-          this.packet(packet);
-        } else {
-          this.sendBuffer.push(packet);
-        }
-        this.flags = {};
-        return this;
-      }
-      /**
-       * @private
-       */
-    }, {
-      key: "_registerAckCallback",
-      value: function _registerAckCallback(id, ack) {
-        var _this2 = this;
-        var _a;
-        var timeout = (_a = this.flags.timeout) !== null && _a !== void 0 ? _a : this._opts.ackTimeout;
-        if (timeout === undefined) {
-          this.acks[id] = ack;
-          return;
-        }
-        // @ts-ignore
-        var timer = this.io.setTimeoutFn(function () {
-          delete _this2.acks[id];
-          for (var i = 0; i < _this2.sendBuffer.length; i++) {
-            if (_this2.sendBuffer[i].id === id) {
-              _this2.sendBuffer.splice(i, 1);
-            }
-          }
-          ack.call(_this2, new Error("operation has timed out"));
-        }, timeout);
-        this.acks[id] = function () {
-          // @ts-ignore
-          _this2.io.clearTimeoutFn(timer);
-          for (var _len3 = arguments.length, args = new Array(_len3), _key3 = 0; _key3 < _len3; _key3++) {
-            args[_key3] = arguments[_key3];
-          }
-          ack.apply(_this2, [null].concat(args));
-        };
-      }
-      /**
-       * Emits an event and waits for an acknowledgement
-       *
-       * @example
-       * // without timeout
-       * const response = await socket.emitWithAck("hello", "world");
-       *
-       * // with a specific timeout
-       * try {
-       *   const response = await socket.timeout(1000).emitWithAck("hello", "world");
-       * } catch (err) {
-       *   // the server did not acknowledge the event in the given delay
-       * }
-       *
-       * @return a Promise that will be fulfilled when the server acknowledges the event
-       */
-    }, {
-      key: "emitWithAck",
-      value: function emitWithAck(ev) {
-        var _this3 = this;
-        for (var _len4 = arguments.length, args = new Array(_len4 > 1 ? _len4 - 1 : 0), _key4 = 1; _key4 < _len4; _key4++) {
-          args[_key4 - 1] = arguments[_key4];
-        }
-        // the timeout flag is optional
-        var withErr = this.flags.timeout !== undefined || this._opts.ackTimeout !== undefined;
-        return new Promise(function (resolve, reject) {
-          args.push(function (arg1, arg2) {
-            if (withErr) {
-              return arg1 ? reject(arg1) : resolve(arg2);
-            } else {
-              return resolve(arg1);
-            }
-          });
-          _this3.emit.apply(_this3, [ev].concat(args));
-        });
-      }
-      /**
-       * Add the packet to the queue.
-       * @param args
-       * @private
-       */
-    }, {
-      key: "_addToQueue",
-      value: function _addToQueue(args) {
-        var _this4 = this;
-        var ack;
-        if (typeof args[args.length - 1] === "function") {
-          ack = args.pop();
-        }
-        var packet = {
-          id: this._queueSeq++,
-          tryCount: 0,
-          pending: false,
-          args: args,
-          flags: _extends({
-            fromQueue: true
-          }, this.flags)
-        };
-        args.push(function (err) {
-          if (packet !== _this4._queue[0]) {
-            // the packet has already been acknowledged
-            return;
-          }
-          var hasError = err !== null;
-          if (hasError) {
-            if (packet.tryCount > _this4._opts.retries) {
-              _this4._queue.shift();
-              if (ack) {
-                ack(err);
-              }
-            }
-          } else {
-            _this4._queue.shift();
-            if (ack) {
-              for (var _len5 = arguments.length, responseArgs = new Array(_len5 > 1 ? _len5 - 1 : 0), _key5 = 1; _key5 < _len5; _key5++) {
-                responseArgs[_key5 - 1] = arguments[_key5];
-              }
-              ack.apply(void 0, [null].concat(responseArgs));
-            }
-          }
-          packet.pending = false;
-          return _this4._drainQueue();
-        });
-        this._queue.push(packet);
-        this._drainQueue();
-      }
-      /**
-       * Send the first packet of the queue, and wait for an acknowledgement from the server.
-       * @param force - whether to resend a packet that has not been acknowledged yet
-       *
-       * @private
-       */
-    }, {
-      key: "_drainQueue",
-      value: function _drainQueue() {
-        var force = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : false;
-        if (!this.connected || this._queue.length === 0) {
-          return;
-        }
-        var packet = this._queue[0];
-        if (packet.pending && !force) {
-          return;
-        }
-        packet.pending = true;
-        packet.tryCount++;
-        this.flags = packet.flags;
-        this.emit.apply(this, packet.args);
-      }
-      /**
-       * Sends a packet.
-       *
-       * @param packet
-       * @private
-       */
-    }, {
-      key: "packet",
-      value: function packet(_packet) {
-        _packet.nsp = this.nsp;
-        this.io._packet(_packet);
-      }
-      /**
-       * Called upon engine `open`.
-       *
-       * @private
-       */
-    }, {
-      key: "onopen",
-      value: function onopen() {
-        var _this5 = this;
-        if (typeof this.auth == "function") {
-          this.auth(function (data) {
-            _this5._sendConnectPacket(data);
-          });
-        } else {
-          this._sendConnectPacket(this.auth);
-        }
-      }
-      /**
-       * Sends a CONNECT packet to initiate the Socket.IO session.
-       *
-       * @param data
-       * @private
-       */
-    }, {
-      key: "_sendConnectPacket",
-      value: function _sendConnectPacket(data) {
-        this.packet({
-          type: PacketType.CONNECT,
-          data: this._pid ? _extends({
-            pid: this._pid,
-            offset: this._lastOffset
-          }, data) : data
-        });
-      }
-      /**
-       * Called upon engine or manager `error`.
-       *
-       * @param err
-       * @private
-       */
-    }, {
-      key: "onerror",
-      value: function onerror(err) {
-        if (!this.connected) {
-          this.emitReserved("connect_error", err);
-        }
-      }
-      /**
-       * Called upon engine `close`.
-       *
-       * @param reason
-       * @param description
-       * @private
-       */
-    }, {
-      key: "onclose",
-      value: function onclose(reason, description) {
-        this.connected = false;
-        delete this.id;
-        this.emitReserved("disconnect", reason, description);
-      }
-      /**
-       * Called with socket packet.
-       *
-       * @param packet
-       * @private
-       */
-    }, {
-      key: "onpacket",
-      value: function onpacket(packet) {
-        var sameNamespace = packet.nsp === this.nsp;
-        if (!sameNamespace) return;
-        switch (packet.type) {
-          case PacketType.CONNECT:
-            if (packet.data && packet.data.sid) {
-              this.onconnect(packet.data.sid, packet.data.pid);
-            } else {
-              this.emitReserved("connect_error", new Error("It seems you are trying to reach a Socket.IO server in v2.x with a v3.x client, but they are not compatible (more information here: https://socket.io/docs/v3/migrating-from-2-x-to-3-0/)"));
-            }
-            break;
-          case PacketType.EVENT:
-          case PacketType.BINARY_EVENT:
-            this.onevent(packet);
-            break;
-          case PacketType.ACK:
-          case PacketType.BINARY_ACK:
-            this.onack(packet);
-            break;
-          case PacketType.DISCONNECT:
-            this.ondisconnect();
-            break;
-          case PacketType.CONNECT_ERROR:
-            this.destroy();
-            var err = new Error(packet.data.message);
-            // @ts-ignore
-            err.data = packet.data.data;
-            this.emitReserved("connect_error", err);
-            break;
-        }
-      }
-      /**
-       * Called upon a server event.
-       *
-       * @param packet
-       * @private
-       */
-    }, {
-      key: "onevent",
-      value: function onevent(packet) {
-        var args = packet.data || [];
-        if (null != packet.id) {
-          args.push(this.ack(packet.id));
-        }
-        if (this.connected) {
-          this.emitEvent(args);
-        } else {
-          this.receiveBuffer.push(Object.freeze(args));
-        }
-      }
-    }, {
-      key: "emitEvent",
-      value: function emitEvent(args) {
-        if (this._anyListeners && this._anyListeners.length) {
-          var listeners = this._anyListeners.slice();
-          var _iterator = _createForOfIteratorHelper(listeners),
-            _step;
-          try {
-            for (_iterator.s(); !(_step = _iterator.n()).done;) {
-              var listener = _step.value;
-              listener.apply(this, args);
-            }
-          } catch (err) {
-            _iterator.e(err);
-          } finally {
-            _iterator.f();
-          }
-        }
-        _get(_getPrototypeOf(Socket.prototype), "emit", this).apply(this, args);
-        if (this._pid && args.length && typeof args[args.length - 1] === "string") {
-          this._lastOffset = args[args.length - 1];
-        }
-      }
-      /**
-       * Produces an ack callback to emit with an event.
-       *
-       * @private
-       */
-    }, {
-      key: "ack",
-      value: function ack(id) {
-        var self = this;
-        var sent = false;
-        return function () {
-          // prevent double callbacks
-          if (sent) return;
-          sent = true;
-          for (var _len6 = arguments.length, args = new Array(_len6), _key6 = 0; _key6 < _len6; _key6++) {
-            args[_key6] = arguments[_key6];
-          }
-          self.packet({
-            type: PacketType.ACK,
-            id: id,
-            data: args
-          });
-        };
-      }
-      /**
-       * Called upon a server acknowlegement.
-       *
-       * @param packet
-       * @private
-       */
-    }, {
-      key: "onack",
-      value: function onack(packet) {
-        var ack = this.acks[packet.id];
-        if ("function" === typeof ack) {
-          ack.apply(this, packet.data);
-          delete this.acks[packet.id];
-        }
-      }
-      /**
-       * Called upon server connect.
-       *
-       * @private
-       */
-    }, {
-      key: "onconnect",
-      value: function onconnect(id, pid) {
-        this.id = id;
-        this.recovered = pid && this._pid === pid;
-        this._pid = pid; // defined only if connection state recovery is enabled
-        this.connected = true;
-        this.emitBuffered();
-        this.emitReserved("connect");
-        this._drainQueue(true);
-      }
-      /**
-       * Emit buffered events (received and emitted).
-       *
-       * @private
-       */
-    }, {
-      key: "emitBuffered",
-      value: function emitBuffered() {
-        var _this6 = this;
-        this.receiveBuffer.forEach(function (args) {
-          return _this6.emitEvent(args);
-        });
-        this.receiveBuffer = [];
-        this.sendBuffer.forEach(function (packet) {
-          _this6.notifyOutgoingListeners(packet);
-          _this6.packet(packet);
-        });
-        this.sendBuffer = [];
-      }
-      /**
-       * Called upon server disconnect.
-       *
-       * @private
-       */
-    }, {
-      key: "ondisconnect",
-      value: function ondisconnect() {
-        this.destroy();
-        this.onclose("io server disconnect");
-      }
-      /**
-       * Called upon forced client/server side disconnections,
-       * this method ensures the manager stops tracking us and
-       * that reconnections don't get triggered for this.
-       *
-       * @private
-       */
-    }, {
-      key: "destroy",
-      value: function destroy() {
-        if (this.subs) {
-          // clean subscriptions to avoid reconnections
-          this.subs.forEach(function (subDestroy) {
-            return subDestroy();
-          });
-          this.subs = undefined;
-        }
-        this.io["_destroy"](this);
-      }
-      /**
-       * Disconnects the socket manually. In that case, the socket will not try to reconnect.
-       *
-       * If this is the last active Socket instance of the {@link Manager}, the low-level connection will be closed.
-       *
-       * @example
-       * const socket = io();
-       *
-       * socket.on("disconnect", (reason) => {
-       *   // console.log(reason); prints "io client disconnect"
-       * });
-       *
-       * socket.disconnect();
-       *
-       * @return self
-       */
-    }, {
-      key: "disconnect",
-      value: function disconnect() {
-        if (this.connected) {
-          this.packet({
-            type: PacketType.DISCONNECT
-          });
-        }
-        // remove socket from pool
-        this.destroy();
-        if (this.connected) {
-          // fire events
-          this.onclose("io client disconnect");
-        }
-        return this;
-      }
-      /**
-       * Alias for {@link disconnect()}.
-       *
-       * @return self
-       */
-    }, {
-      key: "close",
-      value: function close() {
-        return this.disconnect();
-      }
-      /**
-       * Sets the compress flag.
-       *
-       * @example
-       * socket.compress(false).emit("hello");
-       *
-       * @param compress - if `true`, compresses the sending data
-       * @return self
-       */
-    }, {
-      key: "compress",
-      value: function compress(_compress) {
-        this.flags.compress = _compress;
-        return this;
-      }
-      /**
-       * Sets a modifier for a subsequent event emission that the event message will be dropped when this socket is not
-       * ready to send messages.
-       *
-       * @example
-       * socket.volatile.emit("hello"); // the server may or may not receive it
-       *
-       * @returns self
-       */
-    }, {
-      key: "volatile",
-      get: function get() {
-        this.flags["volatile"] = true;
-        return this;
-      }
-      /**
-       * Sets a modifier for a subsequent event emission that the callback will be called with an error when the
-       * given number of milliseconds have elapsed without an acknowledgement from the server:
-       *
-       * @example
-       * socket.timeout(5000).emit("my-event", (err) => {
-       *   if (err) {
-       *     // the server did not acknowledge the event in the given delay
-       *   }
-       * });
-       *
-       * @returns self
-       */
-    }, {
-      key: "timeout",
-      value: function timeout(_timeout) {
-        this.flags.timeout = _timeout;
-        return this;
-      }
-      /**
-       * Adds a listener that will be fired when any event is emitted. The event name is passed as the first argument to the
-       * callback.
-       *
-       * @example
-       * socket.onAny((event, ...args) => {
-       *   console.log(`got ${event}`);
-       * });
-       *
-       * @param listener
-       */
-    }, {
-      key: "onAny",
-      value: function onAny(listener) {
-        this._anyListeners = this._anyListeners || [];
-        this._anyListeners.push(listener);
-        return this;
-      }
-      /**
-       * Adds a listener that will be fired when any event is emitted. The event name is passed as the first argument to the
-       * callback. The listener is added to the beginning of the listeners array.
-       *
-       * @example
-       * socket.prependAny((event, ...args) => {
-       *   console.log(`got event ${event}`);
-       * });
-       *
-       * @param listener
-       */
-    }, {
-      key: "prependAny",
-      value: function prependAny(listener) {
-        this._anyListeners = this._anyListeners || [];
-        this._anyListeners.unshift(listener);
-        return this;
-      }
-      /**
-       * Removes the listener that will be fired when any event is emitted.
-       *
-       * @example
-       * const catchAllListener = (event, ...args) => {
-       *   console.log(`got event ${event}`);
-       * }
-       *
-       * socket.onAny(catchAllListener);
-       *
-       * // remove a specific listener
-       * socket.offAny(catchAllListener);
-       *
-       * // or remove all listeners
-       * socket.offAny();
-       *
-       * @param listener
-       */
-    }, {
-      key: "offAny",
-      value: function offAny(listener) {
-        if (!this._anyListeners) {
-          return this;
-        }
-        if (listener) {
-          var listeners = this._anyListeners;
-          for (var i = 0; i < listeners.length; i++) {
-            if (listener === listeners[i]) {
-              listeners.splice(i, 1);
-              return this;
-            }
-          }
-        } else {
-          this._anyListeners = [];
-        }
-        return this;
-      }
-      /**
-       * Returns an array of listeners that are listening for any event that is specified. This array can be manipulated,
-       * e.g. to remove listeners.
-       */
-    }, {
-      key: "listenersAny",
-      value: function listenersAny() {
-        return this._anyListeners || [];
-      }
-      /**
-       * Adds a listener that will be fired when any event is emitted. The event name is passed as the first argument to the
-       * callback.
-       *
-       * Note: acknowledgements sent to the server are not included.
-       *
-       * @example
-       * socket.onAnyOutgoing((event, ...args) => {
-       *   console.log(`sent event ${event}`);
-       * });
-       *
-       * @param listener
-       */
-    }, {
-      key: "onAnyOutgoing",
-      value: function onAnyOutgoing(listener) {
-        this._anyOutgoingListeners = this._anyOutgoingListeners || [];
-        this._anyOutgoingListeners.push(listener);
-        return this;
-      }
-      /**
-       * Adds a listener that will be fired when any event is emitted. The event name is passed as the first argument to the
-       * callback. The listener is added to the beginning of the listeners array.
-       *
-       * Note: acknowledgements sent to the server are not included.
-       *
-       * @example
-       * socket.prependAnyOutgoing((event, ...args) => {
-       *   console.log(`sent event ${event}`);
-       * });
-       *
-       * @param listener
-       */
-    }, {
-      key: "prependAnyOutgoing",
-      value: function prependAnyOutgoing(listener) {
-        this._anyOutgoingListeners = this._anyOutgoingListeners || [];
-        this._anyOutgoingListeners.unshift(listener);
-        return this;
-      }
-      /**
-       * Removes the listener that will be fired when any event is emitted.
-       *
-       * @example
-       * const catchAllListener = (event, ...args) => {
-       *   console.log(`sent event ${event}`);
-       * }
-       *
-       * socket.onAnyOutgoing(catchAllListener);
-       *
-       * // remove a specific listener
-       * socket.offAnyOutgoing(catchAllListener);
-       *
-       * // or remove all listeners
-       * socket.offAnyOutgoing();
-       *
-       * @param [listener] - the catch-all listener (optional)
-       */
-    }, {
-      key: "offAnyOutgoing",
-      value: function offAnyOutgoing(listener) {
-        if (!this._anyOutgoingListeners) {
-          return this;
-        }
-        if (listener) {
-          var listeners = this._anyOutgoingListeners;
-          for (var i = 0; i < listeners.length; i++) {
-            if (listener === listeners[i]) {
-              listeners.splice(i, 1);
-              return this;
-            }
-          }
-        } else {
-          this._anyOutgoingListeners = [];
-        }
-        return this;
-      }
-      /**
-       * Returns an array of listeners that are listening for any event that is specified. This array can be manipulated,
-       * e.g. to remove listeners.
-       */
-    }, {
-      key: "listenersAnyOutgoing",
-      value: function listenersAnyOutgoing() {
-        return this._anyOutgoingListeners || [];
-      }
-      /**
-       * Notify the listeners for each packet sent
-       *
-       * @param packet
-       *
-       * @private
-       */
-    }, {
-      key: "notifyOutgoingListeners",
-      value: function notifyOutgoingListeners(packet) {
-        if (this._anyOutgoingListeners && this._anyOutgoingListeners.length) {
-          var listeners = this._anyOutgoingListeners.slice();
-          var _iterator2 = _createForOfIteratorHelper(listeners),
-            _step2;
-          try {
-            for (_iterator2.s(); !(_step2 = _iterator2.n()).done;) {
-              var listener = _step2.value;
-              listener.apply(this, packet.data);
-            }
-          } catch (err) {
-            _iterator2.e(err);
-          } finally {
-            _iterator2.f();
-          }
-        }
-      }
-    }]);
-    return Socket;
-  }(Emitter);
-
-  /**
-   * Initialize backoff timer with `opts`.
-   *
-   * - `min` initial timeout in milliseconds [100]
-   * - `max` max timeout [10000]
-   * - `jitter` [0]
-   * - `factor` [2]
-   *
-   * @param {Object} opts
-   * @api public
-   */
-  function Backoff(opts) {
-    opts = opts || {};
-    this.ms = opts.min || 100;
-    this.max = opts.max || 10000;
-    this.factor = opts.factor || 2;
-    this.jitter = opts.jitter > 0 && opts.jitter <= 1 ? opts.jitter : 0;
-    this.attempts = 0;
-  }
-  /**
-   * Return the backoff duration.
-   *
-   * @return {Number}
-   * @api public
-   */
-  Backoff.prototype.duration = function () {
-    var ms = this.ms * Math.pow(this.factor, this.attempts++);
-    if (this.jitter) {
-      var rand = Math.random();
-      var deviation = Math.floor(rand * this.jitter * ms);
-      ms = (Math.floor(rand * 10) & 1) == 0 ? ms - deviation : ms + deviation;
-    }
-    return Math.min(ms, this.max) | 0;
-  };
-  /**
-   * Reset the number of attempts.
-   *
-   * @api public
-   */
-  Backoff.prototype.reset = function () {
-    this.attempts = 0;
-  };
-  /**
-   * Set the minimum duration
-   *
-   * @api public
-   */
-  Backoff.prototype.setMin = function (min) {
-    this.ms = min;
-  };
-  /**
-   * Set the maximum duration
-   *
-   * @api public
-   */
-  Backoff.prototype.setMax = function (max) {
-    this.max = max;
-  };
-  /**
-   * Set the jitter
-   *
-   * @api public
-   */
-  Backoff.prototype.setJitter = function (jitter) {
-    this.jitter = jitter;
-  };
-
-  var Manager = /*#__PURE__*/function (_Emitter) {
-    _inherits(Manager, _Emitter);
-    var _super = _createSuper(Manager);
-    function Manager(uri, opts) {
-      var _this;
-      _classCallCheck(this, Manager);
-      var _a;
-      _this = _super.call(this);
-      _this.nsps = {};
-      _this.subs = [];
-      if (uri && "object" === _typeof(uri)) {
-        opts = uri;
-        uri = undefined;
-      }
-      opts = opts || {};
-      opts.path = opts.path || "/socket.io";
-      _this.opts = opts;
-      installTimerFunctions(_assertThisInitialized(_this), opts);
-      _this.reconnection(opts.reconnection !== false);
-      _this.reconnectionAttempts(opts.reconnectionAttempts || Infinity);
-      _this.reconnectionDelay(opts.reconnectionDelay || 1000);
-      _this.reconnectionDelayMax(opts.reconnectionDelayMax || 5000);
-      _this.randomizationFactor((_a = opts.randomizationFactor) !== null && _a !== void 0 ? _a : 0.5);
-      _this.backoff = new Backoff({
-        min: _this.reconnectionDelay(),
-        max: _this.reconnectionDelayMax(),
-        jitter: _this.randomizationFactor()
-      });
-      _this.timeout(null == opts.timeout ? 20000 : opts.timeout);
-      _this._readyState = "closed";
-      _this.uri = uri;
-      var _parser = opts.parser || parser;
-      _this.encoder = new _parser.Encoder();
-      _this.decoder = new _parser.Decoder();
-      _this._autoConnect = opts.autoConnect !== false;
-      if (_this._autoConnect) _this.open();
-      return _this;
-    }
-    _createClass(Manager, [{
-      key: "reconnection",
-      value: function reconnection(v) {
-        if (!arguments.length) return this._reconnection;
-        this._reconnection = !!v;
-        return this;
-      }
-    }, {
-      key: "reconnectionAttempts",
-      value: function reconnectionAttempts(v) {
-        if (v === undefined) return this._reconnectionAttempts;
-        this._reconnectionAttempts = v;
-        return this;
-      }
-    }, {
-      key: "reconnectionDelay",
-      value: function reconnectionDelay(v) {
-        var _a;
-        if (v === undefined) return this._reconnectionDelay;
-        this._reconnectionDelay = v;
-        (_a = this.backoff) === null || _a === void 0 ? void 0 : _a.setMin(v);
-        return this;
-      }
-    }, {
-      key: "randomizationFactor",
-      value: function randomizationFactor(v) {
-        var _a;
-        if (v === undefined) return this._randomizationFactor;
-        this._randomizationFactor = v;
-        (_a = this.backoff) === null || _a === void 0 ? void 0 : _a.setJitter(v);
-        return this;
-      }
-    }, {
-      key: "reconnectionDelayMax",
-      value: function reconnectionDelayMax(v) {
-        var _a;
-        if (v === undefined) return this._reconnectionDelayMax;
-        this._reconnectionDelayMax = v;
-        (_a = this.backoff) === null || _a === void 0 ? void 0 : _a.setMax(v);
-        return this;
-      }
-    }, {
-      key: "timeout",
-      value: function timeout(v) {
-        if (!arguments.length) return this._timeout;
-        this._timeout = v;
-        return this;
-      }
-      /**
-       * Starts trying to reconnect if reconnection is enabled and we have not
-       * started reconnecting yet
-       *
-       * @private
-       */
-    }, {
-      key: "maybeReconnectOnOpen",
-      value: function maybeReconnectOnOpen() {
-        // Only try to reconnect if it's the first time we're connecting
-        if (!this._reconnecting && this._reconnection && this.backoff.attempts === 0) {
-          // keeps reconnection from firing twice for the same reconnection loop
-          this.reconnect();
-        }
-      }
-      /**
-       * Sets the current transport `socket`.
-       *
-       * @param {Function} fn - optional, callback
-       * @return self
-       * @public
-       */
-    }, {
-      key: "open",
-      value: function open(fn) {
-        var _this2 = this;
-        if (~this._readyState.indexOf("open")) return this;
-        this.engine = new Socket$1(this.uri, this.opts);
-        var socket = this.engine;
-        var self = this;
-        this._readyState = "opening";
-        this.skipReconnect = false;
-        // emit `open`
-        var openSubDestroy = on(socket, "open", function () {
-          self.onopen();
-          fn && fn();
-        });
-        var onError = function onError(err) {
-          _this2.cleanup();
-          _this2._readyState = "closed";
-          _this2.emitReserved("error", err);
-          if (fn) {
-            fn(err);
-          } else {
-            // Only do this if there is no fn to handle the error
-            _this2.maybeReconnectOnOpen();
-          }
-        };
-        // emit `error`
-        var errorSub = on(socket, "error", onError);
-        if (false !== this._timeout) {
-          var timeout = this._timeout;
-          // set timer
-          var timer = this.setTimeoutFn(function () {
-            openSubDestroy();
-            onError(new Error("timeout"));
-            socket.close();
-          }, timeout);
-          if (this.opts.autoUnref) {
-            timer.unref();
-          }
-          this.subs.push(function () {
-            _this2.clearTimeoutFn(timer);
-          });
-        }
-        this.subs.push(openSubDestroy);
-        this.subs.push(errorSub);
-        return this;
-      }
-      /**
-       * Alias for open()
-       *
-       * @return self
-       * @public
-       */
-    }, {
-      key: "connect",
-      value: function connect(fn) {
-        return this.open(fn);
-      }
-      /**
-       * Called upon transport open.
-       *
-       * @private
-       */
-    }, {
-      key: "onopen",
-      value: function onopen() {
-        // clear old subs
-        this.cleanup();
-        // mark as open
-        this._readyState = "open";
-        this.emitReserved("open");
-        // add new subs
-        var socket = this.engine;
-        this.subs.push(on(socket, "ping", this.onping.bind(this)), on(socket, "data", this.ondata.bind(this)), on(socket, "error", this.onerror.bind(this)), on(socket, "close", this.onclose.bind(this)), on(this.decoder, "decoded", this.ondecoded.bind(this)));
-      }
-      /**
-       * Called upon a ping.
-       *
-       * @private
-       */
-    }, {
-      key: "onping",
-      value: function onping() {
-        this.emitReserved("ping");
-      }
-      /**
-       * Called with data.
-       *
-       * @private
-       */
-    }, {
-      key: "ondata",
-      value: function ondata(data) {
-        try {
-          this.decoder.add(data);
-        } catch (e) {
-          this.onclose("parse error", e);
-        }
-      }
-      /**
-       * Called when parser fully decodes a packet.
-       *
-       * @private
-       */
-    }, {
-      key: "ondecoded",
-      value: function ondecoded(packet) {
-        var _this3 = this;
-        // the nextTick call prevents an exception in a user-provided event listener from triggering a disconnection due to a "parse error"
-        nextTick(function () {
-          _this3.emitReserved("packet", packet);
-        }, this.setTimeoutFn);
-      }
-      /**
-       * Called upon socket error.
-       *
-       * @private
-       */
-    }, {
-      key: "onerror",
-      value: function onerror(err) {
-        this.emitReserved("error", err);
-      }
-      /**
-       * Creates a new socket for the given `nsp`.
-       *
-       * @return {Socket}
-       * @public
-       */
-    }, {
-      key: "socket",
-      value: function socket(nsp, opts) {
-        var socket = this.nsps[nsp];
-        if (!socket) {
-          socket = new Socket(this, nsp, opts);
-          this.nsps[nsp] = socket;
-        } else if (this._autoConnect && !socket.active) {
-          socket.connect();
-        }
-        return socket;
-      }
-      /**
-       * Called upon a socket close.
-       *
-       * @param socket
-       * @private
-       */
-    }, {
-      key: "_destroy",
-      value: function _destroy(socket) {
-        var nsps = Object.keys(this.nsps);
-        for (var _i = 0, _nsps = nsps; _i < _nsps.length; _i++) {
-          var nsp = _nsps[_i];
-          var _socket = this.nsps[nsp];
-          if (_socket.active) {
-            return;
-          }
-        }
-        this._close();
-      }
-      /**
-       * Writes a packet.
-       *
-       * @param packet
-       * @private
-       */
-    }, {
-      key: "_packet",
-      value: function _packet(packet) {
-        var encodedPackets = this.encoder.encode(packet);
-        for (var i = 0; i < encodedPackets.length; i++) {
-          this.engine.write(encodedPackets[i], packet.options);
-        }
-      }
-      /**
-       * Clean up transport subscriptions and packet buffer.
-       *
-       * @private
-       */
-    }, {
-      key: "cleanup",
-      value: function cleanup() {
-        this.subs.forEach(function (subDestroy) {
-          return subDestroy();
-        });
-        this.subs.length = 0;
-        this.decoder.destroy();
-      }
-      /**
-       * Close the current socket.
-       *
-       * @private
-       */
-    }, {
-      key: "_close",
-      value: function _close() {
-        this.skipReconnect = true;
-        this._reconnecting = false;
-        this.onclose("forced close");
-        if (this.engine) this.engine.close();
-      }
-      /**
-       * Alias for close()
-       *
-       * @private
-       */
-    }, {
-      key: "disconnect",
-      value: function disconnect() {
-        return this._close();
-      }
-      /**
-       * Called upon engine close.
-       *
-       * @private
-       */
-    }, {
-      key: "onclose",
-      value: function onclose(reason, description) {
-        this.cleanup();
-        this.backoff.reset();
-        this._readyState = "closed";
-        this.emitReserved("close", reason, description);
-        if (this._reconnection && !this.skipReconnect) {
-          this.reconnect();
-        }
-      }
-      /**
-       * Attempt a reconnection.
-       *
-       * @private
-       */
-    }, {
-      key: "reconnect",
-      value: function reconnect() {
-        var _this4 = this;
-        if (this._reconnecting || this.skipReconnect) return this;
-        var self = this;
-        if (this.backoff.attempts >= this._reconnectionAttempts) {
-          this.backoff.reset();
-          this.emitReserved("reconnect_failed");
-          this._reconnecting = false;
-        } else {
-          var delay = this.backoff.duration();
-          this._reconnecting = true;
-          var timer = this.setTimeoutFn(function () {
-            if (self.skipReconnect) return;
-            _this4.emitReserved("reconnect_attempt", self.backoff.attempts);
-            // check again for the case socket closed in above events
-            if (self.skipReconnect) return;
-            self.open(function (err) {
-              if (err) {
-                self._reconnecting = false;
-                self.reconnect();
-                _this4.emitReserved("reconnect_error", err);
-              } else {
-                self.onreconnect();
-              }
-            });
-          }, delay);
-          if (this.opts.autoUnref) {
-            timer.unref();
-          }
-          this.subs.push(function () {
-            _this4.clearTimeoutFn(timer);
-          });
-        }
-      }
-      /**
-       * Called upon successful reconnect.
-       *
-       * @private
-       */
-    }, {
-      key: "onreconnect",
-      value: function onreconnect() {
-        var attempt = this.backoff.attempts;
-        this._reconnecting = false;
-        this.backoff.reset();
-        this.emitReserved("reconnect", attempt);
-      }
-    }]);
-    return Manager;
-  }(Emitter);
-
-  /**
-   * Managers cache.
-   */
-  var cache = {};
-  function lookup(uri, opts) {
-    if (_typeof(uri) === "object") {
-      opts = uri;
-      uri = undefined;
-    }
-    opts = opts || {};
-    var parsed = url(uri, opts.path || "/socket.io");
-    var source = parsed.source;
-    var id = parsed.id;
-    var path = parsed.path;
-    var sameNamespace = cache[id] && path in cache[id]["nsps"];
-    var newConnection = opts.forceNew || opts["force new connection"] || false === opts.multiplex || sameNamespace;
-    var io;
-    if (newConnection) {
-      io = new Manager(source, opts);
-    } else {
-      if (!cache[id]) {
-        cache[id] = new Manager(source, opts);
-      }
-      io = cache[id];
-    }
-    if (parsed.query && !opts.query) {
-      opts.query = parsed.queryKey;
-    }
-    return io.socket(parsed.path, opts);
-  }
-  // so that "lookup" can be used both as a function (e.g. `io(...)`) and as a
-  // namespace (e.g. `io.connect(...)`), for backward compatibility
-  _extends(lookup, {
-    Manager: Manager,
-    Socket: Socket,
-    io: lookup,
-    connect: lookup
-  });
-
-  return lookup;
-
-}));
-//# sourceMappingURL=socket.io.js.map

npm.json

@@ -25,7 +25,7 @@
   },
   "socket.io": {
     "destination": "static",
-    "keep": ["package/client-dist/socket\\.io(\\.min)?\\.js"],
+    "keep": ["package/client-dist/socket\\.io\\.min\\.js(\\.map)?"],
     "rename": {
       "package/client-dist": ".."
     }