engine.io.js

(function webpackUniversalModuleDefinition(root, factory) {
	if(typeof exports === 'object' && typeof module === 'object')
		module.exports = factory();
	else if(typeof define === 'function' && define.amd)
		define([], factory);
	else if(typeof exports === 'object')
		exports["eio"] = factory();
	else
		root["eio"] = factory();
})(this, function() {
return /******/ (function(modules) { // webpackBootstrap
/******/ 	// The module cache
/******/ 	var installedModules = {};

/******/ 	// The require function
/******/ 	function __webpack_require__(moduleId) {

/******/ 		// Check if module is in cache
/******/ 		if(installedModules[moduleId])
/******/ 			return installedModules[moduleId].exports;

/******/ 		// Create a new module (and put it into the cache)
/******/ 		var module = installedModules[moduleId] = {
/******/ 			exports: {},
/******/ 			id: moduleId,
/******/ 			loaded: false
/******/ 		};

/******/ 		// Execute the module function
/******/ 		modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);

/******/ 		// Flag the module as loaded
/******/ 		module.loaded = true;

/******/ 		// Return the exports of the module
/******/ 		return module.exports;
/******/ 	}


/******/ 	// expose the modules object (__webpack_modules__)
/******/ 	__webpack_require__.m = modules;

/******/ 	// expose the module cache
/******/ 	__webpack_require__.c = installedModules;

/******/ 	// __webpack_public_path__
/******/ 	__webpack_require__.p = "";

/******/ 	// Load entry module and return exports
/******/ 	return __webpack_require__(0);
/******/ })
/************************************************************************/
/******/ ([
/* 0 */
/***/ function(module, exports, __webpack_require__) {

	
	module.exports = __webpack_require__(1);

	/**
	 * Exports parser
	 *
	 * @api public
	 *
	 */
	module.exports.parser = __webpack_require__(9);


/***/ },
/* 1 */
/***/ function(module, exports, __webpack_require__) {

	/**
	 * Module dependencies.
	 */

	var transports = __webpack_require__(2);
	var Emitter = __webpack_require__(18);
	var debug = __webpack_require__(22)('engine.io-client:socket');
	var index = __webpack_require__(29);
	var parser = __webpack_require__(9);
	var parseuri = __webpack_require__(30);
	var parseqs = __webpack_require__(19);

	/**
	 * Module exports.
	 */

	module.exports = Socket;

	/**
	 * Socket constructor.
	 *
	 * @param {String|Object} uri or options
	 * @param {Object} options
	 * @api public
	 */

	function Socket (uri, opts) {
	  if (!(this instanceof Socket)) return new Socket(uri, opts);

	  opts = opts || {};

	  if (uri && 'object' === typeof uri) {
	    opts = uri;
	    uri = null;
	  }

	  if (uri) {
	    uri = parseuri(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 = parseuri(opts.host).host;
	  }

	  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.agent = opts.agent || false;
	  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.query = opts.query || {};
	  if ('string' === typeof this.query) this.query = parseqs.decode(this.query);
	  this.upgrade = false !== opts.upgrade;
	  this.path = (opts.path || '/engine.io').replace(/\/$/, '') + '/';
	  this.forceJSONP = !!opts.forceJSONP;
	  this.jsonp = false !== opts.jsonp;
	  this.forceBase64 = !!opts.forceBase64;
	  this.enablesXDR = !!opts.enablesXDR;
	  this.withCredentials = false !== opts.withCredentials;
	  this.timestampParam = opts.timestampParam || 't';
	  this.timestampRequests = opts.timestampRequests;
	  this.transports = opts.transports || ['polling', 'websocket'];
	  this.transportOptions = opts.transportOptions || {};
	  this.readyState = '';
	  this.writeBuffer = [];
	  this.prevBufferLen = 0;
	  this.policyPort = opts.policyPort || 843;
	  this.rememberUpgrade = opts.rememberUpgrade || false;
	  this.binaryType = null;
	  this.onlyBinaryUpgrades = opts.onlyBinaryUpgrades;
	  this.perMessageDeflate = false !== opts.perMessageDeflate ? (opts.perMessageDeflate || {}) : false;

	  if (true === this.perMessageDeflate) this.perMessageDeflate = {};
	  if (this.perMessageDeflate && null == this.perMessageDeflate.threshold) {
	    this.perMessageDeflate.threshold = 1024;
	  }

	  // SSL options for Node.js client
	  this.pfx = opts.pfx || null;
	  this.key = opts.key || null;
	  this.passphrase = opts.passphrase || null;
	  this.cert = opts.cert || null;
	  this.ca = opts.ca || null;
	  this.ciphers = opts.ciphers || null;
	  this.rejectUnauthorized = opts.rejectUnauthorized === undefined ? true : opts.rejectUnauthorized;
	  this.forceNode = !!opts.forceNode;

	  // detect ReactNative environment
	  this.isReactNative = (typeof navigator !== 'undefined' && typeof navigator.product === 'string' && navigator.product.toLowerCase() === 'reactnative');

	  // other options for Node.js or ReactNative client
	  if (typeof self === 'undefined' || this.isReactNative) {
	    if (opts.extraHeaders && Object.keys(opts.extraHeaders).length > 0) {
	      this.extraHeaders = opts.extraHeaders;
	    }

	    if (opts.localAddress) {
	      this.localAddress = opts.localAddress;
	    }
	  }

	  // set on handshake
	  this.id = null;
	  this.upgrades = null;
	  this.pingInterval = null;
	  this.pingTimeout = null;

	  // set on heartbeat
	  this.pingIntervalTimer = null;
	  this.pingTimeoutTimer = null;

	  this.open();
	}

	Socket.priorWebsocketSuccess = false;

	/**
	 * Mix in `Emitter`.
	 */

	Emitter(Socket.prototype);

	/**
	 * Protocol version.
	 *
	 * @api public
	 */

	Socket.protocol = parser.protocol; // this is an int

	/**
	 * Expose deps for legacy compatibility
	 * and standalone browser access.
	 */

	Socket.Socket = Socket;
	Socket.Transport = __webpack_require__(8);
	Socket.transports = __webpack_require__(2);
	Socket.parser = __webpack_require__(9);

	/**
	 * Creates transport of the given type.
	 *
	 * @param {String} transport name
	 * @return {Transport}
	 * @api private
	 */

	Socket.prototype.createTransport = function (name) {
	  debug('creating transport "%s"', name);
	  var query = clone(this.query);

	  // append engine.io protocol identifier
	  query.EIO = parser.protocol;

	  // transport name
	  query.transport = name;

	  // per-transport options
	  var options = this.transportOptions[name] || {};

	  // session id if we already have one
	  if (this.id) query.sid = this.id;

	  var transport = new transports[name]({
	    query: query,
	    socket: this,
	    agent: options.agent || this.agent,
	    hostname: options.hostname || this.hostname,
	    port: options.port || this.port,
	    secure: options.secure || this.secure,
	    path: options.path || this.path,
	    forceJSONP: options.forceJSONP || this.forceJSONP,
	    jsonp: options.jsonp || this.jsonp,
	    forceBase64: options.forceBase64 || this.forceBase64,
	    enablesXDR: options.enablesXDR || this.enablesXDR,
	    withCredentials: options.withCredentials || this.withCredentials,
	    timestampRequests: options.timestampRequests || this.timestampRequests,
	    timestampParam: options.timestampParam || this.timestampParam,
	    policyPort: options.policyPort || this.policyPort,
	    pfx: options.pfx || this.pfx,
	    key: options.key || this.key,
	    passphrase: options.passphrase || this.passphrase,
	    cert: options.cert || this.cert,
	    ca: options.ca || this.ca,
	    ciphers: options.ciphers || this.ciphers,
	    rejectUnauthorized: options.rejectUnauthorized || this.rejectUnauthorized,
	    perMessageDeflate: options.perMessageDeflate || this.perMessageDeflate,
	    extraHeaders: options.extraHeaders || this.extraHeaders,
	    forceNode: options.forceNode || this.forceNode,
	    localAddress: options.localAddress || this.localAddress,
	    requestTimeout: options.requestTimeout || this.requestTimeout,
	    protocols: options.protocols || void (0),
	    isReactNative: this.isReactNative
	  });

	  return transport;
	};

	function clone (obj) {
	  var o = {};
	  for (var i in obj) {
	    if (obj.hasOwnProperty(i)) {
	      o[i] = obj[i];
	    }
	  }
	  return o;
	}

	/**
	 * Initializes transport to use and starts probe.
	 *
	 * @api private
	 */
	Socket.prototype.open = function () {
	  var transport;
	  if (this.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
	    var self = this;
	    setTimeout(function () {
	      self.emit('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).
	 *
	 * @api private
	 */

	Socket.prototype.setTransport = function (transport) {
	  debug('setting transport %s', transport.name);
	  var self = this;

	  if (this.transport) {
	    debug('clearing existing transport %s', this.transport.name);
	    this.transport.removeAllListeners();
	  }

	  // set up transport
	  this.transport = transport;

	  // set up transport listeners
	  transport
	  .on('drain', function () {
	    self.onDrain();
	  })
	  .on('packet', function (packet) {
	    self.onPacket(packet);
	  })
	  .on('error', function (e) {
	    self.onError(e);
	  })
	  .on('close', function () {
	    self.onClose('transport close');
	  });
	};

	/**
	 * Probes a transport.
	 *
	 * @param {String} transport name
	 * @api private
	 */

	Socket.prototype.probe = function (name) {
	  debug('probing transport "%s"', name);
	  var transport = this.createTransport(name, { probe: 1 });
	  var failed = false;
	  var self = this;

	  Socket.priorWebsocketSuccess = false;

	  function onTransportOpen () {
	    if (self.onlyBinaryUpgrades) {
	      var upgradeLosesBinary = !this.supportsBinary && self.transport.supportsBinary;
	      failed = failed || upgradeLosesBinary;
	    }
	    if (failed) return;

	    debug('probe transport "%s" opened', name);
	    transport.send([{ type: 'ping', data: 'probe' }]);
	    transport.once('packet', function (msg) {
	      if (failed) return;
	      if ('pong' === msg.type && 'probe' === msg.data) {
	        debug('probe transport "%s" pong', name);
	        self.upgrading = true;
	        self.emit('upgrading', transport);
	        if (!transport) return;
	        Socket.priorWebsocketSuccess = 'websocket' === transport.name;

	        debug('pausing current transport "%s"', self.transport.name);
	        self.transport.pause(function () {
	          if (failed) return;
	          if ('closed' === self.readyState) return;
	          debug('changing transport and sending upgrade packet');

	          cleanup();

	          self.setTransport(transport);
	          transport.send([{ type: 'upgrade' }]);
	          self.emit('upgrade', transport);
	          transport = null;
	          self.upgrading = false;
	          self.flush();
	        });
	      } else {
	        debug('probe transport "%s" failed', name);
	        var err = new Error('probe error');
	        err.transport = transport.name;
	        self.emit('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
	  function onerror (err) {
	    var error = new Error('probe error: ' + err);
	    error.transport = transport.name;

	    freezeTransport();

	    debug('probe transport "%s" failed because of error: %s', name, err);

	    self.emit('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) {
	      debug('"%s" works - aborting "%s"', to.name, transport.name);
	      freezeTransport();
	    }
	  }

	  // Remove all listeners on the transport and on self
	  function cleanup () {
	    transport.removeListener('open', onTransportOpen);
	    transport.removeListener('error', onerror);
	    transport.removeListener('close', onTransportClose);
	    self.removeListener('close', onclose);
	    self.removeListener('upgrading', onupgrade);
	  }

	  transport.once('open', onTransportOpen);
	  transport.once('error', onerror);
	  transport.once('close', onTransportClose);

	  this.once('close', onclose);
	  this.once('upgrading', onupgrade);

	  transport.open();
	};

	/**
	 * Called when connection is deemed open.
	 *
	 * @api public
	 */

	Socket.prototype.onOpen = function () {
	  debug('socket open');
	  this.readyState = 'open';
	  Socket.priorWebsocketSuccess = 'websocket' === this.transport.name;
	  this.emit('open');
	  this.flush();

	  // we check for `readyState` in case an `open`
	  // listener already closed the socket
	  if ('open' === this.readyState && this.upgrade && this.transport.pause) {
	    debug('starting upgrade probes');
	    for (var i = 0, l = this.upgrades.length; i < l; i++) {
	      this.probe(this.upgrades[i]);
	    }
	  }
	};

	/**
	 * Handles a packet.
	 *
	 * @api private
	 */

	Socket.prototype.onPacket = function (packet) {
	  if ('opening' === this.readyState || 'open' === this.readyState ||
	      'closing' === this.readyState) {
	    debug('socket receive: type "%s", data "%s"', packet.type, packet.data);

	    this.emit('packet', packet);

	    // Socket is live - any packet counts
	    this.emit('heartbeat');

	    switch (packet.type) {
	      case 'open':
	        this.onHandshake(JSON.parse(packet.data));
	        break;

	      case 'pong':
	        this.setPing();
	        this.emit('pong');
	        break;

	      case 'error':
	        var err = new Error('server error');
	        err.code = packet.data;
	        this.onError(err);
	        break;

	      case 'message':
	        this.emit('data', packet.data);
	        this.emit('message', packet.data);
	        break;
	    }
	  } else {
	    debug('packet received with socket readyState "%s"', this.readyState);
	  }
	};

	/**
	 * Called upon handshake completion.
	 *
	 * @param {Object} handshake obj
	 * @api private
	 */

	Socket.prototype.onHandshake = function (data) {
	  this.emit('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.onOpen();
	  // In case open handler closes socket
	  if ('closed' === this.readyState) return;
	  this.setPing();

	  // Prolong liveness of socket on heartbeat
	  this.removeListener('heartbeat', this.onHeartbeat);
	  this.on('heartbeat', this.onHeartbeat);
	};

	/**
	 * Resets ping timeout.
	 *
	 * @api private
	 */

	Socket.prototype.onHeartbeat = function (timeout) {
	  clearTimeout(this.pingTimeoutTimer);
	  var self = this;
	  self.pingTimeoutTimer = setTimeout(function () {
	    if ('closed' === self.readyState) return;
	    self.onClose('ping timeout');
	  }, timeout || (self.pingInterval + self.pingTimeout));
	};

	/**
	 * Pings server every `this.pingInterval` and expects response
	 * within `this.pingTimeout` or closes connection.
	 *
	 * @api private
	 */

	Socket.prototype.setPing = function () {
	  var self = this;
	  clearTimeout(self.pingIntervalTimer);
	  self.pingIntervalTimer = setTimeout(function () {
	    debug('writing ping packet - expecting pong within %sms', self.pingTimeout);
	    self.ping();
	    self.onHeartbeat(self.pingTimeout);
	  }, self.pingInterval);
	};

	/**
	* Sends a ping packet.
	*
	* @api private
	*/

	Socket.prototype.ping = function () {
	  var self = this;
	  this.sendPacket('ping', function () {
	    self.emit('ping');
	  });
	};

	/**
	 * Called on `drain` event
	 *
	 * @api private
	 */

	Socket.prototype.onDrain = function () {
	  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.emit('drain');
	  } else {
	    this.flush();
	  }
	};

	/**
	 * Flush write buffers.
	 *
	 * @api private
	 */

	Socket.prototype.flush = function () {
	  if ('closed' !== this.readyState && this.transport.writable &&
	    !this.upgrading && this.writeBuffer.length) {
	    debug('flushing %d packets in socket', this.writeBuffer.length);
	    this.transport.send(this.writeBuffer);
	    // keep track of current length of writeBuffer
	    // splice writeBuffer and callbackBuffer on `drain`
	    this.prevBufferLen = this.writeBuffer.length;
	    this.emit('flush');
	  }
	};

	/**
	 * Sends a message.
	 *
	 * @param {String} message.
	 * @param {Function} callback function.
	 * @param {Object} options.
	 * @return {Socket} for chaining.
	 * @api public
	 */

	Socket.prototype.write =
	Socket.prototype.send = function (msg, options, fn) {
	  this.sendPacket('message', msg, options, fn);
	  return this;
	};

	/**
	 * Sends a packet.
	 *
	 * @param {String} packet type.
	 * @param {String} data.
	 * @param {Object} options.
	 * @param {Function} callback function.
	 * @api private
	 */

	Socket.prototype.sendPacket = function (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.emit('packetCreate', packet);
	  this.writeBuffer.push(packet);
	  if (fn) this.once('flush', fn);
	  this.flush();
	};

	/**
	 * Closes the connection.
	 *
	 * @api private
	 */

	Socket.prototype.close = function () {
	  if ('opening' === this.readyState || 'open' === this.readyState) {
	    this.readyState = 'closing';

	    var self = this;

	    if (this.writeBuffer.length) {
	      this.once('drain', function () {
	        if (this.upgrading) {
	          waitForUpgrade();
	        } else {
	          close();
	        }
	      });
	    } else if (this.upgrading) {
	      waitForUpgrade();
	    } else {
	      close();
	    }
	  }

	  function close () {
	    self.onClose('forced close');
	    debug('socket closing - telling transport to close');
	    self.transport.close();
	  }

	  function cleanupAndClose () {
	    self.removeListener('upgrade', cleanupAndClose);
	    self.removeListener('upgradeError', cleanupAndClose);
	    close();
	  }

	  function waitForUpgrade () {
	    // wait for upgrade to finish since we can't send packets while pausing a transport
	    self.once('upgrade', cleanupAndClose);
	    self.once('upgradeError', cleanupAndClose);
	  }

	  return this;
	};

	/**
	 * Called upon transport error
	 *
	 * @api private
	 */

	Socket.prototype.onError = function (err) {
	  debug('socket error %j', err);
	  Socket.priorWebsocketSuccess = false;
	  this.emit('error', err);
	  this.onClose('transport error', err);
	};

	/**
	 * Called upon transport close.
	 *
	 * @api private
	 */

	Socket.prototype.onClose = function (reason, desc) {
	  if ('opening' === this.readyState || 'open' === this.readyState || 'closing' === this.readyState) {
	    debug('socket close with reason: "%s"', reason);
	    var self = this;

	    // clear timers
	    clearTimeout(this.pingIntervalTimer);
	    clearTimeout(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();

	    // set ready state
	    this.readyState = 'closed';

	    // clear session id
	    this.id = null;

	    // emit close event
	    this.emit('close', reason, desc);

	    // clean buffers after, so users can still
	    // grab the buffers on `close` event
	    self.writeBuffer = [];
	    self.prevBufferLen = 0;
	  }
	};

	/**
	 * Filters upgrades, returning only those matching client transports.
	 *
	 * @param {Array} server upgrades
	 * @api private
	 *
	 */

	Socket.prototype.filterUpgrades = function (upgrades) {
	  var filteredUpgrades = [];
	  for (var i = 0, j = upgrades.length; i < j; i++) {
	    if (~index(this.transports, upgrades[i])) filteredUpgrades.push(upgrades[i]);
	  }
	  return filteredUpgrades;
	};


/***/ },
/* 2 */
/***/ function(module, exports, __webpack_require__) {

	/**
	 * Module dependencies
	 */

	var XMLHttpRequest = __webpack_require__(3);
	var XHR = __webpack_require__(6);
	var JSONP = __webpack_require__(26);
	var websocket = __webpack_require__(27);

	/**
	 * Export transports.
	 */

	exports.polling = polling;
	exports.websocket = websocket;

	/**
	 * Polling transport polymorphic constructor.
	 * Decides on xhr vs jsonp based on feature detection.
	 *
	 * @api private
	 */

	function polling (opts) {
	  var xhr;
	  var xd = false;
	  var xs = false;
	  var jsonp = false !== opts.jsonp;

	  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;
	    }

	    xd = opts.hostname !== location.hostname || port !== opts.port;
	    xs = opts.secure !== isSSL;
	  }

	  opts.xdomain = xd;
	  opts.xscheme = xs;
	  xhr = new XMLHttpRequest(opts);

	  if ('open' in xhr && !opts.forceJSONP) {
	    return new XHR(opts);
	  } else {
	    if (!jsonp) throw new Error('JSONP disabled');
	    return new JSONP(opts);
	  }
	}


/***/ },
/* 3 */
/***/ function(module, exports, __webpack_require__) {

	// browser shim for xmlhttprequest module

	var hasCORS = __webpack_require__(4);
	var globalThis = __webpack_require__(5);

	module.exports = function (opts) {
	  var xdomain = opts.xdomain;

	  // scheme must be same when usign XDomainRequest
	  // http://blogs.msdn.com/b/ieinternals/archive/2010/05/13/xdomainrequest-restrictions-limitations-and-workarounds.aspx
	  var xscheme = opts.xscheme;

	  // XDomainRequest has a flow of not sending cookie, therefore it should be disabled as a default.
	  // https://github.com/Automattic/engine.io-client/pull/217
	  var enablesXDR = opts.enablesXDR;

	  // XMLHttpRequest can be disabled on IE
	  try {
	    if ('undefined' !== typeof XMLHttpRequest && (!xdomain || hasCORS)) {
	      return new XMLHttpRequest();
	    }
	  } catch (e) { }

	  // Use XDomainRequest for IE8 if enablesXDR is true
	  // because loading bar keeps flashing when using jsonp-polling
	  // https://github.com/yujiosaka/socke.io-ie8-loading-example
	  try {
	    if ('undefined' !== typeof XDomainRequest && !xscheme && enablesXDR) {
	      return new XDomainRequest();
	    }
	  } catch (e) { }

	  if (!xdomain) {
	    try {
	      return new globalThis[['Active'].concat('Object').join('X')]('Microsoft.XMLHTTP');
	    } catch (e) { }
	  }
	};


/***/ },
/* 4 */
/***/ function(module, exports) {

	
	/**
	 * Module exports.
	 *
	 * Logic borrowed from Modernizr:
	 *
	 *   - https://github.com/Modernizr/Modernizr/blob/master/feature-detects/cors.js
	 */

	try {
	  module.exports = typeof XMLHttpRequest !== 'undefined' &&
	    'withCredentials' in new XMLHttpRequest();
	} catch (err) {
	  // if XMLHttp support is disabled in IE then it will throw
	  // when trying to create
	  module.exports = false;
	}


/***/ },
/* 5 */
/***/ function(module, exports) {

	module.exports = (function () {
	  if (typeof self !== 'undefined') {
	    return self;
	  } else if (typeof window !== 'undefined') {
	    return window;
	  } else {
	    return Function('return this')(); // eslint-disable-line no-new-func
	  }
	})();


/***/ },
/* 6 */
/***/ function(module, exports, __webpack_require__) {

	/* global attachEvent */

	/**
	 * Module requirements.
	 */

	var XMLHttpRequest = __webpack_require__(3);
	var Polling = __webpack_require__(7);
	var Emitter = __webpack_require__(18);
	var inherit = __webpack_require__(20);
	var debug = __webpack_require__(22)('engine.io-client:polling-xhr');
	var globalThis = __webpack_require__(5);

	/**
	 * Module exports.
	 */

	module.exports = XHR;
	module.exports.Request = Request;

	/**
	 * Empty function
	 */

	function empty () {}

	/**
	 * XHR Polling constructor.
	 *
	 * @param {Object} opts
	 * @api public
	 */

	function XHR (opts) {
	  Polling.call(this, opts);
	  this.requestTimeout = opts.requestTimeout;
	  this.extraHeaders = opts.extraHeaders;

	  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;
	    this.xs = opts.secure !== isSSL;
	  }
	}

	/**
	 * Inherits from Polling.
	 */

	inherit(XHR, Polling);

	/**
	 * XHR supports binary
	 */

	XHR.prototype.supportsBinary = true;

	/**
	 * Creates a request.
	 *
	 * @param {String} method
	 * @api private
	 */

	XHR.prototype.request = function (opts) {
	  opts = opts || {};
	  opts.uri = this.uri();
	  opts.xd = this.xd;
	  opts.xs = this.xs;
	  opts.agent = this.agent || false;
	  opts.supportsBinary = this.supportsBinary;
	  opts.enablesXDR = this.enablesXDR;
	  opts.withCredentials = this.withCredentials;

	  // SSL options for Node.js client
	  opts.pfx = this.pfx;
	  opts.key = this.key;
	  opts.passphrase = this.passphrase;
	  opts.cert = this.cert;
	  opts.ca = this.ca;
	  opts.ciphers = this.ciphers;
	  opts.rejectUnauthorized = this.rejectUnauthorized;
	  opts.requestTimeout = this.requestTimeout;

	  // other options for Node.js client
	  opts.extraHeaders = this.extraHeaders;

	  return new Request(opts);
	};

	/**
	 * Sends data.
	 *
	 * @param {String} data to send.
	 * @param {Function} called upon flush.
	 * @api private
	 */

	XHR.prototype.doWrite = function (data, fn) {
	  var isBinary = typeof data !== 'string' && data !== undefined;
	  var req = this.request({ method: 'POST', data: data, isBinary: isBinary });
	  var self = this;
	  req.on('success', fn);
	  req.on('error', function (err) {
	    self.onError('xhr post error', err);
	  });
	  this.sendXhr = req;
	};

	/**
	 * Starts a poll cycle.
	 *
	 * @api private
	 */

	XHR.prototype.doPoll = function () {
	  debug('xhr poll');
	  var req = this.request();
	  var self = this;
	  req.on('data', function (data) {
	    self.onData(data);
	  });
	  req.on('error', function (err) {
	    self.onError('xhr poll error', err);
	  });
	  this.pollXhr = req;
	};

	/**
	 * Request constructor
	 *
	 * @param {Object} options
	 * @api public
	 */

	function Request (opts) {
	  this.method = opts.method || 'GET';
	  this.uri = opts.uri;
	  this.xd = !!opts.xd;
	  this.xs = !!opts.xs;
	  this.async = false !== opts.async;
	  this.data = undefined !== opts.data ? opts.data : null;
	  this.agent = opts.agent;
	  this.isBinary = opts.isBinary;
	  this.supportsBinary = opts.supportsBinary;
	  this.enablesXDR = opts.enablesXDR;
	  this.withCredentials = opts.withCredentials;
	  this.requestTimeout = opts.requestTimeout;

	  // SSL options for Node.js client
	  this.pfx = opts.pfx;
	  this.key = opts.key;
	  this.passphrase = opts.passphrase;
	  this.cert = opts.cert;
	  this.ca = opts.ca;
	  this.ciphers = opts.ciphers;
	  this.rejectUnauthorized = opts.rejectUnauthorized;

	  // other options for Node.js client
	  this.extraHeaders = opts.extraHeaders;

	  this.create();
	}

	/**
	 * Mix in `Emitter`.
	 */

	Emitter(Request.prototype);

	/**
	 * Creates the XHR object and sends the request.
	 *
	 * @api private
	 */

	Request.prototype.create = function () {
	  var opts = { agent: this.agent, xdomain: this.xd, xscheme: this.xs, enablesXDR: this.enablesXDR };

	  // SSL options for Node.js client
	  opts.pfx = this.pfx;
	  opts.key = this.key;
	  opts.passphrase = this.passphrase;
	  opts.cert = this.cert;
	  opts.ca = this.ca;
	  opts.ciphers = this.ciphers;
	  opts.rejectUnauthorized = this.rejectUnauthorized;

	  var xhr = this.xhr = new XMLHttpRequest(opts);
	  var self = this;

	  try {
	    debug('xhr open %s: %s', this.method, this.uri);
	    xhr.open(this.method, this.uri, this.async);
	    try {
	      if (this.extraHeaders) {
	        xhr.setDisableHeaderCheck && xhr.setDisableHeaderCheck(true);
	        for (var i in this.extraHeaders) {
	          if (this.extraHeaders.hasOwnProperty(i)) {
	            xhr.setRequestHeader(i, this.extraHeaders[i]);
	          }
	        }
	      }
	    } catch (e) {}

	    if ('POST' === this.method) {
	      try {
	        if (this.isBinary) {
	          xhr.setRequestHeader('Content-type', 'application/octet-stream');
	        } else {
	          xhr.setRequestHeader('Content-type', 'text/plain;charset=UTF-8');
	        }
	      } catch (e) {}
	    }

	    try {
	      xhr.setRequestHeader('Accept', '*/*');
	    } catch (e) {}

	    // ie6 check
	    if ('withCredentials' in xhr) {
	      xhr.withCredentials = this.withCredentials;
	    }

	    if (this.requestTimeout) {
	      xhr.timeout = this.requestTimeout;
	    }

	    if (this.hasXDR()) {
	      xhr.onload = function () {
	        self.onLoad();
	      };
	      xhr.onerror = function () {
	        self.onError(xhr.responseText);
	      };
	    } else {
	      xhr.onreadystatechange = function () {
	        if (xhr.readyState === 2) {
	          try {
	            var contentType = xhr.getResponseHeader('Content-Type');
	            if (self.supportsBinary && contentType === 'application/octet-stream' || contentType === 'application/octet-stream; charset=UTF-8') {
	              xhr.responseType = 'arraybuffer';
	            }
	          } catch (e) {}
	        }
	        if (4 !== xhr.readyState) return;
	        if (200 === xhr.status || 1223 === xhr.status) {
	          self.onLoad();
	        } else {
	          // make sure the `error` event handler that's user-set
	          // does not throw in the same tick and gets caught here
	          setTimeout(function () {
	            self.onError(typeof xhr.status === 'number' ? xhr.status : 0);
	          }, 0);
	        }
	      };
	    }

	    debug('xhr data %s', this.data);
	    xhr.send(this.data);
	  } catch (e) {
	    // Need to defer since .create() is called directly fhrom the constructor
	    // and thus the 'error' event can only be only bound *after* this exception
	    // occurs.  Therefore, also, we cannot throw here at all.
	    setTimeout(function () {
	      self.onError(e);
	    }, 0);
	    return;
	  }

	  if (typeof document !== 'undefined') {
	    this.index = Request.requestsCount++;
	    Request.requests[this.index] = this;
	  }
	};

	/**
	 * Called upon successful response.
	 *
	 * @api private
	 */

	Request.prototype.onSuccess = function () {
	  this.emit('success');
	  this.cleanup();
	};

	/**
	 * Called if we have data.
	 *
	 * @api private
	 */

	Request.prototype.onData = function (data) {
	  this.emit('data', data);
	  this.onSuccess();
	};

	/**
	 * Called upon error.
	 *
	 * @api private
	 */

	Request.prototype.onError = function (err) {
	  this.emit('error', err);
	  this.cleanup(true);
	};

	/**
	 * Cleans up house.
	 *
	 * @api private
	 */

	Request.prototype.cleanup = function (fromError) {
	  if ('undefined' === typeof this.xhr || null === this.xhr) {
	    return;
	  }
	  // xmlhttprequest
	  if (this.hasXDR()) {
	    this.xhr.onload = this.xhr.onerror = empty;
	  } else {
	    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.
	 *
	 * @api private
	 */

	Request.prototype.onLoad = function () {
	  var data;
	  try {
	    var contentType;
	    try {
	      contentType = this.xhr.getResponseHeader('Content-Type');
	    } catch (e) {}
	    if (contentType === 'application/octet-stream' || contentType === 'application/octet-stream; charset=UTF-8') {
	      data = this.xhr.response || this.xhr.responseText;
	    } else {
	      data = this.xhr.responseText;
	    }
	  } catch (e) {
	    this.onError(e);
	  }
	  if (null != data) {
	    this.onData(data);
	  }
	};

	/**
	 * Check if it has XDomainRequest.
	 *
	 * @api private
	 */

	Request.prototype.hasXDR = function () {
	  return typeof XDomainRequest !== 'undefined' && !this.xs && this.enablesXDR;
	};

	/**
	 * Aborts the request.
	 *
	 * @api public
	 */

	Request.prototype.abort = function () {
	  this.cleanup();
	};

	/**
	 * 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.
	 */

	Request.requestsCount = 0;
	Request.requests = {};

	if (typeof document !== 'undefined') {
	  if (typeof attachEvent === 'function') {
	    attachEvent('onunload', unloadHandler);
	  } else if (typeof addEventListener === 'function') {
	    var terminationEvent = 'onpagehide' in globalThis ? 'pagehide' : 'unload';
	    addEventListener(terminationEvent, unloadHandler, false);
	  }
	}

	function unloadHandler () {
	  for (var i in Request.requests) {
	    if (Request.requests.hasOwnProperty(i)) {
	      Request.requests[i].abort();
	    }
	  }
	}


/***/ },
/* 7 */
/***/ function(module, exports, __webpack_require__) {

	/**
	 * Module dependencies.
	 */

	var Transport = __webpack_require__(8);
	var parseqs = __webpack_require__(19);
	var parser = __webpack_require__(9);
	var inherit = __webpack_require__(20);
	var yeast = __webpack_require__(21);
	var debug = __webpack_require__(22)('engine.io-client:polling');

	/**
	 * Module exports.
	 */

	module.exports = Polling;

	/**
	 * Is XHR2 supported?
	 */

	var hasXHR2 = (function () {
	  var XMLHttpRequest = __webpack_require__(3);
	  var xhr = new XMLHttpRequest({ xdomain: false });
	  return null != xhr.responseType;
	})();

	/**
	 * Polling interface.
	 *
	 * @param {Object} opts
	 * @api private
	 */

	function Polling (opts) {
	  var forceBase64 = (opts && opts.forceBase64);
	  if (!hasXHR2 || forceBase64) {
	    this.supportsBinary = false;
	  }
	  Transport.call(this, opts);
	}

	/**
	 * Inherits from Transport.
	 */

	inherit(Polling, Transport);

	/**
	 * Transport name.
	 */

	Polling.prototype.name = 'polling';

	/**
	 * Opens the socket (triggers polling). We write a PING message to determine
	 * when the transport is open.
	 *
	 * @api private
	 */

	Polling.prototype.doOpen = function () {
	  this.poll();
	};

	/**
	 * Pauses polling.
	 *
	 * @param {Function} callback upon buffers are flushed and transport is paused
	 * @api private
	 */

	Polling.prototype.pause = function (onPause) {
	  var self = this;

	  this.readyState = 'pausing';

	  function pause () {
	    debug('paused');
	    self.readyState = 'paused';
	    onPause();
	  }

	  if (this.polling || !this.writable) {
	    var total = 0;

	    if (this.polling) {
	      debug('we are currently polling - waiting to pause');
	      total++;
	      this.once('pollComplete', function () {
	        debug('pre-pause polling complete');
	        --total || pause();
	      });
	    }

	    if (!this.writable) {
	      debug('we are currently writing - waiting to pause');
	      total++;
	      this.once('drain', function () {
	        debug('pre-pause writing complete');
	        --total || pause();
	      });
	    }
	  } else {
	    pause();
	  }
	};

	/**
	 * Starts polling cycle.
	 *
	 * @api public
	 */

	Polling.prototype.poll = function () {
	  debug('polling');
	  this.polling = true;
	  this.doPoll();
	  this.emit('poll');
	};

	/**
	 * Overloads onData to detect payloads.
	 *
	 * @api private
	 */

	Polling.prototype.onData = function (data) {
	  var self = this;
	  debug('polling got data %s', data);
	  var callback = function (packet, index, total) {
	    // if its the first message we consider the transport open
	    if ('opening' === self.readyState) {
	      self.onOpen();
	    }

	    // if its a close packet, we close the ongoing requests
	    if ('close' === packet.type) {
	      self.onClose();
	      return false;
	    }

	    // otherwise bypass onData and handle the message
	    self.onPacket(packet);
	  };

	  // decode payload
	  parser.decodePayload(data, this.socket.binaryType, callback);

	  // if an event did not trigger closing
	  if ('closed' !== this.readyState) {
	    // if we got data we're not polling
	    this.polling = false;
	    this.emit('pollComplete');

	    if ('open' === this.readyState) {
	      this.poll();
	    } else {
	      debug('ignoring poll - transport state "%s"', this.readyState);
	    }
	  }
	};

	/**
	 * For polling, send a close packet.
	 *
	 * @api private
	 */

	Polling.prototype.doClose = function () {
	  var self = this;

	  function close () {
	    debug('writing close packet');
	    self.write([{ type: 'close' }]);
	  }

	  if ('open' === this.readyState) {
	    debug('transport open - closing');
	    close();
	  } else {
	    // in case we're trying to close while
	    // handshaking is in progress (GH-164)
	    debug('transport not open - deferring close');
	    this.once('open', close);
	  }
	};

	/**
	 * Writes a packets payload.
	 *
	 * @param {Array} data packets
	 * @param {Function} drain callback
	 * @api private
	 */

	Polling.prototype.write = function (packets) {
	  var self = this;
	  this.writable = false;
	  var callbackfn = function () {
	    self.writable = true;
	    self.emit('drain');
	  };

	  parser.encodePayload(packets, this.supportsBinary, function (data) {
	    self.doWrite(data, callbackfn);
	  });
	};

	/**
	 * Generates uri for connection.
	 *
	 * @api private
	 */

	Polling.prototype.uri = function () {
	  var query = this.query || {};
	  var schema = this.secure ? 'https' : 'http';
	  var port = '';

	  // cache busting is forced
	  if (false !== this.timestampRequests) {
	    query[this.timestampParam] = yeast();
	  }

	  if (!this.supportsBinary && !query.sid) {
	    query.b64 = 1;
	  }

	  query = parseqs.encode(query);

	  // avoid port if default for schema
	  if (this.port && (('https' === schema && Number(this.port) !== 443) ||
	     ('http' === schema && Number(this.port) !== 80))) {
	    port = ':' + this.port;
	  }

	  // prepend ? to query
	  if (query.length) {
	    query = '?' + query;
	  }

	  var ipv6 = this.hostname.indexOf(':') !== -1;
	  return schema + '://' + (ipv6 ? '[' + this.hostname + ']' : this.hostname) + port + this.path + query;
	};


/***/ },
/* 8 */
/***/ function(module, exports, __webpack_require__) {

	/**
	 * Module dependencies.
	 */

	var parser = __webpack_require__(9);
	var Emitter = __webpack_require__(18);

	/**
	 * Module exports.
	 */

	module.exports = Transport;

	/**
	 * Transport abstract constructor.
	 *
	 * @param {Object} options.
	 * @api private
	 */

	function Transport (opts) {
	  this.path = opts.path;
	  this.hostname = opts.hostname;
	  this.port = opts.port;
	  this.secure = opts.secure;
	  this.query = opts.query;
	  this.timestampParam = opts.timestampParam;
	  this.timestampRequests = opts.timestampRequests;
	  this.readyState = '';
	  this.agent = opts.agent || false;
	  this.socket = opts.socket;
	  this.enablesXDR = opts.enablesXDR;
	  this.withCredentials = opts.withCredentials;

	  // SSL options for Node.js client
	  this.pfx = opts.pfx;
	  this.key = opts.key;
	  this.passphrase = opts.passphrase;
	  this.cert = opts.cert;
	  this.ca = opts.ca;
	  this.ciphers = opts.ciphers;
	  this.rejectUnauthorized = opts.rejectUnauthorized;
	  this.forceNode = opts.forceNode;

	  // results of ReactNative environment detection
	  this.isReactNative = opts.isReactNative;

	  // other options for Node.js client
	  this.extraHeaders = opts.extraHeaders;
	  this.localAddress = opts.localAddress;
	}

	/**
	 * Mix in `Emitter`.
	 */

	Emitter(Transport.prototype);

	/**
	 * Emits an error.
	 *
	 * @param {String} str
	 * @return {Transport} for chaining
	 * @api public
	 */

	Transport.prototype.onError = function (msg, desc) {
	  var err = new Error(msg);
	  err.type = 'TransportError';
	  err.description = desc;
	  this.emit('error', err);
	  return this;
	};

	/**
	 * Opens the transport.
	 *
	 * @api public
	 */

	Transport.prototype.open = function () {
	  if ('closed' === this.readyState || '' === this.readyState) {
	    this.readyState = 'opening';
	    this.doOpen();
	  }

	  return this;
	};

	/**
	 * Closes the transport.
	 *
	 * @api private
	 */

	Transport.prototype.close = function () {
	  if ('opening' === this.readyState || 'open' === this.readyState) {
	    this.doClose();
	    this.onClose();
	  }

	  return this;
	};

	/**
	 * Sends multiple packets.
	 *
	 * @param {Array} packets
	 * @api private
	 */

	Transport.prototype.send = function (packets) {
	  if ('open' === this.readyState) {
	    this.write(packets);
	  } else {
	    throw new Error('Transport not open');
	  }
	};

	/**
	 * Called upon open
	 *
	 * @api private
	 */

	Transport.prototype.onOpen = function () {
	  this.readyState = 'open';
	  this.writable = true;
	  this.emit('open');
	};

	/**
	 * Called with data.
	 *
	 * @param {String} data
	 * @api private
	 */

	Transport.prototype.onData = function (data) {
	  var packet = parser.decodePacket(data, this.socket.binaryType);
	  this.onPacket(packet);
	};

	/**
	 * Called with a decoded packet.
	 */

	Transport.prototype.onPacket = function (packet) {
	  this.emit('packet', packet);
	};

	/**
	 * Called upon close.
	 *
	 * @api private
	 */

	Transport.prototype.onClose = function () {
	  this.readyState = 'closed';
	  this.emit('close');
	};


/***/ },
/* 9 */
/***/ function(module, exports, __webpack_require__) {

	/**
	 * Module dependencies.
	 */

	var keys = __webpack_require__(10);
	var hasBinary = __webpack_require__(11);
	var sliceBuffer = __webpack_require__(13);
	var after = __webpack_require__(14);
	var utf8 = __webpack_require__(15);

	var base64encoder;
	if (typeof ArrayBuffer !== 'undefined') {
	  base64encoder = __webpack_require__(16);
	}

	/**
	 * Check if we are running an android browser. That requires us to use
	 * ArrayBuffer with polling transports...
	 *
	 * http://ghinda.net/jpeg-blob-ajax-android/
	 */

	var isAndroid = typeof navigator !== 'undefined' && /Android/i.test(navigator.userAgent);

	/**
	 * Check if we are running in PhantomJS.
	 * Uploading a Blob with PhantomJS does not work correctly, as reported here:
	 * https://github.com/ariya/phantomjs/issues/11395
	 * @type boolean
	 */
	var isPhantomJS = typeof navigator !== 'undefined' && /PhantomJS/i.test(navigator.userAgent);

	/**
	 * When true, avoids using Blobs to encode payloads.
	 * @type boolean
	 */
	var dontSendBlobs = isAndroid || isPhantomJS;

	/**
	 * Current protocol version.
	 */

	exports.protocol = 3;

	/**
	 * Packet types.
	 */

	var packets = exports.packets = {
	    open:     0    // non-ws
	  , close:    1    // non-ws
	  , ping:     2
	  , pong:     3
	  , message:  4
	  , upgrade:  5
	  , noop:     6
	};

	var packetslist = keys(packets);

	/**
	 * Premade error packet.
	 */

	var err = { type: 'error', data: 'parser error' };

	/**
	 * Create a blob api even for blob builder when vendor prefixes exist
	 */

	var Blob = __webpack_require__(17);

	/**
	 * Encodes a packet.
	 *
	 *     <packet type id> [ <data> ]
	 *
	 * Example:
	 *
	 *     5hello world
	 *     3
	 *     4
	 *
	 * Binary is encoded in an identical principle
	 *
	 * @api private
	 */

	exports.encodePacket = function (packet, supportsBinary, utf8encode, callback) {
	  if (typeof supportsBinary === 'function') {
	    callback = supportsBinary;
	    supportsBinary = false;
	  }

	  if (typeof utf8encode === 'function') {
	    callback = utf8encode;
	    utf8encode = null;
	  }

	  var data = (packet.data === undefined)
	    ? undefined
	    : packet.data.buffer || packet.data;

	  if (typeof ArrayBuffer !== 'undefined' && data instanceof ArrayBuffer) {
	    return encodeArrayBuffer(packet, supportsBinary, callback);
	  } else if (typeof Blob !== 'undefined' && data instanceof Blob) {
	    return encodeBlob(packet, supportsBinary, callback);
	  }

	  // might be an object with { base64: true, data: dataAsBase64String }
	  if (data && data.base64) {
	    return encodeBase64Object(packet, callback);
	  }

	  // Sending data as a utf-8 string
	  var encoded = packets[packet.type];

	  // data fragment is optional
	  if (undefined !== packet.data) {
	    encoded += utf8encode ? utf8.encode(String(packet.data), { strict: false }) : String(packet.data);
	  }

	  return callback('' + encoded);

	};

	function encodeBase64Object(packet, callback) {
	  // packet data is an object { base64: true, data: dataAsBase64String }
	  var message = 'b' + exports.packets[packet.type] + packet.data.data;
	  return callback(message);
	}

	/**
	 * Encode packet helpers for binary types
	 */

	function encodeArrayBuffer(packet, supportsBinary, callback) {
	  if (!supportsBinary) {
	    return exports.encodeBase64Packet(packet, callback);
	  }

	  var data = packet.data;
	  var contentArray = new Uint8Array(data);
	  var resultBuffer = new Uint8Array(1 + data.byteLength);

	  resultBuffer[0] = packets[packet.type];
	  for (var i = 0; i < contentArray.length; i++) {
	    resultBuffer[i+1] = contentArray[i];
	  }

	  return callback(resultBuffer.buffer);
	}

	function encodeBlobAsArrayBuffer(packet, supportsBinary, callback) {
	  if (!supportsBinary) {
	    return exports.encodeBase64Packet(packet, callback);
	  }

	  var fr = new FileReader();
	  fr.onload = function() {
	    exports.encodePacket({ type: packet.type, data: fr.result }, supportsBinary, true, callback);
	  };
	  return fr.readAsArrayBuffer(packet.data);
	}

	function encodeBlob(packet, supportsBinary, callback) {
	  if (!supportsBinary) {
	    return exports.encodeBase64Packet(packet, callback);
	  }

	  if (dontSendBlobs) {
	    return encodeBlobAsArrayBuffer(packet, supportsBinary, callback);
	  }

	  var length = new Uint8Array(1);
	  length[0] = packets[packet.type];
	  var blob = new Blob([length.buffer, packet.data]);

	  return callback(blob);
	}

	/**
	 * Encodes a packet with binary data in a base64 string
	 *
	 * @param {Object} packet, has `type` and `data`
	 * @return {String} base64 encoded message
	 */

	exports.encodeBase64Packet = function(packet, callback) {
	  var message = 'b' + exports.packets[packet.type];
	  if (typeof Blob !== 'undefined' && packet.data instanceof Blob) {
	    var fr = new FileReader();
	    fr.onload = function() {
	      var b64 = fr.result.split(',')[1];
	      callback(message + b64);
	    };
	    return fr.readAsDataURL(packet.data);
	  }

	  var b64data;
	  try {
	    b64data = String.fromCharCode.apply(null, new Uint8Array(packet.data));
	  } catch (e) {
	    // iPhone Safari doesn't let you apply with typed arrays
	    var typed = new Uint8Array(packet.data);
	    var basic = new Array(typed.length);
	    for (var i = 0; i < typed.length; i++) {
	      basic[i] = typed[i];
	    }
	    b64data = String.fromCharCode.apply(null, basic);
	  }
	  message += btoa(b64data);
	  return callback(message);
	};

	/**
	 * Decodes a packet. Changes format to Blob if requested.
	 *
	 * @return {Object} with `type` and `data` (if any)
	 * @api private
	 */

	exports.decodePacket = function (data, binaryType, utf8decode) {
	  if (data === undefined) {
	    return err;
	  }
	  // String data
	  if (typeof data === 'string') {
	    if (data.charAt(0) === 'b') {
	      return exports.decodeBase64Packet(data.substr(1), binaryType);
	    }

	    if (utf8decode) {
	      data = tryDecode(data);
	      if (data === false) {
	        return err;
	      }
	    }
	    var type = data.charAt(0);

	    if (Number(type) != type || !packetslist[type]) {
	      return err;
	    }

	    if (data.length > 1) {
	      return { type: packetslist[type], data: data.substring(1) };
	    } else {
	      return { type: packetslist[type] };
	    }
	  }

	  var asArray = new Uint8Array(data);
	  var type = asArray[0];
	  var rest = sliceBuffer(data, 1);
	  if (Blob && binaryType === 'blob') {
	    rest = new Blob([rest]);
	  }
	  return { type: packetslist[type], data: rest };
	};

	function tryDecode(data) {
	  try {
	    data = utf8.decode(data, { strict: false });
	  } catch (e) {
	    return false;
	  }
	  return data;
	}

	/**
	 * Decodes a packet encoded in a base64 string
	 *
	 * @param {String} base64 encoded message
	 * @return {Object} with `type` and `data` (if any)
	 */

	exports.decodeBase64Packet = function(msg, binaryType) {
	  var type = packetslist[msg.charAt(0)];
	  if (!base64encoder) {
	    return { type: type, data: { base64: true, data: msg.substr(1) } };
	  }

	  var data = base64encoder.decode(msg.substr(1));

	  if (binaryType === 'blob' && Blob) {
	    data = new Blob([data]);
	  }

	  return { type: type, data: data };
	};

	/**
	 * Encodes multiple messages (payload).
	 *
	 *     <length>:data
	 *
	 * Example:
	 *
	 *     11:hello world2:hi
	 *
	 * If any contents are binary, they will be encoded as base64 strings. Base64
	 * encoded strings are marked with a b before the length specifier
	 *
	 * @param {Array} packets
	 * @api private
	 */

	exports.encodePayload = function (packets, supportsBinary, callback) {
	  if (typeof supportsBinary === 'function') {
	    callback = supportsBinary;
	    supportsBinary = null;
	  }

	  var isBinary = hasBinary(packets);

	  if (supportsBinary && isBinary) {
	    if (Blob && !dontSendBlobs) {
	      return exports.encodePayloadAsBlob(packets, callback);
	    }

	    return exports.encodePayloadAsArrayBuffer(packets, callback);
	  }

	  if (!packets.length) {
	    return callback('0:');
	  }

	  function setLengthHeader(message) {
	    return message.length + ':' + message;
	  }

	  function encodeOne(packet, doneCallback) {
	    exports.encodePacket(packet, !isBinary ? false : supportsBinary, false, function(message) {
	      doneCallback(null, setLengthHeader(message));
	    });
	  }

	  map(packets, encodeOne, function(err, results) {
	    return callback(results.join(''));
	  });
	};

	/**
	 * Async array map using after
	 */

	function map(ary, each, done) {
	  var result = new Array(ary.length);
	  var next = after(ary.length, done);

	  var eachWithIndex = function(i, el, cb) {
	    each(el, function(error, msg) {
	      result[i] = msg;
	      cb(error, result);
	    });
	  };

	  for (var i = 0; i < ary.length; i++) {
	    eachWithIndex(i, ary[i], next);
	  }
	}

	/*
	 * Decodes data when a payload is maybe expected. Possible binary contents are
	 * decoded from their base64 representation
	 *
	 * @param {String} data, callback method
	 * @api public
	 */

	exports.decodePayload = function (data, binaryType, callback) {
	  if (typeof data !== 'string') {
	    return exports.decodePayloadAsBinary(data, binaryType, callback);
	  }

	  if (typeof binaryType === 'function') {
	    callback = binaryType;
	    binaryType = null;
	  }

	  var packet;
	  if (data === '') {
	    // parser error - ignoring payload
	    return callback(err, 0, 1);
	  }

	  var length = '', n, msg;

	  for (var i = 0, l = data.length; i < l; i++) {
	    var chr = data.charAt(i);

	    if (chr !== ':') {
	      length += chr;
	      continue;
	    }

	    if (length === '' || (length != (n = Number(length)))) {
	      // parser error - ignoring payload
	      return callback(err, 0, 1);
	    }

	    msg = data.substr(i + 1, n);

	    if (length != msg.length) {
	      // parser error - ignoring payload
	      return callback(err, 0, 1);
	    }

	    if (msg.length) {
	      packet = exports.decodePacket(msg, binaryType, false);

	      if (err.type === packet.type && err.data === packet.data) {
	        // parser error in individual packet - ignoring payload
	        return callback(err, 0, 1);
	      }

	      var ret = callback(packet, i + n, l);
	      if (false === ret) return;
	    }

	    // advance cursor
	    i += n;
	    length = '';
	  }

	  if (length !== '') {
	    // parser error - ignoring payload
	    return callback(err, 0, 1);
	  }

	};

	/**
	 * Encodes multiple messages (payload) as binary.
	 *
	 * <1 = binary, 0 = string><number from 0-9><number from 0-9>[...]<number
	 * 255><data>
	 *
	 * Example:
	 * 1 3 255 1 2 3, if the binary contents are interpreted as 8 bit integers
	 *
	 * @param {Array} packets
	 * @return {ArrayBuffer} encoded payload
	 * @api private
	 */

	exports.encodePayloadAsArrayBuffer = function(packets, callback) {
	  if (!packets.length) {
	    return callback(new ArrayBuffer(0));
	  }

	  function encodeOne(packet, doneCallback) {
	    exports.encodePacket(packet, true, true, function(data) {
	      return doneCallback(null, data);
	    });
	  }

	  map(packets, encodeOne, function(err, encodedPackets) {
	    var totalLength = encodedPackets.reduce(function(acc, p) {
	      var len;
	      if (typeof p === 'string'){
	        len = p.length;
	      } else {
	        len = p.byteLength;
	      }
	      return acc + len.toString().length + len + 2; // string/binary identifier + separator = 2
	    }, 0);

	    var resultArray = new Uint8Array(totalLength);

	    var bufferIndex = 0;
	    encodedPackets.forEach(function(p) {
	      var isString = typeof p === 'string';
	      var ab = p;
	      if (isString) {
	        var view = new Uint8Array(p.length);
	        for (var i = 0; i < p.length; i++) {
	          view[i] = p.charCodeAt(i);
	        }
	        ab = view.buffer;
	      }

	      if (isString) { // not true binary
	        resultArray[bufferIndex++] = 0;
	      } else { // true binary
	        resultArray[bufferIndex++] = 1;
	      }

	      var lenStr = ab.byteLength.toString();
	      for (var i = 0; i < lenStr.length; i++) {
	        resultArray[bufferIndex++] = parseInt(lenStr[i]);
	      }
	      resultArray[bufferIndex++] = 255;

	      var view = new Uint8Array(ab);
	      for (var i = 0; i < view.length; i++) {
	        resultArray[bufferIndex++] = view[i];
	      }
	    });

	    return callback(resultArray.buffer);
	  });
	};

	/**
	 * Encode as Blob
	 */

	exports.encodePayloadAsBlob = function(packets, callback) {
	  function encodeOne(packet, doneCallback) {
	    exports.encodePacket(packet, true, true, function(encoded) {
	      var binaryIdentifier = new Uint8Array(1);
	      binaryIdentifier[0] = 1;
	      if (typeof encoded === 'string') {
	        var view = new Uint8Array(encoded.length);
	        for (var i = 0; i < encoded.length; i++) {
	          view[i] = encoded.charCodeAt(i);
	        }
	        encoded = view.buffer;
	        binaryIdentifier[0] = 0;
	      }

	      var len = (encoded instanceof ArrayBuffer)
	        ? encoded.byteLength
	        : encoded.size;

	      var lenStr = len.toString();
	      var lengthAry = new Uint8Array(lenStr.length + 1);
	      for (var i = 0; i < lenStr.length; i++) {
	        lengthAry[i] = parseInt(lenStr[i]);
	      }
	      lengthAry[lenStr.length] = 255;

	      if (Blob) {
	        var blob = new Blob([binaryIdentifier.buffer, lengthAry.buffer, encoded]);
	        doneCallback(null, blob);
	      }
	    });
	  }

	  map(packets, encodeOne, function(err, results) {
	    return callback(new Blob(results));
	  });
	};

	/*
	 * Decodes data when a payload is maybe expected. Strings are decoded by
	 * interpreting each byte as a key code for entries marked to start with 0. See
	 * description of encodePayloadAsBinary
	 *
	 * @param {ArrayBuffer} data, callback method
	 * @api public
	 */

	exports.decodePayloadAsBinary = function (data, binaryType, callback) {
	  if (typeof binaryType === 'function') {
	    callback = binaryType;
	    binaryType = null;
	  }

	  var bufferTail = data;
	  var buffers = [];

	  while (bufferTail.byteLength > 0) {
	    var tailArray = new Uint8Array(bufferTail);
	    var isString = tailArray[0] === 0;
	    var msgLength = '';

	    for (var i = 1; ; i++) {
	      if (tailArray[i] === 255) break;

	      // 310 = char length of Number.MAX_VALUE
	      if (msgLength.length > 310) {
	        return callback(err, 0, 1);
	      }

	      msgLength += tailArray[i];
	    }

	    bufferTail = sliceBuffer(bufferTail, 2 + msgLength.length);
	    msgLength = parseInt(msgLength);

	    var msg = sliceBuffer(bufferTail, 0, msgLength);
	    if (isString) {
	      try {
	        msg = String.fromCharCode.apply(null, new Uint8Array(msg));
	      } catch (e) {
	        // iPhone Safari doesn't let you apply to typed arrays
	        var typed = new Uint8Array(msg);
	        msg = '';
	        for (var i = 0; i < typed.length; i++) {
	          msg += String.fromCharCode(typed[i]);
	        }
	      }
	    }

	    buffers.push(msg);
	    bufferTail = sliceBuffer(bufferTail, msgLength);
	  }

	  var total = buffers.length;
	  buffers.forEach(function(buffer, i) {
	    callback(exports.decodePacket(buffer, binaryType, true), i, total);
	  });
	};


/***/ },
/* 10 */
/***/ function(module, exports) {

	
	/**
	 * Gets the keys for an object.
	 *
	 * @return {Array} keys
	 * @api private
	 */

	module.exports = Object.keys || function keys (obj){
	  var arr = [];
	  var has = Object.prototype.hasOwnProperty;

	  for (var i in obj) {
	    if (has.call(obj, i)) {
	      arr.push(i);
	    }
	  }
	  return arr;
	};


/***/ },
/* 11 */
/***/ function(module, exports, __webpack_require__) {

	/* global Blob File */

	/*
	 * Module requirements.
	 */

	var isArray = __webpack_require__(12);

	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]';

	/**
	 * Module exports.
	 */

	module.exports = hasBinary;

	/**
	 * Checks for binary data.
	 *
	 * Supports Buffer, ArrayBuffer, Blob and File.
	 *
	 * @param {Object} anything
	 * @api public
	 */

	function hasBinary (obj) {
	  if (!obj || typeof obj !== 'object') {
	    return false;
	  }

	  if (isArray(obj)) {
	    for (var i = 0, l = obj.length; i < l; i++) {
	      if (hasBinary(obj[i])) {
	        return true;
	      }
	    }
	    return false;
	  }

	  if ((typeof Buffer === 'function' && Buffer.isBuffer && Buffer.isBuffer(obj)) ||
	    (typeof ArrayBuffer === 'function' && obj instanceof ArrayBuffer) ||
	    (withNativeBlob && obj instanceof Blob) ||
	    (withNativeFile && obj instanceof File)
	  ) {
	    return true;
	  }

	  // see: https://github.com/Automattic/has-binary/pull/4
	  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;
	}


/***/ },
/* 12 */
/***/ function(module, exports) {

	var toString = {}.toString;

	module.exports = Array.isArray || function (arr) {
	  return toString.call(arr) == '[object Array]';
	};


/***/ },
/* 13 */
/***/ function(module, exports) {

	/**
	 * An abstraction for slicing an arraybuffer even when
	 * ArrayBuffer.prototype.slice is not supported
	 *
	 * @api public
	 */

	module.exports = function(arraybuffer, start, end) {
	  var bytes = arraybuffer.byteLength;
	  start = start || 0;
	  end = end || bytes;

	  if (arraybuffer.slice) { return arraybuffer.slice(start, end); }

	  if (start < 0) { start += bytes; }
	  if (end < 0) { end += bytes; }
	  if (end > bytes) { end = bytes; }

	  if (start >= bytes || start >= end || bytes === 0) {
	    return new ArrayBuffer(0);
	  }

	  var abv = new Uint8Array(arraybuffer);
	  var result = new Uint8Array(end - start);
	  for (var i = start, ii = 0; i < end; i++, ii++) {
	    result[ii] = abv[i];
	  }
	  return result.buffer;
	};


/***/ },
/* 14 */
/***/ function(module, exports) {

	module.exports = after

	function after(count, callback, err_cb) {
	    var bail = false
	    err_cb = err_cb || noop
	    proxy.count = count

	    return (count === 0) ? callback() : proxy

	    function proxy(err, result) {
	        if (proxy.count <= 0) {
	            throw new Error('after called too many times')
	        }
	        --proxy.count

	        // after first error, rest are passed to err_cb
	        if (err) {
	            bail = true
	            callback(err)
	            // future error callbacks will go to error handler
	            callback = err_cb
	        } else if (proxy.count === 0 && !bail) {
	            callback(null, result)
	        }
	    }
	}

	function noop() {}


/***/ },
/* 15 */
/***/ function(module, exports) {

	/*! https://mths.be/utf8js v2.1.2 by @mathias */

	var stringFromCharCode = String.fromCharCode;

	// Taken from https://mths.be/punycode
	function ucs2decode(string) {
		var output = [];
		var counter = 0;
		var length = string.length;
		var value;
		var extra;
		while (counter < length) {
			value = string.charCodeAt(counter++);
			if (value >= 0xD800 && value <= 0xDBFF && counter < length) {
				// high surrogate, and there is a next character
				extra = string.charCodeAt(counter++);
				if ((extra & 0xFC00) == 0xDC00) { // low surrogate
					output.push(((value & 0x3FF) << 10) + (extra & 0x3FF) + 0x10000);
				} else {
					// unmatched surrogate; only append this code unit, in case the next
					// code unit is the high surrogate of a surrogate pair
					output.push(value);
					counter--;
				}
			} else {
				output.push(value);
			}
		}
		return output;
	}

	// Taken from https://mths.be/punycode
	function ucs2encode(array) {
		var length = array.length;
		var index = -1;
		var value;
		var output = '';
		while (++index < length) {
			value = array[index];
			if (value > 0xFFFF) {
				value -= 0x10000;
				output += stringFromCharCode(value >>> 10 & 0x3FF | 0xD800);
				value = 0xDC00 | value & 0x3FF;
			}
			output += stringFromCharCode(value);
		}
		return output;
	}

	function checkScalarValue(codePoint, strict) {
		if (codePoint >= 0xD800 && codePoint <= 0xDFFF) {
			if (strict) {
				throw Error(
					'Lone surrogate U+' + codePoint.toString(16).toUpperCase() +
					' is not a scalar value'
				);
			}
			return false;
		}
		return true;
	}
	/*--------------------------------------------------------------------------*/

	function createByte(codePoint, shift) {
		return stringFromCharCode(((codePoint >> shift) & 0x3F) | 0x80);
	}

	function encodeCodePoint(codePoint, strict) {
		if ((codePoint & 0xFFFFFF80) == 0) { // 1-byte sequence
			return stringFromCharCode(codePoint);
		}
		var symbol = '';
		if ((codePoint & 0xFFFFF800) == 0) { // 2-byte sequence
			symbol = stringFromCharCode(((codePoint >> 6) & 0x1F) | 0xC0);
		}
		else if ((codePoint & 0xFFFF0000) == 0) { // 3-byte sequence
			if (!checkScalarValue(codePoint, strict)) {
				codePoint = 0xFFFD;
			}
			symbol = stringFromCharCode(((codePoint >> 12) & 0x0F) | 0xE0);
			symbol += createByte(codePoint, 6);
		}
		else if ((codePoint & 0xFFE00000) == 0) { // 4-byte sequence
			symbol = stringFromCharCode(((codePoint >> 18) & 0x07) | 0xF0);
			symbol += createByte(codePoint, 12);
			symbol += createByte(codePoint, 6);
		}
		symbol += stringFromCharCode((codePoint & 0x3F) | 0x80);
		return symbol;
	}

	function utf8encode(string, opts) {
		opts = opts || {};
		var strict = false !== opts.strict;

		var codePoints = ucs2decode(string);
		var length = codePoints.length;
		var index = -1;
		var codePoint;
		var byteString = '';
		while (++index < length) {
			codePoint = codePoints[index];
			byteString += encodeCodePoint(codePoint, strict);
		}
		return byteString;
	}

	/*--------------------------------------------------------------------------*/

	function readContinuationByte() {
		if (byteIndex >= byteCount) {
			throw Error('Invalid byte index');
		}

		var continuationByte = byteArray[byteIndex] & 0xFF;
		byteIndex++;

		if ((continuationByte & 0xC0) == 0x80) {
			return continuationByte & 0x3F;
		}

		// If we end up here, it’s not a continuation byte
		throw Error('Invalid continuation byte');
	}

	function decodeSymbol(strict) {
		var byte1;
		var byte2;
		var byte3;
		var byte4;
		var codePoint;

		if (byteIndex > byteCount) {
			throw Error('Invalid byte index');
		}

		if (byteIndex == byteCount) {
			return false;
		}

		// Read first byte
		byte1 = byteArray[byteIndex] & 0xFF;
		byteIndex++;

		// 1-byte sequence (no continuation bytes)
		if ((byte1 & 0x80) == 0) {
			return byte1;
		}

		// 2-byte sequence
		if ((byte1 & 0xE0) == 0xC0) {
			byte2 = readContinuationByte();
			codePoint = ((byte1 & 0x1F) << 6) | byte2;
			if (codePoint >= 0x80) {
				return codePoint;
			} else {
				throw Error('Invalid continuation byte');
			}
		}

		// 3-byte sequence (may include unpaired surrogates)
		if ((byte1 & 0xF0) == 0xE0) {
			byte2 = readContinuationByte();
			byte3 = readContinuationByte();
			codePoint = ((byte1 & 0x0F) << 12) | (byte2 << 6) | byte3;
			if (codePoint >= 0x0800) {
				return checkScalarValue(codePoint, strict) ? codePoint : 0xFFFD;
			} else {
				throw Error('Invalid continuation byte');
			}
		}

		// 4-byte sequence
		if ((byte1 & 0xF8) == 0xF0) {
			byte2 = readContinuationByte();
			byte3 = readContinuationByte();
			byte4 = readContinuationByte();
			codePoint = ((byte1 & 0x07) << 0x12) | (byte2 << 0x0C) |
				(byte3 << 0x06) | byte4;
			if (codePoint >= 0x010000 && codePoint <= 0x10FFFF) {
				return codePoint;
			}
		}

		throw Error('Invalid UTF-8 detected');
	}

	var byteArray;
	var byteCount;
	var byteIndex;
	function utf8decode(byteString, opts) {
		opts = opts || {};
		var strict = false !== opts.strict;

		byteArray = ucs2decode(byteString);
		byteCount = byteArray.length;
		byteIndex = 0;
		var codePoints = [];
		var tmp;
		while ((tmp = decodeSymbol(strict)) !== false) {
			codePoints.push(tmp);
		}
		return ucs2encode(codePoints);
	}

	module.exports = {
		version: '2.1.2',
		encode: utf8encode,
		decode: utf8decode
	};


/***/ },
/* 16 */
/***/ function(module, exports) {

	/*
	 * base64-arraybuffer
	 * https://github.com/niklasvh/base64-arraybuffer
	 *
	 * Copyright (c) 2012 Niklas von Hertzen
	 * Licensed under the MIT license.
	 */
	(function(){
	  "use strict";

	  var chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";

	  // Use a lookup table to find the index.
	  var lookup = new Uint8Array(256);
	  for (var i = 0; i < chars.length; i++) {
	    lookup[chars.charCodeAt(i)] = i;
	  }

	  exports.encode = function(arraybuffer) {
	    var bytes = new Uint8Array(arraybuffer),
	    i, len = bytes.length, base64 = "";

	    for (i = 0; i < len; i+=3) {
	      base64 += chars[bytes[i] >> 2];
	      base64 += chars[((bytes[i] & 3) << 4) | (bytes[i + 1] >> 4)];
	      base64 += chars[((bytes[i + 1] & 15) << 2) | (bytes[i + 2] >> 6)];
	      base64 += chars[bytes[i + 2] & 63];
	    }

	    if ((len % 3) === 2) {
	      base64 = base64.substring(0, base64.length - 1) + "=";
	    } else if (len % 3 === 1) {
	      base64 = base64.substring(0, base64.length - 2) + "==";
	    }

	    return base64;
	  };

	  exports.decode =  function(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[base64.charCodeAt(i)];
	      encoded2 = lookup[base64.charCodeAt(i+1)];
	      encoded3 = lookup[base64.charCodeAt(i+2)];
	      encoded4 = lookup[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;
	  };
	})();


/***/ },
/* 17 */
/***/ function(module, exports) {

	/**
	 * Create a blob builder even when vendor prefixes exist
	 */

	var BlobBuilder = typeof BlobBuilder !== 'undefined' ? BlobBuilder :
	  typeof WebKitBlobBuilder !== 'undefined' ? WebKitBlobBuilder :
	  typeof MSBlobBuilder !== 'undefined' ? MSBlobBuilder :
	  typeof MozBlobBuilder !== 'undefined' ? MozBlobBuilder : 
	  false;

	/**
	 * Check if Blob constructor is supported
	 */

	var blobSupported = (function() {
	  try {
	    var a = new Blob(['hi']);
	    return a.size === 2;
	  } catch(e) {
	    return false;
	  }
	})();

	/**
	 * Check if Blob constructor supports ArrayBufferViews
	 * Fails in Safari 6, so we need to map to ArrayBuffers there.
	 */

	var blobSupportsArrayBufferView = blobSupported && (function() {
	  try {
	    var b = new Blob([new Uint8Array([1,2])]);
	    return b.size === 2;
	  } catch(e) {
	    return false;
	  }
	})();

	/**
	 * Check if BlobBuilder is supported
	 */

	var blobBuilderSupported = BlobBuilder
	  && BlobBuilder.prototype.append
	  && BlobBuilder.prototype.getBlob;

	/**
	 * Helper function that maps ArrayBufferViews to ArrayBuffers
	 * Used by BlobBuilder constructor and old browsers that didn't
	 * support it in the Blob constructor.
	 */

	function mapArrayBufferViews(ary) {
	  return ary.map(function(chunk) {
	    if (chunk.buffer instanceof ArrayBuffer) {
	      var buf = chunk.buffer;

	      // if this is a subarray, make a copy so we only
	      // include the subarray region from the underlying buffer
	      if (chunk.byteLength !== buf.byteLength) {
	        var copy = new Uint8Array(chunk.byteLength);
	        copy.set(new Uint8Array(buf, chunk.byteOffset, chunk.byteLength));
	        buf = copy.buffer;
	      }

	      return buf;
	    }

	    return chunk;
	  });
	}

	function BlobBuilderConstructor(ary, options) {
	  options = options || {};

	  var bb = new BlobBuilder();
	  mapArrayBufferViews(ary).forEach(function(part) {
	    bb.append(part);
	  });

	  return (options.type) ? bb.getBlob(options.type) : bb.getBlob();
	};

	function BlobConstructor(ary, options) {
	  return new Blob(mapArrayBufferViews(ary), options || {});
	};

	if (typeof Blob !== 'undefined') {
	  BlobBuilderConstructor.prototype = Blob.prototype;
	  BlobConstructor.prototype = Blob.prototype;
	}

	module.exports = (function() {
	  if (blobSupported) {
	    return blobSupportsArrayBufferView ? Blob : BlobConstructor;
	  } else if (blobBuilderSupported) {
	    return BlobBuilderConstructor;
	  } else {
	    return undefined;
	  }
	})();


/***/ },
/* 18 */
/***/ function(module, exports, __webpack_require__) {

	
	/**
	 * Expose `Emitter`.
	 */

	if (true) {
	  module.exports = Emitter;
	}

	/**
	 * 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;
	};

	/**
	 * 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;
	};


/***/ },
/* 19 */
/***/ function(module, exports) {

	/**
	 * Compiles a querystring
	 * Returns string representation of the object
	 *
	 * @param {Object}
	 * @api private
	 */

	exports.encode = function (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
	 */

	exports.decode = function(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;
	};


/***/ },
/* 20 */
/***/ function(module, exports) {

	
	module.exports = function(a, b){
	  var fn = function(){};
	  fn.prototype = b.prototype;
	  a.prototype = new fn;
	  a.prototype.constructor = a;
	};

/***/ },
/* 21 */
/***/ function(module, exports) {

	'use strict';

	var alphabet = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-_'.split('')
	  , length = 64
	  , map = {}
	  , 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;
	}

	/**
	 * Return the integer value specified by the given string.
	 *
	 * @param {String} str The string to convert.
	 * @returns {Number} The integer value represented by the string.
	 * @api public
	 */
	function decode(str) {
	  var decoded = 0;

	  for (i = 0; i < str.length; i++) {
	    decoded = decoded * length + map[str.charAt(i)];
	  }

	  return decoded;
	}

	/**
	 * 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;

	//
	// Expose the `yeast`, `encode` and `decode` functions.
	//
	yeast.encode = encode;
	yeast.decode = decode;
	module.exports = yeast;


/***/ },
/* 22 */
/***/ function(module, exports, __webpack_require__) {

	/* WEBPACK VAR INJECTION */(function(process) {'use strict';

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

	/* eslint-env browser */

	/**
	 * This is the web browser implementation of `debug()`.
	 */

	exports.log = log;
	exports.formatArgs = formatArgs;
	exports.save = save;
	exports.load = load;
	exports.useColors = useColors;
	exports.storage = localstorage();

	/**
	 * Colors.
	 */

	exports.colors = ['#0000CC', '#0000FF', '#0033CC', '#0033FF', '#0066CC', '#0066FF', '#0099CC', '#0099FF', '#00CC00', '#00CC33', '#00CC66', '#00CC99', '#00CCCC', '#00CCFF', '#3300CC', '#3300FF', '#3333CC', '#3333FF', '#3366CC', '#3366FF', '#3399CC', '#3399FF', '#33CC00', '#33CC33', '#33CC66', '#33CC99', '#33CCCC', '#33CCFF', '#6600CC', '#6600FF', '#6633CC', '#6633FF', '#66CC00', '#66CC33', '#9900CC', '#9900FF', '#9933CC', '#9933FF', '#99CC00', '#99CC33', '#CC0000', '#CC0033', '#CC0066', '#CC0099', '#CC00CC', '#CC00FF', '#CC3300', '#CC3333', '#CC3366', '#CC3399', '#CC33CC', '#CC33FF', '#CC6600', '#CC6633', '#CC9900', '#CC9933', '#CCCC00', '#CCCC33', '#FF0000', '#FF0033', '#FF0066', '#FF0099', '#FF00CC', '#FF00FF', '#FF3300', '#FF3333', '#FF3366', '#FF3399', '#FF33CC', '#FF33FF', '#FF6600', '#FF6633', '#FF9900', '#FF9933', '#FFCC00', '#FFCC33'];

	/**
	 * Currently only WebKit-based Web Inspectors, Firefox >= v31,
	 * and the Firebug extension (any Firefox version) are known
	 * to support "%c" CSS customizations.
	 *
	 * TODO: add a `localStorage` variable to explicitly enable/disable colors
	 */

	// eslint-disable-next-line complexity
	function useColors() {
		// NB: In an Electron preload script, document will be defined but not fully
		// initialized. Since we know we're in Chrome, we'll just detect this case
		// explicitly
		if (typeof window !== 'undefined' && window.process && (window.process.type === 'renderer' || window.process.__nwjs)) {
			return true;
		}

		// Internet Explorer and Edge do not support colors.
		if (typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/(edge|trident)\/(\d+)/)) {
			return false;
		}

		// Is webkit? http://stackoverflow.com/a/16459606/376773
		// document is undefined in react-native: https://github.com/facebook/react-native/pull/1632
		return typeof document !== 'undefined' && document.documentElement && document.documentElement.style && document.documentElement.style.WebkitAppearance ||
		// Is firebug? http://stackoverflow.com/a/398120/376773
		typeof window !== 'undefined' && window.console && (window.console.firebug || window.console.exception && window.console.table) ||
		// Is firefox >= v31?
		// https://developer.mozilla.org/en-US/docs/Tools/Web_Console#Styling_messages
		typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/firefox\/(\d+)/) && parseInt(RegExp.$1, 10) >= 31 ||
		// Double check webkit in userAgent just in case we are in a worker
		typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/applewebkit\/(\d+)/);
	}

	/**
	 * Colorize log arguments if enabled.
	 *
	 * @api public
	 */

	function formatArgs(args) {
		args[0] = (this.useColors ? '%c' : '') + this.namespace + (this.useColors ? ' %c' : ' ') + args[0] + (this.useColors ? '%c ' : ' ') + '+' + module.exports.humanize(this.diff);

		if (!this.useColors) {
			return;
		}

		var c = 'color: ' + this.color;
		args.splice(1, 0, c, 'color: inherit');

		// The final "%c" is somewhat tricky, because there could be other
		// arguments passed either before or after the %c, so we need to
		// figure out the correct index to insert the CSS into
		var index = 0;
		var lastC = 0;
		args[0].replace(/%[a-zA-Z%]/g, function (match) {
			if (match === '%%') {
				return;
			}
			index++;
			if (match === '%c') {
				// We only are interested in the *last* %c
				// (the user may have provided their own)
				lastC = index;
			}
		});

		args.splice(lastC, 0, c);
	}

	/**
	 * Invokes `console.log()` when available.
	 * No-op when `console.log` is not a "function".
	 *
	 * @api public
	 */
	function log() {
		var _console;

		// This hackery is required for IE8/9, where
		// the `console.log` function doesn't have 'apply'
		return (typeof console === 'undefined' ? 'undefined' : _typeof(console)) === 'object' && console.log && (_console = console).log.apply(_console, arguments);
	}

	/**
	 * Save `namespaces`.
	 *
	 * @param {String} namespaces
	 * @api private
	 */
	function save(namespaces) {
		try {
			if (namespaces) {
				exports.storage.setItem('debug', namespaces);
			} else {
				exports.storage.removeItem('debug');
			}
		} catch (error) {
			// Swallow
			// XXX (@Qix-) should we be logging these?
		}
	}

	/**
	 * Load `namespaces`.
	 *
	 * @return {String} returns the previously persisted debug modes
	 * @api private
	 */
	function load() {
		var r = void 0;
		try {
			r = exports.storage.getItem('debug');
		} catch (error) {}
		// Swallow
		// XXX (@Qix-) should we be logging these?


		// If debug isn't set in LS, and we're in Electron, try to load $DEBUG
		if (!r && typeof process !== 'undefined' && 'env' in process) {
			r = process.env.DEBUG;
		}

		return r;
	}

	/**
	 * Localstorage attempts to return the localstorage.
	 *
	 * This is necessary because safari throws
	 * when a user disables cookies/localstorage
	 * and you attempt to access it.
	 *
	 * @return {LocalStorage}
	 * @api private
	 */

	function localstorage() {
		try {
			// TVMLKit (Apple TV JS Runtime) does not have a window object, just localStorage in the global context
			// The Browser also has localStorage in the global context.
			return localStorage;
		} catch (error) {
			// Swallow
			// XXX (@Qix-) should we be logging these?
		}
	}

	module.exports = __webpack_require__(24)(exports);

	var formatters = module.exports.formatters;

	/**
	 * Map %j to `JSON.stringify()`, since no Web Inspectors do that by default.
	 */

	formatters.j = function (v) {
		try {
			return JSON.stringify(v);
		} catch (error) {
			return '[UnexpectedJSONParseError]: ' + error.message;
		}
	};
	/* WEBPACK VAR INJECTION */}.call(exports, __webpack_require__(23)))

/***/ },
/* 23 */
/***/ function(module, exports) {

	// shim for using process in browser
	var process = module.exports = {};

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

	var cachedSetTimeout;
	var cachedClearTimeout;

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


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



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

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

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

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

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

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

	function noop() {}

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

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

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

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


/***/ },
/* 24 */
/***/ function(module, exports, __webpack_require__) {

	'use strict';

	function _toConsumableArray(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } else { return Array.from(arr); } }

	/**
	 * This is the common logic for both the Node.js and web browser
	 * implementations of `debug()`.
	 */

	function setup(env) {
		createDebug.debug = createDebug;
		createDebug.default = createDebug;
		createDebug.coerce = coerce;
		createDebug.disable = disable;
		createDebug.enable = enable;
		createDebug.enabled = enabled;
		createDebug.humanize = __webpack_require__(25);

		Object.keys(env).forEach(function (key) {
			createDebug[key] = env[key];
		});

		/**
	 * Active `debug` instances.
	 */
		createDebug.instances = [];

		/**
	 * The currently active debug mode names, and names to skip.
	 */

		createDebug.names = [];
		createDebug.skips = [];

		/**
	 * Map of special "%n" handling functions, for the debug "format" argument.
	 *
	 * Valid key names are a single, lower or upper-case letter, i.e. "n" and "N".
	 */
		createDebug.formatters = {};

		/**
	 * Selects a color for a debug namespace
	 * @param {String} namespace The namespace string for the for the debug instance to be colored
	 * @return {Number|String} An ANSI color code for the given namespace
	 * @api private
	 */
		function selectColor(namespace) {
			var hash = 0;

			for (var i = 0; i < namespace.length; i++) {
				hash = (hash << 5) - hash + namespace.charCodeAt(i);
				hash |= 0; // Convert to 32bit integer
			}

			return createDebug.colors[Math.abs(hash) % createDebug.colors.length];
		}
		createDebug.selectColor = selectColor;

		/**
	 * Create a debugger with the given `namespace`.
	 *
	 * @param {String} namespace
	 * @return {Function}
	 * @api public
	 */
		function createDebug(namespace) {
			var prevTime = void 0;

			function debug() {
				for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
					args[_key] = arguments[_key];
				}

				// Disabled?
				if (!debug.enabled) {
					return;
				}

				var self = debug;

				// Set `diff` timestamp
				var curr = Number(new Date());
				var ms = curr - (prevTime || curr);
				self.diff = ms;
				self.prev = prevTime;
				self.curr = curr;
				prevTime = curr;

				args[0] = createDebug.coerce(args[0]);

				if (typeof args[0] !== 'string') {
					// Anything else let's inspect with %O
					args.unshift('%O');
				}

				// Apply any `formatters` transformations
				var index = 0;
				args[0] = args[0].replace(/%([a-zA-Z%])/g, function (match, format) {
					// If we encounter an escaped % then don't increase the array index
					if (match === '%%') {
						return match;
					}
					index++;
					var formatter = createDebug.formatters[format];
					if (typeof formatter === 'function') {
						var val = args[index];
						match = formatter.call(self, val);

						// Now we need to remove `args[index]` since it's inlined in the `format`
						args.splice(index, 1);
						index--;
					}
					return match;
				});

				// Apply env-specific formatting (colors, etc.)
				createDebug.formatArgs.call(self, args);

				var logFn = self.log || createDebug.log;
				logFn.apply(self, args);
			}

			debug.namespace = namespace;
			debug.enabled = createDebug.enabled(namespace);
			debug.useColors = createDebug.useColors();
			debug.color = selectColor(namespace);
			debug.destroy = destroy;
			debug.extend = extend;
			// Debug.formatArgs = formatArgs;
			// debug.rawLog = rawLog;

			// env-specific initialization logic for debug instances
			if (typeof createDebug.init === 'function') {
				createDebug.init(debug);
			}

			createDebug.instances.push(debug);

			return debug;
		}

		function destroy() {
			var index = createDebug.instances.indexOf(this);
			if (index !== -1) {
				createDebug.instances.splice(index, 1);
				return true;
			}
			return false;
		}

		function extend(namespace, delimiter) {
			var newDebug = createDebug(this.namespace + (typeof delimiter === 'undefined' ? ':' : delimiter) + namespace);
			newDebug.log = this.log;
			return newDebug;
		}

		/**
	 * Enables a debug mode by namespaces. This can include modes
	 * separated by a colon and wildcards.
	 *
	 * @param {String} namespaces
	 * @api public
	 */
		function enable(namespaces) {
			createDebug.save(namespaces);

			createDebug.names = [];
			createDebug.skips = [];

			var i = void 0;
			var split = (typeof namespaces === 'string' ? namespaces : '').split(/[\s,]+/);
			var len = split.length;

			for (i = 0; i < len; i++) {
				if (!split[i]) {
					// ignore empty strings
					continue;
				}

				namespaces = split[i].replace(/\*/g, '.*?');

				if (namespaces[0] === '-') {
					createDebug.skips.push(new RegExp('^' + namespaces.substr(1) + '$'));
				} else {
					createDebug.names.push(new RegExp('^' + namespaces + '$'));
				}
			}

			for (i = 0; i < createDebug.instances.length; i++) {
				var instance = createDebug.instances[i];
				instance.enabled = createDebug.enabled(instance.namespace);
			}
		}

		/**
	 * Disable debug output.
	 *
	 * @return {String} namespaces
	 * @api public
	 */
		function disable() {
			var namespaces = [].concat(_toConsumableArray(createDebug.names.map(toNamespace)), _toConsumableArray(createDebug.skips.map(toNamespace).map(function (namespace) {
				return '-' + namespace;
			}))).join(',');
			createDebug.enable('');
			return namespaces;
		}

		/**
	 * Returns true if the given mode name is enabled, false otherwise.
	 *
	 * @param {String} name
	 * @return {Boolean}
	 * @api public
	 */
		function enabled(name) {
			if (name[name.length - 1] === '*') {
				return true;
			}

			var i = void 0;
			var len = void 0;

			for (i = 0, len = createDebug.skips.length; i < len; i++) {
				if (createDebug.skips[i].test(name)) {
					return false;
				}
			}

			for (i = 0, len = createDebug.names.length; i < len; i++) {
				if (createDebug.names[i].test(name)) {
					return true;
				}
			}

			return false;
		}

		/**
	 * Convert regexp to namespace
	 *
	 * @param {RegExp} regxep
	 * @return {String} namespace
	 * @api private
	 */
		function toNamespace(regexp) {
			return regexp.toString().substring(2, regexp.toString().length - 2).replace(/\.\*\?$/, '*');
		}

		/**
	 * Coerce `val`.
	 *
	 * @param {Mixed} val
	 * @return {Mixed}
	 * @api private
	 */
		function coerce(val) {
			if (val instanceof Error) {
				return val.stack || val.message;
			}
			return val;
		}

		createDebug.enable(createDebug.load());

		return createDebug;
	}

	module.exports = setup;

/***/ },
/* 25 */
/***/ function(module, exports) {

	/**
	 * Helpers.
	 */

	var s = 1000;
	var m = s * 60;
	var h = m * 60;
	var d = h * 24;
	var w = d * 7;
	var y = d * 365.25;

	/**
	 * Parse or format the given `val`.
	 *
	 * Options:
	 *
	 *  - `long` verbose formatting [false]
	 *
	 * @param {String|Number} val
	 * @param {Object} [options]
	 * @throws {Error} throw an error if val is not a non-empty string or a number
	 * @return {String|Number}
	 * @api public
	 */

	module.exports = function(val, options) {
	  options = options || {};
	  var type = typeof val;
	  if (type === 'string' && val.length > 0) {
	    return parse(val);
	  } else if (type === 'number' && isFinite(val)) {
	    return options.long ? fmtLong(val) : fmtShort(val);
	  }
	  throw new Error(
	    'val is not a non-empty string or a valid number. val=' +
	      JSON.stringify(val)
	  );
	};

	/**
	 * Parse the given `str` and return milliseconds.
	 *
	 * @param {String} str
	 * @return {Number}
	 * @api private
	 */

	function parse(str) {
	  str = String(str);
	  if (str.length > 100) {
	    return;
	  }
	  var match = /^(-?(?:\d+)?\.?\d+) *(milliseconds?|msecs?|ms|seconds?|secs?|s|minutes?|mins?|m|hours?|hrs?|h|days?|d|weeks?|w|years?|yrs?|y)?$/i.exec(
	    str
	  );
	  if (!match) {
	    return;
	  }
	  var n = parseFloat(match[1]);
	  var type = (match[2] || 'ms').toLowerCase();
	  switch (type) {
	    case 'years':
	    case 'year':
	    case 'yrs':
	    case 'yr':
	    case 'y':
	      return n * y;
	    case 'weeks':
	    case 'week':
	    case 'w':
	      return n * w;
	    case 'days':
	    case 'day':
	    case 'd':
	      return n * d;
	    case 'hours':
	    case 'hour':
	    case 'hrs':
	    case 'hr':
	    case 'h':
	      return n * h;
	    case 'minutes':
	    case 'minute':
	    case 'mins':
	    case 'min':
	    case 'm':
	      return n * m;
	    case 'seconds':
	    case 'second':
	    case 'secs':
	    case 'sec':
	    case 's':
	      return n * s;
	    case 'milliseconds':
	    case 'millisecond':
	    case 'msecs':
	    case 'msec':
	    case 'ms':
	      return n;
	    default:
	      return undefined;
	  }
	}

	/**
	 * Short format for `ms`.
	 *
	 * @param {Number} ms
	 * @return {String}
	 * @api private
	 */

	function fmtShort(ms) {
	  var msAbs = Math.abs(ms);
	  if (msAbs >= d) {
	    return Math.round(ms / d) + 'd';
	  }
	  if (msAbs >= h) {
	    return Math.round(ms / h) + 'h';
	  }
	  if (msAbs >= m) {
	    return Math.round(ms / m) + 'm';
	  }
	  if (msAbs >= s) {
	    return Math.round(ms / s) + 's';
	  }
	  return ms + 'ms';
	}

	/**
	 * Long format for `ms`.
	 *
	 * @param {Number} ms
	 * @return {String}
	 * @api private
	 */

	function fmtLong(ms) {
	  var msAbs = Math.abs(ms);
	  if (msAbs >= d) {
	    return plural(ms, msAbs, d, 'day');
	  }
	  if (msAbs >= h) {
	    return plural(ms, msAbs, h, 'hour');
	  }
	  if (msAbs >= m) {
	    return plural(ms, msAbs, m, 'minute');
	  }
	  if (msAbs >= s) {
	    return plural(ms, msAbs, s, 'second');
	  }
	  return ms + ' ms';
	}

	/**
	 * Pluralization helper.
	 */

	function plural(ms, msAbs, n, name) {
	  var isPlural = msAbs >= n * 1.5;
	  return Math.round(ms / n) + ' ' + name + (isPlural ? 's' : '');
	}


/***/ },
/* 26 */
/***/ function(module, exports, __webpack_require__) {

	/**
	 * Module requirements.
	 */

	var Polling = __webpack_require__(7);
	var inherit = __webpack_require__(20);
	var globalThis = __webpack_require__(5);

	/**
	 * Module exports.
	 */

	module.exports = JSONPPolling;

	/**
	 * Cached regular expressions.
	 */

	var rNewline = /\n/g;
	var rEscapedNewline = /\\n/g;

	/**
	 * Global JSONP callbacks.
	 */

	var callbacks;

	/**
	 * Noop.
	 */

	function empty () { }

	/**
	 * JSONP Polling constructor.
	 *
	 * @param {Object} opts.
	 * @api public
	 */

	function JSONPPolling (opts) {
	  Polling.call(this, opts);

	  this.query = this.query || {};

	  // define global callbacks array if not present
	  // we do this here (lazily) to avoid unneeded global pollution
	  if (!callbacks) {
	    // we need to consider multiple engines in the same page
	    callbacks = globalThis.___eio = (globalThis.___eio || []);
	  }

	  // callback identifier
	  this.index = callbacks.length;

	  // add callback to jsonp global
	  var self = this;
	  callbacks.push(function (msg) {
	    self.onData(msg);
	  });

	  // append to query string
	  this.query.j = this.index;

	  // prevent spurious errors from being emitted when the window is unloaded
	  if (typeof addEventListener === 'function') {
	    addEventListener('beforeunload', function () {
	      if (self.script) self.script.onerror = empty;
	    }, false);
	  }
	}

	/**
	 * Inherits from Polling.
	 */

	inherit(JSONPPolling, Polling);

	/*
	 * JSONP only supports binary as base64 encoded strings
	 */

	JSONPPolling.prototype.supportsBinary = false;

	/**
	 * Closes the socket.
	 *
	 * @api private
	 */

	JSONPPolling.prototype.doClose = function () {
	  if (this.script) {
	    this.script.parentNode.removeChild(this.script);
	    this.script = null;
	  }

	  if (this.form) {
	    this.form.parentNode.removeChild(this.form);
	    this.form = null;
	    this.iframe = null;
	  }

	  Polling.prototype.doClose.call(this);
	};

	/**
	 * Starts a poll cycle.
	 *
	 * @api private
	 */

	JSONPPolling.prototype.doPoll = function () {
	  var self = this;
	  var script = document.createElement('script');

	  if (this.script) {
	    this.script.parentNode.removeChild(this.script);
	    this.script = null;
	  }

	  script.async = true;
	  script.src = this.uri();
	  script.onerror = function (e) {
	    self.onError('jsonp poll error', e);
	  };

	  var insertAt = document.getElementsByTagName('script')[0];
	  if (insertAt) {
	    insertAt.parentNode.insertBefore(script, insertAt);
	  } else {
	    (document.head || document.body).appendChild(script);
	  }
	  this.script = script;

	  var isUAgecko = 'undefined' !== typeof navigator && /gecko/i.test(navigator.userAgent);

	  if (isUAgecko) {
	    setTimeout(function () {
	      var iframe = document.createElement('iframe');
	      document.body.appendChild(iframe);
	      document.body.removeChild(iframe);
	    }, 100);
	  }
	};

	/**
	 * Writes with a hidden iframe.
	 *
	 * @param {String} data to send
	 * @param {Function} called upon flush.
	 * @api private
	 */

	JSONPPolling.prototype.doWrite = function (data, fn) {
	  var self = this;

	  if (!this.form) {
	    var form = document.createElement('form');
	    var area = document.createElement('textarea');
	    var id = this.iframeId = 'eio_iframe_' + this.index;
	    var iframe;

	    form.className = 'socketio';
	    form.style.position = 'absolute';
	    form.style.top = '-1000px';
	    form.style.left = '-1000px';
	    form.target = id;
	    form.method = 'POST';
	    form.setAttribute('accept-charset', 'utf-8');
	    area.name = 'd';
	    form.appendChild(area);
	    document.body.appendChild(form);

	    this.form = form;
	    this.area = area;
	  }

	  this.form.action = this.uri();

	  function complete () {
	    initIframe();
	    fn();
	  }

	  function initIframe () {
	    if (self.iframe) {
	      try {
	        self.form.removeChild(self.iframe);
	      } catch (e) {
	        self.onError('jsonp polling iframe removal error', e);
	      }
	    }

	    try {
	      // ie6 dynamic iframes with target="" support (thanks Chris Lambacher)
	      var html = '<iframe src="javascript:0" name="' + self.iframeId + '">';
	      iframe = document.createElement(html);
	    } catch (e) {
	      iframe = document.createElement('iframe');
	      iframe.name = self.iframeId;
	      iframe.src = 'javascript:0';
	    }

	    iframe.id = self.iframeId;

	    self.form.appendChild(iframe);
	    self.iframe = iframe;
	  }

	  initIframe();

	  // escape \n to prevent it from being converted into \r\n by some UAs
	  // double escaping is required for escaped new lines because unescaping of new lines can be done safely on server-side
	  data = data.replace(rEscapedNewline, '\\\n');
	  this.area.value = data.replace(rNewline, '\\n');

	  try {
	    this.form.submit();
	  } catch (e) {}

	  if (this.iframe.attachEvent) {
	    this.iframe.onreadystatechange = function () {
	      if (self.iframe.readyState === 'complete') {
	        complete();
	      }
	    };
	  } else {
	    this.iframe.onload = complete;
	  }
	};


/***/ },
/* 27 */
/***/ function(module, exports, __webpack_require__) {

	/**
	 * Module dependencies.
	 */

	var Transport = __webpack_require__(8);
	var parser = __webpack_require__(9);
	var parseqs = __webpack_require__(19);
	var inherit = __webpack_require__(20);
	var yeast = __webpack_require__(21);
	var debug = __webpack_require__(22)('engine.io-client:websocket');

	var BrowserWebSocket, NodeWebSocket;

	if (typeof WebSocket !== 'undefined') {
	  BrowserWebSocket = WebSocket;
	} else if (typeof self !== 'undefined') {
	  BrowserWebSocket = self.WebSocket || self.MozWebSocket;
	}

	if (typeof window === 'undefined') {
	  try {
	    NodeWebSocket = __webpack_require__(28);
	  } catch (e) { }
	}

	/**
	 * Get either the `WebSocket` or `MozWebSocket` globals
	 * in the browser or try to resolve WebSocket-compatible
	 * interface exposed by `ws` for Node-like environment.
	 */

	var WebSocketImpl = BrowserWebSocket || NodeWebSocket;

	/**
	 * Module exports.
	 */

	module.exports = WS;

	/**
	 * WebSocket transport constructor.
	 *
	 * @api {Object} connection options
	 * @api public
	 */

	function WS (opts) {
	  var forceBase64 = (opts && opts.forceBase64);
	  if (forceBase64) {
	    this.supportsBinary = false;
	  }
	  this.perMessageDeflate = opts.perMessageDeflate;
	  this.usingBrowserWebSocket = BrowserWebSocket && !opts.forceNode;
	  this.protocols = opts.protocols;
	  if (!this.usingBrowserWebSocket) {
	    WebSocketImpl = NodeWebSocket;
	  }
	  Transport.call(this, opts);
	}

	/**
	 * Inherits from Transport.
	 */

	inherit(WS, Transport);

	/**
	 * Transport name.
	 *
	 * @api public
	 */

	WS.prototype.name = 'websocket';

	/*
	 * WebSockets support binary
	 */

	WS.prototype.supportsBinary = true;

	/**
	 * Opens socket.
	 *
	 * @api private
	 */

	WS.prototype.doOpen = function () {
	  if (!this.check()) {
	    // let probe timeout
	    return;
	  }

	  var uri = this.uri();
	  var protocols = this.protocols;

	  var opts = {};

	  if (!this.isReactNative) {
	    opts.agent = this.agent;
	    opts.perMessageDeflate = this.perMessageDeflate;

	    // SSL options for Node.js client
	    opts.pfx = this.pfx;
	    opts.key = this.key;
	    opts.passphrase = this.passphrase;
	    opts.cert = this.cert;
	    opts.ca = this.ca;
	    opts.ciphers = this.ciphers;
	    opts.rejectUnauthorized = this.rejectUnauthorized;
	  }

	  if (this.extraHeaders) {
	    opts.headers = this.extraHeaders;
	  }
	  if (this.localAddress) {
	    opts.localAddress = this.localAddress;
	  }

	  try {
	    this.ws =
	      this.usingBrowserWebSocket && !this.isReactNative
	        ? protocols
	          ? new WebSocketImpl(uri, protocols)
	          : new WebSocketImpl(uri)
	        : new WebSocketImpl(uri, protocols, opts);
	  } catch (err) {
	    return this.emit('error', err);
	  }

	  if (this.ws.binaryType === undefined) {
	    this.supportsBinary = false;
	  }

	  if (this.ws.supports && this.ws.supports.binary) {
	    this.supportsBinary = true;
	    this.ws.binaryType = 'nodebuffer';
	  } else {
	    this.ws.binaryType = 'arraybuffer';
	  }

	  this.addEventListeners();
	};

	/**
	 * Adds event listeners to the socket
	 *
	 * @api private
	 */

	WS.prototype.addEventListeners = function () {
	  var self = this;

	  this.ws.onopen = function () {
	    self.onOpen();
	  };
	  this.ws.onclose = function () {
	    self.onClose();
	  };
	  this.ws.onmessage = function (ev) {
	    self.onData(ev.data);
	  };
	  this.ws.onerror = function (e) {
	    self.onError('websocket error', e);
	  };
	};

	/**
	 * Writes data to socket.
	 *
	 * @param {Array} array of packets.
	 * @api private
	 */

	WS.prototype.write = function (packets) {
	  var self = this;
	  this.writable = false;

	  // encodePacket efficient as it uses WS framing
	  // no need for encodePayload
	  var total = packets.length;
	  for (var i = 0, l = total; i < l; i++) {
	    (function (packet) {
	      parser.encodePacket(packet, self.supportsBinary, function (data) {
	        if (!self.usingBrowserWebSocket) {
	          // always create a new object (GH-437)
	          var opts = {};
	          if (packet.options) {
	            opts.compress = packet.options.compress;
	          }

	          if (self.perMessageDeflate) {
	            var len = 'string' === typeof data ? Buffer.byteLength(data) : data.length;
	            if (len < self.perMessageDeflate.threshold) {
	              opts.compress = false;
	            }
	          }
	        }

	        // 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 (self.usingBrowserWebSocket) {
	            // TypeError is thrown when passing the second argument on Safari
	            self.ws.send(data);
	          } else {
	            self.ws.send(data, opts);
	          }
	        } catch (e) {
	          debug('websocket closed before onclose event');
	        }

	        --total || done();
	      });
	    })(packets[i]);
	  }

	  function done () {
	    self.emit('flush');

	    // fake drain
	    // defer to next tick to allow Socket to clear writeBuffer
	    setTimeout(function () {
	      self.writable = true;
	      self.emit('drain');
	    }, 0);
	  }
	};

	/**
	 * Called upon close
	 *
	 * @api private
	 */

	WS.prototype.onClose = function () {
	  Transport.prototype.onClose.call(this);
	};

	/**
	 * Closes socket.
	 *
	 * @api private
	 */

	WS.prototype.doClose = function () {
	  if (typeof this.ws !== 'undefined') {
	    this.ws.close();
	  }
	};

	/**
	 * Generates uri for connection.
	 *
	 * @api private
	 */

	WS.prototype.uri = function () {
	  var query = this.query || {};
	  var schema = this.secure ? 'wss' : 'ws';
	  var port = '';

	  // avoid port if default for schema
	  if (this.port && (('wss' === schema && Number(this.port) !== 443) ||
	    ('ws' === schema && Number(this.port) !== 80))) {
	    port = ':' + this.port;
	  }

	  // append timestamp to URI
	  if (this.timestampRequests) {
	    query[this.timestampParam] = yeast();
	  }

	  // communicate binary support capabilities
	  if (!this.supportsBinary) {
	    query.b64 = 1;
	  }

	  query = parseqs.encode(query);

	  // prepend ? to query
	  if (query.length) {
	    query = '?' + query;
	  }

	  var ipv6 = this.hostname.indexOf(':') !== -1;
	  return schema + '://' + (ipv6 ? '[' + this.hostname + ']' : this.hostname) + port + this.path + query;
	};

	/**
	 * Feature detection for WebSocket.
	 *
	 * @return {Boolean} whether this transport is available.
	 * @api public
	 */

	WS.prototype.check = function () {
	  return !!WebSocketImpl && !('__initialize' in WebSocketImpl && this.name === WS.prototype.name);
	};


/***/ },
/* 28 */
/***/ function(module, exports) {

	/* (ignored) */

/***/ },
/* 29 */
/***/ function(module, exports) {

	
	var indexOf = [].indexOf;

	module.exports = function(arr, obj){
	  if (indexOf) return arr.indexOf(obj);
	  for (var i = 0; i < arr.length; ++i) {
	    if (arr[i] === obj) return i;
	  }
	  return -1;
	};

/***/ },
/* 30 */
/***/ function(module, exports) {

	/**
	 * Parses an URI
	 *
	 * @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'
	];

	module.exports = function parseuri(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;
	    }

	    return uri;
	};


/***/ }
/******/ ])
});
;