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node_modules/socket.io-client/CHANGELOG.md

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+# [2.5.0](https://github.com/socketio/socket.io-client/compare/2.4.0...2.5.0) (2022-06-26)
+
+
+### Bug Fixes
+
+* ensure buffered events are sent in order ([991eb0b](https://github.com/Automattic/socket.io-client/commit/991eb0b0289bbbf680099e6d42b302beee7568b8))
+
+
+
+# [2.4.0](https://github.com/socketio/socket.io-client/compare/2.3.1...2.4.0) (2021-01-04)
+
+The minor bump is matching the bump of the server, but there is no new feature in this release.
+
+
+## [2.3.1](https://github.com/socketio/socket.io-client/compare/2.3.0...2.3.1) (2020-09-30)
+
+The `debug` dependency has been reverted to `~3.1.0`, as the newer versions contains ES6 syntax which breaks in IE
+browsers.
+
+Please note that this only applied to users that bundle the Socket.IO client in their application, with webpack for
+example, as the "official" bundles (in the dist/ folder) were already transpiled with babel.
+
+For webpack users, you can also take a look at the [webpack-remove-debug](https://github.com/johngodley/webpack-remove-debug)
+plugin.
+
+### Bug Fixes
+
+* fix reconnection after opening socket asynchronously ([#1253](https://github.com/socketio/socket.io-client/issues/1253)) ([050108b](https://github.com/Automattic/socket.io-client/commit/050108b2281effda086b197cf174ee2e8e1aad79))
+

node_modules/socket.io-client/LICENSE

@@ -0,0 +1,22 @@
+The MIT License (MIT)
+
+Copyright (c) 2014 Guillermo Rauch
+
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

node_modules/socket.io-client/README.md

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+
+# socket.io-client
+
+[![Build Status](https://github.com/socketio/socket.io-client/workflows/CI/badge.svg)](https://github.com/socketio/socket.io-client/actions)
+[![Dependency Status](https://david-dm.org/socketio/socket.io-client.svg)](https://david-dm.org/socketio/socket.io-client)
+[![devDependency Status](https://david-dm.org/socketio/socket.io-client/dev-status.svg)](https://david-dm.org/socketio/socket.io-client#info=devDependencies)
+[![NPM version](https://badge.fury.io/js/socket.io-client.svg)](https://www.npmjs.com/package/socket.io-client)
+![Downloads](http://img.shields.io/npm/dm/socket.io-client.svg?style=flat)
+[![](http://slack.socket.io/badge.svg?)](http://slack.socket.io)
+
+[![Sauce Test Status](https://saucelabs.com/browser-matrix/socket.svg)](https://saucelabs.com/u/socket)
+
+## How to use
+
+A standalone build of `socket.io-client` is exposed automatically by the
+socket.io server as `/socket.io/socket.io.js`. Alternatively you can
+serve the file `socket.io.js` found in the `dist` folder or include it via [CDN](https://cdn.jsdelivr.net/npm/socket.io-client@2/dist/socket.io.js).
+
+```html
+<script src="/socket.io/socket.io.js"></script>
+<script>
+  var socket = io();
+  socket.on('connect', function(){});
+  socket.on('event', function(data){});
+  socket.on('disconnect', function(){});
+</script>
+```
+
+```js
+// with ES6 import
+import io from 'socket.io-client';
+
+const socket = io();
+```
+
+A slim build (without `JSON3`, a JSON polyfill for IE6/IE7, and `debug`) is also available: `socket.io.slim.js`.
+
+Socket.IO is compatible with [browserify](http://browserify.org/) and [webpack](https://webpack.js.org/) (see example [there](https://github.com/socketio/socket.io/tree/2.0.3/examples/webpack-build)).
+
+### Node.JS (server-side usage)
+
+  Add `socket.io-client` to your `package.json` and then:
+
+  ```js
+  var socket = require('socket.io-client')('http://localhost:3000');
+  socket.on('connect', function(){});
+  socket.on('event', function(data){});
+  socket.on('disconnect', function(){});
+  ```
+
+## Debug / logging
+
+In order to see all the client debug output, run the following command on the browser console – including the desired scope – and reload your app page:
+
+```
+localStorage.debug = '*';
+```
+
+And then, filter by the scopes you're interested in. See also: https://socket.io/docs/logging-and-debugging/
+
+## API
+
+See [API](/docs/API.md)
+
+## License
+
+[MIT](/LICENSE)

node_modules/socket.io-client/dist/socket.io.dev.js.map

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node_modules/socket.io-client/dist/socket.io.js

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+/*!
+ * Socket.IO v2.5.0
+ * (c) 2014-2021 Guillermo Rauch
+ * Released under the MIT License.
+ */
+!function(t,e){"object"==typeof exports&&"object"==typeof module?module.exports=e():"function"==typeof define&&define.amd?define([],e):"object"==typeof exports?exports.io=e():t.io=e()}(this,function(){return function(t){function e(r){if(n[r])return n[r].exports;var o=n[r]={exports:{},id:r,loaded:!1};return t[r].call(o.exports,o,o.exports,e),o.loaded=!0,o.exports}var n={};return e.m=t,e.c=n,e.p="",e(0)}([function(t,e,n){function r(t,e){"object"==typeof t&&(e=t,t=void 0),e=e||{};var n,r=o(t),i=r.source,p=r.id,u=r.path,h=c[p]&&u in c[p].nsps,f=e.forceNew||e["force new connection"]||!1===e.multiplex||h;return f?(a("ignoring socket cache for %s",i),n=s(i,e)):(c[p]||(a("new io instance for %s",i),c[p]=s(i,e)),n=c[p]),r.query&&!e.query&&(e.query=r.query),n.socket(r.path,e)}var o=n(1),i=n(7),s=n(12),a=n(3)("socket.io-client");t.exports=e=r;var c=e.managers={};e.protocol=i.protocol,e.connect=r,e.Manager=n(12),e.Socket=n(37)},function(t,e,n){function r(t,e){var n=t;e=e||"undefined"!=typeof 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@@ -0,0 +1 @@
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7863bcd206341bc7952a","webpack:///./lib/index.js","webpack:///./lib/url.js","webpack:///./~/parseuri/index.js","webpack:///./support/noop.js","webpack:///./~/socket.io-parser/index.js","webpack:///./~/component-emitter/index.js","webpack:///./~/socket.io-parser/binary.js","webpack:///./~/isarray/index.js","webpack:///./~/socket.io-parser/is-buffer.js","webpack:///./lib/manager.js","webpack:///./~/engine.io-client/lib/index.js","webpack:///./~/engine.io-client/lib/socket.js","webpack:///./~/engine.io-client/lib/transports/index.js","webpack:///./~/engine.io-client/lib/xmlhttprequest.js","webpack:///./~/has-cors/index.js","webpack:///./~/engine.io-client/lib/globalThis.browser.js","webpack:///./~/engine.io-client/lib/transports/polling-xhr.js","webpack:///./~/engine.io-client/lib/transports/polling.js","webpack:///./~/engine.io-client/lib/transport.js","webpack:///./~/engine.io-parser/lib/browser.js","webpack:///./~/engine.io-parser/lib/keys.js","webpack:///./~/has-binary2/index.js","webpack:///./~/arraybuffer.slice/index.js","webpack:///./~/after/index.js","webpack:///./~/engine.io-parser/lib/utf8.js","webpack:///./~/engine.io-parser/~/base64-arraybuffer/lib/base64-arraybuffer.js","webpack:///./~/blob/index.js","webpack:///./~/parseqs/index.js","webpack:///./~/component-inherit/index.js","webpack:///./~/yeast/index.js","webpack:///./~/engine.io-client/lib/transports/polling-jsonp.js","webpack:///./~/engine.io-client/lib/transports/websocket.js","webpack:///./~/indexof/index.js","webpack:///./lib/socket.js","webpack:///./~/to-array/index.js","webpack:///./lib/on.js","webpack:///./~/component-bind/index.js","webpack:///./~/backo2/index.js"],"names":["root","factory","exports","module","define","amd","this","modules","__webpack_require__","moduleId","installedModules","id","loaded","call","m","c","p","lookup","uri","opts","_typeof","undefined","io","parsed","url","source","path","sameNamespace","cache","nsps","newConnection","forceNew","multiplex","Manager","query","socket","Symbol","iterator","obj","constructor","prototype","parser","managers","protocol","connect","Socket","loc","location","host","charAt","test","parseuri","port","ipv6","indexOf","href","pathNames","regx","names","replace","split","substr","length","splice","queryKey","data","$0","$1","$2","re","parts","str","src","b","e","substring","exec","i","authority","ipv6uri","Encoder","encodeAsString","type","BINARY_EVENT","BINARY_ACK","attachments","nsp","payload","tryStringify","ERROR_PACKET","JSON","stringify","encodeAsBinary","callback","writeEncoding","bloblessData","deconstruction","binary","deconstructPacket","pack","packet","buffers","unshift","removeBlobs","Decoder","reconstructor","decodeString","Number","types","error","buf","Error","next","tryParse","isPayloadValid","ERROR","isArray","parse","BinaryReconstructor","reconPack","msg","Emitter","isBuf","CONNECT","DISCONNECT","EVENT","ACK","encode","encoding","add","emit","base64","takeBinaryData","destroy","finishedReconstruction","binData","push","reconstructPacket","mixin","key","on","addEventListener","event","fn","_callbacks","once","off","apply","arguments","removeListener","removeAllListeners","removeEventListener","callbacks","cb","args","Array","slice","len","listeners","hasListeners","_deconstructPacket","placeholder","_placeholder","num","newData","Date","_reconstructPacket","toString","Object","withNativeBlob","Blob","withNativeFile","File","packetData","_removeBlobs","curKey","containingObject","pendingBlobs","fileReader","FileReader","onload","result","readAsArrayBuffer","arr","withNativeBuffer","Buffer","isBuffer","withNativeArrayBuffer","ArrayBuffer","isView","buffer","subs","reconnection","reconnectionAttempts","Infinity","reconnectionDelay","reconnectionDelayMax","randomizationFactor","backoff","Backoff","min","max","jitter","timeout","readyState","connecting","lastPing","packetBuffer","_parser","encoder","decoder","autoConnect","open","eio","bind","has","hasOwnProperty","emitAll","updateSocketIds","generateId","engine","v","_reconnection","_reconnectionAttempts","_reconnectionDelay","setMin","_randomizationFactor","setJitter","_reconnectionDelayMax","setMax","_timeout","maybeReconnectOnOpen","reconnecting","attempts","reconnect","self","skipReconnect","openSub","onopen","errorSub","cleanup","err","timer","setTimeout","close","clearTimeout","onping","onpong","ondata","ondecoded","onerror","onConnecting","index","encodedPackets","write","options","processPacketQueue","shift","subsLength","sub","disconnect","reset","onclose","reason","delay","duration","onreconnect","attempt","hostname","secure","agent","parseqs","decode","upgrade","forceJSONP","jsonp","forceBase64","enablesXDR","withCredentials","timestampParam","timestampRequests","transports","transportOptions","writeBuffer","prevBufferLen","policyPort","rememberUpgrade","binaryType","onlyBinaryULine truncated

node_modules/socket.io-client/lib/index.js

@@ -0,0 +1,94 @@
+
+/**
+ * Module dependencies.
+ */
+
+var url = require('./url');
+var parser = require('socket.io-parser');
+var Manager = require('./manager');
+var debug = require('debug')('socket.io-client');
+
+/**
+ * Module exports.
+ */
+
+module.exports = exports = lookup;
+
+/**
+ * Managers cache.
+ */
+
+var cache = exports.managers = {};
+
+/**
+ * Looks up an existing `Manager` for multiplexing.
+ * If the user summons:
+ *
+ *   `io('http://localhost/a');`
+ *   `io('http://localhost/b');`
+ *
+ * We reuse the existing instance based on same scheme/port/host,
+ * and we initialize sockets for each namespace.
+ *
+ * @api public
+ */
+
+function lookup (uri, opts) {
+  if (typeof uri === 'object') {
+    opts = uri;
+    uri = undefined;
+  }
+
+  opts = opts || {};
+
+  var parsed = url(uri);
+  var source = parsed.source;
+  var id = parsed.id;
+  var path = parsed.path;
+  var sameNamespace = cache[id] && path in cache[id].nsps;
+  var newConnection = opts.forceNew || opts['force new connection'] ||
+                      false === opts.multiplex || sameNamespace;
+
+  var io;
+
+  if (newConnection) {
+    debug('ignoring socket cache for %s', source);
+    io = Manager(source, opts);
+  } else {
+    if (!cache[id]) {
+      debug('new io instance for %s', source);
+      cache[id] = Manager(source, opts);
+    }
+    io = cache[id];
+  }
+  if (parsed.query && !opts.query) {
+    opts.query = parsed.query;
+  }
+  return io.socket(parsed.path, opts);
+}
+
+/**
+ * Protocol version.
+ *
+ * @api public
+ */
+
+exports.protocol = parser.protocol;
+
+/**
+ * `connect`.
+ *
+ * @param {String} uri
+ * @api public
+ */
+
+exports.connect = lookup;
+
+/**
+ * Expose constructors for standalone build.
+ *
+ * @api public
+ */
+
+exports.Manager = require('./manager');
+exports.Socket = require('./socket');

node_modules/socket.io-client/lib/manager.js

@@ -0,0 +1,577 @@
+
+/**
+ * Module dependencies.
+ */
+
+var eio = require('engine.io-client');
+var Socket = require('./socket');
+var Emitter = require('component-emitter');
+var parser = require('socket.io-parser');
+var on = require('./on');
+var bind = require('component-bind');
+var debug = require('debug')('socket.io-client:manager');
+var indexOf = require('indexof');
+var Backoff = require('backo2');
+
+/**
+ * IE6+ hasOwnProperty
+ */
+
+var has = Object.prototype.hasOwnProperty;
+
+/**
+ * Module exports
+ */
+
+module.exports = Manager;
+
+/**
+ * `Manager` constructor.
+ *
+ * @param {String} engine instance or engine uri/opts
+ * @param {Object} options
+ * @api public
+ */
+
+function Manager (uri, opts) {
+  if (!(this instanceof Manager)) return new Manager(uri, opts);
+  if (uri && ('object' === typeof uri)) {
+    opts = uri;
+    uri = undefined;
+  }
+  opts = opts || {};
+
+  opts.path = opts.path || '/socket.io';
+  this.nsps = {};
+  this.subs = [];
+  this.opts = opts;
+  this.reconnection(opts.reconnection !== false);
+  this.reconnectionAttempts(opts.reconnectionAttempts || Infinity);
+  this.reconnectionDelay(opts.reconnectionDelay || 1000);
+  this.reconnectionDelayMax(opts.reconnectionDelayMax || 5000);
+  this.randomizationFactor(opts.randomizationFactor || 0.5);
+  this.backoff = new Backoff({
+    min: this.reconnectionDelay(),
+    max: this.reconnectionDelayMax(),
+    jitter: this.randomizationFactor()
+  });
+  this.timeout(null == opts.timeout ? 20000 : opts.timeout);
+  this.readyState = 'closed';
+  this.uri = uri;
+  this.connecting = [];
+  this.lastPing = null;
+  this.encoding = false;
+  this.packetBuffer = [];
+  var _parser = opts.parser || parser;
+  this.encoder = new _parser.Encoder();
+  this.decoder = new _parser.Decoder();
+  this.autoConnect = opts.autoConnect !== false;
+  if (this.autoConnect) this.open();
+}
+
+/**
+ * Propagate given event to sockets and emit on `this`
+ *
+ * @api private
+ */
+
+Manager.prototype.emitAll = function () {
+  this.emit.apply(this, arguments);
+  for (var nsp in this.nsps) {
+    if (has.call(this.nsps, nsp)) {
+      this.nsps[nsp].emit.apply(this.nsps[nsp], arguments);
+    }
+  }
+};
+
+/**
+ * Update `socket.id` of all sockets
+ *
+ * @api private
+ */
+
+Manager.prototype.updateSocketIds = function () {
+  for (var nsp in this.nsps) {
+    if (has.call(this.nsps, nsp)) {
+      this.nsps[nsp].id = this.generateId(nsp);
+    }
+  }
+};
+
+/**
+ * generate `socket.id` for the given `nsp`
+ *
+ * @param {String} nsp
+ * @return {String}
+ * @api private
+ */
+
+Manager.prototype.generateId = function (nsp) {
+  return (nsp === '/' ? '' : (nsp + '#')) + this.engine.id;
+};
+
+/**
+ * Mix in `Emitter`.
+ */
+
+Emitter(Manager.prototype);
+
+/**
+ * Sets the `reconnection` config.
+ *
+ * @param {Boolean} true/false if it should automatically reconnect
+ * @return {Manager} self or value
+ * @api public
+ */
+
+Manager.prototype.reconnection = function (v) {
+  if (!arguments.length) return this._reconnection;
+  this._reconnection = !!v;
+  return this;
+};
+
+/**
+ * Sets the reconnection attempts config.
+ *
+ * @param {Number} max reconnection attempts before giving up
+ * @return {Manager} self or value
+ * @api public
+ */
+
+Manager.prototype.reconnectionAttempts = function (v) {
+  if (!arguments.length) return this._reconnectionAttempts;
+  this._reconnectionAttempts = v;
+  return this;
+};
+
+/**
+ * Sets the delay between reconnections.
+ *
+ * @param {Number} delay
+ * @return {Manager} self or value
+ * @api public
+ */
+
+Manager.prototype.reconnectionDelay = function (v) {
+  if (!arguments.length) return this._reconnectionDelay;
+  this._reconnectionDelay = v;
+  this.backoff && this.backoff.setMin(v);
+  return this;
+};
+
+Manager.prototype.randomizationFactor = function (v) {
+  if (!arguments.length) return this._randomizationFactor;
+  this._randomizationFactor = v;
+  this.backoff && this.backoff.setJitter(v);
+  return this;
+};
+
+/**
+ * Sets the maximum delay between reconnections.
+ *
+ * @param {Number} delay
+ * @return {Manager} self or value
+ * @api public
+ */
+
+Manager.prototype.reconnectionDelayMax = function (v) {
+  if (!arguments.length) return this._reconnectionDelayMax;
+  this._reconnectionDelayMax = v;
+  this.backoff && this.backoff.setMax(v);
+  return this;
+};
+
+/**
+ * Sets the connection timeout. `false` to disable
+ *
+ * @return {Manager} self or value
+ * @api public
+ */
+
+Manager.prototype.timeout = function (v) {
+  if (!arguments.length) return this._timeout;
+  this._timeout = v;
+  return this;
+};
+
+/**
+ * Starts trying to reconnect if reconnection is enabled and we have not
+ * started reconnecting yet
+ *
+ * @api private
+ */
+
+Manager.prototype.maybeReconnectOnOpen = function () {
+  // Only try to reconnect if it's the first time we're connecting
+  if (!this.reconnecting && this._reconnection && this.backoff.attempts === 0) {
+    // keeps reconnection from firing twice for the same reconnection loop
+    this.reconnect();
+  }
+};
+
+/**
+ * Sets the current transport `socket`.
+ *
+ * @param {Function} optional, callback
+ * @return {Manager} self
+ * @api public
+ */
+
+Manager.prototype.open =
+Manager.prototype.connect = function (fn, opts) {
+  debug('readyState %s', this.readyState);
+  if (~this.readyState.indexOf('open')) return this;
+
+  debug('opening %s', this.uri);
+  this.engine = eio(this.uri, this.opts);
+  var socket = this.engine;
+  var self = this;
+  this.readyState = 'opening';
+  this.skipReconnect = false;
+
+  // emit `open`
+  var openSub = on(socket, 'open', function () {
+    self.onopen();
+    fn && fn();
+  });
+
+  // emit `connect_error`
+  var errorSub = on(socket, 'error', function (data) {
+    debug('connect_error');
+    self.cleanup();
+    self.readyState = 'closed';
+    self.emitAll('connect_error', data);
+    if (fn) {
+      var err = new Error('Connection error');
+      err.data = data;
+      fn(err);
+    } else {
+      // Only do this if there is no fn to handle the error
+      self.maybeReconnectOnOpen();
+    }
+  });
+
+  // emit `connect_timeout`
+  if (false !== this._timeout) {
+    var timeout = this._timeout;
+    debug('connect attempt will timeout after %d', timeout);
+
+    if (timeout === 0) {
+      openSub.destroy(); // prevents a race condition with the 'open' event
+    }
+
+    // set timer
+    var timer = setTimeout(function () {
+      debug('connect attempt timed out after %d', timeout);
+      openSub.destroy();
+      socket.close();
+      socket.emit('error', 'timeout');
+      self.emitAll('connect_timeout', timeout);
+    }, timeout);
+
+    this.subs.push({
+      destroy: function () {
+        clearTimeout(timer);
+      }
+    });
+  }
+
+  this.subs.push(openSub);
+  this.subs.push(errorSub);
+
+  return this;
+};
+
+/**
+ * Called upon transport open.
+ *
+ * @api private
+ */
+
+Manager.prototype.onopen = function () {
+  debug('open');
+
+  // clear old subs
+  this.cleanup();
+
+  // mark as open
+  this.readyState = 'open';
+  this.emit('open');
+
+  // add new subs
+  var socket = this.engine;
+  this.subs.push(on(socket, 'data', bind(this, 'ondata')));
+  this.subs.push(on(socket, 'ping', bind(this, 'onping')));
+  this.subs.push(on(socket, 'pong', bind(this, 'onpong')));
+  this.subs.push(on(socket, 'error', bind(this, 'onerror')));
+  this.subs.push(on(socket, 'close', bind(this, 'onclose')));
+  this.subs.push(on(this.decoder, 'decoded', bind(this, 'ondecoded')));
+};
+
+/**
+ * Called upon a ping.
+ *
+ * @api private
+ */
+
+Manager.prototype.onping = function () {
+  this.lastPing = new Date();
+  this.emitAll('ping');
+};
+
+/**
+ * Called upon a packet.
+ *
+ * @api private
+ */
+
+Manager.prototype.onpong = function () {
+  this.emitAll('pong', new Date() - this.lastPing);
+};
+
+/**
+ * Called with data.
+ *
+ * @api private
+ */
+
+Manager.prototype.ondata = function (data) {
+  this.decoder.add(data);
+};
+
+/**
+ * Called when parser fully decodes a packet.
+ *
+ * @api private
+ */
+
+Manager.prototype.ondecoded = function (packet) {
+  this.emit('packet', packet);
+};
+
+/**
+ * Called upon socket error.
+ *
+ * @api private
+ */
+
+Manager.prototype.onerror = function (err) {
+  debug('error', err);
+  this.emitAll('error', err);
+};
+
+/**
+ * Creates a new socket for the given `nsp`.
+ *
+ * @return {Socket}
+ * @api public
+ */
+
+Manager.prototype.socket = function (nsp, opts) {
+  var socket = this.nsps[nsp];
+  if (!socket) {
+    socket = new Socket(this, nsp, opts);
+    this.nsps[nsp] = socket;
+    var self = this;
+    socket.on('connecting', onConnecting);
+    socket.on('connect', function () {
+      socket.id = self.generateId(nsp);
+    });
+
+    if (this.autoConnect) {
+      // manually call here since connecting event is fired before listening
+      onConnecting();
+    }
+  }
+
+  function onConnecting () {
+    if (!~indexOf(self.connecting, socket)) {
+      self.connecting.push(socket);
+    }
+  }
+
+  return socket;
+};
+
+/**
+ * Called upon a socket close.
+ *
+ * @param {Socket} socket
+ */
+
+Manager.prototype.destroy = function (socket) {
+  var index = indexOf(this.connecting, socket);
+  if (~index) this.connecting.splice(index, 1);
+  if (this.connecting.length) return;
+
+  this.close();
+};
+
+/**
+ * Writes a packet.
+ *
+ * @param {Object} packet
+ * @api private
+ */
+
+Manager.prototype.packet = function (packet) {
+  debug('writing packet %j', packet);
+  var self = this;
+  if (packet.query && packet.type === 0) packet.nsp += '?' + packet.query;
+
+  if (!self.encoding) {
+    // encode, then write to engine with result
+    self.encoding = true;
+    this.encoder.encode(packet, function (encodedPackets) {
+      for (var i = 0; i < encodedPackets.length; i++) {
+        self.engine.write(encodedPackets[i], packet.options);
+      }
+      self.encoding = false;
+      self.processPacketQueue();
+    });
+  } else { // add packet to the queue
+    self.packetBuffer.push(packet);
+  }
+};
+
+/**
+ * If packet buffer is non-empty, begins encoding the
+ * next packet in line.
+ *
+ * @api private
+ */
+
+Manager.prototype.processPacketQueue = function () {
+  if (this.packetBuffer.length > 0 && !this.encoding) {
+    var pack = this.packetBuffer.shift();
+    this.packet(pack);
+  }
+};
+
+/**
+ * Clean up transport subscriptions and packet buffer.
+ *
+ * @api private
+ */
+
+Manager.prototype.cleanup = function () {
+  debug('cleanup');
+
+  var subsLength = this.subs.length;
+  for (var i = 0; i < subsLength; i++) {
+    var sub = this.subs.shift();
+    sub.destroy();
+  }
+
+  this.packetBuffer = [];
+  this.encoding = false;
+  this.lastPing = null;
+
+  this.decoder.destroy();
+};
+
+/**
+ * Close the current socket.
+ *
+ * @api private
+ */
+
+Manager.prototype.close =
+Manager.prototype.disconnect = function () {
+  debug('disconnect');
+  this.skipReconnect = true;
+  this.reconnecting = false;
+  if ('opening' === this.readyState) {
+    // `onclose` will not fire because
+    // an open event never happened
+    this.cleanup();
+  }
+  this.backoff.reset();
+  this.readyState = 'closed';
+  if (this.engine) this.engine.close();
+};
+
+/**
+ * Called upon engine close.
+ *
+ * @api private
+ */
+
+Manager.prototype.onclose = function (reason) {
+  debug('onclose');
+
+  this.cleanup();
+  this.backoff.reset();
+  this.readyState = 'closed';
+  this.emit('close', reason);
+
+  if (this._reconnection && !this.skipReconnect) {
+    this.reconnect();
+  }
+};
+
+/**
+ * Attempt a reconnection.
+ *
+ * @api private
+ */
+
+Manager.prototype.reconnect = function () {
+  if (this.reconnecting || this.skipReconnect) return this;
+
+  var self = this;
+
+  if (this.backoff.attempts >= this._reconnectionAttempts) {
+    debug('reconnect failed');
+    this.backoff.reset();
+    this.emitAll('reconnect_failed');
+    this.reconnecting = false;
+  } else {
+    var delay = this.backoff.duration();
+    debug('will wait %dms before reconnect attempt', delay);
+
+    this.reconnecting = true;
+    var timer = setTimeout(function () {
+      if (self.skipReconnect) return;
+
+      debug('attempting reconnect');
+      self.emitAll('reconnect_attempt', self.backoff.attempts);
+      self.emitAll('reconnecting', self.backoff.attempts);
+
+      // check again for the case socket closed in above events
+      if (self.skipReconnect) return;
+
+      self.open(function (err) {
+        if (err) {
+          debug('reconnect attempt error');
+          self.reconnecting = false;
+          self.reconnect();
+          self.emitAll('reconnect_error', err.data);
+        } else {
+          debug('reconnect success');
+          self.onreconnect();
+        }
+      });
+    }, delay);
+
+    this.subs.push({
+      destroy: function () {
+        clearTimeout(timer);
+      }
+    });
+  }
+};
+
+/**
+ * Called upon successful reconnect.
+ *
+ * @api private
+ */
+
+Manager.prototype.onreconnect = function () {
+  var attempt = this.backoff.attempts;
+  this.reconnecting = false;
+  this.backoff.reset();
+  this.updateSocketIds();
+  this.emitAll('reconnect', attempt);
+};

node_modules/socket.io-client/lib/on.js

@@ -0,0 +1,24 @@
+
+/**
+ * Module exports.
+ */
+
+module.exports = on;
+
+/**
+ * Helper for subscriptions.
+ *
+ * @param {Object|EventEmitter} obj with `Emitter` mixin or `EventEmitter`
+ * @param {String} event name
+ * @param {Function} callback
+ * @api public
+ */
+
+function on (obj, ev, fn) {
+  obj.on(ev, fn);
+  return {
+    destroy: function () {
+      obj.removeListener(ev, fn);
+    }
+  };
+}

node_modules/socket.io-client/lib/socket.js

@@ -0,0 +1,438 @@
+
+/**
+ * Module dependencies.
+ */
+
+var parser = require('socket.io-parser');
+var Emitter = require('component-emitter');
+var toArray = require('to-array');
+var on = require('./on');
+var bind = require('component-bind');
+var debug = require('debug')('socket.io-client:socket');
+var parseqs = require('parseqs');
+var hasBin = require('has-binary2');
+
+/**
+ * Module exports.
+ */
+
+module.exports = exports = Socket;
+
+/**
+ * Internal events (blacklisted).
+ * These events can't be emitted by the user.
+ *
+ * @api private
+ */
+
+var events = {
+  connect: 1,
+  connect_error: 1,
+  connect_timeout: 1,
+  connecting: 1,
+  disconnect: 1,
+  error: 1,
+  reconnect: 1,
+  reconnect_attempt: 1,
+  reconnect_failed: 1,
+  reconnect_error: 1,
+  reconnecting: 1,
+  ping: 1,
+  pong: 1
+};
+
+/**
+ * Shortcut to `Emitter#emit`.
+ */
+
+var emit = Emitter.prototype.emit;
+
+/**
+ * `Socket` constructor.
+ *
+ * @api public
+ */
+
+function Socket (io, nsp, opts) {
+  this.io = io;
+  this.nsp = nsp;
+  this.json = this; // compat
+  this.ids = 0;
+  this.acks = {};
+  this.receiveBuffer = [];
+  this.sendBuffer = [];
+  this.connected = false;
+  this.disconnected = true;
+  this.flags = {};
+  if (opts && opts.query) {
+    this.query = opts.query;
+  }
+  if (this.io.autoConnect) this.open();
+}
+
+/**
+ * Mix in `Emitter`.
+ */
+
+Emitter(Socket.prototype);
+
+/**
+ * Subscribe to open, close and packet events
+ *
+ * @api private
+ */
+
+Socket.prototype.subEvents = function () {
+  if (this.subs) return;
+
+  var io = this.io;
+  this.subs = [
+    on(io, 'open', bind(this, 'onopen')),
+    on(io, 'packet', bind(this, 'onpacket')),
+    on(io, 'close', bind(this, 'onclose'))
+  ];
+};
+
+/**
+ * "Opens" the socket.
+ *
+ * @api public
+ */
+
+Socket.prototype.open =
+Socket.prototype.connect = function () {
+  if (this.connected) return this;
+
+  this.subEvents();
+  if (!this.io.reconnecting) this.io.open(); // ensure open
+  if ('open' === this.io.readyState) this.onopen();
+  this.emit('connecting');
+  return this;
+};
+
+/**
+ * Sends a `message` event.
+ *
+ * @return {Socket} self
+ * @api public
+ */
+
+Socket.prototype.send = function () {
+  var args = toArray(arguments);
+  args.unshift('message');
+  this.emit.apply(this, args);
+  return this;
+};
+
+/**
+ * Override `emit`.
+ * If the event is in `events`, it's emitted normally.
+ *
+ * @param {String} event name
+ * @return {Socket} self
+ * @api public
+ */
+
+Socket.prototype.emit = function (ev) {
+  if (events.hasOwnProperty(ev)) {
+    emit.apply(this, arguments);
+    return this;
+  }
+
+  var args = toArray(arguments);
+  var packet = {
+    type: (this.flags.binary !== undefined ? this.flags.binary : hasBin(args)) ? parser.BINARY_EVENT : parser.EVENT,
+    data: args
+  };
+
+  packet.options = {};
+  packet.options.compress = !this.flags || false !== this.flags.compress;
+
+  // event ack callback
+  if ('function' === typeof args[args.length - 1]) {
+    debug('emitting packet with ack id %d', this.ids);
+    this.acks[this.ids] = args.pop();
+    packet.id = this.ids++;
+  }
+
+  if (this.connected) {
+    this.packet(packet);
+  } else {
+    this.sendBuffer.push(packet);
+  }
+
+  this.flags = {};
+
+  return this;
+};
+
+/**
+ * Sends a packet.
+ *
+ * @param {Object} packet
+ * @api private
+ */
+
+Socket.prototype.packet = function (packet) {
+  packet.nsp = this.nsp;
+  this.io.packet(packet);
+};
+
+/**
+ * Called upon engine `open`.
+ *
+ * @api private
+ */
+
+Socket.prototype.onopen = function () {
+  debug('transport is open - connecting');
+
+  // write connect packet if necessary
+  if ('/' !== this.nsp) {
+    if (this.query) {
+      var query = typeof this.query === 'object' ? parseqs.encode(this.query) : this.query;
+      debug('sending connect packet with query %s', query);
+      this.packet({type: parser.CONNECT, query: query});
+    } else {
+      this.packet({type: parser.CONNECT});
+    }
+  }
+};
+
+/**
+ * Called upon engine `close`.
+ *
+ * @param {String} reason
+ * @api private
+ */
+
+Socket.prototype.onclose = function (reason) {
+  debug('close (%s)', reason);
+  this.connected = false;
+  this.disconnected = true;
+  delete this.id;
+  this.emit('disconnect', reason);
+};
+
+/**
+ * Called with socket packet.
+ *
+ * @param {Object} packet
+ * @api private
+ */
+
+Socket.prototype.onpacket = function (packet) {
+  var sameNamespace = packet.nsp === this.nsp;
+  var rootNamespaceError = packet.type === parser.ERROR && packet.nsp === '/';
+
+  if (!sameNamespace && !rootNamespaceError) return;
+
+  switch (packet.type) {
+    case parser.CONNECT:
+      this.onconnect();
+      break;
+
+    case parser.EVENT:
+      this.onevent(packet);
+      break;
+
+    case parser.BINARY_EVENT:
+      this.onevent(packet);
+      break;
+
+    case parser.ACK:
+      this.onack(packet);
+      break;
+
+    case parser.BINARY_ACK:
+      this.onack(packet);
+      break;
+
+    case parser.DISCONNECT:
+      this.ondisconnect();
+      break;
+
+    case parser.ERROR:
+      this.emit('error', packet.data);
+      break;
+  }
+};
+
+/**
+ * Called upon a server event.
+ *
+ * @param {Object} packet
+ * @api private
+ */
+
+Socket.prototype.onevent = function (packet) {
+  var args = packet.data || [];
+  debug('emitting event %j', args);
+
+  if (null != packet.id) {
+    debug('attaching ack callback to event');
+    args.push(this.ack(packet.id));
+  }
+
+  if (this.connected) {
+    emit.apply(this, args);
+  } else {
+    this.receiveBuffer.push(args);
+  }
+};
+
+/**
+ * Produces an ack callback to emit with an event.
+ *
+ * @api private
+ */
+
+Socket.prototype.ack = function (id) {
+  var self = this;
+  var sent = false;
+  return function () {
+    // prevent double callbacks
+    if (sent) return;
+    sent = true;
+    var args = toArray(arguments);
+    debug('sending ack %j', args);
+
+    self.packet({
+      type: hasBin(args) ? parser.BINARY_ACK : parser.ACK,
+      id: id,
+      data: args
+    });
+  };
+};
+
+/**
+ * Called upon a server acknowlegement.
+ *
+ * @param {Object} packet
+ * @api private
+ */
+
+Socket.prototype.onack = function (packet) {
+  var ack = this.acks[packet.id];
+  if ('function' === typeof ack) {
+    debug('calling ack %s with %j', packet.id, packet.data);
+    ack.apply(this, packet.data);
+    delete this.acks[packet.id];
+  } else {
+    debug('bad ack %s', packet.id);
+  }
+};
+
+/**
+ * Called upon server connect.
+ *
+ * @api private
+ */
+
+Socket.prototype.onconnect = function () {
+  this.connected = true;
+  this.disconnected = false;
+  this.emitBuffered();
+  this.emit('connect');
+};
+
+/**
+ * Emit buffered events (received and emitted).
+ *
+ * @api private
+ */
+
+Socket.prototype.emitBuffered = function () {
+  var i;
+  for (i = 0; i < this.receiveBuffer.length; i++) {
+    emit.apply(this, this.receiveBuffer[i]);
+  }
+  this.receiveBuffer = [];
+
+  for (i = 0; i < this.sendBuffer.length; i++) {
+    this.packet(this.sendBuffer[i]);
+  }
+  this.sendBuffer = [];
+};
+
+/**
+ * Called upon server disconnect.
+ *
+ * @api private
+ */
+
+Socket.prototype.ondisconnect = function () {
+  debug('server disconnect (%s)', this.nsp);
+  this.destroy();
+  this.onclose('io server disconnect');
+};
+
+/**
+ * Called upon forced client/server side disconnections,
+ * this method ensures the manager stops tracking us and
+ * that reconnections don't get triggered for this.
+ *
+ * @api private.
+ */
+
+Socket.prototype.destroy = function () {
+  if (this.subs) {
+    // clean subscriptions to avoid reconnections
+    for (var i = 0; i < this.subs.length; i++) {
+      this.subs[i].destroy();
+    }
+    this.subs = null;
+  }
+
+  this.io.destroy(this);
+};
+
+/**
+ * Disconnects the socket manually.
+ *
+ * @return {Socket} self
+ * @api public
+ */
+
+Socket.prototype.close =
+Socket.prototype.disconnect = function () {
+  if (this.connected) {
+    debug('performing disconnect (%s)', this.nsp);
+    this.packet({ type: parser.DISCONNECT });
+  }
+
+  // remove socket from pool
+  this.destroy();
+
+  if (this.connected) {
+    // fire events
+    this.onclose('io client disconnect');
+  }
+  return this;
+};
+
+/**
+ * Sets the compress flag.
+ *
+ * @param {Boolean} if `true`, compresses the sending data
+ * @return {Socket} self
+ * @api public
+ */
+
+Socket.prototype.compress = function (compress) {
+  this.flags.compress = compress;
+  return this;
+};
+
+/**
+ * Sets the binary flag
+ *
+ * @param {Boolean} whether the emitted data contains binary
+ * @return {Socket} self
+ * @api public
+ */
+
+Socket.prototype.binary = function (binary) {
+  this.flags.binary = binary;
+  return this;
+};

node_modules/socket.io-client/lib/url.js

@@ -0,0 +1,75 @@
+
+/**
+ * Module dependencies.
+ */
+
+var parseuri = require('parseuri');
+var debug = require('debug')('socket.io-client:url');
+
+/**
+ * Module exports.
+ */
+
+module.exports = url;
+
+/**
+ * URL parser.
+ *
+ * @param {String} url
+ * @param {Object} An object meant to mimic window.location.
+ *                 Defaults to window.location.
+ * @api public
+ */
+
+function url (uri, loc) {
+  var obj = uri;
+
+  // default to window.location
+  loc = loc || (typeof location !== 'undefined' && location);
+  if (null == uri) uri = loc.protocol + '//' + loc.host;
+
+  // relative path support
+  if ('string' === typeof uri) {
+    if ('/' === uri.charAt(0)) {
+      if ('/' === uri.charAt(1)) {
+        uri = loc.protocol + uri;
+      } else {
+        uri = loc.host + uri;
+      }
+    }
+
+    if (!/^(https?|wss?):\/\//.test(uri)) {
+      debug('protocol-less url %s', uri);
+      if ('undefined' !== typeof loc) {
+        uri = loc.protocol + '//' + uri;
+      } else {
+        uri = 'https://' + uri;
+      }
+    }
+
+    // parse
+    debug('parse %s', uri);
+    obj = parseuri(uri);
+  }
+
+  // make sure we treat `localhost:80` and `localhost` equally
+  if (!obj.port) {
+    if (/^(http|ws)$/.test(obj.protocol)) {
+      obj.port = '80';
+    } else if (/^(http|ws)s$/.test(obj.protocol)) {
+      obj.port = '443';
+    }
+  }
+
+  obj.path = obj.path || '/';
+
+  var ipv6 = obj.host.indexOf(':') !== -1;
+  var host = ipv6 ? '[' + obj.host + ']' : obj.host;
+
+  // define unique id
+  obj.id = obj.protocol + '://' + host + ':' + obj.port;
+  // define href
+  obj.href = obj.protocol + '://' + host + (loc && loc.port === obj.port ? '' : (':' + obj.port));
+
+  return obj;
+}

node_modules/socket.io-client/package.json

@@ -0,0 +1,87 @@
+{
+  "name": "socket.io-client",
+  "version": "2.5.0",
+  "keywords": [
+    "realtime",
+    "framework",
+    "websocket",
+    "tcp",
+    "events",
+    "client"
+  ],
+  "main": "./lib/index",
+  "files": [
+    "lib/",
+    "dist/"
+  ],
+  "dependencies": {
+    "backo2": "1.0.2",
+    "component-bind": "1.0.0",
+    "component-emitter": "~1.3.0",
+    "debug": "~3.1.0",
+    "engine.io-client": "~3.5.0",
+    "has-binary2": "~1.0.2",
+    "indexof": "0.0.1",
+    "parseqs": "0.0.6",
+    "parseuri": "0.0.6",
+    "socket.io-parser": "~3.3.0",
+    "to-array": "0.1.4"
+  },
+  "devDependencies": {
+    "babel-core": "^6.24.1",
+    "babel-eslint": "4.1.7",
+    "babel-loader": "7.0.0",
+    "babel-preset-es2015": "6.24.1",
+    "base64-arraybuffer": "^0.1.5",
+    "concat-stream": "^1.6.0",
+    "derequire": "^2.0.6",
+    "eslint-config-standard": "4.4.0",
+    "eslint-plugin-standard": "1.3.1",
+    "expect.js": "0.3.1",
+    "gulp": "^3.9.1",
+    "gulp-eslint": "1.1.1",
+    "gulp-file": "^0.3.0",
+    "gulp-istanbul": "^1.1.1",
+    "gulp-mocha": "^4.3.1",
+    "gulp-task-listing": "1.0.1",
+    "has-cors": "^1.1.0",
+    "imports-loader": "^0.7.1",
+    "istanbul": "^0.4.5",
+    "mocha": "^3.3.0",
+    "socket.io": "2.3.0",
+    "socket.io-browsers": "^1.0.0",
+    "strip-loader": "0.1.2",
+    "text-blob-builder": "0.0.1",
+    "webpack-merge": "4.1.2",
+    "webpack-stream": "3.2.0",
+    "zuul": "~3.11.1",
+    "zuul-builder-webpack": "^1.2.0",
+    "zuul-ngrok": "4.0.0"
+  },
+  "scripts": {
+    "test": "gulp test"
+  },
+  "contributors": [
+    {
+      "name": "Guillermo Rauch",
+      "email": "rauchg@gmail.com"
+    },
+    {
+      "name": "Arnout Kazemier",
+      "email": "info@3rd-eden.com"
+    },
+    {
+      "name": "Vladimir Dronnikov",
+      "email": "dronnikov@gmail.com"
+    },
+    {
+      "name": "Einar Otto Stangvik",
+      "email": "einaros@gmail.com"
+    }
+  ],
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/Automattic/socket.io-client.git"
+  },
+  "license": "MIT"
+}