Index: trip-planner-front/node_modules/socket.io/client-dist/socket.io.esm.min.js
===================================================================
--- trip-planner-front/node_modules/socket.io/client-dist/socket.io.esm.min.js	(revision 571e0df9a7a5e798c9941a85842f785177bedbbd)
+++ 	(revision )
@@ -1,7 +1,0 @@
-/*!
- * Socket.IO v4.4.0
- * (c) 2014-2021 Guillermo Rauch
- * Released under the MIT License.
- */
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instanceof ArrayBuffer)(t))||G&&t instanceof Blob||Q&&t instanceof File}function tt(t,e){if(!t||"object"!=typeof t)return!1;if(Array.isArray(t)){for(let e=0,s=t.length;e<s;e++)if(tt(t[e]))return!0;return!1}if(Z(t))return!0;if(t.toJSON&&"function"==typeof t.toJSON&&1===arguments.length)return tt(t.toJSON(),!0);for(const e in t)if(Object.prototype.hasOwnProperty.call(t,e)&&tt(t[e]))return!0;return!1}function et(t){const e=[],s=t.data,n=t;return n.data=st(s,e),n.attachments=e.length,{packet:n,buffers:e}}function st(t,e){if(!t)return t;if(Z(t)){const s={_placeholder:!0,num:e.length};return e.push(t),s}if(Array.isArray(t)){const s=new Array(t.length);for(let n=0;n<t.length;n++)s[n]=st(t[n],e);return s}if("object"==typeof t&&!(t instanceof Date)){const s={};for(const n in t)t.hasOwnProperty(n)&&(s[n]=st(t[n],e));return s}return t}function nt(t,e){return t.data=rt(t.data,e),t.attachments=void 0,t}function rt(t,e){if(!t)return t;if(t&&t._placeholder)return e[t.num];if(Array.isArray(t))for(let s=0;s<t.length;s++)t[s]=rt(t[s],e);else if("object"==typeof t)for(const s in t)t.hasOwnProperty(s)&&(t[s]=rt(t[s],e));return t}const it=5;var ot;!function(t){t[t.CONNECT=0]="CONNECT",t[t.DISCONNECT=1]="DISCONNECT",t[t.EVENT=2]="EVENT",t[t.ACK=3]="ACK",t[t.CONNECT_ERROR=4]="CONNECT_ERROR",t[t.BINARY_EVENT=5]="BINARY_EVENT",t[t.BINARY_ACK=6]="BINARY_ACK"}(ot||(ot={}));class at extends u{constructor(){super()}add(t){let e;if("string"==typeof t)e=this.decodeString(t),e.type===ot.BINARY_EVENT||e.type===ot.BINARY_ACK?(this.reconstructor=new ht(e),0===e.attachments&&super.emitReserved("decoded",e)):super.emitReserved("decoded",e);else{if(!Z(t)&&!t.base64)throw new Error("Unknown type: "+t);if(!this.reconstructor)throw new Error("got binary data when not reconstructing a packet");e=this.reconstructor.takeBinaryData(t),e&&(this.reconstructor=null,super.emitReserved("decoded",e))}}decodeString(t){let e=0;const s={type:Number(t.charAt(0))};if(void 0===ot[s.type])throw new Error("unknown packet type "+s.type);if(s.type===ot.BINARY_EVENT||s.type===ot.BINARY_ACK){const n=e+1;for(;"-"!==t.charAt(++e)&&e!=t.length;);const r=t.substring(n,e);if(r!=Number(r)||"-"!==t.charAt(e))throw new Error("Illegal attachments");s.attachments=Number(r)}if("/"===t.charAt(e+1)){const n=e+1;for(;++e;){if(","===t.charAt(e))break;if(e===t.length)break}s.nsp=t.substring(n,e)}else s.nsp="/";const n=t.charAt(e+1);if(""!==n&&Number(n)==n){const n=e+1;for(;++e;){const s=t.charAt(e);if(null==s||Number(s)!=s){--e;break}if(e===t.length)break}s.id=Number(t.substring(n,e+1))}if(t.charAt(++e)){const n=function(t){try{return JSON.parse(t)}catch(t){return!1}}(t.substr(e));if(!at.isPayloadValid(s.type,n))throw new Error("invalid payload");s.data=n}return s}static isPayloadValid(t,e){switch(t){case ot.CONNECT:return"object"==typeof e;case ot.DISCONNECT:return void 0===e;case ot.CONNECT_ERROR:return"string"==typeof e||"object"==typeof e;case ot.EVENT:case ot.BINARY_EVENT:return Array.isArray(e)&&e.length>0;case ot.ACK:case ot.BINARY_ACK:return Array.isArray(e)}}destroy(){this.reconstructor&&this.reconstructor.finishedReconstruction()}}class ht{constructor(t){this.packet=t,this.buffers=[],this.reconPack=t}takeBinaryData(t){if(this.buffers.push(t),this.buffers.length===this.reconPack.attachments){const t=nt(this.reconPack,this.buffers);return this.finishedReconstruction(),t}return null}finishedReconstruction(){this.reconPack=null,this.buffers=[]}}var ct=Object.freeze({__proto__:null,protocol:5,get PacketType(){return ot},Encoder:class{encode(t){return t.type!==ot.EVENT&&t.type!==ot.ACK||!tt(t)?[this.encodeAsString(t)]:(t.type=t.type===ot.EVENT?ot.BINARY_EVENT:ot.BINARY_ACK,this.encodeAsBinary(t))}encodeAsString(t){let e=""+t.type;return t.type!==ot.BINARY_EVENT&&t.type!==ot.BINARY_ACK||(e+=t.attachments+"-"),t.nsp&&"/"!==t.nsp&&(e+=t.nsp+","),null!=t.id&&(e+=t.id),null!=t.data&&(e+=JSON.stringify(t.data)),e}encodeAsBinary(t){const e=et(t),s=this.encodeAsString(e.packet),n=e.buffers;return n.unshift(s),n}},Decoder:at});function pt(t,e,s){return t.on(e,s),function(){t.off(e,s)}}const ut=Object.freeze({connect:1,connect_error:1,disconnect:1,disconnecting:1,newListener:1,removeListener:1});class lt extends u{constructor(t,e,s){super(),this.connected=!1,this.disconnected=!0,this.receiveBuffer=[],this.sendBuffer=[],this.ids=0,this.acks={},this.flags={},this.io=t,this.nsp=e,s&&s.auth&&(this.auth=s.auth),this.io._autoConnect&&this.open()}subEvents(){if(this.subs)return;const t=this.io;this.subs=[pt(t,"open",this.onopen.bind(this)),pt(t,"packet",this.onpacket.bind(this)),pt(t,"error",this.onerror.bind(this)),pt(t,"close",this.onclose.bind(this))]}get active(){return!!this.subs}connect(){return this.connected||(this.subEvents(),this.io._reconnecting||this.io.open(),"open"===this.io._readyState&&this.onopen()),this}open(){return this.connect()}send(...t){return t.unshift("message"),this.emit.apply(this,t),this}emit(t,...e){if(ut.hasOwnProperty(t))throw new Error('"'+t+'" is a reserved event name');e.unshift(t);const s={type:ot.EVENT,data:e,options:{}};if(s.options.compress=!1!==this.flags.compress,"function"==typeof e[e.length-1]){const t=this.ids++,n=e.pop();this._registerAckCallback(t,n),s.id=t}const n=this.io.engine&&this.io.engine.transport&&this.io.engine.transport.writable;return this.flags.volatile&&(!n||!this.connected)||(this.connected?this.packet(s):this.sendBuffer.push(s)),this.flags={},this}_registerAckCallback(t,e){const s=this.flags.timeout;if(void 0===s)return void(this.acks[t]=e);const n=this.io.setTimeoutFn((()=>{delete this.acks[t];for(let e=0;e<this.sendBuffer.length;e++)this.sendBuffer[e].id===t&&this.sendBuffer.splice(e,1);e.call(this,new Error("operation has timed out"))}),s);this.acks[t]=(...t)=>{this.io.clearTimeoutFn(n),e.apply(this,[null,...t])}}packet(t){t.nsp=this.nsp,this.io._packet(t)}onopen(){"function"==typeof this.auth?this.auth((t=>{this.packet({type:ot.CONNECT,data:t})})):this.packet({type:ot.CONNECT,data:this.auth})}onerror(t){this.connected||this.emitReserved("connect_error",t)}onclose(t){this.connected=!1,this.disconnected=!0,delete this.id,this.emitReserved("disconnect",t)}onpacket(t){if(t.nsp===this.nsp)switch(t.type){case ot.CONNECT:if(t.data&&t.data.sid){const e=t.data.sid;this.onconnect(e)}else this.emitReserved("connect_error",new Error("It seems you are trying to reach a Socket.IO server in v2.x with a v3.x client, but they are not compatible (more information here: https://socket.io/docs/v3/migrating-from-2-x-to-3-0/)"));break;case ot.EVENT:case ot.BINARY_EVENT:this.onevent(t);break;case ot.ACK:case ot.BINARY_ACK:this.onack(t);break;case ot.DISCONNECT:this.ondisconnect();break;case ot.CONNECT_ERROR:this.destroy();const e=new Error(t.data.message);e.data=t.data.data,this.emitReserved("connect_error",e)}}onevent(t){const e=t.data||[];null!=t.id&&e.push(this.ack(t.id)),this.connected?this.emitEvent(e):this.receiveBuffer.push(Object.freeze(e))}emitEvent(t){if(this._anyListeners&&this._anyListeners.length){const e=this._anyListeners.slice();for(const s of e)s.apply(this,t)}super.emit.apply(this,t)}ack(t){const e=this;let s=!1;return function(...n){s||(s=!0,e.packet({type:ot.ACK,id:t,data:n}))}}onack(t){const e=this.acks[t.id];"function"==typeof e&&(e.apply(this,t.data),delete this.acks[t.id])}onconnect(t){this.id=t,this.connected=!0,this.disconnected=!1,this.emitBuffered(),this.emitReserved("connect")}emitBuffered(){this.receiveBuffer.forEach((t=>this.emitEvent(t))),this.receiveBuffer=[],this.sendBuffer.forEach((t=>this.packet(t))),this.sendBuffer=[]}ondisconnect(){this.destroy(),this.onclose("io server disconnect")}destroy(){this.subs&&(this.subs.forEach((t=>t())),this.subs=void 0),this.io._destroy(this)}disconnect(){return this.connected&&this.packet({type:ot.DISCONNECT}),this.destroy(),this.connected&&this.onclose("io client disconnect"),this}close(){return this.disconnect()}compress(t){return this.flags.compress=t,this}get volatile(){return this.flags.volatile=!0,this}timeout(t){return this.flags.timeout=t,this}onAny(t){return this._anyListeners=this._anyListeners||[],this._anyListeners.push(t),this}prependAny(t){return this._anyListeners=this._anyListeners||[],this._anyListeners.unshift(t),this}offAny(t){if(!this._anyListeners)return this;if(t){const e=this._anyListeners;for(let s=0;s<e.length;s++)if(t===e[s])return e.splice(s,1),this}else this._anyListeners=[];return this}listenersAny(){return this._anyListeners||[]}}var dt=ft;function ft(t){t=t||{},this.ms=t.min||100,this.max=t.max||1e4,this.factor=t.factor||2,this.jitter=t.jitter>0&&t.jitter<=1?t.jitter:0,this.attempts=0}ft.prototype.duration=function(){var t=this.ms*Math.pow(this.factor,this.attempts++);if(this.jitter){var e=Math.random(),s=Math.floor(e*this.jitter*t);t=0==(1&Math.floor(10*e))?t-s:t+s}return 0|Math.min(t,this.max)},ft.prototype.reset=function(){this.attempts=0},ft.prototype.setMin=function(t){this.ms=t},ft.prototype.setMax=function(t){this.max=t},ft.prototype.setJitter=function(t){this.jitter=t};class yt extends u{constructor(t,e){var s;super(),this.nsps={},this.subs=[],t&&"object"==typeof t&&(e=t,t=void 0),(e=e||{}).path=e.path||"/socket.io",this.opts=e,p(this,e),this.reconnection(!1!==e.reconnection),this.reconnectionAttempts(e.reconnectionAttempts||1/0),this.reconnectionDelay(e.reconnectionDelay||1e3),this.reconnectionDelayMax(e.reconnectionDelayMax||5e3),this.randomizationFactor(null!==(s=e.randomizationFactor)&&void 0!==s?s:.5),this.backoff=new dt({min:this.reconnectionDelay(),max:this.reconnectionDelayMax(),jitter:this.randomizationFactor()}),this.timeout(null==e.timeout?2e4:e.timeout),this._readyState="closed",this.uri=t;const n=e.parser||ct;this.encoder=new n.Encoder,this.decoder=new n.Decoder,this._autoConnect=!1!==e.autoConnect,this._autoConnect&&this.open()}reconnection(t){return arguments.length?(this._reconnection=!!t,this):this._reconnection}reconnectionAttempts(t){return void 0===t?this._reconnectionAttempts:(this._reconnectionAttempts=t,this)}reconnectionDelay(t){var e;return void 0===t?this._reconnectionDelay:(this._reconnectionDelay=t,null===(e=this.backoff)||void 0===e||e.setMin(t),this)}randomizationFactor(t){var e;return void 0===t?this._randomizationFactor:(this._randomizationFactor=t,null===(e=this.backoff)||void 0===e||e.setJitter(t),this)}reconnectionDelayMax(t){var e;return void 0===t?this._reconnectionDelayMax:(this._reconnectionDelayMax=t,null===(e=this.backoff)||void 0===e||e.setMax(t),this)}timeout(t){return arguments.length?(this._timeout=t,this):this._timeout}maybeReconnectOnOpen(){!this._reconnecting&&this._reconnection&&0===this.backoff.attempts&&this.reconnect()}open(t){if(~this._readyState.indexOf("open"))return this;this.engine=new $(this.uri,this.opts);const e=this.engine,s=this;this._readyState="opening",this.skipReconnect=!1;const n=pt(e,"open",(function(){s.onopen(),t&&t()})),r=pt(e,"error",(e=>{s.cleanup(),s._readyState="closed",this.emitReserved("error",e),t?t(e):s.maybeReconnectOnOpen()}));if(!1!==this._timeout){const t=this._timeout;0===t&&n();const s=this.setTimeoutFn((()=>{n(),e.close(),e.emit("error",new Error("timeout"))}),t);this.opts.autoUnref&&s.unref(),this.subs.push((function(){clearTimeout(s)}))}return this.subs.push(n),this.subs.push(r),this}connect(t){return this.open(t)}onopen(){this.cleanup(),this._readyState="open",this.emitReserved("open");const t=this.engine;this.subs.push(pt(t,"ping",this.onping.bind(this)),pt(t,"data",this.ondata.bind(this)),pt(t,"error",this.onerror.bind(this)),pt(t,"close",this.onclose.bind(this)),pt(this.decoder,"decoded",this.ondecoded.bind(this)))}onping(){this.emitReserved("ping")}ondata(t){this.decoder.add(t)}ondecoded(t){this.emitReserved("packet",t)}onerror(t){this.emitReserved("error",t)}socket(t,e){let s=this.nsps[t];return s||(s=new lt(this,t,e),this.nsps[t]=s),s}_destroy(t){const e=Object.keys(this.nsps);for(const t of e){if(this.nsps[t].active)return}this._close()}_packet(t){const e=this.encoder.encode(t);for(let s=0;s<e.length;s++)this.engine.write(e[s],t.options)}cleanup(){this.subs.forEach((t=>t())),this.subs.length=0,this.decoder.destroy()}_close(){this.skipReconnect=!0,this._reconnecting=!1,this.onclose("forced close"),this.engine&&this.engine.close()}disconnect(){return this._close()}onclose(t){this.cleanup(),this.backoff.reset(),this._readyState="closed",this.emitReserved("close",t),this._reconnection&&!this.skipReconnect&&this.reconnect()}reconnect(){if(this._reconnecting||this.skipReconnect)return this;const t=this;if(this.backoff.attempts>=this._reconnectionAttempts)this.backoff.reset(),this.emitReserved("reconnect_failed"),this._reconnecting=!1;else{const e=this.backoff.duration();this._reconnecting=!0;const s=this.setTimeoutFn((()=>{t.skipReconnect||(this.emitReserved("reconnect_attempt",t.backoff.attempts),t.skipReconnect||t.open((e=>{e?(t._reconnecting=!1,t.reconnect(),this.emitReserved("reconnect_error",e)):t.onreconnect()})))}),e);this.opts.autoUnref&&s.unref(),this.subs.push((function(){clearTimeout(s)}))}}onreconnect(){const t=this.backoff.attempts;this._reconnecting=!1,this.backoff.reset(),this.emitReserved("reconnect",t)}}const mt={};function gt(t,e){"object"==typeof t&&(e=t,t=void 0);const n=function(t,e="",n){let r=t;n=n||"undefined"!=typeof location&&location,null==t&&(t=n.protocol+"//"+n.host),"string"==typeof t&&("/"===t.charAt(0)&&(t="/"===t.charAt(1)?n.protocol+t:n.host+t),/^(https?|wss?):\/\//.test(t)||(t=void 0!==n?n.protocol+"//"+t:"https://"+t),r=s(t)),r.port||(/^(http|ws)$/.test(r.protocol)?r.port="80":/^(http|ws)s$/.test(r.protocol)&&(r.port="443")),r.path=r.path||"/";const i=-1!==r.host.indexOf(":")?"["+r.host+"]":r.host;return r.id=r.protocol+"://"+i+":"+r.port+e,r.href=r.protocol+"://"+i+(n&&n.port===r.port?"":":"+r.port),r}(t,(e=e||{}).path||"/socket.io"),r=n.source,i=n.id,o=n.path,a=mt[i]&&o in mt[i].nsps;let h;return e.forceNew||e["force new connection"]||!1===e.multiplex||a?h=new yt(r,e):(mt[i]||(mt[i]=new yt(r,e)),h=mt[i]),n.query&&!e.query&&(e.query=n.queryKey),h.socket(n.path,e)}Object.assign(gt,{Manager:yt,Socket:lt,io:gt,connect:gt});export{yt as Manager,lt as Socket,gt as connect,gt as default,gt as io,it as protocol};
-//# sourceMappingURL=socket.io.esm.min.js.map
Index: trip-planner-front/node_modules/socket.io/client-dist/socket.io.esm.min.js.map
===================================================================
--- trip-planner-front/node_modules/socket.io/client-dist/socket.io.esm.min.js.map	(revision 571e0df9a7a5e798c9941a85842f785177bedbbd)
+++ 	(revision )
@@ -1,1 +1,0 @@
-{"version":3,"file":"socket.io.esm.min.js","sources":["../node_modules/parseuri/index.js","../node_modules/has-cors/index.js","../node_modules/engine.io-client/build/esm/globalThis.browser.js","../node_modules/engine.io-client/build/esm/transports/xmlhttprequest.browser.js","../node_modules/engine.io-client/build/esm/util.js","../node_modules/@socket.io/component-emitter/index.js","../node_modules/engine.io-client/node_modules/engine.io-parser/build/esm/commons.js","../node_modules/engine.io-client/node_modules/engine.io-parser/build/esm/encodePacket.browser.js","../node_modules/engine.io-client/node_modules/base64-arraybuffer/dist/base64-arraybuffer.es5.js","../node_modules/engine.io-client/node_modules/engine.io-parser/build/esm/decodePacket.browser.js","../node_modules/engine.io-client/node_modules/engine.io-parser/build/esm/index.js","../node_modules/engine.io-client/build/esm/transport.js","../node_modules/yeast/index.js","../node_modules/parseqs/index.js","../node_modules/engine.io-client/build/esm/transports/polling.js","../node_modules/engine.io-client/build/esm/transports/polling-xhr.js","../node_modules/engine.io-client/build/esm/transports/websocket-constructor.browser.js","../node_modules/engine.io-client/build/esm/transports/websocket.js","../node_modules/engine.io-client/build/esm/transports/index.js","../node_modules/engine.io-client/build/esm/socket.js","../node_modules/engine.io-client/build/esm/index.js","../node_modules/socket.io-parser/build/esm/is-binary.js","../node_modules/socket.io-parser/build/esm/binary.js","../node_modules/socket.io-parser/build/esm/index.js","../build/esm/on.js","../build/esm/socket.js","../node_modules/backo2/index.js","../build/esm/manager.js","../build/esm/index.js","../build/esm/url.js"],"sourcesContent":["/**\n * Parses an URI\n *\n * @author Steven Levithan <stevenlevithan.com> (MIT license)\n * @api private\n */\n\nvar re = /^(?:(?![^:@]+:[^:@\\/]*@)(http|https|ws|wss):\\/\\/)?((?:(([^:@]*)(?::([^:@]*))?)?@)?((?:[a-f0-9]{0,4}:){2,7}[a-f0-9]{0,4}|[^:\\/?#]*)(?::(\\d*))?)(((\\/(?:[^?#](?![^?#\\/]*\\.[^?#\\/.]+(?:[?#]|$)))*\\/?)?([^?#\\/]*))(?:\\?([^#]*))?(?:#(.*))?)/;\n\nvar parts = [\n    'source', 'protocol', 'authority', 'userInfo', 'user', 'password', 'host', 'port', 'relative', 'path', 'directory', 'file', 'query', 'anchor'\n];\n\nmodule.exports = function parseuri(str) {\n    var src = str,\n        b = str.indexOf('['),\n        e = str.indexOf(']');\n\n    if (b != -1 && e != -1) {\n        str = str.substring(0, b) + str.substring(b, e).replace(/:/g, ';') + str.substring(e, str.length);\n    }\n\n    var m = re.exec(str || ''),\n        uri = {},\n        i = 14;\n\n    while (i--) {\n        uri[parts[i]] = m[i] || '';\n    }\n\n    if (b != -1 && e != -1) {\n        uri.source = src;\n        uri.host = uri.host.substring(1, uri.host.length - 1).replace(/;/g, ':');\n        uri.authority = uri.authority.replace('[', '').replace(']', '').replace(/;/g, ':');\n        uri.ipv6uri = true;\n    }\n\n    uri.pathNames = pathNames(uri, uri['path']);\n    uri.queryKey = queryKey(uri, uri['query']);\n\n    return uri;\n};\n\nfunction pathNames(obj, path) {\n    var regx = /\\/{2,9}/g,\n        names = path.replace(regx, \"/\").split(\"/\");\n\n    if (path.substr(0, 1) == '/' || path.length === 0) {\n        names.splice(0, 1);\n    }\n    if (path.substr(path.length - 1, 1) == '/') {\n        names.splice(names.length - 1, 1);\n    }\n\n    return names;\n}\n\nfunction queryKey(uri, query) {\n    var data = {};\n\n    query.replace(/(?:^|&)([^&=]*)=?([^&]*)/g, function ($0, $1, $2) {\n        if ($1) {\n            data[$1] = $2;\n        }\n    });\n\n    return data;\n}\n","\n/**\n * Module exports.\n *\n * Logic borrowed from Modernizr:\n *\n *   - https://github.com/Modernizr/Modernizr/blob/master/feature-detects/cors.js\n */\n\ntry {\n  module.exports = typeof XMLHttpRequest !== 'undefined' &&\n    'withCredentials' in new XMLHttpRequest();\n} catch (err) {\n  // if XMLHttp support is disabled in IE then it will throw\n  // when trying to create\n  module.exports = false;\n}\n","export default (() => {\n    if (typeof self !== \"undefined\") {\n        return self;\n    }\n    else if (typeof window !== \"undefined\") {\n        return window;\n    }\n    else {\n        return Function(\"return this\")();\n    }\n})();\n","// browser shim for xmlhttprequest module\nimport hasCORS from \"has-cors\";\nimport globalThis from \"../globalThis.js\";\nexport default function (opts) {\n    const xdomain = opts.xdomain;\n    // XMLHttpRequest can be disabled on IE\n    try {\n        if (\"undefined\" !== typeof XMLHttpRequest && (!xdomain || hasCORS)) {\n            return new XMLHttpRequest();\n        }\n    }\n    catch (e) { }\n    if (!xdomain) {\n        try {\n            return new globalThis[[\"Active\"].concat(\"Object\").join(\"X\")](\"Microsoft.XMLHTTP\");\n        }\n        catch (e) { }\n    }\n}\n","import globalThis from \"./globalThis.js\";\nexport function pick(obj, ...attr) {\n    return attr.reduce((acc, k) => {\n        if (obj.hasOwnProperty(k)) {\n            acc[k] = obj[k];\n        }\n        return acc;\n    }, {});\n}\n// Keep a reference to the real timeout functions so they can be used when overridden\nconst NATIVE_SET_TIMEOUT = setTimeout;\nconst NATIVE_CLEAR_TIMEOUT = clearTimeout;\nexport function installTimerFunctions(obj, opts) {\n    if (opts.useNativeTimers) {\n        obj.setTimeoutFn = NATIVE_SET_TIMEOUT.bind(globalThis);\n        obj.clearTimeoutFn = NATIVE_CLEAR_TIMEOUT.bind(globalThis);\n    }\n    else {\n        obj.setTimeoutFn = setTimeout.bind(globalThis);\n        obj.clearTimeoutFn = clearTimeout.bind(globalThis);\n    }\n}\n","\n/**\n * Expose `Emitter`.\n */\n\nexports.Emitter = Emitter;\n\n/**\n * Initialize a new `Emitter`.\n *\n * @api public\n */\n\nfunction Emitter(obj) {\n  if (obj) return mixin(obj);\n}\n\n/**\n * Mixin the emitter properties.\n *\n * @param {Object} obj\n * @return {Object}\n * @api private\n */\n\nfunction mixin(obj) {\n  for (var key in Emitter.prototype) {\n    obj[key] = Emitter.prototype[key];\n  }\n  return obj;\n}\n\n/**\n * Listen on the given `event` with `fn`.\n *\n * @param {String} event\n * @param {Function} fn\n * @return {Emitter}\n * @api public\n */\n\nEmitter.prototype.on =\nEmitter.prototype.addEventListener = function(event, fn){\n  this._callbacks = this._callbacks || {};\n  (this._callbacks['$' + event] = this._callbacks['$' + event] || [])\n    .push(fn);\n  return this;\n};\n\n/**\n * Adds an `event` listener that will be invoked a single\n * time then automatically removed.\n *\n * @param {String} event\n * @param {Function} fn\n * @return {Emitter}\n * @api public\n */\n\nEmitter.prototype.once = function(event, fn){\n  function on() {\n    this.off(event, on);\n    fn.apply(this, arguments);\n  }\n\n  on.fn = fn;\n  this.on(event, on);\n  return this;\n};\n\n/**\n * Remove the given callback for `event` or all\n * registered callbacks.\n *\n * @param {String} event\n * @param {Function} fn\n * @return {Emitter}\n * @api public\n */\n\nEmitter.prototype.off =\nEmitter.prototype.removeListener =\nEmitter.prototype.removeAllListeners =\nEmitter.prototype.removeEventListener = function(event, fn){\n  this._callbacks = this._callbacks || {};\n\n  // all\n  if (0 == arguments.length) {\n    this._callbacks = {};\n    return this;\n  }\n\n  // specific event\n  var callbacks = this._callbacks['$' + event];\n  if (!callbacks) return this;\n\n  // remove all handlers\n  if (1 == arguments.length) {\n    delete this._callbacks['$' + event];\n    return this;\n  }\n\n  // remove specific handler\n  var cb;\n  for (var i = 0; i < callbacks.length; i++) {\n    cb = callbacks[i];\n    if (cb === fn || cb.fn === fn) {\n      callbacks.splice(i, 1);\n      break;\n    }\n  }\n\n  // Remove event specific arrays for event types that no\n  // one is subscribed for to avoid memory leak.\n  if (callbacks.length === 0) {\n    delete this._callbacks['$' + event];\n  }\n\n  return this;\n};\n\n/**\n * Emit `event` with the given args.\n *\n * @param {String} event\n * @param {Mixed} ...\n * @return {Emitter}\n */\n\nEmitter.prototype.emit = function(event){\n  this._callbacks = this._callbacks || {};\n\n  var args = new Array(arguments.length - 1)\n    , callbacks = this._callbacks['$' + event];\n\n  for (var i = 1; i < arguments.length; i++) {\n    args[i - 1] = arguments[i];\n  }\n\n  if (callbacks) {\n    callbacks = callbacks.slice(0);\n    for (var i = 0, len = callbacks.length; i < len; ++i) {\n      callbacks[i].apply(this, args);\n    }\n  }\n\n  return this;\n};\n\n// alias used for reserved events (protected method)\nEmitter.prototype.emitReserved = Emitter.prototype.emit;\n\n/**\n * Return array of callbacks for `event`.\n *\n * @param {String} event\n * @return {Array}\n * @api public\n */\n\nEmitter.prototype.listeners = function(event){\n  this._callbacks = this._callbacks || {};\n  return this._callbacks['$' + event] || [];\n};\n\n/**\n * Check if this emitter has `event` handlers.\n *\n * @param {String} event\n * @return {Boolean}\n * @api public\n */\n\nEmitter.prototype.hasListeners = function(event){\n  return !! this.listeners(event).length;\n};\n","const PACKET_TYPES = Object.create(null); // no Map = no polyfill\nPACKET_TYPES[\"open\"] = \"0\";\nPACKET_TYPES[\"close\"] = \"1\";\nPACKET_TYPES[\"ping\"] = \"2\";\nPACKET_TYPES[\"pong\"] = \"3\";\nPACKET_TYPES[\"message\"] = \"4\";\nPACKET_TYPES[\"upgrade\"] = \"5\";\nPACKET_TYPES[\"noop\"] = \"6\";\nconst PACKET_TYPES_REVERSE = Object.create(null);\nObject.keys(PACKET_TYPES).forEach(key => {\n    PACKET_TYPES_REVERSE[PACKET_TYPES[key]] = key;\n});\nconst ERROR_PACKET = { type: \"error\", data: \"parser error\" };\nexport { PACKET_TYPES, PACKET_TYPES_REVERSE, ERROR_PACKET };\n","import { PACKET_TYPES } from \"./commons.js\";\nconst withNativeBlob = typeof Blob === \"function\" ||\n    (typeof Blob !== \"undefined\" &&\n        Object.prototype.toString.call(Blob) === \"[object BlobConstructor]\");\nconst withNativeArrayBuffer = typeof ArrayBuffer === \"function\";\n// ArrayBuffer.isView method is not defined in IE10\nconst isView = obj => {\n    return typeof ArrayBuffer.isView === \"function\"\n        ? ArrayBuffer.isView(obj)\n        : obj && obj.buffer instanceof ArrayBuffer;\n};\nconst encodePacket = ({ type, data }, supportsBinary, callback) => {\n    if (withNativeBlob && data instanceof Blob) {\n        if (supportsBinary) {\n            return callback(data);\n        }\n        else {\n            return encodeBlobAsBase64(data, callback);\n        }\n    }\n    else if (withNativeArrayBuffer &&\n        (data instanceof ArrayBuffer || isView(data))) {\n        if (supportsBinary) {\n            return callback(data);\n        }\n        else {\n            return encodeBlobAsBase64(new Blob([data]), callback);\n        }\n    }\n    // plain string\n    return callback(PACKET_TYPES[type] + (data || \"\"));\n};\nconst encodeBlobAsBase64 = (data, callback) => {\n    const fileReader = new FileReader();\n    fileReader.onload = function () {\n        const content = fileReader.result.split(\",\")[1];\n        callback(\"b\" + content);\n    };\n    return fileReader.readAsDataURL(data);\n};\nexport default encodePacket;\n","/*\n * base64-arraybuffer 1.0.1 <https://github.com/niklasvh/base64-arraybuffer>\n * Copyright (c) 2021 Niklas von Hertzen <https://hertzen.com>\n * Released under MIT License\n */\nvar chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';\n// Use a lookup table to find the index.\nvar lookup = typeof Uint8Array === 'undefined' ? [] : new Uint8Array(256);\nfor (var i = 0; i < chars.length; i++) {\n    lookup[chars.charCodeAt(i)] = i;\n}\nvar encode = function (arraybuffer) {\n    var bytes = new Uint8Array(arraybuffer), i, len = bytes.length, base64 = '';\n    for (i = 0; i < len; i += 3) {\n        base64 += chars[bytes[i] >> 2];\n        base64 += chars[((bytes[i] & 3) << 4) | (bytes[i + 1] >> 4)];\n        base64 += chars[((bytes[i + 1] & 15) << 2) | (bytes[i + 2] >> 6)];\n        base64 += chars[bytes[i + 2] & 63];\n    }\n    if (len % 3 === 2) {\n        base64 = base64.substring(0, base64.length - 1) + '=';\n    }\n    else if (len % 3 === 1) {\n        base64 = base64.substring(0, base64.length - 2) + '==';\n    }\n    return base64;\n};\nvar decode = function (base64) {\n    var bufferLength = base64.length * 0.75, len = base64.length, i, p = 0, encoded1, encoded2, encoded3, encoded4;\n    if (base64[base64.length - 1] === '=') {\n        bufferLength--;\n        if (base64[base64.length - 2] === '=') {\n            bufferLength--;\n        }\n    }\n    var arraybuffer = new ArrayBuffer(bufferLength), bytes = new Uint8Array(arraybuffer);\n    for (i = 0; i < len; i += 4) {\n        encoded1 = lookup[base64.charCodeAt(i)];\n        encoded2 = lookup[base64.charCodeAt(i + 1)];\n        encoded3 = lookup[base64.charCodeAt(i + 2)];\n        encoded4 = lookup[base64.charCodeAt(i + 3)];\n        bytes[p++] = (encoded1 << 2) | (encoded2 >> 4);\n        bytes[p++] = ((encoded2 & 15) << 4) | (encoded3 >> 2);\n        bytes[p++] = ((encoded3 & 3) << 6) | (encoded4 & 63);\n    }\n    return arraybuffer;\n};\n\nexport { decode, encode };\n//# sourceMappingURL=base64-arraybuffer.es5.js.map\n","import { ERROR_PACKET, PACKET_TYPES_REVERSE } from \"./commons.js\";\nimport { decode } from \"base64-arraybuffer\";\nconst withNativeArrayBuffer = typeof ArrayBuffer === \"function\";\nconst decodePacket = (encodedPacket, binaryType) => {\n    if (typeof encodedPacket !== \"string\") {\n        return {\n            type: \"message\",\n            data: mapBinary(encodedPacket, binaryType)\n        };\n    }\n    const type = encodedPacket.charAt(0);\n    if (type === \"b\") {\n        return {\n            type: \"message\",\n            data: decodeBase64Packet(encodedPacket.substring(1), binaryType)\n        };\n    }\n    const packetType = PACKET_TYPES_REVERSE[type];\n    if (!packetType) {\n        return ERROR_PACKET;\n    }\n    return encodedPacket.length > 1\n        ? {\n            type: PACKET_TYPES_REVERSE[type],\n            data: encodedPacket.substring(1)\n        }\n        : {\n            type: PACKET_TYPES_REVERSE[type]\n        };\n};\nconst decodeBase64Packet = (data, binaryType) => {\n    if (withNativeArrayBuffer) {\n        const decoded = decode(data);\n        return mapBinary(decoded, binaryType);\n    }\n    else {\n        return { base64: true, data }; // fallback for old browsers\n    }\n};\nconst mapBinary = (data, binaryType) => {\n    switch (binaryType) {\n        case \"blob\":\n            return data instanceof ArrayBuffer ? new Blob([data]) : data;\n        case \"arraybuffer\":\n        default:\n            return data; // assuming the data is already an ArrayBuffer\n    }\n};\nexport default decodePacket;\n","import encodePacket from \"./encodePacket.js\";\nimport decodePacket from \"./decodePacket.js\";\nconst SEPARATOR = String.fromCharCode(30); // see https://en.wikipedia.org/wiki/Delimiter#ASCII_delimited_text\nconst encodePayload = (packets, callback) => {\n    // some packets may be added to the array while encoding, so the initial length must be saved\n    const length = packets.length;\n    const encodedPackets = new Array(length);\n    let count = 0;\n    packets.forEach((packet, i) => {\n        // force base64 encoding for binary packets\n        encodePacket(packet, false, encodedPacket => {\n            encodedPackets[i] = encodedPacket;\n            if (++count === length) {\n                callback(encodedPackets.join(SEPARATOR));\n            }\n        });\n    });\n};\nconst decodePayload = (encodedPayload, binaryType) => {\n    const encodedPackets = encodedPayload.split(SEPARATOR);\n    const packets = [];\n    for (let i = 0; i < encodedPackets.length; i++) {\n        const decodedPacket = decodePacket(encodedPackets[i], binaryType);\n        packets.push(decodedPacket);\n        if (decodedPacket.type === \"error\") {\n            break;\n        }\n    }\n    return packets;\n};\nexport const protocol = 4;\nexport { encodePacket, encodePayload, decodePacket, decodePayload };\n","import { decodePacket } from \"engine.io-parser\";\nimport { Emitter } from \"@socket.io/component-emitter\";\nimport { installTimerFunctions } from \"./util.js\";\nexport class Transport extends Emitter {\n    /**\n     * Transport abstract constructor.\n     *\n     * @param {Object} options.\n     * @api private\n     */\n    constructor(opts) {\n        super();\n        this.writable = false;\n        installTimerFunctions(this, opts);\n        this.opts = opts;\n        this.query = opts.query;\n        this.readyState = \"\";\n        this.socket = opts.socket;\n    }\n    /**\n     * Emits an error.\n     *\n     * @param {String} str\n     * @return {Transport} for chaining\n     * @api protected\n     */\n    onError(msg, desc) {\n        const err = new Error(msg);\n        // @ts-ignore\n        err.type = \"TransportError\";\n        // @ts-ignore\n        err.description = desc;\n        super.emit(\"error\", err);\n        return this;\n    }\n    /**\n     * Opens the transport.\n     *\n     * @api public\n     */\n    open() {\n        if (\"closed\" === this.readyState || \"\" === this.readyState) {\n            this.readyState = \"opening\";\n            this.doOpen();\n        }\n        return this;\n    }\n    /**\n     * Closes the transport.\n     *\n     * @api public\n     */\n    close() {\n        if (\"opening\" === this.readyState || \"open\" === this.readyState) {\n            this.doClose();\n            this.onClose();\n        }\n        return this;\n    }\n    /**\n     * Sends multiple packets.\n     *\n     * @param {Array} packets\n     * @api public\n     */\n    send(packets) {\n        if (\"open\" === this.readyState) {\n            this.write(packets);\n        }\n        else {\n            // this might happen if the transport was silently closed in the beforeunload event handler\n        }\n    }\n    /**\n     * Called upon open\n     *\n     * @api protected\n     */\n    onOpen() {\n        this.readyState = \"open\";\n        this.writable = true;\n        super.emit(\"open\");\n    }\n    /**\n     * Called with data.\n     *\n     * @param {String} data\n     * @api protected\n     */\n    onData(data) {\n        const packet = decodePacket(data, this.socket.binaryType);\n        this.onPacket(packet);\n    }\n    /**\n     * Called with a decoded packet.\n     *\n     * @api protected\n     */\n    onPacket(packet) {\n        super.emit(\"packet\", packet);\n    }\n    /**\n     * Called upon close.\n     *\n     * @api protected\n     */\n    onClose() {\n        this.readyState = \"closed\";\n        super.emit(\"close\");\n    }\n}\n","'use strict';\n\nvar alphabet = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-_'.split('')\n  , length = 64\n  , map = {}\n  , seed = 0\n  , i = 0\n  , prev;\n\n/**\n * Return a string representing the specified number.\n *\n * @param {Number} num The number to convert.\n * @returns {String} The string representation of the number.\n * @api public\n */\nfunction encode(num) {\n  var encoded = '';\n\n  do {\n    encoded = alphabet[num % length] + encoded;\n    num = Math.floor(num / length);\n  } while (num > 0);\n\n  return encoded;\n}\n\n/**\n * Return the integer value specified by the given string.\n *\n * @param {String} str The string to convert.\n * @returns {Number} The integer value represented by the string.\n * @api public\n */\nfunction decode(str) {\n  var decoded = 0;\n\n  for (i = 0; i < str.length; i++) {\n    decoded = decoded * length + map[str.charAt(i)];\n  }\n\n  return decoded;\n}\n\n/**\n * Yeast: A tiny growing id generator.\n *\n * @returns {String} A unique id.\n * @api public\n */\nfunction yeast() {\n  var now = encode(+new Date());\n\n  if (now !== prev) return seed = 0, prev = now;\n  return now +'.'+ encode(seed++);\n}\n\n//\n// Map each character to its index.\n//\nfor (; i < length; i++) map[alphabet[i]] = i;\n\n//\n// Expose the `yeast`, `encode` and `decode` functions.\n//\nyeast.encode = encode;\nyeast.decode = decode;\nmodule.exports = yeast;\n","/**\n * Compiles a querystring\n * Returns string representation of the object\n *\n * @param {Object}\n * @api private\n */\n\nexports.encode = function (obj) {\n  var str = '';\n\n  for (var i in obj) {\n    if (obj.hasOwnProperty(i)) {\n      if (str.length) str += '&';\n      str += encodeURIComponent(i) + '=' + encodeURIComponent(obj[i]);\n    }\n  }\n\n  return str;\n};\n\n/**\n * Parses a simple querystring into an object\n *\n * @param {String} qs\n * @api private\n */\n\nexports.decode = function(qs){\n  var qry = {};\n  var pairs = qs.split('&');\n  for (var i = 0, l = pairs.length; i < l; i++) {\n    var pair = pairs[i].split('=');\n    qry[decodeURIComponent(pair[0])] = decodeURIComponent(pair[1]);\n  }\n  return qry;\n};\n","import { Transport } from \"../transport.js\";\nimport yeast from \"yeast\";\nimport parseqs from \"parseqs\";\nimport { encodePayload, decodePayload } from \"engine.io-parser\";\nexport class Polling extends Transport {\n    constructor() {\n        super(...arguments);\n        this.polling = false;\n    }\n    /**\n     * Transport name.\n     */\n    get name() {\n        return \"polling\";\n    }\n    /**\n     * Opens the socket (triggers polling). We write a PING message to determine\n     * when the transport is open.\n     *\n     * @api private\n     */\n    doOpen() {\n        this.poll();\n    }\n    /**\n     * Pauses polling.\n     *\n     * @param {Function} callback upon buffers are flushed and transport is paused\n     * @api private\n     */\n    pause(onPause) {\n        this.readyState = \"pausing\";\n        const pause = () => {\n            this.readyState = \"paused\";\n            onPause();\n        };\n        if (this.polling || !this.writable) {\n            let total = 0;\n            if (this.polling) {\n                total++;\n                this.once(\"pollComplete\", function () {\n                    --total || pause();\n                });\n            }\n            if (!this.writable) {\n                total++;\n                this.once(\"drain\", function () {\n                    --total || pause();\n                });\n            }\n        }\n        else {\n            pause();\n        }\n    }\n    /**\n     * Starts polling cycle.\n     *\n     * @api public\n     */\n    poll() {\n        this.polling = true;\n        this.doPoll();\n        this.emit(\"poll\");\n    }\n    /**\n     * Overloads onData to detect payloads.\n     *\n     * @api private\n     */\n    onData(data) {\n        const callback = packet => {\n            // if its the first message we consider the transport open\n            if (\"opening\" === this.readyState && packet.type === \"open\") {\n                this.onOpen();\n            }\n            // if its a close packet, we close the ongoing requests\n            if (\"close\" === packet.type) {\n                this.onClose();\n                return false;\n            }\n            // otherwise bypass onData and handle the message\n            this.onPacket(packet);\n        };\n        // decode payload\n        decodePayload(data, this.socket.binaryType).forEach(callback);\n        // if an event did not trigger closing\n        if (\"closed\" !== this.readyState) {\n            // if we got data we're not polling\n            this.polling = false;\n            this.emit(\"pollComplete\");\n            if (\"open\" === this.readyState) {\n                this.poll();\n            }\n            else {\n            }\n        }\n    }\n    /**\n     * For polling, send a close packet.\n     *\n     * @api private\n     */\n    doClose() {\n        const close = () => {\n            this.write([{ type: \"close\" }]);\n        };\n        if (\"open\" === this.readyState) {\n            close();\n        }\n        else {\n            // in case we're trying to close while\n            // handshaking is in progress (GH-164)\n            this.once(\"open\", close);\n        }\n    }\n    /**\n     * Writes a packets payload.\n     *\n     * @param {Array} data packets\n     * @param {Function} drain callback\n     * @api private\n     */\n    write(packets) {\n        this.writable = false;\n        encodePayload(packets, data => {\n            this.doWrite(data, () => {\n                this.writable = true;\n                this.emit(\"drain\");\n            });\n        });\n    }\n    /**\n     * Generates uri for connection.\n     *\n     * @api private\n     */\n    uri() {\n        let query = this.query || {};\n        const schema = this.opts.secure ? \"https\" : \"http\";\n        let port = \"\";\n        // cache busting is forced\n        if (false !== this.opts.timestampRequests) {\n            query[this.opts.timestampParam] = yeast();\n        }\n        if (!this.supportsBinary && !query.sid) {\n            query.b64 = 1;\n        }\n        // avoid port if default for schema\n        if (this.opts.port &&\n            ((\"https\" === schema && Number(this.opts.port) !== 443) ||\n                (\"http\" === schema && Number(this.opts.port) !== 80))) {\n            port = \":\" + this.opts.port;\n        }\n        const encodedQuery = parseqs.encode(query);\n        const ipv6 = this.opts.hostname.indexOf(\":\") !== -1;\n        return (schema +\n            \"://\" +\n            (ipv6 ? \"[\" + this.opts.hostname + \"]\" : this.opts.hostname) +\n            port +\n            this.opts.path +\n            (encodedQuery.length ? \"?\" + encodedQuery : \"\"));\n    }\n}\n","/* global attachEvent */\nimport XMLHttpRequest from \"./xmlhttprequest.js\";\nimport globalThis from \"../globalThis.js\";\nimport { installTimerFunctions, pick } from \"../util.js\";\nimport { Emitter } from \"@socket.io/component-emitter\";\nimport { Polling } from \"./polling.js\";\n/**\n * Empty function\n */\nfunction empty() { }\nconst hasXHR2 = (function () {\n    const xhr = new XMLHttpRequest({\n        xdomain: false\n    });\n    return null != xhr.responseType;\n})();\nexport class XHR extends Polling {\n    /**\n     * XHR Polling constructor.\n     *\n     * @param {Object} opts\n     * @api public\n     */\n    constructor(opts) {\n        super(opts);\n        if (typeof location !== \"undefined\") {\n            const isSSL = \"https:\" === location.protocol;\n            let port = location.port;\n            // some user agents have empty `location.port`\n            if (!port) {\n                port = isSSL ? \"443\" : \"80\";\n            }\n            this.xd =\n                (typeof location !== \"undefined\" &&\n                    opts.hostname !== location.hostname) ||\n                    port !== opts.port;\n            this.xs = opts.secure !== isSSL;\n        }\n        /**\n         * XHR supports binary\n         */\n        const forceBase64 = opts && opts.forceBase64;\n        this.supportsBinary = hasXHR2 && !forceBase64;\n    }\n    /**\n     * Creates a request.\n     *\n     * @param {String} method\n     * @api private\n     */\n    request(opts = {}) {\n        Object.assign(opts, { xd: this.xd, xs: this.xs }, this.opts);\n        return new Request(this.uri(), opts);\n    }\n    /**\n     * Sends data.\n     *\n     * @param {String} data to send.\n     * @param {Function} called upon flush.\n     * @api private\n     */\n    doWrite(data, fn) {\n        const req = this.request({\n            method: \"POST\",\n            data: data\n        });\n        req.on(\"success\", fn);\n        req.on(\"error\", err => {\n            this.onError(\"xhr post error\", err);\n        });\n    }\n    /**\n     * Starts a poll cycle.\n     *\n     * @api private\n     */\n    doPoll() {\n        const req = this.request();\n        req.on(\"data\", this.onData.bind(this));\n        req.on(\"error\", err => {\n            this.onError(\"xhr poll error\", err);\n        });\n        this.pollXhr = req;\n    }\n}\nexport class Request extends Emitter {\n    /**\n     * Request constructor\n     *\n     * @param {Object} options\n     * @api public\n     */\n    constructor(uri, opts) {\n        super();\n        installTimerFunctions(this, opts);\n        this.opts = opts;\n        this.method = opts.method || \"GET\";\n        this.uri = uri;\n        this.async = false !== opts.async;\n        this.data = undefined !== opts.data ? opts.data : null;\n        this.create();\n    }\n    /**\n     * Creates the XHR object and sends the request.\n     *\n     * @api private\n     */\n    create() {\n        const opts = pick(this.opts, \"agent\", \"pfx\", \"key\", \"passphrase\", \"cert\", \"ca\", \"ciphers\", \"rejectUnauthorized\", \"autoUnref\");\n        opts.xdomain = !!this.opts.xd;\n        opts.xscheme = !!this.opts.xs;\n        const xhr = (this.xhr = new XMLHttpRequest(opts));\n        try {\n            xhr.open(this.method, this.uri, this.async);\n            try {\n                if (this.opts.extraHeaders) {\n                    xhr.setDisableHeaderCheck && xhr.setDisableHeaderCheck(true);\n                    for (let i in this.opts.extraHeaders) {\n                        if (this.opts.extraHeaders.hasOwnProperty(i)) {\n                            xhr.setRequestHeader(i, this.opts.extraHeaders[i]);\n                        }\n                    }\n                }\n            }\n            catch (e) { }\n            if (\"POST\" === this.method) {\n                try {\n                    xhr.setRequestHeader(\"Content-type\", \"text/plain;charset=UTF-8\");\n                }\n                catch (e) { }\n            }\n            try {\n                xhr.setRequestHeader(\"Accept\", \"*/*\");\n            }\n            catch (e) { }\n            // ie6 check\n            if (\"withCredentials\" in xhr) {\n                xhr.withCredentials = this.opts.withCredentials;\n            }\n            if (this.opts.requestTimeout) {\n                xhr.timeout = this.opts.requestTimeout;\n            }\n            xhr.onreadystatechange = () => {\n                if (4 !== xhr.readyState)\n                    return;\n                if (200 === xhr.status || 1223 === xhr.status) {\n                    this.onLoad();\n                }\n                else {\n                    // make sure the `error` event handler that's user-set\n                    // does not throw in the same tick and gets caught here\n                    this.setTimeoutFn(() => {\n                        this.onError(typeof xhr.status === \"number\" ? xhr.status : 0);\n                    }, 0);\n                }\n            };\n            xhr.send(this.data);\n        }\n        catch (e) {\n            // Need to defer since .create() is called directly from the constructor\n            // and thus the 'error' event can only be only bound *after* this exception\n            // occurs.  Therefore, also, we cannot throw here at all.\n            this.setTimeoutFn(() => {\n                this.onError(e);\n            }, 0);\n            return;\n        }\n        if (typeof document !== \"undefined\") {\n            this.index = Request.requestsCount++;\n            Request.requests[this.index] = this;\n        }\n    }\n    /**\n     * Called upon successful response.\n     *\n     * @api private\n     */\n    onSuccess() {\n        this.emit(\"success\");\n        this.cleanup();\n    }\n    /**\n     * Called if we have data.\n     *\n     * @api private\n     */\n    onData(data) {\n        this.emit(\"data\", data);\n        this.onSuccess();\n    }\n    /**\n     * Called upon error.\n     *\n     * @api private\n     */\n    onError(err) {\n        this.emit(\"error\", err);\n        this.cleanup(true);\n    }\n    /**\n     * Cleans up house.\n     *\n     * @api private\n     */\n    cleanup(fromError) {\n        if (\"undefined\" === typeof this.xhr || null === this.xhr) {\n            return;\n        }\n        this.xhr.onreadystatechange = empty;\n        if (fromError) {\n            try {\n                this.xhr.abort();\n            }\n            catch (e) { }\n        }\n        if (typeof document !== \"undefined\") {\n            delete Request.requests[this.index];\n        }\n        this.xhr = null;\n    }\n    /**\n     * Called upon load.\n     *\n     * @api private\n     */\n    onLoad() {\n        const data = this.xhr.responseText;\n        if (data !== null) {\n            this.onData(data);\n        }\n    }\n    /**\n     * Aborts the request.\n     *\n     * @api public\n     */\n    abort() {\n        this.cleanup();\n    }\n}\nRequest.requestsCount = 0;\nRequest.requests = {};\n/**\n * Aborts pending requests when unloading the window. This is needed to prevent\n * memory leaks (e.g. when using IE) and to ensure that no spurious error is\n * emitted.\n */\nif (typeof document !== \"undefined\") {\n    // @ts-ignore\n    if (typeof attachEvent === \"function\") {\n        // @ts-ignore\n        attachEvent(\"onunload\", unloadHandler);\n    }\n    else if (typeof addEventListener === \"function\") {\n        const terminationEvent = \"onpagehide\" in globalThis ? \"pagehide\" : \"unload\";\n        addEventListener(terminationEvent, unloadHandler, false);\n    }\n}\nfunction unloadHandler() {\n    for (let i in Request.requests) {\n        if (Request.requests.hasOwnProperty(i)) {\n            Request.requests[i].abort();\n        }\n    }\n}\n","import globalThis from \"../globalThis.js\";\nexport const nextTick = (() => {\n    const isPromiseAvailable = typeof Promise === \"function\" && typeof Promise.resolve === \"function\";\n    if (isPromiseAvailable) {\n        return cb => Promise.resolve().then(cb);\n    }\n    else {\n        return (cb, setTimeoutFn) => setTimeoutFn(cb, 0);\n    }\n})();\nexport const WebSocket = globalThis.WebSocket || globalThis.MozWebSocket;\nexport const usingBrowserWebSocket = true;\nexport const defaultBinaryType = \"arraybuffer\";\n","import { Transport } from \"../transport.js\";\nimport parseqs from \"parseqs\";\nimport yeast from \"yeast\";\nimport { pick } from \"../util.js\";\nimport { defaultBinaryType, nextTick, usingBrowserWebSocket, WebSocket } from \"./websocket-constructor.js\";\nimport { encodePacket } from \"engine.io-parser\";\n// detect ReactNative environment\nconst isReactNative = typeof navigator !== \"undefined\" &&\n    typeof navigator.product === \"string\" &&\n    navigator.product.toLowerCase() === \"reactnative\";\nexport class WS extends Transport {\n    /**\n     * WebSocket transport constructor.\n     *\n     * @api {Object} connection options\n     * @api public\n     */\n    constructor(opts) {\n        super(opts);\n        this.supportsBinary = !opts.forceBase64;\n    }\n    /**\n     * Transport name.\n     *\n     * @api public\n     */\n    get name() {\n        return \"websocket\";\n    }\n    /**\n     * Opens socket.\n     *\n     * @api private\n     */\n    doOpen() {\n        if (!this.check()) {\n            // let probe timeout\n            return;\n        }\n        const uri = this.uri();\n        const protocols = this.opts.protocols;\n        // React Native only supports the 'headers' option, and will print a warning if anything else is passed\n        const opts = isReactNative\n            ? {}\n            : pick(this.opts, \"agent\", \"perMessageDeflate\", \"pfx\", \"key\", \"passphrase\", \"cert\", \"ca\", \"ciphers\", \"rejectUnauthorized\", \"localAddress\", \"protocolVersion\", \"origin\", \"maxPayload\", \"family\", \"checkServerIdentity\");\n        if (this.opts.extraHeaders) {\n            opts.headers = this.opts.extraHeaders;\n        }\n        try {\n            this.ws =\n                usingBrowserWebSocket && !isReactNative\n                    ? protocols\n                        ? new WebSocket(uri, protocols)\n                        : new WebSocket(uri)\n                    : new WebSocket(uri, protocols, opts);\n        }\n        catch (err) {\n            return this.emit(\"error\", err);\n        }\n        this.ws.binaryType = this.socket.binaryType || defaultBinaryType;\n        this.addEventListeners();\n    }\n    /**\n     * Adds event listeners to the socket\n     *\n     * @api private\n     */\n    addEventListeners() {\n        this.ws.onopen = () => {\n            if (this.opts.autoUnref) {\n                this.ws._socket.unref();\n            }\n            this.onOpen();\n        };\n        this.ws.onclose = this.onClose.bind(this);\n        this.ws.onmessage = ev => this.onData(ev.data);\n        this.ws.onerror = e => this.onError(\"websocket error\", e);\n    }\n    /**\n     * Writes data to socket.\n     *\n     * @param {Array} array of packets.\n     * @api private\n     */\n    write(packets) {\n        this.writable = false;\n        // encodePacket efficient as it uses WS framing\n        // no need for encodePayload\n        for (let i = 0; i < packets.length; i++) {\n            const packet = packets[i];\n            const lastPacket = i === packets.length - 1;\n            encodePacket(packet, this.supportsBinary, data => {\n                // always create a new object (GH-437)\n                const opts = {};\n                if (!usingBrowserWebSocket) {\n                    if (packet.options) {\n                        opts.compress = packet.options.compress;\n                    }\n                    if (this.opts.perMessageDeflate) {\n                        const len = \"string\" === typeof data ? Buffer.byteLength(data) : data.length;\n                        if (len < this.opts.perMessageDeflate.threshold) {\n                            opts.compress = false;\n                        }\n                    }\n                }\n                // Sometimes the websocket has already been closed but the browser didn't\n                // have a chance of informing us about it yet, in that case send will\n                // throw an error\n                try {\n                    if (usingBrowserWebSocket) {\n                        // TypeError is thrown when passing the second argument on Safari\n                        this.ws.send(data);\n                    }\n                    else {\n                        this.ws.send(data, opts);\n                    }\n                }\n                catch (e) {\n                }\n                if (lastPacket) {\n                    // fake drain\n                    // defer to next tick to allow Socket to clear writeBuffer\n                    nextTick(() => {\n                        this.writable = true;\n                        this.emit(\"drain\");\n                    }, this.setTimeoutFn);\n                }\n            });\n        }\n    }\n    /**\n     * Closes socket.\n     *\n     * @api private\n     */\n    doClose() {\n        if (typeof this.ws !== \"undefined\") {\n            this.ws.close();\n            this.ws = null;\n        }\n    }\n    /**\n     * Generates uri for connection.\n     *\n     * @api private\n     */\n    uri() {\n        let query = this.query || {};\n        const schema = this.opts.secure ? \"wss\" : \"ws\";\n        let port = \"\";\n        // avoid port if default for schema\n        if (this.opts.port &&\n            ((\"wss\" === schema && Number(this.opts.port) !== 443) ||\n                (\"ws\" === schema && Number(this.opts.port) !== 80))) {\n            port = \":\" + this.opts.port;\n        }\n        // append timestamp to URI\n        if (this.opts.timestampRequests) {\n            query[this.opts.timestampParam] = yeast();\n        }\n        // communicate binary support capabilities\n        if (!this.supportsBinary) {\n            query.b64 = 1;\n        }\n        const encodedQuery = parseqs.encode(query);\n        const ipv6 = this.opts.hostname.indexOf(\":\") !== -1;\n        return (schema +\n            \"://\" +\n            (ipv6 ? \"[\" + this.opts.hostname + \"]\" : this.opts.hostname) +\n            port +\n            this.opts.path +\n            (encodedQuery.length ? \"?\" + encodedQuery : \"\"));\n    }\n    /**\n     * Feature detection for WebSocket.\n     *\n     * @return {Boolean} whether this transport is available.\n     * @api public\n     */\n    check() {\n        return (!!WebSocket &&\n            !(\"__initialize\" in WebSocket && this.name === WS.prototype.name));\n    }\n}\n","import { XHR } from \"./polling-xhr.js\";\nimport { WS } from \"./websocket.js\";\nexport const transports = {\n    websocket: WS,\n    polling: XHR\n};\n","import { transports } from \"./transports/index.js\";\nimport { installTimerFunctions } from \"./util.js\";\nimport parseqs from \"parseqs\";\nimport parseuri from \"parseuri\";\nimport { Emitter } from \"@socket.io/component-emitter\";\nimport { protocol } from \"engine.io-parser\";\nexport class Socket extends Emitter {\n    /**\n     * Socket constructor.\n     *\n     * @param {String|Object} uri or options\n     * @param {Object} opts - options\n     * @api public\n     */\n    constructor(uri, opts = {}) {\n        super();\n        if (uri && \"object\" === typeof uri) {\n            opts = uri;\n            uri = null;\n        }\n        if (uri) {\n            uri = parseuri(uri);\n            opts.hostname = uri.host;\n            opts.secure = uri.protocol === \"https\" || uri.protocol === \"wss\";\n            opts.port = uri.port;\n            if (uri.query)\n                opts.query = uri.query;\n        }\n        else if (opts.host) {\n            opts.hostname = parseuri(opts.host).host;\n        }\n        installTimerFunctions(this, opts);\n        this.secure =\n            null != opts.secure\n                ? opts.secure\n                : typeof location !== \"undefined\" && \"https:\" === location.protocol;\n        if (opts.hostname && !opts.port) {\n            // if no port is specified manually, use the protocol default\n            opts.port = this.secure ? \"443\" : \"80\";\n        }\n        this.hostname =\n            opts.hostname ||\n                (typeof location !== \"undefined\" ? location.hostname : \"localhost\");\n        this.port =\n            opts.port ||\n                (typeof location !== \"undefined\" && location.port\n                    ? location.port\n                    : this.secure\n                        ? \"443\"\n                        : \"80\");\n        this.transports = opts.transports || [\"polling\", \"websocket\"];\n        this.readyState = \"\";\n        this.writeBuffer = [];\n        this.prevBufferLen = 0;\n        this.opts = Object.assign({\n            path: \"/engine.io\",\n            agent: false,\n            withCredentials: false,\n            upgrade: true,\n            timestampParam: \"t\",\n            rememberUpgrade: false,\n            rejectUnauthorized: true,\n            perMessageDeflate: {\n                threshold: 1024\n            },\n            transportOptions: {},\n            closeOnBeforeunload: true\n        }, opts);\n        this.opts.path = this.opts.path.replace(/\\/$/, \"\") + \"/\";\n        if (typeof this.opts.query === \"string\") {\n            this.opts.query = parseqs.decode(this.opts.query);\n        }\n        // set on handshake\n        this.id = null;\n        this.upgrades = null;\n        this.pingInterval = null;\n        this.pingTimeout = null;\n        // set on heartbeat\n        this.pingTimeoutTimer = null;\n        if (typeof addEventListener === \"function\") {\n            if (this.opts.closeOnBeforeunload) {\n                // Firefox closes the connection when the \"beforeunload\" event is emitted but not Chrome. This event listener\n                // ensures every browser behaves the same (no \"disconnect\" event at the Socket.IO level when the page is\n                // closed/reloaded)\n                addEventListener(\"beforeunload\", () => {\n                    if (this.transport) {\n                        // silently close the transport\n                        this.transport.removeAllListeners();\n                        this.transport.close();\n                    }\n                }, false);\n            }\n            if (this.hostname !== \"localhost\") {\n                this.offlineEventListener = () => {\n                    this.onClose(\"transport close\");\n                };\n                addEventListener(\"offline\", this.offlineEventListener, false);\n            }\n        }\n        this.open();\n    }\n    /**\n     * Creates transport of the given type.\n     *\n     * @param {String} transport name\n     * @return {Transport}\n     * @api private\n     */\n    createTransport(name) {\n        const query = clone(this.opts.query);\n        // append engine.io protocol identifier\n        query.EIO = protocol;\n        // transport name\n        query.transport = name;\n        // session id if we already have one\n        if (this.id)\n            query.sid = this.id;\n        const opts = Object.assign({}, this.opts.transportOptions[name], this.opts, {\n            query,\n            socket: this,\n            hostname: this.hostname,\n            secure: this.secure,\n            port: this.port\n        });\n        return new transports[name](opts);\n    }\n    /**\n     * Initializes transport to use and starts probe.\n     *\n     * @api private\n     */\n    open() {\n        let transport;\n        if (this.opts.rememberUpgrade &&\n            Socket.priorWebsocketSuccess &&\n            this.transports.indexOf(\"websocket\") !== -1) {\n            transport = \"websocket\";\n        }\n        else if (0 === this.transports.length) {\n            // Emit error on next tick so it can be listened to\n            this.setTimeoutFn(() => {\n                this.emitReserved(\"error\", \"No transports available\");\n            }, 0);\n            return;\n        }\n        else {\n            transport = this.transports[0];\n        }\n        this.readyState = \"opening\";\n        // Retry with the next transport if the transport is disabled (jsonp: false)\n        try {\n            transport = this.createTransport(transport);\n        }\n        catch (e) {\n            this.transports.shift();\n            this.open();\n            return;\n        }\n        transport.open();\n        this.setTransport(transport);\n    }\n    /**\n     * Sets the current transport. Disables the existing one (if any).\n     *\n     * @api private\n     */\n    setTransport(transport) {\n        if (this.transport) {\n            this.transport.removeAllListeners();\n        }\n        // set up transport\n        this.transport = transport;\n        // set up transport listeners\n        transport\n            .on(\"drain\", this.onDrain.bind(this))\n            .on(\"packet\", this.onPacket.bind(this))\n            .on(\"error\", this.onError.bind(this))\n            .on(\"close\", () => {\n            this.onClose(\"transport close\");\n        });\n    }\n    /**\n     * Probes a transport.\n     *\n     * @param {String} transport name\n     * @api private\n     */\n    probe(name) {\n        let transport = this.createTransport(name);\n        let failed = false;\n        Socket.priorWebsocketSuccess = false;\n        const onTransportOpen = () => {\n            if (failed)\n                return;\n            transport.send([{ type: \"ping\", data: \"probe\" }]);\n            transport.once(\"packet\", msg => {\n                if (failed)\n                    return;\n                if (\"pong\" === msg.type && \"probe\" === msg.data) {\n                    this.upgrading = true;\n                    this.emitReserved(\"upgrading\", transport);\n                    if (!transport)\n                        return;\n                    Socket.priorWebsocketSuccess = \"websocket\" === transport.name;\n                    this.transport.pause(() => {\n                        if (failed)\n                            return;\n                        if (\"closed\" === this.readyState)\n                            return;\n                        cleanup();\n                        this.setTransport(transport);\n                        transport.send([{ type: \"upgrade\" }]);\n                        this.emitReserved(\"upgrade\", transport);\n                        transport = null;\n                        this.upgrading = false;\n                        this.flush();\n                    });\n                }\n                else {\n                    const err = new Error(\"probe error\");\n                    // @ts-ignore\n                    err.transport = transport.name;\n                    this.emitReserved(\"upgradeError\", err);\n                }\n            });\n        };\n        function freezeTransport() {\n            if (failed)\n                return;\n            // Any callback called by transport should be ignored since now\n            failed = true;\n            cleanup();\n            transport.close();\n            transport = null;\n        }\n        // Handle any error that happens while probing\n        const onerror = err => {\n            const error = new Error(\"probe error: \" + err);\n            // @ts-ignore\n            error.transport = transport.name;\n            freezeTransport();\n            this.emitReserved(\"upgradeError\", error);\n        };\n        function onTransportClose() {\n            onerror(\"transport closed\");\n        }\n        // When the socket is closed while we're probing\n        function onclose() {\n            onerror(\"socket closed\");\n        }\n        // When the socket is upgraded while we're probing\n        function onupgrade(to) {\n            if (transport && to.name !== transport.name) {\n                freezeTransport();\n            }\n        }\n        // Remove all listeners on the transport and on self\n        const cleanup = () => {\n            transport.removeListener(\"open\", onTransportOpen);\n            transport.removeListener(\"error\", onerror);\n            transport.removeListener(\"close\", onTransportClose);\n            this.off(\"close\", onclose);\n            this.off(\"upgrading\", onupgrade);\n        };\n        transport.once(\"open\", onTransportOpen);\n        transport.once(\"error\", onerror);\n        transport.once(\"close\", onTransportClose);\n        this.once(\"close\", onclose);\n        this.once(\"upgrading\", onupgrade);\n        transport.open();\n    }\n    /**\n     * Called when connection is deemed open.\n     *\n     * @api private\n     */\n    onOpen() {\n        this.readyState = \"open\";\n        Socket.priorWebsocketSuccess = \"websocket\" === this.transport.name;\n        this.emitReserved(\"open\");\n        this.flush();\n        // we check for `readyState` in case an `open`\n        // listener already closed the socket\n        if (\"open\" === this.readyState &&\n            this.opts.upgrade &&\n            this.transport.pause) {\n            let i = 0;\n            const l = this.upgrades.length;\n            for (; i < l; i++) {\n                this.probe(this.upgrades[i]);\n            }\n        }\n    }\n    /**\n     * Handles a packet.\n     *\n     * @api private\n     */\n    onPacket(packet) {\n        if (\"opening\" === this.readyState ||\n            \"open\" === this.readyState ||\n            \"closing\" === this.readyState) {\n            this.emitReserved(\"packet\", packet);\n            // Socket is live - any packet counts\n            this.emitReserved(\"heartbeat\");\n            switch (packet.type) {\n                case \"open\":\n                    this.onHandshake(JSON.parse(packet.data));\n                    break;\n                case \"ping\":\n                    this.resetPingTimeout();\n                    this.sendPacket(\"pong\");\n                    this.emitReserved(\"ping\");\n                    this.emitReserved(\"pong\");\n                    break;\n                case \"error\":\n                    const err = new Error(\"server error\");\n                    // @ts-ignore\n                    err.code = packet.data;\n                    this.onError(err);\n                    break;\n                case \"message\":\n                    this.emitReserved(\"data\", packet.data);\n                    this.emitReserved(\"message\", packet.data);\n                    break;\n            }\n        }\n        else {\n        }\n    }\n    /**\n     * Called upon handshake completion.\n     *\n     * @param {Object} data - handshake obj\n     * @api private\n     */\n    onHandshake(data) {\n        this.emitReserved(\"handshake\", data);\n        this.id = data.sid;\n        this.transport.query.sid = data.sid;\n        this.upgrades = this.filterUpgrades(data.upgrades);\n        this.pingInterval = data.pingInterval;\n        this.pingTimeout = data.pingTimeout;\n        this.onOpen();\n        // In case open handler closes socket\n        if (\"closed\" === this.readyState)\n            return;\n        this.resetPingTimeout();\n    }\n    /**\n     * Sets and resets ping timeout timer based on server pings.\n     *\n     * @api private\n     */\n    resetPingTimeout() {\n        this.clearTimeoutFn(this.pingTimeoutTimer);\n        this.pingTimeoutTimer = this.setTimeoutFn(() => {\n            this.onClose(\"ping timeout\");\n        }, this.pingInterval + this.pingTimeout);\n        if (this.opts.autoUnref) {\n            this.pingTimeoutTimer.unref();\n        }\n    }\n    /**\n     * Called on `drain` event\n     *\n     * @api private\n     */\n    onDrain() {\n        this.writeBuffer.splice(0, this.prevBufferLen);\n        // setting prevBufferLen = 0 is very important\n        // for example, when upgrading, upgrade packet is sent over,\n        // and a nonzero prevBufferLen could cause problems on `drain`\n        this.prevBufferLen = 0;\n        if (0 === this.writeBuffer.length) {\n            this.emitReserved(\"drain\");\n        }\n        else {\n            this.flush();\n        }\n    }\n    /**\n     * Flush write buffers.\n     *\n     * @api private\n     */\n    flush() {\n        if (\"closed\" !== this.readyState &&\n            this.transport.writable &&\n            !this.upgrading &&\n            this.writeBuffer.length) {\n            this.transport.send(this.writeBuffer);\n            // keep track of current length of writeBuffer\n            // splice writeBuffer and callbackBuffer on `drain`\n            this.prevBufferLen = this.writeBuffer.length;\n            this.emitReserved(\"flush\");\n        }\n    }\n    /**\n     * Sends a message.\n     *\n     * @param {String} message.\n     * @param {Function} callback function.\n     * @param {Object} options.\n     * @return {Socket} for chaining.\n     * @api public\n     */\n    write(msg, options, fn) {\n        this.sendPacket(\"message\", msg, options, fn);\n        return this;\n    }\n    send(msg, options, fn) {\n        this.sendPacket(\"message\", msg, options, fn);\n        return this;\n    }\n    /**\n     * Sends a packet.\n     *\n     * @param {String} packet type.\n     * @param {String} data.\n     * @param {Object} options.\n     * @param {Function} callback function.\n     * @api private\n     */\n    sendPacket(type, data, options, fn) {\n        if (\"function\" === typeof data) {\n            fn = data;\n            data = undefined;\n        }\n        if (\"function\" === typeof options) {\n            fn = options;\n            options = null;\n        }\n        if (\"closing\" === this.readyState || \"closed\" === this.readyState) {\n            return;\n        }\n        options = options || {};\n        options.compress = false !== options.compress;\n        const packet = {\n            type: type,\n            data: data,\n            options: options\n        };\n        this.emitReserved(\"packetCreate\", packet);\n        this.writeBuffer.push(packet);\n        if (fn)\n            this.once(\"flush\", fn);\n        this.flush();\n    }\n    /**\n     * Closes the connection.\n     *\n     * @api public\n     */\n    close() {\n        const close = () => {\n            this.onClose(\"forced close\");\n            this.transport.close();\n        };\n        const cleanupAndClose = () => {\n            this.off(\"upgrade\", cleanupAndClose);\n            this.off(\"upgradeError\", cleanupAndClose);\n            close();\n        };\n        const waitForUpgrade = () => {\n            // wait for upgrade to finish since we can't send packets while pausing a transport\n            this.once(\"upgrade\", cleanupAndClose);\n            this.once(\"upgradeError\", cleanupAndClose);\n        };\n        if (\"opening\" === this.readyState || \"open\" === this.readyState) {\n            this.readyState = \"closing\";\n            if (this.writeBuffer.length) {\n                this.once(\"drain\", () => {\n                    if (this.upgrading) {\n                        waitForUpgrade();\n                    }\n                    else {\n                        close();\n                    }\n                });\n            }\n            else if (this.upgrading) {\n                waitForUpgrade();\n            }\n            else {\n                close();\n            }\n        }\n        return this;\n    }\n    /**\n     * Called upon transport error\n     *\n     * @api private\n     */\n    onError(err) {\n        Socket.priorWebsocketSuccess = false;\n        this.emitReserved(\"error\", err);\n        this.onClose(\"transport error\", err);\n    }\n    /**\n     * Called upon transport close.\n     *\n     * @api private\n     */\n    onClose(reason, desc) {\n        if (\"opening\" === this.readyState ||\n            \"open\" === this.readyState ||\n            \"closing\" === this.readyState) {\n            // clear timers\n            this.clearTimeoutFn(this.pingTimeoutTimer);\n            // stop event from firing again for transport\n            this.transport.removeAllListeners(\"close\");\n            // ensure transport won't stay open\n            this.transport.close();\n            // ignore further transport communication\n            this.transport.removeAllListeners();\n            if (typeof removeEventListener === \"function\") {\n                removeEventListener(\"offline\", this.offlineEventListener, false);\n            }\n            // set ready state\n            this.readyState = \"closed\";\n            // clear session id\n            this.id = null;\n            // emit close event\n            this.emitReserved(\"close\", reason, desc);\n            // clean buffers after, so users can still\n            // grab the buffers on `close` event\n            this.writeBuffer = [];\n            this.prevBufferLen = 0;\n        }\n    }\n    /**\n     * Filters upgrades, returning only those matching client transports.\n     *\n     * @param {Array} server upgrades\n     * @api private\n     *\n     */\n    filterUpgrades(upgrades) {\n        const filteredUpgrades = [];\n        let i = 0;\n        const j = upgrades.length;\n        for (; i < j; i++) {\n            if (~this.transports.indexOf(upgrades[i]))\n                filteredUpgrades.push(upgrades[i]);\n        }\n        return filteredUpgrades;\n    }\n}\nSocket.protocol = protocol;\nfunction clone(obj) {\n    const o = {};\n    for (let i in obj) {\n        if (obj.hasOwnProperty(i)) {\n            o[i] = obj[i];\n        }\n    }\n    return o;\n}\n","import { Socket } from \"./socket.js\";\nexport { Socket };\nexport const protocol = Socket.protocol;\nexport { Transport } from \"./transport.js\";\nexport { transports } from \"./transports/index.js\";\nexport { installTimerFunctions } from \"./util.js\";\n","const withNativeArrayBuffer = typeof ArrayBuffer === \"function\";\nconst isView = (obj) => {\n    return typeof ArrayBuffer.isView === \"function\"\n        ? ArrayBuffer.isView(obj)\n        : obj.buffer instanceof ArrayBuffer;\n};\nconst toString = Object.prototype.toString;\nconst withNativeBlob = typeof Blob === \"function\" ||\n    (typeof Blob !== \"undefined\" &&\n        toString.call(Blob) === \"[object BlobConstructor]\");\nconst withNativeFile = typeof File === \"function\" ||\n    (typeof File !== \"undefined\" &&\n        toString.call(File) === \"[object FileConstructor]\");\n/**\n * Returns true if obj is a Buffer, an ArrayBuffer, a Blob or a File.\n *\n * @private\n */\nexport function isBinary(obj) {\n    return ((withNativeArrayBuffer && (obj instanceof ArrayBuffer || isView(obj))) ||\n        (withNativeBlob && obj instanceof Blob) ||\n        (withNativeFile && obj instanceof File));\n}\nexport function hasBinary(obj, toJSON) {\n    if (!obj || typeof obj !== \"object\") {\n        return false;\n    }\n    if (Array.isArray(obj)) {\n        for (let i = 0, l = obj.length; i < l; i++) {\n            if (hasBinary(obj[i])) {\n                return true;\n            }\n        }\n        return false;\n    }\n    if (isBinary(obj)) {\n        return true;\n    }\n    if (obj.toJSON &&\n        typeof obj.toJSON === \"function\" &&\n        arguments.length === 1) {\n        return hasBinary(obj.toJSON(), true);\n    }\n    for (const key in obj) {\n        if (Object.prototype.hasOwnProperty.call(obj, key) && hasBinary(obj[key])) {\n            return true;\n        }\n    }\n    return false;\n}\n","import { isBinary } from \"./is-binary.js\";\n/**\n * Replaces every Buffer | ArrayBuffer | Blob | File in packet with a numbered placeholder.\n *\n * @param {Object} packet - socket.io event packet\n * @return {Object} with deconstructed packet and list of buffers\n * @public\n */\nexport function deconstructPacket(packet) {\n    const buffers = [];\n    const packetData = packet.data;\n    const pack = packet;\n    pack.data = _deconstructPacket(packetData, buffers);\n    pack.attachments = buffers.length; // number of binary 'attachments'\n    return { packet: pack, buffers: buffers };\n}\nfunction _deconstructPacket(data, buffers) {\n    if (!data)\n        return data;\n    if (isBinary(data)) {\n        const placeholder = { _placeholder: true, num: buffers.length };\n        buffers.push(data);\n        return placeholder;\n    }\n    else if (Array.isArray(data)) {\n        const newData = new Array(data.length);\n        for (let i = 0; i < data.length; i++) {\n            newData[i] = _deconstructPacket(data[i], buffers);\n        }\n        return newData;\n    }\n    else if (typeof data === \"object\" && !(data instanceof Date)) {\n        const newData = {};\n        for (const key in data) {\n            if (data.hasOwnProperty(key)) {\n                newData[key] = _deconstructPacket(data[key], buffers);\n            }\n        }\n        return newData;\n    }\n    return data;\n}\n/**\n * Reconstructs a binary packet from its placeholder packet and buffers\n *\n * @param {Object} packet - event packet with placeholders\n * @param {Array} buffers - binary buffers to put in placeholder positions\n * @return {Object} reconstructed packet\n * @public\n */\nexport function reconstructPacket(packet, buffers) {\n    packet.data = _reconstructPacket(packet.data, buffers);\n    packet.attachments = undefined; // no longer useful\n    return packet;\n}\nfunction _reconstructPacket(data, buffers) {\n    if (!data)\n        return data;\n    if (data && data._placeholder) {\n        return buffers[data.num]; // appropriate buffer (should be natural order anyway)\n    }\n    else if (Array.isArray(data)) {\n        for (let i = 0; i < data.length; i++) {\n            data[i] = _reconstructPacket(data[i], buffers);\n        }\n    }\n    else if (typeof data === \"object\") {\n        for (const key in data) {\n            if (data.hasOwnProperty(key)) {\n                data[key] = _reconstructPacket(data[key], buffers);\n            }\n        }\n    }\n    return data;\n}\n","import { Emitter } from \"@socket.io/component-emitter\";\nimport { deconstructPacket, reconstructPacket } from \"./binary.js\";\nimport { isBinary, hasBinary } from \"./is-binary.js\";\n/**\n * Protocol version.\n *\n * @public\n */\nexport const protocol = 5;\nexport var PacketType;\n(function (PacketType) {\n    PacketType[PacketType[\"CONNECT\"] = 0] = \"CONNECT\";\n    PacketType[PacketType[\"DISCONNECT\"] = 1] = \"DISCONNECT\";\n    PacketType[PacketType[\"EVENT\"] = 2] = \"EVENT\";\n    PacketType[PacketType[\"ACK\"] = 3] = \"ACK\";\n    PacketType[PacketType[\"CONNECT_ERROR\"] = 4] = \"CONNECT_ERROR\";\n    PacketType[PacketType[\"BINARY_EVENT\"] = 5] = \"BINARY_EVENT\";\n    PacketType[PacketType[\"BINARY_ACK\"] = 6] = \"BINARY_ACK\";\n})(PacketType || (PacketType = {}));\n/**\n * A socket.io Encoder instance\n */\nexport class Encoder {\n    /**\n     * Encode a packet as a single string if non-binary, or as a\n     * buffer sequence, depending on packet type.\n     *\n     * @param {Object} obj - packet object\n     */\n    encode(obj) {\n        if (obj.type === PacketType.EVENT || obj.type === PacketType.ACK) {\n            if (hasBinary(obj)) {\n                obj.type =\n                    obj.type === PacketType.EVENT\n                        ? PacketType.BINARY_EVENT\n                        : PacketType.BINARY_ACK;\n                return this.encodeAsBinary(obj);\n            }\n        }\n        return [this.encodeAsString(obj)];\n    }\n    /**\n     * Encode packet as string.\n     */\n    encodeAsString(obj) {\n        // first is type\n        let str = \"\" + obj.type;\n        // attachments if we have them\n        if (obj.type === PacketType.BINARY_EVENT ||\n            obj.type === PacketType.BINARY_ACK) {\n            str += obj.attachments + \"-\";\n        }\n        // if we have a namespace other than `/`\n        // we append it followed by a comma `,`\n        if (obj.nsp && \"/\" !== obj.nsp) {\n            str += obj.nsp + \",\";\n        }\n        // immediately followed by the id\n        if (null != obj.id) {\n            str += obj.id;\n        }\n        // json data\n        if (null != obj.data) {\n            str += JSON.stringify(obj.data);\n        }\n        return str;\n    }\n    /**\n     * Encode packet as 'buffer sequence' by removing blobs, and\n     * deconstructing packet into object with placeholders and\n     * a list of buffers.\n     */\n    encodeAsBinary(obj) {\n        const deconstruction = deconstructPacket(obj);\n        const pack = this.encodeAsString(deconstruction.packet);\n        const buffers = deconstruction.buffers;\n        buffers.unshift(pack); // add packet info to beginning of data list\n        return buffers; // write all the buffers\n    }\n}\n/**\n * A socket.io Decoder instance\n *\n * @return {Object} decoder\n */\nexport class Decoder extends Emitter {\n    constructor() {\n        super();\n    }\n    /**\n     * Decodes an encoded packet string into packet JSON.\n     *\n     * @param {String} obj - encoded packet\n     */\n    add(obj) {\n        let packet;\n        if (typeof obj === \"string\") {\n            packet = this.decodeString(obj);\n            if (packet.type === PacketType.BINARY_EVENT ||\n                packet.type === PacketType.BINARY_ACK) {\n                // binary packet's json\n                this.reconstructor = new BinaryReconstructor(packet);\n                // no attachments, labeled binary but no binary data to follow\n                if (packet.attachments === 0) {\n                    super.emitReserved(\"decoded\", packet);\n                }\n            }\n            else {\n                // non-binary full packet\n                super.emitReserved(\"decoded\", packet);\n            }\n        }\n        else if (isBinary(obj) || obj.base64) {\n            // raw binary data\n            if (!this.reconstructor) {\n                throw new Error(\"got binary data when not reconstructing a packet\");\n            }\n            else {\n                packet = this.reconstructor.takeBinaryData(obj);\n                if (packet) {\n                    // received final buffer\n                    this.reconstructor = null;\n                    super.emitReserved(\"decoded\", packet);\n                }\n            }\n        }\n        else {\n            throw new Error(\"Unknown type: \" + obj);\n        }\n    }\n    /**\n     * Decode a packet String (JSON data)\n     *\n     * @param {String} str\n     * @return {Object} packet\n     */\n    decodeString(str) {\n        let i = 0;\n        // look up type\n        const p = {\n            type: Number(str.charAt(0)),\n        };\n        if (PacketType[p.type] === undefined) {\n            throw new Error(\"unknown packet type \" + p.type);\n        }\n        // look up attachments if type binary\n        if (p.type === PacketType.BINARY_EVENT ||\n            p.type === PacketType.BINARY_ACK) {\n            const start = i + 1;\n            while (str.charAt(++i) !== \"-\" && i != str.length) { }\n            const buf = str.substring(start, i);\n            if (buf != Number(buf) || str.charAt(i) !== \"-\") {\n                throw new Error(\"Illegal attachments\");\n            }\n            p.attachments = Number(buf);\n        }\n        // look up namespace (if any)\n        if (\"/\" === str.charAt(i + 1)) {\n            const start = i + 1;\n            while (++i) {\n                const c = str.charAt(i);\n                if (\",\" === c)\n                    break;\n                if (i === str.length)\n                    break;\n            }\n            p.nsp = str.substring(start, i);\n        }\n        else {\n            p.nsp = \"/\";\n        }\n        // look up id\n        const next = str.charAt(i + 1);\n        if (\"\" !== next && Number(next) == next) {\n            const start = i + 1;\n            while (++i) {\n                const c = str.charAt(i);\n                if (null == c || Number(c) != c) {\n                    --i;\n                    break;\n                }\n                if (i === str.length)\n                    break;\n            }\n            p.id = Number(str.substring(start, i + 1));\n        }\n        // look up json data\n        if (str.charAt(++i)) {\n            const payload = tryParse(str.substr(i));\n            if (Decoder.isPayloadValid(p.type, payload)) {\n                p.data = payload;\n            }\n            else {\n                throw new Error(\"invalid payload\");\n            }\n        }\n        return p;\n    }\n    static isPayloadValid(type, payload) {\n        switch (type) {\n            case PacketType.CONNECT:\n                return typeof payload === \"object\";\n            case PacketType.DISCONNECT:\n                return payload === undefined;\n            case PacketType.CONNECT_ERROR:\n                return typeof payload === \"string\" || typeof payload === \"object\";\n            case PacketType.EVENT:\n            case PacketType.BINARY_EVENT:\n                return Array.isArray(payload) && payload.length > 0;\n            case PacketType.ACK:\n            case PacketType.BINARY_ACK:\n                return Array.isArray(payload);\n        }\n    }\n    /**\n     * Deallocates a parser's resources\n     */\n    destroy() {\n        if (this.reconstructor) {\n            this.reconstructor.finishedReconstruction();\n        }\n    }\n}\nfunction tryParse(str) {\n    try {\n        return JSON.parse(str);\n    }\n    catch (e) {\n        return false;\n    }\n}\n/**\n * A manager of a binary event's 'buffer sequence'. Should\n * be constructed whenever a packet of type BINARY_EVENT is\n * decoded.\n *\n * @param {Object} packet\n * @return {BinaryReconstructor} initialized reconstructor\n */\nclass BinaryReconstructor {\n    constructor(packet) {\n        this.packet = packet;\n        this.buffers = [];\n        this.reconPack = packet;\n    }\n    /**\n     * Method to be called when binary data received from connection\n     * after a BINARY_EVENT packet.\n     *\n     * @param {Buffer | ArrayBuffer} binData - the raw binary data received\n     * @return {null | Object} returns null if more binary data is expected or\n     *   a reconstructed packet object if all buffers have been received.\n     */\n    takeBinaryData(binData) {\n        this.buffers.push(binData);\n        if (this.buffers.length === this.reconPack.attachments) {\n            // done with buffer list\n            const packet = reconstructPacket(this.reconPack, this.buffers);\n            this.finishedReconstruction();\n            return packet;\n        }\n        return null;\n    }\n    /**\n     * Cleans up binary packet reconstruction variables.\n     */\n    finishedReconstruction() {\n        this.reconPack = null;\n        this.buffers = [];\n    }\n}\n","export function on(obj, ev, fn) {\n    obj.on(ev, fn);\n    return function subDestroy() {\n        obj.off(ev, fn);\n    };\n}\n","import { PacketType } from \"socket.io-parser\";\nimport { on } from \"./on.js\";\nimport { Emitter, } from \"@socket.io/component-emitter\";\n/**\n * Internal events.\n * These events can't be emitted by the user.\n */\nconst RESERVED_EVENTS = Object.freeze({\n    connect: 1,\n    connect_error: 1,\n    disconnect: 1,\n    disconnecting: 1,\n    // EventEmitter reserved events: https://nodejs.org/api/events.html#events_event_newlistener\n    newListener: 1,\n    removeListener: 1,\n});\nexport class Socket extends Emitter {\n    /**\n     * `Socket` constructor.\n     *\n     * @public\n     */\n    constructor(io, nsp, opts) {\n        super();\n        this.connected = false;\n        this.disconnected = true;\n        this.receiveBuffer = [];\n        this.sendBuffer = [];\n        this.ids = 0;\n        this.acks = {};\n        this.flags = {};\n        this.io = io;\n        this.nsp = nsp;\n        if (opts && opts.auth) {\n            this.auth = opts.auth;\n        }\n        if (this.io._autoConnect)\n            this.open();\n    }\n    /**\n     * Subscribe to open, close and packet events\n     *\n     * @private\n     */\n    subEvents() {\n        if (this.subs)\n            return;\n        const io = this.io;\n        this.subs = [\n            on(io, \"open\", this.onopen.bind(this)),\n            on(io, \"packet\", this.onpacket.bind(this)),\n            on(io, \"error\", this.onerror.bind(this)),\n            on(io, \"close\", this.onclose.bind(this)),\n        ];\n    }\n    /**\n     * Whether the Socket will try to reconnect when its Manager connects or reconnects\n     */\n    get active() {\n        return !!this.subs;\n    }\n    /**\n     * \"Opens\" the socket.\n     *\n     * @public\n     */\n    connect() {\n        if (this.connected)\n            return this;\n        this.subEvents();\n        if (!this.io[\"_reconnecting\"])\n            this.io.open(); // ensure open\n        if (\"open\" === this.io._readyState)\n            this.onopen();\n        return this;\n    }\n    /**\n     * Alias for connect()\n     */\n    open() {\n        return this.connect();\n    }\n    /**\n     * Sends a `message` event.\n     *\n     * @return self\n     * @public\n     */\n    send(...args) {\n        args.unshift(\"message\");\n        this.emit.apply(this, args);\n        return this;\n    }\n    /**\n     * Override `emit`.\n     * If the event is in `events`, it's emitted normally.\n     *\n     * @return self\n     * @public\n     */\n    emit(ev, ...args) {\n        if (RESERVED_EVENTS.hasOwnProperty(ev)) {\n            throw new Error('\"' + ev + '\" is a reserved event name');\n        }\n        args.unshift(ev);\n        const packet = {\n            type: PacketType.EVENT,\n            data: args,\n        };\n        packet.options = {};\n        packet.options.compress = this.flags.compress !== false;\n        // event ack callback\n        if (\"function\" === typeof args[args.length - 1]) {\n            const id = this.ids++;\n            const ack = args.pop();\n            this._registerAckCallback(id, ack);\n            packet.id = id;\n        }\n        const isTransportWritable = this.io.engine &&\n            this.io.engine.transport &&\n            this.io.engine.transport.writable;\n        const discardPacket = this.flags.volatile && (!isTransportWritable || !this.connected);\n        if (discardPacket) {\n        }\n        else if (this.connected) {\n            this.packet(packet);\n        }\n        else {\n            this.sendBuffer.push(packet);\n        }\n        this.flags = {};\n        return this;\n    }\n    /**\n     * @private\n     */\n    _registerAckCallback(id, ack) {\n        const timeout = this.flags.timeout;\n        if (timeout === undefined) {\n            this.acks[id] = ack;\n            return;\n        }\n        // @ts-ignore\n        const timer = this.io.setTimeoutFn(() => {\n            delete this.acks[id];\n            for (let i = 0; i < this.sendBuffer.length; i++) {\n                if (this.sendBuffer[i].id === id) {\n                    this.sendBuffer.splice(i, 1);\n                }\n            }\n            ack.call(this, new Error(\"operation has timed out\"));\n        }, timeout);\n        this.acks[id] = (...args) => {\n            // @ts-ignore\n            this.io.clearTimeoutFn(timer);\n            ack.apply(this, [null, ...args]);\n        };\n    }\n    /**\n     * Sends a packet.\n     *\n     * @param packet\n     * @private\n     */\n    packet(packet) {\n        packet.nsp = this.nsp;\n        this.io._packet(packet);\n    }\n    /**\n     * Called upon engine `open`.\n     *\n     * @private\n     */\n    onopen() {\n        if (typeof this.auth == \"function\") {\n            this.auth((data) => {\n                this.packet({ type: PacketType.CONNECT, data });\n            });\n        }\n        else {\n            this.packet({ type: PacketType.CONNECT, data: this.auth });\n        }\n    }\n    /**\n     * Called upon engine or manager `error`.\n     *\n     * @param err\n     * @private\n     */\n    onerror(err) {\n        if (!this.connected) {\n            this.emitReserved(\"connect_error\", err);\n        }\n    }\n    /**\n     * Called upon engine `close`.\n     *\n     * @param reason\n     * @private\n     */\n    onclose(reason) {\n        this.connected = false;\n        this.disconnected = true;\n        delete this.id;\n        this.emitReserved(\"disconnect\", reason);\n    }\n    /**\n     * Called with socket packet.\n     *\n     * @param packet\n     * @private\n     */\n    onpacket(packet) {\n        const sameNamespace = packet.nsp === this.nsp;\n        if (!sameNamespace)\n            return;\n        switch (packet.type) {\n            case PacketType.CONNECT:\n                if (packet.data && packet.data.sid) {\n                    const id = packet.data.sid;\n                    this.onconnect(id);\n                }\n                else {\n                    this.emitReserved(\"connect_error\", new Error(\"It seems you are trying to reach a Socket.IO server in v2.x with a v3.x client, but they are not compatible (more information here: https://socket.io/docs/v3/migrating-from-2-x-to-3-0/)\"));\n                }\n                break;\n            case PacketType.EVENT:\n                this.onevent(packet);\n                break;\n            case PacketType.BINARY_EVENT:\n                this.onevent(packet);\n                break;\n            case PacketType.ACK:\n                this.onack(packet);\n                break;\n            case PacketType.BINARY_ACK:\n                this.onack(packet);\n                break;\n            case PacketType.DISCONNECT:\n                this.ondisconnect();\n                break;\n            case PacketType.CONNECT_ERROR:\n                this.destroy();\n                const err = new Error(packet.data.message);\n                // @ts-ignore\n                err.data = packet.data.data;\n                this.emitReserved(\"connect_error\", err);\n                break;\n        }\n    }\n    /**\n     * Called upon a server event.\n     *\n     * @param packet\n     * @private\n     */\n    onevent(packet) {\n        const args = packet.data || [];\n        if (null != packet.id) {\n            args.push(this.ack(packet.id));\n        }\n        if (this.connected) {\n            this.emitEvent(args);\n        }\n        else {\n            this.receiveBuffer.push(Object.freeze(args));\n        }\n    }\n    emitEvent(args) {\n        if (this._anyListeners && this._anyListeners.length) {\n            const listeners = this._anyListeners.slice();\n            for (const listener of listeners) {\n                listener.apply(this, args);\n            }\n        }\n        super.emit.apply(this, args);\n    }\n    /**\n     * Produces an ack callback to emit with an event.\n     *\n     * @private\n     */\n    ack(id) {\n        const self = this;\n        let sent = false;\n        return function (...args) {\n            // prevent double callbacks\n            if (sent)\n                return;\n            sent = true;\n            self.packet({\n                type: PacketType.ACK,\n                id: id,\n                data: args,\n            });\n        };\n    }\n    /**\n     * Called upon a server acknowlegement.\n     *\n     * @param packet\n     * @private\n     */\n    onack(packet) {\n        const ack = this.acks[packet.id];\n        if (\"function\" === typeof ack) {\n            ack.apply(this, packet.data);\n            delete this.acks[packet.id];\n        }\n        else {\n        }\n    }\n    /**\n     * Called upon server connect.\n     *\n     * @private\n     */\n    onconnect(id) {\n        this.id = id;\n        this.connected = true;\n        this.disconnected = false;\n        this.emitBuffered();\n        this.emitReserved(\"connect\");\n    }\n    /**\n     * Emit buffered events (received and emitted).\n     *\n     * @private\n     */\n    emitBuffered() {\n        this.receiveBuffer.forEach((args) => this.emitEvent(args));\n        this.receiveBuffer = [];\n        this.sendBuffer.forEach((packet) => this.packet(packet));\n        this.sendBuffer = [];\n    }\n    /**\n     * Called upon server disconnect.\n     *\n     * @private\n     */\n    ondisconnect() {\n        this.destroy();\n        this.onclose(\"io server disconnect\");\n    }\n    /**\n     * Called upon forced client/server side disconnections,\n     * this method ensures the manager stops tracking us and\n     * that reconnections don't get triggered for this.\n     *\n     * @private\n     */\n    destroy() {\n        if (this.subs) {\n            // clean subscriptions to avoid reconnections\n            this.subs.forEach((subDestroy) => subDestroy());\n            this.subs = undefined;\n        }\n        this.io[\"_destroy\"](this);\n    }\n    /**\n     * Disconnects the socket manually.\n     *\n     * @return self\n     * @public\n     */\n    disconnect() {\n        if (this.connected) {\n            this.packet({ type: PacketType.DISCONNECT });\n        }\n        // remove socket from pool\n        this.destroy();\n        if (this.connected) {\n            // fire events\n            this.onclose(\"io client disconnect\");\n        }\n        return this;\n    }\n    /**\n     * Alias for disconnect()\n     *\n     * @return self\n     * @public\n     */\n    close() {\n        return this.disconnect();\n    }\n    /**\n     * Sets the compress flag.\n     *\n     * @param compress - if `true`, compresses the sending data\n     * @return self\n     * @public\n     */\n    compress(compress) {\n        this.flags.compress = compress;\n        return this;\n    }\n    /**\n     * Sets a modifier for a subsequent event emission that the event message will be dropped when this socket is not\n     * ready to send messages.\n     *\n     * @returns self\n     * @public\n     */\n    get volatile() {\n        this.flags.volatile = true;\n        return this;\n    }\n    /**\n     * Sets a modifier for a subsequent event emission that the callback will be called with an error when the\n     * given number of milliseconds have elapsed without an acknowledgement from the server:\n     *\n     * ```\n     * socket.timeout(5000).emit(\"my-event\", (err) => {\n     *   if (err) {\n     *     // the server did not acknowledge the event in the given delay\n     *   }\n     * });\n     * ```\n     *\n     * @returns self\n     * @public\n     */\n    timeout(timeout) {\n        this.flags.timeout = timeout;\n        return this;\n    }\n    /**\n     * Adds a listener that will be fired when any event is emitted. The event name is passed as the first argument to the\n     * callback.\n     *\n     * @param listener\n     * @public\n     */\n    onAny(listener) {\n        this._anyListeners = this._anyListeners || [];\n        this._anyListeners.push(listener);\n        return this;\n    }\n    /**\n     * Adds a listener that will be fired when any event is emitted. The event name is passed as the first argument to the\n     * callback. The listener is added to the beginning of the listeners array.\n     *\n     * @param listener\n     * @public\n     */\n    prependAny(listener) {\n        this._anyListeners = this._anyListeners || [];\n        this._anyListeners.unshift(listener);\n        return this;\n    }\n    /**\n     * Removes the listener that will be fired when any event is emitted.\n     *\n     * @param listener\n     * @public\n     */\n    offAny(listener) {\n        if (!this._anyListeners) {\n            return this;\n        }\n        if (listener) {\n            const listeners = this._anyListeners;\n            for (let i = 0; i < listeners.length; i++) {\n                if (listener === listeners[i]) {\n                    listeners.splice(i, 1);\n                    return this;\n                }\n            }\n        }\n        else {\n            this._anyListeners = [];\n        }\n        return this;\n    }\n    /**\n     * Returns an array of listeners that are listening for any event that is specified. This array can be manipulated,\n     * e.g. to remove listeners.\n     *\n     * @public\n     */\n    listenersAny() {\n        return this._anyListeners || [];\n    }\n}\n","\n/**\n * Expose `Backoff`.\n */\n\nmodule.exports = Backoff;\n\n/**\n * Initialize backoff timer with `opts`.\n *\n * - `min` initial timeout in milliseconds [100]\n * - `max` max timeout [10000]\n * - `jitter` [0]\n * - `factor` [2]\n *\n * @param {Object} opts\n * @api public\n */\n\nfunction Backoff(opts) {\n  opts = opts || {};\n  this.ms = opts.min || 100;\n  this.max = opts.max || 10000;\n  this.factor = opts.factor || 2;\n  this.jitter = opts.jitter > 0 && opts.jitter <= 1 ? opts.jitter : 0;\n  this.attempts = 0;\n}\n\n/**\n * Return the backoff duration.\n *\n * @return {Number}\n * @api public\n */\n\nBackoff.prototype.duration = function(){\n  var ms = this.ms * Math.pow(this.factor, this.attempts++);\n  if (this.jitter) {\n    var rand =  Math.random();\n    var deviation = Math.floor(rand * this.jitter * ms);\n    ms = (Math.floor(rand * 10) & 1) == 0  ? ms - deviation : ms + deviation;\n  }\n  return Math.min(ms, this.max) | 0;\n};\n\n/**\n * Reset the number of attempts.\n *\n * @api public\n */\n\nBackoff.prototype.reset = function(){\n  this.attempts = 0;\n};\n\n/**\n * Set the minimum duration\n *\n * @api public\n */\n\nBackoff.prototype.setMin = function(min){\n  this.ms = min;\n};\n\n/**\n * Set the maximum duration\n *\n * @api public\n */\n\nBackoff.prototype.setMax = function(max){\n  this.max = max;\n};\n\n/**\n * Set the jitter\n *\n * @api public\n */\n\nBackoff.prototype.setJitter = function(jitter){\n  this.jitter = jitter;\n};\n\n","import { Socket as Engine, installTimerFunctions, } from \"engine.io-client\";\nimport { Socket } from \"./socket.js\";\nimport * as parser from \"socket.io-parser\";\nimport { on } from \"./on.js\";\nimport Backoff from \"backo2\";\nimport { Emitter, } from \"@socket.io/component-emitter\";\nexport class Manager extends Emitter {\n    constructor(uri, opts) {\n        var _a;\n        super();\n        this.nsps = {};\n        this.subs = [];\n        if (uri && \"object\" === typeof uri) {\n            opts = uri;\n            uri = undefined;\n        }\n        opts = opts || {};\n        opts.path = opts.path || \"/socket.io\";\n        this.opts = opts;\n        installTimerFunctions(this, opts);\n        this.reconnection(opts.reconnection !== false);\n        this.reconnectionAttempts(opts.reconnectionAttempts || Infinity);\n        this.reconnectionDelay(opts.reconnectionDelay || 1000);\n        this.reconnectionDelayMax(opts.reconnectionDelayMax || 5000);\n        this.randomizationFactor((_a = opts.randomizationFactor) !== null && _a !== void 0 ? _a : 0.5);\n        this.backoff = new Backoff({\n            min: this.reconnectionDelay(),\n            max: this.reconnectionDelayMax(),\n            jitter: this.randomizationFactor(),\n        });\n        this.timeout(null == opts.timeout ? 20000 : opts.timeout);\n        this._readyState = \"closed\";\n        this.uri = uri;\n        const _parser = opts.parser || parser;\n        this.encoder = new _parser.Encoder();\n        this.decoder = new _parser.Decoder();\n        this._autoConnect = opts.autoConnect !== false;\n        if (this._autoConnect)\n            this.open();\n    }\n    reconnection(v) {\n        if (!arguments.length)\n            return this._reconnection;\n        this._reconnection = !!v;\n        return this;\n    }\n    reconnectionAttempts(v) {\n        if (v === undefined)\n            return this._reconnectionAttempts;\n        this._reconnectionAttempts = v;\n        return this;\n    }\n    reconnectionDelay(v) {\n        var _a;\n        if (v === undefined)\n            return this._reconnectionDelay;\n        this._reconnectionDelay = v;\n        (_a = this.backoff) === null || _a === void 0 ? void 0 : _a.setMin(v);\n        return this;\n    }\n    randomizationFactor(v) {\n        var _a;\n        if (v === undefined)\n            return this._randomizationFactor;\n        this._randomizationFactor = v;\n        (_a = this.backoff) === null || _a === void 0 ? void 0 : _a.setJitter(v);\n        return this;\n    }\n    reconnectionDelayMax(v) {\n        var _a;\n        if (v === undefined)\n            return this._reconnectionDelayMax;\n        this._reconnectionDelayMax = v;\n        (_a = this.backoff) === null || _a === void 0 ? void 0 : _a.setMax(v);\n        return this;\n    }\n    timeout(v) {\n        if (!arguments.length)\n            return this._timeout;\n        this._timeout = v;\n        return this;\n    }\n    /**\n     * Starts trying to reconnect if reconnection is enabled and we have not\n     * started reconnecting yet\n     *\n     * @private\n     */\n    maybeReconnectOnOpen() {\n        // Only try to reconnect if it's the first time we're connecting\n        if (!this._reconnecting &&\n            this._reconnection &&\n            this.backoff.attempts === 0) {\n            // keeps reconnection from firing twice for the same reconnection loop\n            this.reconnect();\n        }\n    }\n    /**\n     * Sets the current transport `socket`.\n     *\n     * @param {Function} fn - optional, callback\n     * @return self\n     * @public\n     */\n    open(fn) {\n        if (~this._readyState.indexOf(\"open\"))\n            return this;\n        this.engine = new Engine(this.uri, this.opts);\n        const socket = this.engine;\n        const self = this;\n        this._readyState = \"opening\";\n        this.skipReconnect = false;\n        // emit `open`\n        const openSubDestroy = on(socket, \"open\", function () {\n            self.onopen();\n            fn && fn();\n        });\n        // emit `error`\n        const errorSub = on(socket, \"error\", (err) => {\n            self.cleanup();\n            self._readyState = \"closed\";\n            this.emitReserved(\"error\", err);\n            if (fn) {\n                fn(err);\n            }\n            else {\n                // Only do this if there is no fn to handle the error\n                self.maybeReconnectOnOpen();\n            }\n        });\n        if (false !== this._timeout) {\n            const timeout = this._timeout;\n            if (timeout === 0) {\n                openSubDestroy(); // prevents a race condition with the 'open' event\n            }\n            // set timer\n            const timer = this.setTimeoutFn(() => {\n                openSubDestroy();\n                socket.close();\n                // @ts-ignore\n                socket.emit(\"error\", new Error(\"timeout\"));\n            }, timeout);\n            if (this.opts.autoUnref) {\n                timer.unref();\n            }\n            this.subs.push(function subDestroy() {\n                clearTimeout(timer);\n            });\n        }\n        this.subs.push(openSubDestroy);\n        this.subs.push(errorSub);\n        return this;\n    }\n    /**\n     * Alias for open()\n     *\n     * @return self\n     * @public\n     */\n    connect(fn) {\n        return this.open(fn);\n    }\n    /**\n     * Called upon transport open.\n     *\n     * @private\n     */\n    onopen() {\n        // clear old subs\n        this.cleanup();\n        // mark as open\n        this._readyState = \"open\";\n        this.emitReserved(\"open\");\n        // add new subs\n        const socket = this.engine;\n        this.subs.push(on(socket, \"ping\", this.onping.bind(this)), on(socket, \"data\", this.ondata.bind(this)), on(socket, \"error\", this.onerror.bind(this)), on(socket, \"close\", this.onclose.bind(this)), on(this.decoder, \"decoded\", this.ondecoded.bind(this)));\n    }\n    /**\n     * Called upon a ping.\n     *\n     * @private\n     */\n    onping() {\n        this.emitReserved(\"ping\");\n    }\n    /**\n     * Called with data.\n     *\n     * @private\n     */\n    ondata(data) {\n        this.decoder.add(data);\n    }\n    /**\n     * Called when parser fully decodes a packet.\n     *\n     * @private\n     */\n    ondecoded(packet) {\n        this.emitReserved(\"packet\", packet);\n    }\n    /**\n     * Called upon socket error.\n     *\n     * @private\n     */\n    onerror(err) {\n        this.emitReserved(\"error\", err);\n    }\n    /**\n     * Creates a new socket for the given `nsp`.\n     *\n     * @return {Socket}\n     * @public\n     */\n    socket(nsp, opts) {\n        let socket = this.nsps[nsp];\n        if (!socket) {\n            socket = new Socket(this, nsp, opts);\n            this.nsps[nsp] = socket;\n        }\n        return socket;\n    }\n    /**\n     * Called upon a socket close.\n     *\n     * @param socket\n     * @private\n     */\n    _destroy(socket) {\n        const nsps = Object.keys(this.nsps);\n        for (const nsp of nsps) {\n            const socket = this.nsps[nsp];\n            if (socket.active) {\n                return;\n            }\n        }\n        this._close();\n    }\n    /**\n     * Writes a packet.\n     *\n     * @param packet\n     * @private\n     */\n    _packet(packet) {\n        const encodedPackets = this.encoder.encode(packet);\n        for (let i = 0; i < encodedPackets.length; i++) {\n            this.engine.write(encodedPackets[i], packet.options);\n        }\n    }\n    /**\n     * Clean up transport subscriptions and packet buffer.\n     *\n     * @private\n     */\n    cleanup() {\n        this.subs.forEach((subDestroy) => subDestroy());\n        this.subs.length = 0;\n        this.decoder.destroy();\n    }\n    /**\n     * Close the current socket.\n     *\n     * @private\n     */\n    _close() {\n        this.skipReconnect = true;\n        this._reconnecting = false;\n        this.onclose(\"forced close\");\n        if (this.engine)\n            this.engine.close();\n    }\n    /**\n     * Alias for close()\n     *\n     * @private\n     */\n    disconnect() {\n        return this._close();\n    }\n    /**\n     * Called upon engine close.\n     *\n     * @private\n     */\n    onclose(reason) {\n        this.cleanup();\n        this.backoff.reset();\n        this._readyState = \"closed\";\n        this.emitReserved(\"close\", reason);\n        if (this._reconnection && !this.skipReconnect) {\n            this.reconnect();\n        }\n    }\n    /**\n     * Attempt a reconnection.\n     *\n     * @private\n     */\n    reconnect() {\n        if (this._reconnecting || this.skipReconnect)\n            return this;\n        const self = this;\n        if (this.backoff.attempts >= this._reconnectionAttempts) {\n            this.backoff.reset();\n            this.emitReserved(\"reconnect_failed\");\n            this._reconnecting = false;\n        }\n        else {\n            const delay = this.backoff.duration();\n            this._reconnecting = true;\n            const timer = this.setTimeoutFn(() => {\n                if (self.skipReconnect)\n                    return;\n                this.emitReserved(\"reconnect_attempt\", self.backoff.attempts);\n                // check again for the case socket closed in above events\n                if (self.skipReconnect)\n                    return;\n                self.open((err) => {\n                    if (err) {\n                        self._reconnecting = false;\n                        self.reconnect();\n                        this.emitReserved(\"reconnect_error\", err);\n                    }\n                    else {\n                        self.onreconnect();\n                    }\n                });\n            }, delay);\n            if (this.opts.autoUnref) {\n                timer.unref();\n            }\n            this.subs.push(function subDestroy() {\n                clearTimeout(timer);\n            });\n        }\n    }\n    /**\n     * Called upon successful reconnect.\n     *\n     * @private\n     */\n    onreconnect() {\n        const attempt = this.backoff.attempts;\n        this._reconnecting = false;\n        this.backoff.reset();\n        this.emitReserved(\"reconnect\", attempt);\n    }\n}\n","import { url } from \"./url.js\";\nimport { Manager } from \"./manager.js\";\nimport { Socket } from \"./socket.js\";\n/**\n * Managers cache.\n */\nconst cache = {};\nfunction lookup(uri, opts) {\n    if (typeof uri === \"object\") {\n        opts = uri;\n        uri = undefined;\n    }\n    opts = opts || {};\n    const parsed = url(uri, opts.path || \"/socket.io\");\n    const source = parsed.source;\n    const id = parsed.id;\n    const path = parsed.path;\n    const sameNamespace = cache[id] && path in cache[id][\"nsps\"];\n    const newConnection = opts.forceNew ||\n        opts[\"force new connection\"] ||\n        false === opts.multiplex ||\n        sameNamespace;\n    let io;\n    if (newConnection) {\n        io = new Manager(source, opts);\n    }\n    else {\n        if (!cache[id]) {\n            cache[id] = new Manager(source, opts);\n        }\n        io = cache[id];\n    }\n    if (parsed.query && !opts.query) {\n        opts.query = parsed.queryKey;\n    }\n    return io.socket(parsed.path, opts);\n}\n// so that \"lookup\" can be used both as a function (e.g. `io(...)`) and as a\n// namespace (e.g. `io.connect(...)`), for backward compatibility\nObject.assign(lookup, {\n    Manager,\n    Socket,\n    io: lookup,\n    connect: lookup,\n});\n/**\n * Protocol version.\n *\n * @public\n */\nexport { protocol } from \"socket.io-parser\";\n/**\n * Expose constructors for standalone build.\n *\n * @public\n */\nexport { Manager, Socket, lookup as io, lookup as connect, lookup as default, };\n","import parseuri from \"parseuri\";\n/**\n * URL parser.\n *\n * @param uri - url\n * @param path - the request path of the connection\n * @param loc - An object meant to mimic window.location.\n *        Defaults to window.location.\n * @public\n */\nexport function url(uri, path = \"\", loc) {\n    let obj = uri;\n    // default to window.location\n    loc = loc || (typeof location !== \"undefined\" && location);\n    if (null == uri)\n        uri = loc.protocol + \"//\" + loc.host;\n    // relative path support\n    if (typeof uri === \"string\") {\n        if (\"/\" === uri.charAt(0)) {\n            if (\"/\" === uri.charAt(1)) {\n                uri = loc.protocol + uri;\n            }\n            else {\n                uri = loc.host + uri;\n            }\n        }\n        if (!/^(https?|wss?):\\/\\//.test(uri)) {\n            if (\"undefined\" !== typeof loc) {\n                uri = loc.protocol + \"//\" + uri;\n            }\n            else {\n                uri = \"https://\" + uri;\n            }\n        }\n        // parse\n        obj = parseuri(uri);\n    }\n    // make sure we treat `localhost:80` and `localhost` equally\n    if (!obj.port) {\n        if (/^(http|ws)$/.test(obj.protocol)) {\n            obj.port = \"80\";\n        }\n        else if (/^(http|ws)s$/.test(obj.protocol)) {\n     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Index: trip-planner-front/node_modules/socket.io/client-dist/socket.io.js
===================================================================
--- trip-planner-front/node_modules/socket.io/client-dist/socket.io.js	(revision 571e0df9a7a5e798c9941a85842f785177bedbbd)
+++ trip-planner-front/node_modules/socket.io/client-dist/socket.io.js	(revision 6a3a178323fd905112b5392bd9d3cb83b66ef2d3)
@@ -1,690 +1,4824 @@
 /*!
- * Socket.IO v4.4.0
+ * Socket.IO v3.1.2
  * (c) 2014-2021 Guillermo Rauch
  * Released under the MIT License.
  */
-(function (global, factory) {
-  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
-  typeof define === 'function' && define.amd ? define(factory) :
-  (global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.io = factory());
-})(this, (function () { 'use strict';
-
-  function _typeof(obj) {
-    "@babel/helpers - typeof";
-
-    if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") {
-      _typeof = function (obj) {
-        return typeof obj;
+(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["io"] = factory();
+	else
+		root["io"] = 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] = {
+/******/ 			i: moduleId,
+/******/ 			l: false,
+/******/ 			exports: {}
+/******/ 		};
+/******/
+/******/ 		// Execute the module function
+/******/ 		modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);
+/******/
+/******/ 		// Flag the module as loaded
+/******/ 		module.l = 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;
+/******/
+/******/ 	// define getter function for harmony exports
+/******/ 	__webpack_require__.d = function(exports, name, getter) {
+/******/ 		if(!__webpack_require__.o(exports, name)) {
+/******/ 			Object.defineProperty(exports, name, { enumerable: true, get: getter });
+/******/ 		}
+/******/ 	};
+/******/
+/******/ 	// define __esModule on exports
+/******/ 	__webpack_require__.r = function(exports) {
+/******/ 		if(typeof Symbol !== 'undefined' && Symbol.toStringTag) {
+/******/ 			Object.defineProperty(exports, Symbol.toStringTag, { value: 'Module' });
+/******/ 		}
+/******/ 		Object.defineProperty(exports, '__esModule', { value: true });
+/******/ 	};
+/******/
+/******/ 	// create a fake namespace object
+/******/ 	// mode & 1: value is a module id, require it
+/******/ 	// mode & 2: merge all properties of value into the ns
+/******/ 	// mode & 4: return value when already ns object
+/******/ 	// mode & 8|1: behave like require
+/******/ 	__webpack_require__.t = function(value, mode) {
+/******/ 		if(mode & 1) value = __webpack_require__(value);
+/******/ 		if(mode & 8) return value;
+/******/ 		if((mode & 4) && typeof value === 'object' && value && value.__esModule) return value;
+/******/ 		var ns = Object.create(null);
+/******/ 		__webpack_require__.r(ns);
+/******/ 		Object.defineProperty(ns, 'default', { enumerable: true, value: value });
+/******/ 		if(mode & 2 && typeof value != 'string') for(var key in value) __webpack_require__.d(ns, key, function(key) { return value[key]; }.bind(null, key));
+/******/ 		return ns;
+/******/ 	};
+/******/
+/******/ 	// getDefaultExport function for compatibility with non-harmony modules
+/******/ 	__webpack_require__.n = function(module) {
+/******/ 		var getter = module && module.__esModule ?
+/******/ 			function getDefault() { return module['default']; } :
+/******/ 			function getModuleExports() { return module; };
+/******/ 		__webpack_require__.d(getter, 'a', getter);
+/******/ 		return getter;
+/******/ 	};
+/******/
+/******/ 	// Object.prototype.hasOwnProperty.call
+/******/ 	__webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };
+/******/
+/******/ 	// __webpack_public_path__
+/******/ 	__webpack_require__.p = "";
+/******/
+/******/
+/******/ 	// Load entry module and return exports
+/******/ 	return __webpack_require__(__webpack_require__.s = "./build/index.js");
+/******/ })
+/************************************************************************/
+/******/ ({
+
+/***/ "./build/index.js":
+/*!************************!*\
+  !*** ./build/index.js ***!
+  \************************/
+/*! no static exports found */
+/***/ (function(module, exports, __webpack_require__) {
+
+"use strict";
+
+
+function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.Socket = exports.io = exports.Manager = exports.protocol = void 0;
+
+var url_1 = __webpack_require__(/*! ./url */ "./build/url.js");
+
+var manager_1 = __webpack_require__(/*! ./manager */ "./build/manager.js");
+
+var socket_1 = __webpack_require__(/*! ./socket */ "./build/socket.js");
+
+Object.defineProperty(exports, "Socket", {
+  enumerable: true,
+  get: function get() {
+    return socket_1.Socket;
+  }
+});
+
+var debug = __webpack_require__(/*! debug */ "./node_modules/debug/src/browser.js")("socket.io-client");
+/**
+ * Module exports.
+ */
+
+
+module.exports = exports = lookup;
+/**
+ * Managers cache.
+ */
+
+var cache = exports.managers = {};
+
+function lookup(uri, opts) {
+  if (_typeof(uri) === "object") {
+    opts = uri;
+    uri = undefined;
+  }
+
+  opts = opts || {};
+  var parsed = url_1.url(uri, opts.path);
+  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 = new manager_1.Manager(source, opts);
+  } else {
+    if (!cache[id]) {
+      debug("new io instance for %s", source);
+      cache[id] = new manager_1.Manager(source, opts);
+    }
+
+    io = cache[id];
+  }
+
+  if (parsed.query && !opts.query) {
+    opts.query = parsed.queryKey;
+  }
+
+  return io.socket(parsed.path, opts);
+}
+
+exports.io = lookup;
+/**
+ * Protocol version.
+ *
+ * @public
+ */
+
+var socket_io_parser_1 = __webpack_require__(/*! socket.io-parser */ "./node_modules/socket.io-parser/dist/index.js");
+
+Object.defineProperty(exports, "protocol", {
+  enumerable: true,
+  get: function get() {
+    return socket_io_parser_1.protocol;
+  }
+});
+/**
+ * `connect`.
+ *
+ * @param {String} uri
+ * @public
+ */
+
+exports.connect = lookup;
+/**
+ * Expose constructors for standalone build.
+ *
+ * @public
+ */
+
+var manager_2 = __webpack_require__(/*! ./manager */ "./build/manager.js");
+
+Object.defineProperty(exports, "Manager", {
+  enumerable: true,
+  get: function get() {
+    return manager_2.Manager;
+  }
+});
+
+/***/ }),
+
+/***/ "./build/manager.js":
+/*!**************************!*\
+  !*** ./build/manager.js ***!
+  \**************************/
+/*! no static exports found */
+/***/ (function(module, exports, __webpack_require__) {
+
+"use strict";
+
+
+function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
+
+function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
+
+function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
+
+function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
+
+function _get(target, property, receiver) { if (typeof Reflect !== "undefined" && Reflect.get) { _get = Reflect.get; } else { _get = function _get(target, property, receiver) { var base = _superPropBase(target, property); if (!base) return; var desc = Object.getOwnPropertyDescriptor(base, property); if (desc.get) { return desc.get.call(receiver); } return desc.value; }; } return _get(target, property, receiver || target); }
+
+function _superPropBase(object, property) { while (!Object.prototype.hasOwnProperty.call(object, property)) { object = _getPrototypeOf(object); if (object === null) break; } return object; }
+
+function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }
+
+function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }
+
+function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }
+
+function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }
+
+function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }
+
+function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Date.prototype.toString.call(Reflect.construct(Date, [], function () {})); return true; } catch (e) { return false; } }
+
+function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.Manager = void 0;
+
+var eio = __webpack_require__(/*! engine.io-client */ "./node_modules/engine.io-client/lib/index.js");
+
+var socket_1 = __webpack_require__(/*! ./socket */ "./build/socket.js");
+
+var Emitter = __webpack_require__(/*! component-emitter */ "./node_modules/component-emitter/index.js");
+
+var parser = __webpack_require__(/*! socket.io-parser */ "./node_modules/socket.io-parser/dist/index.js");
+
+var on_1 = __webpack_require__(/*! ./on */ "./build/on.js");
+
+var Backoff = __webpack_require__(/*! backo2 */ "./node_modules/backo2/index.js");
+
+var debug = __webpack_require__(/*! debug */ "./node_modules/debug/src/browser.js")("socket.io-client:manager");
+
+var Manager = /*#__PURE__*/function (_Emitter) {
+  _inherits(Manager, _Emitter);
+
+  var _super = _createSuper(Manager);
+
+  function Manager(uri, opts) {
+    var _this;
+
+    _classCallCheck(this, Manager);
+
+    _this = _super.call(this);
+    _this.nsps = {};
+    _this.subs = [];
+
+    if (uri && "object" === _typeof(uri)) {
+      opts = uri;
+      uri = undefined;
+    }
+
+    opts = opts || {};
+    opts.path = opts.path || "/socket.io";
+    _this.opts = opts;
+
+    _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;
+
+    var _parser = opts.parser || parser;
+
+    _this.encoder = new _parser.Encoder();
+    _this.decoder = new _parser.Decoder();
+    _this._autoConnect = opts.autoConnect !== false;
+    if (_this._autoConnect) _this.open();
+    return _this;
+  }
+
+  _createClass(Manager, [{
+    key: "reconnection",
+    value: function reconnection(v) {
+      if (!arguments.length) return this._reconnection;
+      this._reconnection = !!v;
+      return this;
+    }
+  }, {
+    key: "reconnectionAttempts",
+    value: function reconnectionAttempts(v) {
+      if (v === undefined) return this._reconnectionAttempts;
+      this._reconnectionAttempts = v;
+      return this;
+    }
+  }, {
+    key: "reconnectionDelay",
+    value: function reconnectionDelay(v) {
+      var _a;
+
+      if (v === undefined) return this._reconnectionDelay;
+      this._reconnectionDelay = v;
+      (_a = this.backoff) === null || _a === void 0 ? void 0 : _a.setMin(v);
+      return this;
+    }
+  }, {
+    key: "randomizationFactor",
+    value: function randomizationFactor(v) {
+      var _a;
+
+      if (v === undefined) return this._randomizationFactor;
+      this._randomizationFactor = v;
+      (_a = this.backoff) === null || _a === void 0 ? void 0 : _a.setJitter(v);
+      return this;
+    }
+  }, {
+    key: "reconnectionDelayMax",
+    value: function reconnectionDelayMax(v) {
+      var _a;
+
+      if (v === undefined) return this._reconnectionDelayMax;
+      this._reconnectionDelayMax = v;
+      (_a = this.backoff) === null || _a === void 0 ? void 0 : _a.setMax(v);
+      return this;
+    }
+  }, {
+    key: "timeout",
+    value: function timeout(v) {
+      if (!arguments.length) return this._timeout;
+      this._timeout = v;
+      return this;
+    }
+    /**
+     * Starts trying to reconnect if reconnection is enabled and we have not
+     * started reconnecting yet
+     *
+     * @private
+     */
+
+  }, {
+    key: "maybeReconnectOnOpen",
+    value: function maybeReconnectOnOpen() {
+      // Only try to reconnect if it's the first time we're connecting
+      if (!this._reconnecting && this._reconnection && this.backoff.attempts === 0) {
+        // keeps reconnection from firing twice for the same reconnection loop
+        this.reconnect();
+      }
+    }
+    /**
+     * Sets the current transport `socket`.
+     *
+     * @param {Function} fn - optional, callback
+     * @return self
+     * @public
+     */
+
+  }, {
+    key: "open",
+    value: function open(fn) {
+      var _this2 = this;
+
+      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 openSubDestroy = on_1.on(socket, "open", function () {
+        self.onopen();
+        fn && fn();
+      }); // emit `error`
+
+      var errorSub = on_1.on(socket, "error", function (err) {
+        debug("error");
+        self.cleanup();
+        self._readyState = "closed";
+
+        _get(_getPrototypeOf(Manager.prototype), "emit", _this2).call(_this2, "error", err);
+
+        if (fn) {
+          fn(err);
+        } else {
+          // Only do this if there is no fn to handle the error
+          self.maybeReconnectOnOpen();
+        }
+      });
+
+      if (false !== this._timeout) {
+        var timeout = this._timeout;
+        debug("connect attempt will timeout after %d", timeout);
+
+        if (timeout === 0) {
+          openSubDestroy(); // prevents a race condition with the 'open' event
+        } // set timer
+
+
+        var timer = setTimeout(function () {
+          debug("connect attempt timed out after %d", timeout);
+          openSubDestroy();
+          socket.close();
+          socket.emit("error", new Error("timeout"));
+        }, timeout);
+        this.subs.push(function subDestroy() {
+          clearTimeout(timer);
+        });
+      }
+
+      this.subs.push(openSubDestroy);
+      this.subs.push(errorSub);
+      return this;
+    }
+    /**
+     * Alias for open()
+     *
+     * @return self
+     * @public
+     */
+
+  }, {
+    key: "connect",
+    value: function connect(fn) {
+      return this.open(fn);
+    }
+    /**
+     * Called upon transport open.
+     *
+     * @private
+     */
+
+  }, {
+    key: "onopen",
+    value: function onopen() {
+      debug("open"); // clear old subs
+
+      this.cleanup(); // mark as open
+
+      this._readyState = "open";
+
+      _get(_getPrototypeOf(Manager.prototype), "emit", this).call(this, "open"); // add new subs
+
+
+      var socket = this.engine;
+      this.subs.push(on_1.on(socket, "ping", this.onping.bind(this)), on_1.on(socket, "data", this.ondata.bind(this)), on_1.on(socket, "error", this.onerror.bind(this)), on_1.on(socket, "close", this.onclose.bind(this)), on_1.on(this.decoder, "decoded", this.ondecoded.bind(this)));
+    }
+    /**
+     * Called upon a ping.
+     *
+     * @private
+     */
+
+  }, {
+    key: "onping",
+    value: function onping() {
+      _get(_getPrototypeOf(Manager.prototype), "emit", this).call(this, "ping");
+    }
+    /**
+     * Called with data.
+     *
+     * @private
+     */
+
+  }, {
+    key: "ondata",
+    value: function ondata(data) {
+      this.decoder.add(data);
+    }
+    /**
+     * Called when parser fully decodes a packet.
+     *
+     * @private
+     */
+
+  }, {
+    key: "ondecoded",
+    value: function ondecoded(packet) {
+      _get(_getPrototypeOf(Manager.prototype), "emit", this).call(this, "packet", packet);
+    }
+    /**
+     * Called upon socket error.
+     *
+     * @private
+     */
+
+  }, {
+    key: "onerror",
+    value: function onerror(err) {
+      debug("error", err);
+
+      _get(_getPrototypeOf(Manager.prototype), "emit", this).call(this, "error", err);
+    }
+    /**
+     * Creates a new socket for the given `nsp`.
+     *
+     * @return {Socket}
+     * @public
+     */
+
+  }, {
+    key: "socket",
+    value: function socket(nsp, opts) {
+      var socket = this.nsps[nsp];
+
+      if (!socket) {
+        socket = new socket_1.Socket(this, nsp, opts);
+        this.nsps[nsp] = socket;
+      }
+
+      return socket;
+    }
+    /**
+     * Called upon a socket close.
+     *
+     * @param socket
+     * @private
+     */
+
+  }, {
+    key: "_destroy",
+    value: function _destroy(socket) {
+      var nsps = Object.keys(this.nsps);
+
+      for (var _i = 0, _nsps = nsps; _i < _nsps.length; _i++) {
+        var nsp = _nsps[_i];
+        var _socket = this.nsps[nsp];
+
+        if (_socket.active) {
+          debug("socket %s is still active, skipping close", nsp);
+          return;
+        }
+      }
+
+      this._close();
+    }
+    /**
+     * Writes a packet.
+     *
+     * @param packet
+     * @private
+     */
+
+  }, {
+    key: "_packet",
+    value: function _packet(packet) {
+      debug("writing packet %j", packet);
+      var encodedPackets = this.encoder.encode(packet);
+
+      for (var i = 0; i < encodedPackets.length; i++) {
+        this.engine.write(encodedPackets[i], packet.options);
+      }
+    }
+    /**
+     * Clean up transport subscriptions and packet buffer.
+     *
+     * @private
+     */
+
+  }, {
+    key: "cleanup",
+    value: function cleanup() {
+      debug("cleanup");
+      this.subs.forEach(function (subDestroy) {
+        return subDestroy();
+      });
+      this.subs.length = 0;
+      this.decoder.destroy();
+    }
+    /**
+     * Close the current socket.
+     *
+     * @private
+     */
+
+  }, {
+    key: "_close",
+    value: function _close() {
+      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();
+    }
+    /**
+     * Alias for close()
+     *
+     * @private
+     */
+
+  }, {
+    key: "disconnect",
+    value: function disconnect() {
+      return this._close();
+    }
+    /**
+     * Called upon engine close.
+     *
+     * @private
+     */
+
+  }, {
+    key: "onclose",
+    value: function onclose(reason) {
+      debug("onclose");
+      this.cleanup();
+      this.backoff.reset();
+      this._readyState = "closed";
+
+      _get(_getPrototypeOf(Manager.prototype), "emit", this).call(this, "close", reason);
+
+      if (this._reconnection && !this.skipReconnect) {
+        this.reconnect();
+      }
+    }
+    /**
+     * Attempt a reconnection.
+     *
+     * @private
+     */
+
+  }, {
+    key: "reconnect",
+    value: function reconnect() {
+      var _this3 = this;
+
+      if (this._reconnecting || this.skipReconnect) return this;
+      var self = this;
+
+      if (this.backoff.attempts >= this._reconnectionAttempts) {
+        debug("reconnect failed");
+        this.backoff.reset();
+
+        _get(_getPrototypeOf(Manager.prototype), "emit", this).call(this, "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");
+
+          _get(_getPrototypeOf(Manager.prototype), "emit", _this3).call(_this3, "reconnect_attempt", self.backoff.attempts); // check again for the case socket closed in above events
+
+
+          if (self.skipReconnect) return;
+          self.open(function (err) {
+            if (err) {
+              debug("reconnect attempt error");
+              self._reconnecting = false;
+              self.reconnect();
+
+              _get(_getPrototypeOf(Manager.prototype), "emit", _this3).call(_this3, "reconnect_error", err);
+            } else {
+              debug("reconnect success");
+              self.onreconnect();
+            }
+          });
+        }, delay);
+        this.subs.push(function subDestroy() {
+          clearTimeout(timer);
+        });
+      }
+    }
+    /**
+     * Called upon successful reconnect.
+     *
+     * @private
+     */
+
+  }, {
+    key: "onreconnect",
+    value: function onreconnect() {
+      var attempt = this.backoff.attempts;
+      this._reconnecting = false;
+      this.backoff.reset();
+
+      _get(_getPrototypeOf(Manager.prototype), "emit", this).call(this, "reconnect", attempt);
+    }
+  }]);
+
+  return Manager;
+}(Emitter);
+
+exports.Manager = Manager;
+
+/***/ }),
+
+/***/ "./build/on.js":
+/*!*********************!*\
+  !*** ./build/on.js ***!
+  \*********************/
+/*! no static exports found */
+/***/ (function(module, exports, __webpack_require__) {
+
+"use strict";
+
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.on = void 0;
+
+function on(obj, ev, fn) {
+  obj.on(ev, fn);
+  return function subDestroy() {
+    obj.off(ev, fn);
+  };
+}
+
+exports.on = on;
+
+/***/ }),
+
+/***/ "./build/socket.js":
+/*!*************************!*\
+  !*** ./build/socket.js ***!
+  \*************************/
+/*! no static exports found */
+/***/ (function(module, exports, __webpack_require__) {
+
+"use strict";
+
+
+function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
+
+function _createForOfIteratorHelper(o, allowArrayLike) { var it; if (typeof Symbol === "undefined" || o[Symbol.iterator] == null) { if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === "number") { if (it) o = it; var i = 0; var F = function F() {}; return { s: F, n: function n() { if (i >= o.length) return { done: true }; return { done: false, value: o[i++] }; }, e: function e(_e) { throw _e; }, f: F }; } throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); } var normalCompletion = true, didErr = false, err; return { s: function s() { it = o[Symbol.iterator](); }, n: function n() { var step = it.next(); normalCompletion = step.done; return step; }, e: function e(_e2) { didErr = true; err = _e2; }, f: function f() { try { if (!normalCompletion && it["return"] != null) it["return"](); } finally { if (didErr) throw err; } } }; }
+
+function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
+
+function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }
+
+function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
+
+function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
+
+function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
+
+function _get(target, property, receiver) { if (typeof Reflect !== "undefined" && Reflect.get) { _get = Reflect.get; } else { _get = function _get(target, property, receiver) { var base = _superPropBase(target, property); if (!base) return; var desc = Object.getOwnPropertyDescriptor(base, property); if (desc.get) { return desc.get.call(receiver); } return desc.value; }; } return _get(target, property, receiver || target); }
+
+function _superPropBase(object, property) { while (!Object.prototype.hasOwnProperty.call(object, property)) { object = _getPrototypeOf(object); if (object === null) break; } return object; }
+
+function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }
+
+function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }
+
+function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }
+
+function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }
+
+function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }
+
+function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Date.prototype.toString.call(Reflect.construct(Date, [], function () {})); return true; } catch (e) { return false; } }
+
+function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.Socket = void 0;
+
+var socket_io_parser_1 = __webpack_require__(/*! socket.io-parser */ "./node_modules/socket.io-parser/dist/index.js");
+
+var Emitter = __webpack_require__(/*! component-emitter */ "./node_modules/component-emitter/index.js");
+
+var on_1 = __webpack_require__(/*! ./on */ "./build/on.js");
+
+var debug = __webpack_require__(/*! debug */ "./node_modules/debug/src/browser.js")("socket.io-client:socket");
+/**
+ * Internal events.
+ * These events can't be emitted by the user.
+ */
+
+
+var RESERVED_EVENTS = Object.freeze({
+  connect: 1,
+  connect_error: 1,
+  disconnect: 1,
+  disconnecting: 1,
+  // EventEmitter reserved events: https://nodejs.org/api/events.html#events_event_newlistener
+  newListener: 1,
+  removeListener: 1
+});
+
+var Socket = /*#__PURE__*/function (_Emitter) {
+  _inherits(Socket, _Emitter);
+
+  var _super = _createSuper(Socket);
+
+  /**
+   * `Socket` constructor.
+   *
+   * @public
+   */
+  function Socket(io, nsp, opts) {
+    var _this;
+
+    _classCallCheck(this, Socket);
+
+    _this = _super.call(this);
+    _this.receiveBuffer = [];
+    _this.sendBuffer = [];
+    _this.ids = 0;
+    _this.acks = {};
+    _this.flags = {};
+    _this.io = io;
+    _this.nsp = nsp;
+    _this.ids = 0;
+    _this.acks = {};
+    _this.receiveBuffer = [];
+    _this.sendBuffer = [];
+    _this.connected = false;
+    _this.disconnected = true;
+    _this.flags = {};
+
+    if (opts && opts.auth) {
+      _this.auth = opts.auth;
+    }
+
+    if (_this.io._autoConnect) _this.open();
+    return _this;
+  }
+  /**
+   * Subscribe to open, close and packet events
+   *
+   * @private
+   */
+
+
+  _createClass(Socket, [{
+    key: "subEvents",
+    value: function subEvents() {
+      if (this.subs) return;
+      var io = this.io;
+      this.subs = [on_1.on(io, "open", this.onopen.bind(this)), on_1.on(io, "packet", this.onpacket.bind(this)), on_1.on(io, "error", this.onerror.bind(this)), on_1.on(io, "close", this.onclose.bind(this))];
+    }
+    /**
+     * Whether the Socket will try to reconnect when its Manager connects or reconnects
+     */
+
+  }, {
+    key: "connect",
+
+    /**
+     * "Opens" the socket.
+     *
+     * @public
+     */
+    value: function connect() {
+      if (this.connected) return this;
+      this.subEvents();
+      if (!this.io["_reconnecting"]) this.io.open(); // ensure open
+
+      if ("open" === this.io._readyState) this.onopen();
+      return this;
+    }
+    /**
+     * Alias for connect()
+     */
+
+  }, {
+    key: "open",
+    value: function open() {
+      return this.connect();
+    }
+    /**
+     * Sends a `message` event.
+     *
+     * @return self
+     * @public
+     */
+
+  }, {
+    key: "send",
+    value: function send() {
+      for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
+        args[_key] = arguments[_key];
+      }
+
+      args.unshift("message");
+      this.emit.apply(this, args);
+      return this;
+    }
+    /**
+     * Override `emit`.
+     * If the event is in `events`, it's emitted normally.
+     *
+     * @param ev - event name
+     * @return self
+     * @public
+     */
+
+  }, {
+    key: "emit",
+    value: function emit(ev) {
+      if (RESERVED_EVENTS.hasOwnProperty(ev)) {
+        throw new Error('"' + ev + '" is a reserved event name');
+      }
+
+      for (var _len2 = arguments.length, args = new Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
+        args[_key2 - 1] = arguments[_key2];
+      }
+
+      args.unshift(ev);
+      var packet = {
+        type: socket_io_parser_1.PacketType.EVENT,
+        data: args
       };
-    } else {
-      _typeof = function (obj) {
-        return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
+      packet.options = {};
+      packet.options.compress = this.flags.compress !== false; // 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++;
+      }
+
+      var isTransportWritable = this.io.engine && this.io.engine.transport && this.io.engine.transport.writable;
+      var discardPacket = this.flags["volatile"] && (!isTransportWritable || !this.connected);
+
+      if (discardPacket) {
+        debug("discard packet as the transport is not currently writable");
+      } else if (this.connected) {
+        this.packet(packet);
+      } else {
+        this.sendBuffer.push(packet);
+      }
+
+      this.flags = {};
+      return this;
+    }
+    /**
+     * Sends a packet.
+     *
+     * @param packet
+     * @private
+     */
+
+  }, {
+    key: "packet",
+    value: function packet(_packet) {
+      _packet.nsp = this.nsp;
+
+      this.io._packet(_packet);
+    }
+    /**
+     * Called upon engine `open`.
+     *
+     * @private
+     */
+
+  }, {
+    key: "onopen",
+    value: function onopen() {
+      var _this2 = this;
+
+      debug("transport is open - connecting");
+
+      if (typeof this.auth == "function") {
+        this.auth(function (data) {
+          _this2.packet({
+            type: socket_io_parser_1.PacketType.CONNECT,
+            data: data
+          });
+        });
+      } else {
+        this.packet({
+          type: socket_io_parser_1.PacketType.CONNECT,
+          data: this.auth
+        });
+      }
+    }
+    /**
+     * Called upon engine or manager `error`.
+     *
+     * @param err
+     * @private
+     */
+
+  }, {
+    key: "onerror",
+    value: function onerror(err) {
+      if (!this.connected) {
+        _get(_getPrototypeOf(Socket.prototype), "emit", this).call(this, "connect_error", err);
+      }
+    }
+    /**
+     * Called upon engine `close`.
+     *
+     * @param reason
+     * @private
+     */
+
+  }, {
+    key: "onclose",
+    value: function onclose(reason) {
+      debug("close (%s)", reason);
+      this.connected = false;
+      this.disconnected = true;
+      delete this.id;
+
+      _get(_getPrototypeOf(Socket.prototype), "emit", this).call(this, "disconnect", reason);
+    }
+    /**
+     * Called with socket packet.
+     *
+     * @param packet
+     * @private
+     */
+
+  }, {
+    key: "onpacket",
+    value: function onpacket(packet) {
+      var sameNamespace = packet.nsp === this.nsp;
+      if (!sameNamespace) return;
+
+      switch (packet.type) {
+        case socket_io_parser_1.PacketType.CONNECT:
+          if (packet.data && packet.data.sid) {
+            var id = packet.data.sid;
+            this.onconnect(id);
+          } else {
+            _get(_getPrototypeOf(Socket.prototype), "emit", this).call(this, "connect_error", new Error("It seems you are trying to reach a Socket.IO server in v2.x with a v3.x client, but they are not compatible (more information here: https://socket.io/docs/v3/migrating-from-2-x-to-3-0/)"));
+          }
+
+          break;
+
+        case socket_io_parser_1.PacketType.EVENT:
+          this.onevent(packet);
+          break;
+
+        case socket_io_parser_1.PacketType.BINARY_EVENT:
+          this.onevent(packet);
+          break;
+
+        case socket_io_parser_1.PacketType.ACK:
+          this.onack(packet);
+          break;
+
+        case socket_io_parser_1.PacketType.BINARY_ACK:
+          this.onack(packet);
+          break;
+
+        case socket_io_parser_1.PacketType.DISCONNECT:
+          this.ondisconnect();
+          break;
+
+        case socket_io_parser_1.PacketType.CONNECT_ERROR:
+          var err = new Error(packet.data.message); // @ts-ignore
+
+          err.data = packet.data.data;
+
+          _get(_getPrototypeOf(Socket.prototype), "emit", this).call(this, "connect_error", err);
+
+          break;
+      }
+    }
+    /**
+     * Called upon a server event.
+     *
+     * @param packet
+     * @private
+     */
+
+  }, {
+    key: "onevent",
+    value: function onevent(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) {
+        this.emitEvent(args);
+      } else {
+        this.receiveBuffer.push(Object.freeze(args));
+      }
+    }
+  }, {
+    key: "emitEvent",
+    value: function emitEvent(args) {
+      if (this._anyListeners && this._anyListeners.length) {
+        var listeners = this._anyListeners.slice();
+
+        var _iterator = _createForOfIteratorHelper(listeners),
+            _step;
+
+        try {
+          for (_iterator.s(); !(_step = _iterator.n()).done;) {
+            var listener = _step.value;
+            listener.apply(this, args);
+          }
+        } catch (err) {
+          _iterator.e(err);
+        } finally {
+          _iterator.f();
+        }
+      }
+
+      _get(_getPrototypeOf(Socket.prototype), "emit", this).apply(this, args);
+    }
+    /**
+     * Produces an ack callback to emit with an event.
+     *
+     * @private
+     */
+
+  }, {
+    key: "ack",
+    value: function ack(id) {
+      var self = this;
+      var sent = false;
+      return function () {
+        // prevent double callbacks
+        if (sent) return;
+        sent = true;
+
+        for (var _len3 = arguments.length, args = new Array(_len3), _key3 = 0; _key3 < _len3; _key3++) {
+          args[_key3] = arguments[_key3];
+        }
+
+        debug("sending ack %j", args);
+        self.packet({
+          type: socket_io_parser_1.PacketType.ACK,
+          id: id,
+          data: args
+        });
       };
     }
-
-    return _typeof(obj);
-  }
-
-  function _classCallCheck(instance, Constructor) {
-    if (!(instance instanceof Constructor)) {
-      throw new TypeError("Cannot call a class as a function");
-    }
-  }
-
-  function _defineProperties(target, props) {
-    for (var i = 0; i < props.length; i++) {
-      var descriptor = props[i];
-      descriptor.enumerable = descriptor.enumerable || false;
-      descriptor.configurable = true;
-      if ("value" in descriptor) descriptor.writable = true;
-      Object.defineProperty(target, descriptor.key, descriptor);
-    }
-  }
-
-  function _createClass(Constructor, protoProps, staticProps) {
-    if (protoProps) _defineProperties(Constructor.prototype, protoProps);
-    if (staticProps) _defineProperties(Constructor, staticProps);
-    return Constructor;
-  }
-
-  function _extends() {
-    _extends = Object.assign || function (target) {
-      for (var i = 1; i < arguments.length; i++) {
-        var source = arguments[i];
-
-        for (var key in source) {
-          if (Object.prototype.hasOwnProperty.call(source, key)) {
-            target[key] = source[key];
+    /**
+     * Called upon a server acknowlegement.
+     *
+     * @param packet
+     * @private
+     */
+
+  }, {
+    key: "onack",
+    value: function onack(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.
+     *
+     * @private
+     */
+
+  }, {
+    key: "onconnect",
+    value: function onconnect(id) {
+      debug("socket connected with id %s", id);
+      this.id = id;
+      this.connected = true;
+      this.disconnected = false;
+
+      _get(_getPrototypeOf(Socket.prototype), "emit", this).call(this, "connect");
+
+      this.emitBuffered();
+    }
+    /**
+     * Emit buffered events (received and emitted).
+     *
+     * @private
+     */
+
+  }, {
+    key: "emitBuffered",
+    value: function emitBuffered() {
+      var _this3 = this;
+
+      this.receiveBuffer.forEach(function (args) {
+        return _this3.emitEvent(args);
+      });
+      this.receiveBuffer = [];
+      this.sendBuffer.forEach(function (packet) {
+        return _this3.packet(packet);
+      });
+      this.sendBuffer = [];
+    }
+    /**
+     * Called upon server disconnect.
+     *
+     * @private
+     */
+
+  }, {
+    key: "ondisconnect",
+    value: function ondisconnect() {
+      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.
+     *
+     * @private
+     */
+
+  }, {
+    key: "destroy",
+    value: function destroy() {
+      if (this.subs) {
+        // clean subscriptions to avoid reconnections
+        this.subs.forEach(function (subDestroy) {
+          return subDestroy();
+        });
+        this.subs = undefined;
+      }
+
+      this.io["_destroy"](this);
+    }
+    /**
+     * Disconnects the socket manually.
+     *
+     * @return self
+     * @public
+     */
+
+  }, {
+    key: "disconnect",
+    value: function disconnect() {
+      if (this.connected) {
+        debug("performing disconnect (%s)", this.nsp);
+        this.packet({
+          type: socket_io_parser_1.PacketType.DISCONNECT
+        });
+      } // remove socket from pool
+
+
+      this.destroy();
+
+      if (this.connected) {
+        // fire events
+        this.onclose("io client disconnect");
+      }
+
+      return this;
+    }
+    /**
+     * Alias for disconnect()
+     *
+     * @return self
+     * @public
+     */
+
+  }, {
+    key: "close",
+    value: function close() {
+      return this.disconnect();
+    }
+    /**
+     * Sets the compress flag.
+     *
+     * @param compress - if `true`, compresses the sending data
+     * @return self
+     * @public
+     */
+
+  }, {
+    key: "compress",
+    value: function compress(_compress) {
+      this.flags.compress = _compress;
+      return this;
+    }
+    /**
+     * Sets a modifier for a subsequent event emission that the event message will be dropped when this socket is not
+     * ready to send messages.
+     *
+     * @returns self
+     * @public
+     */
+
+  }, {
+    key: "onAny",
+
+    /**
+     * Adds a listener that will be fired when any event is emitted. The event name is passed as the first argument to the
+     * callback.
+     *
+     * @param listener
+     * @public
+     */
+    value: function onAny(listener) {
+      this._anyListeners = this._anyListeners || [];
+
+      this._anyListeners.push(listener);
+
+      return this;
+    }
+    /**
+     * Adds a listener that will be fired when any event is emitted. The event name is passed as the first argument to the
+     * callback. The listener is added to the beginning of the listeners array.
+     *
+     * @param listener
+     * @public
+     */
+
+  }, {
+    key: "prependAny",
+    value: function prependAny(listener) {
+      this._anyListeners = this._anyListeners || [];
+
+      this._anyListeners.unshift(listener);
+
+      return this;
+    }
+    /**
+     * Removes the listener that will be fired when any event is emitted.
+     *
+     * @param listener
+     * @public
+     */
+
+  }, {
+    key: "offAny",
+    value: function offAny(listener) {
+      if (!this._anyListeners) {
+        return this;
+      }
+
+      if (listener) {
+        var listeners = this._anyListeners;
+
+        for (var i = 0; i < listeners.length; i++) {
+          if (listener === listeners[i]) {
+            listeners.splice(i, 1);
+            return this;
           }
         }
-      }
-
-      return target;
-    };
-
-    return _extends.apply(this, arguments);
-  }
-
-  function _inherits(subClass, superClass) {
-    if (typeof superClass !== "function" && superClass !== null) {
-      throw new TypeError("Super expression must either be null or a function");
-    }
-
-    subClass.prototype = Object.create(superClass && superClass.prototype, {
-      constructor: {
-        value: subClass,
-        writable: true,
-        configurable: true
-      }
-    });
-    if (superClass) _setPrototypeOf(subClass, superClass);
-  }
-
-  function _getPrototypeOf(o) {
-    _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) {
-      return o.__proto__ || Object.getPrototypeOf(o);
-    };
-    return _getPrototypeOf(o);
-  }
-
-  function _setPrototypeOf(o, p) {
-    _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) {
-      o.__proto__ = p;
-      return o;
-    };
-
-    return _setPrototypeOf(o, p);
-  }
-
-  function _isNativeReflectConstruct() {
-    if (typeof Reflect === "undefined" || !Reflect.construct) return false;
-    if (Reflect.construct.sham) return false;
-    if (typeof Proxy === "function") return true;
-
-    try {
-      Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {}));
+      } else {
+        this._anyListeners = [];
+      }
+
+      return this;
+    }
+    /**
+     * Returns an array of listeners that are listening for any event that is specified. This array can be manipulated,
+     * e.g. to remove listeners.
+     *
+     * @public
+     */
+
+  }, {
+    key: "listenersAny",
+    value: function listenersAny() {
+      return this._anyListeners || [];
+    }
+  }, {
+    key: "active",
+    get: function get() {
+      return !!this.subs;
+    }
+  }, {
+    key: "volatile",
+    get: function get() {
+      this.flags["volatile"] = true;
+      return this;
+    }
+  }]);
+
+  return Socket;
+}(Emitter);
+
+exports.Socket = Socket;
+
+/***/ }),
+
+/***/ "./build/url.js":
+/*!**********************!*\
+  !*** ./build/url.js ***!
+  \**********************/
+/*! no static exports found */
+/***/ (function(module, exports, __webpack_require__) {
+
+"use strict";
+
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.url = void 0;
+
+var parseuri = __webpack_require__(/*! parseuri */ "./node_modules/parseuri/index.js");
+
+var debug = __webpack_require__(/*! debug */ "./node_modules/debug/src/browser.js")("socket.io-client:url");
+/**
+ * URL parser.
+ *
+ * @param uri - url
+ * @param path - the request path of the connection
+ * @param loc - An object meant to mimic window.location.
+ *        Defaults to window.location.
+ * @public
+ */
+
+
+function url(uri) {
+  var path = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : "";
+  var loc = arguments.length > 2 ? arguments[2] : undefined;
+  var obj = uri; // default to window.location
+
+  loc = loc || typeof location !== "undefined" && location;
+  if (null == uri) uri = loc.protocol + "//" + loc.host; // relative path support
+
+  if (typeof uri === "string") {
+    if ("/" === uri.charAt(0)) {
+      if ("/" === uri.charAt(1)) {
+        uri = loc.protocol + uri;
+      } else {
+        uri = loc.host + uri;
+      }
+    }
+
+    if (!/^(https?|wss?):\/\//.test(uri)) {
+      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 + path; // define href
+
+  obj.href = obj.protocol + "://" + host + (loc && loc.port === obj.port ? "" : ":" + obj.port);
+  return obj;
+}
+
+exports.url = url;
+
+/***/ }),
+
+/***/ "./node_modules/backo2/index.js":
+/*!**************************************!*\
+  !*** ./node_modules/backo2/index.js ***!
+  \**************************************/
+/*! no static exports found */
+/***/ (function(module, exports) {
+
+/**
+ * Expose `Backoff`.
+ */
+module.exports = Backoff;
+/**
+ * Initialize backoff timer with `opts`.
+ *
+ * - `min` initial timeout in milliseconds [100]
+ * - `max` max timeout [10000]
+ * - `jitter` [0]
+ * - `factor` [2]
+ *
+ * @param {Object} opts
+ * @api public
+ */
+
+function Backoff(opts) {
+  opts = opts || {};
+  this.ms = opts.min || 100;
+  this.max = opts.max || 10000;
+  this.factor = opts.factor || 2;
+  this.jitter = opts.jitter > 0 && opts.jitter <= 1 ? opts.jitter : 0;
+  this.attempts = 0;
+}
+/**
+ * Return the backoff duration.
+ *
+ * @return {Number}
+ * @api public
+ */
+
+
+Backoff.prototype.duration = function () {
+  var ms = this.ms * Math.pow(this.factor, this.attempts++);
+
+  if (this.jitter) {
+    var rand = Math.random();
+    var deviation = Math.floor(rand * this.jitter * ms);
+    ms = (Math.floor(rand * 10) & 1) == 0 ? ms - deviation : ms + deviation;
+  }
+
+  return Math.min(ms, this.max) | 0;
+};
+/**
+ * Reset the number of attempts.
+ *
+ * @api public
+ */
+
+
+Backoff.prototype.reset = function () {
+  this.attempts = 0;
+};
+/**
+ * Set the minimum duration
+ *
+ * @api public
+ */
+
+
+Backoff.prototype.setMin = function (min) {
+  this.ms = min;
+};
+/**
+ * Set the maximum duration
+ *
+ * @api public
+ */
+
+
+Backoff.prototype.setMax = function (max) {
+  this.max = max;
+};
+/**
+ * Set the jitter
+ *
+ * @api public
+ */
+
+
+Backoff.prototype.setJitter = function (jitter) {
+  this.jitter = jitter;
+};
+
+/***/ }),
+
+/***/ "./node_modules/component-emitter/index.js":
+/*!*************************************************!*\
+  !*** ./node_modules/component-emitter/index.js ***!
+  \*************************************************/
+/*! no static exports found */
+/***/ (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;
+};
+
+/***/ }),
+
+/***/ "./node_modules/debug/src/browser.js":
+/*!*******************************************!*\
+  !*** ./node_modules/debug/src/browser.js ***!
+  \*******************************************/
+/*! no static exports found */
+/***/ (function(module, exports, __webpack_require__) {
+
+/* eslint-env browser */
+
+/**
+ * This is the web browser implementation of `debug()`.
+ */
+exports.formatArgs = formatArgs;
+exports.save = save;
+exports.load = load;
+exports.useColors = useColors;
+exports.storage = localstorage();
+
+exports.destroy = function () {
+  var warned = false;
+  return function () {
+    if (!warned) {
+      warned = true;
+      console.warn('Instance method `debug.destroy()` is deprecated and no longer does anything. It will be removed in the next major version of `debug`.');
+    }
+  };
+}();
+/**
+ * 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.debug()` when available.
+ * No-op when `console.debug` is not a "function".
+ * If `console.debug` is not available, falls back
+ * to `console.log`.
+ *
+ * @api public
+ */
+
+
+exports.log = console.debug || console.log || function () {};
+/**
+ * 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;
+
+  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__(/*! ./common */ "./node_modules/debug/src/common.js")(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;
+  }
+};
+
+/***/ }),
+
+/***/ "./node_modules/debug/src/common.js":
+/*!******************************************!*\
+  !*** ./node_modules/debug/src/common.js ***!
+  \******************************************/
+/*! no static exports found */
+/***/ (function(module, exports, __webpack_require__) {
+
+function _toConsumableArray(arr) { return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _unsupportedIterableToArray(arr) || _nonIterableSpread(); }
+
+function _nonIterableSpread() { throw new TypeError("Invalid attempt to spread non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
+
+function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
+
+function _iterableToArray(iter) { if (typeof Symbol !== "undefined" && Symbol.iterator in Object(iter)) return Array.from(iter); }
+
+function _arrayWithoutHoles(arr) { if (Array.isArray(arr)) return _arrayLikeToArray(arr); }
+
+function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }
+
+/**
+ * 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__(/*! ms */ "./node_modules/ms/index.js");
+  createDebug.destroy = destroy;
+  Object.keys(env).forEach(function (key) {
+    createDebug[key] = env[key];
+  });
+  /**
+  * 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;
+    var enableOverride = null;
+
+    function debug() {
+      for (var _len = arguments.length, args = new 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 '%';
+        }
+
+        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.useColors = createDebug.useColors();
+    debug.color = createDebug.selectColor(namespace);
+    debug.extend = extend;
+    debug.destroy = createDebug.destroy; // XXX Temporary. Will be removed in the next major release.
+
+    Object.defineProperty(debug, 'enabled', {
+      enumerable: true,
+      configurable: false,
+      get: function get() {
+        return enableOverride === null ? createDebug.enabled(namespace) : enableOverride;
+      },
+      set: function set(v) {
+        enableOverride = v;
+      }
+    }); // Env-specific initialization logic for debug instances
+
+    if (typeof createDebug.init === 'function') {
+      createDebug.init(debug);
+    }
+
+    return debug;
+  }
+
+  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;
+    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) + '$'));
+      } else {
+        createDebug.names.push(new RegExp('^' + namespaces + '$'));
+      }
+    }
+  }
+  /**
+  * 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;
-    } catch (e) {
-      return false;
-    }
-  }
-
-  function _assertThisInitialized(self) {
-    if (self === void 0) {
-      throw new ReferenceError("this hasn't been initialised - super() hasn't been called");
-    }
-
+    }
+
+    var i;
+    var len;
+
+    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;
+  }
+  /**
+  * XXX DO NOT USE. This is a temporary stub function.
+  * XXX It WILL be removed in the next major release.
+  */
+
+
+  function destroy() {
+    console.warn('Instance method `debug.destroy()` is deprecated and no longer does anything. It will be removed in the next major version of `debug`.');
+  }
+
+  createDebug.enable(createDebug.load());
+  return createDebug;
+}
+
+module.exports = setup;
+
+/***/ }),
+
+/***/ "./node_modules/engine.io-client/lib/globalThis.browser.js":
+/*!*****************************************************************!*\
+  !*** ./node_modules/engine.io-client/lib/globalThis.browser.js ***!
+  \*****************************************************************/
+/*! no static exports found */
+/***/ (function(module, exports) {
+
+module.exports = function () {
+  if (typeof self !== "undefined") {
     return self;
-  }
-
-  function _possibleConstructorReturn(self, call) {
-    if (call && (typeof call === "object" || typeof call === "function")) {
-      return call;
-    } else if (call !== void 0) {
-      throw new TypeError("Derived constructors may only return object or undefined");
-    }
-
-    return _assertThisInitialized(self);
-  }
-
-  function _createSuper(Derived) {
-    var hasNativeReflectConstruct = _isNativeReflectConstruct();
-
-    return function _createSuperInternal() {
-      var Super = _getPrototypeOf(Derived),
-          result;
-
-      if (hasNativeReflectConstruct) {
-        var NewTarget = _getPrototypeOf(this).constructor;
-
-        result = Reflect.construct(Super, arguments, NewTarget);
-      } else {
-        result = Super.apply(this, arguments);
-      }
-
-      return _possibleConstructorReturn(this, result);
-    };
-  }
-
-  function _superPropBase(object, property) {
-    while (!Object.prototype.hasOwnProperty.call(object, property)) {
-      object = _getPrototypeOf(object);
-      if (object === null) break;
-    }
-
-    return object;
-  }
-
-  function _get(target, property, receiver) {
-    if (typeof Reflect !== "undefined" && Reflect.get) {
-      _get = Reflect.get;
-    } else {
-      _get = function _get(target, property, receiver) {
-        var base = _superPropBase(target, property);
-
-        if (!base) return;
-        var desc = Object.getOwnPropertyDescriptor(base, property);
-
-        if (desc.get) {
-          return desc.get.call(receiver);
+  } else if (typeof window !== "undefined") {
+    return window;
+  } else {
+    return Function("return this")();
+  }
+}();
+
+/***/ }),
+
+/***/ "./node_modules/engine.io-client/lib/index.js":
+/*!****************************************************!*\
+  !*** ./node_modules/engine.io-client/lib/index.js ***!
+  \****************************************************/
+/*! no static exports found */
+/***/ (function(module, exports, __webpack_require__) {
+
+var Socket = __webpack_require__(/*! ./socket */ "./node_modules/engine.io-client/lib/socket.js");
+
+module.exports = function (uri, opts) {
+  return new Socket(uri, opts);
+};
+/**
+ * Expose deps for legacy compatibility
+ * and standalone browser access.
+ */
+
+
+module.exports.Socket = Socket;
+module.exports.protocol = Socket.protocol; // this is an int
+
+module.exports.Transport = __webpack_require__(/*! ./transport */ "./node_modules/engine.io-client/lib/transport.js");
+module.exports.transports = __webpack_require__(/*! ./transports/index */ "./node_modules/engine.io-client/lib/transports/index.js");
+module.exports.parser = __webpack_require__(/*! engine.io-parser */ "./node_modules/engine.io-parser/lib/index.js");
+
+/***/ }),
+
+/***/ "./node_modules/engine.io-client/lib/socket.js":
+/*!*****************************************************!*\
+  !*** ./node_modules/engine.io-client/lib/socket.js ***!
+  \*****************************************************/
+/*! no static exports found */
+/***/ (function(module, exports, __webpack_require__) {
+
+function _extends() { _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; }; return _extends.apply(this, arguments); }
+
+function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
+
+function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
+
+function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
+
+function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
+
+function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }
+
+function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }
+
+function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }
+
+function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }
+
+function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }
+
+function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Date.prototype.toString.call(Reflect.construct(Date, [], function () {})); return true; } catch (e) { return false; } }
+
+function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }
+
+var transports = __webpack_require__(/*! ./transports/index */ "./node_modules/engine.io-client/lib/transports/index.js");
+
+var Emitter = __webpack_require__(/*! component-emitter */ "./node_modules/component-emitter/index.js");
+
+var debug = __webpack_require__(/*! debug */ "./node_modules/debug/src/browser.js")("engine.io-client:socket");
+
+var parser = __webpack_require__(/*! engine.io-parser */ "./node_modules/engine.io-parser/lib/index.js");
+
+var parseuri = __webpack_require__(/*! parseuri */ "./node_modules/parseuri/index.js");
+
+var parseqs = __webpack_require__(/*! parseqs */ "./node_modules/parseqs/index.js");
+
+var Socket = /*#__PURE__*/function (_Emitter) {
+  _inherits(Socket, _Emitter);
+
+  var _super = _createSuper(Socket);
+
+  /**
+   * Socket constructor.
+   *
+   * @param {String|Object} uri or options
+   * @param {Object} options
+   * @api public
+   */
+  function Socket(uri) {
+    var _this;
+
+    var opts = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
+
+    _classCallCheck(this, Socket);
+
+    _this = _super.call(this);
+
+    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.hostname = opts.hostname || (typeof location !== "undefined" ? location.hostname : "localhost");
+    _this.port = opts.port || (typeof location !== "undefined" && location.port ? location.port : _this.secure ? 443 : 80);
+    _this.transports = opts.transports || ["polling", "websocket"];
+    _this.readyState = "";
+    _this.writeBuffer = [];
+    _this.prevBufferLen = 0;
+    _this.opts = _extends({
+      path: "/engine.io",
+      agent: false,
+      withCredentials: false,
+      upgrade: true,
+      jsonp: true,
+      timestampParam: "t",
+      rememberUpgrade: false,
+      rejectUnauthorized: true,
+      perMessageDeflate: {
+        threshold: 1024
+      },
+      transportOptions: {}
+    }, opts);
+    _this.opts.path = _this.opts.path.replace(/\/$/, "") + "/";
+
+    if (typeof _this.opts.query === "string") {
+      _this.opts.query = parseqs.decode(_this.opts.query);
+    } // set on handshake
+
+
+    _this.id = null;
+    _this.upgrades = null;
+    _this.pingInterval = null;
+    _this.pingTimeout = null; // set on heartbeat
+
+    _this.pingTimeoutTimer = null;
+
+    if (typeof addEventListener === "function") {
+      addEventListener("beforeunload", function () {
+        if (_this.transport) {
+          // silently close the transport
+          _this.transport.removeAllListeners();
+
+          _this.transport.close();
         }
-
-        return desc.value;
-      };
-    }
-
-    return _get(target, property, receiver || target);
-  }
-
-  function _unsupportedIterableToArray(o, minLen) {
-    if (!o) return;
-    if (typeof o === "string") return _arrayLikeToArray(o, minLen);
-    var n = Object.prototype.toString.call(o).slice(8, -1);
-    if (n === "Object" && o.constructor) n = o.constructor.name;
-    if (n === "Map" || n === "Set") return Array.from(o);
-    if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen);
-  }
-
-  function _arrayLikeToArray(arr, len) {
-    if (len == null || len > arr.length) len = arr.length;
-
-    for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i];
-
-    return arr2;
-  }
-
-  function _createForOfIteratorHelper(o, allowArrayLike) {
-    var it = typeof Symbol !== "undefined" && o[Symbol.iterator] || o["@@iterator"];
-
-    if (!it) {
-      if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === "number") {
-        if (it) o = it;
-        var i = 0;
-
-        var F = function () {};
-
-        return {
-          s: F,
-          n: function () {
-            if (i >= o.length) return {
-              done: true
-            };
-            return {
-              done: false,
-              value: o[i++]
-            };
-          },
-          e: function (e) {
-            throw e;
-          },
-          f: F
-        };
-      }
-
-      throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
-    }
-
-    var normalCompletion = true,
-        didErr = false,
-        err;
-    return {
-      s: function () {
-        it = it.call(o);
-      },
-      n: function () {
-        var step = it.next();
-        normalCompletion = step.done;
-        return step;
-      },
-      e: function (e) {
-        didErr = true;
-        err = e;
-      },
-      f: function () {
-        try {
-          if (!normalCompletion && it.return != null) it.return();
-        } finally {
-          if (didErr) throw err;
-        }
-      }
-    };
-  }
-
+      }, false);
+    }
+
+    _this.open();
+
+    return _this;
+  }
   /**
-   * Parses an URI
+   * Creates transport of the given type.
    *
-   * @author Steven Levithan <stevenlevithan.com> (MIT license)
+   * @param {String} transport name
+   * @return {Transport}
    * @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'];
-
-  var parseuri = 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;
-    }
-
-    uri.pathNames = pathNames(uri, uri['path']);
-    uri.queryKey = queryKey(uri, uri['query']);
-    return uri;
-  };
-
-  function pathNames(obj, path) {
-    var regx = /\/{2,9}/g,
-        names = path.replace(regx, "/").split("/");
-
-    if (path.substr(0, 1) == '/' || path.length === 0) {
-      names.splice(0, 1);
-    }
-
-    if (path.substr(path.length - 1, 1) == '/') {
-      names.splice(names.length - 1, 1);
-    }
-
-    return names;
-  }
-
-  function queryKey(uri, query) {
-    var data = {};
-    query.replace(/(?:^|&)([^&=]*)=?([^&]*)/g, function ($0, $1, $2) {
-      if ($1) {
-        data[$1] = $2;
-      }
-    });
-    return data;
-  }
+
+
+  _createClass(Socket, [{
+    key: "createTransport",
+    value: function createTransport(name) {
+      debug('creating transport "%s"', name);
+      var query = clone(this.opts.query); // append engine.io protocol identifier
+
+      query.EIO = parser.protocol; // transport name
+
+      query.transport = name; // session id if we already have one
+
+      if (this.id) query.sid = this.id;
+
+      var opts = _extends({}, this.opts.transportOptions[name], this.opts, {
+        query: query,
+        socket: this,
+        hostname: this.hostname,
+        secure: this.secure,
+        port: this.port
+      });
+
+      debug("options: %j", opts);
+      return new transports[name](opts);
+    }
+    /**
+     * Initializes transport to use and starts probe.
+     *
+     * @api private
+     */
+
+  }, {
+    key: "open",
+    value: function open() {
+      var transport;
+
+      if (this.opts.rememberUpgrade && Socket.priorWebsocketSuccess && this.transports.indexOf("websocket") !== -1) {
+        transport = "websocket";
+      } else if (0 === this.transports.length) {
+        // Emit error on next tick so it can be listened to
+        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) {
+        debug("error while creating transport: %s", e);
+        this.transports.shift();
+        this.open();
+        return;
+      }
+
+      transport.open();
+      this.setTransport(transport);
+    }
+    /**
+     * Sets the current transport. Disables the existing one (if any).
+     *
+     * @api private
+     */
+
+  }, {
+    key: "setTransport",
+    value: function setTransport(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
+     */
+
+  }, {
+    key: "probe",
+    value: function probe(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
+     */
+
+  }, {
+    key: "onOpen",
+    value: function onOpen() {
+      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.opts.upgrade && this.transport.pause) {
+        debug("starting upgrade probes");
+        var i = 0;
+        var l = this.upgrades.length;
+
+        for (; i < l; i++) {
+          this.probe(this.upgrades[i]);
+        }
+      }
+    }
+    /**
+     * Handles a packet.
+     *
+     * @api private
+     */
+
+  }, {
+    key: "onPacket",
+    value: function onPacket(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 "ping":
+            this.resetPingTimeout();
+            this.sendPacket("pong");
+            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
+     */
+
+  }, {
+    key: "onHandshake",
+    value: function onHandshake(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.resetPingTimeout();
+    }
+    /**
+     * Sets and resets ping timeout timer based on server pings.
+     *
+     * @api private
+     */
+
+  }, {
+    key: "resetPingTimeout",
+    value: function resetPingTimeout() {
+      var _this2 = this;
+
+      clearTimeout(this.pingTimeoutTimer);
+      this.pingTimeoutTimer = setTimeout(function () {
+        _this2.onClose("ping timeout");
+      }, this.pingInterval + this.pingTimeout);
+    }
+    /**
+     * Called on `drain` event
+     *
+     * @api private
+     */
+
+  }, {
+    key: "onDrain",
+    value: function onDrain() {
+      this.writeBuffer.splice(0, this.prevBufferLen); // setting prevBufferLen = 0 is very important
+      // for example, when upgrading, upgrade packet is sent over,
+      // and a nonzero prevBufferLen could cause problems on `drain`
+
+      this.prevBufferLen = 0;
+
+      if (0 === this.writeBuffer.length) {
+        this.emit("drain");
+      } else {
+        this.flush();
+      }
+    }
+    /**
+     * Flush write buffers.
+     *
+     * @api private
+     */
+
+  }, {
+    key: "flush",
+    value: function flush() {
+      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
+     */
+
+  }, {
+    key: "write",
+    value: function write(msg, options, fn) {
+      this.sendPacket("message", msg, options, fn);
+      return this;
+    }
+  }, {
+    key: "send",
+    value: function send(msg, options, fn) {
+      this.sendPacket("message", msg, options, fn);
+      return this;
+    }
+    /**
+     * Sends a packet.
+     *
+     * @param {String} packet type.
+     * @param {String} data.
+     * @param {Object} options.
+     * @param {Function} callback function.
+     * @api private
+     */
+
+  }, {
+    key: "sendPacket",
+    value: function sendPacket(type, data, options, fn) {
+      if ("function" === typeof data) {
+        fn = data;
+        data = undefined;
+      }
+
+      if ("function" === typeof options) {
+        fn = options;
+        options = null;
+      }
+
+      if ("closing" === this.readyState || "closed" === this.readyState) {
+        return;
+      }
+
+      options = options || {};
+      options.compress = false !== options.compress;
+      var packet = {
+        type: type,
+        data: data,
+        options: options
+      };
+      this.emit("packetCreate", packet);
+      this.writeBuffer.push(packet);
+      if (fn) this.once("flush", fn);
+      this.flush();
+    }
+    /**
+     * Closes the connection.
+     *
+     * @api private
+     */
+
+  }, {
+    key: "close",
+    value: function close() {
+      var self = this;
+
+      if ("opening" === this.readyState || "open" === this.readyState) {
+        this.readyState = "closing";
+
+        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
+     */
+
+  }, {
+    key: "onError",
+    value: function onError(err) {
+      debug("socket error %j", err);
+      Socket.priorWebsocketSuccess = false;
+      this.emit("error", err);
+      this.onClose("transport error", err);
+    }
+    /**
+     * Called upon transport close.
+     *
+     * @api private
+     */
+
+  }, {
+    key: "onClose",
+    value: function onClose(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
+     *
+     */
+
+  }, {
+    key: "filterUpgrades",
+    value: function filterUpgrades(upgrades) {
+      var filteredUpgrades = [];
+      var i = 0;
+      var j = upgrades.length;
+
+      for (; i < j; i++) {
+        if (~this.transports.indexOf(upgrades[i])) filteredUpgrades.push(upgrades[i]);
+      }
+
+      return filteredUpgrades;
+    }
+  }]);
+
+  return Socket;
+}(Emitter);
+
+Socket.priorWebsocketSuccess = false;
+/**
+ * Protocol version.
+ *
+ * @api public
+ */
+
+Socket.protocol = parser.protocol; // this is an int
+
+function clone(obj) {
+  var o = {};
+
+  for (var i in obj) {
+    if (obj.hasOwnProperty(i)) {
+      o[i] = obj[i];
+    }
+  }
+
+  return o;
+}
+
+module.exports = Socket;
+
+/***/ }),
+
+/***/ "./node_modules/engine.io-client/lib/transport.js":
+/*!********************************************************!*\
+  !*** ./node_modules/engine.io-client/lib/transport.js ***!
+  \********************************************************/
+/*! no static exports found */
+/***/ (function(module, exports, __webpack_require__) {
+
+function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
+
+function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
+
+function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
+
+function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
+
+function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }
+
+function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }
+
+function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }
+
+function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }
+
+function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }
+
+function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Date.prototype.toString.call(Reflect.construct(Date, [], function () {})); return true; } catch (e) { return false; } }
+
+function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }
+
+var parser = __webpack_require__(/*! engine.io-parser */ "./node_modules/engine.io-parser/lib/index.js");
+
+var Emitter = __webpack_require__(/*! component-emitter */ "./node_modules/component-emitter/index.js");
+
+var Transport = /*#__PURE__*/function (_Emitter) {
+  _inherits(Transport, _Emitter);
+
+  var _super = _createSuper(Transport);
 
   /**
-   * URL parser.
+   * Transport abstract constructor.
    *
-   * @param uri - url
-   * @param path - the request path of the connection
-   * @param loc - An object meant to mimic window.location.
-   *        Defaults to window.location.
-   * @public
+   * @param {Object} options.
+   * @api private
    */
-
-  function url(uri) {
-    var path = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : "";
-    var loc = arguments.length > 2 ? arguments[2] : undefined;
-    var obj = uri; // default to window.location
-
-    loc = loc || typeof location !== "undefined" && location;
-    if (null == uri) uri = loc.protocol + "//" + loc.host; // relative path support
-
-    if (typeof uri === "string") {
-      if ("/" === uri.charAt(0)) {
-        if ("/" === uri.charAt(1)) {
-          uri = loc.protocol + uri;
+  function Transport(opts) {
+    var _this;
+
+    _classCallCheck(this, Transport);
+
+    _this = _super.call(this);
+    _this.opts = opts;
+    _this.query = opts.query;
+    _this.readyState = "";
+    _this.socket = opts.socket;
+    return _this;
+  }
+  /**
+   * Emits an error.
+   *
+   * @param {String} str
+   * @return {Transport} for chaining
+   * @api public
+   */
+
+
+  _createClass(Transport, [{
+    key: "onError",
+    value: function onError(msg, desc) {
+      var err = new Error(msg);
+      err.type = "TransportError";
+      err.description = desc;
+      this.emit("error", err);
+      return this;
+    }
+    /**
+     * Opens the transport.
+     *
+     * @api public
+     */
+
+  }, {
+    key: "open",
+    value: function open() {
+      if ("closed" === this.readyState || "" === this.readyState) {
+        this.readyState = "opening";
+        this.doOpen();
+      }
+
+      return this;
+    }
+    /**
+     * Closes the transport.
+     *
+     * @api private
+     */
+
+  }, {
+    key: "close",
+    value: function close() {
+      if ("opening" === this.readyState || "open" === this.readyState) {
+        this.doClose();
+        this.onClose();
+      }
+
+      return this;
+    }
+    /**
+     * Sends multiple packets.
+     *
+     * @param {Array} packets
+     * @api private
+     */
+
+  }, {
+    key: "send",
+    value: function send(packets) {
+      if ("open" === this.readyState) {
+        this.write(packets);
+      } else {
+        throw new Error("Transport not open");
+      }
+    }
+    /**
+     * Called upon open
+     *
+     * @api private
+     */
+
+  }, {
+    key: "onOpen",
+    value: function onOpen() {
+      this.readyState = "open";
+      this.writable = true;
+      this.emit("open");
+    }
+    /**
+     * Called with data.
+     *
+     * @param {String} data
+     * @api private
+     */
+
+  }, {
+    key: "onData",
+    value: function onData(data) {
+      var packet = parser.decodePacket(data, this.socket.binaryType);
+      this.onPacket(packet);
+    }
+    /**
+     * Called with a decoded packet.
+     */
+
+  }, {
+    key: "onPacket",
+    value: function onPacket(packet) {
+      this.emit("packet", packet);
+    }
+    /**
+     * Called upon close.
+     *
+     * @api private
+     */
+
+  }, {
+    key: "onClose",
+    value: function onClose() {
+      this.readyState = "closed";
+      this.emit("close");
+    }
+  }]);
+
+  return Transport;
+}(Emitter);
+
+module.exports = Transport;
+
+/***/ }),
+
+/***/ "./node_modules/engine.io-client/lib/transports/index.js":
+/*!***************************************************************!*\
+  !*** ./node_modules/engine.io-client/lib/transports/index.js ***!
+  \***************************************************************/
+/*! no static exports found */
+/***/ (function(module, exports, __webpack_require__) {
+
+var XMLHttpRequest = __webpack_require__(/*! xmlhttprequest-ssl */ "./node_modules/engine.io-client/lib/xmlhttprequest.js");
+
+var XHR = __webpack_require__(/*! ./polling-xhr */ "./node_modules/engine.io-client/lib/transports/polling-xhr.js");
+
+var JSONP = __webpack_require__(/*! ./polling-jsonp */ "./node_modules/engine.io-client/lib/transports/polling-jsonp.js");
+
+var websocket = __webpack_require__(/*! ./websocket */ "./node_modules/engine.io-client/lib/transports/websocket.js");
+
+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);
+  }
+}
+
+/***/ }),
+
+/***/ "./node_modules/engine.io-client/lib/transports/polling-jsonp.js":
+/*!***********************************************************************!*\
+  !*** ./node_modules/engine.io-client/lib/transports/polling-jsonp.js ***!
+  \***********************************************************************/
+/*! no static exports found */
+/***/ (function(module, exports, __webpack_require__) {
+
+function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
+
+function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
+
+function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
+
+function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
+
+function _get(target, property, receiver) { if (typeof Reflect !== "undefined" && Reflect.get) { _get = Reflect.get; } else { _get = function _get(target, property, receiver) { var base = _superPropBase(target, property); if (!base) return; var desc = Object.getOwnPropertyDescriptor(base, property); if (desc.get) { return desc.get.call(receiver); } return desc.value; }; } return _get(target, property, receiver || target); }
+
+function _superPropBase(object, property) { while (!Object.prototype.hasOwnProperty.call(object, property)) { object = _getPrototypeOf(object); if (object === null) break; } return object; }
+
+function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }
+
+function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }
+
+function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }
+
+function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }
+
+function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }
+
+function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Date.prototype.toString.call(Reflect.construct(Date, [], function () {})); return true; } catch (e) { return false; } }
+
+function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }
+
+var Polling = __webpack_require__(/*! ./polling */ "./node_modules/engine.io-client/lib/transports/polling.js");
+
+var globalThis = __webpack_require__(/*! ../globalThis */ "./node_modules/engine.io-client/lib/globalThis.browser.js");
+
+var rNewline = /\n/g;
+var rEscapedNewline = /\\n/g;
+/**
+ * Global JSONP callbacks.
+ */
+
+var callbacks;
+
+var JSONPPolling = /*#__PURE__*/function (_Polling) {
+  _inherits(JSONPPolling, _Polling);
+
+  var _super = _createSuper(JSONPPolling);
+
+  /**
+   * JSONP Polling constructor.
+   *
+   * @param {Object} opts.
+   * @api public
+   */
+  function JSONPPolling(opts) {
+    var _this;
+
+    _classCallCheck(this, JSONPPolling);
+
+    _this = _super.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 = _assertThisInitialized(_this);
+
+    callbacks.push(function (msg) {
+      self.onData(msg);
+    }); // append to query string
+
+    _this.query.j = _this.index;
+    return _this;
+  }
+  /**
+   * JSONP only supports binary as base64 encoded strings
+   */
+
+
+  _createClass(JSONPPolling, [{
+    key: "doClose",
+
+    /**
+     * Closes the socket.
+     *
+     * @api private
+     */
+    value: function doClose() {
+      if (this.script) {
+        // prevent spurious errors from being emitted when the window is unloaded
+        this.script.onerror = function () {};
+
+        this.script.parentNode.removeChild(this.script);
+        this.script = null;
+      }
+
+      if (this.form) {
+        this.form.parentNode.removeChild(this.form);
+        this.form = null;
+        this.iframe = null;
+      }
+
+      _get(_getPrototypeOf(JSONPPolling.prototype), "doClose", this).call(this);
+    }
+    /**
+     * Starts a poll cycle.
+     *
+     * @api private
+     */
+
+  }, {
+    key: "doPoll",
+    value: function doPoll() {
+      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
+     */
+
+  }, {
+    key: "doWrite",
+    value: function doWrite(data, fn) {
+      var self = this;
+      var iframe;
+
+      if (!this.form) {
+        var form = document.createElement("form");
+        var area = document.createElement("textarea");
+        var id = this.iframeId = "eio_iframe_" + this.index;
+        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;
+      }
+    }
+  }, {
+    key: "supportsBinary",
+    get: function get() {
+      return false;
+    }
+  }]);
+
+  return JSONPPolling;
+}(Polling);
+
+module.exports = JSONPPolling;
+
+/***/ }),
+
+/***/ "./node_modules/engine.io-client/lib/transports/polling-xhr.js":
+/*!*********************************************************************!*\
+  !*** ./node_modules/engine.io-client/lib/transports/polling-xhr.js ***!
+  \*********************************************************************/
+/*! no static exports found */
+/***/ (function(module, exports, __webpack_require__) {
+
+function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
+
+function _extends() { _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; }; return _extends.apply(this, arguments); }
+
+function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
+
+function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
+
+function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
+
+function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }
+
+function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }
+
+function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }
+
+function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }
+
+function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }
+
+function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Date.prototype.toString.call(Reflect.construct(Date, [], function () {})); return true; } catch (e) { return false; } }
+
+function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }
+
+/* global attachEvent */
+var XMLHttpRequest = __webpack_require__(/*! xmlhttprequest-ssl */ "./node_modules/engine.io-client/lib/xmlhttprequest.js");
+
+var Polling = __webpack_require__(/*! ./polling */ "./node_modules/engine.io-client/lib/transports/polling.js");
+
+var Emitter = __webpack_require__(/*! component-emitter */ "./node_modules/component-emitter/index.js");
+
+var _require = __webpack_require__(/*! ../util */ "./node_modules/engine.io-client/lib/util.js"),
+    pick = _require.pick;
+
+var globalThis = __webpack_require__(/*! ../globalThis */ "./node_modules/engine.io-client/lib/globalThis.browser.js");
+
+var debug = __webpack_require__(/*! debug */ "./node_modules/debug/src/browser.js")("engine.io-client:polling-xhr");
+/**
+ * Empty function
+ */
+
+
+function empty() {}
+
+var hasXHR2 = function () {
+  var xhr = new XMLHttpRequest({
+    xdomain: false
+  });
+  return null != xhr.responseType;
+}();
+
+var XHR = /*#__PURE__*/function (_Polling) {
+  _inherits(XHR, _Polling);
+
+  var _super = _createSuper(XHR);
+
+  /**
+   * XHR Polling constructor.
+   *
+   * @param {Object} opts
+   * @api public
+   */
+  function XHR(opts) {
+    var _this;
+
+    _classCallCheck(this, XHR);
+
+    _this = _super.call(this, opts);
+
+    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;
+    }
+    /**
+     * XHR supports binary
+     */
+
+
+    var forceBase64 = opts && opts.forceBase64;
+    _this.supportsBinary = hasXHR2 && !forceBase64;
+    return _this;
+  }
+  /**
+   * Creates a request.
+   *
+   * @param {String} method
+   * @api private
+   */
+
+
+  _createClass(XHR, [{
+    key: "request",
+    value: function request() {
+      var opts = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
+
+      _extends(opts, {
+        xd: this.xd,
+        xs: this.xs
+      }, this.opts);
+
+      return new Request(this.uri(), opts);
+    }
+    /**
+     * Sends data.
+     *
+     * @param {String} data to send.
+     * @param {Function} called upon flush.
+     * @api private
+     */
+
+  }, {
+    key: "doWrite",
+    value: function doWrite(data, fn) {
+      var req = this.request({
+        method: "POST",
+        data: data
+      });
+      var self = this;
+      req.on("success", fn);
+      req.on("error", function (err) {
+        self.onError("xhr post error", err);
+      });
+    }
+    /**
+     * Starts a poll cycle.
+     *
+     * @api private
+     */
+
+  }, {
+    key: "doPoll",
+    value: function doPoll() {
+      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;
+    }
+  }]);
+
+  return XHR;
+}(Polling);
+
+var Request = /*#__PURE__*/function (_Emitter) {
+  _inherits(Request, _Emitter);
+
+  var _super2 = _createSuper(Request);
+
+  /**
+   * Request constructor
+   *
+   * @param {Object} options
+   * @api public
+   */
+  function Request(uri, opts) {
+    var _this2;
+
+    _classCallCheck(this, Request);
+
+    _this2 = _super2.call(this);
+    _this2.opts = opts;
+    _this2.method = opts.method || "GET";
+    _this2.uri = uri;
+    _this2.async = false !== opts.async;
+    _this2.data = undefined !== opts.data ? opts.data : null;
+
+    _this2.create();
+
+    return _this2;
+  }
+  /**
+   * Creates the XHR object and sends the request.
+   *
+   * @api private
+   */
+
+
+  _createClass(Request, [{
+    key: "create",
+    value: function create() {
+      var opts = pick(this.opts, "agent", "enablesXDR", "pfx", "key", "passphrase", "cert", "ca", "ciphers", "rejectUnauthorized");
+      opts.xdomain = !!this.opts.xd;
+      opts.xscheme = !!this.opts.xs;
+      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.opts.extraHeaders) {
+            xhr.setDisableHeaderCheck && xhr.setDisableHeaderCheck(true);
+
+            for (var i in this.opts.extraHeaders) {
+              if (this.opts.extraHeaders.hasOwnProperty(i)) {
+                xhr.setRequestHeader(i, this.opts.extraHeaders[i]);
+              }
+            }
+          }
+        } catch (e) {}
+
+        if ("POST" === this.method) {
+          try {
+            xhr.setRequestHeader("Content-type", "text/plain;charset=UTF-8");
+          } catch (e) {}
+        }
+
+        try {
+          xhr.setRequestHeader("Accept", "*/*");
+        } catch (e) {} // ie6 check
+
+
+        if ("withCredentials" in xhr) {
+          xhr.withCredentials = this.opts.withCredentials;
+        }
+
+        if (this.opts.requestTimeout) {
+          xhr.timeout = this.opts.requestTimeout;
+        }
+
+        if (this.hasXDR()) {
+          xhr.onload = function () {
+            self.onLoad();
+          };
+
+          xhr.onerror = function () {
+            self.onError(xhr.responseText);
+          };
         } else {
-          uri = loc.host + uri;
+          xhr.onreadystatechange = function () {
+            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);
+            }
+          };
         }
-      }
-
-      if (!/^(https?|wss?):\/\//.test(uri)) {
-        if ("undefined" !== typeof loc) {
-          uri = loc.protocol + "//" + uri;
+
+        debug("xhr data %s", this.data);
+        xhr.send(this.data);
+      } catch (e) {
+        // Need to defer since .create() is called directly from the constructor
+        // and thus the 'error' event can only be only bound *after* this exception
+        // occurs.  Therefore, also, we cannot throw here at all.
+        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
+     */
+
+  }, {
+    key: "onSuccess",
+    value: function onSuccess() {
+      this.emit("success");
+      this.cleanup();
+    }
+    /**
+     * Called if we have data.
+     *
+     * @api private
+     */
+
+  }, {
+    key: "onData",
+    value: function onData(data) {
+      this.emit("data", data);
+      this.onSuccess();
+    }
+    /**
+     * Called upon error.
+     *
+     * @api private
+     */
+
+  }, {
+    key: "onError",
+    value: function onError(err) {
+      this.emit("error", err);
+      this.cleanup(true);
+    }
+    /**
+     * Cleans up house.
+     *
+     * @api private
+     */
+
+  }, {
+    key: "cleanup",
+    value: function cleanup(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
+     */
+
+  }, {
+    key: "onLoad",
+    value: function onLoad() {
+      var data = this.xhr.responseText;
+
+      if (data !== null) {
+        this.onData(data);
+      }
+    }
+    /**
+     * Check if it has XDomainRequest.
+     *
+     * @api private
+     */
+
+  }, {
+    key: "hasXDR",
+    value: function hasXDR() {
+      return typeof XDomainRequest !== "undefined" && !this.xs && this.enablesXDR;
+    }
+    /**
+     * Aborts the request.
+     *
+     * @api public
+     */
+
+  }, {
+    key: "abort",
+    value: function abort() {
+      this.cleanup();
+    }
+  }]);
+
+  return Request;
+}(Emitter);
+/**
+ * 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();
+    }
+  }
+}
+
+module.exports = XHR;
+module.exports.Request = Request;
+
+/***/ }),
+
+/***/ "./node_modules/engine.io-client/lib/transports/polling.js":
+/*!*****************************************************************!*\
+  !*** ./node_modules/engine.io-client/lib/transports/polling.js ***!
+  \*****************************************************************/
+/*! no static exports found */
+/***/ (function(module, exports, __webpack_require__) {
+
+function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
+
+function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
+
+function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
+
+function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
+
+function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }
+
+function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }
+
+function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }
+
+function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }
+
+function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }
+
+function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Date.prototype.toString.call(Reflect.construct(Date, [], function () {})); return true; } catch (e) { return false; } }
+
+function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }
+
+var Transport = __webpack_require__(/*! ../transport */ "./node_modules/engine.io-client/lib/transport.js");
+
+var parseqs = __webpack_require__(/*! parseqs */ "./node_modules/parseqs/index.js");
+
+var parser = __webpack_require__(/*! engine.io-parser */ "./node_modules/engine.io-parser/lib/index.js");
+
+var yeast = __webpack_require__(/*! yeast */ "./node_modules/yeast/index.js");
+
+var debug = __webpack_require__(/*! debug */ "./node_modules/debug/src/browser.js")("engine.io-client:polling");
+
+var Polling = /*#__PURE__*/function (_Transport) {
+  _inherits(Polling, _Transport);
+
+  var _super = _createSuper(Polling);
+
+  function Polling() {
+    _classCallCheck(this, Polling);
+
+    return _super.apply(this, arguments);
+  }
+
+  _createClass(Polling, [{
+    key: "doOpen",
+
+    /**
+     * Opens the socket (triggers polling). We write a PING message to determine
+     * when the transport is open.
+     *
+     * @api private
+     */
+    value: function doOpen() {
+      this.poll();
+    }
+    /**
+     * Pauses polling.
+     *
+     * @param {Function} callback upon buffers are flushed and transport is paused
+     * @api private
+     */
+
+  }, {
+    key: "pause",
+    value: function pause(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
+     */
+
+  }, {
+    key: "poll",
+    value: function poll() {
+      debug("polling");
+      this.polling = true;
+      this.doPoll();
+      this.emit("poll");
+    }
+    /**
+     * Overloads onData to detect payloads.
+     *
+     * @api private
+     */
+
+  }, {
+    key: "onData",
+    value: function onData(data) {
+      var self = this;
+      debug("polling got data %s", data);
+
+      var callback = function callback(packet, index, total) {
+        // if its the first message we consider the transport open
+        if ("opening" === self.readyState && packet.type === "open") {
+          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).forEach(callback); // if an event did not trigger closing
+
+      if ("closed" !== this.readyState) {
+        // if we got data we're not polling
+        this.polling = false;
+        this.emit("pollComplete");
+
+        if ("open" === this.readyState) {
+          this.poll();
         } else {
-          uri = "https://" + uri;
+          debug('ignoring poll - transport state "%s"', this.readyState);
         }
-      } // parse
-
-
-      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 + path; // define href
-
-    obj.href = obj.protocol + "://" + host + (loc && loc.port === obj.port ? "" : ":" + obj.port);
-    return obj;
-  }
-
-  var hasCors = {exports: {}};
+      }
+    }
+    /**
+     * For polling, send a close packet.
+     *
+     * @api private
+     */
+
+  }, {
+    key: "doClose",
+    value: function doClose() {
+      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
+     */
+
+  }, {
+    key: "write",
+    value: function write(packets) {
+      var _this = this;
+
+      this.writable = false;
+      parser.encodePayload(packets, function (data) {
+        _this.doWrite(data, function () {
+          _this.writable = true;
+
+          _this.emit("drain");
+        });
+      });
+    }
+    /**
+     * Generates uri for connection.
+     *
+     * @api private
+     */
+
+  }, {
+    key: "uri",
+    value: function uri() {
+      var query = this.query || {};
+      var schema = this.opts.secure ? "https" : "http";
+      var port = ""; // cache busting is forced
+
+      if (false !== this.opts.timestampRequests) {
+        query[this.opts.timestampParam] = yeast();
+      }
+
+      if (!this.supportsBinary && !query.sid) {
+        query.b64 = 1;
+      }
+
+      query = parseqs.encode(query); // avoid port if default for schema
+
+      if (this.opts.port && ("https" === schema && Number(this.opts.port) !== 443 || "http" === schema && Number(this.opts.port) !== 80)) {
+        port = ":" + this.opts.port;
+      } // prepend ? to query
+
+
+      if (query.length) {
+        query = "?" + query;
+      }
+
+      var ipv6 = this.opts.hostname.indexOf(":") !== -1;
+      return schema + "://" + (ipv6 ? "[" + this.opts.hostname + "]" : this.opts.hostname) + port + this.opts.path + query;
+    }
+  }, {
+    key: "name",
+
+    /**
+     * Transport name.
+     */
+    get: function get() {
+      return "polling";
+    }
+  }]);
+
+  return Polling;
+}(Transport);
+
+module.exports = Polling;
+
+/***/ }),
+
+/***/ "./node_modules/engine.io-client/lib/transports/websocket-constructor.browser.js":
+/*!***************************************************************************************!*\
+  !*** ./node_modules/engine.io-client/lib/transports/websocket-constructor.browser.js ***!
+  \***************************************************************************************/
+/*! no static exports found */
+/***/ (function(module, exports, __webpack_require__) {
+
+var globalThis = __webpack_require__(/*! ../globalThis */ "./node_modules/engine.io-client/lib/globalThis.browser.js");
+
+module.exports = {
+  WebSocket: globalThis.WebSocket || globalThis.MozWebSocket,
+  usingBrowserWebSocket: true,
+  defaultBinaryType: "arraybuffer"
+};
+
+/***/ }),
+
+/***/ "./node_modules/engine.io-client/lib/transports/websocket.js":
+/*!*******************************************************************!*\
+  !*** ./node_modules/engine.io-client/lib/transports/websocket.js ***!
+  \*******************************************************************/
+/*! no static exports found */
+/***/ (function(module, exports, __webpack_require__) {
+
+function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
+
+function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
+
+function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
+
+function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
+
+function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }
+
+function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }
+
+function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }
+
+function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }
+
+function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }
+
+function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Date.prototype.toString.call(Reflect.construct(Date, [], function () {})); return true; } catch (e) { return false; } }
+
+function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }
+
+var Transport = __webpack_require__(/*! ../transport */ "./node_modules/engine.io-client/lib/transport.js");
+
+var parser = __webpack_require__(/*! engine.io-parser */ "./node_modules/engine.io-parser/lib/index.js");
+
+var parseqs = __webpack_require__(/*! parseqs */ "./node_modules/parseqs/index.js");
+
+var yeast = __webpack_require__(/*! yeast */ "./node_modules/yeast/index.js");
+
+var _require = __webpack_require__(/*! ../util */ "./node_modules/engine.io-client/lib/util.js"),
+    pick = _require.pick;
+
+var _require2 = __webpack_require__(/*! ./websocket-constructor */ "./node_modules/engine.io-client/lib/transports/websocket-constructor.browser.js"),
+    WebSocket = _require2.WebSocket,
+    usingBrowserWebSocket = _require2.usingBrowserWebSocket,
+    defaultBinaryType = _require2.defaultBinaryType;
+
+var debug = __webpack_require__(/*! debug */ "./node_modules/debug/src/browser.js")("engine.io-client:websocket"); // detect ReactNative environment
+
+
+var isReactNative = typeof navigator !== "undefined" && typeof navigator.product === "string" && navigator.product.toLowerCase() === "reactnative";
+
+var WS = /*#__PURE__*/function (_Transport) {
+  _inherits(WS, _Transport);
+
+  var _super = _createSuper(WS);
 
   /**
-   * Module exports.
+   * WebSocket transport constructor.
    *
-   * Logic borrowed from Modernizr:
-   *
-   *   - https://github.com/Modernizr/Modernizr/blob/master/feature-detects/cors.js
+   * @api {Object} connection options
+   * @api public
    */
-
-  try {
-    hasCors.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
-    hasCors.exports = false;
-  }
-
-  var hasCORS = hasCors.exports;
-
-  var globalThis = (function () {
-    if (typeof self !== "undefined") {
-      return self;
-    } else if (typeof window !== "undefined") {
-      return window;
-    } else {
-      return Function("return this")();
-    }
-  })();
-
-  // browser shim for xmlhttprequest module
-  function XMLHttpRequest$1 (opts) {
-    var xdomain = opts.xdomain; // XMLHttpRequest can be disabled on IE
-
-    try {
-      if ("undefined" !== typeof XMLHttpRequest && (!xdomain || hasCORS)) {
-        return new XMLHttpRequest();
-      }
-    } catch (e) {}
-
-    if (!xdomain) {
-      try {
-        return new globalThis[["Active"].concat("Object").join("X")]("Microsoft.XMLHTTP");
-      } catch (e) {}
-    }
-  }
-
-  function pick(obj) {
-    for (var _len = arguments.length, attr = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
-      attr[_key - 1] = arguments[_key];
-    }
-
-    return attr.reduce(function (acc, k) {
-      if (obj.hasOwnProperty(k)) {
-        acc[k] = obj[k];
-      }
-
-      return acc;
-    }, {});
-  } // Keep a reference to the real timeout functions so they can be used when overridden
-
-  var NATIVE_SET_TIMEOUT = setTimeout;
-  var NATIVE_CLEAR_TIMEOUT = clearTimeout;
-  function installTimerFunctions(obj, opts) {
-    if (opts.useNativeTimers) {
-      obj.setTimeoutFn = NATIVE_SET_TIMEOUT.bind(globalThis);
-      obj.clearTimeoutFn = NATIVE_CLEAR_TIMEOUT.bind(globalThis);
-    } else {
-      obj.setTimeoutFn = setTimeout.bind(globalThis);
-      obj.clearTimeoutFn = clearTimeout.bind(globalThis);
-    }
-  }
-
+  function WS(opts) {
+    var _this;
+
+    _classCallCheck(this, WS);
+
+    _this = _super.call(this, opts);
+    _this.supportsBinary = !opts.forceBase64;
+    return _this;
+  }
   /**
-   * Expose `Emitter`.
-   */
-
-  var Emitter_1 = Emitter;
-  /**
-   * Initialize a new `Emitter`.
+   * Transport name.
    *
    * @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;
+
+  _createClass(WS, [{
+    key: "doOpen",
+
+    /**
+     * Opens socket.
+     *
+     * @api private
+     */
+    value: function doOpen() {
+      if (!this.check()) {
+        // let probe timeout
+        return;
+      }
+
+      var uri = this.uri();
+      var protocols = this.opts.protocols; // React Native only supports the 'headers' option, and will print a warning if anything else is passed
+
+      var opts = isReactNative ? {} : pick(this.opts, "agent", "perMessageDeflate", "pfx", "key", "passphrase", "cert", "ca", "ciphers", "rejectUnauthorized", "localAddress", "protocolVersion", "origin", "maxPayload", "family", "checkServerIdentity");
+
+      if (this.opts.extraHeaders) {
+        opts.headers = this.opts.extraHeaders;
+      }
+
+      try {
+        this.ws = usingBrowserWebSocket && !isReactNative ? protocols ? new WebSocket(uri, protocols) : new WebSocket(uri) : new WebSocket(uri, protocols, opts);
+      } catch (err) {
+        return this.emit("error", err);
+      }
+
+      this.ws.binaryType = this.socket.binaryType || defaultBinaryType;
+      this.addEventListeners();
+    }
+    /**
+     * Adds event listeners to the socket
+     *
+     * @api private
+     */
+
+  }, {
+    key: "addEventListeners",
+    value: function addEventListeners() {
+      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
+     */
+
+  }, {
+    key: "write",
+    value: function write(packets) {
+      var self = this;
+      this.writable = false; // encodePacket efficient as it uses WS framing
+      // no need for encodePayload
+
+      var total = packets.length;
+      var i = 0;
+      var l = total;
+
+      for (; i < l; i++) {
+        (function (packet) {
+          parser.encodePacket(packet, self.supportsBinary, function (data) {
+            // always create a new object (GH-437)
+            var opts = {};
+
+            if (!usingBrowserWebSocket) {
+              if (packet.options) {
+                opts.compress = packet.options.compress;
+              }
+
+              if (self.opts.perMessageDeflate) {
+                var len = "string" === typeof data ? Buffer.byteLength(data) : data.length;
+
+                if (len < self.opts.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 (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
+     */
+
+  }, {
+    key: "onClose",
+    value: function onClose() {
+      Transport.prototype.onClose.call(this);
+    }
+    /**
+     * Closes socket.
+     *
+     * @api private
+     */
+
+  }, {
+    key: "doClose",
+    value: function doClose() {
+      if (typeof this.ws !== "undefined") {
+        this.ws.close();
+        this.ws = null;
+      }
+    }
+    /**
+     * Generates uri for connection.
+     *
+     * @api private
+     */
+
+  }, {
+    key: "uri",
+    value: function uri() {
+      var query = this.query || {};
+      var schema = this.opts.secure ? "wss" : "ws";
+      var port = ""; // avoid port if default for schema
+
+      if (this.opts.port && ("wss" === schema && Number(this.opts.port) !== 443 || "ws" === schema && Number(this.opts.port) !== 80)) {
+        port = ":" + this.opts.port;
+      } // append timestamp to URI
+
+
+      if (this.opts.timestampRequests) {
+        query[this.opts.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.opts.hostname.indexOf(":") !== -1;
+      return schema + "://" + (ipv6 ? "[" + this.opts.hostname + "]" : this.opts.hostname) + port + this.opts.path + query;
+    }
+    /**
+     * Feature detection for WebSocket.
+     *
+     * @return {Boolean} whether this transport is available.
+     * @api public
+     */
+
+  }, {
+    key: "check",
+    value: function check() {
+      return !!WebSocket && !("__initialize" in WebSocket && this.name === WS.prototype.name);
+    }
+  }, {
+    key: "name",
+    get: function get() {
+      return "websocket";
+    }
+  }]);
+
+  return WS;
+}(Transport);
+
+module.exports = WS;
+
+/***/ }),
+
+/***/ "./node_modules/engine.io-client/lib/util.js":
+/*!***************************************************!*\
+  !*** ./node_modules/engine.io-client/lib/util.js ***!
+  \***************************************************/
+/*! no static exports found */
+/***/ (function(module, exports) {
+
+module.exports.pick = function (obj) {
+  for (var _len = arguments.length, attr = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
+    attr[_key - 1] = arguments[_key];
+  }
+
+  return attr.reduce(function (acc, k) {
+    if (obj.hasOwnProperty(k)) {
+      acc[k] = obj[k];
+    }
+
+    return acc;
+  }, {});
+};
+
+/***/ }),
+
+/***/ "./node_modules/engine.io-client/lib/xmlhttprequest.js":
+/*!*************************************************************!*\
+  !*** ./node_modules/engine.io-client/lib/xmlhttprequest.js ***!
+  \*************************************************************/
+/*! no static exports found */
+/***/ (function(module, exports, __webpack_require__) {
+
+// browser shim for xmlhttprequest module
+var hasCORS = __webpack_require__(/*! has-cors */ "./node_modules/has-cors/index.js");
+
+var globalThis = __webpack_require__(/*! ./globalThis */ "./node_modules/engine.io-client/lib/globalThis.browser.js");
+
+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) {}
+  }
+};
+
+/***/ }),
+
+/***/ "./node_modules/engine.io-parser/lib/commons.js":
+/*!******************************************************!*\
+  !*** ./node_modules/engine.io-parser/lib/commons.js ***!
+  \******************************************************/
+/*! no static exports found */
+/***/ (function(module, exports) {
+
+var PACKET_TYPES = Object.create(null); // no Map = no polyfill
+
+PACKET_TYPES["open"] = "0";
+PACKET_TYPES["close"] = "1";
+PACKET_TYPES["ping"] = "2";
+PACKET_TYPES["pong"] = "3";
+PACKET_TYPES["message"] = "4";
+PACKET_TYPES["upgrade"] = "5";
+PACKET_TYPES["noop"] = "6";
+var PACKET_TYPES_REVERSE = Object.create(null);
+Object.keys(PACKET_TYPES).forEach(function (key) {
+  PACKET_TYPES_REVERSE[PACKET_TYPES[key]] = key;
+});
+var ERROR_PACKET = {
+  type: "error",
+  data: "parser error"
+};
+module.exports = {
+  PACKET_TYPES: PACKET_TYPES,
+  PACKET_TYPES_REVERSE: PACKET_TYPES_REVERSE,
+  ERROR_PACKET: ERROR_PACKET
+};
+
+/***/ }),
+
+/***/ "./node_modules/engine.io-parser/lib/decodePacket.browser.js":
+/*!*******************************************************************!*\
+  !*** ./node_modules/engine.io-parser/lib/decodePacket.browser.js ***!
+  \*******************************************************************/
+/*! no static exports found */
+/***/ (function(module, exports, __webpack_require__) {
+
+var _require = __webpack_require__(/*! ./commons */ "./node_modules/engine.io-parser/lib/commons.js"),
+    PACKET_TYPES_REVERSE = _require.PACKET_TYPES_REVERSE,
+    ERROR_PACKET = _require.ERROR_PACKET;
+
+var withNativeArrayBuffer = typeof ArrayBuffer === "function";
+var base64decoder;
+
+if (withNativeArrayBuffer) {
+  base64decoder = __webpack_require__(/*! base64-arraybuffer */ "./node_modules/engine.io-parser/node_modules/base64-arraybuffer/lib/base64-arraybuffer.js");
+}
+
+var decodePacket = function decodePacket(encodedPacket, binaryType) {
+  if (typeof encodedPacket !== "string") {
+    return {
+      type: "message",
+      data: mapBinary(encodedPacket, binaryType)
+    };
+  }
+
+  var type = encodedPacket.charAt(0);
+
+  if (type === "b") {
+    return {
+      type: "message",
+      data: decodeBase64Packet(encodedPacket.substring(1), binaryType)
+    };
+  }
+
+  var packetType = PACKET_TYPES_REVERSE[type];
+
+  if (!packetType) {
+    return ERROR_PACKET;
+  }
+
+  return encodedPacket.length > 1 ? {
+    type: PACKET_TYPES_REVERSE[type],
+    data: encodedPacket.substring(1)
+  } : {
+    type: PACKET_TYPES_REVERSE[type]
   };
-  /**
-   * 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;
+};
+
+var decodeBase64Packet = function decodeBase64Packet(data, binaryType) {
+  if (base64decoder) {
+    var decoded = base64decoder.decode(data);
+    return mapBinary(decoded, binaryType);
+  } else {
+    return {
+      base64: true,
+      data: data
+    }; // fallback for old browsers
+  }
+};
+
+var mapBinary = function mapBinary(data, binaryType) {
+  switch (binaryType) {
+    case "blob":
+      return data instanceof ArrayBuffer ? new Blob([data]) : data;
+
+    case "arraybuffer":
+    default:
+      return data;
+    // assuming the data is already an ArrayBuffer
+  }
+};
+
+module.exports = decodePacket;
+
+/***/ }),
+
+/***/ "./node_modules/engine.io-parser/lib/encodePacket.browser.js":
+/*!*******************************************************************!*\
+  !*** ./node_modules/engine.io-parser/lib/encodePacket.browser.js ***!
+  \*******************************************************************/
+/*! no static exports found */
+/***/ (function(module, exports, __webpack_require__) {
+
+var _require = __webpack_require__(/*! ./commons */ "./node_modules/engine.io-parser/lib/commons.js"),
+    PACKET_TYPES = _require.PACKET_TYPES;
+
+var withNativeBlob = typeof Blob === "function" || typeof Blob !== "undefined" && Object.prototype.toString.call(Blob) === "[object BlobConstructor]";
+var withNativeArrayBuffer = typeof ArrayBuffer === "function"; // ArrayBuffer.isView method is not defined in IE10
+
+var isView = function isView(obj) {
+  return typeof ArrayBuffer.isView === "function" ? ArrayBuffer.isView(obj) : obj && obj.buffer instanceof ArrayBuffer;
+};
+
+var encodePacket = function encodePacket(_ref, supportsBinary, callback) {
+  var type = _ref.type,
+      data = _ref.data;
+
+  if (withNativeBlob && data instanceof Blob) {
+    if (supportsBinary) {
+      return callback(data);
+    } else {
+      return encodeBlobAsBase64(data, callback);
+    }
+  } else if (withNativeArrayBuffer && (data instanceof ArrayBuffer || isView(data))) {
+    if (supportsBinary) {
+      return callback(data instanceof ArrayBuffer ? data : data.buffer);
+    } else {
+      return encodeBlobAsBase64(new Blob([data]), callback);
+    }
+  } // plain string
+
+
+  return callback(PACKET_TYPES[type] + (data || ""));
+};
+
+var encodeBlobAsBase64 = function encodeBlobAsBase64(data, callback) {
+  var fileReader = new FileReader();
+
+  fileReader.onload = function () {
+    var content = fileReader.result.split(",")[1];
+    callback("b" + content);
   };
-  /**
-   * 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;
+
+  return fileReader.readAsDataURL(data);
+};
+
+module.exports = encodePacket;
+
+/***/ }),
+
+/***/ "./node_modules/engine.io-parser/lib/index.js":
+/*!****************************************************!*\
+  !*** ./node_modules/engine.io-parser/lib/index.js ***!
+  \****************************************************/
+/*! no static exports found */
+/***/ (function(module, exports, __webpack_require__) {
+
+var encodePacket = __webpack_require__(/*! ./encodePacket */ "./node_modules/engine.io-parser/lib/encodePacket.browser.js");
+
+var decodePacket = __webpack_require__(/*! ./decodePacket */ "./node_modules/engine.io-parser/lib/decodePacket.browser.js");
+
+var SEPARATOR = String.fromCharCode(30); // see https://en.wikipedia.org/wiki/Delimiter#ASCII_delimited_text
+
+var encodePayload = function encodePayload(packets, callback) {
+  // some packets may be added to the array while encoding, so the initial length must be saved
+  var length = packets.length;
+  var encodedPackets = new Array(length);
+  var count = 0;
+  packets.forEach(function (packet, i) {
+    // force base64 encoding for binary packets
+    encodePacket(packet, false, function (encodedPacket) {
+      encodedPackets[i] = encodedPacket;
+
+      if (++count === length) {
+        callback(encodedPackets.join(SEPARATOR));
+      }
+    });
+  });
+};
+
+var decodePayload = function decodePayload(encodedPayload, binaryType) {
+  var encodedPackets = encodedPayload.split(SEPARATOR);
+  var packets = [];
+
+  for (var i = 0; i < encodedPackets.length; i++) {
+    var decodedPacket = decodePacket(encodedPackets[i], binaryType);
+    packets.push(decodedPacket);
+
+    if (decodedPacket.type === "error") {
+      break;
+    }
+  }
+
+  return packets;
+};
+
+module.exports = {
+  protocol: 4,
+  encodePacket: encodePacket,
+  encodePayload: encodePayload,
+  decodePacket: decodePacket,
+  decodePayload: decodePayload
+};
+
+/***/ }),
+
+/***/ "./node_modules/engine.io-parser/node_modules/base64-arraybuffer/lib/base64-arraybuffer.js":
+/*!*************************************************************************************************!*\
+  !*** ./node_modules/engine.io-parser/node_modules/base64-arraybuffer/lib/base64-arraybuffer.js ***!
+  \*************************************************************************************************/
+/*! no static exports found */
+/***/ (function(module, exports) {
+
+/*
+ * base64-arraybuffer
+ * https://github.com/niklasvh/base64-arraybuffer
+ *
+ * Copyright (c) 2012 Niklas von Hertzen
+ * Licensed under the MIT license.
+ */
+(function (chars) {
+  "use strict";
+
+  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;
   };
-  /**
-   * Emit `event` with the given args.
-   *
-   * @param {String} event
-   * @param {Mixed} ...
-   * @return {Emitter}
-   */
-
-
-  Emitter.prototype.emit = function (event) {
-    this._callbacks = this._callbacks || {};
-    var args = new Array(arguments.length - 1),
-        callbacks = this._callbacks['$' + event];
-
-    for (var i = 1; i < arguments.length; i++) {
-      args[i - 1] = arguments[i];
-    }
-
-    if (callbacks) {
-      callbacks = callbacks.slice(0);
-
-      for (var i = 0, len = callbacks.length; i < len; ++i) {
-        callbacks[i].apply(this, args);
-      }
-    }
-
-    return this;
-  }; // alias used for reserved events (protected method)
-
-
-  Emitter.prototype.emitReserved = Emitter.prototype.emit;
-  /**
-   * Return array of callbacks for `event`.
-   *
-   * @param {String} event
-   * @return {Array}
-   * @api public
-   */
-
-  Emitter.prototype.listeners = function (event) {
-    this._callbacks = this._callbacks || {};
-    return this._callbacks['$' + event] || [];
-  };
-  /**
-   * Check if this emitter has `event` handlers.
-   *
-   * @param {String} event
-   * @return {Boolean}
-   * @api public
-   */
-
-
-  Emitter.prototype.hasListeners = function (event) {
-    return !!this.listeners(event).length;
-  };
-
-  var PACKET_TYPES = Object.create(null); // no Map = no polyfill
-
-  PACKET_TYPES["open"] = "0";
-  PACKET_TYPES["close"] = "1";
-  PACKET_TYPES["ping"] = "2";
-  PACKET_TYPES["pong"] = "3";
-  PACKET_TYPES["message"] = "4";
-  PACKET_TYPES["upgrade"] = "5";
-  PACKET_TYPES["noop"] = "6";
-  var PACKET_TYPES_REVERSE = Object.create(null);
-  Object.keys(PACKET_TYPES).forEach(function (key) {
-    PACKET_TYPES_REVERSE[PACKET_TYPES[key]] = key;
-  });
-  var ERROR_PACKET = {
-    type: "error",
-    data: "parser error"
-  };
-
-  var withNativeBlob$1 = typeof Blob === "function" || typeof Blob !== "undefined" && Object.prototype.toString.call(Blob) === "[object BlobConstructor]";
-  var withNativeArrayBuffer$2 = typeof ArrayBuffer === "function"; // ArrayBuffer.isView method is not defined in IE10
-
-  var isView$1 = function isView(obj) {
-    return typeof ArrayBuffer.isView === "function" ? ArrayBuffer.isView(obj) : obj && obj.buffer instanceof ArrayBuffer;
-  };
-
-  var encodePacket = function encodePacket(_ref, supportsBinary, callback) {
-    var type = _ref.type,
-        data = _ref.data;
-
-    if (withNativeBlob$1 && data instanceof Blob) {
-      if (supportsBinary) {
-        return callback(data);
-      } else {
-        return encodeBlobAsBase64(data, callback);
-      }
-    } else if (withNativeArrayBuffer$2 && (data instanceof ArrayBuffer || isView$1(data))) {
-      if (supportsBinary) {
-        return callback(data);
-      } else {
-        return encodeBlobAsBase64(new Blob([data]), callback);
-      }
-    } // plain string
-
-
-    return callback(PACKET_TYPES[type] + (data || ""));
-  };
-
-  var encodeBlobAsBase64 = function encodeBlobAsBase64(data, callback) {
-    var fileReader = new FileReader();
-
-    fileReader.onload = function () {
-      var content = fileReader.result.split(",")[1];
-      callback("b" + content);
-    };
-
-    return fileReader.readAsDataURL(data);
-  };
-
-  /*
-   * base64-arraybuffer 1.0.1 <https://github.com/niklasvh/base64-arraybuffer>
-   * Copyright (c) 2021 Niklas von Hertzen <https://hertzen.com>
-   * Released under MIT License
-   */
-  var chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'; // Use a lookup table to find the index.
-
-  var lookup$1 = typeof Uint8Array === 'undefined' ? [] : new Uint8Array(256);
-
-  for (var i$1 = 0; i$1 < chars.length; i$1++) {
-    lookup$1[chars.charCodeAt(i$1)] = i$1;
-  }
-
-  var decode$1 = function decode(base64) {
+
+  exports.decode = function (base64) {
     var bufferLength = base64.length * 0.75,
         len = base64.length,
@@ -696,8 +4830,8 @@
         encoded4;
 
-    if (base64[base64.length - 1] === '=') {
+    if (base64[base64.length - 1] === "=") {
       bufferLength--;
 
-      if (base64[base64.length - 2] === '=') {
+      if (base64[base64.length - 2] === "=") {
         bufferLength--;
       }
@@ -708,8 +4842,8 @@
 
     for (i = 0; i < len; i += 4) {
-      encoded1 = lookup$1[base64.charCodeAt(i)];
-      encoded2 = lookup$1[base64.charCodeAt(i + 1)];
-      encoded3 = lookup$1[base64.charCodeAt(i + 2)];
-      encoded4 = lookup$1[base64.charCodeAt(i + 3)];
+      encoded1 = chars.indexOf(base64[i]);
+      encoded2 = chars.indexOf(base64[i + 1]);
+      encoded3 = chars.indexOf(base64[i + 2]);
+      encoded4 = chars.indexOf(base64[i + 3]);
       bytes[p++] = encoded1 << 2 | encoded2 >> 4;
       bytes[p++] = (encoded2 & 15) << 4 | encoded3 >> 2;
@@ -719,3522 +4853,1018 @@
     return arraybuffer;
   };
-
-  var withNativeArrayBuffer$1 = typeof ArrayBuffer === "function";
-
-  var decodePacket = function decodePacket(encodedPacket, binaryType) {
-    if (typeof encodedPacket !== "string") {
-      return {
-        type: "message",
-        data: mapBinary(encodedPacket, binaryType)
-      };
-    }
-
-    var type = encodedPacket.charAt(0);
-
-    if (type === "b") {
-      return {
-        type: "message",
-        data: decodeBase64Packet(encodedPacket.substring(1), binaryType)
-      };
-    }
-
-    var packetType = PACKET_TYPES_REVERSE[type];
-
-    if (!packetType) {
-      return ERROR_PACKET;
-    }
-
-    return encodedPacket.length > 1 ? {
-      type: PACKET_TYPES_REVERSE[type],
-      data: encodedPacket.substring(1)
-    } : {
-      type: PACKET_TYPES_REVERSE[type]
+})("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/");
+
+/***/ }),
+
+/***/ "./node_modules/has-cors/index.js":
+/*!****************************************!*\
+  !*** ./node_modules/has-cors/index.js ***!
+  \****************************************/
+/*! no static exports found */
+/***/ (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;
+}
+
+/***/ }),
+
+/***/ "./node_modules/ms/index.js":
+/*!**********************************!*\
+  !*** ./node_modules/ms/index.js ***!
+  \**********************************/
+/*! no static exports found */
+/***/ (function(module, exports) {
+
+function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
+
+/**
+ * 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' : '');
+}
+
+/***/ }),
+
+/***/ "./node_modules/parseqs/index.js":
+/*!***************************************!*\
+  !*** ./node_modules/parseqs/index.js ***!
+  \***************************************/
+/*! no static exports found */
+/***/ (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;
+};
+
+/***/ }),
+
+/***/ "./node_modules/parseuri/index.js":
+/*!****************************************!*\
+  !*** ./node_modules/parseuri/index.js ***!
+  \****************************************/
+/*! no static exports found */
+/***/ (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;
+  }
+
+  uri.pathNames = pathNames(uri, uri['path']);
+  uri.queryKey = queryKey(uri, uri['query']);
+  return uri;
+};
+
+function pathNames(obj, path) {
+  var regx = /\/{2,9}/g,
+      names = path.replace(regx, "/").split("/");
+
+  if (path.substr(0, 1) == '/' || path.length === 0) {
+    names.splice(0, 1);
+  }
+
+  if (path.substr(path.length - 1, 1) == '/') {
+    names.splice(names.length - 1, 1);
+  }
+
+  return names;
+}
+
+function queryKey(uri, query) {
+  var data = {};
+  query.replace(/(?:^|&)([^&=]*)=?([^&]*)/g, function ($0, $1, $2) {
+    if ($1) {
+      data[$1] = $2;
+    }
+  });
+  return data;
+}
+
+/***/ }),
+
+/***/ "./node_modules/socket.io-parser/dist/binary.js":
+/*!******************************************************!*\
+  !*** ./node_modules/socket.io-parser/dist/binary.js ***!
+  \******************************************************/
+/*! no static exports found */
+/***/ (function(module, exports, __webpack_require__) {
+
+"use strict";
+
+
+function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.reconstructPacket = exports.deconstructPacket = void 0;
+
+var is_binary_1 = __webpack_require__(/*! ./is-binary */ "./node_modules/socket.io-parser/dist/is-binary.js");
+/**
+ * Replaces every Buffer | ArrayBuffer | Blob | File in packet with a numbered placeholder.
+ *
+ * @param {Object} packet - socket.io event packet
+ * @return {Object} with deconstructed packet and list of buffers
+ * @public
+ */
+
+
+function deconstructPacket(packet) {
+  var buffers = [];
+  var packetData = packet.data;
+  var pack = packet;
+  pack.data = _deconstructPacket(packetData, buffers);
+  pack.attachments = buffers.length; // number of binary 'attachments'
+
+  return {
+    packet: pack,
+    buffers: buffers
+  };
+}
+
+exports.deconstructPacket = deconstructPacket;
+
+function _deconstructPacket(data, buffers) {
+  if (!data) return data;
+
+  if (is_binary_1.isBinary(data)) {
+    var placeholder = {
+      _placeholder: true,
+      num: buffers.length
     };
-  };
-
-  var decodeBase64Packet = function decodeBase64Packet(data, binaryType) {
-    if (withNativeArrayBuffer$1) {
-      var decoded = decode$1(data);
-      return mapBinary(decoded, binaryType);
-    } else {
-      return {
-        base64: true,
-        data: data
-      }; // fallback for old browsers
-    }
-  };
-
-  var mapBinary = function mapBinary(data, binaryType) {
-    switch (binaryType) {
-      case "blob":
-        return data instanceof ArrayBuffer ? new Blob([data]) : data;
-
-      case "arraybuffer":
-      default:
-        return data;
-      // assuming the data is already an ArrayBuffer
-    }
-  };
-
-  var SEPARATOR = String.fromCharCode(30); // see https://en.wikipedia.org/wiki/Delimiter#ASCII_delimited_text
-
-  var encodePayload = function encodePayload(packets, callback) {
-    // some packets may be added to the array while encoding, so the initial length must be saved
-    var length = packets.length;
-    var encodedPackets = new Array(length);
-    var count = 0;
-    packets.forEach(function (packet, i) {
-      // force base64 encoding for binary packets
-      encodePacket(packet, false, function (encodedPacket) {
-        encodedPackets[i] = encodedPacket;
-
-        if (++count === length) {
-          callback(encodedPackets.join(SEPARATOR));
+    buffers.push(data);
+    return placeholder;
+  } else if (Array.isArray(data)) {
+    var newData = new Array(data.length);
+
+    for (var i = 0; i < data.length; i++) {
+      newData[i] = _deconstructPacket(data[i], buffers);
+    }
+
+    return newData;
+  } else if (_typeof(data) === "object" && !(data instanceof Date)) {
+    var _newData = {};
+
+    for (var key in data) {
+      if (data.hasOwnProperty(key)) {
+        _newData[key] = _deconstructPacket(data[key], buffers);
+      }
+    }
+
+    return _newData;
+  }
+
+  return data;
+}
+/**
+ * Reconstructs a binary packet from its placeholder packet and buffers
+ *
+ * @param {Object} packet - event packet with placeholders
+ * @param {Array} buffers - binary buffers to put in placeholder positions
+ * @return {Object} reconstructed packet
+ * @public
+ */
+
+
+function reconstructPacket(packet, buffers) {
+  packet.data = _reconstructPacket(packet.data, buffers);
+  packet.attachments = undefined; // no longer useful
+
+  return packet;
+}
+
+exports.reconstructPacket = reconstructPacket;
+
+function _reconstructPacket(data, buffers) {
+  if (!data) return data;
+
+  if (data && data._placeholder) {
+    return buffers[data.num]; // appropriate buffer (should be natural order anyway)
+  } else if (Array.isArray(data)) {
+    for (var i = 0; i < data.length; i++) {
+      data[i] = _reconstructPacket(data[i], buffers);
+    }
+  } else if (_typeof(data) === "object") {
+    for (var key in data) {
+      if (data.hasOwnProperty(key)) {
+        data[key] = _reconstructPacket(data[key], buffers);
+      }
+    }
+  }
+
+  return data;
+}
+
+/***/ }),
+
+/***/ "./node_modules/socket.io-parser/dist/index.js":
+/*!*****************************************************!*\
+  !*** ./node_modules/socket.io-parser/dist/index.js ***!
+  \*****************************************************/
+/*! no static exports found */
+/***/ (function(module, exports, __webpack_require__) {
+
+"use strict";
+
+
+function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
+
+function _get(target, property, receiver) { if (typeof Reflect !== "undefined" && Reflect.get) { _get = Reflect.get; } else { _get = function _get(target, property, receiver) { var base = _superPropBase(target, property); if (!base) return; var desc = Object.getOwnPropertyDescriptor(base, property); if (desc.get) { return desc.get.call(receiver); } return desc.value; }; } return _get(target, property, receiver || target); }
+
+function _superPropBase(object, property) { while (!Object.prototype.hasOwnProperty.call(object, property)) { object = _getPrototypeOf(object); if (object === null) break; } return object; }
+
+function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }
+
+function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }
+
+function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }
+
+function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }
+
+function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }
+
+function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Date.prototype.toString.call(Reflect.construct(Date, [], function () {})); return true; } catch (e) { return false; } }
+
+function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }
+
+function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
+
+function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
+
+function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.Decoder = exports.Encoder = exports.PacketType = exports.protocol = void 0;
+
+var Emitter = __webpack_require__(/*! component-emitter */ "./node_modules/component-emitter/index.js");
+
+var binary_1 = __webpack_require__(/*! ./binary */ "./node_modules/socket.io-parser/dist/binary.js");
+
+var is_binary_1 = __webpack_require__(/*! ./is-binary */ "./node_modules/socket.io-parser/dist/is-binary.js");
+
+var debug = __webpack_require__(/*! debug */ "./node_modules/debug/src/browser.js")("socket.io-parser");
+/**
+ * Protocol version.
+ *
+ * @public
+ */
+
+
+exports.protocol = 5;
+var PacketType;
+
+(function (PacketType) {
+  PacketType[PacketType["CONNECT"] = 0] = "CONNECT";
+  PacketType[PacketType["DISCONNECT"] = 1] = "DISCONNECT";
+  PacketType[PacketType["EVENT"] = 2] = "EVENT";
+  PacketType[PacketType["ACK"] = 3] = "ACK";
+  PacketType[PacketType["CONNECT_ERROR"] = 4] = "CONNECT_ERROR";
+  PacketType[PacketType["BINARY_EVENT"] = 5] = "BINARY_EVENT";
+  PacketType[PacketType["BINARY_ACK"] = 6] = "BINARY_ACK";
+})(PacketType = exports.PacketType || (exports.PacketType = {}));
+/**
+ * A socket.io Encoder instance
+ */
+
+
+var Encoder = /*#__PURE__*/function () {
+  function Encoder() {
+    _classCallCheck(this, Encoder);
+  }
+
+  _createClass(Encoder, [{
+    key: "encode",
+
+    /**
+     * Encode a packet as a single string if non-binary, or as a
+     * buffer sequence, depending on packet type.
+     *
+     * @param {Object} obj - packet object
+     */
+    value: function encode(obj) {
+      debug("encoding packet %j", obj);
+
+      if (obj.type === PacketType.EVENT || obj.type === PacketType.ACK) {
+        if (is_binary_1.hasBinary(obj)) {
+          obj.type = obj.type === PacketType.EVENT ? PacketType.BINARY_EVENT : PacketType.BINARY_ACK;
+          return this.encodeAsBinary(obj);
         }
-      });
-    });
-  };
-
-  var decodePayload = function decodePayload(encodedPayload, binaryType) {
-    var encodedPackets = encodedPayload.split(SEPARATOR);
-    var packets = [];
-
-    for (var i = 0; i < encodedPackets.length; i++) {
-      var decodedPacket = decodePacket(encodedPackets[i], binaryType);
-      packets.push(decodedPacket);
-
-      if (decodedPacket.type === "error") {
-        break;
-      }
-    }
-
-    return packets;
-  };
-
-  var protocol$1 = 4;
-
-  var Transport = /*#__PURE__*/function (_Emitter) {
-    _inherits(Transport, _Emitter);
-
-    var _super = _createSuper(Transport);
-
-    /**
-     * Transport abstract constructor.
-     *
-     * @param {Object} options.
-     * @api private
-     */
-    function Transport(opts) {
-      var _this;
-
-      _classCallCheck(this, Transport);
-
-      _this = _super.call(this);
-      _this.writable = false;
-      installTimerFunctions(_assertThisInitialized(_this), opts);
-      _this.opts = opts;
-      _this.query = opts.query;
-      _this.readyState = "";
-      _this.socket = opts.socket;
-      return _this;
-    }
-    /**
-     * Emits an error.
-     *
-     * @param {String} str
-     * @return {Transport} for chaining
-     * @api protected
-     */
-
-
-    _createClass(Transport, [{
-      key: "onError",
-      value: function onError(msg, desc) {
-        var err = new Error(msg); // @ts-ignore
-
-        err.type = "TransportError"; // @ts-ignore
-
-        err.description = desc;
-
-        _get(_getPrototypeOf(Transport.prototype), "emit", this).call(this, "error", err);
-
-        return this;
-      }
-      /**
-       * Opens the transport.
-       *
-       * @api public
-       */
-
-    }, {
-      key: "open",
-      value: function open() {
-        if ("closed" === this.readyState || "" === this.readyState) {
-          this.readyState = "opening";
-          this.doOpen();
-        }
-
-        return this;
-      }
-      /**
-       * Closes the transport.
-       *
-       * @api public
-       */
-
-    }, {
-      key: "close",
-      value: function close() {
-        if ("opening" === this.readyState || "open" === this.readyState) {
-          this.doClose();
-          this.onClose();
-        }
-
-        return this;
-      }
-      /**
-       * Sends multiple packets.
-       *
-       * @param {Array} packets
-       * @api public
-       */
-
-    }, {
-      key: "send",
-      value: function send(packets) {
-        if ("open" === this.readyState) {
-          this.write(packets);
-        }
-      }
-      /**
-       * Called upon open
-       *
-       * @api protected
-       */
-
-    }, {
-      key: "onOpen",
-      value: function onOpen() {
-        this.readyState = "open";
-        this.writable = true;
-
-        _get(_getPrototypeOf(Transport.prototype), "emit", this).call(this, "open");
-      }
-      /**
-       * Called with data.
-       *
-       * @param {String} data
-       * @api protected
-       */
-
-    }, {
-      key: "onData",
-      value: function onData(data) {
-        var packet = decodePacket(data, this.socket.binaryType);
-        this.onPacket(packet);
-      }
-      /**
-       * Called with a decoded packet.
-       *
-       * @api protected
-       */
-
-    }, {
-      key: "onPacket",
-      value: function onPacket(packet) {
-        _get(_getPrototypeOf(Transport.prototype), "emit", this).call(this, "packet", packet);
-      }
-      /**
-       * Called upon close.
-       *
-       * @api protected
-       */
-
-    }, {
-      key: "onClose",
-      value: function onClose() {
-        this.readyState = "closed";
-
-        _get(_getPrototypeOf(Transport.prototype), "emit", this).call(this, "close");
-      }
-    }]);
-
-    return Transport;
-  }(Emitter_1);
-
-  var alphabet = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-_'.split(''),
-      length = 64,
-      map = {},
-      seed = 0,
-      i = 0,
-      prev;
+      }
+
+      return [this.encodeAsString(obj)];
+    }
+    /**
+     * Encode packet as string.
+     */
+
+  }, {
+    key: "encodeAsString",
+    value: function encodeAsString(obj) {
+      // first is type
+      var str = "" + obj.type; // attachments if we have them
+
+      if (obj.type === PacketType.BINARY_EVENT || obj.type === PacketType.BINARY_ACK) {
+        str += obj.attachments + "-";
+      } // if we have a namespace other than `/`
+      // we append it followed by a comma `,`
+
+
+      if (obj.nsp && "/" !== obj.nsp) {
+        str += obj.nsp + ",";
+      } // immediately followed by the id
+
+
+      if (null != obj.id) {
+        str += obj.id;
+      } // json data
+
+
+      if (null != obj.data) {
+        str += JSON.stringify(obj.data);
+      }
+
+      debug("encoded %j as %s", obj, str);
+      return str;
+    }
+    /**
+     * Encode packet as 'buffer sequence' by removing blobs, and
+     * deconstructing packet into object with placeholders and
+     * a list of buffers.
+     */
+
+  }, {
+    key: "encodeAsBinary",
+    value: function encodeAsBinary(obj) {
+      var deconstruction = binary_1.deconstructPacket(obj);
+      var pack = this.encodeAsString(deconstruction.packet);
+      var buffers = deconstruction.buffers;
+      buffers.unshift(pack); // add packet info to beginning of data list
+
+      return buffers; // write all the buffers
+    }
+  }]);
+
+  return Encoder;
+}();
+
+exports.Encoder = Encoder;
+/**
+ * A socket.io Decoder instance
+ *
+ * @return {Object} decoder
+ */
+
+var Decoder = /*#__PURE__*/function (_Emitter) {
+  _inherits(Decoder, _Emitter);
+
+  var _super = _createSuper(Decoder);
+
+  function Decoder() {
+    _classCallCheck(this, Decoder);
+
+    return _super.call(this);
+  }
   /**
-   * Return a string representing the specified number.
+   * Decodes an encoded packet string into packet JSON.
    *
-   * @param {Number} num The number to convert.
-   * @returns {String} The string representation of the number.
-   * @api public
+   * @param {String} obj - encoded packet
    */
 
-  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;
-  var yeast_1 = yeast;
-
-  var parseqs = {};
-
-  /**
-   * Compiles a querystring
-   * Returns string representation of the object
-   *
-   * @param {Object}
-   * @api private
-   */
-
-  parseqs.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
-   */
-
-
-  parseqs.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;
-  };
-
-  var Polling = /*#__PURE__*/function (_Transport) {
-    _inherits(Polling, _Transport);
-
-    var _super = _createSuper(Polling);
-
-    function Polling() {
-      var _this;
-
-      _classCallCheck(this, Polling);
-
-      _this = _super.apply(this, arguments);
-      _this.polling = false;
-      return _this;
-    }
-    /**
-     * Transport name.
-     */
-
-
-    _createClass(Polling, [{
-      key: "name",
-      get: function get() {
-        return "polling";
-      }
-      /**
-       * Opens the socket (triggers polling). We write a PING message to determine
-       * when the transport is open.
-       *
-       * @api private
-       */
-
-    }, {
-      key: "doOpen",
-      value: function doOpen() {
-        this.poll();
-      }
-      /**
-       * Pauses polling.
-       *
-       * @param {Function} callback upon buffers are flushed and transport is paused
-       * @api private
-       */
-
-    }, {
-      key: "pause",
-      value: function pause(onPause) {
-        var _this2 = this;
-
-        this.readyState = "pausing";
-
-        var pause = function pause() {
-          _this2.readyState = "paused";
-          onPause();
-        };
-
-        if (this.polling || !this.writable) {
-          var total = 0;
-
-          if (this.polling) {
-            total++;
-            this.once("pollComplete", function () {
-              --total || pause();
-            });
-          }
-
-          if (!this.writable) {
-            total++;
-            this.once("drain", function () {
-              --total || pause();
-            });
+
+  _createClass(Decoder, [{
+    key: "add",
+    value: function add(obj) {
+      var packet;
+
+      if (typeof obj === "string") {
+        packet = this.decodeString(obj);
+
+        if (packet.type === PacketType.BINARY_EVENT || packet.type === PacketType.BINARY_ACK) {
+          // binary packet's json
+          this.reconstructor = new BinaryReconstructor(packet); // no attachments, labeled binary but no binary data to follow
+
+          if (packet.attachments === 0) {
+            _get(_getPrototypeOf(Decoder.prototype), "emit", this).call(this, "decoded", packet);
           }
         } else {
-          pause();
+          // non-binary full packet
+          _get(_getPrototypeOf(Decoder.prototype), "emit", this).call(this, "decoded", packet);
         }
-      }
-      /**
-       * Starts polling cycle.
-       *
-       * @api public
-       */
-
-    }, {
-      key: "poll",
-      value: function poll() {
-        this.polling = true;
-        this.doPoll();
-        this.emit("poll");
-      }
-      /**
-       * Overloads onData to detect payloads.
-       *
-       * @api private
-       */
-
-    }, {
-      key: "onData",
-      value: function onData(data) {
-        var _this3 = this;
-
-        var callback = function callback(packet) {
-          // if its the first message we consider the transport open
-          if ("opening" === _this3.readyState && packet.type === "open") {
-            _this3.onOpen();
-          } // if its a close packet, we close the ongoing requests
-
-
-          if ("close" === packet.type) {
-            _this3.onClose();
-
-            return false;
-          } // otherwise bypass onData and handle the message
-
-
-          _this3.onPacket(packet);
-        }; // decode payload
-
-
-        decodePayload(data, this.socket.binaryType).forEach(callback); // if an event did not trigger closing
-
-        if ("closed" !== this.readyState) {
-          // if we got data we're not polling
-          this.polling = false;
-          this.emit("pollComplete");
-
-          if ("open" === this.readyState) {
-            this.poll();
+      } else if (is_binary_1.isBinary(obj) || obj.base64) {
+        // raw binary data
+        if (!this.reconstructor) {
+          throw new Error("got binary data when not reconstructing a packet");
+        } else {
+          packet = this.reconstructor.takeBinaryData(obj);
+
+          if (packet) {
+            // received final buffer
+            this.reconstructor = null;
+
+            _get(_getPrototypeOf(Decoder.prototype), "emit", this).call(this, "decoded", packet);
           }
         }
-      }
-      /**
-       * For polling, send a close packet.
-       *
-       * @api private
-       */
-
-    }, {
-      key: "doClose",
-      value: function doClose() {
-        var _this4 = this;
-
-        var close = function close() {
-          _this4.write([{
-            type: "close"
-          }]);
-        };
-
-        if ("open" === this.readyState) {
-          close();
+      } else {
+        throw new Error("Unknown type: " + obj);
+      }
+    }
+    /**
+     * Decode a packet String (JSON data)
+     *
+     * @param {String} str
+     * @return {Object} packet
+     */
+
+  }, {
+    key: "decodeString",
+    value: function decodeString(str) {
+      var i = 0; // look up type
+
+      var p = {
+        type: Number(str.charAt(0))
+      };
+
+      if (PacketType[p.type] === undefined) {
+        throw new Error("unknown packet type " + p.type);
+      } // look up attachments if type binary
+
+
+      if (p.type === PacketType.BINARY_EVENT || p.type === PacketType.BINARY_ACK) {
+        var start = i + 1;
+
+        while (str.charAt(++i) !== "-" && i != str.length) {}
+
+        var buf = str.substring(start, i);
+
+        if (buf != Number(buf) || str.charAt(i) !== "-") {
+          throw new Error("Illegal attachments");
+        }
+
+        p.attachments = Number(buf);
+      } // look up namespace (if any)
+
+
+      if ("/" === str.charAt(i + 1)) {
+        var _start = i + 1;
+
+        while (++i) {
+          var c = str.charAt(i);
+          if ("," === c) break;
+          if (i === str.length) break;
+        }
+
+        p.nsp = str.substring(_start, i);
+      } else {
+        p.nsp = "/";
+      } // look up id
+
+
+      var next = str.charAt(i + 1);
+
+      if ("" !== next && Number(next) == next) {
+        var _start2 = i + 1;
+
+        while (++i) {
+          var _c = str.charAt(i);
+
+          if (null == _c || Number(_c) != _c) {
+            --i;
+            break;
+          }
+
+          if (i === str.length) break;
+        }
+
+        p.id = Number(str.substring(_start2, i + 1));
+      } // look up json data
+
+
+      if (str.charAt(++i)) {
+        var payload = tryParse(str.substr(i));
+
+        if (Decoder.isPayloadValid(p.type, payload)) {
+          p.data = payload;
         } else {
-          // in case we're trying to close while
-          // handshaking is in progress (GH-164)
-          this.once("open", close);
+          throw new Error("invalid payload");
         }
       }
-      /**
-       * Writes a packets payload.
-       *
-       * @param {Array} data packets
-       * @param {Function} drain callback
-       * @api private
-       */
-
-    }, {
-      key: "write",
-      value: function write(packets) {
-        var _this5 = this;
-
-        this.writable = false;
-        encodePayload(packets, function (data) {
-          _this5.doWrite(data, function () {
-            _this5.writable = true;
-
-            _this5.emit("drain");
-          });
-        });
-      }
-      /**
-       * Generates uri for connection.
-       *
-       * @api private
-       */
-
-    }, {
-      key: "uri",
-      value: function uri() {
-        var query = this.query || {};
-        var schema = this.opts.secure ? "https" : "http";
-        var port = ""; // cache busting is forced
-
-        if (false !== this.opts.timestampRequests) {
-          query[this.opts.timestampParam] = yeast_1();
-        }
-
-        if (!this.supportsBinary && !query.sid) {
-          query.b64 = 1;
-        } // avoid port if default for schema
-
-
-        if (this.opts.port && ("https" === schema && Number(this.opts.port) !== 443 || "http" === schema && Number(this.opts.port) !== 80)) {
-          port = ":" + this.opts.port;
-        }
-
-        var encodedQuery = parseqs.encode(query);
-        var ipv6 = this.opts.hostname.indexOf(":") !== -1;
-        return schema + "://" + (ipv6 ? "[" + this.opts.hostname + "]" : this.opts.hostname) + port + this.opts.path + (encodedQuery.length ? "?" + encodedQuery : "");
-      }
-    }]);
-
-    return Polling;
-  }(Transport);
-
+
+      debug("decoded %s as %j", str, p);
+      return p;
+    }
+  }, {
+    key: "destroy",
+
+    /**
+     * Deallocates a parser's resources
+     */
+    value: function destroy() {
+      if (this.reconstructor) {
+        this.reconstructor.finishedReconstruction();
+      }
+    }
+  }], [{
+    key: "isPayloadValid",
+    value: function isPayloadValid(type, payload) {
+      switch (type) {
+        case PacketType.CONNECT:
+          return _typeof(payload) === "object";
+
+        case PacketType.DISCONNECT:
+          return payload === undefined;
+
+        case PacketType.CONNECT_ERROR:
+          return typeof payload === "string" || _typeof(payload) === "object";
+
+        case PacketType.EVENT:
+        case PacketType.BINARY_EVENT:
+          return Array.isArray(payload) && payload.length > 0;
+
+        case PacketType.ACK:
+        case PacketType.BINARY_ACK:
+          return Array.isArray(payload);
+      }
+    }
+  }]);
+
+  return Decoder;
+}(Emitter);
+
+exports.Decoder = Decoder;
+
+function tryParse(str) {
+  try {
+    return JSON.parse(str);
+  } catch (e) {
+    return false;
+  }
+}
+/**
+ * A manager of a binary event's 'buffer sequence'. Should
+ * be constructed whenever a packet of type BINARY_EVENT is
+ * decoded.
+ *
+ * @param {Object} packet
+ * @return {BinaryReconstructor} initialized reconstructor
+ */
+
+
+var BinaryReconstructor = /*#__PURE__*/function () {
+  function BinaryReconstructor(packet) {
+    _classCallCheck(this, BinaryReconstructor);
+
+    this.packet = packet;
+    this.buffers = [];
+    this.reconPack = packet;
+  }
   /**
-   * Empty function
+   * Method to be called when binary data received from connection
+   * after a BINARY_EVENT packet.
+   *
+   * @param {Buffer | ArrayBuffer} binData - the raw binary data received
+   * @return {null | Object} returns null if more binary data is expected or
+   *   a reconstructed packet object if all buffers have been received.
    */
 
-  function empty() {}
-
-  var hasXHR2 = function () {
-    var xhr = new XMLHttpRequest$1({
-      xdomain: false
-    });
-    return null != xhr.responseType;
-  }();
-
-  var XHR = /*#__PURE__*/function (_Polling) {
-    _inherits(XHR, _Polling);
-
-    var _super = _createSuper(XHR);
-
-    /**
-     * XHR Polling constructor.
-     *
-     * @param {Object} opts
-     * @api public
-     */
-    function XHR(opts) {
-      var _this;
-
-      _classCallCheck(this, XHR);
-
-      _this = _super.call(this, opts);
-
-      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;
-      }
-      /**
-       * XHR supports binary
-       */
-
-
-      var forceBase64 = opts && opts.forceBase64;
-      _this.supportsBinary = hasXHR2 && !forceBase64;
-      return _this;
-    }
-    /**
-     * Creates a request.
-     *
-     * @param {String} method
-     * @api private
-     */
-
-
-    _createClass(XHR, [{
-      key: "request",
-      value: function request() {
-        var opts = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
-
-        _extends(opts, {
-          xd: this.xd,
-          xs: this.xs
-        }, this.opts);
-
-        return new Request(this.uri(), opts);
-      }
-      /**
-       * Sends data.
-       *
-       * @param {String} data to send.
-       * @param {Function} called upon flush.
-       * @api private
-       */
-
-    }, {
-      key: "doWrite",
-      value: function doWrite(data, fn) {
-        var _this2 = this;
-
-        var req = this.request({
-          method: "POST",
-          data: data
-        });
-        req.on("success", fn);
-        req.on("error", function (err) {
-          _this2.onError("xhr post error", err);
-        });
-      }
-      /**
-       * Starts a poll cycle.
-       *
-       * @api private
-       */
-
-    }, {
-      key: "doPoll",
-      value: function doPoll() {
-        var _this3 = this;
-
-        var req = this.request();
-        req.on("data", this.onData.bind(this));
-        req.on("error", function (err) {
-          _this3.onError("xhr poll error", err);
-        });
-        this.pollXhr = req;
-      }
-    }]);
-
-    return XHR;
-  }(Polling);
-  var Request = /*#__PURE__*/function (_Emitter) {
-    _inherits(Request, _Emitter);
-
-    var _super2 = _createSuper(Request);
-
-    /**
-     * Request constructor
-     *
-     * @param {Object} options
-     * @api public
-     */
-    function Request(uri, opts) {
-      var _this4;
-
-      _classCallCheck(this, Request);
-
-      _this4 = _super2.call(this);
-      installTimerFunctions(_assertThisInitialized(_this4), opts);
-      _this4.opts = opts;
-      _this4.method = opts.method || "GET";
-      _this4.uri = uri;
-      _this4.async = false !== opts.async;
-      _this4.data = undefined !== opts.data ? opts.data : null;
-
-      _this4.create();
-
-      return _this4;
-    }
-    /**
-     * Creates the XHR object and sends the request.
-     *
-     * @api private
-     */
-
-
-    _createClass(Request, [{
-      key: "create",
-      value: function create() {
-        var _this5 = this;
-
-        var opts = pick(this.opts, "agent", "pfx", "key", "passphrase", "cert", "ca", "ciphers", "rejectUnauthorized", "autoUnref");
-        opts.xdomain = !!this.opts.xd;
-        opts.xscheme = !!this.opts.xs;
-        var xhr = this.xhr = new XMLHttpRequest$1(opts);
-
-        try {
-          xhr.open(this.method, this.uri, this.async);
-
-          try {
-            if (this.opts.extraHeaders) {
-              xhr.setDisableHeaderCheck && xhr.setDisableHeaderCheck(true);
-
-              for (var i in this.opts.extraHeaders) {
-                if (this.opts.extraHeaders.hasOwnProperty(i)) {
-                  xhr.setRequestHeader(i, this.opts.extraHeaders[i]);
-                }
-              }
-            }
-          } catch (e) {}
-
-          if ("POST" === this.method) {
-            try {
-              xhr.setRequestHeader("Content-type", "text/plain;charset=UTF-8");
-            } catch (e) {}
-          }
-
-          try {
-            xhr.setRequestHeader("Accept", "*/*");
-          } catch (e) {} // ie6 check
-
-
-          if ("withCredentials" in xhr) {
-            xhr.withCredentials = this.opts.withCredentials;
-          }
-
-          if (this.opts.requestTimeout) {
-            xhr.timeout = this.opts.requestTimeout;
-          }
-
-          xhr.onreadystatechange = function () {
-            if (4 !== xhr.readyState) return;
-
-            if (200 === xhr.status || 1223 === xhr.status) {
-              _this5.onLoad();
-            } else {
-              // make sure the `error` event handler that's user-set
-              // does not throw in the same tick and gets caught here
-              _this5.setTimeoutFn(function () {
-                _this5.onError(typeof xhr.status === "number" ? xhr.status : 0);
-              }, 0);
-            }
-          };
-
-          xhr.send(this.data);
-        } catch (e) {
-          // Need to defer since .create() is called directly from the constructor
-          // and thus the 'error' event can only be only bound *after* this exception
-          // occurs.  Therefore, also, we cannot throw here at all.
-          this.setTimeoutFn(function () {
-            _this5.onError(e);
-          }, 0);
-          return;
-        }
-
-        if (typeof document !== "undefined") {
-          this.index = Request.requestsCount++;
-          Request.requests[this.index] = this;
-        }
-      }
-      /**
-       * Called upon successful response.
-       *
-       * @api private
-       */
-
-    }, {
-      key: "onSuccess",
-      value: function onSuccess() {
-        this.emit("success");
-        this.cleanup();
-      }
-      /**
-       * Called if we have data.
-       *
-       * @api private
-       */
-
-    }, {
-      key: "onData",
-      value: function onData(data) {
-        this.emit("data", data);
-        this.onSuccess();
-      }
-      /**
-       * Called upon error.
-       *
-       * @api private
-       */
-
-    }, {
-      key: "onError",
-      value: function onError(err) {
-        this.emit("error", err);
-        this.cleanup(true);
-      }
-      /**
-       * Cleans up house.
-       *
-       * @api private
-       */
-
-    }, {
-      key: "cleanup",
-      value: function cleanup(fromError) {
-        if ("undefined" === typeof this.xhr || null === this.xhr) {
-          return;
-        }
-
-        this.xhr.onreadystatechange = empty;
-
-        if (fromError) {
-          try {
-            this.xhr.abort();
-          } catch (e) {}
-        }
-
-        if (typeof document !== "undefined") {
-          delete Request.requests[this.index];
-        }
-
-        this.xhr = null;
-      }
-      /**
-       * Called upon load.
-       *
-       * @api private
-       */
-
-    }, {
-      key: "onLoad",
-      value: function onLoad() {
-        var data = this.xhr.responseText;
-
-        if (data !== null) {
-          this.onData(data);
-        }
-      }
-      /**
-       * Aborts the request.
-       *
-       * @api public
-       */
-
-    }, {
-      key: "abort",
-      value: function abort() {
-        this.cleanup();
-      }
-    }]);
-
-    return Request;
-  }(Emitter_1);
-  Request.requestsCount = 0;
-  Request.requests = {};
-  /**
-   * Aborts pending requests when unloading the window. This is needed to prevent
-   * memory leaks (e.g. when using IE) and to ensure that no spurious error is
-   * emitted.
-   */
-
-  if (typeof document !== "undefined") {
-    // @ts-ignore
-    if (typeof attachEvent === "function") {
-      // @ts-ignore
-      attachEvent("onunload", unloadHandler);
-    } else if (typeof addEventListener === "function") {
-      var terminationEvent = "onpagehide" in globalThis ? "pagehide" : "unload";
-      addEventListener(terminationEvent, unloadHandler, false);
-    }
-  }
-
-  function unloadHandler() {
-    for (var i in Request.requests) {
-      if (Request.requests.hasOwnProperty(i)) {
-        Request.requests[i].abort();
-      }
-    }
-  }
-
-  var nextTick = function () {
-    var isPromiseAvailable = typeof Promise === "function" && typeof Promise.resolve === "function";
-
-    if (isPromiseAvailable) {
-      return function (cb) {
-        return Promise.resolve().then(cb);
-      };
-    } else {
-      return function (cb, setTimeoutFn) {
-        return setTimeoutFn(cb, 0);
-      };
-    }
-  }();
-  var WebSocket = globalThis.WebSocket || globalThis.MozWebSocket;
-  var usingBrowserWebSocket = true;
-  var defaultBinaryType = "arraybuffer";
-
-  var isReactNative = typeof navigator !== "undefined" && typeof navigator.product === "string" && navigator.product.toLowerCase() === "reactnative";
-  var WS = /*#__PURE__*/function (_Transport) {
-    _inherits(WS, _Transport);
-
-    var _super = _createSuper(WS);
-
-    /**
-     * WebSocket transport constructor.
-     *
-     * @api {Object} connection options
-     * @api public
-     */
-    function WS(opts) {
-      var _this;
-
-      _classCallCheck(this, WS);
-
-      _this = _super.call(this, opts);
-      _this.supportsBinary = !opts.forceBase64;
-      return _this;
-    }
-    /**
-     * Transport name.
-     *
-     * @api public
-     */
-
-
-    _createClass(WS, [{
-      key: "name",
-      get: function get() {
-        return "websocket";
-      }
-      /**
-       * Opens socket.
-       *
-       * @api private
-       */
-
-    }, {
-      key: "doOpen",
-      value: function doOpen() {
-        if (!this.check()) {
-          // let probe timeout
-          return;
-        }
-
-        var uri = this.uri();
-        var protocols = this.opts.protocols; // React Native only supports the 'headers' option, and will print a warning if anything else is passed
-
-        var opts = isReactNative ? {} : pick(this.opts, "agent", "perMessageDeflate", "pfx", "key", "passphrase", "cert", "ca", "ciphers", "rejectUnauthorized", "localAddress", "protocolVersion", "origin", "maxPayload", "family", "checkServerIdentity");
-
-        if (this.opts.extraHeaders) {
-          opts.headers = this.opts.extraHeaders;
-        }
-
-        try {
-          this.ws = usingBrowserWebSocket && !isReactNative ? protocols ? new WebSocket(uri, protocols) : new WebSocket(uri) : new WebSocket(uri, protocols, opts);
-        } catch (err) {
-          return this.emit("error", err);
-        }
-
-        this.ws.binaryType = this.socket.binaryType || defaultBinaryType;
-        this.addEventListeners();
-      }
-      /**
-       * Adds event listeners to the socket
-       *
-       * @api private
-       */
-
-    }, {
-      key: "addEventListeners",
-      value: function addEventListeners() {
-        var _this2 = this;
-
-        this.ws.onopen = function () {
-          if (_this2.opts.autoUnref) {
-            _this2.ws._socket.unref();
-          }
-
-          _this2.onOpen();
-        };
-
-        this.ws.onclose = this.onClose.bind(this);
-
-        this.ws.onmessage = function (ev) {
-          return _this2.onData(ev.data);
-        };
-
-        this.ws.onerror = function (e) {
-          return _this2.onError("websocket error", e);
-        };
-      }
-      /**
-       * Writes data to socket.
-       *
-       * @param {Array} array of packets.
-       * @api private
-       */
-
-    }, {
-      key: "write",
-      value: function write(packets) {
-        var _this3 = this;
-
-        this.writable = false; // encodePacket efficient as it uses WS framing
-        // no need for encodePayload
-
-        var _loop = function _loop(i) {
-          var packet = packets[i];
-          var lastPacket = i === packets.length - 1;
-          encodePacket(packet, _this3.supportsBinary, function (data) {
-            // always create a new object (GH-437)
-            var opts = {};
-            // have a chance of informing us about it yet, in that case send will
-            // throw an error
-
-
-            try {
-              if (usingBrowserWebSocket) {
-                // TypeError is thrown when passing the second argument on Safari
-                _this3.ws.send(data);
-              }
-            } catch (e) {}
-
-            if (lastPacket) {
-              // fake drain
-              // defer to next tick to allow Socket to clear writeBuffer
-              nextTick(function () {
-                _this3.writable = true;
-
-                _this3.emit("drain");
-              }, _this3.setTimeoutFn);
-            }
-          });
-        };
-
-        for (var i = 0; i < packets.length; i++) {
-          _loop(i);
-        }
-      }
-      /**
-       * Closes socket.
-       *
-       * @api private
-       */
-
-    }, {
-      key: "doClose",
-      value: function doClose() {
-        if (typeof this.ws !== "undefined") {
-          this.ws.close();
-          this.ws = null;
-        }
-      }
-      /**
-       * Generates uri for connection.
-       *
-       * @api private
-       */
-
-    }, {
-      key: "uri",
-      value: function uri() {
-        var query = this.query || {};
-        var schema = this.opts.secure ? "wss" : "ws";
-        var port = ""; // avoid port if default for schema
-
-        if (this.opts.port && ("wss" === schema && Number(this.opts.port) !== 443 || "ws" === schema && Number(this.opts.port) !== 80)) {
-          port = ":" + this.opts.port;
-        } // append timestamp to URI
-
-
-        if (this.opts.timestampRequests) {
-          query[this.opts.timestampParam] = yeast_1();
-        } // communicate binary support capabilities
-
-
-        if (!this.supportsBinary) {
-          query.b64 = 1;
-        }
-
-        var encodedQuery = parseqs.encode(query);
-        var ipv6 = this.opts.hostname.indexOf(":") !== -1;
-        return schema + "://" + (ipv6 ? "[" + this.opts.hostname + "]" : this.opts.hostname) + port + this.opts.path + (encodedQuery.length ? "?" + encodedQuery : "");
-      }
-      /**
-       * Feature detection for WebSocket.
-       *
-       * @return {Boolean} whether this transport is available.
-       * @api public
-       */
-
-    }, {
-      key: "check",
-      value: function check() {
-        return !!WebSocket && !("__initialize" in WebSocket && this.name === WS.prototype.name);
-      }
-    }]);
-
-    return WS;
-  }(Transport);
-
-  var transports = {
-    websocket: WS,
-    polling: XHR
-  };
-
-  var Socket$1 = /*#__PURE__*/function (_Emitter) {
-    _inherits(Socket, _Emitter);
-
-    var _super = _createSuper(Socket);
-
-    /**
-     * Socket constructor.
-     *
-     * @param {String|Object} uri or options
-     * @param {Object} opts - options
-     * @api public
-     */
-    function Socket(uri) {
-      var _this;
-
-      var opts = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
-
-      _classCallCheck(this, Socket);
-
-      _this = _super.call(this);
-
-      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;
-      }
-
-      installTimerFunctions(_assertThisInitialized(_this), opts);
-      _this.secure = null != opts.secure ? opts.secure : typeof location !== "undefined" && "https:" === location.protocol;
-
-      if (opts.hostname && !opts.port) {
-        // if no port is specified manually, use the protocol default
-        opts.port = _this.secure ? "443" : "80";
-      }
-
-      _this.hostname = opts.hostname || (typeof location !== "undefined" ? location.hostname : "localhost");
-      _this.port = opts.port || (typeof location !== "undefined" && location.port ? location.port : _this.secure ? "443" : "80");
-      _this.transports = opts.transports || ["polling", "websocket"];
-      _this.readyState = "";
-      _this.writeBuffer = [];
-      _this.prevBufferLen = 0;
-      _this.opts = _extends({
-        path: "/engine.io",
-        agent: false,
-        withCredentials: false,
-        upgrade: true,
-        timestampParam: "t",
-        rememberUpgrade: false,
-        rejectUnauthorized: true,
-        perMessageDeflate: {
-          threshold: 1024
-        },
-        transportOptions: {},
-        closeOnBeforeunload: true
-      }, opts);
-      _this.opts.path = _this.opts.path.replace(/\/$/, "") + "/";
-
-      if (typeof _this.opts.query === "string") {
-        _this.opts.query = parseqs.decode(_this.opts.query);
-      } // set on handshake
-
-
-      _this.id = null;
-      _this.upgrades = null;
-      _this.pingInterval = null;
-      _this.pingTimeout = null; // set on heartbeat
-
-      _this.pingTimeoutTimer = null;
-
-      if (typeof addEventListener === "function") {
-        if (_this.opts.closeOnBeforeunload) {
-          // Firefox closes the connection when the "beforeunload" event is emitted but not Chrome. This event listener
-          // ensures every browser behaves the same (no "disconnect" event at the Socket.IO level when the page is
-          // closed/reloaded)
-          addEventListener("beforeunload", function () {
-            if (_this.transport) {
-              // silently close the transport
-              _this.transport.removeAllListeners();
-
-              _this.transport.close();
-            }
-          }, false);
-        }
-
-        if (_this.hostname !== "localhost") {
-          _this.offlineEventListener = function () {
-            _this.onClose("transport close");
-          };
-
-          addEventListener("offline", _this.offlineEventListener, false);
-        }
-      }
-
-      _this.open();
-
-      return _this;
-    }
-    /**
-     * Creates transport of the given type.
-     *
-     * @param {String} transport name
-     * @return {Transport}
-     * @api private
-     */
-
-
-    _createClass(Socket, [{
-      key: "createTransport",
-      value: function createTransport(name) {
-        var query = clone(this.opts.query); // append engine.io protocol identifier
-
-        query.EIO = protocol$1; // transport name
-
-        query.transport = name; // session id if we already have one
-
-        if (this.id) query.sid = this.id;
-
-        var opts = _extends({}, this.opts.transportOptions[name], this.opts, {
-          query: query,
-          socket: this,
-          hostname: this.hostname,
-          secure: this.secure,
-          port: this.port
-        });
-
-        return new transports[name](opts);
-      }
-      /**
-       * Initializes transport to use and starts probe.
-       *
-       * @api private
-       */
-
-    }, {
-      key: "open",
-      value: function open() {
-        var _this2 = this;
-
-        var transport;
-
-        if (this.opts.rememberUpgrade && Socket.priorWebsocketSuccess && this.transports.indexOf("websocket") !== -1) {
-          transport = "websocket";
-        } else if (0 === this.transports.length) {
-          // Emit error on next tick so it can be listened to
-          this.setTimeoutFn(function () {
-            _this2.emitReserved("error", "No transports available");
-          }, 0);
-          return;
-        } else {
-          transport = this.transports[0];
-        }
-
-        this.readyState = "opening"; // Retry with the next transport if the transport is disabled (jsonp: false)
-
-        try {
-          transport = this.createTransport(transport);
-        } catch (e) {
-          this.transports.shift();
-          this.open();
-          return;
-        }
-
-        transport.open();
-        this.setTransport(transport);
-      }
-      /**
-       * Sets the current transport. Disables the existing one (if any).
-       *
-       * @api private
-       */
-
-    }, {
-      key: "setTransport",
-      value: function setTransport(transport) {
-        var _this3 = this;
-
-        if (this.transport) {
-          this.transport.removeAllListeners();
-        } // set up transport
-
-
-        this.transport = transport; // set up transport listeners
-
-        transport.on("drain", this.onDrain.bind(this)).on("packet", this.onPacket.bind(this)).on("error", this.onError.bind(this)).on("close", function () {
-          _this3.onClose("transport close");
-        });
-      }
-      /**
-       * Probes a transport.
-       *
-       * @param {String} transport name
-       * @api private
-       */
-
-    }, {
-      key: "probe",
-      value: function probe(name) {
-        var _this4 = this;
-
-        var transport = this.createTransport(name);
-        var failed = false;
-        Socket.priorWebsocketSuccess = false;
-
-        var onTransportOpen = function onTransportOpen() {
-          if (failed) return;
-          transport.send([{
-            type: "ping",
-            data: "probe"
-          }]);
-          transport.once("packet", function (msg) {
-            if (failed) return;
-
-            if ("pong" === msg.type && "probe" === msg.data) {
-              _this4.upgrading = true;
-
-              _this4.emitReserved("upgrading", transport);
-
-              if (!transport) return;
-              Socket.priorWebsocketSuccess = "websocket" === transport.name;
-
-              _this4.transport.pause(function () {
-                if (failed) return;
-                if ("closed" === _this4.readyState) return;
-                cleanup();
-
-                _this4.setTransport(transport);
-
-                transport.send([{
-                  type: "upgrade"
-                }]);
-
-                _this4.emitReserved("upgrade", transport);
-
-                transport = null;
-                _this4.upgrading = false;
-
-                _this4.flush();
-              });
-            } else {
-              var err = new Error("probe error"); // @ts-ignore
-
-              err.transport = transport.name;
-
-              _this4.emitReserved("upgradeError", err);
-            }
-          });
-        };
-
-        function freezeTransport() {
-          if (failed) return; // Any callback called by transport should be ignored since now
-
-          failed = true;
-          cleanup();
-          transport.close();
-          transport = null;
-        } // Handle any error that happens while probing
-
-
-        var onerror = function onerror(err) {
-          var error = new Error("probe error: " + err); // @ts-ignore
-
-          error.transport = transport.name;
-          freezeTransport();
-
-          _this4.emitReserved("upgradeError", error);
-        };
-
-        function onTransportClose() {
-          onerror("transport closed");
-        } // When the socket is closed while we're probing
-
-
-        function onclose() {
-          onerror("socket closed");
-        } // When the socket is upgraded while we're probing
-
-
-        function onupgrade(to) {
-          if (transport && to.name !== transport.name) {
-            freezeTransport();
-          }
-        } // Remove all listeners on the transport and on self
-
-
-        var cleanup = function cleanup() {
-          transport.removeListener("open", onTransportOpen);
-          transport.removeListener("error", onerror);
-          transport.removeListener("close", onTransportClose);
-
-          _this4.off("close", onclose);
-
-          _this4.off("upgrading", onupgrade);
-        };
-
-        transport.once("open", onTransportOpen);
-        transport.once("error", onerror);
-        transport.once("close", onTransportClose);
-        this.once("close", onclose);
-        this.once("upgrading", onupgrade);
-        transport.open();
-      }
-      /**
-       * Called when connection is deemed open.
-       *
-       * @api private
-       */
-
-    }, {
-      key: "onOpen",
-      value: function onOpen() {
-        this.readyState = "open";
-        Socket.priorWebsocketSuccess = "websocket" === this.transport.name;
-        this.emitReserved("open");
-        this.flush(); // we check for `readyState` in case an `open`
-        // listener already closed the socket
-
-        if ("open" === this.readyState && this.opts.upgrade && this.transport.pause) {
-          var i = 0;
-          var l = this.upgrades.length;
-
-          for (; i < l; i++) {
-            this.probe(this.upgrades[i]);
-          }
-        }
-      }
-      /**
-       * Handles a packet.
-       *
-       * @api private
-       */
-
-    }, {
-      key: "onPacket",
-      value: function onPacket(packet) {
-        if ("opening" === this.readyState || "open" === this.readyState || "closing" === this.readyState) {
-          this.emitReserved("packet", packet); // Socket is live - any packet counts
-
-          this.emitReserved("heartbeat");
-
-          switch (packet.type) {
-            case "open":
-              this.onHandshake(JSON.parse(packet.data));
-              break;
-
-            case "ping":
-              this.resetPingTimeout();
-              this.sendPacket("pong");
-              this.emitReserved("ping");
-              this.emitReserved("pong");
-              break;
-
-            case "error":
-              var err = new Error("server error"); // @ts-ignore
-
-              err.code = packet.data;
-              this.onError(err);
-              break;
-
-            case "message":
-              this.emitReserved("data", packet.data);
-              this.emitReserved("message", packet.data);
-              break;
-          }
-        }
-      }
-      /**
-       * Called upon handshake completion.
-       *
-       * @param {Object} data - handshake obj
-       * @api private
-       */
-
-    }, {
-      key: "onHandshake",
-      value: function onHandshake(data) {
-        this.emitReserved("handshake", data);
-        this.id = data.sid;
-        this.transport.query.sid = data.sid;
-        this.upgrades = this.filterUpgrades(data.upgrades);
-        this.pingInterval = data.pingInterval;
-        this.pingTimeout = data.pingTimeout;
-        this.onOpen(); // In case open handler closes socket
-
-        if ("closed" === this.readyState) return;
-        this.resetPingTimeout();
-      }
-      /**
-       * Sets and resets ping timeout timer based on server pings.
-       *
-       * @api private
-       */
-
-    }, {
-      key: "resetPingTimeout",
-      value: function resetPingTimeout() {
-        var _this5 = this;
-
-        this.clearTimeoutFn(this.pingTimeoutTimer);
-        this.pingTimeoutTimer = this.setTimeoutFn(function () {
-          _this5.onClose("ping timeout");
-        }, this.pingInterval + this.pingTimeout);
-
-        if (this.opts.autoUnref) {
-          this.pingTimeoutTimer.unref();
-        }
-      }
-      /**
-       * Called on `drain` event
-       *
-       * @api private
-       */
-
-    }, {
-      key: "onDrain",
-      value: function onDrain() {
-        this.writeBuffer.splice(0, this.prevBufferLen); // setting prevBufferLen = 0 is very important
-        // for example, when upgrading, upgrade packet is sent over,
-        // and a nonzero prevBufferLen could cause problems on `drain`
-
-        this.prevBufferLen = 0;
-
-        if (0 === this.writeBuffer.length) {
-          this.emitReserved("drain");
-        } else {
-          this.flush();
-        }
-      }
-      /**
-       * Flush write buffers.
-       *
-       * @api private
-       */
-
-    }, {
-      key: "flush",
-      value: function flush() {
-        if ("closed" !== this.readyState && this.transport.writable && !this.upgrading && 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.emitReserved("flush");
-        }
-      }
-      /**
-       * Sends a message.
-       *
-       * @param {String} message.
-       * @param {Function} callback function.
-       * @param {Object} options.
-       * @return {Socket} for chaining.
-       * @api public
-       */
-
-    }, {
-      key: "write",
-      value: function write(msg, options, fn) {
-        this.sendPacket("message", msg, options, fn);
-        return this;
-      }
-    }, {
-      key: "send",
-      value: function send(msg, options, fn) {
-        this.sendPacket("message", msg, options, fn);
-        return this;
-      }
-      /**
-       * Sends a packet.
-       *
-       * @param {String} packet type.
-       * @param {String} data.
-       * @param {Object} options.
-       * @param {Function} callback function.
-       * @api private
-       */
-
-    }, {
-      key: "sendPacket",
-      value: function sendPacket(type, data, options, fn) {
-        if ("function" === typeof data) {
-          fn = data;
-          data = undefined;
-        }
-
-        if ("function" === typeof options) {
-          fn = options;
-          options = null;
-        }
-
-        if ("closing" === this.readyState || "closed" === this.readyState) {
-          return;
-        }
-
-        options = options || {};
-        options.compress = false !== options.compress;
-        var packet = {
-          type: type,
-          data: data,
-          options: options
-        };
-        this.emitReserved("packetCreate", packet);
-        this.writeBuffer.push(packet);
-        if (fn) this.once("flush", fn);
-        this.flush();
-      }
-      /**
-       * Closes the connection.
-       *
-       * @api public
-       */
-
-    }, {
-      key: "close",
-      value: function close() {
-        var _this6 = this;
-
-        var close = function close() {
-          _this6.onClose("forced close");
-
-          _this6.transport.close();
-        };
-
-        var cleanupAndClose = function cleanupAndClose() {
-          _this6.off("upgrade", cleanupAndClose);
-
-          _this6.off("upgradeError", cleanupAndClose);
-
-          close();
-        };
-
-        var waitForUpgrade = function waitForUpgrade() {
-          // wait for upgrade to finish since we can't send packets while pausing a transport
-          _this6.once("upgrade", cleanupAndClose);
-
-          _this6.once("upgradeError", cleanupAndClose);
-        };
-
-        if ("opening" === this.readyState || "open" === this.readyState) {
-          this.readyState = "closing";
-
-          if (this.writeBuffer.length) {
-            this.once("drain", function () {
-              if (_this6.upgrading) {
-                waitForUpgrade();
-              } else {
-                close();
-              }
-            });
-          } else if (this.upgrading) {
-            waitForUpgrade();
-          } else {
-            close();
-          }
-        }
-
-        return this;
-      }
-      /**
-       * Called upon transport error
-       *
-       * @api private
-       */
-
-    }, {
-      key: "onError",
-      value: function onError(err) {
-        Socket.priorWebsocketSuccess = false;
-        this.emitReserved("error", err);
-        this.onClose("transport error", err);
-      }
-      /**
-       * Called upon transport close.
-       *
-       * @api private
-       */
-
-    }, {
-      key: "onClose",
-      value: function onClose(reason, desc) {
-        if ("opening" === this.readyState || "open" === this.readyState || "closing" === this.readyState) {
-          // clear timers
-          this.clearTimeoutFn(this.pingTimeoutTimer); // stop event from firing again for transport
-
-          this.transport.removeAllListeners("close"); // ensure transport won't stay open
-
-          this.transport.close(); // ignore further transport communication
-
-          this.transport.removeAllListeners();
-
-          if (typeof removeEventListener === "function") {
-            removeEventListener("offline", this.offlineEventListener, false);
-          } // set ready state
-
-
-          this.readyState = "closed"; // clear session id
-
-          this.id = null; // emit close event
-
-          this.emitReserved("close", reason, desc); // clean buffers after, so users can still
-          // grab the buffers on `close` event
-
-          this.writeBuffer = [];
-          this.prevBufferLen = 0;
-        }
-      }
-      /**
-       * Filters upgrades, returning only those matching client transports.
-       *
-       * @param {Array} server upgrades
-       * @api private
-       *
-       */
-
-    }, {
-      key: "filterUpgrades",
-      value: function filterUpgrades(upgrades) {
-        var filteredUpgrades = [];
-        var i = 0;
-        var j = upgrades.length;
-
-        for (; i < j; i++) {
-          if (~this.transports.indexOf(upgrades[i])) filteredUpgrades.push(upgrades[i]);
-        }
-
-        return filteredUpgrades;
-      }
-    }]);
-
-    return Socket;
-  }(Emitter_1);
-  Socket$1.protocol = protocol$1;
-
-  function clone(obj) {
-    var o = {};
-
-    for (var i in obj) {
-      if (obj.hasOwnProperty(i)) {
-        o[i] = obj[i];
-      }
-    }
-
-    return o;
-  }
-
-  var withNativeArrayBuffer = typeof ArrayBuffer === "function";
-
-  var isView = function isView(obj) {
-    return typeof ArrayBuffer.isView === "function" ? ArrayBuffer.isView(obj) : obj.buffer instanceof ArrayBuffer;
-  };
-
-  var toString = Object.prototype.toString;
-  var withNativeBlob = typeof Blob === "function" || typeof Blob !== "undefined" && toString.call(Blob) === "[object BlobConstructor]";
-  var withNativeFile = typeof File === "function" || typeof File !== "undefined" && toString.call(File) === "[object FileConstructor]";
-  /**
-   * Returns true if obj is a Buffer, an ArrayBuffer, a Blob or a File.
-   *
-   * @private
-   */
-
-  function isBinary(obj) {
-    return withNativeArrayBuffer && (obj instanceof ArrayBuffer || isView(obj)) || withNativeBlob && obj instanceof Blob || withNativeFile && obj instanceof File;
-  }
-  function hasBinary(obj, toJSON) {
-    if (!obj || _typeof(obj) !== "object") {
-      return false;
-    }
-
-    if (Array.isArray(obj)) {
-      for (var i = 0, l = obj.length; i < l; i++) {
-        if (hasBinary(obj[i])) {
-          return true;
-        }
-      }
-
-      return false;
-    }
-
-    if (isBinary(obj)) {
+
+  _createClass(BinaryReconstructor, [{
+    key: "takeBinaryData",
+    value: function takeBinaryData(binData) {
+      this.buffers.push(binData);
+
+      if (this.buffers.length === this.reconPack.attachments) {
+        // done with buffer list
+        var packet = binary_1.reconstructPacket(this.reconPack, this.buffers);
+        this.finishedReconstruction();
+        return packet;
+      }
+
+      return null;
+    }
+    /**
+     * Cleans up binary packet reconstruction variables.
+     */
+
+  }, {
+    key: "finishedReconstruction",
+    value: function finishedReconstruction() {
+      this.reconPack = null;
+      this.buffers = [];
+    }
+  }]);
+
+  return BinaryReconstructor;
+}();
+
+/***/ }),
+
+/***/ "./node_modules/socket.io-parser/dist/is-binary.js":
+/*!*********************************************************!*\
+  !*** ./node_modules/socket.io-parser/dist/is-binary.js ***!
+  \*********************************************************/
+/*! no static exports found */
+/***/ (function(module, exports, __webpack_require__) {
+
+"use strict";
+
+
+function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.hasBinary = exports.isBinary = void 0;
+var withNativeArrayBuffer = typeof ArrayBuffer === "function";
+
+var isView = function isView(obj) {
+  return typeof ArrayBuffer.isView === "function" ? ArrayBuffer.isView(obj) : obj.buffer instanceof ArrayBuffer;
+};
+
+var toString = Object.prototype.toString;
+var withNativeBlob = typeof Blob === "function" || typeof Blob !== "undefined" && toString.call(Blob) === "[object BlobConstructor]";
+var withNativeFile = typeof File === "function" || typeof File !== "undefined" && toString.call(File) === "[object FileConstructor]";
+/**
+ * Returns true if obj is a Buffer, an ArrayBuffer, a Blob or a File.
+ *
+ * @private
+ */
+
+function isBinary(obj) {
+  return withNativeArrayBuffer && (obj instanceof ArrayBuffer || isView(obj)) || withNativeBlob && obj instanceof Blob || withNativeFile && obj instanceof File;
+}
+
+exports.isBinary = isBinary;
+
+function hasBinary(obj, toJSON) {
+  if (!obj || _typeof(obj) !== "object") {
+    return false;
+  }
+
+  if (Array.isArray(obj)) {
+    for (var i = 0, l = obj.length; i < l; i++) {
+      if (hasBinary(obj[i])) {
+        return true;
+      }
+    }
+
+    return false;
+  }
+
+  if (isBinary(obj)) {
+    return true;
+  }
+
+  if (obj.toJSON && typeof obj.toJSON === "function" && arguments.length === 1) {
+    return hasBinary(obj.toJSON(), true);
+  }
+
+  for (var key in obj) {
+    if (Object.prototype.hasOwnProperty.call(obj, key) && hasBinary(obj[key])) {
       return true;
     }
-
-    if (obj.toJSON && typeof obj.toJSON === "function" && arguments.length === 1) {
-      return hasBinary(obj.toJSON(), true);
-    }
-
-    for (var key in obj) {
-      if (Object.prototype.hasOwnProperty.call(obj, key) && hasBinary(obj[key])) {
-        return true;
-      }
-    }
-
-    return false;
-  }
-
-  /**
-   * Replaces every Buffer | ArrayBuffer | Blob | File in packet with a numbered placeholder.
-   *
-   * @param {Object} packet - socket.io event packet
-   * @return {Object} with deconstructed packet and list of buffers
-   * @public
-   */
-
-  function deconstructPacket(packet) {
-    var buffers = [];
-    var packetData = packet.data;
-    var pack = packet;
-    pack.data = _deconstructPacket(packetData, buffers);
-    pack.attachments = buffers.length; // number of binary 'attachments'
-
-    return {
-      packet: pack,
-      buffers: buffers
-    };
-  }
-
-  function _deconstructPacket(data, buffers) {
-    if (!data) return data;
-
-    if (isBinary(data)) {
-      var placeholder = {
-        _placeholder: true,
-        num: buffers.length
-      };
-      buffers.push(data);
-      return placeholder;
-    } else if (Array.isArray(data)) {
-      var newData = new Array(data.length);
-
-      for (var i = 0; i < data.length; i++) {
-        newData[i] = _deconstructPacket(data[i], buffers);
-      }
-
-      return newData;
-    } else if (_typeof(data) === "object" && !(data instanceof Date)) {
-      var _newData = {};
-
-      for (var key in data) {
-        if (data.hasOwnProperty(key)) {
-          _newData[key] = _deconstructPacket(data[key], buffers);
-        }
-      }
-
-      return _newData;
-    }
-
-    return data;
-  }
-  /**
-   * Reconstructs a binary packet from its placeholder packet and buffers
-   *
-   * @param {Object} packet - event packet with placeholders
-   * @param {Array} buffers - binary buffers to put in placeholder positions
-   * @return {Object} reconstructed packet
-   * @public
-   */
-
-
-  function reconstructPacket(packet, buffers) {
-    packet.data = _reconstructPacket(packet.data, buffers);
-    packet.attachments = undefined; // no longer useful
-
-    return packet;
-  }
-
-  function _reconstructPacket(data, buffers) {
-    if (!data) return data;
-
-    if (data && data._placeholder) {
-      return buffers[data.num]; // appropriate buffer (should be natural order anyway)
-    } else if (Array.isArray(data)) {
-      for (var i = 0; i < data.length; i++) {
-        data[i] = _reconstructPacket(data[i], buffers);
-      }
-    } else if (_typeof(data) === "object") {
-      for (var key in data) {
-        if (data.hasOwnProperty(key)) {
-          data[key] = _reconstructPacket(data[key], buffers);
-        }
-      }
-    }
-
-    return data;
-  }
-
-  /**
-   * Protocol version.
-   *
-   * @public
-   */
-
-  var protocol = 5;
-  var PacketType;
-
-  (function (PacketType) {
-    PacketType[PacketType["CONNECT"] = 0] = "CONNECT";
-    PacketType[PacketType["DISCONNECT"] = 1] = "DISCONNECT";
-    PacketType[PacketType["EVENT"] = 2] = "EVENT";
-    PacketType[PacketType["ACK"] = 3] = "ACK";
-    PacketType[PacketType["CONNECT_ERROR"] = 4] = "CONNECT_ERROR";
-    PacketType[PacketType["BINARY_EVENT"] = 5] = "BINARY_EVENT";
-    PacketType[PacketType["BINARY_ACK"] = 6] = "BINARY_ACK";
-  })(PacketType || (PacketType = {}));
-  /**
-   * A socket.io Encoder instance
-   */
-
-
-  var Encoder = /*#__PURE__*/function () {
-    function Encoder() {
-      _classCallCheck(this, Encoder);
-    }
-
-    _createClass(Encoder, [{
-      key: "encode",
-      value:
-      /**
-       * Encode a packet as a single string if non-binary, or as a
-       * buffer sequence, depending on packet type.
-       *
-       * @param {Object} obj - packet object
-       */
-      function encode(obj) {
-        if (obj.type === PacketType.EVENT || obj.type === PacketType.ACK) {
-          if (hasBinary(obj)) {
-            obj.type = obj.type === PacketType.EVENT ? PacketType.BINARY_EVENT : PacketType.BINARY_ACK;
-            return this.encodeAsBinary(obj);
-          }
-        }
-
-        return [this.encodeAsString(obj)];
-      }
-      /**
-       * Encode packet as string.
-       */
-
-    }, {
-      key: "encodeAsString",
-      value: function encodeAsString(obj) {
-        // first is type
-        var str = "" + obj.type; // attachments if we have them
-
-        if (obj.type === PacketType.BINARY_EVENT || obj.type === PacketType.BINARY_ACK) {
-          str += obj.attachments + "-";
-        } // if we have a namespace other than `/`
-        // we append it followed by a comma `,`
-
-
-        if (obj.nsp && "/" !== obj.nsp) {
-          str += obj.nsp + ",";
-        } // immediately followed by the id
-
-
-        if (null != obj.id) {
-          str += obj.id;
-        } // json data
-
-
-        if (null != obj.data) {
-          str += JSON.stringify(obj.data);
-        }
-
-        return str;
-      }
-      /**
-       * Encode packet as 'buffer sequence' by removing blobs, and
-       * deconstructing packet into object with placeholders and
-       * a list of buffers.
-       */
-
-    }, {
-      key: "encodeAsBinary",
-      value: function encodeAsBinary(obj) {
-        var deconstruction = deconstructPacket(obj);
-        var pack = this.encodeAsString(deconstruction.packet);
-        var buffers = deconstruction.buffers;
-        buffers.unshift(pack); // add packet info to beginning of data list
-
-        return buffers; // write all the buffers
-      }
-    }]);
-
-    return Encoder;
-  }();
-  /**
-   * A socket.io Decoder instance
-   *
-   * @return {Object} decoder
-   */
-
-  var Decoder = /*#__PURE__*/function (_Emitter) {
-    _inherits(Decoder, _Emitter);
-
-    var _super = _createSuper(Decoder);
-
-    function Decoder() {
-      _classCallCheck(this, Decoder);
-
-      return _super.call(this);
-    }
-    /**
-     * Decodes an encoded packet string into packet JSON.
-     *
-     * @param {String} obj - encoded packet
-     */
-
-
-    _createClass(Decoder, [{
-      key: "add",
-      value: function add(obj) {
-        var packet;
-
-        if (typeof obj === "string") {
-          packet = this.decodeString(obj);
-
-          if (packet.type === PacketType.BINARY_EVENT || packet.type === PacketType.BINARY_ACK) {
-            // binary packet's json
-            this.reconstructor = new BinaryReconstructor(packet); // no attachments, labeled binary but no binary data to follow
-
-            if (packet.attachments === 0) {
-              _get(_getPrototypeOf(Decoder.prototype), "emitReserved", this).call(this, "decoded", packet);
-            }
-          } else {
-            // non-binary full packet
-            _get(_getPrototypeOf(Decoder.prototype), "emitReserved", this).call(this, "decoded", packet);
-          }
-        } else if (isBinary(obj) || obj.base64) {
-          // raw binary data
-          if (!this.reconstructor) {
-            throw new Error("got binary data when not reconstructing a packet");
-          } else {
-            packet = this.reconstructor.takeBinaryData(obj);
-
-            if (packet) {
-              // received final buffer
-              this.reconstructor = null;
-
-              _get(_getPrototypeOf(Decoder.prototype), "emitReserved", this).call(this, "decoded", packet);
-            }
-          }
-        } else {
-          throw new Error("Unknown type: " + obj);
-        }
-      }
-      /**
-       * Decode a packet String (JSON data)
-       *
-       * @param {String} str
-       * @return {Object} packet
-       */
-
-    }, {
-      key: "decodeString",
-      value: function decodeString(str) {
-        var i = 0; // look up type
-
-        var p = {
-          type: Number(str.charAt(0))
-        };
-
-        if (PacketType[p.type] === undefined) {
-          throw new Error("unknown packet type " + p.type);
-        } // look up attachments if type binary
-
-
-        if (p.type === PacketType.BINARY_EVENT || p.type === PacketType.BINARY_ACK) {
-          var start = i + 1;
-
-          while (str.charAt(++i) !== "-" && i != str.length) {}
-
-          var buf = str.substring(start, i);
-
-          if (buf != Number(buf) || str.charAt(i) !== "-") {
-            throw new Error("Illegal attachments");
-          }
-
-          p.attachments = Number(buf);
-        } // look up namespace (if any)
-
-
-        if ("/" === str.charAt(i + 1)) {
-          var _start = i + 1;
-
-          while (++i) {
-            var c = str.charAt(i);
-            if ("," === c) break;
-            if (i === str.length) break;
-          }
-
-          p.nsp = str.substring(_start, i);
-        } else {
-          p.nsp = "/";
-        } // look up id
-
-
-        var next = str.charAt(i + 1);
-
-        if ("" !== next && Number(next) == next) {
-          var _start2 = i + 1;
-
-          while (++i) {
-            var _c = str.charAt(i);
-
-            if (null == _c || Number(_c) != _c) {
-              --i;
-              break;
-            }
-
-            if (i === str.length) break;
-          }
-
-          p.id = Number(str.substring(_start2, i + 1));
-        } // look up json data
-
-
-        if (str.charAt(++i)) {
-          var payload = tryParse(str.substr(i));
-
-          if (Decoder.isPayloadValid(p.type, payload)) {
-            p.data = payload;
-          } else {
-            throw new Error("invalid payload");
-          }
-        }
-
-        return p;
-      }
-    }, {
-      key: "destroy",
-      value:
-      /**
-       * Deallocates a parser's resources
-       */
-      function destroy() {
-        if (this.reconstructor) {
-          this.reconstructor.finishedReconstruction();
-        }
-      }
-    }], [{
-      key: "isPayloadValid",
-      value: function isPayloadValid(type, payload) {
-        switch (type) {
-          case PacketType.CONNECT:
-            return _typeof(payload) === "object";
-
-          case PacketType.DISCONNECT:
-            return payload === undefined;
-
-          case PacketType.CONNECT_ERROR:
-            return typeof payload === "string" || _typeof(payload) === "object";
-
-          case PacketType.EVENT:
-          case PacketType.BINARY_EVENT:
-            return Array.isArray(payload) && payload.length > 0;
-
-          case PacketType.ACK:
-          case PacketType.BINARY_ACK:
-            return Array.isArray(payload);
-        }
-      }
-    }]);
-
-    return Decoder;
-  }(Emitter_1);
-
-  function tryParse(str) {
-    try {
-      return JSON.parse(str);
-    } catch (e) {
-      return false;
-    }
-  }
-  /**
-   * A manager of a binary event's 'buffer sequence'. Should
-   * be constructed whenever a packet of type BINARY_EVENT is
-   * decoded.
-   *
-   * @param {Object} packet
-   * @return {BinaryReconstructor} initialized reconstructor
-   */
-
-
-  var BinaryReconstructor = /*#__PURE__*/function () {
-    function BinaryReconstructor(packet) {
-      _classCallCheck(this, BinaryReconstructor);
-
-      this.packet = packet;
-      this.buffers = [];
-      this.reconPack = packet;
-    }
-    /**
-     * Method to be called when binary data received from connection
-     * after a BINARY_EVENT packet.
-     *
-     * @param {Buffer | ArrayBuffer} binData - the raw binary data received
-     * @return {null | Object} returns null if more binary data is expected or
-     *   a reconstructed packet object if all buffers have been received.
-     */
-
-
-    _createClass(BinaryReconstructor, [{
-      key: "takeBinaryData",
-      value: function takeBinaryData(binData) {
-        this.buffers.push(binData);
-
-        if (this.buffers.length === this.reconPack.attachments) {
-          // done with buffer list
-          var packet = reconstructPacket(this.reconPack, this.buffers);
-          this.finishedReconstruction();
-          return packet;
-        }
-
-        return null;
-      }
-      /**
-       * Cleans up binary packet reconstruction variables.
-       */
-
-    }, {
-      key: "finishedReconstruction",
-      value: function finishedReconstruction() {
-        this.reconPack = null;
-        this.buffers = [];
-      }
-    }]);
-
-    return BinaryReconstructor;
-  }();
-
-  var parser = /*#__PURE__*/Object.freeze({
-    __proto__: null,
-    protocol: protocol,
-    get PacketType () { return PacketType; },
-    Encoder: Encoder,
-    Decoder: Decoder
-  });
-
-  function on(obj, ev, fn) {
-    obj.on(ev, fn);
-    return function subDestroy() {
-      obj.off(ev, fn);
-    };
-  }
-
-  /**
-   * Internal events.
-   * These events can't be emitted by the user.
-   */
-
-  var RESERVED_EVENTS = Object.freeze({
-    connect: 1,
-    connect_error: 1,
-    disconnect: 1,
-    disconnecting: 1,
-    // EventEmitter reserved events: https://nodejs.org/api/events.html#events_event_newlistener
-    newListener: 1,
-    removeListener: 1
-  });
-  var Socket = /*#__PURE__*/function (_Emitter) {
-    _inherits(Socket, _Emitter);
-
-    var _super = _createSuper(Socket);
-
-    /**
-     * `Socket` constructor.
-     *
-     * @public
-     */
-    function Socket(io, nsp, opts) {
-      var _this;
-
-      _classCallCheck(this, Socket);
-
-      _this = _super.call(this);
-      _this.connected = false;
-      _this.disconnected = true;
-      _this.receiveBuffer = [];
-      _this.sendBuffer = [];
-      _this.ids = 0;
-      _this.acks = {};
-      _this.flags = {};
-      _this.io = io;
-      _this.nsp = nsp;
-
-      if (opts && opts.auth) {
-        _this.auth = opts.auth;
-      }
-
-      if (_this.io._autoConnect) _this.open();
-      return _this;
-    }
-    /**
-     * Subscribe to open, close and packet events
-     *
-     * @private
-     */
-
-
-    _createClass(Socket, [{
-      key: "subEvents",
-      value: function subEvents() {
-        if (this.subs) return;
-        var io = this.io;
-        this.subs = [on(io, "open", this.onopen.bind(this)), on(io, "packet", this.onpacket.bind(this)), on(io, "error", this.onerror.bind(this)), on(io, "close", this.onclose.bind(this))];
-      }
-      /**
-       * Whether the Socket will try to reconnect when its Manager connects or reconnects
-       */
-
-    }, {
-      key: "active",
-      get: function get() {
-        return !!this.subs;
-      }
-      /**
-       * "Opens" the socket.
-       *
-       * @public
-       */
-
-    }, {
-      key: "connect",
-      value: function connect() {
-        if (this.connected) return this;
-        this.subEvents();
-        if (!this.io["_reconnecting"]) this.io.open(); // ensure open
-
-        if ("open" === this.io._readyState) this.onopen();
-        return this;
-      }
-      /**
-       * Alias for connect()
-       */
-
-    }, {
-      key: "open",
-      value: function open() {
-        return this.connect();
-      }
-      /**
-       * Sends a `message` event.
-       *
-       * @return self
-       * @public
-       */
-
-    }, {
-      key: "send",
-      value: function send() {
-        for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
-          args[_key] = arguments[_key];
-        }
-
-        args.unshift("message");
-        this.emit.apply(this, args);
-        return this;
-      }
-      /**
-       * Override `emit`.
-       * If the event is in `events`, it's emitted normally.
-       *
-       * @return self
-       * @public
-       */
-
-    }, {
-      key: "emit",
-      value: function emit(ev) {
-        if (RESERVED_EVENTS.hasOwnProperty(ev)) {
-          throw new Error('"' + ev + '" is a reserved event name');
-        }
-
-        for (var _len2 = arguments.length, args = new Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
-          args[_key2 - 1] = arguments[_key2];
-        }
-
-        args.unshift(ev);
-        var packet = {
-          type: PacketType.EVENT,
-          data: args
-        };
-        packet.options = {};
-        packet.options.compress = this.flags.compress !== false; // event ack callback
-
-        if ("function" === typeof args[args.length - 1]) {
-          var id = this.ids++;
-          var ack = args.pop();
-
-          this._registerAckCallback(id, ack);
-
-          packet.id = id;
-        }
-
-        var isTransportWritable = this.io.engine && this.io.engine.transport && this.io.engine.transport.writable;
-        var discardPacket = this.flags["volatile"] && (!isTransportWritable || !this.connected);
-
-        if (discardPacket) ; else if (this.connected) {
-          this.packet(packet);
-        } else {
-          this.sendBuffer.push(packet);
-        }
-
-        this.flags = {};
-        return this;
-      }
-      /**
-       * @private
-       */
-
-    }, {
-      key: "_registerAckCallback",
-      value: function _registerAckCallback(id, ack) {
-        var _this2 = this;
-
-        var timeout = this.flags.timeout;
-
-        if (timeout === undefined) {
-          this.acks[id] = ack;
-          return;
-        } // @ts-ignore
-
-
-        var timer = this.io.setTimeoutFn(function () {
-          delete _this2.acks[id];
-
-          for (var i = 0; i < _this2.sendBuffer.length; i++) {
-            if (_this2.sendBuffer[i].id === id) {
-              _this2.sendBuffer.splice(i, 1);
-            }
-          }
-
-          ack.call(_this2, new Error("operation has timed out"));
-        }, timeout);
-
-        this.acks[id] = function () {
-          // @ts-ignore
-          _this2.io.clearTimeoutFn(timer);
-
-          for (var _len3 = arguments.length, args = new Array(_len3), _key3 = 0; _key3 < _len3; _key3++) {
-            args[_key3] = arguments[_key3];
-          }
-
-          ack.apply(_this2, [null].concat(args));
-        };
-      }
-      /**
-       * Sends a packet.
-       *
-       * @param packet
-       * @private
-       */
-
-    }, {
-      key: "packet",
-      value: function packet(_packet) {
-        _packet.nsp = this.nsp;
-
-        this.io._packet(_packet);
-      }
-      /**
-       * Called upon engine `open`.
-       *
-       * @private
-       */
-
-    }, {
-      key: "onopen",
-      value: function onopen() {
-        var _this3 = this;
-
-        if (typeof this.auth == "function") {
-          this.auth(function (data) {
-            _this3.packet({
-              type: PacketType.CONNECT,
-              data: data
-            });
-          });
-        } else {
-          this.packet({
-            type: PacketType.CONNECT,
-            data: this.auth
-          });
-        }
-      }
-      /**
-       * Called upon engine or manager `error`.
-       *
-       * @param err
-       * @private
-       */
-
-    }, {
-      key: "onerror",
-      value: function onerror(err) {
-        if (!this.connected) {
-          this.emitReserved("connect_error", err);
-        }
-      }
-      /**
-       * Called upon engine `close`.
-       *
-       * @param reason
-       * @private
-       */
-
-    }, {
-      key: "onclose",
-      value: function onclose(reason) {
-        this.connected = false;
-        this.disconnected = true;
-        delete this.id;
-        this.emitReserved("disconnect", reason);
-      }
-      /**
-       * Called with socket packet.
-       *
-       * @param packet
-       * @private
-       */
-
-    }, {
-      key: "onpacket",
-      value: function onpacket(packet) {
-        var sameNamespace = packet.nsp === this.nsp;
-        if (!sameNamespace) return;
-
-        switch (packet.type) {
-          case PacketType.CONNECT:
-            if (packet.data && packet.data.sid) {
-              var id = packet.data.sid;
-              this.onconnect(id);
-            } else {
-              this.emitReserved("connect_error", new Error("It seems you are trying to reach a Socket.IO server in v2.x with a v3.x client, but they are not compatible (more information here: https://socket.io/docs/v3/migrating-from-2-x-to-3-0/)"));
-            }
-
-            break;
-
-          case PacketType.EVENT:
-            this.onevent(packet);
-            break;
-
-          case PacketType.BINARY_EVENT:
-            this.onevent(packet);
-            break;
-
-          case PacketType.ACK:
-            this.onack(packet);
-            break;
-
-          case PacketType.BINARY_ACK:
-            this.onack(packet);
-            break;
-
-          case PacketType.DISCONNECT:
-            this.ondisconnect();
-            break;
-
-          case PacketType.CONNECT_ERROR:
-            this.destroy();
-            var err = new Error(packet.data.message); // @ts-ignore
-
-            err.data = packet.data.data;
-            this.emitReserved("connect_error", err);
-            break;
-        }
-      }
-      /**
-       * Called upon a server event.
-       *
-       * @param packet
-       * @private
-       */
-
-    }, {
-      key: "onevent",
-      value: function onevent(packet) {
-        var args = packet.data || [];
-
-        if (null != packet.id) {
-          args.push(this.ack(packet.id));
-        }
-
-        if (this.connected) {
-          this.emitEvent(args);
-        } else {
-          this.receiveBuffer.push(Object.freeze(args));
-        }
-      }
-    }, {
-      key: "emitEvent",
-      value: function emitEvent(args) {
-        if (this._anyListeners && this._anyListeners.length) {
-          var listeners = this._anyListeners.slice();
-
-          var _iterator = _createForOfIteratorHelper(listeners),
-              _step;
-
-          try {
-            for (_iterator.s(); !(_step = _iterator.n()).done;) {
-              var listener = _step.value;
-              listener.apply(this, args);
-            }
-          } catch (err) {
-            _iterator.e(err);
-          } finally {
-            _iterator.f();
-          }
-        }
-
-        _get(_getPrototypeOf(Socket.prototype), "emit", this).apply(this, args);
-      }
-      /**
-       * Produces an ack callback to emit with an event.
-       *
-       * @private
-       */
-
-    }, {
-      key: "ack",
-      value: function ack(id) {
-        var self = this;
-        var sent = false;
-        return function () {
-          // prevent double callbacks
-          if (sent) return;
-          sent = true;
-
-          for (var _len4 = arguments.length, args = new Array(_len4), _key4 = 0; _key4 < _len4; _key4++) {
-            args[_key4] = arguments[_key4];
-          }
-
-          self.packet({
-            type: PacketType.ACK,
-            id: id,
-            data: args
-          });
-        };
-      }
-      /**
-       * Called upon a server acknowlegement.
-       *
-       * @param packet
-       * @private
-       */
-
-    }, {
-      key: "onack",
-      value: function onack(packet) {
-        var ack = this.acks[packet.id];
-
-        if ("function" === typeof ack) {
-          ack.apply(this, packet.data);
-          delete this.acks[packet.id];
-        }
-      }
-      /**
-       * Called upon server connect.
-       *
-       * @private
-       */
-
-    }, {
-      key: "onconnect",
-      value: function onconnect(id) {
-        this.id = id;
-        this.connected = true;
-        this.disconnected = false;
-        this.emitBuffered();
-        this.emitReserved("connect");
-      }
-      /**
-       * Emit buffered events (received and emitted).
-       *
-       * @private
-       */
-
-    }, {
-      key: "emitBuffered",
-      value: function emitBuffered() {
-        var _this4 = this;
-
-        this.receiveBuffer.forEach(function (args) {
-          return _this4.emitEvent(args);
-        });
-        this.receiveBuffer = [];
-        this.sendBuffer.forEach(function (packet) {
-          return _this4.packet(packet);
-        });
-        this.sendBuffer = [];
-      }
-      /**
-       * Called upon server disconnect.
-       *
-       * @private
-       */
-
-    }, {
-      key: "ondisconnect",
-      value: function ondisconnect() {
-        this.destroy();
-        this.onclose("io server disconnect");
-      }
-      /**
-       * Called upon forced client/server side disconnections,
-       * this method ensures the manager stops tracking us and
-       * that reconnections don't get triggered for this.
-       *
-       * @private
-       */
-
-    }, {
-      key: "destroy",
-      value: function destroy() {
-        if (this.subs) {
-          // clean subscriptions to avoid reconnections
-          this.subs.forEach(function (subDestroy) {
-            return subDestroy();
-          });
-          this.subs = undefined;
-        }
-
-        this.io["_destroy"](this);
-      }
-      /**
-       * Disconnects the socket manually.
-       *
-       * @return self
-       * @public
-       */
-
-    }, {
-      key: "disconnect",
-      value: function disconnect() {
-        if (this.connected) {
-          this.packet({
-            type: PacketType.DISCONNECT
-          });
-        } // remove socket from pool
-
-
-        this.destroy();
-
-        if (this.connected) {
-          // fire events
-          this.onclose("io client disconnect");
-        }
-
-        return this;
-      }
-      /**
-       * Alias for disconnect()
-       *
-       * @return self
-       * @public
-       */
-
-    }, {
-      key: "close",
-      value: function close() {
-        return this.disconnect();
-      }
-      /**
-       * Sets the compress flag.
-       *
-       * @param compress - if `true`, compresses the sending data
-       * @return self
-       * @public
-       */
-
-    }, {
-      key: "compress",
-      value: function compress(_compress) {
-        this.flags.compress = _compress;
-        return this;
-      }
-      /**
-       * Sets a modifier for a subsequent event emission that the event message will be dropped when this socket is not
-       * ready to send messages.
-       *
-       * @returns self
-       * @public
-       */
-
-    }, {
-      key: "volatile",
-      get: function get() {
-        this.flags["volatile"] = true;
-        return this;
-      }
-      /**
-       * Sets a modifier for a subsequent event emission that the callback will be called with an error when the
-       * given number of milliseconds have elapsed without an acknowledgement from the server:
-       *
-       * ```
-       * socket.timeout(5000).emit("my-event", (err) => {
-       *   if (err) {
-       *     // the server did not acknowledge the event in the given delay
-       *   }
-       * });
-       * ```
-       *
-       * @returns self
-       * @public
-       */
-
-    }, {
-      key: "timeout",
-      value: function timeout(_timeout) {
-        this.flags.timeout = _timeout;
-        return this;
-      }
-      /**
-       * Adds a listener that will be fired when any event is emitted. The event name is passed as the first argument to the
-       * callback.
-       *
-       * @param listener
-       * @public
-       */
-
-    }, {
-      key: "onAny",
-      value: function onAny(listener) {
-        this._anyListeners = this._anyListeners || [];
-
-        this._anyListeners.push(listener);
-
-        return this;
-      }
-      /**
-       * Adds a listener that will be fired when any event is emitted. The event name is passed as the first argument to the
-       * callback. The listener is added to the beginning of the listeners array.
-       *
-       * @param listener
-       * @public
-       */
-
-    }, {
-      key: "prependAny",
-      value: function prependAny(listener) {
-        this._anyListeners = this._anyListeners || [];
-
-        this._anyListeners.unshift(listener);
-
-        return this;
-      }
-      /**
-       * Removes the listener that will be fired when any event is emitted.
-       *
-       * @param listener
-       * @public
-       */
-
-    }, {
-      key: "offAny",
-      value: function offAny(listener) {
-        if (!this._anyListeners) {
-          return this;
-        }
-
-        if (listener) {
-          var listeners = this._anyListeners;
-
-          for (var i = 0; i < listeners.length; i++) {
-            if (listener === listeners[i]) {
-              listeners.splice(i, 1);
-              return this;
-            }
-          }
-        } else {
-          this._anyListeners = [];
-        }
-
-        return this;
-      }
-      /**
-       * Returns an array of listeners that are listening for any event that is specified. This array can be manipulated,
-       * e.g. to remove listeners.
-       *
-       * @public
-       */
-
-    }, {
-      key: "listenersAny",
-      value: function listenersAny() {
-        return this._anyListeners || [];
-      }
-    }]);
-
-    return Socket;
-  }(Emitter_1);
-
-  /**
-   * Expose `Backoff`.
-   */
-
-  var backo2 = Backoff;
-  /**
-   * Initialize backoff timer with `opts`.
-   *
-   * - `min` initial timeout in milliseconds [100]
-   * - `max` max timeout [10000]
-   * - `jitter` [0]
-   * - `factor` [2]
-   *
-   * @param {Object} opts
-   * @api public
-   */
-
-  function Backoff(opts) {
-    opts = opts || {};
-    this.ms = opts.min || 100;
-    this.max = opts.max || 10000;
-    this.factor = opts.factor || 2;
-    this.jitter = opts.jitter > 0 && opts.jitter <= 1 ? opts.jitter : 0;
-    this.attempts = 0;
-  }
-  /**
-   * Return the backoff duration.
-   *
-   * @return {Number}
-   * @api public
-   */
-
-
-  Backoff.prototype.duration = function () {
-    var ms = this.ms * Math.pow(this.factor, this.attempts++);
-
-    if (this.jitter) {
-      var rand = Math.random();
-      var deviation = Math.floor(rand * this.jitter * ms);
-      ms = (Math.floor(rand * 10) & 1) == 0 ? ms - deviation : ms + deviation;
-    }
-
-    return Math.min(ms, this.max) | 0;
-  };
-  /**
-   * Reset the number of attempts.
-   *
-   * @api public
-   */
-
-
-  Backoff.prototype.reset = function () {
-    this.attempts = 0;
-  };
-  /**
-   * Set the minimum duration
-   *
-   * @api public
-   */
-
-
-  Backoff.prototype.setMin = function (min) {
-    this.ms = min;
-  };
-  /**
-   * Set the maximum duration
-   *
-   * @api public
-   */
-
-
-  Backoff.prototype.setMax = function (max) {
-    this.max = max;
-  };
-  /**
-   * Set the jitter
-   *
-   * @api public
-   */
-
-
-  Backoff.prototype.setJitter = function (jitter) {
-    this.jitter = jitter;
-  };
-
-  var Manager = /*#__PURE__*/function (_Emitter) {
-    _inherits(Manager, _Emitter);
-
-    var _super = _createSuper(Manager);
-
-    function Manager(uri, opts) {
-      var _this;
-
-      _classCallCheck(this, Manager);
-
-      var _a;
-
-      _this = _super.call(this);
-      _this.nsps = {};
-      _this.subs = [];
-
-      if (uri && "object" === _typeof(uri)) {
-        opts = uri;
-        uri = undefined;
-      }
-
-      opts = opts || {};
-      opts.path = opts.path || "/socket.io";
-      _this.opts = opts;
-      installTimerFunctions(_assertThisInitialized(_this), opts);
-
-      _this.reconnection(opts.reconnection !== false);
-
-      _this.reconnectionAttempts(opts.reconnectionAttempts || Infinity);
-
-      _this.reconnectionDelay(opts.reconnectionDelay || 1000);
-
-      _this.reconnectionDelayMax(opts.reconnectionDelayMax || 5000);
-
-      _this.randomizationFactor((_a = opts.randomizationFactor) !== null && _a !== void 0 ? _a : 0.5);
-
-      _this.backoff = new backo2({
-        min: _this.reconnectionDelay(),
-        max: _this.reconnectionDelayMax(),
-        jitter: _this.randomizationFactor()
-      });
-
-      _this.timeout(null == opts.timeout ? 20000 : opts.timeout);
-
-      _this._readyState = "closed";
-      _this.uri = uri;
-
-      var _parser = opts.parser || parser;
-
-      _this.encoder = new _parser.Encoder();
-      _this.decoder = new _parser.Decoder();
-      _this._autoConnect = opts.autoConnect !== false;
-      if (_this._autoConnect) _this.open();
-      return _this;
-    }
-
-    _createClass(Manager, [{
-      key: "reconnection",
-      value: function reconnection(v) {
-        if (!arguments.length) return this._reconnection;
-        this._reconnection = !!v;
-        return this;
-      }
-    }, {
-      key: "reconnectionAttempts",
-      value: function reconnectionAttempts(v) {
-        if (v === undefined) return this._reconnectionAttempts;
-        this._reconnectionAttempts = v;
-        return this;
-      }
-    }, {
-      key: "reconnectionDelay",
-      value: function reconnectionDelay(v) {
-        var _a;
-
-        if (v === undefined) return this._reconnectionDelay;
-        this._reconnectionDelay = v;
-        (_a = this.backoff) === null || _a === void 0 ? void 0 : _a.setMin(v);
-        return this;
-      }
-    }, {
-      key: "randomizationFactor",
-      value: function randomizationFactor(v) {
-        var _a;
-
-        if (v === undefined) return this._randomizationFactor;
-        this._randomizationFactor = v;
-        (_a = this.backoff) === null || _a === void 0 ? void 0 : _a.setJitter(v);
-        return this;
-      }
-    }, {
-      key: "reconnectionDelayMax",
-      value: function reconnectionDelayMax(v) {
-        var _a;
-
-        if (v === undefined) return this._reconnectionDelayMax;
-        this._reconnectionDelayMax = v;
-        (_a = this.backoff) === null || _a === void 0 ? void 0 : _a.setMax(v);
-        return this;
-      }
-    }, {
-      key: "timeout",
-      value: function timeout(v) {
-        if (!arguments.length) return this._timeout;
-        this._timeout = v;
-        return this;
-      }
-      /**
-       * Starts trying to reconnect if reconnection is enabled and we have not
-       * started reconnecting yet
-       *
-       * @private
-       */
-
-    }, {
-      key: "maybeReconnectOnOpen",
-      value: function maybeReconnectOnOpen() {
-        // Only try to reconnect if it's the first time we're connecting
-        if (!this._reconnecting && this._reconnection && this.backoff.attempts === 0) {
-          // keeps reconnection from firing twice for the same reconnection loop
-          this.reconnect();
-        }
-      }
-      /**
-       * Sets the current transport `socket`.
-       *
-       * @param {Function} fn - optional, callback
-       * @return self
-       * @public
-       */
-
-    }, {
-      key: "open",
-      value: function open(fn) {
-        var _this2 = this;
-
-        if (~this._readyState.indexOf("open")) return this;
-        this.engine = new Socket$1(this.uri, this.opts);
-        var socket = this.engine;
-        var self = this;
-        this._readyState = "opening";
-        this.skipReconnect = false; // emit `open`
-
-        var openSubDestroy = on(socket, "open", function () {
-          self.onopen();
-          fn && fn();
-        }); // emit `error`
-
-        var errorSub = on(socket, "error", function (err) {
-          self.cleanup();
-          self._readyState = "closed";
-
-          _this2.emitReserved("error", err);
-
-          if (fn) {
-            fn(err);
-          } else {
-            // Only do this if there is no fn to handle the error
-            self.maybeReconnectOnOpen();
-          }
-        });
-
-        if (false !== this._timeout) {
-          var timeout = this._timeout;
-
-          if (timeout === 0) {
-            openSubDestroy(); // prevents a race condition with the 'open' event
-          } // set timer
-
-
-          var timer = this.setTimeoutFn(function () {
-            openSubDestroy();
-            socket.close(); // @ts-ignore
-
-            socket.emit("error", new Error("timeout"));
-          }, timeout);
-
-          if (this.opts.autoUnref) {
-            timer.unref();
-          }
-
-          this.subs.push(function subDestroy() {
-            clearTimeout(timer);
-          });
-        }
-
-        this.subs.push(openSubDestroy);
-        this.subs.push(errorSub);
-        return this;
-      }
-      /**
-       * Alias for open()
-       *
-       * @return self
-       * @public
-       */
-
-    }, {
-      key: "connect",
-      value: function connect(fn) {
-        return this.open(fn);
-      }
-      /**
-       * Called upon transport open.
-       *
-       * @private
-       */
-
-    }, {
-      key: "onopen",
-      value: function onopen() {
-        // clear old subs
-        this.cleanup(); // mark as open
-
-        this._readyState = "open";
-        this.emitReserved("open"); // add new subs
-
-        var socket = this.engine;
-        this.subs.push(on(socket, "ping", this.onping.bind(this)), on(socket, "data", this.ondata.bind(this)), on(socket, "error", this.onerror.bind(this)), on(socket, "close", this.onclose.bind(this)), on(this.decoder, "decoded", this.ondecoded.bind(this)));
-      }
-      /**
-       * Called upon a ping.
-       *
-       * @private
-       */
-
-    }, {
-      key: "onping",
-      value: function onping() {
-        this.emitReserved("ping");
-      }
-      /**
-       * Called with data.
-       *
-       * @private
-       */
-
-    }, {
-      key: "ondata",
-      value: function ondata(data) {
-        this.decoder.add(data);
-      }
-      /**
-       * Called when parser fully decodes a packet.
-       *
-       * @private
-       */
-
-    }, {
-      key: "ondecoded",
-      value: function ondecoded(packet) {
-        this.emitReserved("packet", packet);
-      }
-      /**
-       * Called upon socket error.
-       *
-       * @private
-       */
-
-    }, {
-      key: "onerror",
-      value: function onerror(err) {
-        this.emitReserved("error", err);
-      }
-      /**
-       * Creates a new socket for the given `nsp`.
-       *
-       * @return {Socket}
-       * @public
-       */
-
-    }, {
-      key: "socket",
-      value: function socket(nsp, opts) {
-        var socket = this.nsps[nsp];
-
-        if (!socket) {
-          socket = new Socket(this, nsp, opts);
-          this.nsps[nsp] = socket;
-        }
-
-        return socket;
-      }
-      /**
-       * Called upon a socket close.
-       *
-       * @param socket
-       * @private
-       */
-
-    }, {
-      key: "_destroy",
-      value: function _destroy(socket) {
-        var nsps = Object.keys(this.nsps);
-
-        for (var _i = 0, _nsps = nsps; _i < _nsps.length; _i++) {
-          var nsp = _nsps[_i];
-          var _socket = this.nsps[nsp];
-
-          if (_socket.active) {
-            return;
-          }
-        }
-
-        this._close();
-      }
-      /**
-       * Writes a packet.
-       *
-       * @param packet
-       * @private
-       */
-
-    }, {
-      key: "_packet",
-      value: function _packet(packet) {
-        var encodedPackets = this.encoder.encode(packet);
-
-        for (var i = 0; i < encodedPackets.length; i++) {
-          this.engine.write(encodedPackets[i], packet.options);
-        }
-      }
-      /**
-       * Clean up transport subscriptions and packet buffer.
-       *
-       * @private
-       */
-
-    }, {
-      key: "cleanup",
-      value: function cleanup() {
-        this.subs.forEach(function (subDestroy) {
-          return subDestroy();
-        });
-        this.subs.length = 0;
-        this.decoder.destroy();
-      }
-      /**
-       * Close the current socket.
-       *
-       * @private
-       */
-
-    }, {
-      key: "_close",
-      value: function _close() {
-        this.skipReconnect = true;
-        this._reconnecting = false;
-        this.onclose("forced close");
-        if (this.engine) this.engine.close();
-      }
-      /**
-       * Alias for close()
-       *
-       * @private
-       */
-
-    }, {
-      key: "disconnect",
-      value: function disconnect() {
-        return this._close();
-      }
-      /**
-       * Called upon engine close.
-       *
-       * @private
-       */
-
-    }, {
-      key: "onclose",
-      value: function onclose(reason) {
-        this.cleanup();
-        this.backoff.reset();
-        this._readyState = "closed";
-        this.emitReserved("close", reason);
-
-        if (this._reconnection && !this.skipReconnect) {
-          this.reconnect();
-        }
-      }
-      /**
-       * Attempt a reconnection.
-       *
-       * @private
-       */
-
-    }, {
-      key: "reconnect",
-      value: function reconnect() {
-        var _this3 = this;
-
-        if (this._reconnecting || this.skipReconnect) return this;
-        var self = this;
-
-        if (this.backoff.attempts >= this._reconnectionAttempts) {
-          this.backoff.reset();
-          this.emitReserved("reconnect_failed");
-          this._reconnecting = false;
-        } else {
-          var delay = this.backoff.duration();
-          this._reconnecting = true;
-          var timer = this.setTimeoutFn(function () {
-            if (self.skipReconnect) return;
-
-            _this3.emitReserved("reconnect_attempt", self.backoff.attempts); // check again for the case socket closed in above events
-
-
-            if (self.skipReconnect) return;
-            self.open(function (err) {
-              if (err) {
-                self._reconnecting = false;
-                self.reconnect();
-
-                _this3.emitReserved("reconnect_error", err);
-              } else {
-                self.onreconnect();
-              }
-            });
-          }, delay);
-
-          if (this.opts.autoUnref) {
-            timer.unref();
-          }
-
-          this.subs.push(function subDestroy() {
-            clearTimeout(timer);
-          });
-        }
-      }
-      /**
-       * Called upon successful reconnect.
-       *
-       * @private
-       */
-
-    }, {
-      key: "onreconnect",
-      value: function onreconnect() {
-        var attempt = this.backoff.attempts;
-        this._reconnecting = false;
-        this.backoff.reset();
-        this.emitReserved("reconnect", attempt);
-      }
-    }]);
-
-    return Manager;
-  }(Emitter_1);
-
-  /**
-   * Managers cache.
-   */
-
-  var cache = {};
-
-  function lookup(uri, opts) {
-    if (_typeof(uri) === "object") {
-      opts = uri;
-      uri = undefined;
-    }
-
-    opts = opts || {};
-    var parsed = url(uri, opts.path || "/socket.io");
-    var source = parsed.source;
-    var id = parsed.id;
-    var path = parsed.path;
-    var sameNamespace = cache[id] && path in cache[id]["nsps"];
-    var newConnection = opts.forceNew || opts["force new connection"] || false === opts.multiplex || sameNamespace;
-    var io;
-
-    if (newConnection) {
-      io = new Manager(source, opts);
-    } else {
-      if (!cache[id]) {
-        cache[id] = new Manager(source, opts);
-      }
-
-      io = cache[id];
-    }
-
-    if (parsed.query && !opts.query) {
-      opts.query = parsed.queryKey;
-    }
-
-    return io.socket(parsed.path, opts);
-  } // so that "lookup" can be used both as a function (e.g. `io(...)`) and as a
-  // namespace (e.g. `io.connect(...)`), for backward compatibility
-
-
-  _extends(lookup, {
-    Manager: Manager,
-    Socket: Socket,
-    io: lookup,
-    connect: lookup
-  });
-
-  return lookup;
-
-}));
+  }
+
+  return false;
+}
+
+exports.hasBinary = hasBinary;
+
+/***/ }),
+
+/***/ "./node_modules/yeast/index.js":
+/*!*************************************!*\
+  !*** ./node_modules/yeast/index.js ***!
+  \*************************************/
+/*! no static exports found */
+/***/ (function(module, exports, __webpack_require__) {
+
+"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;
+
+/***/ })
+
+/******/ });
+});
 //# sourceMappingURL=socket.io.js.map
Index: trip-planner-front/node_modules/socket.io/client-dist/socket.io.js.map
===================================================================
--- trip-planner-front/node_modules/socket.io/client-dist/socket.io.js.map	(revision 571e0df9a7a5e798c9941a85842f785177bedbbd)
+++ trip-planner-front/node_modules/socket.io/client-dist/socket.io.js.map	(revision 6a3a178323fd905112b5392bd9d3cb83b66ef2d3)
@@ -1,1 +1,1 @@
-{"version":3,"file":"socket.io.js","sources":["../node_modules/parseuri/index.js","../build/esm/url.js","../node_modules/has-cors/index.js","../node_modules/engine.io-client/build/esm/globalThis.browser.js","../node_modules/engine.io-client/build/esm/transports/xmlhttprequest.browser.js","../node_modules/engine.io-client/build/esm/util.js","../node_modules/@socket.io/component-emitter/index.js","../node_modules/engine.io-client/node_modules/engine.io-parser/build/esm/commons.js","../node_modules/engine.io-client/node_modules/engine.io-parser/build/esm/encodePacket.browser.js","../node_modules/engine.io-client/node_modules/base64-arraybuffer/dist/base64-arraybuffer.es5.js","../node_modules/engine.io-client/node_modules/engine.io-parser/build/esm/decodePacket.browser.js","../node_modules/engine.io-client/node_modules/engine.io-parser/build/esm/index.js","../node_modules/engine.io-client/build/esm/transport.js","../node_modules/yeast/index.js","../node_modules/parseqs/index.js","../node_modules/engine.io-client/build/esm/transports/polling.js","../node_modules/engine.io-client/build/esm/transports/polling-xhr.js","../node_modules/engine.io-client/build/esm/transports/websocket-constructor.browser.js","../node_modules/engine.io-client/build/esm/transports/websocket.js","../node_modules/engine.io-client/build/esm/transports/index.js","../node_modules/engine.io-client/build/esm/socket.js","../node_modules/socket.io-parser/build/esm/is-binary.js","../node_modules/socket.io-parser/build/esm/binary.js","../node_modules/socket.io-parser/build/esm/index.js","../build/esm/on.js","../build/esm/socket.js","../node_modules/backo2/index.js","../build/esm/manager.js","../build/esm/index.js"],"sourcesContent":["/**\n * Parses an URI\n *\n * @author Steven Levithan <stevenlevithan.com> (MIT license)\n * @api private\n */\n\nvar re = /^(?:(?![^:@]+:[^:@\\/]*@)(http|https|ws|wss):\\/\\/)?((?:(([^:@]*)(?::([^:@]*))?)?@)?((?:[a-f0-9]{0,4}:){2,7}[a-f0-9]{0,4}|[^:\\/?#]*)(?::(\\d*))?)(((\\/(?:[^?#](?![^?#\\/]*\\.[^?#\\/.]+(?:[?#]|$)))*\\/?)?([^?#\\/]*))(?:\\?([^#]*))?(?:#(.*))?)/;\n\nvar parts = [\n    'source', 'protocol', 'authority', 'userInfo', 'user', 'password', 'host', 'port', 'relative', 'path', 'directory', 'file', 'query', 'anchor'\n];\n\nmodule.exports = function parseuri(str) {\n    var src = str,\n        b = str.indexOf('['),\n        e = str.indexOf(']');\n\n    if (b != -1 && e != -1) {\n        str = str.substring(0, b) + str.substring(b, e).replace(/:/g, ';') + str.substring(e, str.length);\n    }\n\n    var m = re.exec(str || ''),\n        uri = {},\n        i = 14;\n\n    while (i--) {\n        uri[parts[i]] = m[i] || '';\n    }\n\n    if (b != -1 && e != -1) {\n        uri.source = src;\n        uri.host = uri.host.substring(1, uri.host.length - 1).replace(/;/g, ':');\n        uri.authority = uri.authority.replace('[', '').replace(']', '').replace(/;/g, ':');\n        uri.ipv6uri = true;\n    }\n\n    uri.pathNames = pathNames(uri, uri['path']);\n    uri.queryKey = queryKey(uri, uri['query']);\n\n    return uri;\n};\n\nfunction pathNames(obj, path) {\n    var regx = /\\/{2,9}/g,\n        names = path.replace(regx, \"/\").split(\"/\");\n\n    if (path.substr(0, 1) == '/' || path.length === 0) {\n        names.splice(0, 1);\n    }\n    if (path.substr(path.length - 1, 1) == '/') {\n        names.splice(names.length - 1, 1);\n    }\n\n    return names;\n}\n\nfunction queryKey(uri, query) {\n    var data = {};\n\n    query.replace(/(?:^|&)([^&=]*)=?([^&]*)/g, function ($0, $1, $2) {\n        if ($1) {\n            data[$1] = $2;\n        }\n    });\n\n    return data;\n}\n","import parseuri from \"parseuri\";\n/**\n * URL parser.\n *\n * @param uri - url\n * @param path - the request path of the connection\n * @param loc - An object meant to mimic window.location.\n *        Defaults to window.location.\n * @public\n */\nexport function url(uri, path = \"\", loc) {\n    let obj = uri;\n    // default to window.location\n    loc = loc || (typeof location !== \"undefined\" && location);\n    if (null == uri)\n        uri = loc.protocol + \"//\" + loc.host;\n    // relative path support\n    if (typeof uri === \"string\") {\n        if (\"/\" === uri.charAt(0)) {\n            if (\"/\" === uri.charAt(1)) {\n                uri = loc.protocol + uri;\n            }\n            else {\n                uri = loc.host + uri;\n            }\n        }\n        if (!/^(https?|wss?):\\/\\//.test(uri)) {\n            if (\"undefined\" !== typeof loc) {\n                uri = loc.protocol + \"//\" + uri;\n            }\n            else {\n                uri = \"https://\" + uri;\n            }\n        }\n        // parse\n        obj = parseuri(uri);\n    }\n    // make sure we treat `localhost:80` and `localhost` equally\n    if (!obj.port) {\n        if (/^(http|ws)$/.test(obj.protocol)) {\n            obj.port = \"80\";\n        }\n        else if (/^(http|ws)s$/.test(obj.protocol)) {\n            obj.port = \"443\";\n        }\n    }\n    obj.path = obj.path || \"/\";\n    const ipv6 = obj.host.indexOf(\":\") !== -1;\n    const host = ipv6 ? \"[\" + obj.host + \"]\" : obj.host;\n    // define unique id\n    obj.id = obj.protocol + \"://\" + host + \":\" + obj.port + path;\n    // define href\n    obj.href =\n        obj.protocol +\n            \"://\" +\n            host +\n            (loc && loc.port === obj.port ? \"\" : \":\" + obj.port);\n    return obj;\n}\n","\n/**\n * Module exports.\n *\n * Logic borrowed from Modernizr:\n *\n *   - https://github.com/Modernizr/Modernizr/blob/master/feature-detects/cors.js\n */\n\ntry {\n  module.exports = typeof XMLHttpRequest !== 'undefined' &&\n    'withCredentials' in new XMLHttpRequest();\n} catch (err) {\n  // if XMLHttp support is disabled in IE then it will throw\n  // when trying to create\n  module.exports = false;\n}\n","export default (() => {\n    if (typeof self !== \"undefined\") {\n        return self;\n    }\n    else if (typeof window !== \"undefined\") {\n        return window;\n    }\n    else {\n        return Function(\"return this\")();\n    }\n})();\n","// browser shim for xmlhttprequest module\nimport hasCORS from \"has-cors\";\nimport globalThis from \"../globalThis.js\";\nexport default function (opts) {\n    const xdomain = opts.xdomain;\n    // XMLHttpRequest can be disabled on IE\n    try {\n        if (\"undefined\" !== typeof XMLHttpRequest && (!xdomain || hasCORS)) {\n            return new XMLHttpRequest();\n        }\n    }\n    catch (e) { }\n    if (!xdomain) {\n        try {\n            return new globalThis[[\"Active\"].concat(\"Object\").join(\"X\")](\"Microsoft.XMLHTTP\");\n        }\n        catch (e) { }\n    }\n}\n","import globalThis from \"./globalThis.js\";\nexport function pick(obj, ...attr) {\n    return attr.reduce((acc, k) => {\n        if (obj.hasOwnProperty(k)) {\n            acc[k] = obj[k];\n        }\n        return acc;\n    }, {});\n}\n// Keep a reference to the real timeout functions so they can be used when overridden\nconst NATIVE_SET_TIMEOUT = setTimeout;\nconst NATIVE_CLEAR_TIMEOUT = clearTimeout;\nexport function installTimerFunctions(obj, opts) {\n    if (opts.useNativeTimers) {\n        obj.setTimeoutFn = NATIVE_SET_TIMEOUT.bind(globalThis);\n        obj.clearTimeoutFn = NATIVE_CLEAR_TIMEOUT.bind(globalThis);\n    }\n    else {\n        obj.setTimeoutFn = setTimeout.bind(globalThis);\n        obj.clearTimeoutFn = clearTimeout.bind(globalThis);\n    }\n}\n","\n/**\n * Expose `Emitter`.\n */\n\nexports.Emitter = Emitter;\n\n/**\n * Initialize a new `Emitter`.\n *\n * @api public\n */\n\nfunction Emitter(obj) {\n  if (obj) return mixin(obj);\n}\n\n/**\n * Mixin the emitter properties.\n *\n * @param {Object} obj\n * @return {Object}\n * @api private\n */\n\nfunction mixin(obj) {\n  for (var key in Emitter.prototype) {\n    obj[key] = Emitter.prototype[key];\n  }\n  return obj;\n}\n\n/**\n * Listen on the given `event` with `fn`.\n *\n * @param {String} event\n * @param {Function} fn\n * @return {Emitter}\n * @api public\n */\n\nEmitter.prototype.on =\nEmitter.prototype.addEventListener = function(event, fn){\n  this._callbacks = this._callbacks || {};\n  (this._callbacks['$' + event] = this._callbacks['$' + event] || [])\n    .push(fn);\n  return this;\n};\n\n/**\n * Adds an `event` listener that will be invoked a single\n * time then automatically removed.\n *\n * @param {String} event\n * @param {Function} fn\n * @return {Emitter}\n * @api public\n */\n\nEmitter.prototype.once = function(event, fn){\n  function on() {\n    this.off(event, on);\n    fn.apply(this, arguments);\n  }\n\n  on.fn = fn;\n  this.on(event, on);\n  return this;\n};\n\n/**\n * Remove the given callback for `event` or all\n * registered callbacks.\n *\n * @param {String} event\n * @param {Function} fn\n * @return {Emitter}\n * @api public\n */\n\nEmitter.prototype.off =\nEmitter.prototype.removeListener =\nEmitter.prototype.removeAllListeners =\nEmitter.prototype.removeEventListener = function(event, fn){\n  this._callbacks = this._callbacks || {};\n\n  // all\n  if (0 == arguments.length) {\n    this._callbacks = {};\n    return this;\n  }\n\n  // specific event\n  var callbacks = this._callbacks['$' + event];\n  if (!callbacks) return this;\n\n  // remove all handlers\n  if (1 == arguments.length) {\n    delete this._callbacks['$' + event];\n    return this;\n  }\n\n  // remove specific handler\n  var cb;\n  for (var i = 0; i < callbacks.length; i++) {\n    cb = callbacks[i];\n    if (cb === fn || cb.fn === fn) {\n      callbacks.splice(i, 1);\n      break;\n    }\n  }\n\n  // Remove event specific arrays for event types that no\n  // one is subscribed for to avoid memory leak.\n  if (callbacks.length === 0) {\n    delete this._callbacks['$' + event];\n  }\n\n  return this;\n};\n\n/**\n * Emit `event` with the given args.\n *\n * @param {String} event\n * @param {Mixed} ...\n * @return {Emitter}\n */\n\nEmitter.prototype.emit = function(event){\n  this._callbacks = this._callbacks || {};\n\n  var args = new Array(arguments.length - 1)\n    , callbacks = this._callbacks['$' + event];\n\n  for (var i = 1; i < arguments.length; i++) {\n    args[i - 1] = arguments[i];\n  }\n\n  if (callbacks) {\n    callbacks = callbacks.slice(0);\n    for (var i = 0, len = callbacks.length; i < len; ++i) {\n      callbacks[i].apply(this, args);\n    }\n  }\n\n  return this;\n};\n\n// alias used for reserved events (protected method)\nEmitter.prototype.emitReserved = Emitter.prototype.emit;\n\n/**\n * Return array of callbacks for `event`.\n *\n * @param {String} event\n * @return {Array}\n * @api public\n */\n\nEmitter.prototype.listeners = function(event){\n  this._callbacks = this._callbacks || {};\n  return this._callbacks['$' + event] || [];\n};\n\n/**\n * Check if this emitter has `event` handlers.\n *\n * @param {String} event\n * @return {Boolean}\n * @api public\n */\n\nEmitter.prototype.hasListeners = function(event){\n  return !! this.listeners(event).length;\n};\n","const PACKET_TYPES = Object.create(null); // no Map = no polyfill\nPACKET_TYPES[\"open\"] = \"0\";\nPACKET_TYPES[\"close\"] = \"1\";\nPACKET_TYPES[\"ping\"] = \"2\";\nPACKET_TYPES[\"pong\"] = \"3\";\nPACKET_TYPES[\"message\"] = \"4\";\nPACKET_TYPES[\"upgrade\"] = \"5\";\nPACKET_TYPES[\"noop\"] = \"6\";\nconst PACKET_TYPES_REVERSE = Object.create(null);\nObject.keys(PACKET_TYPES).forEach(key => {\n    PACKET_TYPES_REVERSE[PACKET_TYPES[key]] = key;\n});\nconst ERROR_PACKET = { type: \"error\", data: \"parser error\" };\nexport { PACKET_TYPES, PACKET_TYPES_REVERSE, ERROR_PACKET };\n","import { PACKET_TYPES } from \"./commons.js\";\nconst withNativeBlob = typeof Blob === \"function\" ||\n    (typeof Blob !== \"undefined\" &&\n        Object.prototype.toString.call(Blob) === \"[object BlobConstructor]\");\nconst withNativeArrayBuffer = typeof ArrayBuffer === \"function\";\n// ArrayBuffer.isView method is not defined in IE10\nconst isView = obj => {\n    return typeof ArrayBuffer.isView === \"function\"\n        ? ArrayBuffer.isView(obj)\n        : obj && obj.buffer instanceof ArrayBuffer;\n};\nconst encodePacket = ({ type, data }, supportsBinary, callback) => {\n    if (withNativeBlob && data instanceof Blob) {\n        if (supportsBinary) {\n            return callback(data);\n        }\n        else {\n            return encodeBlobAsBase64(data, callback);\n        }\n    }\n    else if (withNativeArrayBuffer &&\n        (data instanceof ArrayBuffer || isView(data))) {\n        if (supportsBinary) {\n            return callback(data);\n        }\n        else {\n            return encodeBlobAsBase64(new Blob([data]), callback);\n        }\n    }\n    // plain string\n    return callback(PACKET_TYPES[type] + (data || \"\"));\n};\nconst encodeBlobAsBase64 = (data, callback) => {\n    const fileReader = new FileReader();\n    fileReader.onload = function () {\n        const content = fileReader.result.split(\",\")[1];\n        callback(\"b\" + content);\n    };\n    return fileReader.readAsDataURL(data);\n};\nexport default encodePacket;\n","/*\n * base64-arraybuffer 1.0.1 <https://github.com/niklasvh/base64-arraybuffer>\n * Copyright (c) 2021 Niklas von Hertzen <https://hertzen.com>\n * Released under MIT License\n */\nvar chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';\n// Use a lookup table to find the index.\nvar lookup = typeof Uint8Array === 'undefined' ? [] : new Uint8Array(256);\nfor (var i = 0; i < chars.length; i++) {\n    lookup[chars.charCodeAt(i)] = i;\n}\nvar encode = function (arraybuffer) {\n    var bytes = new Uint8Array(arraybuffer), i, len = bytes.length, base64 = '';\n    for (i = 0; i < len; i += 3) {\n        base64 += chars[bytes[i] >> 2];\n        base64 += chars[((bytes[i] & 3) << 4) | (bytes[i + 1] >> 4)];\n        base64 += chars[((bytes[i + 1] & 15) << 2) | (bytes[i + 2] >> 6)];\n        base64 += chars[bytes[i + 2] & 63];\n    }\n    if (len % 3 === 2) {\n        base64 = base64.substring(0, base64.length - 1) + '=';\n    }\n    else if (len % 3 === 1) {\n        base64 = base64.substring(0, base64.length - 2) + '==';\n    }\n    return base64;\n};\nvar decode = function (base64) {\n    var bufferLength = base64.length * 0.75, len = base64.length, i, p = 0, encoded1, encoded2, encoded3, encoded4;\n    if (base64[base64.length - 1] === '=') {\n        bufferLength--;\n        if (base64[base64.length - 2] === '=') {\n            bufferLength--;\n        }\n    }\n    var arraybuffer = new ArrayBuffer(bufferLength), bytes = new Uint8Array(arraybuffer);\n    for (i = 0; i < len; i += 4) {\n        encoded1 = lookup[base64.charCodeAt(i)];\n        encoded2 = lookup[base64.charCodeAt(i + 1)];\n        encoded3 = lookup[base64.charCodeAt(i + 2)];\n        encoded4 = lookup[base64.charCodeAt(i + 3)];\n        bytes[p++] = (encoded1 << 2) | (encoded2 >> 4);\n        bytes[p++] = ((encoded2 & 15) << 4) | (encoded3 >> 2);\n        bytes[p++] = ((encoded3 & 3) << 6) | (encoded4 & 63);\n    }\n    return arraybuffer;\n};\n\nexport { decode, encode };\n//# sourceMappingURL=base64-arraybuffer.es5.js.map\n","import { ERROR_PACKET, PACKET_TYPES_REVERSE } from \"./commons.js\";\nimport { decode } from \"base64-arraybuffer\";\nconst withNativeArrayBuffer = typeof ArrayBuffer === \"function\";\nconst decodePacket = (encodedPacket, binaryType) => {\n    if (typeof encodedPacket !== \"string\") {\n        return {\n            type: \"message\",\n            data: mapBinary(encodedPacket, binaryType)\n        };\n    }\n    const type = encodedPacket.charAt(0);\n    if (type === \"b\") {\n        return {\n            type: \"message\",\n            data: decodeBase64Packet(encodedPacket.substring(1), binaryType)\n        };\n    }\n    const packetType = PACKET_TYPES_REVERSE[type];\n    if (!packetType) {\n        return ERROR_PACKET;\n    }\n    return encodedPacket.length > 1\n        ? {\n            type: PACKET_TYPES_REVERSE[type],\n            data: encodedPacket.substring(1)\n        }\n        : {\n            type: PACKET_TYPES_REVERSE[type]\n        };\n};\nconst decodeBase64Packet = (data, binaryType) => {\n    if (withNativeArrayBuffer) {\n        const decoded = decode(data);\n        return mapBinary(decoded, binaryType);\n    }\n    else {\n        return { base64: true, data }; // fallback for old browsers\n    }\n};\nconst mapBinary = (data, binaryType) => {\n    switch (binaryType) {\n        case \"blob\":\n            return data instanceof ArrayBuffer ? new Blob([data]) : data;\n        case \"arraybuffer\":\n        default:\n            return data; // assuming the data is already an ArrayBuffer\n    }\n};\nexport default decodePacket;\n","import encodePacket from \"./encodePacket.js\";\nimport decodePacket from \"./decodePacket.js\";\nconst SEPARATOR = String.fromCharCode(30); // see https://en.wikipedia.org/wiki/Delimiter#ASCII_delimited_text\nconst encodePayload = (packets, callback) => {\n    // some packets may be added to the array while encoding, so the initial length must be saved\n    const length = packets.length;\n    const encodedPackets = new Array(length);\n    let count = 0;\n    packets.forEach((packet, i) => {\n        // force base64 encoding for binary packets\n        encodePacket(packet, false, encodedPacket => {\n            encodedPackets[i] = encodedPacket;\n            if (++count === length) {\n                callback(encodedPackets.join(SEPARATOR));\n            }\n        });\n    });\n};\nconst decodePayload = (encodedPayload, binaryType) => {\n    const encodedPackets = encodedPayload.split(SEPARATOR);\n    const packets = [];\n    for (let i = 0; i < encodedPackets.length; i++) {\n        const decodedPacket = decodePacket(encodedPackets[i], binaryType);\n        packets.push(decodedPacket);\n        if (decodedPacket.type === \"error\") {\n            break;\n        }\n    }\n    return packets;\n};\nexport const protocol = 4;\nexport { encodePacket, encodePayload, decodePacket, decodePayload };\n","import { decodePacket } from \"engine.io-parser\";\nimport { Emitter } from \"@socket.io/component-emitter\";\nimport { installTimerFunctions } from \"./util.js\";\nexport class Transport extends Emitter {\n    /**\n     * Transport abstract constructor.\n     *\n     * @param {Object} options.\n     * @api private\n     */\n    constructor(opts) {\n        super();\n        this.writable = false;\n        installTimerFunctions(this, opts);\n        this.opts = opts;\n        this.query = opts.query;\n        this.readyState = \"\";\n        this.socket = opts.socket;\n    }\n    /**\n     * Emits an error.\n     *\n     * @param {String} str\n     * @return {Transport} for chaining\n     * @api protected\n     */\n    onError(msg, desc) {\n        const err = new Error(msg);\n        // @ts-ignore\n        err.type = \"TransportError\";\n        // @ts-ignore\n        err.description = desc;\n        super.emit(\"error\", err);\n        return this;\n    }\n    /**\n     * Opens the transport.\n     *\n     * @api public\n     */\n    open() {\n        if (\"closed\" === this.readyState || \"\" === this.readyState) {\n            this.readyState = \"opening\";\n            this.doOpen();\n        }\n        return this;\n    }\n    /**\n     * Closes the transport.\n     *\n     * @api public\n     */\n    close() {\n        if (\"opening\" === this.readyState || \"open\" === this.readyState) {\n            this.doClose();\n            this.onClose();\n        }\n        return this;\n    }\n    /**\n     * Sends multiple packets.\n     *\n     * @param {Array} packets\n     * @api public\n     */\n    send(packets) {\n        if (\"open\" === this.readyState) {\n            this.write(packets);\n        }\n        else {\n            // this might happen if the transport was silently closed in the beforeunload event handler\n        }\n    }\n    /**\n     * Called upon open\n     *\n     * @api protected\n     */\n    onOpen() {\n        this.readyState = \"open\";\n        this.writable = true;\n        super.emit(\"open\");\n    }\n    /**\n     * Called with data.\n     *\n     * @param {String} data\n     * @api protected\n     */\n    onData(data) {\n        const packet = decodePacket(data, this.socket.binaryType);\n        this.onPacket(packet);\n    }\n    /**\n     * Called with a decoded packet.\n     *\n     * @api protected\n     */\n    onPacket(packet) {\n        super.emit(\"packet\", packet);\n    }\n    /**\n     * Called upon close.\n     *\n     * @api protected\n     */\n    onClose() {\n        this.readyState = \"closed\";\n        super.emit(\"close\");\n    }\n}\n","'use strict';\n\nvar alphabet = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-_'.split('')\n  , length = 64\n  , map = {}\n  , seed = 0\n  , i = 0\n  , prev;\n\n/**\n * Return a string representing the specified number.\n *\n * @param {Number} num The number to convert.\n * @returns {String} The string representation of the number.\n * @api public\n */\nfunction encode(num) {\n  var encoded = '';\n\n  do {\n    encoded = alphabet[num % length] + encoded;\n    num = Math.floor(num / length);\n  } while (num > 0);\n\n  return encoded;\n}\n\n/**\n * Return the integer value specified by the given string.\n *\n * @param {String} str The string to convert.\n * @returns {Number} The integer value represented by the string.\n * @api public\n */\nfunction decode(str) {\n  var decoded = 0;\n\n  for (i = 0; i < str.length; i++) {\n    decoded = decoded * length + map[str.charAt(i)];\n  }\n\n  return decoded;\n}\n\n/**\n * Yeast: A tiny growing id generator.\n *\n * @returns {String} A unique id.\n * @api public\n */\nfunction yeast() {\n  var now = encode(+new Date());\n\n  if (now !== prev) return seed = 0, prev = now;\n  return now +'.'+ encode(seed++);\n}\n\n//\n// Map each character to its index.\n//\nfor (; i < length; i++) map[alphabet[i]] = i;\n\n//\n// Expose the `yeast`, `encode` and `decode` functions.\n//\nyeast.encode = encode;\nyeast.decode = decode;\nmodule.exports = yeast;\n","/**\n * Compiles a querystring\n * Returns string representation of the object\n *\n * @param {Object}\n * @api private\n */\n\nexports.encode = function (obj) {\n  var str = '';\n\n  for (var i in obj) {\n    if (obj.hasOwnProperty(i)) {\n      if (str.length) str += '&';\n      str += encodeURIComponent(i) + '=' + encodeURIComponent(obj[i]);\n    }\n  }\n\n  return str;\n};\n\n/**\n * Parses a simple querystring into an object\n *\n * @param {String} qs\n * @api private\n */\n\nexports.decode = function(qs){\n  var qry = {};\n  var pairs = qs.split('&');\n  for (var i = 0, l = pairs.length; i < l; i++) {\n    var pair = pairs[i].split('=');\n    qry[decodeURIComponent(pair[0])] = decodeURIComponent(pair[1]);\n  }\n  return qry;\n};\n","import { Transport } from \"../transport.js\";\nimport yeast from \"yeast\";\nimport parseqs from \"parseqs\";\nimport { encodePayload, decodePayload } from \"engine.io-parser\";\nexport class Polling extends Transport {\n    constructor() {\n        super(...arguments);\n        this.polling = false;\n    }\n    /**\n     * Transport name.\n     */\n    get name() {\n        return \"polling\";\n    }\n    /**\n     * Opens the socket (triggers polling). We write a PING message to determine\n     * when the transport is open.\n     *\n     * @api private\n     */\n    doOpen() {\n        this.poll();\n    }\n    /**\n     * Pauses polling.\n     *\n     * @param {Function} callback upon buffers are flushed and transport is paused\n     * @api private\n     */\n    pause(onPause) {\n        this.readyState = \"pausing\";\n        const pause = () => {\n            this.readyState = \"paused\";\n            onPause();\n        };\n        if (this.polling || !this.writable) {\n            let total = 0;\n            if (this.polling) {\n                total++;\n                this.once(\"pollComplete\", function () {\n                    --total || pause();\n                });\n            }\n            if (!this.writable) {\n                total++;\n                this.once(\"drain\", function () {\n                    --total || pause();\n                });\n            }\n        }\n        else {\n            pause();\n        }\n    }\n    /**\n     * Starts polling cycle.\n     *\n     * @api public\n     */\n    poll() {\n        this.polling = true;\n        this.doPoll();\n        this.emit(\"poll\");\n    }\n    /**\n     * Overloads onData to detect payloads.\n     *\n     * @api private\n     */\n    onData(data) {\n        const callback = packet => {\n            // if its the first message we consider the transport open\n            if (\"opening\" === this.readyState && packet.type === \"open\") {\n                this.onOpen();\n            }\n            // if its a close packet, we close the ongoing requests\n            if (\"close\" === packet.type) {\n                this.onClose();\n                return false;\n            }\n            // otherwise bypass onData and handle the message\n            this.onPacket(packet);\n        };\n        // decode payload\n        decodePayload(data, this.socket.binaryType).forEach(callback);\n        // if an event did not trigger closing\n        if (\"closed\" !== this.readyState) {\n            // if we got data we're not polling\n            this.polling = false;\n            this.emit(\"pollComplete\");\n            if (\"open\" === this.readyState) {\n                this.poll();\n            }\n            else {\n            }\n        }\n    }\n    /**\n     * For polling, send a close packet.\n     *\n     * @api private\n     */\n    doClose() {\n        const close = () => {\n            this.write([{ type: \"close\" }]);\n        };\n        if (\"open\" === this.readyState) {\n            close();\n        }\n        else {\n            // in case we're trying to close while\n            // handshaking is in progress (GH-164)\n            this.once(\"open\", close);\n        }\n    }\n    /**\n     * Writes a packets payload.\n     *\n     * @param {Array} data packets\n     * @param {Function} drain callback\n     * @api private\n     */\n    write(packets) {\n        this.writable = false;\n        encodePayload(packets, data => {\n            this.doWrite(data, () => {\n                this.writable = true;\n                this.emit(\"drain\");\n            });\n        });\n    }\n    /**\n     * Generates uri for connection.\n     *\n     * @api private\n     */\n    uri() {\n        let query = this.query || {};\n        const schema = this.opts.secure ? \"https\" : \"http\";\n        let port = \"\";\n        // cache busting is forced\n        if (false !== this.opts.timestampRequests) {\n            query[this.opts.timestampParam] = yeast();\n        }\n        if (!this.supportsBinary && !query.sid) {\n            query.b64 = 1;\n        }\n        // avoid port if default for schema\n        if (this.opts.port &&\n            ((\"https\" === schema && Number(this.opts.port) !== 443) ||\n                (\"http\" === schema && Number(this.opts.port) !== 80))) {\n            port = \":\" + this.opts.port;\n        }\n        const encodedQuery = parseqs.encode(query);\n        const ipv6 = this.opts.hostname.indexOf(\":\") !== -1;\n        return (schema +\n            \"://\" +\n            (ipv6 ? \"[\" + this.opts.hostname + \"]\" : this.opts.hostname) +\n            port +\n            this.opts.path +\n            (encodedQuery.length ? \"?\" + encodedQuery : \"\"));\n    }\n}\n","/* global attachEvent */\nimport XMLHttpRequest from \"./xmlhttprequest.js\";\nimport globalThis from \"../globalThis.js\";\nimport { installTimerFunctions, pick } from \"../util.js\";\nimport { Emitter } from \"@socket.io/component-emitter\";\nimport { Polling } from \"./polling.js\";\n/**\n * Empty function\n */\nfunction empty() { }\nconst hasXHR2 = (function () {\n    const xhr = new XMLHttpRequest({\n        xdomain: false\n    });\n    return null != xhr.responseType;\n})();\nexport class XHR extends Polling {\n    /**\n     * XHR Polling constructor.\n     *\n     * @param {Object} opts\n     * @api public\n     */\n    constructor(opts) {\n        super(opts);\n        if (typeof location !== \"undefined\") {\n            const isSSL = \"https:\" === location.protocol;\n            let port = location.port;\n            // some user agents have empty `location.port`\n            if (!port) {\n                port = isSSL ? \"443\" : \"80\";\n            }\n            this.xd =\n                (typeof location !== \"undefined\" &&\n                    opts.hostname !== location.hostname) ||\n                    port !== opts.port;\n            this.xs = opts.secure !== isSSL;\n        }\n        /**\n         * XHR supports binary\n         */\n        const forceBase64 = opts && opts.forceBase64;\n        this.supportsBinary = hasXHR2 && !forceBase64;\n    }\n    /**\n     * Creates a request.\n     *\n     * @param {String} method\n     * @api private\n     */\n    request(opts = {}) {\n        Object.assign(opts, { xd: this.xd, xs: this.xs }, this.opts);\n        return new Request(this.uri(), opts);\n    }\n    /**\n     * Sends data.\n     *\n     * @param {String} data to send.\n     * @param {Function} called upon flush.\n     * @api private\n     */\n    doWrite(data, fn) {\n        const req = this.request({\n            method: \"POST\",\n            data: data\n        });\n        req.on(\"success\", fn);\n        req.on(\"error\", err => {\n            this.onError(\"xhr post error\", err);\n        });\n    }\n    /**\n     * Starts a poll cycle.\n     *\n     * @api private\n     */\n    doPoll() {\n        const req = this.request();\n        req.on(\"data\", this.onData.bind(this));\n        req.on(\"error\", err => {\n            this.onError(\"xhr poll error\", err);\n        });\n        this.pollXhr = req;\n    }\n}\nexport class Request extends Emitter {\n    /**\n     * Request constructor\n     *\n     * @param {Object} options\n     * @api public\n     */\n    constructor(uri, opts) {\n        super();\n        installTimerFunctions(this, opts);\n        this.opts = opts;\n        this.method = opts.method || \"GET\";\n        this.uri = uri;\n        this.async = false !== opts.async;\n        this.data = undefined !== opts.data ? opts.data : null;\n        this.create();\n    }\n    /**\n     * Creates the XHR object and sends the request.\n     *\n     * @api private\n     */\n    create() {\n        const opts = pick(this.opts, \"agent\", \"pfx\", \"key\", \"passphrase\", \"cert\", \"ca\", \"ciphers\", \"rejectUnauthorized\", \"autoUnref\");\n        opts.xdomain = !!this.opts.xd;\n        opts.xscheme = !!this.opts.xs;\n        const xhr = (this.xhr = new XMLHttpRequest(opts));\n        try {\n            xhr.open(this.method, this.uri, this.async);\n            try {\n                if (this.opts.extraHeaders) {\n                    xhr.setDisableHeaderCheck && xhr.setDisableHeaderCheck(true);\n                    for (let i in this.opts.extraHeaders) {\n                        if (this.opts.extraHeaders.hasOwnProperty(i)) {\n                            xhr.setRequestHeader(i, this.opts.extraHeaders[i]);\n                        }\n                    }\n                }\n            }\n            catch (e) { }\n            if (\"POST\" === this.method) {\n                try {\n                    xhr.setRequestHeader(\"Content-type\", \"text/plain;charset=UTF-8\");\n                }\n                catch (e) { }\n            }\n            try {\n                xhr.setRequestHeader(\"Accept\", \"*/*\");\n            }\n            catch (e) { }\n            // ie6 check\n            if (\"withCredentials\" in xhr) {\n                xhr.withCredentials = this.opts.withCredentials;\n            }\n            if (this.opts.requestTimeout) {\n                xhr.timeout = this.opts.requestTimeout;\n            }\n            xhr.onreadystatechange = () => {\n                if (4 !== xhr.readyState)\n                    return;\n                if (200 === xhr.status || 1223 === xhr.status) {\n                    this.onLoad();\n                }\n                else {\n                    // make sure the `error` event handler that's user-set\n                    // does not throw in the same tick and gets caught here\n                    this.setTimeoutFn(() => {\n                        this.onError(typeof xhr.status === \"number\" ? xhr.status : 0);\n                    }, 0);\n                }\n            };\n            xhr.send(this.data);\n        }\n        catch (e) {\n            // Need to defer since .create() is called directly from the constructor\n            // and thus the 'error' event can only be only bound *after* this exception\n            // occurs.  Therefore, also, we cannot throw here at all.\n            this.setTimeoutFn(() => {\n                this.onError(e);\n            }, 0);\n            return;\n        }\n        if (typeof document !== \"undefined\") {\n            this.index = Request.requestsCount++;\n            Request.requests[this.index] = this;\n        }\n    }\n    /**\n     * Called upon successful response.\n     *\n     * @api private\n     */\n    onSuccess() {\n        this.emit(\"success\");\n        this.cleanup();\n    }\n    /**\n     * Called if we have data.\n     *\n     * @api private\n     */\n    onData(data) {\n        this.emit(\"data\", data);\n        this.onSuccess();\n    }\n    /**\n     * Called upon error.\n     *\n     * @api private\n     */\n    onError(err) {\n        this.emit(\"error\", err);\n        this.cleanup(true);\n    }\n    /**\n     * Cleans up house.\n     *\n     * @api private\n     */\n    cleanup(fromError) {\n        if (\"undefined\" === typeof this.xhr || null === this.xhr) {\n            return;\n        }\n        this.xhr.onreadystatechange = empty;\n        if (fromError) {\n            try {\n                this.xhr.abort();\n            }\n            catch (e) { }\n        }\n        if (typeof document !== \"undefined\") {\n            delete Request.requests[this.index];\n        }\n        this.xhr = null;\n    }\n    /**\n     * Called upon load.\n     *\n     * @api private\n     */\n    onLoad() {\n        const data = this.xhr.responseText;\n        if (data !== null) {\n            this.onData(data);\n        }\n    }\n    /**\n     * Aborts the request.\n     *\n     * @api public\n     */\n    abort() {\n        this.cleanup();\n    }\n}\nRequest.requestsCount = 0;\nRequest.requests = {};\n/**\n * Aborts pending requests when unloading the window. This is needed to prevent\n * memory leaks (e.g. when using IE) and to ensure that no spurious error is\n * emitted.\n */\nif (typeof document !== \"undefined\") {\n    // @ts-ignore\n    if (typeof attachEvent === \"function\") {\n        // @ts-ignore\n        attachEvent(\"onunload\", unloadHandler);\n    }\n    else if (typeof addEventListener === \"function\") {\n        const terminationEvent = \"onpagehide\" in globalThis ? \"pagehide\" : \"unload\";\n        addEventListener(terminationEvent, unloadHandler, false);\n    }\n}\nfunction unloadHandler() {\n    for (let i in Request.requests) {\n        if (Request.requests.hasOwnProperty(i)) {\n            Request.requests[i].abort();\n        }\n    }\n}\n","import globalThis from \"../globalThis.js\";\nexport const nextTick = (() => {\n    const isPromiseAvailable = typeof Promise === \"function\" && typeof Promise.resolve === \"function\";\n    if (isPromiseAvailable) {\n        return cb => Promise.resolve().then(cb);\n    }\n    else {\n        return (cb, setTimeoutFn) => setTimeoutFn(cb, 0);\n    }\n})();\nexport const WebSocket = globalThis.WebSocket || globalThis.MozWebSocket;\nexport const usingBrowserWebSocket = true;\nexport const defaultBinaryType = \"arraybuffer\";\n","import { Transport } from \"../transport.js\";\nimport parseqs from \"parseqs\";\nimport yeast from \"yeast\";\nimport { pick } from \"../util.js\";\nimport { defaultBinaryType, nextTick, usingBrowserWebSocket, WebSocket } from \"./websocket-constructor.js\";\nimport { encodePacket } from \"engine.io-parser\";\n// detect ReactNative environment\nconst isReactNative = typeof navigator !== \"undefined\" &&\n    typeof navigator.product === \"string\" &&\n    navigator.product.toLowerCase() === \"reactnative\";\nexport class WS extends Transport {\n    /**\n     * WebSocket transport constructor.\n     *\n     * @api {Object} connection options\n     * @api public\n     */\n    constructor(opts) {\n        super(opts);\n        this.supportsBinary = !opts.forceBase64;\n    }\n    /**\n     * Transport name.\n     *\n     * @api public\n     */\n    get name() {\n        return \"websocket\";\n    }\n    /**\n     * Opens socket.\n     *\n     * @api private\n     */\n    doOpen() {\n        if (!this.check()) {\n            // let probe timeout\n            return;\n        }\n        const uri = this.uri();\n        const protocols = this.opts.protocols;\n        // React Native only supports the 'headers' option, and will print a warning if anything else is passed\n        const opts = isReactNative\n            ? {}\n            : pick(this.opts, \"agent\", \"perMessageDeflate\", \"pfx\", \"key\", \"passphrase\", \"cert\", \"ca\", \"ciphers\", \"rejectUnauthorized\", \"localAddress\", \"protocolVersion\", \"origin\", \"maxPayload\", \"family\", \"checkServerIdentity\");\n        if (this.opts.extraHeaders) {\n            opts.headers = this.opts.extraHeaders;\n        }\n        try {\n            this.ws =\n                usingBrowserWebSocket && !isReactNative\n                    ? protocols\n                        ? new WebSocket(uri, protocols)\n                        : new WebSocket(uri)\n                    : new WebSocket(uri, protocols, opts);\n        }\n        catch (err) {\n            return this.emit(\"error\", err);\n        }\n        this.ws.binaryType = this.socket.binaryType || defaultBinaryType;\n        this.addEventListeners();\n    }\n    /**\n     * Adds event listeners to the socket\n     *\n     * @api private\n     */\n    addEventListeners() {\n        this.ws.onopen = () => {\n            if (this.opts.autoUnref) {\n                this.ws._socket.unref();\n            }\n            this.onOpen();\n        };\n        this.ws.onclose = this.onClose.bind(this);\n        this.ws.onmessage = ev => this.onData(ev.data);\n        this.ws.onerror = e => this.onError(\"websocket error\", e);\n    }\n    /**\n     * Writes data to socket.\n     *\n     * @param {Array} array of packets.\n     * @api private\n     */\n    write(packets) {\n        this.writable = false;\n        // encodePacket efficient as it uses WS framing\n        // no need for encodePayload\n        for (let i = 0; i < packets.length; i++) {\n            const packet = packets[i];\n            const lastPacket = i === packets.length - 1;\n            encodePacket(packet, this.supportsBinary, data => {\n                // always create a new object (GH-437)\n                const opts = {};\n                if (!usingBrowserWebSocket) {\n                    if (packet.options) {\n                        opts.compress = packet.options.compress;\n                    }\n                    if (this.opts.perMessageDeflate) {\n                        const len = \"string\" === typeof data ? Buffer.byteLength(data) : data.length;\n                        if (len < this.opts.perMessageDeflate.threshold) {\n                            opts.compress = false;\n                        }\n                    }\n                }\n                // Sometimes the websocket has already been closed but the browser didn't\n                // have a chance of informing us about it yet, in that case send will\n                // throw an error\n                try {\n                    if (usingBrowserWebSocket) {\n                        // TypeError is thrown when passing the second argument on Safari\n                        this.ws.send(data);\n                    }\n                    else {\n                        this.ws.send(data, opts);\n                    }\n                }\n                catch (e) {\n                }\n                if (lastPacket) {\n                    // fake drain\n                    // defer to next tick to allow Socket to clear writeBuffer\n                    nextTick(() => {\n                        this.writable = true;\n                        this.emit(\"drain\");\n                    }, this.setTimeoutFn);\n                }\n            });\n        }\n    }\n    /**\n     * Closes socket.\n     *\n     * @api private\n     */\n    doClose() {\n        if (typeof this.ws !== \"undefined\") {\n            this.ws.close();\n            this.ws = null;\n        }\n    }\n    /**\n     * Generates uri for connection.\n     *\n     * @api private\n     */\n    uri() {\n        let query = this.query || {};\n        const schema = this.opts.secure ? \"wss\" : \"ws\";\n        let port = \"\";\n        // avoid port if default for schema\n        if (this.opts.port &&\n            ((\"wss\" === schema && Number(this.opts.port) !== 443) ||\n                (\"ws\" === schema && Number(this.opts.port) !== 80))) {\n            port = \":\" + this.opts.port;\n        }\n        // append timestamp to URI\n        if (this.opts.timestampRequests) {\n            query[this.opts.timestampParam] = yeast();\n        }\n        // communicate binary support capabilities\n        if (!this.supportsBinary) {\n            query.b64 = 1;\n        }\n        const encodedQuery = parseqs.encode(query);\n        const ipv6 = this.opts.hostname.indexOf(\":\") !== -1;\n        return (schema +\n            \"://\" +\n            (ipv6 ? \"[\" + this.opts.hostname + \"]\" : this.opts.hostname) +\n            port +\n            this.opts.path +\n            (encodedQuery.length ? \"?\" + encodedQuery : \"\"));\n    }\n    /**\n     * Feature detection for WebSocket.\n     *\n     * @return {Boolean} whether this transport is available.\n     * @api public\n     */\n    check() {\n        return (!!WebSocket &&\n            !(\"__initialize\" in WebSocket && this.name === WS.prototype.name));\n    }\n}\n","import { XHR } from \"./polling-xhr.js\";\nimport { WS } from \"./websocket.js\";\nexport const transports = {\n    websocket: WS,\n    polling: XHR\n};\n","import { transports } from \"./transports/index.js\";\nimport { installTimerFunctions } from \"./util.js\";\nimport parseqs from \"parseqs\";\nimport parseuri from \"parseuri\";\nimport { Emitter } from \"@socket.io/component-emitter\";\nimport { protocol } from \"engine.io-parser\";\nexport class Socket extends Emitter {\n    /**\n     * Socket constructor.\n     *\n     * @param {String|Object} uri or options\n     * @param {Object} opts - options\n     * @api public\n     */\n    constructor(uri, opts = {}) {\n        super();\n        if (uri && \"object\" === typeof uri) {\n            opts = uri;\n            uri = null;\n        }\n        if (uri) {\n            uri = parseuri(uri);\n            opts.hostname = uri.host;\n            opts.secure = uri.protocol === \"https\" || uri.protocol === \"wss\";\n            opts.port = uri.port;\n            if (uri.query)\n                opts.query = uri.query;\n        }\n        else if (opts.host) {\n            opts.hostname = parseuri(opts.host).host;\n        }\n        installTimerFunctions(this, opts);\n        this.secure =\n            null != opts.secure\n                ? opts.secure\n                : typeof location !== \"undefined\" && \"https:\" === location.protocol;\n        if (opts.hostname && !opts.port) {\n            // if no port is specified manually, use the protocol default\n            opts.port = this.secure ? \"443\" : \"80\";\n        }\n        this.hostname =\n            opts.hostname ||\n                (typeof location !== \"undefined\" ? location.hostname : \"localhost\");\n        this.port =\n            opts.port ||\n                (typeof location !== \"undefined\" && location.port\n                    ? location.port\n                    : this.secure\n                        ? \"443\"\n                        : \"80\");\n        this.transports = opts.transports || [\"polling\", \"websocket\"];\n        this.readyState = \"\";\n        this.writeBuffer = [];\n        this.prevBufferLen = 0;\n        this.opts = Object.assign({\n            path: \"/engine.io\",\n            agent: false,\n            withCredentials: false,\n            upgrade: true,\n            timestampParam: \"t\",\n            rememberUpgrade: false,\n            rejectUnauthorized: true,\n            perMessageDeflate: {\n                threshold: 1024\n            },\n            transportOptions: {},\n            closeOnBeforeunload: true\n        }, opts);\n        this.opts.path = this.opts.path.replace(/\\/$/, \"\") + \"/\";\n        if (typeof this.opts.query === \"string\") {\n            this.opts.query = parseqs.decode(this.opts.query);\n        }\n        // set on handshake\n        this.id = null;\n        this.upgrades = null;\n        this.pingInterval = null;\n        this.pingTimeout = null;\n        // set on heartbeat\n        this.pingTimeoutTimer = null;\n        if (typeof addEventListener === \"function\") {\n            if (this.opts.closeOnBeforeunload) {\n                // Firefox closes the connection when the \"beforeunload\" event is emitted but not Chrome. This event listener\n                // ensures every browser behaves the same (no \"disconnect\" event at the Socket.IO level when the page is\n                // closed/reloaded)\n                addEventListener(\"beforeunload\", () => {\n                    if (this.transport) {\n                        // silently close the transport\n                        this.transport.removeAllListeners();\n                        this.transport.close();\n                    }\n                }, false);\n            }\n            if (this.hostname !== \"localhost\") {\n                this.offlineEventListener = () => {\n                    this.onClose(\"transport close\");\n                };\n                addEventListener(\"offline\", this.offlineEventListener, false);\n            }\n        }\n        this.open();\n    }\n    /**\n     * Creates transport of the given type.\n     *\n     * @param {String} transport name\n     * @return {Transport}\n     * @api private\n     */\n    createTransport(name) {\n        const query = clone(this.opts.query);\n        // append engine.io protocol identifier\n        query.EIO = protocol;\n        // transport name\n        query.transport = name;\n        // session id if we already have one\n        if (this.id)\n            query.sid = this.id;\n        const opts = Object.assign({}, this.opts.transportOptions[name], this.opts, {\n            query,\n            socket: this,\n            hostname: this.hostname,\n            secure: this.secure,\n            port: this.port\n        });\n        return new transports[name](opts);\n    }\n    /**\n     * Initializes transport to use and starts probe.\n     *\n     * @api private\n     */\n    open() {\n        let transport;\n        if (this.opts.rememberUpgrade &&\n            Socket.priorWebsocketSuccess &&\n            this.transports.indexOf(\"websocket\") !== -1) {\n            transport = \"websocket\";\n        }\n        else if (0 === this.transports.length) {\n            // Emit error on next tick so it can be listened to\n            this.setTimeoutFn(() => {\n                this.emitReserved(\"error\", \"No transports available\");\n            }, 0);\n            return;\n        }\n        else {\n            transport = this.transports[0];\n        }\n        this.readyState = \"opening\";\n        // Retry with the next transport if the transport is disabled (jsonp: false)\n        try {\n            transport = this.createTransport(transport);\n        }\n        catch (e) {\n            this.transports.shift();\n            this.open();\n            return;\n        }\n        transport.open();\n        this.setTransport(transport);\n    }\n    /**\n     * Sets the current transport. Disables the existing one (if any).\n     *\n     * @api private\n     */\n    setTransport(transport) {\n        if (this.transport) {\n            this.transport.removeAllListeners();\n        }\n        // set up transport\n        this.transport = transport;\n        // set up transport listeners\n        transport\n            .on(\"drain\", this.onDrain.bind(this))\n            .on(\"packet\", this.onPacket.bind(this))\n            .on(\"error\", this.onError.bind(this))\n            .on(\"close\", () => {\n            this.onClose(\"transport close\");\n        });\n    }\n    /**\n     * Probes a transport.\n     *\n     * @param {String} transport name\n     * @api private\n     */\n    probe(name) {\n        let transport = this.createTransport(name);\n        let failed = false;\n        Socket.priorWebsocketSuccess = false;\n        const onTransportOpen = () => {\n            if (failed)\n                return;\n            transport.send([{ type: \"ping\", data: \"probe\" }]);\n            transport.once(\"packet\", msg => {\n                if (failed)\n                    return;\n                if (\"pong\" === msg.type && \"probe\" === msg.data) {\n                    this.upgrading = true;\n                    this.emitReserved(\"upgrading\", transport);\n                    if (!transport)\n                        return;\n                    Socket.priorWebsocketSuccess = \"websocket\" === transport.name;\n                    this.transport.pause(() => {\n                        if (failed)\n                            return;\n                        if (\"closed\" === this.readyState)\n                            return;\n                        cleanup();\n                        this.setTransport(transport);\n                        transport.send([{ type: \"upgrade\" }]);\n                        this.emitReserved(\"upgrade\", transport);\n                        transport = null;\n                        this.upgrading = false;\n                        this.flush();\n                    });\n                }\n                else {\n                    const err = new Error(\"probe error\");\n                    // @ts-ignore\n                    err.transport = transport.name;\n                    this.emitReserved(\"upgradeError\", err);\n                }\n            });\n        };\n        function freezeTransport() {\n            if (failed)\n                return;\n            // Any callback called by transport should be ignored since now\n            failed = true;\n            cleanup();\n            transport.close();\n            transport = null;\n        }\n        // Handle any error that happens while probing\n        const onerror = err => {\n            const error = new Error(\"probe error: \" + err);\n            // @ts-ignore\n            error.transport = transport.name;\n            freezeTransport();\n            this.emitReserved(\"upgradeError\", error);\n        };\n        function onTransportClose() {\n            onerror(\"transport closed\");\n        }\n        // When the socket is closed while we're probing\n        function onclose() {\n            onerror(\"socket closed\");\n        }\n        // When the socket is upgraded while we're probing\n        function onupgrade(to) {\n            if (transport && to.name !== transport.name) {\n                freezeTransport();\n            }\n        }\n        // Remove all listeners on the transport and on self\n        const cleanup = () => {\n            transport.removeListener(\"open\", onTransportOpen);\n            transport.removeListener(\"error\", onerror);\n            transport.removeListener(\"close\", onTransportClose);\n            this.off(\"close\", onclose);\n            this.off(\"upgrading\", onupgrade);\n        };\n        transport.once(\"open\", onTransportOpen);\n        transport.once(\"error\", onerror);\n        transport.once(\"close\", onTransportClose);\n        this.once(\"close\", onclose);\n        this.once(\"upgrading\", onupgrade);\n        transport.open();\n    }\n    /**\n     * Called when connection is deemed open.\n     *\n     * @api private\n     */\n    onOpen() {\n        this.readyState = \"open\";\n        Socket.priorWebsocketSuccess = \"websocket\" === this.transport.name;\n        this.emitReserved(\"open\");\n        this.flush();\n        // we check for `readyState` in case an `open`\n        // listener already closed the socket\n        if (\"open\" === this.readyState &&\n            this.opts.upgrade &&\n            this.transport.pause) {\n            let i = 0;\n            const l = this.upgrades.length;\n            for (; i < l; i++) {\n                this.probe(this.upgrades[i]);\n            }\n        }\n    }\n    /**\n     * Handles a packet.\n     *\n     * @api private\n     */\n    onPacket(packet) {\n        if (\"opening\" === this.readyState ||\n            \"open\" === this.readyState ||\n            \"closing\" === this.readyState) {\n            this.emitReserved(\"packet\", packet);\n            // Socket is live - any packet counts\n            this.emitReserved(\"heartbeat\");\n            switch (packet.type) {\n                case \"open\":\n                    this.onHandshake(JSON.parse(packet.data));\n                    break;\n                case \"ping\":\n                    this.resetPingTimeout();\n                    this.sendPacket(\"pong\");\n                    this.emitReserved(\"ping\");\n                    this.emitReserved(\"pong\");\n                    break;\n                case \"error\":\n                    const err = new Error(\"server error\");\n                    // @ts-ignore\n                    err.code = packet.data;\n                    this.onError(err);\n                    break;\n                case \"message\":\n                    this.emitReserved(\"data\", packet.data);\n                    this.emitReserved(\"message\", packet.data);\n                    break;\n            }\n        }\n        else {\n        }\n    }\n    /**\n     * Called upon handshake completion.\n     *\n     * @param {Object} data - handshake obj\n     * @api private\n     */\n    onHandshake(data) {\n        this.emitReserved(\"handshake\", data);\n        this.id = data.sid;\n        this.transport.query.sid = data.sid;\n        this.upgrades = this.filterUpgrades(data.upgrades);\n        this.pingInterval = data.pingInterval;\n        this.pingTimeout = data.pingTimeout;\n        this.onOpen();\n        // In case open handler closes socket\n        if (\"closed\" === this.readyState)\n            return;\n        this.resetPingTimeout();\n    }\n    /**\n     * Sets and resets ping timeout timer based on server pings.\n     *\n     * @api private\n     */\n    resetPingTimeout() {\n        this.clearTimeoutFn(this.pingTimeoutTimer);\n        this.pingTimeoutTimer = this.setTimeoutFn(() => {\n            this.onClose(\"ping timeout\");\n        }, this.pingInterval + this.pingTimeout);\n        if (this.opts.autoUnref) {\n            this.pingTimeoutTimer.unref();\n        }\n    }\n    /**\n     * Called on `drain` event\n     *\n     * @api private\n     */\n    onDrain() {\n        this.writeBuffer.splice(0, this.prevBufferLen);\n        // setting prevBufferLen = 0 is very important\n        // for example, when upgrading, upgrade packet is sent over,\n        // and a nonzero prevBufferLen could cause problems on `drain`\n        this.prevBufferLen = 0;\n        if (0 === this.writeBuffer.length) {\n            this.emitReserved(\"drain\");\n        }\n        else {\n            this.flush();\n        }\n    }\n    /**\n     * Flush write buffers.\n     *\n     * @api private\n     */\n    flush() {\n        if (\"closed\" !== this.readyState &&\n            this.transport.writable &&\n            !this.upgrading &&\n            this.writeBuffer.length) {\n            this.transport.send(this.writeBuffer);\n            // keep track of current length of writeBuffer\n            // splice writeBuffer and callbackBuffer on `drain`\n            this.prevBufferLen = this.writeBuffer.length;\n            this.emitReserved(\"flush\");\n        }\n    }\n    /**\n     * Sends a message.\n     *\n     * @param {String} message.\n     * @param {Function} callback function.\n     * @param {Object} options.\n     * @return {Socket} for chaining.\n     * @api public\n     */\n    write(msg, options, fn) {\n        this.sendPacket(\"message\", msg, options, fn);\n        return this;\n    }\n    send(msg, options, fn) {\n        this.sendPacket(\"message\", msg, options, fn);\n        return this;\n    }\n    /**\n     * Sends a packet.\n     *\n     * @param {String} packet type.\n     * @param {String} data.\n     * @param {Object} options.\n     * @param {Function} callback function.\n     * @api private\n     */\n    sendPacket(type, data, options, fn) {\n        if (\"function\" === typeof data) {\n            fn = data;\n            data = undefined;\n        }\n        if (\"function\" === typeof options) {\n            fn = options;\n            options = null;\n        }\n        if (\"closing\" === this.readyState || \"closed\" === this.readyState) {\n            return;\n        }\n        options = options || {};\n        options.compress = false !== options.compress;\n        const packet = {\n            type: type,\n            data: data,\n            options: options\n        };\n        this.emitReserved(\"packetCreate\", packet);\n        this.writeBuffer.push(packet);\n        if (fn)\n            this.once(\"flush\", fn);\n        this.flush();\n    }\n    /**\n     * Closes the connection.\n     *\n     * @api public\n     */\n    close() {\n        const close = () => {\n            this.onClose(\"forced close\");\n            this.transport.close();\n        };\n        const cleanupAndClose = () => {\n            this.off(\"upgrade\", cleanupAndClose);\n            this.off(\"upgradeError\", cleanupAndClose);\n            close();\n        };\n        const waitForUpgrade = () => {\n            // wait for upgrade to finish since we can't send packets while pausing a transport\n            this.once(\"upgrade\", cleanupAndClose);\n            this.once(\"upgradeError\", cleanupAndClose);\n        };\n        if (\"opening\" === this.readyState || \"open\" === this.readyState) {\n            this.readyState = \"closing\";\n            if (this.writeBuffer.length) {\n                this.once(\"drain\", () => {\n                    if (this.upgrading) {\n                        waitForUpgrade();\n                    }\n                    else {\n                        close();\n                    }\n                });\n            }\n            else if (this.upgrading) {\n                waitForUpgrade();\n            }\n            else {\n                close();\n            }\n        }\n        return this;\n    }\n    /**\n     * Called upon transport error\n     *\n     * @api private\n     */\n    onError(err) {\n        Socket.priorWebsocketSuccess = false;\n        this.emitReserved(\"error\", err);\n        this.onClose(\"transport error\", err);\n    }\n    /**\n     * Called upon transport close.\n     *\n     * @api private\n     */\n    onClose(reason, desc) {\n        if (\"opening\" === this.readyState ||\n            \"open\" === this.readyState ||\n            \"closing\" === this.readyState) {\n            // clear timers\n            this.clearTimeoutFn(this.pingTimeoutTimer);\n            // stop event from firing again for transport\n            this.transport.removeAllListeners(\"close\");\n            // ensure transport won't stay open\n            this.transport.close();\n            // ignore further transport communication\n            this.transport.removeAllListeners();\n            if (typeof removeEventListener === \"function\") {\n                removeEventListener(\"offline\", this.offlineEventListener, false);\n            }\n            // set ready state\n            this.readyState = \"closed\";\n            // clear session id\n            this.id = null;\n            // emit close event\n            this.emitReserved(\"close\", reason, desc);\n            // clean buffers after, so users can still\n            // grab the buffers on `close` event\n            this.writeBuffer = [];\n            this.prevBufferLen = 0;\n        }\n    }\n    /**\n     * Filters upgrades, returning only those matching client transports.\n     *\n     * @param {Array} server upgrades\n     * @api private\n     *\n     */\n    filterUpgrades(upgrades) {\n        const filteredUpgrades = [];\n        let i = 0;\n        const j = upgrades.length;\n        for (; i < j; i++) {\n            if (~this.transports.indexOf(upgrades[i]))\n                filteredUpgrades.push(upgrades[i]);\n        }\n        return filteredUpgrades;\n    }\n}\nSocket.protocol = protocol;\nfunction clone(obj) {\n    const o = {};\n    for (let i in obj) {\n        if (obj.hasOwnProperty(i)) {\n            o[i] = obj[i];\n        }\n    }\n    return o;\n}\n","const withNativeArrayBuffer = typeof ArrayBuffer === \"function\";\nconst isView = (obj) => {\n    return typeof ArrayBuffer.isView === \"function\"\n        ? ArrayBuffer.isView(obj)\n        : obj.buffer instanceof ArrayBuffer;\n};\nconst toString = Object.prototype.toString;\nconst withNativeBlob = typeof Blob === \"function\" ||\n    (typeof Blob !== \"undefined\" &&\n        toString.call(Blob) === \"[object BlobConstructor]\");\nconst withNativeFile = typeof File === \"function\" ||\n    (typeof File !== \"undefined\" &&\n        toString.call(File) === \"[object FileConstructor]\");\n/**\n * Returns true if obj is a Buffer, an ArrayBuffer, a Blob or a File.\n *\n * @private\n */\nexport function isBinary(obj) {\n    return ((withNativeArrayBuffer && (obj instanceof ArrayBuffer || isView(obj))) ||\n        (withNativeBlob && obj instanceof Blob) ||\n        (withNativeFile && obj instanceof File));\n}\nexport function hasBinary(obj, toJSON) {\n    if (!obj || typeof obj !== \"object\") {\n        return false;\n    }\n    if (Array.isArray(obj)) {\n        for (let i = 0, l = obj.length; i < l; i++) {\n            if (hasBinary(obj[i])) {\n                return true;\n            }\n        }\n        return false;\n    }\n    if (isBinary(obj)) {\n        return true;\n    }\n    if (obj.toJSON &&\n        typeof obj.toJSON === \"function\" &&\n        arguments.length === 1) {\n        return hasBinary(obj.toJSON(), true);\n    }\n    for (const key in obj) {\n        if (Object.prototype.hasOwnProperty.call(obj, key) && hasBinary(obj[key])) {\n            return true;\n        }\n    }\n    return false;\n}\n","import { isBinary } from \"./is-binary.js\";\n/**\n * Replaces every Buffer | ArrayBuffer | Blob | File in packet with a numbered placeholder.\n *\n * @param {Object} packet - socket.io event packet\n * @return {Object} with deconstructed packet and list of buffers\n * @public\n */\nexport function deconstructPacket(packet) {\n    const buffers = [];\n    const packetData = packet.data;\n    const pack = packet;\n    pack.data = _deconstructPacket(packetData, buffers);\n    pack.attachments = buffers.length; // number of binary 'attachments'\n    return { packet: pack, buffers: buffers };\n}\nfunction _deconstructPacket(data, buffers) {\n    if (!data)\n        return data;\n    if (isBinary(data)) {\n        const placeholder = { _placeholder: true, num: buffers.length };\n        buffers.push(data);\n        return placeholder;\n    }\n    else if (Array.isArray(data)) {\n        const newData = new Array(data.length);\n        for (let i = 0; i < data.length; i++) {\n            newData[i] = _deconstructPacket(data[i], buffers);\n        }\n        return newData;\n    }\n    else if (typeof data === \"object\" && !(data instanceof Date)) {\n        const newData = {};\n        for (const key in data) {\n            if (data.hasOwnProperty(key)) {\n                newData[key] = _deconstructPacket(data[key], buffers);\n            }\n        }\n        return newData;\n    }\n    return data;\n}\n/**\n * Reconstructs a binary packet from its placeholder packet and buffers\n *\n * @param {Object} packet - event packet with placeholders\n * @param {Array} buffers - binary buffers to put in placeholder positions\n * @return {Object} reconstructed packet\n * @public\n */\nexport function reconstructPacket(packet, buffers) {\n    packet.data = _reconstructPacket(packet.data, buffers);\n    packet.attachments = undefined; // no longer useful\n    return packet;\n}\nfunction _reconstructPacket(data, buffers) {\n    if (!data)\n        return data;\n    if (data && data._placeholder) {\n        return buffers[data.num]; // appropriate buffer (should be natural order anyway)\n    }\n    else if (Array.isArray(data)) {\n        for (let i = 0; i < data.length; i++) {\n            data[i] = _reconstructPacket(data[i], buffers);\n        }\n    }\n    else if (typeof data === \"object\") {\n        for (const key in data) {\n            if (data.hasOwnProperty(key)) {\n                data[key] = _reconstructPacket(data[key], buffers);\n            }\n        }\n    }\n    return data;\n}\n","import { Emitter } from \"@socket.io/component-emitter\";\nimport { deconstructPacket, reconstructPacket } from \"./binary.js\";\nimport { isBinary, hasBinary } from \"./is-binary.js\";\n/**\n * Protocol version.\n *\n * @public\n */\nexport const protocol = 5;\nexport var PacketType;\n(function (PacketType) {\n    PacketType[PacketType[\"CONNECT\"] = 0] = \"CONNECT\";\n    PacketType[PacketType[\"DISCONNECT\"] = 1] = \"DISCONNECT\";\n    PacketType[PacketType[\"EVENT\"] = 2] = \"EVENT\";\n    PacketType[PacketType[\"ACK\"] = 3] = \"ACK\";\n    PacketType[PacketType[\"CONNECT_ERROR\"] = 4] = \"CONNECT_ERROR\";\n    PacketType[PacketType[\"BINARY_EVENT\"] = 5] = \"BINARY_EVENT\";\n    PacketType[PacketType[\"BINARY_ACK\"] = 6] = \"BINARY_ACK\";\n})(PacketType || (PacketType = {}));\n/**\n * A socket.io Encoder instance\n */\nexport class Encoder {\n    /**\n     * Encode a packet as a single string if non-binary, or as a\n     * buffer sequence, depending on packet type.\n     *\n     * @param {Object} obj - packet object\n     */\n    encode(obj) {\n        if (obj.type === PacketType.EVENT || obj.type === PacketType.ACK) {\n            if (hasBinary(obj)) {\n                obj.type =\n                    obj.type === PacketType.EVENT\n                        ? PacketType.BINARY_EVENT\n                        : PacketType.BINARY_ACK;\n                return this.encodeAsBinary(obj);\n            }\n        }\n        return [this.encodeAsString(obj)];\n    }\n    /**\n     * Encode packet as string.\n     */\n    encodeAsString(obj) {\n        // first is type\n        let str = \"\" + obj.type;\n        // attachments if we have them\n        if (obj.type === PacketType.BINARY_EVENT ||\n            obj.type === PacketType.BINARY_ACK) {\n            str += obj.attachments + \"-\";\n        }\n        // if we have a namespace other than `/`\n        // we append it followed by a comma `,`\n        if (obj.nsp && \"/\" !== obj.nsp) {\n            str += obj.nsp + \",\";\n        }\n        // immediately followed by the id\n        if (null != obj.id) {\n            str += obj.id;\n        }\n        // json data\n        if (null != obj.data) {\n            str += JSON.stringify(obj.data);\n        }\n        return str;\n    }\n    /**\n     * Encode packet as 'buffer sequence' by removing blobs, and\n     * deconstructing packet into object with placeholders and\n     * a list of buffers.\n     */\n    encodeAsBinary(obj) {\n        const deconstruction = deconstructPacket(obj);\n        const pack = this.encodeAsString(deconstruction.packet);\n        const buffers = deconstruction.buffers;\n        buffers.unshift(pack); // add packet info to beginning of data list\n        return buffers; // write all the buffers\n    }\n}\n/**\n * A socket.io Decoder instance\n *\n * @return {Object} decoder\n */\nexport class Decoder extends Emitter {\n    constructor() {\n        super();\n    }\n    /**\n     * Decodes an encoded packet string into packet JSON.\n     *\n     * @param {String} obj - encoded packet\n     */\n    add(obj) {\n        let packet;\n        if (typeof obj === \"string\") {\n            packet = this.decodeString(obj);\n            if (packet.type === PacketType.BINARY_EVENT ||\n                packet.type === PacketType.BINARY_ACK) {\n                // binary packet's json\n                this.reconstructor = new BinaryReconstructor(packet);\n                // no attachments, labeled binary but no binary data to follow\n                if (packet.attachments === 0) {\n                    super.emitReserved(\"decoded\", packet);\n                }\n            }\n            else {\n                // non-binary full packet\n                super.emitReserved(\"decoded\", packet);\n            }\n        }\n        else if (isBinary(obj) || obj.base64) {\n            // raw binary data\n            if (!this.reconstructor) {\n                throw new Error(\"got binary data when not reconstructing a packet\");\n            }\n            else {\n                packet = this.reconstructor.takeBinaryData(obj);\n                if (packet) {\n                    // received final buffer\n                    this.reconstructor = null;\n                    super.emitReserved(\"decoded\", packet);\n                }\n            }\n        }\n        else {\n            throw new Error(\"Unknown type: \" + obj);\n        }\n    }\n    /**\n     * Decode a packet String (JSON data)\n     *\n     * @param {String} str\n     * @return {Object} packet\n     */\n    decodeString(str) {\n        let i = 0;\n        // look up type\n        const p = {\n            type: Number(str.charAt(0)),\n        };\n        if (PacketType[p.type] === undefined) {\n            throw new Error(\"unknown packet type \" + p.type);\n        }\n        // look up attachments if type binary\n        if (p.type === PacketType.BINARY_EVENT ||\n            p.type === PacketType.BINARY_ACK) {\n            const start = i + 1;\n            while (str.charAt(++i) !== \"-\" && i != str.length) { }\n            const buf = str.substring(start, i);\n            if (buf != Number(buf) || str.charAt(i) !== \"-\") {\n                throw new Error(\"Illegal attachments\");\n            }\n            p.attachments = Number(buf);\n        }\n        // look up namespace (if any)\n        if (\"/\" === str.charAt(i + 1)) {\n            const start = i + 1;\n            while (++i) {\n                const c = str.charAt(i);\n                if (\",\" === c)\n                    break;\n                if (i === str.length)\n                    break;\n            }\n            p.nsp = str.substring(start, i);\n        }\n        else {\n            p.nsp = \"/\";\n        }\n        // look up id\n        const next = str.charAt(i + 1);\n        if (\"\" !== next && Number(next) == next) {\n            const start = i + 1;\n            while (++i) {\n                const c = str.charAt(i);\n                if (null == c || Number(c) != c) {\n                    --i;\n                    break;\n                }\n                if (i === str.length)\n                    break;\n            }\n            p.id = Number(str.substring(start, i + 1));\n        }\n        // look up json data\n        if (str.charAt(++i)) {\n            const payload = tryParse(str.substr(i));\n            if (Decoder.isPayloadValid(p.type, payload)) {\n                p.data = payload;\n            }\n            else {\n                throw new Error(\"invalid payload\");\n            }\n        }\n        return p;\n    }\n    static isPayloadValid(type, payload) {\n        switch (type) {\n            case PacketType.CONNECT:\n                return typeof payload === \"object\";\n            case PacketType.DISCONNECT:\n                return payload === undefined;\n            case PacketType.CONNECT_ERROR:\n                return typeof payload === \"string\" || typeof payload === \"object\";\n            case PacketType.EVENT:\n            case PacketType.BINARY_EVENT:\n                return Array.isArray(payload) && payload.length > 0;\n            case PacketType.ACK:\n            case PacketType.BINARY_ACK:\n                return Array.isArray(payload);\n        }\n    }\n    /**\n     * Deallocates a parser's resources\n     */\n    destroy() {\n        if (this.reconstructor) {\n            this.reconstructor.finishedReconstruction();\n        }\n    }\n}\nfunction tryParse(str) {\n    try {\n        return JSON.parse(str);\n    }\n    catch (e) {\n        return false;\n    }\n}\n/**\n * A manager of a binary event's 'buffer sequence'. Should\n * be constructed whenever a packet of type BINARY_EVENT is\n * decoded.\n *\n * @param {Object} packet\n * @return {BinaryReconstructor} initialized reconstructor\n */\nclass BinaryReconstructor {\n    constructor(packet) {\n        this.packet = packet;\n        this.buffers = [];\n        this.reconPack = packet;\n    }\n    /**\n     * Method to be called when binary data received from connection\n     * after a BINARY_EVENT packet.\n     *\n     * @param {Buffer | ArrayBuffer} binData - the raw binary data received\n     * @return {null | Object} returns null if more binary data is expected or\n     *   a reconstructed packet object if all buffers have been received.\n     */\n    takeBinaryData(binData) {\n        this.buffers.push(binData);\n        if (this.buffers.length === this.reconPack.attachments) {\n            // done with buffer list\n            const packet = reconstructPacket(this.reconPack, this.buffers);\n            this.finishedReconstruction();\n            return packet;\n        }\n        return null;\n    }\n    /**\n     * Cleans up binary packet reconstruction variables.\n     */\n    finishedReconstruction() {\n        this.reconPack = null;\n        this.buffers = [];\n    }\n}\n","export function on(obj, ev, fn) {\n    obj.on(ev, fn);\n    return function subDestroy() {\n        obj.off(ev, fn);\n    };\n}\n","import { PacketType } from \"socket.io-parser\";\nimport { on } from \"./on.js\";\nimport { Emitter, } from \"@socket.io/component-emitter\";\n/**\n * Internal events.\n * These events can't be emitted by the user.\n */\nconst RESERVED_EVENTS = Object.freeze({\n    connect: 1,\n    connect_error: 1,\n    disconnect: 1,\n    disconnecting: 1,\n    // EventEmitter reserved events: https://nodejs.org/api/events.html#events_event_newlistener\n    newListener: 1,\n    removeListener: 1,\n});\nexport class Socket extends Emitter {\n    /**\n     * `Socket` constructor.\n     *\n     * @public\n     */\n    constructor(io, nsp, opts) {\n        super();\n        this.connected = false;\n        this.disconnected = true;\n        this.receiveBuffer = [];\n        this.sendBuffer = [];\n        this.ids = 0;\n        this.acks = {};\n        this.flags = {};\n        this.io = io;\n        this.nsp = nsp;\n        if (opts && opts.auth) {\n            this.auth = opts.auth;\n        }\n        if (this.io._autoConnect)\n            this.open();\n    }\n    /**\n     * Subscribe to open, close and packet events\n     *\n     * @private\n     */\n    subEvents() {\n        if (this.subs)\n            return;\n        const io = this.io;\n        this.subs = [\n            on(io, \"open\", this.onopen.bind(this)),\n            on(io, \"packet\", this.onpacket.bind(this)),\n            on(io, \"error\", this.onerror.bind(this)),\n            on(io, \"close\", this.onclose.bind(this)),\n        ];\n    }\n    /**\n     * Whether the Socket will try to reconnect when its Manager connects or reconnects\n     */\n    get active() {\n        return !!this.subs;\n    }\n    /**\n     * \"Opens\" the socket.\n     *\n     * @public\n     */\n    connect() {\n        if (this.connected)\n            return this;\n        this.subEvents();\n        if (!this.io[\"_reconnecting\"])\n            this.io.open(); // ensure open\n        if (\"open\" === this.io._readyState)\n            this.onopen();\n        return this;\n    }\n    /**\n     * Alias for connect()\n     */\n    open() {\n        return this.connect();\n    }\n    /**\n     * Sends a `message` event.\n     *\n     * @return self\n     * @public\n     */\n    send(...args) {\n        args.unshift(\"message\");\n        this.emit.apply(this, args);\n        return this;\n    }\n    /**\n     * Override `emit`.\n     * If the event is in `events`, it's emitted normally.\n     *\n     * @return self\n     * @public\n     */\n    emit(ev, ...args) {\n        if (RESERVED_EVENTS.hasOwnProperty(ev)) {\n            throw new Error('\"' + ev + '\" is a reserved event name');\n        }\n        args.unshift(ev);\n        const packet = {\n            type: PacketType.EVENT,\n            data: args,\n        };\n        packet.options = {};\n        packet.options.compress = this.flags.compress !== false;\n        // event ack callback\n        if (\"function\" === typeof args[args.length - 1]) {\n            const id = this.ids++;\n            const ack = args.pop();\n            this._registerAckCallback(id, ack);\n            packet.id = id;\n        }\n        const isTransportWritable = this.io.engine &&\n            this.io.engine.transport &&\n            this.io.engine.transport.writable;\n        const discardPacket = this.flags.volatile && (!isTransportWritable || !this.connected);\n        if (discardPacket) {\n        }\n        else if (this.connected) {\n            this.packet(packet);\n        }\n        else {\n            this.sendBuffer.push(packet);\n        }\n        this.flags = {};\n        return this;\n    }\n    /**\n     * @private\n     */\n    _registerAckCallback(id, ack) {\n        const timeout = this.flags.timeout;\n        if (timeout === undefined) {\n            this.acks[id] = ack;\n            return;\n        }\n        // @ts-ignore\n        const timer = this.io.setTimeoutFn(() => {\n            delete this.acks[id];\n            for (let i = 0; i < this.sendBuffer.length; i++) {\n                if (this.sendBuffer[i].id === id) {\n                    this.sendBuffer.splice(i, 1);\n                }\n            }\n            ack.call(this, new Error(\"operation has timed out\"));\n        }, timeout);\n        this.acks[id] = (...args) => {\n            // @ts-ignore\n            this.io.clearTimeoutFn(timer);\n            ack.apply(this, [null, ...args]);\n        };\n    }\n    /**\n     * Sends a packet.\n     *\n     * @param packet\n     * @private\n     */\n    packet(packet) {\n        packet.nsp = this.nsp;\n        this.io._packet(packet);\n    }\n    /**\n     * Called upon engine `open`.\n     *\n     * @private\n     */\n    onopen() {\n        if (typeof this.auth == \"function\") {\n            this.auth((data) => {\n                this.packet({ type: PacketType.CONNECT, data });\n            });\n        }\n        else {\n            this.packet({ type: PacketType.CONNECT, data: this.auth });\n        }\n    }\n    /**\n     * Called upon engine or manager `error`.\n     *\n     * @param err\n     * @private\n     */\n    onerror(err) {\n        if (!this.connected) {\n            this.emitReserved(\"connect_error\", err);\n        }\n    }\n    /**\n     * Called upon engine `close`.\n     *\n     * @param reason\n     * @private\n     */\n    onclose(reason) {\n        this.connected = false;\n        this.disconnected = true;\n        delete this.id;\n        this.emitReserved(\"disconnect\", reason);\n    }\n    /**\n     * Called with socket packet.\n     *\n     * @param packet\n     * @private\n     */\n    onpacket(packet) {\n        const sameNamespace = packet.nsp === this.nsp;\n        if (!sameNamespace)\n            return;\n        switch (packet.type) {\n            case PacketType.CONNECT:\n                if (packet.data && packet.data.sid) {\n                    const id = packet.data.sid;\n                    this.onconnect(id);\n                }\n                else {\n                    this.emitReserved(\"connect_error\", new Error(\"It seems you are trying to reach a Socket.IO server in v2.x with a v3.x client, but they are not compatible (more information here: https://socket.io/docs/v3/migrating-from-2-x-to-3-0/)\"));\n                }\n                break;\n            case PacketType.EVENT:\n                this.onevent(packet);\n                break;\n            case PacketType.BINARY_EVENT:\n                this.onevent(packet);\n                break;\n            case PacketType.ACK:\n                this.onack(packet);\n                break;\n            case PacketType.BINARY_ACK:\n                this.onack(packet);\n                break;\n            case PacketType.DISCONNECT:\n                this.ondisconnect();\n                break;\n            case PacketType.CONNECT_ERROR:\n                this.destroy();\n                const err = new Error(packet.data.message);\n                // @ts-ignore\n                err.data = packet.data.data;\n                this.emitReserved(\"connect_error\", err);\n                break;\n        }\n    }\n    /**\n     * Called upon a server event.\n     *\n     * @param packet\n     * @private\n     */\n    onevent(packet) {\n        const args = packet.data || [];\n        if (null != packet.id) {\n            args.push(this.ack(packet.id));\n        }\n        if (this.connected) {\n            this.emitEvent(args);\n        }\n        else {\n            this.receiveBuffer.push(Object.freeze(args));\n        }\n    }\n    emitEvent(args) {\n        if (this._anyListeners && this._anyListeners.length) {\n            const listeners = this._anyListeners.slice();\n            for (const listener of listeners) {\n                listener.apply(this, args);\n            }\n        }\n        super.emit.apply(this, args);\n    }\n    /**\n     * Produces an ack callback to emit with an event.\n     *\n     * @private\n     */\n    ack(id) {\n        const self = this;\n        let sent = false;\n        return function (...args) {\n            // prevent double callbacks\n            if (sent)\n                return;\n            sent = true;\n            self.packet({\n                type: PacketType.ACK,\n                id: id,\n                data: args,\n            });\n        };\n    }\n    /**\n     * Called upon a server acknowlegement.\n     *\n     * @param packet\n     * @private\n     */\n    onack(packet) {\n        const ack = this.acks[packet.id];\n        if (\"function\" === typeof ack) {\n            ack.apply(this, packet.data);\n            delete this.acks[packet.id];\n        }\n        else {\n        }\n    }\n    /**\n     * Called upon server connect.\n     *\n     * @private\n     */\n    onconnect(id) {\n        this.id = id;\n        this.connected = true;\n        this.disconnected = false;\n        this.emitBuffered();\n        this.emitReserved(\"connect\");\n    }\n    /**\n     * Emit buffered events (received and emitted).\n     *\n     * @private\n     */\n    emitBuffered() {\n        this.receiveBuffer.forEach((args) => this.emitEvent(args));\n        this.receiveBuffer = [];\n        this.sendBuffer.forEach((packet) => this.packet(packet));\n        this.sendBuffer = [];\n    }\n    /**\n     * Called upon server disconnect.\n     *\n     * @private\n     */\n    ondisconnect() {\n        this.destroy();\n        this.onclose(\"io server disconnect\");\n    }\n    /**\n     * Called upon forced client/server side disconnections,\n     * this method ensures the manager stops tracking us and\n     * that reconnections don't get triggered for this.\n     *\n     * @private\n     */\n    destroy() {\n        if (this.subs) {\n            // clean subscriptions to avoid reconnections\n            this.subs.forEach((subDestroy) => subDestroy());\n            this.subs = undefined;\n        }\n        this.io[\"_destroy\"](this);\n    }\n    /**\n     * Disconnects the socket manually.\n     *\n     * @return self\n     * @public\n     */\n    disconnect() {\n        if (this.connected) {\n            this.packet({ type: PacketType.DISCONNECT });\n        }\n        // remove socket from pool\n        this.destroy();\n        if (this.connected) {\n            // fire events\n            this.onclose(\"io client disconnect\");\n        }\n        return this;\n    }\n    /**\n     * Alias for disconnect()\n     *\n     * @return self\n     * @public\n     */\n    close() {\n        return this.disconnect();\n    }\n    /**\n     * Sets the compress flag.\n     *\n     * @param compress - if `true`, compresses the sending data\n     * @return self\n     * @public\n     */\n    compress(compress) {\n        this.flags.compress = compress;\n        return this;\n    }\n    /**\n     * Sets a modifier for a subsequent event emission that the event message will be dropped when this socket is not\n     * ready to send messages.\n     *\n     * @returns self\n     * @public\n     */\n    get volatile() {\n        this.flags.volatile = true;\n        return this;\n    }\n    /**\n     * Sets a modifier for a subsequent event emission that the callback will be called with an error when the\n     * given number of milliseconds have elapsed without an acknowledgement from the server:\n     *\n     * ```\n     * socket.timeout(5000).emit(\"my-event\", (err) => {\n     *   if (err) {\n     *     // the server did not acknowledge the event in the given delay\n     *   }\n     * });\n     * ```\n     *\n     * @returns self\n     * @public\n     */\n    timeout(timeout) {\n        this.flags.timeout = timeout;\n        return this;\n    }\n    /**\n     * Adds a listener that will be fired when any event is emitted. The event name is passed as the first argument to the\n     * callback.\n     *\n     * @param listener\n     * @public\n     */\n    onAny(listener) {\n        this._anyListeners = this._anyListeners || [];\n        this._anyListeners.push(listener);\n        return this;\n    }\n    /**\n     * Adds a listener that will be fired when any event is emitted. The event name is passed as the first argument to the\n     * callback. The listener is added to the beginning of the listeners array.\n     *\n     * @param listener\n     * @public\n     */\n    prependAny(listener) {\n        this._anyListeners = this._anyListeners || [];\n        this._anyListeners.unshift(listener);\n        return this;\n    }\n    /**\n     * Removes the listener that will be fired when any event is emitted.\n     *\n     * @param listener\n     * @public\n     */\n    offAny(listener) {\n        if (!this._anyListeners) {\n            return this;\n        }\n        if (listener) {\n            const listeners = this._anyListeners;\n            for (let i = 0; i < listeners.length; i++) {\n                if (listener === listeners[i]) {\n                    listeners.splice(i, 1);\n                    return this;\n                }\n            }\n        }\n        else {\n            this._anyListeners = [];\n        }\n        return this;\n    }\n    /**\n     * Returns an array of listeners that are listening for any event that is specified. This array can be manipulated,\n     * e.g. to remove listeners.\n     *\n     * @public\n     */\n    listenersAny() {\n        return this._anyListeners || [];\n    }\n}\n","\n/**\n * Expose `Backoff`.\n */\n\nmodule.exports = Backoff;\n\n/**\n * Initialize backoff timer with `opts`.\n *\n * - `min` initial timeout in milliseconds [100]\n * - `max` max timeout [10000]\n * - `jitter` [0]\n * - `factor` [2]\n *\n * @param {Object} opts\n * @api public\n */\n\nfunction Backoff(opts) {\n  opts = opts || {};\n  this.ms = opts.min || 100;\n  this.max = opts.max || 10000;\n  this.factor = opts.factor || 2;\n  this.jitter = opts.jitter > 0 && opts.jitter <= 1 ? opts.jitter : 0;\n  this.attempts = 0;\n}\n\n/**\n * Return the backoff duration.\n *\n * @return {Number}\n * @api public\n */\n\nBackoff.prototype.duration = function(){\n  var ms = this.ms * Math.pow(this.factor, this.attempts++);\n  if (this.jitter) {\n    var rand =  Math.random();\n    var deviation = Math.floor(rand * this.jitter * ms);\n    ms = (Math.floor(rand * 10) & 1) == 0  ? ms - deviation : ms + deviation;\n  }\n  return Math.min(ms, this.max) | 0;\n};\n\n/**\n * Reset the number of attempts.\n *\n * @api public\n */\n\nBackoff.prototype.reset = function(){\n  this.attempts = 0;\n};\n\n/**\n * Set the minimum duration\n *\n * @api public\n */\n\nBackoff.prototype.setMin = function(min){\n  this.ms = min;\n};\n\n/**\n * Set the maximum duration\n *\n * @api public\n */\n\nBackoff.prototype.setMax = function(max){\n  this.max = max;\n};\n\n/**\n * Set the jitter\n *\n * @api public\n */\n\nBackoff.prototype.setJitter = function(jitter){\n  this.jitter = jitter;\n};\n\n","import { Socket as Engine, installTimerFunctions, } from \"engine.io-client\";\nimport { Socket } from \"./socket.js\";\nimport * as parser from \"socket.io-parser\";\nimport { on } from \"./on.js\";\nimport Backoff from \"backo2\";\nimport { Emitter, } from \"@socket.io/component-emitter\";\nexport class Manager extends Emitter {\n    constructor(uri, opts) {\n        var _a;\n        super();\n        this.nsps = {};\n        this.subs = [];\n        if (uri && \"object\" === typeof uri) {\n            opts = uri;\n            uri = undefined;\n        }\n        opts = opts || {};\n        opts.path = opts.path || \"/socket.io\";\n        this.opts = opts;\n        installTimerFunctions(this, opts);\n        this.reconnection(opts.reconnection !== false);\n        this.reconnectionAttempts(opts.reconnectionAttempts || Infinity);\n        this.reconnectionDelay(opts.reconnectionDelay || 1000);\n        this.reconnectionDelayMax(opts.reconnectionDelayMax || 5000);\n        this.randomizationFactor((_a = opts.randomizationFactor) !== null && _a !== void 0 ? _a : 0.5);\n        this.backoff = new Backoff({\n            min: this.reconnectionDelay(),\n            max: this.reconnectionDelayMax(),\n            jitter: this.randomizationFactor(),\n        });\n        this.timeout(null == opts.timeout ? 20000 : opts.timeout);\n        this._readyState = \"closed\";\n        this.uri = uri;\n        const _parser = opts.parser || parser;\n        this.encoder = new _parser.Encoder();\n        this.decoder = new _parser.Decoder();\n        this._autoConnect = opts.autoConnect !== false;\n        if (this._autoConnect)\n            this.open();\n    }\n    reconnection(v) {\n        if (!arguments.length)\n            return this._reconnection;\n        this._reconnection = !!v;\n        return this;\n    }\n    reconnectionAttempts(v) {\n        if (v === undefined)\n            return this._reconnectionAttempts;\n        this._reconnectionAttempts = v;\n        return this;\n    }\n    reconnectionDelay(v) {\n        var _a;\n        if (v === undefined)\n            return this._reconnectionDelay;\n        this._reconnectionDelay = v;\n        (_a = this.backoff) === null || _a === void 0 ? void 0 : _a.setMin(v);\n        return this;\n    }\n    randomizationFactor(v) {\n        var _a;\n        if (v === undefined)\n            return this._randomizationFactor;\n        this._randomizationFactor = v;\n        (_a = this.backoff) === null || _a === void 0 ? void 0 : _a.setJitter(v);\n        return this;\n    }\n    reconnectionDelayMax(v) {\n        var _a;\n        if (v === undefined)\n            return this._reconnectionDelayMax;\n        this._reconnectionDelayMax = v;\n        (_a = this.backoff) === null || _a === void 0 ? void 0 : _a.setMax(v);\n        return this;\n    }\n    timeout(v) {\n        if (!arguments.length)\n            return this._timeout;\n        this._timeout = v;\n        return this;\n    }\n    /**\n     * Starts trying to reconnect if reconnection is enabled and we have not\n     * started reconnecting yet\n     *\n     * @private\n     */\n    maybeReconnectOnOpen() {\n        // Only try to reconnect if it's the first time we're connecting\n        if (!this._reconnecting &&\n            this._reconnection &&\n            this.backoff.attempts === 0) {\n            // keeps reconnection from firing twice for the same reconnection loop\n            this.reconnect();\n        }\n    }\n    /**\n     * Sets the current transport `socket`.\n     *\n     * @param {Function} fn - optional, callback\n     * @return self\n     * @public\n     */\n    open(fn) {\n        if (~this._readyState.indexOf(\"open\"))\n            return this;\n        this.engine = new Engine(this.uri, this.opts);\n        const socket = this.engine;\n        const self = this;\n        this._readyState = \"opening\";\n        this.skipReconnect = false;\n        // emit `open`\n        const openSubDestroy = on(socket, \"open\", function () {\n            self.onopen();\n            fn && fn();\n        });\n        // emit `error`\n        const errorSub = on(socket, \"error\", (err) => {\n            self.cleanup();\n            self._readyState = \"closed\";\n            this.emitReserved(\"error\", err);\n            if (fn) {\n                fn(err);\n            }\n            else {\n                // Only do this if there is no fn to handle the error\n                self.maybeReconnectOnOpen();\n            }\n        });\n        if (false !== this._timeout) {\n            const timeout = this._timeout;\n            if (timeout === 0) {\n                openSubDestroy(); // prevents a race condition with the 'open' event\n            }\n            // set timer\n            const timer = this.setTimeoutFn(() => {\n                openSubDestroy();\n                socket.close();\n                // @ts-ignore\n                socket.emit(\"error\", new Error(\"timeout\"));\n            }, timeout);\n            if (this.opts.autoUnref) {\n                timer.unref();\n            }\n            this.subs.push(function subDestroy() {\n                clearTimeout(timer);\n            });\n        }\n        this.subs.push(openSubDestroy);\n        this.subs.push(errorSub);\n        return this;\n    }\n    /**\n     * Alias for open()\n     *\n     * @return self\n     * @public\n     */\n    connect(fn) {\n        return this.open(fn);\n    }\n    /**\n     * Called upon transport open.\n     *\n     * @private\n     */\n    onopen() {\n        // clear old subs\n        this.cleanup();\n        // mark as open\n        this._readyState = \"open\";\n        this.emitReserved(\"open\");\n        // add new subs\n        const socket = this.engine;\n        this.subs.push(on(socket, \"ping\", this.onping.bind(this)), on(socket, \"data\", this.ondata.bind(this)), on(socket, \"error\", this.onerror.bind(this)), on(socket, \"close\", this.onclose.bind(this)), on(this.decoder, \"decoded\", this.ondecoded.bind(this)));\n    }\n    /**\n     * Called upon a ping.\n     *\n     * @private\n     */\n    onping() {\n        this.emitReserved(\"ping\");\n    }\n    /**\n     * Called with data.\n     *\n     * @private\n     */\n    ondata(data) {\n        this.decoder.add(data);\n    }\n    /**\n     * Called when parser fully decodes a packet.\n     *\n     * @private\n     */\n    ondecoded(packet) {\n        this.emitReserved(\"packet\", packet);\n    }\n    /**\n     * Called upon socket error.\n     *\n     * @private\n     */\n    onerror(err) {\n        this.emitReserved(\"error\", err);\n    }\n    /**\n     * Creates a new socket for the given `nsp`.\n     *\n     * @return {Socket}\n     * @public\n     */\n    socket(nsp, opts) {\n        let socket = this.nsps[nsp];\n        if (!socket) {\n            socket = new Socket(this, nsp, opts);\n            this.nsps[nsp] = socket;\n        }\n        return socket;\n    }\n    /**\n     * Called upon a socket close.\n     *\n     * @param socket\n     * @private\n     */\n    _destroy(socket) {\n        const nsps = Object.keys(this.nsps);\n        for (const nsp of nsps) {\n            const socket = this.nsps[nsp];\n            if (socket.active) {\n                return;\n            }\n        }\n        this._close();\n    }\n    /**\n     * Writes a packet.\n     *\n     * @param packet\n     * @private\n     */\n    _packet(packet) {\n        const encodedPackets = this.encoder.encode(packet);\n        for (let i = 0; i < encodedPackets.length; i++) {\n            this.engine.write(encodedPackets[i], packet.options);\n        }\n    }\n    /**\n     * Clean up transport subscriptions and packet buffer.\n     *\n     * @private\n     */\n    cleanup() {\n        this.subs.forEach((subDestroy) => subDestroy());\n        this.subs.length = 0;\n        this.decoder.destroy();\n    }\n    /**\n     * Close the current socket.\n     *\n     * @private\n     */\n    _close() {\n        this.skipReconnect = true;\n        this._reconnecting = false;\n        this.onclose(\"forced close\");\n        if (this.engine)\n            this.engine.close();\n    }\n    /**\n     * Alias for close()\n     *\n     * @private\n     */\n    disconnect() {\n        return this._close();\n    }\n    /**\n     * Called upon engine close.\n     *\n     * @private\n     */\n    onclose(reason) {\n        this.cleanup();\n        this.backoff.reset();\n        this._readyState = \"closed\";\n        this.emitReserved(\"close\", reason);\n        if (this._reconnection && !this.skipReconnect) {\n            this.reconnect();\n        }\n    }\n    /**\n     * Attempt a reconnection.\n     *\n     * @private\n     */\n    reconnect() {\n        if (this._reconnecting || this.skipReconnect)\n            return this;\n        const self = this;\n        if (this.backoff.attempts >= this._reconnectionAttempts) {\n            this.backoff.reset();\n            this.emitReserved(\"reconnect_failed\");\n            this._reconnecting = false;\n        }\n        else {\n            const delay = this.backoff.duration();\n            this._reconnecting = true;\n            const timer = this.setTimeoutFn(() => {\n                if (self.skipReconnect)\n                    return;\n                this.emitReserved(\"reconnect_attempt\", self.backoff.attempts);\n                // check again for the case socket closed in above events\n                if (self.skipReconnect)\n                    return;\n                self.open((err) => {\n                    if (err) {\n                        self._reconnecting = false;\n                        self.reconnect();\n                        this.emitReserved(\"reconnect_error\", err);\n                    }\n                    else {\n                        self.onreconnect();\n                    }\n                });\n            }, delay);\n            if (this.opts.autoUnref) {\n                timer.unref();\n            }\n            this.subs.push(function subDestroy() {\n                clearTimeout(timer);\n            });\n        }\n    }\n    /**\n     * Called upon successful reconnect.\n     *\n     * @private\n     */\n    onreconnect() {\n        const attempt = this.backoff.attempts;\n        this._reconnecting = false;\n        this.backoff.reset();\n        this.emitReserved(\"reconnect\", attempt);\n    }\n}\n","import { url } from \"./url.js\";\nimport { Manager } from \"./manager.js\";\nimport { Socket } from \"./socket.js\";\n/**\n * Managers cache.\n */\nconst cache = {};\nfunction lookup(uri, opts) {\n    if (typeof uri === \"object\") {\n        opts = uri;\n        uri = undefined;\n    }\n    opts = opts || {};\n    const parsed = url(uri, opts.path || \"/socket.io\");\n    const source = parsed.source;\n    const id = parsed.id;\n    const path = parsed.path;\n    const sameNamespace = cache[id] && path in cache[id][\"nsps\"];\n    const newConnection = opts.forceNew ||\n        opts[\"force new connection\"] ||\n        false === opts.multiplex ||\n        sameNamespace;\n    let io;\n    if (newConnection) {\n        io = new Manager(source, opts);\n    }\n    else {\n        if (!cache[id]) {\n            cache[id] = new Manager(source, opts);\n        }\n        io = cache[id];\n    }\n    if (parsed.query && !opts.query) {\n        opts.query = parsed.queryKey;\n    }\n    return io.socket(parsed.path, opts);\n}\n// so that \"lookup\" can be used both as a function (e.g. `io(...)`) and as a\n// namespace (e.g. `io.connect(...)`), for backward compatibility\nObject.assign(lookup, {\n    Manager,\n    Socket,\n    io: lookup,\n    connect: lookup,\n});\n/**\n * Protocol version.\n *\n * @public\n */\nexport { protocol } from \"socket.io-parser\";\n/**\n * Expose constructors for standalone build.\n *\n * @public\n */\nexport { Manager, Socket, lookup as io, lookup as connect, lookup as default, 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\t};\n\n \t// Object.prototype.hasOwnProperty.call\n \t__webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };\n\n \t// __webpack_public_path__\n \t__webpack_require__.p = \"\";\n\n\n \t// Load entry module and return exports\n \treturn __webpack_require__(__webpack_require__.s = \"./build/index.js\");\n","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.Socket = exports.io = exports.Manager = exports.protocol = void 0;\nconst url_1 = require(\"./url\");\nconst manager_1 = require(\"./manager\");\nconst socket_1 = require(\"./socket\");\nObject.defineProperty(exports, \"Socket\", { enumerable: true, get: function () { return socket_1.Socket; } });\nconst debug = require(\"debug\")(\"socket.io-client\");\n/**\n * Module exports.\n */\nmodule.exports = exports = lookup;\n/**\n * Managers cache.\n */\nconst cache = (exports.managers = {});\nfunction lookup(uri, opts) {\n    if (typeof uri === \"object\") {\n        opts = uri;\n        uri = undefined;\n    }\n    opts = opts || {};\n    const parsed = url_1.url(uri, opts.path);\n    const source = parsed.source;\n    const id = parsed.id;\n    const path = parsed.path;\n    const sameNamespace = cache[id] && path in cache[id][\"nsps\"];\n    const newConnection = opts.forceNew ||\n        opts[\"force new connection\"] ||\n        false === opts.multiplex ||\n        sameNamespace;\n    let io;\n    if (newConnection) {\n        debug(\"ignoring socket cache for %s\", source);\n        io = new manager_1.Manager(source, opts);\n    }\n    else {\n        if (!cache[id]) {\n            debug(\"new io instance for %s\", source);\n            cache[id] = new manager_1.Manager(source, opts);\n        }\n        io = cache[id];\n    }\n    if (parsed.query && !opts.query) {\n        opts.query = parsed.queryKey;\n    }\n    return io.socket(parsed.path, opts);\n}\nexports.io = lookup;\n/**\n * Protocol version.\n *\n * @public\n */\nvar socket_io_parser_1 = require(\"socket.io-parser\");\nObject.defineProperty(exports, \"protocol\", { enumerable: true, get: function () { return socket_io_parser_1.protocol; } });\n/**\n * `connect`.\n *\n * @param {String} uri\n * @public\n */\nexports.connect = lookup;\n/**\n * Expose constructors for standalone build.\n *\n * @public\n */\nvar manager_2 = require(\"./manager\");\nObject.defineProperty(exports, \"Manager\", { enumerable: true, get: function () { return manager_2.Manager; } });\n","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.Manager = void 0;\nconst eio = require(\"engine.io-client\");\nconst socket_1 = require(\"./socket\");\nconst Emitter = require(\"component-emitter\");\nconst parser = require(\"socket.io-parser\");\nconst on_1 = require(\"./on\");\nconst Backoff = require(\"backo2\");\nconst debug = require(\"debug\")(\"socket.io-client:manager\");\nclass Manager extends Emitter {\n    constructor(uri, opts) {\n        super();\n        this.nsps = {};\n        this.subs = [];\n        if (uri && \"object\" === typeof uri) {\n            opts = uri;\n            uri = undefined;\n        }\n        opts = opts || {};\n        opts.path = opts.path || \"/socket.io\";\n        this.opts = opts;\n        this.reconnection(opts.reconnection !== false);\n        this.reconnectionAttempts(opts.reconnectionAttempts || Infinity);\n        this.reconnectionDelay(opts.reconnectionDelay || 1000);\n        this.reconnectionDelayMax(opts.reconnectionDelayMax || 5000);\n        this.randomizationFactor(opts.randomizationFactor || 0.5);\n        this.backoff = new Backoff({\n            min: this.reconnectionDelay(),\n            max: this.reconnectionDelayMax(),\n            jitter: this.randomizationFactor(),\n        });\n        this.timeout(null == opts.timeout ? 20000 : opts.timeout);\n        this._readyState = \"closed\";\n        this.uri = uri;\n        const _parser = opts.parser || parser;\n        this.encoder = new _parser.Encoder();\n        this.decoder = new _parser.Decoder();\n        this._autoConnect = opts.autoConnect !== false;\n        if (this._autoConnect)\n            this.open();\n    }\n    reconnection(v) {\n        if (!arguments.length)\n            return this._reconnection;\n        this._reconnection = !!v;\n        return this;\n    }\n    reconnectionAttempts(v) {\n        if (v === undefined)\n            return this._reconnectionAttempts;\n        this._reconnectionAttempts = v;\n        return this;\n    }\n    reconnectionDelay(v) {\n        var _a;\n        if (v === undefined)\n            return this._reconnectionDelay;\n        this._reconnectionDelay = v;\n        (_a = this.backoff) === null || _a === void 0 ? void 0 : _a.setMin(v);\n        return this;\n    }\n    randomizationFactor(v) {\n        var _a;\n        if (v === undefined)\n            return this._randomizationFactor;\n        this._randomizationFactor = v;\n        (_a = this.backoff) === null || _a === void 0 ? void 0 : _a.setJitter(v);\n        return this;\n    }\n    reconnectionDelayMax(v) {\n        var _a;\n        if (v === undefined)\n            return this._reconnectionDelayMax;\n        this._reconnectionDelayMax = v;\n        (_a = this.backoff) === null || _a === void 0 ? void 0 : _a.setMax(v);\n        return this;\n    }\n    timeout(v) {\n        if (!arguments.length)\n            return this._timeout;\n        this._timeout = v;\n        return this;\n    }\n    /**\n     * Starts trying to reconnect if reconnection is enabled and we have not\n     * started reconnecting yet\n     *\n     * @private\n     */\n    maybeReconnectOnOpen() {\n        // Only try to reconnect if it's the first time we're connecting\n        if (!this._reconnecting &&\n            this._reconnection &&\n            this.backoff.attempts === 0) {\n            // keeps reconnection from firing twice for the same reconnection loop\n            this.reconnect();\n        }\n    }\n    /**\n     * Sets the current transport `socket`.\n     *\n     * @param {Function} fn - optional, callback\n     * @return self\n     * @public\n     */\n    open(fn) {\n        debug(\"readyState %s\", this._readyState);\n        if (~this._readyState.indexOf(\"open\"))\n            return this;\n        debug(\"opening %s\", this.uri);\n        this.engine = eio(this.uri, this.opts);\n        const socket = this.engine;\n        const self = this;\n        this._readyState = \"opening\";\n        this.skipReconnect = false;\n        // emit `open`\n        const openSubDestroy = on_1.on(socket, \"open\", function () {\n            self.onopen();\n            fn && fn();\n        });\n        // emit `error`\n        const errorSub = on_1.on(socket, \"error\", (err) => {\n            debug(\"error\");\n            self.cleanup();\n            self._readyState = \"closed\";\n            super.emit(\"error\", err);\n            if (fn) {\n                fn(err);\n            }\n            else {\n                // Only do this if there is no fn to handle the error\n                self.maybeReconnectOnOpen();\n            }\n        });\n        if (false !== this._timeout) {\n            const timeout = this._timeout;\n            debug(\"connect attempt will timeout after %d\", timeout);\n            if (timeout === 0) {\n                openSubDestroy(); // prevents a race condition with the 'open' event\n            }\n            // set timer\n            const timer = setTimeout(() => {\n                debug(\"connect attempt timed out after %d\", timeout);\n                openSubDestroy();\n                socket.close();\n                socket.emit(\"error\", new Error(\"timeout\"));\n            }, timeout);\n            this.subs.push(function subDestroy() {\n                clearTimeout(timer);\n            });\n        }\n        this.subs.push(openSubDestroy);\n        this.subs.push(errorSub);\n        return this;\n    }\n    /**\n     * Alias for open()\n     *\n     * @return self\n     * @public\n     */\n    connect(fn) {\n        return this.open(fn);\n    }\n    /**\n     * Called upon transport open.\n     *\n     * @private\n     */\n    onopen() {\n        debug(\"open\");\n        // clear old subs\n        this.cleanup();\n        // mark as open\n        this._readyState = \"open\";\n        super.emit(\"open\");\n        // add new subs\n        const socket = this.engine;\n        this.subs.push(on_1.on(socket, \"ping\", this.onping.bind(this)), on_1.on(socket, \"data\", this.ondata.bind(this)), on_1.on(socket, \"error\", this.onerror.bind(this)), on_1.on(socket, \"close\", this.onclose.bind(this)), on_1.on(this.decoder, \"decoded\", this.ondecoded.bind(this)));\n    }\n    /**\n     * Called upon a ping.\n     *\n     * @private\n     */\n    onping() {\n        super.emit(\"ping\");\n    }\n    /**\n     * Called with data.\n     *\n     * @private\n     */\n    ondata(data) {\n        this.decoder.add(data);\n    }\n    /**\n     * Called when parser fully decodes a packet.\n     *\n     * @private\n     */\n    ondecoded(packet) {\n        super.emit(\"packet\", packet);\n    }\n    /**\n     * Called upon socket error.\n     *\n     * @private\n     */\n    onerror(err) {\n        debug(\"error\", err);\n        super.emit(\"error\", err);\n    }\n    /**\n     * Creates a new socket for the given `nsp`.\n     *\n     * @return {Socket}\n     * @public\n     */\n    socket(nsp, opts) {\n        let socket = this.nsps[nsp];\n        if (!socket) {\n            socket = new socket_1.Socket(this, nsp, opts);\n            this.nsps[nsp] = socket;\n        }\n        return socket;\n    }\n    /**\n     * Called upon a socket close.\n     *\n     * @param socket\n     * @private\n     */\n    _destroy(socket) {\n        const nsps = Object.keys(this.nsps);\n        for (const nsp of nsps) {\n            const socket = this.nsps[nsp];\n            if (socket.active) {\n                debug(\"socket %s is still active, skipping close\", nsp);\n                return;\n            }\n        }\n        this._close();\n    }\n    /**\n     * Writes a packet.\n     *\n     * @param packet\n     * @private\n     */\n    _packet(packet) {\n        debug(\"writing packet %j\", packet);\n        const encodedPackets = this.encoder.encode(packet);\n        for (let i = 0; i < encodedPackets.length; i++) {\n            this.engine.write(encodedPackets[i], packet.options);\n        }\n    }\n    /**\n     * Clean up transport subscriptions and packet buffer.\n     *\n     * @private\n     */\n    cleanup() {\n        debug(\"cleanup\");\n        this.subs.forEach((subDestroy) => subDestroy());\n        this.subs.length = 0;\n        this.decoder.destroy();\n    }\n    /**\n     * Close the current socket.\n     *\n     * @private\n     */\n    _close() {\n        debug(\"disconnect\");\n        this.skipReconnect = true;\n        this._reconnecting = false;\n        if (\"opening\" === this._readyState) {\n            // `onclose` will not fire because\n            // an open event never happened\n            this.cleanup();\n        }\n        this.backoff.reset();\n        this._readyState = \"closed\";\n        if (this.engine)\n            this.engine.close();\n    }\n    /**\n     * Alias for close()\n     *\n     * @private\n     */\n    disconnect() {\n        return this._close();\n    }\n    /**\n     * Called upon engine close.\n     *\n     * @private\n     */\n    onclose(reason) {\n        debug(\"onclose\");\n        this.cleanup();\n        this.backoff.reset();\n        this._readyState = \"closed\";\n        super.emit(\"close\", reason);\n        if (this._reconnection && !this.skipReconnect) {\n            this.reconnect();\n        }\n    }\n    /**\n     * Attempt a reconnection.\n     *\n     * @private\n     */\n    reconnect() {\n        if (this._reconnecting || this.skipReconnect)\n            return this;\n        const self = this;\n        if (this.backoff.attempts >= this._reconnectionAttempts) {\n            debug(\"reconnect failed\");\n            this.backoff.reset();\n            super.emit(\"reconnect_failed\");\n            this._reconnecting = false;\n        }\n        else {\n            const delay = this.backoff.duration();\n            debug(\"will wait %dms before reconnect attempt\", delay);\n            this._reconnecting = true;\n            const timer = setTimeout(() => {\n                if (self.skipReconnect)\n                    return;\n                debug(\"attempting reconnect\");\n                super.emit(\"reconnect_attempt\", self.backoff.attempts);\n                // check again for the case socket closed in above events\n                if (self.skipReconnect)\n                    return;\n                self.open((err) => {\n                    if (err) {\n                        debug(\"reconnect attempt error\");\n                        self._reconnecting = false;\n                        self.reconnect();\n                        super.emit(\"reconnect_error\", err);\n                    }\n                    else {\n                        debug(\"reconnect success\");\n                        self.onreconnect();\n                    }\n                });\n            }, delay);\n            this.subs.push(function subDestroy() {\n                clearTimeout(timer);\n            });\n        }\n    }\n    /**\n     * Called upon successful reconnect.\n     *\n     * @private\n     */\n    onreconnect() {\n        const attempt = this.backoff.attempts;\n        this._reconnecting = false;\n        this.backoff.reset();\n        super.emit(\"reconnect\", attempt);\n    }\n}\nexports.Manager = Manager;\n","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.on = void 0;\nfunction on(obj, ev, fn) {\n    obj.on(ev, fn);\n    return function subDestroy() {\n        obj.off(ev, fn);\n    };\n}\nexports.on = on;\n","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.Socket = void 0;\nconst socket_io_parser_1 = require(\"socket.io-parser\");\nconst Emitter = require(\"component-emitter\");\nconst on_1 = require(\"./on\");\nconst debug = require(\"debug\")(\"socket.io-client:socket\");\n/**\n * Internal events.\n * These events can't be emitted by the user.\n */\nconst RESERVED_EVENTS = Object.freeze({\n    connect: 1,\n    connect_error: 1,\n    disconnect: 1,\n    disconnecting: 1,\n    // EventEmitter reserved events: https://nodejs.org/api/events.html#events_event_newlistener\n    newListener: 1,\n    removeListener: 1,\n});\nclass Socket extends Emitter {\n    /**\n     * `Socket` constructor.\n     *\n     * @public\n     */\n    constructor(io, nsp, opts) {\n        super();\n        this.receiveBuffer = [];\n        this.sendBuffer = [];\n        this.ids = 0;\n        this.acks = {};\n        this.flags = {};\n        this.io = io;\n        this.nsp = nsp;\n        this.ids = 0;\n        this.acks = {};\n        this.receiveBuffer = [];\n        this.sendBuffer = [];\n        this.connected = false;\n        this.disconnected = true;\n        this.flags = {};\n        if (opts && opts.auth) {\n            this.auth = opts.auth;\n        }\n        if (this.io._autoConnect)\n            this.open();\n    }\n    /**\n     * Subscribe to open, close and packet events\n     *\n     * @private\n     */\n    subEvents() {\n        if (this.subs)\n            return;\n        const io = this.io;\n        this.subs = [\n            on_1.on(io, \"open\", this.onopen.bind(this)),\n            on_1.on(io, \"packet\", this.onpacket.bind(this)),\n            on_1.on(io, \"error\", this.onerror.bind(this)),\n            on_1.on(io, \"close\", this.onclose.bind(this)),\n        ];\n    }\n    /**\n     * Whether the Socket will try to reconnect when its Manager connects or reconnects\n     */\n    get active() {\n        return !!this.subs;\n    }\n    /**\n     * \"Opens\" the socket.\n     *\n     * @public\n     */\n    connect() {\n        if (this.connected)\n            return this;\n        this.subEvents();\n        if (!this.io[\"_reconnecting\"])\n            this.io.open(); // ensure open\n        if (\"open\" === this.io._readyState)\n            this.onopen();\n        return this;\n    }\n    /**\n     * Alias for connect()\n     */\n    open() {\n        return this.connect();\n    }\n    /**\n     * Sends a `message` event.\n     *\n     * @return self\n     * @public\n     */\n    send(...args) {\n        args.unshift(\"message\");\n        this.emit.apply(this, args);\n        return this;\n    }\n    /**\n     * Override `emit`.\n     * If the event is in `events`, it's emitted normally.\n     *\n     * @param ev - event name\n     * @return self\n     * @public\n     */\n    emit(ev, ...args) {\n        if (RESERVED_EVENTS.hasOwnProperty(ev)) {\n            throw new Error('\"' + ev + '\" is a reserved event name');\n        }\n        args.unshift(ev);\n        const packet = {\n            type: socket_io_parser_1.PacketType.EVENT,\n            data: args,\n        };\n        packet.options = {};\n        packet.options.compress = this.flags.compress !== false;\n        // event ack callback\n        if (\"function\" === typeof args[args.length - 1]) {\n            debug(\"emitting packet with ack id %d\", this.ids);\n            this.acks[this.ids] = args.pop();\n            packet.id = this.ids++;\n        }\n        const isTransportWritable = this.io.engine &&\n            this.io.engine.transport &&\n            this.io.engine.transport.writable;\n        const discardPacket = this.flags.volatile && (!isTransportWritable || !this.connected);\n        if (discardPacket) {\n            debug(\"discard packet as the transport is not currently writable\");\n        }\n        else if (this.connected) {\n            this.packet(packet);\n        }\n        else {\n            this.sendBuffer.push(packet);\n        }\n        this.flags = {};\n        return this;\n    }\n    /**\n     * Sends a packet.\n     *\n     * @param packet\n     * @private\n     */\n    packet(packet) {\n        packet.nsp = this.nsp;\n        this.io._packet(packet);\n    }\n    /**\n     * Called upon engine `open`.\n     *\n     * @private\n     */\n    onopen() {\n        debug(\"transport is open - connecting\");\n        if (typeof this.auth == \"function\") {\n            this.auth((data) => {\n                this.packet({ type: socket_io_parser_1.PacketType.CONNECT, data });\n            });\n        }\n        else {\n            this.packet({ type: socket_io_parser_1.PacketType.CONNECT, data: this.auth });\n        }\n    }\n    /**\n     * Called upon engine or manager `error`.\n     *\n     * @param err\n     * @private\n     */\n    onerror(err) {\n        if (!this.connected) {\n            super.emit(\"connect_error\", err);\n        }\n    }\n    /**\n     * Called upon engine `close`.\n     *\n     * @param reason\n     * @private\n     */\n    onclose(reason) {\n        debug(\"close (%s)\", reason);\n        this.connected = false;\n        this.disconnected = true;\n        delete this.id;\n        super.emit(\"disconnect\", reason);\n    }\n    /**\n     * Called with socket packet.\n     *\n     * @param packet\n     * @private\n     */\n    onpacket(packet) {\n        const sameNamespace = packet.nsp === this.nsp;\n        if (!sameNamespace)\n            return;\n        switch (packet.type) {\n            case socket_io_parser_1.PacketType.CONNECT:\n                if (packet.data && packet.data.sid) {\n                    const id = packet.data.sid;\n                    this.onconnect(id);\n                }\n                else {\n                    super.emit(\"connect_error\", new Error(\"It seems you are trying to reach a Socket.IO server in v2.x with a v3.x client, but they are not compatible (more information here: https://socket.io/docs/v3/migrating-from-2-x-to-3-0/)\"));\n                }\n                break;\n            case socket_io_parser_1.PacketType.EVENT:\n                this.onevent(packet);\n                break;\n            case socket_io_parser_1.PacketType.BINARY_EVENT:\n                this.onevent(packet);\n                break;\n            case socket_io_parser_1.PacketType.ACK:\n                this.onack(packet);\n                break;\n            case socket_io_parser_1.PacketType.BINARY_ACK:\n                this.onack(packet);\n                break;\n            case socket_io_parser_1.PacketType.DISCONNECT:\n                this.ondisconnect();\n                break;\n            case socket_io_parser_1.PacketType.CONNECT_ERROR:\n                const err = new Error(packet.data.message);\n                // @ts-ignore\n                err.data = packet.data.data;\n                super.emit(\"connect_error\", err);\n                break;\n        }\n    }\n    /**\n     * Called upon a server event.\n     *\n     * @param packet\n     * @private\n     */\n    onevent(packet) {\n        const args = packet.data || [];\n        debug(\"emitting event %j\", args);\n        if (null != packet.id) {\n            debug(\"attaching ack callback to event\");\n            args.push(this.ack(packet.id));\n        }\n        if (this.connected) {\n            this.emitEvent(args);\n        }\n        else {\n            this.receiveBuffer.push(Object.freeze(args));\n        }\n    }\n    emitEvent(args) {\n        if (this._anyListeners && this._anyListeners.length) {\n            const listeners = this._anyListeners.slice();\n            for (const listener of listeners) {\n                listener.apply(this, args);\n            }\n        }\n        super.emit.apply(this, args);\n    }\n    /**\n     * Produces an ack callback to emit with an event.\n     *\n     * @private\n     */\n    ack(id) {\n        const self = this;\n        let sent = false;\n        return function (...args) {\n            // prevent double callbacks\n            if (sent)\n                return;\n            sent = true;\n            debug(\"sending ack %j\", args);\n            self.packet({\n                type: socket_io_parser_1.PacketType.ACK,\n                id: id,\n                data: args,\n            });\n        };\n    }\n    /**\n     * Called upon a server acknowlegement.\n     *\n     * @param packet\n     * @private\n     */\n    onack(packet) {\n        const ack = this.acks[packet.id];\n        if (\"function\" === typeof ack) {\n            debug(\"calling ack %s with %j\", packet.id, packet.data);\n            ack.apply(this, packet.data);\n            delete this.acks[packet.id];\n        }\n        else {\n            debug(\"bad ack %s\", packet.id);\n        }\n    }\n    /**\n     * Called upon server connect.\n     *\n     * @private\n     */\n    onconnect(id) {\n        debug(\"socket connected with id %s\", id);\n        this.id = id;\n        this.connected = true;\n        this.disconnected = false;\n        super.emit(\"connect\");\n        this.emitBuffered();\n    }\n    /**\n     * Emit buffered events (received and emitted).\n     *\n     * @private\n     */\n    emitBuffered() {\n        this.receiveBuffer.forEach((args) => this.emitEvent(args));\n        this.receiveBuffer = [];\n        this.sendBuffer.forEach((packet) => this.packet(packet));\n        this.sendBuffer = [];\n    }\n    /**\n     * Called upon server disconnect.\n     *\n     * @private\n     */\n    ondisconnect() {\n        debug(\"server disconnect (%s)\", this.nsp);\n        this.destroy();\n        this.onclose(\"io server disconnect\");\n    }\n    /**\n     * Called upon forced client/server side disconnections,\n     * this method ensures the manager stops tracking us and\n     * that reconnections don't get triggered for this.\n     *\n     * @private\n     */\n    destroy() {\n        if (this.subs) {\n            // clean subscriptions to avoid reconnections\n            this.subs.forEach((subDestroy) => subDestroy());\n            this.subs = undefined;\n        }\n        this.io[\"_destroy\"](this);\n    }\n    /**\n     * Disconnects the socket manually.\n     *\n     * @return self\n     * @public\n     */\n    disconnect() {\n        if (this.connected) {\n            debug(\"performing disconnect (%s)\", this.nsp);\n            this.packet({ type: socket_io_parser_1.PacketType.DISCONNECT });\n        }\n        // remove socket from pool\n        this.destroy();\n        if (this.connected) {\n            // fire events\n            this.onclose(\"io client disconnect\");\n        }\n        return this;\n    }\n    /**\n     * Alias for disconnect()\n     *\n     * @return self\n     * @public\n     */\n    close() {\n        return this.disconnect();\n    }\n    /**\n     * Sets the compress flag.\n     *\n     * @param compress - if `true`, compresses the sending data\n     * @return self\n     * @public\n     */\n    compress(compress) {\n        this.flags.compress = compress;\n        return this;\n    }\n    /**\n     * Sets a modifier for a subsequent event emission that the event message will be dropped when this socket is not\n     * ready to send messages.\n     *\n     * @returns self\n     * @public\n     */\n    get volatile() {\n        this.flags.volatile = true;\n        return this;\n    }\n    /**\n     * Adds a listener that will be fired when any event is emitted. The event name is passed as the first argument to the\n     * callback.\n     *\n     * @param listener\n     * @public\n     */\n    onAny(listener) {\n        this._anyListeners = this._anyListeners || [];\n        this._anyListeners.push(listener);\n        return this;\n    }\n    /**\n     * Adds a listener that will be fired when any event is emitted. The event name is passed as the first argument to the\n     * callback. The listener is added to the beginning of the listeners array.\n     *\n     * @param listener\n     * @public\n     */\n    prependAny(listener) {\n        this._anyListeners = this._anyListeners || [];\n        this._anyListeners.unshift(listener);\n        return this;\n    }\n    /**\n     * Removes the listener that will be fired when any event is emitted.\n     *\n     * @param listener\n     * @public\n     */\n    offAny(listener) {\n        if (!this._anyListeners) {\n            return this;\n        }\n        if (listener) {\n            const listeners = this._anyListeners;\n            for (let i = 0; i < listeners.length; i++) {\n                if (listener === listeners[i]) {\n                    listeners.splice(i, 1);\n                    return this;\n                }\n            }\n        }\n        else {\n            this._anyListeners = [];\n        }\n        return this;\n    }\n    /**\n     * Returns an array of listeners that are listening for any event that is specified. This array can be manipulated,\n     * e.g. to remove listeners.\n     *\n     * @public\n     */\n    listenersAny() {\n        return this._anyListeners || [];\n    }\n}\nexports.Socket = Socket;\n","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.url = void 0;\nconst parseuri = require(\"parseuri\");\nconst debug = require(\"debug\")(\"socket.io-client:url\");\n/**\n * URL parser.\n *\n * @param uri - url\n * @param path - the request path of the connection\n * @param loc - An object meant to mimic window.location.\n *        Defaults to window.location.\n * @public\n */\nfunction url(uri, path = \"\", loc) {\n    let obj = uri;\n    // default to window.location\n    loc = loc || (typeof location !== \"undefined\" && location);\n    if (null == uri)\n        uri = loc.protocol + \"//\" + loc.host;\n    // relative path support\n    if (typeof uri === \"string\") {\n        if (\"/\" === uri.charAt(0)) {\n            if (\"/\" === uri.charAt(1)) {\n                uri = loc.protocol + uri;\n            }\n            else {\n                uri = loc.host + uri;\n            }\n        }\n        if (!/^(https?|wss?):\\/\\//.test(uri)) {\n            debug(\"protocol-less url %s\", uri);\n            if (\"undefined\" !== typeof loc) {\n                uri = loc.protocol + \"//\" + uri;\n            }\n            else {\n                uri = \"https://\" + uri;\n            }\n        }\n        // parse\n        debug(\"parse %s\", uri);\n        obj = parseuri(uri);\n    }\n    // make sure we treat `localhost:80` and `localhost` equally\n    if (!obj.port) {\n        if (/^(http|ws)$/.test(obj.protocol)) {\n            obj.port = \"80\";\n        }\n        else if (/^(http|ws)s$/.test(obj.protocol)) {\n            obj.port = \"443\";\n        }\n    }\n    obj.path = obj.path || \"/\";\n    const ipv6 = obj.host.indexOf(\":\") !== -1;\n    const host = ipv6 ? \"[\" + obj.host + \"]\" : obj.host;\n    // define unique id\n    obj.id = obj.protocol + \"://\" + host + \":\" + obj.port + path;\n    // define href\n    obj.href =\n        obj.protocol +\n            \"://\" +\n            host +\n            (loc && loc.port === obj.port ? \"\" : \":\" + obj.port);\n    return obj;\n}\nexports.url = url;\n","\n/**\n * Expose `Backoff`.\n */\n\nmodule.exports = Backoff;\n\n/**\n * Initialize backoff timer with `opts`.\n *\n * - `min` initial timeout in milliseconds [100]\n * - `max` max timeout [10000]\n * - `jitter` [0]\n * - `factor` [2]\n *\n * @param {Object} opts\n * @api public\n */\n\nfunction Backoff(opts) {\n  opts = opts || {};\n  this.ms = opts.min || 100;\n  this.max = opts.max || 10000;\n  this.factor = opts.factor || 2;\n  this.jitter = opts.jitter > 0 && opts.jitter <= 1 ? opts.jitter : 0;\n  this.attempts = 0;\n}\n\n/**\n * Return the backoff duration.\n *\n * @return {Number}\n * @api public\n */\n\nBackoff.prototype.duration = function(){\n  var ms = this.ms * Math.pow(this.factor, this.attempts++);\n  if (this.jitter) {\n    var rand =  Math.random();\n    var deviation = Math.floor(rand * this.jitter * ms);\n    ms = (Math.floor(rand * 10) & 1) == 0  ? ms - deviation : ms + deviation;\n  }\n  return Math.min(ms, this.max) | 0;\n};\n\n/**\n * Reset the number of attempts.\n *\n * @api public\n */\n\nBackoff.prototype.reset = function(){\n  this.attempts = 0;\n};\n\n/**\n * Set the minimum duration\n *\n * @api public\n */\n\nBackoff.prototype.setMin = function(min){\n  this.ms = min;\n};\n\n/**\n * Set the maximum duration\n *\n * @api public\n */\n\nBackoff.prototype.setMax = function(max){\n  this.max = max;\n};\n\n/**\n * Set the jitter\n *\n * @api public\n */\n\nBackoff.prototype.setJitter = function(jitter){\n  this.jitter = jitter;\n};\n\n","\r\n/**\r\n * Expose `Emitter`.\r\n */\r\n\r\nif (typeof module !== 'undefined') {\r\n  module.exports = Emitter;\r\n}\r\n\r\n/**\r\n * Initialize a new `Emitter`.\r\n *\r\n * @api public\r\n */\r\n\r\nfunction Emitter(obj) {\r\n  if (obj) return mixin(obj);\r\n};\r\n\r\n/**\r\n * Mixin the emitter properties.\r\n *\r\n * @param {Object} obj\r\n * @return {Object}\r\n * @api private\r\n */\r\n\r\nfunction mixin(obj) {\r\n  for (var key in Emitter.prototype) {\r\n    obj[key] = Emitter.prototype[key];\r\n  }\r\n  return obj;\r\n}\r\n\r\n/**\r\n * Listen on the given `event` with `fn`.\r\n *\r\n * @param {String} event\r\n * @param {Function} fn\r\n * @return {Emitter}\r\n * @api public\r\n */\r\n\r\nEmitter.prototype.on =\r\nEmitter.prototype.addEventListener = function(event, fn){\r\n  this._callbacks = this._callbacks || {};\r\n  (this._callbacks['$' + event] = this._callbacks['$' + event] || [])\r\n    .push(fn);\r\n  return this;\r\n};\r\n\r\n/**\r\n * Adds an `event` listener that will be invoked a single\r\n * time then automatically removed.\r\n *\r\n * @param {String} event\r\n * @param {Function} fn\r\n * @return {Emitter}\r\n * @api public\r\n */\r\n\r\nEmitter.prototype.once = function(event, fn){\r\n  function on() {\r\n    this.off(event, on);\r\n    fn.apply(this, arguments);\r\n  }\r\n\r\n  on.fn = fn;\r\n  this.on(event, on);\r\n  return this;\r\n};\r\n\r\n/**\r\n * Remove the given callback for `event` or all\r\n * registered callbacks.\r\n *\r\n * @param {String} event\r\n * @param {Function} fn\r\n * @return {Emitter}\r\n * @api public\r\n */\r\n\r\nEmitter.prototype.off =\r\nEmitter.prototype.removeListener =\r\nEmitter.prototype.removeAllListeners =\r\nEmitter.prototype.removeEventListener = function(event, fn){\r\n  this._callbacks = this._callbacks || {};\r\n\r\n  // all\r\n  if (0 == arguments.length) {\r\n    this._callbacks = {};\r\n    return this;\r\n  }\r\n\r\n  // specific event\r\n  var callbacks = this._callbacks['$' + event];\r\n  if (!callbacks) return this;\r\n\r\n  // remove all handlers\r\n  if (1 == arguments.length) {\r\n    delete this._callbacks['$' + event];\r\n    return this;\r\n  }\r\n\r\n  // remove specific handler\r\n  var cb;\r\n  for (var i = 0; i < callbacks.length; i++) {\r\n    cb = callbacks[i];\r\n    if (cb === fn || cb.fn === fn) {\r\n      callbacks.splice(i, 1);\r\n      break;\r\n    }\r\n  }\r\n\r\n  // Remove event specific arrays for event types that no\r\n  // one is subscribed for to avoid memory leak.\r\n  if (callbacks.length === 0) {\r\n    delete this._callbacks['$' + event];\r\n  }\r\n\r\n  return this;\r\n};\r\n\r\n/**\r\n * Emit `event` with the given args.\r\n *\r\n * @param {String} event\r\n * @param {Mixed} ...\r\n * @return {Emitter}\r\n */\r\n\r\nEmitter.prototype.emit = function(event){\r\n  this._callbacks = this._callbacks || {};\r\n\r\n  var args = new Array(arguments.length - 1)\r\n    , callbacks = this._callbacks['$' + event];\r\n\r\n  for (var i = 1; i < arguments.length; i++) {\r\n    args[i - 1] = arguments[i];\r\n  }\r\n\r\n  if (callbacks) {\r\n    callbacks = callbacks.slice(0);\r\n    for (var i = 0, len = callbacks.length; i < len; ++i) {\r\n      callbacks[i].apply(this, args);\r\n    }\r\n  }\r\n\r\n  return this;\r\n};\r\n\r\n/**\r\n * Return array of callbacks for `event`.\r\n *\r\n * @param {String} event\r\n * @return {Array}\r\n * @api public\r\n */\r\n\r\nEmitter.prototype.listeners = function(event){\r\n  this._callbacks = this._callbacks || {};\r\n  return this._callbacks['$' + event] || [];\r\n};\r\n\r\n/**\r\n * Check if this emitter has `event` handlers.\r\n *\r\n * @param {String} event\r\n * @return {Boolean}\r\n * @api public\r\n */\r\n\r\nEmitter.prototype.hasListeners = function(event){\r\n  return !! this.listeners(event).length;\r\n};\r\n","/* eslint-env browser */\n\n/**\n * This is the web browser implementation of `debug()`.\n */\n\nexports.formatArgs = formatArgs;\nexports.save = save;\nexports.load = load;\nexports.useColors = useColors;\nexports.storage = localstorage();\nexports.destroy = (() => {\n\tlet warned = false;\n\n\treturn () => {\n\t\tif (!warned) {\n\t\t\twarned = true;\n\t\t\tconsole.warn('Instance method `debug.destroy()` is deprecated and no longer does anything. It will be removed in the next major version of `debug`.');\n\t\t}\n\t};\n})();\n\n/**\n * Colors.\n */\n\nexports.colors = [\n\t'#0000CC',\n\t'#0000FF',\n\t'#0033CC',\n\t'#0033FF',\n\t'#0066CC',\n\t'#0066FF',\n\t'#0099CC',\n\t'#0099FF',\n\t'#00CC00',\n\t'#00CC33',\n\t'#00CC66',\n\t'#00CC99',\n\t'#00CCCC',\n\t'#00CCFF',\n\t'#3300CC',\n\t'#3300FF',\n\t'#3333CC',\n\t'#3333FF',\n\t'#3366CC',\n\t'#3366FF',\n\t'#3399CC',\n\t'#3399FF',\n\t'#33CC00',\n\t'#33CC33',\n\t'#33CC66',\n\t'#33CC99',\n\t'#33CCCC',\n\t'#33CCFF',\n\t'#6600CC',\n\t'#6600FF',\n\t'#6633CC',\n\t'#6633FF',\n\t'#66CC00',\n\t'#66CC33',\n\t'#9900CC',\n\t'#9900FF',\n\t'#9933CC',\n\t'#9933FF',\n\t'#99CC00',\n\t'#99CC33',\n\t'#CC0000',\n\t'#CC0033',\n\t'#CC0066',\n\t'#CC0099',\n\t'#CC00CC',\n\t'#CC00FF',\n\t'#CC3300',\n\t'#CC3333',\n\t'#CC3366',\n\t'#CC3399',\n\t'#CC33CC',\n\t'#CC33FF',\n\t'#CC6600',\n\t'#CC6633',\n\t'#CC9900',\n\t'#CC9933',\n\t'#CCCC00',\n\t'#CCCC33',\n\t'#FF0000',\n\t'#FF0033',\n\t'#FF0066',\n\t'#FF0099',\n\t'#FF00CC',\n\t'#FF00FF',\n\t'#FF3300',\n\t'#FF3333',\n\t'#FF3366',\n\t'#FF3399',\n\t'#FF33CC',\n\t'#FF33FF',\n\t'#FF6600',\n\t'#FF6633',\n\t'#FF9900',\n\t'#FF9933',\n\t'#FFCC00',\n\t'#FFCC33'\n];\n\n/**\n * Currently only WebKit-based Web Inspectors, Firefox >= v31,\n * and the Firebug extension (any Firefox version) are known\n * to support \"%c\" CSS customizations.\n *\n * TODO: add a `localStorage` variable to explicitly enable/disable colors\n */\n\n// eslint-disable-next-line complexity\nfunction useColors() {\n\t// NB: In an Electron preload script, document will be defined but not fully\n\t// initialized. Since we know we're in Chrome, we'll just detect this case\n\t// explicitly\n\tif (typeof window !== 'undefined' && window.process && (window.process.type === 'renderer' || window.process.__nwjs)) {\n\t\treturn true;\n\t}\n\n\t// Internet Explorer and Edge do not support colors.\n\tif (typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/(edge|trident)\\/(\\d+)/)) {\n\t\treturn false;\n\t}\n\n\t// Is webkit? http://stackoverflow.com/a/16459606/376773\n\t// document is undefined in react-native: https://github.com/facebook/react-native/pull/1632\n\treturn (typeof document !== 'undefined' && document.documentElement && document.documentElement.style && document.documentElement.style.WebkitAppearance) ||\n\t\t// Is firebug? http://stackoverflow.com/a/398120/376773\n\t\t(typeof window !== 'undefined' && window.console && (window.console.firebug || (window.console.exception && window.console.table))) ||\n\t\t// Is firefox >= v31?\n\t\t// https://developer.mozilla.org/en-US/docs/Tools/Web_Console#Styling_messages\n\t\t(typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/firefox\\/(\\d+)/) && parseInt(RegExp.$1, 10) >= 31) ||\n\t\t// Double check webkit in userAgent just in case we are in a worker\n\t\t(typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/applewebkit\\/(\\d+)/));\n}\n\n/**\n * Colorize log arguments if enabled.\n *\n * @api public\n */\n\nfunction formatArgs(args) {\n\targs[0] = (this.useColors ? '%c' : '') +\n\t\tthis.namespace +\n\t\t(this.useColors ? ' %c' : ' ') +\n\t\targs[0] +\n\t\t(this.useColors ? '%c ' : ' ') +\n\t\t'+' + module.exports.humanize(this.diff);\n\n\tif (!this.useColors) {\n\t\treturn;\n\t}\n\n\tconst c = 'color: ' + this.color;\n\targs.splice(1, 0, c, 'color: inherit');\n\n\t// The final \"%c\" is somewhat tricky, because there could be other\n\t// arguments passed either before or after the %c, so we need to\n\t// figure out the correct index to insert the CSS into\n\tlet index = 0;\n\tlet lastC = 0;\n\targs[0].replace(/%[a-zA-Z%]/g, match => {\n\t\tif (match === '%%') {\n\t\t\treturn;\n\t\t}\n\t\tindex++;\n\t\tif (match === '%c') {\n\t\t\t// We only are interested in the *last* %c\n\t\t\t// (the user may have provided their own)\n\t\t\tlastC = index;\n\t\t}\n\t});\n\n\targs.splice(lastC, 0, c);\n}\n\n/**\n * Invokes `console.debug()` when available.\n * No-op when `console.debug` is not a \"function\".\n * If `console.debug` is not available, falls back\n * to `console.log`.\n *\n * @api public\n */\nexports.log = console.debug || console.log || (() => {});\n\n/**\n * Save `namespaces`.\n *\n * @param {String} namespaces\n * @api private\n */\nfunction save(namespaces) {\n\ttry {\n\t\tif (namespaces) {\n\t\t\texports.storage.setItem('debug', namespaces);\n\t\t} else {\n\t\t\texports.storage.removeItem('debug');\n\t\t}\n\t} catch (error) {\n\t\t// Swallow\n\t\t// XXX (@Qix-) should we be logging these?\n\t}\n}\n\n/**\n * Load `namespaces`.\n *\n * @return {String} returns the previously persisted debug modes\n * @api private\n */\nfunction load() {\n\tlet r;\n\ttry {\n\t\tr = exports.storage.getItem('debug');\n\t} catch (error) {\n\t\t// Swallow\n\t\t// XXX (@Qix-) should we be logging these?\n\t}\n\n\t// If debug isn't set in LS, and we're in Electron, try to load $DEBUG\n\tif (!r && typeof process !== 'undefined' && 'env' in process) {\n\t\tr = process.env.DEBUG;\n\t}\n\n\treturn r;\n}\n\n/**\n * Localstorage attempts to return the localstorage.\n *\n * This is necessary because safari throws\n * when a user disables cookies/localstorage\n * and you attempt to access it.\n *\n * @return {LocalStorage}\n * @api private\n */\n\nfunction localstorage() {\n\ttry {\n\t\t// TVMLKit (Apple TV JS Runtime) does not have a window object, just localStorage in the global context\n\t\t// The Browser also has localStorage in the global context.\n\t\treturn localStorage;\n\t} catch (error) {\n\t\t// Swallow\n\t\t// XXX (@Qix-) should we be logging these?\n\t}\n}\n\nmodule.exports = require('./common')(exports);\n\nconst {formatters} = module.exports;\n\n/**\n * Map %j to `JSON.stringify()`, since no Web Inspectors do that by default.\n */\n\nformatters.j = function (v) {\n\ttry {\n\t\treturn JSON.stringify(v);\n\t} catch (error) {\n\t\treturn '[UnexpectedJSONParseError]: ' + error.message;\n\t}\n};\n","\n/**\n * This is the common logic for both the Node.js and web browser\n * implementations of `debug()`.\n */\n\nfunction setup(env) {\n\tcreateDebug.debug = createDebug;\n\tcreateDebug.default = createDebug;\n\tcreateDebug.coerce = coerce;\n\tcreateDebug.disable = disable;\n\tcreateDebug.enable = enable;\n\tcreateDebug.enabled = enabled;\n\tcreateDebug.humanize = require('ms');\n\tcreateDebug.destroy = destroy;\n\n\tObject.keys(env).forEach(key => {\n\t\tcreateDebug[key] = env[key];\n\t});\n\n\t/**\n\t* The currently active debug mode names, and names to skip.\n\t*/\n\n\tcreateDebug.names = [];\n\tcreateDebug.skips = [];\n\n\t/**\n\t* Map of special \"%n\" handling functions, for the debug \"format\" argument.\n\t*\n\t* Valid key names are a single, lower or upper-case letter, i.e. \"n\" and \"N\".\n\t*/\n\tcreateDebug.formatters = {};\n\n\t/**\n\t* Selects a color for a debug namespace\n\t* @param {String} namespace The namespace string for the for the debug instance to be colored\n\t* @return {Number|String} An ANSI color code for the given namespace\n\t* @api private\n\t*/\n\tfunction selectColor(namespace) {\n\t\tlet hash = 0;\n\n\t\tfor (let i = 0; i < namespace.length; i++) {\n\t\t\thash = ((hash << 5) - hash) + namespace.charCodeAt(i);\n\t\t\thash |= 0; // Convert to 32bit integer\n\t\t}\n\n\t\treturn createDebug.colors[Math.abs(hash) % createDebug.colors.length];\n\t}\n\tcreateDebug.selectColor = selectColor;\n\n\t/**\n\t* Create a debugger with the given `namespace`.\n\t*\n\t* @param {String} namespace\n\t* @return {Function}\n\t* @api public\n\t*/\n\tfunction createDebug(namespace) {\n\t\tlet prevTime;\n\t\tlet enableOverride = null;\n\n\t\tfunction debug(...args) {\n\t\t\t// Disabled?\n\t\t\tif (!debug.enabled) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tconst self = debug;\n\n\t\t\t// Set `diff` timestamp\n\t\t\tconst curr = Number(new Date());\n\t\t\tconst ms = curr - (prevTime || curr);\n\t\t\tself.diff = ms;\n\t\t\tself.prev = prevTime;\n\t\t\tself.curr = curr;\n\t\t\tprevTime = curr;\n\n\t\t\targs[0] = createDebug.coerce(args[0]);\n\n\t\t\tif (typeof args[0] !== 'string') {\n\t\t\t\t// Anything else let's inspect with %O\n\t\t\t\targs.unshift('%O');\n\t\t\t}\n\n\t\t\t// Apply any `formatters` transformations\n\t\t\tlet index = 0;\n\t\t\targs[0] = args[0].replace(/%([a-zA-Z%])/g, (match, format) => {\n\t\t\t\t// If we encounter an escaped % then don't increase the array index\n\t\t\t\tif (match === '%%') {\n\t\t\t\t\treturn '%';\n\t\t\t\t}\n\t\t\t\tindex++;\n\t\t\t\tconst formatter = createDebug.formatters[format];\n\t\t\t\tif (typeof formatter === 'function') {\n\t\t\t\t\tconst val = args[index];\n\t\t\t\t\tmatch = formatter.call(self, val);\n\n\t\t\t\t\t// Now we need to remove `args[index]` since it's inlined in the `format`\n\t\t\t\t\targs.splice(index, 1);\n\t\t\t\t\tindex--;\n\t\t\t\t}\n\t\t\t\treturn match;\n\t\t\t});\n\n\t\t\t// Apply env-specific formatting (colors, etc.)\n\t\t\tcreateDebug.formatArgs.call(self, args);\n\n\t\t\tconst logFn = self.log || createDebug.log;\n\t\t\tlogFn.apply(self, args);\n\t\t}\n\n\t\tdebug.namespace = namespace;\n\t\tdebug.useColors = createDebug.useColors();\n\t\tdebug.color = createDebug.selectColor(namespace);\n\t\tdebug.extend = extend;\n\t\tdebug.destroy = createDebug.destroy; // XXX Temporary. Will be removed in the next major release.\n\n\t\tObject.defineProperty(debug, 'enabled', {\n\t\t\tenumerable: true,\n\t\t\tconfigurable: false,\n\t\t\tget: () => enableOverride === null ? createDebug.enabled(namespace) : enableOverride,\n\t\t\tset: v => {\n\t\t\t\tenableOverride = v;\n\t\t\t}\n\t\t});\n\n\t\t// Env-specific initialization logic for debug instances\n\t\tif (typeof createDebug.init === 'function') {\n\t\t\tcreateDebug.init(debug);\n\t\t}\n\n\t\treturn debug;\n\t}\n\n\tfunction extend(namespace, delimiter) {\n\t\tconst newDebug = createDebug(this.namespace + (typeof delimiter === 'undefined' ? ':' : delimiter) + namespace);\n\t\tnewDebug.log = this.log;\n\t\treturn newDebug;\n\t}\n\n\t/**\n\t* Enables a debug mode by namespaces. This can include modes\n\t* separated by a colon and wildcards.\n\t*\n\t* @param {String} namespaces\n\t* @api public\n\t*/\n\tfunction enable(namespaces) {\n\t\tcreateDebug.save(namespaces);\n\n\t\tcreateDebug.names = [];\n\t\tcreateDebug.skips = [];\n\n\t\tlet i;\n\t\tconst split = (typeof namespaces === 'string' ? namespaces : '').split(/[\\s,]+/);\n\t\tconst len = split.length;\n\n\t\tfor (i = 0; i < len; i++) {\n\t\t\tif (!split[i]) {\n\t\t\t\t// ignore empty strings\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\tnamespaces = split[i].replace(/\\*/g, '.*?');\n\n\t\t\tif (namespaces[0] === '-') {\n\t\t\t\tcreateDebug.skips.push(new RegExp('^' + namespaces.substr(1) + '$'));\n\t\t\t} else {\n\t\t\t\tcreateDebug.names.push(new RegExp('^' + namespaces + '$'));\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t* Disable debug output.\n\t*\n\t* @return {String} namespaces\n\t* @api public\n\t*/\n\tfunction disable() {\n\t\tconst namespaces = [\n\t\t\t...createDebug.names.map(toNamespace),\n\t\t\t...createDebug.skips.map(toNamespace).map(namespace => '-' + namespace)\n\t\t].join(',');\n\t\tcreateDebug.enable('');\n\t\treturn namespaces;\n\t}\n\n\t/**\n\t* Returns true if the given mode name is enabled, false otherwise.\n\t*\n\t* @param {String} name\n\t* @return {Boolean}\n\t* @api public\n\t*/\n\tfunction enabled(name) {\n\t\tif (name[name.length - 1] === '*') {\n\t\t\treturn true;\n\t\t}\n\n\t\tlet i;\n\t\tlet len;\n\n\t\tfor (i = 0, len = createDebug.skips.length; i < len; i++) {\n\t\t\tif (createDebug.skips[i].test(name)) {\n\t\t\t\treturn false;\n\t\t\t}\n\t\t}\n\n\t\tfor (i = 0, len = createDebug.names.length; i < len; i++) {\n\t\t\tif (createDebug.names[i].test(name)) {\n\t\t\t\treturn true;\n\t\t\t}\n\t\t}\n\n\t\treturn false;\n\t}\n\n\t/**\n\t* Convert regexp to namespace\n\t*\n\t* @param {RegExp} regxep\n\t* @return {String} namespace\n\t* @api private\n\t*/\n\tfunction toNamespace(regexp) {\n\t\treturn regexp.toString()\n\t\t\t.substring(2, regexp.toString().length - 2)\n\t\t\t.replace(/\\.\\*\\?$/, '*');\n\t}\n\n\t/**\n\t* Coerce `val`.\n\t*\n\t* @param {Mixed} val\n\t* @return {Mixed}\n\t* @api private\n\t*/\n\tfunction coerce(val) {\n\t\tif (val instanceof Error) {\n\t\t\treturn val.stack || val.message;\n\t\t}\n\t\treturn val;\n\t}\n\n\t/**\n\t* XXX DO NOT USE. This is a temporary stub function.\n\t* XXX It WILL be removed in the next major release.\n\t*/\n\tfunction destroy() {\n\t\tconsole.warn('Instance method `debug.destroy()` is deprecated and no longer does anything. It will be removed in the next major version of `debug`.');\n\t}\n\n\tcreateDebug.enable(createDebug.load());\n\n\treturn createDebug;\n}\n\nmodule.exports = setup;\n","module.exports = (() => {\n  if (typeof self !== \"undefined\") {\n    return self;\n  } else if (typeof window !== \"undefined\") {\n    return window;\n  } else {\n    return Function(\"return this\")();\n  }\n})();\n","const Socket = require(\"./socket\");\n\nmodule.exports = (uri, opts) => new Socket(uri, opts);\n\n/**\n * Expose deps for legacy compatibility\n * and standalone browser access.\n */\n\nmodule.exports.Socket = Socket;\nmodule.exports.protocol = Socket.protocol; // this is an int\nmodule.exports.Transport = require(\"./transport\");\nmodule.exports.transports = require(\"./transports/index\");\nmodule.exports.parser = require(\"engine.io-parser\");\n","const transports = require(\"./transports/index\");\nconst Emitter = require(\"component-emitter\");\nconst debug = require(\"debug\")(\"engine.io-client:socket\");\nconst parser = require(\"engine.io-parser\");\nconst parseuri = require(\"parseuri\");\nconst parseqs = require(\"parseqs\");\n\nclass Socket extends Emitter {\n  /**\n   * Socket constructor.\n   *\n   * @param {String|Object} uri or options\n   * @param {Object} options\n   * @api public\n   */\n  constructor(uri, opts = {}) {\n    super();\n\n    if (uri && \"object\" === typeof uri) {\n      opts = uri;\n      uri = null;\n    }\n\n    if (uri) {\n      uri = parseuri(uri);\n      opts.hostname = uri.host;\n      opts.secure = uri.protocol === \"https\" || uri.protocol === \"wss\";\n      opts.port = uri.port;\n      if (uri.query) opts.query = uri.query;\n    } else if (opts.host) {\n      opts.hostname = parseuri(opts.host).host;\n    }\n\n    this.secure =\n      null != opts.secure\n        ? opts.secure\n        : typeof location !== \"undefined\" && \"https:\" === location.protocol;\n\n    if (opts.hostname && !opts.port) {\n      // if no port is specified manually, use the protocol default\n      opts.port = this.secure ? \"443\" : \"80\";\n    }\n\n    this.hostname =\n      opts.hostname ||\n      (typeof location !== \"undefined\" ? location.hostname : \"localhost\");\n    this.port =\n      opts.port ||\n      (typeof location !== \"undefined\" && location.port\n        ? location.port\n        : this.secure\n        ? 443\n        : 80);\n\n    this.transports = opts.transports || [\"polling\", \"websocket\"];\n    this.readyState = \"\";\n    this.writeBuffer = [];\n    this.prevBufferLen = 0;\n\n    this.opts = Object.assign(\n      {\n        path: \"/engine.io\",\n        agent: false,\n        withCredentials: false,\n        upgrade: true,\n        jsonp: true,\n        timestampParam: \"t\",\n        rememberUpgrade: false,\n        rejectUnauthorized: true,\n        perMessageDeflate: {\n          threshold: 1024\n        },\n        transportOptions: {}\n      },\n      opts\n    );\n\n    this.opts.path = this.opts.path.replace(/\\/$/, \"\") + \"/\";\n\n    if (typeof this.opts.query === \"string\") {\n      this.opts.query = parseqs.decode(this.opts.query);\n    }\n\n    // set on handshake\n    this.id = null;\n    this.upgrades = null;\n    this.pingInterval = null;\n    this.pingTimeout = null;\n\n    // set on heartbeat\n    this.pingTimeoutTimer = null;\n\n    if (typeof addEventListener === \"function\") {\n      addEventListener(\n        \"beforeunload\",\n        () => {\n          if (this.transport) {\n            // silently close the transport\n            this.transport.removeAllListeners();\n            this.transport.close();\n          }\n        },\n        false\n      );\n    }\n\n    this.open();\n  }\n\n  /**\n   * Creates transport of the given type.\n   *\n   * @param {String} transport name\n   * @return {Transport}\n   * @api private\n   */\n  createTransport(name) {\n    debug('creating transport \"%s\"', name);\n    const query = clone(this.opts.query);\n\n    // append engine.io protocol identifier\n    query.EIO = parser.protocol;\n\n    // transport name\n    query.transport = name;\n\n    // session id if we already have one\n    if (this.id) query.sid = this.id;\n\n    const opts = Object.assign(\n      {},\n      this.opts.transportOptions[name],\n      this.opts,\n      {\n        query,\n        socket: this,\n        hostname: this.hostname,\n        secure: this.secure,\n        port: this.port\n      }\n    );\n\n    debug(\"options: %j\", opts);\n\n    return new transports[name](opts);\n  }\n\n  /**\n   * Initializes transport to use and starts probe.\n   *\n   * @api private\n   */\n  open() {\n    let transport;\n    if (\n      this.opts.rememberUpgrade &&\n      Socket.priorWebsocketSuccess &&\n      this.transports.indexOf(\"websocket\") !== -1\n    ) {\n      transport = \"websocket\";\n    } else if (0 === this.transports.length) {\n      // Emit error on next tick so it can be listened to\n      const self = this;\n      setTimeout(function() {\n        self.emit(\"error\", \"No transports available\");\n      }, 0);\n      return;\n    } else {\n      transport = this.transports[0];\n    }\n    this.readyState = \"opening\";\n\n    // Retry with the next transport if the transport is disabled (jsonp: false)\n    try {\n      transport = this.createTransport(transport);\n    } catch (e) {\n      debug(\"error while creating transport: %s\", e);\n      this.transports.shift();\n      this.open();\n      return;\n    }\n\n    transport.open();\n    this.setTransport(transport);\n  }\n\n  /**\n   * Sets the current transport. Disables the existing one (if any).\n   *\n   * @api private\n   */\n  setTransport(transport) {\n    debug(\"setting transport %s\", transport.name);\n    const self = this;\n\n    if (this.transport) {\n      debug(\"clearing existing transport %s\", this.transport.name);\n      this.transport.removeAllListeners();\n    }\n\n    // set up transport\n    this.transport = transport;\n\n    // set up transport listeners\n    transport\n      .on(\"drain\", function() {\n        self.onDrain();\n      })\n      .on(\"packet\", function(packet) {\n        self.onPacket(packet);\n      })\n      .on(\"error\", function(e) {\n        self.onError(e);\n      })\n      .on(\"close\", function() {\n        self.onClose(\"transport close\");\n      });\n  }\n\n  /**\n   * Probes a transport.\n   *\n   * @param {String} transport name\n   * @api private\n   */\n  probe(name) {\n    debug('probing transport \"%s\"', name);\n    let transport = this.createTransport(name, { probe: 1 });\n    let failed = false;\n    const self = this;\n\n    Socket.priorWebsocketSuccess = false;\n\n    function onTransportOpen() {\n      if (self.onlyBinaryUpgrades) {\n        const upgradeLosesBinary =\n          !this.supportsBinary && self.transport.supportsBinary;\n        failed = failed || upgradeLosesBinary;\n      }\n      if (failed) return;\n\n      debug('probe transport \"%s\" opened', name);\n      transport.send([{ type: \"ping\", data: \"probe\" }]);\n      transport.once(\"packet\", function(msg) {\n        if (failed) return;\n        if (\"pong\" === msg.type && \"probe\" === msg.data) {\n          debug('probe transport \"%s\" pong', name);\n          self.upgrading = true;\n          self.emit(\"upgrading\", transport);\n          if (!transport) return;\n          Socket.priorWebsocketSuccess = \"websocket\" === transport.name;\n\n          debug('pausing current transport \"%s\"', self.transport.name);\n          self.transport.pause(function() {\n            if (failed) return;\n            if (\"closed\" === self.readyState) return;\n            debug(\"changing transport and sending upgrade packet\");\n\n            cleanup();\n\n            self.setTransport(transport);\n            transport.send([{ type: \"upgrade\" }]);\n            self.emit(\"upgrade\", transport);\n            transport = null;\n            self.upgrading = false;\n            self.flush();\n          });\n        } else {\n          debug('probe transport \"%s\" failed', name);\n          const err = new Error(\"probe error\");\n          err.transport = transport.name;\n          self.emit(\"upgradeError\", err);\n        }\n      });\n    }\n\n    function freezeTransport() {\n      if (failed) return;\n\n      // Any callback called by transport should be ignored since now\n      failed = true;\n\n      cleanup();\n\n      transport.close();\n      transport = null;\n    }\n\n    // Handle any error that happens while probing\n    function onerror(err) {\n      const error = new Error(\"probe error: \" + err);\n      error.transport = transport.name;\n\n      freezeTransport();\n\n      debug('probe transport \"%s\" failed because of error: %s', name, err);\n\n      self.emit(\"upgradeError\", error);\n    }\n\n    function onTransportClose() {\n      onerror(\"transport closed\");\n    }\n\n    // When the socket is closed while we're probing\n    function onclose() {\n      onerror(\"socket closed\");\n    }\n\n    // When the socket is upgraded while we're probing\n    function onupgrade(to) {\n      if (transport && to.name !== transport.name) {\n        debug('\"%s\" works - aborting \"%s\"', to.name, transport.name);\n        freezeTransport();\n      }\n    }\n\n    // Remove all listeners on the transport and on self\n    function cleanup() {\n      transport.removeListener(\"open\", onTransportOpen);\n      transport.removeListener(\"error\", onerror);\n      transport.removeListener(\"close\", onTransportClose);\n      self.removeListener(\"close\", onclose);\n      self.removeListener(\"upgrading\", onupgrade);\n    }\n\n    transport.once(\"open\", onTransportOpen);\n    transport.once(\"error\", onerror);\n    transport.once(\"close\", onTransportClose);\n\n    this.once(\"close\", onclose);\n    this.once(\"upgrading\", onupgrade);\n\n    transport.open();\n  }\n\n  /**\n   * Called when connection is deemed open.\n   *\n   * @api public\n   */\n  onOpen() {\n    debug(\"socket open\");\n    this.readyState = \"open\";\n    Socket.priorWebsocketSuccess = \"websocket\" === this.transport.name;\n    this.emit(\"open\");\n    this.flush();\n\n    // we check for `readyState` in case an `open`\n    // listener already closed the socket\n    if (\n      \"open\" === this.readyState &&\n      this.opts.upgrade &&\n      this.transport.pause\n    ) {\n      debug(\"starting upgrade probes\");\n      let i = 0;\n      const l = this.upgrades.length;\n      for (; i < l; i++) {\n        this.probe(this.upgrades[i]);\n      }\n    }\n  }\n\n  /**\n   * Handles a packet.\n   *\n   * @api private\n   */\n  onPacket(packet) {\n    if (\n      \"opening\" === this.readyState ||\n      \"open\" === this.readyState ||\n      \"closing\" === this.readyState\n    ) {\n      debug('socket receive: type \"%s\", data \"%s\"', packet.type, packet.data);\n\n      this.emit(\"packet\", packet);\n\n      // Socket is live - any packet counts\n      this.emit(\"heartbeat\");\n\n      switch (packet.type) {\n        case \"open\":\n          this.onHandshake(JSON.parse(packet.data));\n          break;\n\n        case \"ping\":\n          this.resetPingTimeout();\n          this.sendPacket(\"pong\");\n          this.emit(\"pong\");\n          break;\n\n        case \"error\":\n          const err = new Error(\"server error\");\n          err.code = packet.data;\n          this.onError(err);\n          break;\n\n        case \"message\":\n          this.emit(\"data\", packet.data);\n          this.emit(\"message\", packet.data);\n          break;\n      }\n    } else {\n      debug('packet received with socket readyState \"%s\"', this.readyState);\n    }\n  }\n\n  /**\n   * Called upon handshake completion.\n   *\n   * @param {Object} handshake obj\n   * @api private\n   */\n  onHandshake(data) {\n    this.emit(\"handshake\", data);\n    this.id = data.sid;\n    this.transport.query.sid = data.sid;\n    this.upgrades = this.filterUpgrades(data.upgrades);\n    this.pingInterval = data.pingInterval;\n    this.pingTimeout = data.pingTimeout;\n    this.onOpen();\n    // In case open handler closes socket\n    if (\"closed\" === this.readyState) return;\n    this.resetPingTimeout();\n  }\n\n  /**\n   * Sets and resets ping timeout timer based on server pings.\n   *\n   * @api private\n   */\n  resetPingTimeout() {\n    clearTimeout(this.pingTimeoutTimer);\n    this.pingTimeoutTimer = setTimeout(() => {\n      this.onClose(\"ping timeout\");\n    }, this.pingInterval + this.pingTimeout);\n  }\n\n  /**\n   * Called on `drain` event\n   *\n   * @api private\n   */\n  onDrain() {\n    this.writeBuffer.splice(0, this.prevBufferLen);\n\n    // setting prevBufferLen = 0 is very important\n    // for example, when upgrading, upgrade packet is sent over,\n    // and a nonzero prevBufferLen could cause problems on `drain`\n    this.prevBufferLen = 0;\n\n    if (0 === this.writeBuffer.length) {\n      this.emit(\"drain\");\n    } else {\n      this.flush();\n    }\n  }\n\n  /**\n   * Flush write buffers.\n   *\n   * @api private\n   */\n  flush() {\n    if (\n      \"closed\" !== this.readyState &&\n      this.transport.writable &&\n      !this.upgrading &&\n      this.writeBuffer.length\n    ) {\n      debug(\"flushing %d packets in socket\", this.writeBuffer.length);\n      this.transport.send(this.writeBuffer);\n      // keep track of current length of writeBuffer\n      // splice writeBuffer and callbackBuffer on `drain`\n      this.prevBufferLen = this.writeBuffer.length;\n      this.emit(\"flush\");\n    }\n  }\n\n  /**\n   * Sends a message.\n   *\n   * @param {String} message.\n   * @param {Function} callback function.\n   * @param {Object} options.\n   * @return {Socket} for chaining.\n   * @api public\n   */\n  write(msg, options, fn) {\n    this.sendPacket(\"message\", msg, options, fn);\n    return this;\n  }\n\n  send(msg, options, fn) {\n    this.sendPacket(\"message\", msg, options, fn);\n    return this;\n  }\n\n  /**\n   * Sends a packet.\n   *\n   * @param {String} packet type.\n   * @param {String} data.\n   * @param {Object} options.\n   * @param {Function} callback function.\n   * @api private\n   */\n  sendPacket(type, data, options, fn) {\n    if (\"function\" === typeof data) {\n      fn = data;\n      data = undefined;\n    }\n\n    if (\"function\" === typeof options) {\n      fn = options;\n      options = null;\n    }\n\n    if (\"closing\" === this.readyState || \"closed\" === this.readyState) {\n      return;\n    }\n\n    options = options || {};\n    options.compress = false !== options.compress;\n\n    const packet = {\n      type: type,\n      data: data,\n      options: options\n    };\n    this.emit(\"packetCreate\", packet);\n    this.writeBuffer.push(packet);\n    if (fn) this.once(\"flush\", fn);\n    this.flush();\n  }\n\n  /**\n   * Closes the connection.\n   *\n   * @api private\n   */\n  close() {\n    const self = this;\n\n    if (\"opening\" === this.readyState || \"open\" === this.readyState) {\n      this.readyState = \"closing\";\n\n      if (this.writeBuffer.length) {\n        this.once(\"drain\", function() {\n          if (this.upgrading) {\n            waitForUpgrade();\n          } else {\n            close();\n          }\n        });\n      } else if (this.upgrading) {\n        waitForUpgrade();\n      } else {\n        close();\n      }\n    }\n\n    function close() {\n      self.onClose(\"forced close\");\n      debug(\"socket closing - telling transport to close\");\n      self.transport.close();\n    }\n\n    function cleanupAndClose() {\n      self.removeListener(\"upgrade\", cleanupAndClose);\n      self.removeListener(\"upgradeError\", cleanupAndClose);\n      close();\n    }\n\n    function waitForUpgrade() {\n      // wait for upgrade to finish since we can't send packets while pausing a transport\n      self.once(\"upgrade\", cleanupAndClose);\n      self.once(\"upgradeError\", cleanupAndClose);\n    }\n\n    return this;\n  }\n\n  /**\n   * Called upon transport error\n   *\n   * @api private\n   */\n  onError(err) {\n    debug(\"socket error %j\", err);\n    Socket.priorWebsocketSuccess = false;\n    this.emit(\"error\", err);\n    this.onClose(\"transport error\", err);\n  }\n\n  /**\n   * Called upon transport close.\n   *\n   * @api private\n   */\n  onClose(reason, desc) {\n    if (\n      \"opening\" === this.readyState ||\n      \"open\" === this.readyState ||\n      \"closing\" === this.readyState\n    ) {\n      debug('socket close with reason: \"%s\"', reason);\n      const self = this;\n\n      // clear timers\n      clearTimeout(this.pingIntervalTimer);\n      clearTimeout(this.pingTimeoutTimer);\n\n      // stop event from firing again for transport\n      this.transport.removeAllListeners(\"close\");\n\n      // ensure transport won't stay open\n      this.transport.close();\n\n      // ignore further transport communication\n      this.transport.removeAllListeners();\n\n      // set ready state\n      this.readyState = \"closed\";\n\n      // clear session id\n      this.id = null;\n\n      // emit close event\n      this.emit(\"close\", reason, desc);\n\n      // clean buffers after, so users can still\n      // grab the buffers on `close` event\n      self.writeBuffer = [];\n      self.prevBufferLen = 0;\n    }\n  }\n\n  /**\n   * Filters upgrades, returning only those matching client transports.\n   *\n   * @param {Array} server upgrades\n   * @api private\n   *\n   */\n  filterUpgrades(upgrades) {\n    const filteredUpgrades = [];\n    let i = 0;\n    const j = upgrades.length;\n    for (; i < j; i++) {\n      if (~this.transports.indexOf(upgrades[i]))\n        filteredUpgrades.push(upgrades[i]);\n    }\n    return filteredUpgrades;\n  }\n}\n\nSocket.priorWebsocketSuccess = false;\n\n/**\n * Protocol version.\n *\n * @api public\n */\n\nSocket.protocol = parser.protocol; // this is an int\n\nfunction clone(obj) {\n  const o = {};\n  for (let i in obj) {\n    if (obj.hasOwnProperty(i)) {\n      o[i] = obj[i];\n    }\n  }\n  return o;\n}\n\nmodule.exports = Socket;\n","const parser = require(\"engine.io-parser\");\nconst Emitter = require(\"component-emitter\");\n\nclass Transport extends Emitter {\n  /**\n   * Transport abstract constructor.\n   *\n   * @param {Object} options.\n   * @api private\n   */\n  constructor(opts) {\n    super();\n\n    this.opts = opts;\n    this.query = opts.query;\n    this.readyState = \"\";\n    this.socket = opts.socket;\n  }\n\n  /**\n   * Emits an error.\n   *\n   * @param {String} str\n   * @return {Transport} for chaining\n   * @api public\n   */\n  onError(msg, desc) {\n    const err = new Error(msg);\n    err.type = \"TransportError\";\n    err.description = desc;\n    this.emit(\"error\", err);\n    return this;\n  }\n\n  /**\n   * Opens the transport.\n   *\n   * @api public\n   */\n  open() {\n    if (\"closed\" === this.readyState || \"\" === this.readyState) {\n      this.readyState = \"opening\";\n      this.doOpen();\n    }\n\n    return this;\n  }\n\n  /**\n   * Closes the transport.\n   *\n   * @api private\n   */\n  close() {\n    if (\"opening\" === this.readyState || \"open\" === this.readyState) {\n      this.doClose();\n      this.onClose();\n    }\n\n    return this;\n  }\n\n  /**\n   * Sends multiple packets.\n   *\n   * @param {Array} packets\n   * @api private\n   */\n  send(packets) {\n    if (\"open\" === this.readyState) {\n      this.write(packets);\n    } else {\n      throw new Error(\"Transport not open\");\n    }\n  }\n\n  /**\n   * Called upon open\n   *\n   * @api private\n   */\n  onOpen() {\n    this.readyState = \"open\";\n    this.writable = true;\n    this.emit(\"open\");\n  }\n\n  /**\n   * Called with data.\n   *\n   * @param {String} data\n   * @api private\n   */\n  onData(data) {\n    const packet = parser.decodePacket(data, this.socket.binaryType);\n    this.onPacket(packet);\n  }\n\n  /**\n   * Called with a decoded packet.\n   */\n  onPacket(packet) {\n    this.emit(\"packet\", packet);\n  }\n\n  /**\n   * Called upon close.\n   *\n   * @api private\n   */\n  onClose() {\n    this.readyState = \"closed\";\n    this.emit(\"close\");\n  }\n}\n\nmodule.exports = Transport;\n","const XMLHttpRequest = require(\"xmlhttprequest-ssl\");\nconst XHR = require(\"./polling-xhr\");\nconst JSONP = require(\"./polling-jsonp\");\nconst websocket = require(\"./websocket\");\n\nexports.polling = polling;\nexports.websocket = websocket;\n\n/**\n * Polling transport polymorphic constructor.\n * Decides on xhr vs jsonp based on feature detection.\n *\n * @api private\n */\n\nfunction polling(opts) {\n  let xhr;\n  let xd = false;\n  let xs = false;\n  const jsonp = false !== opts.jsonp;\n\n  if (typeof location !== \"undefined\") {\n    const isSSL = \"https:\" === location.protocol;\n    let port = location.port;\n\n    // some user agents have empty `location.port`\n    if (!port) {\n      port = isSSL ? 443 : 80;\n    }\n\n    xd = opts.hostname !== location.hostname || port !== opts.port;\n    xs = opts.secure !== isSSL;\n  }\n\n  opts.xdomain = xd;\n  opts.xscheme = xs;\n  xhr = new XMLHttpRequest(opts);\n\n  if (\"open\" in xhr && !opts.forceJSONP) {\n    return new XHR(opts);\n  } else {\n    if (!jsonp) throw new Error(\"JSONP disabled\");\n    return new JSONP(opts);\n  }\n}\n","const Polling = require(\"./polling\");\nconst globalThis = require(\"../globalThis\");\n\nconst rNewline = /\\n/g;\nconst rEscapedNewline = /\\\\n/g;\n\n/**\n * Global JSONP callbacks.\n */\n\nlet callbacks;\n\nclass JSONPPolling extends Polling {\n  /**\n   * JSONP Polling constructor.\n   *\n   * @param {Object} opts.\n   * @api public\n   */\n  constructor(opts) {\n    super(opts);\n\n    this.query = this.query || {};\n\n    // define global callbacks array if not present\n    // we do this here (lazily) to avoid unneeded global pollution\n    if (!callbacks) {\n      // we need to consider multiple engines in the same page\n      callbacks = globalThis.___eio = globalThis.___eio || [];\n    }\n\n    // callback identifier\n    this.index = callbacks.length;\n\n    // add callback to jsonp global\n    const self = this;\n    callbacks.push(function(msg) {\n      self.onData(msg);\n    });\n\n    // append to query string\n    this.query.j = this.index;\n  }\n\n  /**\n   * JSONP only supports binary as base64 encoded strings\n   */\n  get supportsBinary() {\n    return false;\n  }\n\n  /**\n   * Closes the socket.\n   *\n   * @api private\n   */\n  doClose() {\n    if (this.script) {\n      // prevent spurious errors from being emitted when the window is unloaded\n      this.script.onerror = () => {};\n      this.script.parentNode.removeChild(this.script);\n      this.script = null;\n    }\n\n    if (this.form) {\n      this.form.parentNode.removeChild(this.form);\n      this.form = null;\n      this.iframe = null;\n    }\n\n    super.doClose();\n  }\n\n  /**\n   * Starts a poll cycle.\n   *\n   * @api private\n   */\n  doPoll() {\n    const self = this;\n    const script = document.createElement(\"script\");\n\n    if (this.script) {\n      this.script.parentNode.removeChild(this.script);\n      this.script = null;\n    }\n\n    script.async = true;\n    script.src = this.uri();\n    script.onerror = function(e) {\n      self.onError(\"jsonp poll error\", e);\n    };\n\n    const insertAt = document.getElementsByTagName(\"script\")[0];\n    if (insertAt) {\n      insertAt.parentNode.insertBefore(script, insertAt);\n    } else {\n      (document.head || document.body).appendChild(script);\n    }\n    this.script = script;\n\n    const isUAgecko =\n      \"undefined\" !== typeof navigator && /gecko/i.test(navigator.userAgent);\n\n    if (isUAgecko) {\n      setTimeout(function() {\n        const iframe = document.createElement(\"iframe\");\n        document.body.appendChild(iframe);\n        document.body.removeChild(iframe);\n      }, 100);\n    }\n  }\n\n  /**\n   * Writes with a hidden iframe.\n   *\n   * @param {String} data to send\n   * @param {Function} called upon flush.\n   * @api private\n   */\n  doWrite(data, fn) {\n    const self = this;\n    let iframe;\n\n    if (!this.form) {\n      const form = document.createElement(\"form\");\n      const area = document.createElement(\"textarea\");\n      const id = (this.iframeId = \"eio_iframe_\" + this.index);\n\n      form.className = \"socketio\";\n      form.style.position = \"absolute\";\n      form.style.top = \"-1000px\";\n      form.style.left = \"-1000px\";\n      form.target = id;\n      form.method = \"POST\";\n      form.setAttribute(\"accept-charset\", \"utf-8\");\n      area.name = \"d\";\n      form.appendChild(area);\n      document.body.appendChild(form);\n\n      this.form = form;\n      this.area = area;\n    }\n\n    this.form.action = this.uri();\n\n    function complete() {\n      initIframe();\n      fn();\n    }\n\n    function initIframe() {\n      if (self.iframe) {\n        try {\n          self.form.removeChild(self.iframe);\n        } catch (e) {\n          self.onError(\"jsonp polling iframe removal error\", e);\n        }\n      }\n\n      try {\n        // ie6 dynamic iframes with target=\"\" support (thanks Chris Lambacher)\n        const html = '<iframe src=\"javascript:0\" name=\"' + self.iframeId + '\">';\n        iframe = document.createElement(html);\n      } catch (e) {\n        iframe = document.createElement(\"iframe\");\n        iframe.name = self.iframeId;\n        iframe.src = \"javascript:0\";\n      }\n\n      iframe.id = self.iframeId;\n\n      self.form.appendChild(iframe);\n      self.iframe = iframe;\n    }\n\n    initIframe();\n\n    // escape \\n to prevent it from being converted into \\r\\n by some UAs\n    // double escaping is required for escaped new lines because unescaping of new lines can be done safely on server-side\n    data = data.replace(rEscapedNewline, \"\\\\\\n\");\n    this.area.value = data.replace(rNewline, \"\\\\n\");\n\n    try {\n      this.form.submit();\n    } catch (e) {}\n\n    if (this.iframe.attachEvent) {\n      this.iframe.onreadystatechange = function() {\n        if (self.iframe.readyState === \"complete\") {\n          complete();\n        }\n      };\n    } else {\n      this.iframe.onload = complete;\n    }\n  }\n}\n\nmodule.exports = JSONPPolling;\n","/* global attachEvent */\n\nconst XMLHttpRequest = require(\"xmlhttprequest-ssl\");\nconst Polling = require(\"./polling\");\nconst Emitter = require(\"component-emitter\");\nconst { pick } = require(\"../util\");\nconst globalThis = require(\"../globalThis\");\n\nconst debug = require(\"debug\")(\"engine.io-client:polling-xhr\");\n\n/**\n * Empty function\n */\n\nfunction empty() {}\n\nconst hasXHR2 = (function() {\n  const xhr = new XMLHttpRequest({ xdomain: false });\n  return null != xhr.responseType;\n})();\n\nclass XHR extends Polling {\n  /**\n   * XHR Polling constructor.\n   *\n   * @param {Object} opts\n   * @api public\n   */\n  constructor(opts) {\n    super(opts);\n\n    if (typeof location !== \"undefined\") {\n      const isSSL = \"https:\" === location.protocol;\n      let port = location.port;\n\n      // some user agents have empty `location.port`\n      if (!port) {\n        port = isSSL ? 443 : 80;\n      }\n\n      this.xd =\n        (typeof location !== \"undefined\" &&\n          opts.hostname !== location.hostname) ||\n        port !== opts.port;\n      this.xs = opts.secure !== isSSL;\n    }\n    /**\n     * XHR supports binary\n     */\n    const forceBase64 = opts && opts.forceBase64;\n    this.supportsBinary = hasXHR2 && !forceBase64;\n  }\n\n  /**\n   * Creates a request.\n   *\n   * @param {String} method\n   * @api private\n   */\n  request(opts = {}) {\n    Object.assign(opts, { xd: this.xd, xs: this.xs }, this.opts);\n    return new Request(this.uri(), opts);\n  }\n\n  /**\n   * Sends data.\n   *\n   * @param {String} data to send.\n   * @param {Function} called upon flush.\n   * @api private\n   */\n  doWrite(data, fn) {\n    const req = this.request({\n      method: \"POST\",\n      data: data\n    });\n    const self = this;\n    req.on(\"success\", fn);\n    req.on(\"error\", function(err) {\n      self.onError(\"xhr post error\", err);\n    });\n  }\n\n  /**\n   * Starts a poll cycle.\n   *\n   * @api private\n   */\n  doPoll() {\n    debug(\"xhr poll\");\n    const req = this.request();\n    const self = this;\n    req.on(\"data\", function(data) {\n      self.onData(data);\n    });\n    req.on(\"error\", function(err) {\n      self.onError(\"xhr poll error\", err);\n    });\n    this.pollXhr = req;\n  }\n}\n\nclass Request extends Emitter {\n  /**\n   * Request constructor\n   *\n   * @param {Object} options\n   * @api public\n   */\n  constructor(uri, opts) {\n    super();\n    this.opts = opts;\n\n    this.method = opts.method || \"GET\";\n    this.uri = uri;\n    this.async = false !== opts.async;\n    this.data = undefined !== opts.data ? opts.data : null;\n\n    this.create();\n  }\n\n  /**\n   * Creates the XHR object and sends the request.\n   *\n   * @api private\n   */\n  create() {\n    const opts = pick(\n      this.opts,\n      \"agent\",\n      \"enablesXDR\",\n      \"pfx\",\n      \"key\",\n      \"passphrase\",\n      \"cert\",\n      \"ca\",\n      \"ciphers\",\n      \"rejectUnauthorized\"\n    );\n    opts.xdomain = !!this.opts.xd;\n    opts.xscheme = !!this.opts.xs;\n\n    const xhr = (this.xhr = new XMLHttpRequest(opts));\n    const self = this;\n\n    try {\n      debug(\"xhr open %s: %s\", this.method, this.uri);\n      xhr.open(this.method, this.uri, this.async);\n      try {\n        if (this.opts.extraHeaders) {\n          xhr.setDisableHeaderCheck && xhr.setDisableHeaderCheck(true);\n          for (let i in this.opts.extraHeaders) {\n            if (this.opts.extraHeaders.hasOwnProperty(i)) {\n              xhr.setRequestHeader(i, this.opts.extraHeaders[i]);\n            }\n          }\n        }\n      } catch (e) {}\n\n      if (\"POST\" === this.method) {\n        try {\n          xhr.setRequestHeader(\"Content-type\", \"text/plain;charset=UTF-8\");\n        } catch (e) {}\n      }\n\n      try {\n        xhr.setRequestHeader(\"Accept\", \"*/*\");\n      } catch (e) {}\n\n      // ie6 check\n      if (\"withCredentials\" in xhr) {\n        xhr.withCredentials = this.opts.withCredentials;\n      }\n\n      if (this.opts.requestTimeout) {\n        xhr.timeout = this.opts.requestTimeout;\n      }\n\n      if (this.hasXDR()) {\n        xhr.onload = function() {\n          self.onLoad();\n        };\n        xhr.onerror = function() {\n          self.onError(xhr.responseText);\n        };\n      } else {\n        xhr.onreadystatechange = function() {\n          if (4 !== xhr.readyState) return;\n          if (200 === xhr.status || 1223 === xhr.status) {\n            self.onLoad();\n          } else {\n            // make sure the `error` event handler that's user-set\n            // does not throw in the same tick and gets caught here\n            setTimeout(function() {\n              self.onError(typeof xhr.status === \"number\" ? xhr.status : 0);\n            }, 0);\n          }\n        };\n      }\n\n      debug(\"xhr data %s\", this.data);\n      xhr.send(this.data);\n    } catch (e) {\n      // Need to defer since .create() is called directly from the constructor\n      // and thus the 'error' event can only be only bound *after* this exception\n      // occurs.  Therefore, also, we cannot throw here at all.\n      setTimeout(function() {\n        self.onError(e);\n      }, 0);\n      return;\n    }\n\n    if (typeof document !== \"undefined\") {\n      this.index = Request.requestsCount++;\n      Request.requests[this.index] = this;\n    }\n  }\n\n  /**\n   * Called upon successful response.\n   *\n   * @api private\n   */\n  onSuccess() {\n    this.emit(\"success\");\n    this.cleanup();\n  }\n\n  /**\n   * Called if we have data.\n   *\n   * @api private\n   */\n  onData(data) {\n    this.emit(\"data\", data);\n    this.onSuccess();\n  }\n\n  /**\n   * Called upon error.\n   *\n   * @api private\n   */\n  onError(err) {\n    this.emit(\"error\", err);\n    this.cleanup(true);\n  }\n\n  /**\n   * Cleans up house.\n   *\n   * @api private\n   */\n  cleanup(fromError) {\n    if (\"undefined\" === typeof this.xhr || null === this.xhr) {\n      return;\n    }\n    // xmlhttprequest\n    if (this.hasXDR()) {\n      this.xhr.onload = this.xhr.onerror = empty;\n    } else {\n      this.xhr.onreadystatechange = empty;\n    }\n\n    if (fromError) {\n      try {\n        this.xhr.abort();\n      } catch (e) {}\n    }\n\n    if (typeof document !== \"undefined\") {\n      delete Request.requests[this.index];\n    }\n\n    this.xhr = null;\n  }\n\n  /**\n   * Called upon load.\n   *\n   * @api private\n   */\n  onLoad() {\n    const data = this.xhr.responseText;\n    if (data !== null) {\n      this.onData(data);\n    }\n  }\n\n  /**\n   * Check if it has XDomainRequest.\n   *\n   * @api private\n   */\n  hasXDR() {\n    return typeof XDomainRequest !== \"undefined\" && !this.xs && this.enablesXDR;\n  }\n\n  /**\n   * Aborts the request.\n   *\n   * @api public\n   */\n  abort() {\n    this.cleanup();\n  }\n}\n\n/**\n * Aborts pending requests when unloading the window. This is needed to prevent\n * memory leaks (e.g. when using IE) and to ensure that no spurious error is\n * emitted.\n */\n\nRequest.requestsCount = 0;\nRequest.requests = {};\n\nif (typeof document !== \"undefined\") {\n  if (typeof attachEvent === \"function\") {\n    attachEvent(\"onunload\", unloadHandler);\n  } else if (typeof addEventListener === \"function\") {\n    const terminationEvent = \"onpagehide\" in globalThis ? \"pagehide\" : \"unload\";\n    addEventListener(terminationEvent, unloadHandler, false);\n  }\n}\n\nfunction unloadHandler() {\n  for (let i in Request.requests) {\n    if (Request.requests.hasOwnProperty(i)) {\n      Request.requests[i].abort();\n    }\n  }\n}\n\nmodule.exports = XHR;\nmodule.exports.Request = Request;\n","const Transport = require(\"../transport\");\nconst parseqs = require(\"parseqs\");\nconst parser = require(\"engine.io-parser\");\nconst yeast = require(\"yeast\");\n\nconst debug = require(\"debug\")(\"engine.io-client:polling\");\n\nclass Polling extends Transport {\n  /**\n   * Transport name.\n   */\n  get name() {\n    return \"polling\";\n  }\n\n  /**\n   * Opens the socket (triggers polling). We write a PING message to determine\n   * when the transport is open.\n   *\n   * @api private\n   */\n  doOpen() {\n    this.poll();\n  }\n\n  /**\n   * Pauses polling.\n   *\n   * @param {Function} callback upon buffers are flushed and transport is paused\n   * @api private\n   */\n  pause(onPause) {\n    const self = this;\n\n    this.readyState = \"pausing\";\n\n    function pause() {\n      debug(\"paused\");\n      self.readyState = \"paused\";\n      onPause();\n    }\n\n    if (this.polling || !this.writable) {\n      let total = 0;\n\n      if (this.polling) {\n        debug(\"we are currently polling - waiting to pause\");\n        total++;\n        this.once(\"pollComplete\", function() {\n          debug(\"pre-pause polling complete\");\n          --total || pause();\n        });\n      }\n\n      if (!this.writable) {\n        debug(\"we are currently writing - waiting to pause\");\n        total++;\n        this.once(\"drain\", function() {\n          debug(\"pre-pause writing complete\");\n          --total || pause();\n        });\n      }\n    } else {\n      pause();\n    }\n  }\n\n  /**\n   * Starts polling cycle.\n   *\n   * @api public\n   */\n  poll() {\n    debug(\"polling\");\n    this.polling = true;\n    this.doPoll();\n    this.emit(\"poll\");\n  }\n\n  /**\n   * Overloads onData to detect payloads.\n   *\n   * @api private\n   */\n  onData(data) {\n    const self = this;\n    debug(\"polling got data %s\", data);\n    const callback = function(packet, index, total) {\n      // if its the first message we consider the transport open\n      if (\"opening\" === self.readyState && packet.type === \"open\") {\n        self.onOpen();\n      }\n\n      // if its a close packet, we close the ongoing requests\n      if (\"close\" === packet.type) {\n        self.onClose();\n        return false;\n      }\n\n      // otherwise bypass onData and handle the message\n      self.onPacket(packet);\n    };\n\n    // decode payload\n    parser.decodePayload(data, this.socket.binaryType).forEach(callback);\n\n    // if an event did not trigger closing\n    if (\"closed\" !== this.readyState) {\n      // if we got data we're not polling\n      this.polling = false;\n      this.emit(\"pollComplete\");\n\n      if (\"open\" === this.readyState) {\n        this.poll();\n      } else {\n        debug('ignoring poll - transport state \"%s\"', this.readyState);\n      }\n    }\n  }\n\n  /**\n   * For polling, send a close packet.\n   *\n   * @api private\n   */\n  doClose() {\n    const self = this;\n\n    function close() {\n      debug(\"writing close packet\");\n      self.write([{ type: \"close\" }]);\n    }\n\n    if (\"open\" === this.readyState) {\n      debug(\"transport open - closing\");\n      close();\n    } else {\n      // in case we're trying to close while\n      // handshaking is in progress (GH-164)\n      debug(\"transport not open - deferring close\");\n      this.once(\"open\", close);\n    }\n  }\n\n  /**\n   * Writes a packets payload.\n   *\n   * @param {Array} data packets\n   * @param {Function} drain callback\n   * @api private\n   */\n  write(packets) {\n    this.writable = false;\n\n    parser.encodePayload(packets, data => {\n      this.doWrite(data, () => {\n        this.writable = true;\n        this.emit(\"drain\");\n      });\n    });\n  }\n\n  /**\n   * Generates uri for connection.\n   *\n   * @api private\n   */\n  uri() {\n    let query = this.query || {};\n    const schema = this.opts.secure ? \"https\" : \"http\";\n    let port = \"\";\n\n    // cache busting is forced\n    if (false !== this.opts.timestampRequests) {\n      query[this.opts.timestampParam] = yeast();\n    }\n\n    if (!this.supportsBinary && !query.sid) {\n      query.b64 = 1;\n    }\n\n    query = parseqs.encode(query);\n\n    // avoid port if default for schema\n    if (\n      this.opts.port &&\n      ((\"https\" === schema && Number(this.opts.port) !== 443) ||\n        (\"http\" === schema && Number(this.opts.port) !== 80))\n    ) {\n      port = \":\" + this.opts.port;\n    }\n\n    // prepend ? to query\n    if (query.length) {\n      query = \"?\" + query;\n    }\n\n    const ipv6 = this.opts.hostname.indexOf(\":\") !== -1;\n    return (\n      schema +\n      \"://\" +\n      (ipv6 ? \"[\" + this.opts.hostname + \"]\" : this.opts.hostname) +\n      port +\n      this.opts.path +\n      query\n    );\n  }\n}\n\nmodule.exports = Polling;\n","const globalThis = require(\"../globalThis\");\n\nmodule.exports = {\n  WebSocket: globalThis.WebSocket || globalThis.MozWebSocket,\n  usingBrowserWebSocket: true,\n  defaultBinaryType: \"arraybuffer\"\n};\n","const Transport = require(\"../transport\");\nconst parser = require(\"engine.io-parser\");\nconst parseqs = require(\"parseqs\");\nconst yeast = require(\"yeast\");\nconst { pick } = require(\"../util\");\nconst {\n  WebSocket,\n  usingBrowserWebSocket,\n  defaultBinaryType\n} = require(\"./websocket-constructor\");\n\nconst debug = require(\"debug\")(\"engine.io-client:websocket\");\n\n// detect ReactNative environment\nconst isReactNative =\n  typeof navigator !== \"undefined\" &&\n  typeof navigator.product === \"string\" &&\n  navigator.product.toLowerCase() === \"reactnative\";\n\nclass WS extends Transport {\n  /**\n   * WebSocket transport constructor.\n   *\n   * @api {Object} connection options\n   * @api public\n   */\n  constructor(opts) {\n    super(opts);\n\n    this.supportsBinary = !opts.forceBase64;\n  }\n\n  /**\n   * Transport name.\n   *\n   * @api public\n   */\n  get name() {\n    return \"websocket\";\n  }\n\n  /**\n   * Opens socket.\n   *\n   * @api private\n   */\n  doOpen() {\n    if (!this.check()) {\n      // let probe timeout\n      return;\n    }\n\n    const uri = this.uri();\n    const protocols = this.opts.protocols;\n\n    // React Native only supports the 'headers' option, and will print a warning if anything else is passed\n    const opts = isReactNative\n      ? {}\n      : pick(\n          this.opts,\n          \"agent\",\n          \"perMessageDeflate\",\n          \"pfx\",\n          \"key\",\n          \"passphrase\",\n          \"cert\",\n          \"ca\",\n          \"ciphers\",\n          \"rejectUnauthorized\",\n          \"localAddress\",\n          \"protocolVersion\",\n          \"origin\",\n          \"maxPayload\",\n          \"family\",\n          \"checkServerIdentity\"\n        );\n\n    if (this.opts.extraHeaders) {\n      opts.headers = this.opts.extraHeaders;\n    }\n\n    try {\n      this.ws =\n        usingBrowserWebSocket && !isReactNative\n          ? protocols\n            ? new WebSocket(uri, protocols)\n            : new WebSocket(uri)\n          : new WebSocket(uri, protocols, opts);\n    } catch (err) {\n      return this.emit(\"error\", err);\n    }\n\n    this.ws.binaryType = this.socket.binaryType || defaultBinaryType;\n\n    this.addEventListeners();\n  }\n\n  /**\n   * Adds event listeners to the socket\n   *\n   * @api private\n   */\n  addEventListeners() {\n    const self = this;\n\n    this.ws.onopen = function() {\n      self.onOpen();\n    };\n    this.ws.onclose = function() {\n      self.onClose();\n    };\n    this.ws.onmessage = function(ev) {\n      self.onData(ev.data);\n    };\n    this.ws.onerror = function(e) {\n      self.onError(\"websocket error\", e);\n    };\n  }\n\n  /**\n   * Writes data to socket.\n   *\n   * @param {Array} array of packets.\n   * @api private\n   */\n  write(packets) {\n    const self = this;\n    this.writable = false;\n\n    // encodePacket efficient as it uses WS framing\n    // no need for encodePayload\n    let total = packets.length;\n    let i = 0;\n    const l = total;\n    for (; i < l; i++) {\n      (function(packet) {\n        parser.encodePacket(packet, self.supportsBinary, function(data) {\n          // always create a new object (GH-437)\n          const opts = {};\n          if (!usingBrowserWebSocket) {\n            if (packet.options) {\n              opts.compress = packet.options.compress;\n            }\n\n            if (self.opts.perMessageDeflate) {\n              const len =\n                \"string\" === typeof data\n                  ? Buffer.byteLength(data)\n                  : data.length;\n              if (len < self.opts.perMessageDeflate.threshold) {\n                opts.compress = false;\n              }\n            }\n          }\n\n          // Sometimes the websocket has already been closed but the browser didn't\n          // have a chance of informing us about it yet, in that case send will\n          // throw an error\n          try {\n            if (usingBrowserWebSocket) {\n              // TypeError is thrown when passing the second argument on Safari\n              self.ws.send(data);\n            } else {\n              self.ws.send(data, opts);\n            }\n          } catch (e) {\n            debug(\"websocket closed before onclose event\");\n          }\n\n          --total || done();\n        });\n      })(packets[i]);\n    }\n\n    function done() {\n      self.emit(\"flush\");\n\n      // fake drain\n      // defer to next tick to allow Socket to clear writeBuffer\n      setTimeout(function() {\n        self.writable = true;\n        self.emit(\"drain\");\n      }, 0);\n    }\n  }\n\n  /**\n   * Called upon close\n   *\n   * @api private\n   */\n  onClose() {\n    Transport.prototype.onClose.call(this);\n  }\n\n  /**\n   * Closes socket.\n   *\n   * @api private\n   */\n  doClose() {\n    if (typeof this.ws !== \"undefined\") {\n      this.ws.close();\n      this.ws = null;\n    }\n  }\n\n  /**\n   * Generates uri for connection.\n   *\n   * @api private\n   */\n  uri() {\n    let query = this.query || {};\n    const schema = this.opts.secure ? \"wss\" : \"ws\";\n    let port = \"\";\n\n    // avoid port if default for schema\n    if (\n      this.opts.port &&\n      ((\"wss\" === schema && Number(this.opts.port) !== 443) ||\n        (\"ws\" === schema && Number(this.opts.port) !== 80))\n    ) {\n      port = \":\" + this.opts.port;\n    }\n\n    // append timestamp to URI\n    if (this.opts.timestampRequests) {\n      query[this.opts.timestampParam] = yeast();\n    }\n\n    // communicate binary support capabilities\n    if (!this.supportsBinary) {\n      query.b64 = 1;\n    }\n\n    query = parseqs.encode(query);\n\n    // prepend ? to query\n    if (query.length) {\n      query = \"?\" + query;\n    }\n\n    const ipv6 = this.opts.hostname.indexOf(\":\") !== -1;\n    return (\n      schema +\n      \"://\" +\n      (ipv6 ? \"[\" + this.opts.hostname + \"]\" : this.opts.hostname) +\n      port +\n      this.opts.path +\n      query\n    );\n  }\n\n  /**\n   * Feature detection for WebSocket.\n   *\n   * @return {Boolean} whether this transport is available.\n   * @api public\n   */\n  check() {\n    return (\n      !!WebSocket &&\n      !(\"__initialize\" in WebSocket && this.name === WS.prototype.name)\n    );\n  }\n}\n\nmodule.exports = WS;\n","module.exports.pick = (obj, ...attr) => {\n  return attr.reduce((acc, k) => {\n    if (obj.hasOwnProperty(k)) {\n      acc[k] = obj[k];\n    }\n    return acc;\n  }, {});\n};\n","// browser shim for xmlhttprequest module\n\nconst hasCORS = require(\"has-cors\");\nconst globalThis = require(\"./globalThis\");\n\nmodule.exports = function(opts) {\n  const xdomain = opts.xdomain;\n\n  // scheme must be same when usign XDomainRequest\n  // http://blogs.msdn.com/b/ieinternals/archive/2010/05/13/xdomainrequest-restrictions-limitations-and-workarounds.aspx\n  const xscheme = opts.xscheme;\n\n  // XDomainRequest has a flow of not sending cookie, therefore it should be disabled as a default.\n  // https://github.com/Automattic/engine.io-client/pull/217\n  const enablesXDR = opts.enablesXDR;\n\n  // XMLHttpRequest can be disabled on IE\n  try {\n    if (\"undefined\" !== typeof XMLHttpRequest && (!xdomain || hasCORS)) {\n      return new XMLHttpRequest();\n    }\n  } catch (e) {}\n\n  // Use XDomainRequest for IE8 if enablesXDR is true\n  // because loading bar keeps flashing when using jsonp-polling\n  // https://github.com/yujiosaka/socke.io-ie8-loading-example\n  try {\n    if (\"undefined\" !== typeof XDomainRequest && !xscheme && enablesXDR) {\n      return new XDomainRequest();\n    }\n  } catch (e) {}\n\n  if (!xdomain) {\n    try {\n      return new globalThis[[\"Active\"].concat(\"Object\").join(\"X\")](\n        \"Microsoft.XMLHTTP\"\n      );\n    } catch (e) {}\n  }\n};\n","const PACKET_TYPES = Object.create(null); // no Map = no polyfill\nPACKET_TYPES[\"open\"] = \"0\";\nPACKET_TYPES[\"close\"] = \"1\";\nPACKET_TYPES[\"ping\"] = \"2\";\nPACKET_TYPES[\"pong\"] = \"3\";\nPACKET_TYPES[\"message\"] = \"4\";\nPACKET_TYPES[\"upgrade\"] = \"5\";\nPACKET_TYPES[\"noop\"] = \"6\";\n\nconst PACKET_TYPES_REVERSE = Object.create(null);\nObject.keys(PACKET_TYPES).forEach(key => {\n  PACKET_TYPES_REVERSE[PACKET_TYPES[key]] = key;\n});\n\nconst ERROR_PACKET = { type: \"error\", data: \"parser error\" };\n\nmodule.exports = {\n  PACKET_TYPES,\n  PACKET_TYPES_REVERSE,\n  ERROR_PACKET\n};\n","const { PACKET_TYPES_REVERSE, ERROR_PACKET } = require(\"./commons\");\n\nconst withNativeArrayBuffer = typeof ArrayBuffer === \"function\";\n\nlet base64decoder;\nif (withNativeArrayBuffer) {\n  base64decoder = require(\"base64-arraybuffer\");\n}\n\nconst decodePacket = (encodedPacket, binaryType) => {\n  if (typeof encodedPacket !== \"string\") {\n    return {\n      type: \"message\",\n      data: mapBinary(encodedPacket, binaryType)\n    };\n  }\n  const type = encodedPacket.charAt(0);\n  if (type === \"b\") {\n    return {\n      type: \"message\",\n      data: decodeBase64Packet(encodedPacket.substring(1), binaryType)\n    };\n  }\n  const packetType = PACKET_TYPES_REVERSE[type];\n  if (!packetType) {\n    return ERROR_PACKET;\n  }\n  return encodedPacket.length > 1\n    ? {\n        type: PACKET_TYPES_REVERSE[type],\n        data: encodedPacket.substring(1)\n      }\n    : {\n        type: PACKET_TYPES_REVERSE[type]\n      };\n};\n\nconst decodeBase64Packet = (data, binaryType) => {\n  if (base64decoder) {\n    const decoded = base64decoder.decode(data);\n    return mapBinary(decoded, binaryType);\n  } else {\n    return { base64: true, data }; // fallback for old browsers\n  }\n};\n\nconst mapBinary = (data, binaryType) => {\n  switch (binaryType) {\n    case \"blob\":\n      return data instanceof ArrayBuffer ? new Blob([data]) : data;\n    case \"arraybuffer\":\n    default:\n      return data; // assuming the data is already an ArrayBuffer\n  }\n};\n\nmodule.exports = decodePacket;\n","const { PACKET_TYPES } = require(\"./commons\");\n\nconst withNativeBlob =\n  typeof Blob === \"function\" ||\n  (typeof Blob !== \"undefined\" &&\n    Object.prototype.toString.call(Blob) === \"[object BlobConstructor]\");\nconst withNativeArrayBuffer = typeof ArrayBuffer === \"function\";\n\n// ArrayBuffer.isView method is not defined in IE10\nconst isView = obj => {\n  return typeof ArrayBuffer.isView === \"function\"\n    ? ArrayBuffer.isView(obj)\n    : obj && obj.buffer instanceof ArrayBuffer;\n};\n\nconst encodePacket = ({ type, data }, supportsBinary, callback) => {\n  if (withNativeBlob && data instanceof Blob) {\n    if (supportsBinary) {\n      return callback(data);\n    } else {\n      return encodeBlobAsBase64(data, callback);\n    }\n  } else if (\n    withNativeArrayBuffer &&\n    (data instanceof ArrayBuffer || isView(data))\n  ) {\n    if (supportsBinary) {\n      return callback(data instanceof ArrayBuffer ? data : data.buffer);\n    } else {\n      return encodeBlobAsBase64(new Blob([data]), callback);\n    }\n  }\n  // plain string\n  return callback(PACKET_TYPES[type] + (data || \"\"));\n};\n\nconst encodeBlobAsBase64 = (data, callback) => {\n  const fileReader = new FileReader();\n  fileReader.onload = function() {\n    const content = fileReader.result.split(\",\")[1];\n    callback(\"b\" + content);\n  };\n  return fileReader.readAsDataURL(data);\n};\n\nmodule.exports = encodePacket;\n","const encodePacket = require(\"./encodePacket\");\nconst decodePacket = require(\"./decodePacket\");\n\nconst SEPARATOR = String.fromCharCode(30); // see https://en.wikipedia.org/wiki/Delimiter#ASCII_delimited_text\n\nconst encodePayload = (packets, callback) => {\n  // some packets may be added to the array while encoding, so the initial length must be saved\n  const length = packets.length;\n  const encodedPackets = new Array(length);\n  let count = 0;\n\n  packets.forEach((packet, i) => {\n    // force base64 encoding for binary packets\n    encodePacket(packet, false, encodedPacket => {\n      encodedPackets[i] = encodedPacket;\n      if (++count === length) {\n        callback(encodedPackets.join(SEPARATOR));\n      }\n    });\n  });\n};\n\nconst decodePayload = (encodedPayload, binaryType) => {\n  const encodedPackets = encodedPayload.split(SEPARATOR);\n  const packets = [];\n  for (let i = 0; i < encodedPackets.length; i++) {\n    const decodedPacket = decodePacket(encodedPackets[i], binaryType);\n    packets.push(decodedPacket);\n    if (decodedPacket.type === \"error\") {\n      break;\n    }\n  }\n  return packets;\n};\n\nmodule.exports = {\n  protocol: 4,\n  encodePacket,\n  encodePayload,\n  decodePacket,\n  decodePayload\n};\n","/*\n * base64-arraybuffer\n * https://github.com/niklasvh/base64-arraybuffer\n *\n * Copyright (c) 2012 Niklas von Hertzen\n * Licensed under the MIT license.\n */\n(function(chars){\n  \"use strict\";\n\n  exports.encode = function(arraybuffer) {\n    var bytes = new Uint8Array(arraybuffer),\n    i, len = bytes.length, base64 = \"\";\n\n    for (i = 0; i < len; i+=3) {\n      base64 += chars[bytes[i] >> 2];\n      base64 += chars[((bytes[i] & 3) << 4) | (bytes[i + 1] >> 4)];\n      base64 += chars[((bytes[i + 1] & 15) << 2) | (bytes[i + 2] >> 6)];\n      base64 += chars[bytes[i + 2] & 63];\n    }\n\n    if ((len % 3) === 2) {\n      base64 = base64.substring(0, base64.length - 1) + \"=\";\n    } else if (len % 3 === 1) {\n      base64 = base64.substring(0, base64.length - 2) + \"==\";\n    }\n\n    return base64;\n  };\n\n  exports.decode =  function(base64) {\n    var bufferLength = base64.length * 0.75,\n    len = base64.length, i, p = 0,\n    encoded1, encoded2, encoded3, encoded4;\n\n    if (base64[base64.length - 1] === \"=\") {\n      bufferLength--;\n      if (base64[base64.length - 2] === \"=\") {\n        bufferLength--;\n      }\n    }\n\n    var arraybuffer = new ArrayBuffer(bufferLength),\n    bytes = new Uint8Array(arraybuffer);\n\n    for (i = 0; i < len; i+=4) {\n      encoded1 = chars.indexOf(base64[i]);\n      encoded2 = chars.indexOf(base64[i+1]);\n      encoded3 = chars.indexOf(base64[i+2]);\n      encoded4 = chars.indexOf(base64[i+3]);\n\n      bytes[p++] = (encoded1 << 2) | (encoded2 >> 4);\n      bytes[p++] = ((encoded2 & 15) << 4) | (encoded3 >> 2);\n      bytes[p++] = ((encoded3 & 3) << 6) | (encoded4 & 63);\n    }\n\n    return arraybuffer;\n  };\n})(\"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/\");\n","\n/**\n * Module exports.\n *\n * Logic borrowed from Modernizr:\n *\n *   - https://github.com/Modernizr/Modernizr/blob/master/feature-detects/cors.js\n */\n\ntry {\n  module.exports = typeof XMLHttpRequest !== 'undefined' &&\n    'withCredentials' in new XMLHttpRequest();\n} catch (err) {\n  // if XMLHttp support is disabled in IE then it will throw\n  // when trying to create\n  module.exports = false;\n}\n","/**\n * Helpers.\n */\n\nvar s = 1000;\nvar m = s * 60;\nvar h = m * 60;\nvar d = h * 24;\nvar w = d * 7;\nvar y = d * 365.25;\n\n/**\n * Parse or format the given `val`.\n *\n * Options:\n *\n *  - `long` verbose formatting [false]\n *\n * @param {String|Number} val\n * @param {Object} [options]\n * @throws {Error} throw an error if val is not a non-empty string or a number\n * @return {String|Number}\n * @api public\n */\n\nmodule.exports = function(val, options) {\n  options = options || {};\n  var type = typeof val;\n  if (type === 'string' && val.length > 0) {\n    return parse(val);\n  } else if (type === 'number' && isFinite(val)) {\n    return options.long ? fmtLong(val) : fmtShort(val);\n  }\n  throw new Error(\n    'val is not a non-empty string or a valid number. val=' +\n      JSON.stringify(val)\n  );\n};\n\n/**\n * Parse the given `str` and return milliseconds.\n *\n * @param {String} str\n * @return {Number}\n * @api private\n */\n\nfunction parse(str) {\n  str = String(str);\n  if (str.length > 100) {\n    return;\n  }\n  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(\n    str\n  );\n  if (!match) {\n    return;\n  }\n  var n = parseFloat(match[1]);\n  var type = (match[2] || 'ms').toLowerCase();\n  switch (type) {\n    case 'years':\n    case 'year':\n    case 'yrs':\n    case 'yr':\n    case 'y':\n      return n * y;\n    case 'weeks':\n    case 'week':\n    case 'w':\n      return n * w;\n    case 'days':\n    case 'day':\n    case 'd':\n      return n * d;\n    case 'hours':\n    case 'hour':\n    case 'hrs':\n    case 'hr':\n    case 'h':\n      return n * h;\n    case 'minutes':\n    case 'minute':\n    case 'mins':\n    case 'min':\n    case 'm':\n      return n * m;\n    case 'seconds':\n    case 'second':\n    case 'secs':\n    case 'sec':\n    case 's':\n      return n * s;\n    case 'milliseconds':\n    case 'millisecond':\n    case 'msecs':\n    case 'msec':\n    case 'ms':\n      return n;\n    default:\n      return undefined;\n  }\n}\n\n/**\n * Short format for `ms`.\n *\n * @param {Number} ms\n * @return {String}\n * @api private\n */\n\nfunction fmtShort(ms) {\n  var msAbs = Math.abs(ms);\n  if (msAbs >= d) {\n    return Math.round(ms / d) + 'd';\n  }\n  if (msAbs >= h) {\n    return Math.round(ms / h) + 'h';\n  }\n  if (msAbs >= m) {\n    return Math.round(ms / m) + 'm';\n  }\n  if (msAbs >= s) {\n    return Math.round(ms / s) + 's';\n  }\n  return ms + 'ms';\n}\n\n/**\n * Long format for `ms`.\n *\n * @param {Number} ms\n * @return {String}\n * @api private\n */\n\nfunction fmtLong(ms) {\n  var msAbs = Math.abs(ms);\n  if (msAbs >= d) {\n    return plural(ms, msAbs, d, 'day');\n  }\n  if (msAbs >= h) {\n    return plural(ms, msAbs, h, 'hour');\n  }\n  if (msAbs >= m) {\n    return plural(ms, msAbs, m, 'minute');\n  }\n  if (msAbs >= s) {\n    return plural(ms, msAbs, s, 'second');\n  }\n  return ms + ' ms';\n}\n\n/**\n * Pluralization helper.\n */\n\nfunction plural(ms, msAbs, n, name) {\n  var isPlural = msAbs >= n * 1.5;\n  return Math.round(ms / n) + ' ' + name + (isPlural ? 's' : '');\n}\n","/**\n * Compiles a querystring\n * Returns string representation of the object\n *\n * @param {Object}\n * @api private\n */\n\nexports.encode = function (obj) {\n  var str = '';\n\n  for (var i in obj) {\n    if (obj.hasOwnProperty(i)) {\n      if (str.length) str += '&';\n      str += encodeURIComponent(i) + '=' + encodeURIComponent(obj[i]);\n    }\n  }\n\n  return str;\n};\n\n/**\n * Parses a simple querystring into an object\n *\n * @param {String} qs\n * @api private\n */\n\nexports.decode = function(qs){\n  var qry = {};\n  var pairs = qs.split('&');\n  for (var i = 0, l = pairs.length; i < l; i++) {\n    var pair = pairs[i].split('=');\n    qry[decodeURIComponent(pair[0])] = decodeURIComponent(pair[1]);\n  }\n  return qry;\n};\n","/**\n * Parses an URI\n *\n * @author Steven Levithan <stevenlevithan.com> (MIT license)\n * @api private\n */\n\nvar re = /^(?:(?![^:@]+:[^:@\\/]*@)(http|https|ws|wss):\\/\\/)?((?:(([^:@]*)(?::([^:@]*))?)?@)?((?:[a-f0-9]{0,4}:){2,7}[a-f0-9]{0,4}|[^:\\/?#]*)(?::(\\d*))?)(((\\/(?:[^?#](?![^?#\\/]*\\.[^?#\\/.]+(?:[?#]|$)))*\\/?)?([^?#\\/]*))(?:\\?([^#]*))?(?:#(.*))?)/;\n\nvar parts = [\n    'source', 'protocol', 'authority', 'userInfo', 'user', 'password', 'host', 'port', 'relative', 'path', 'directory', 'file', 'query', 'anchor'\n];\n\nmodule.exports = function parseuri(str) {\n    var src = str,\n        b = str.indexOf('['),\n        e = str.indexOf(']');\n\n    if (b != -1 && e != -1) {\n        str = str.substring(0, b) + str.substring(b, e).replace(/:/g, ';') + str.substring(e, str.length);\n    }\n\n    var m = re.exec(str || ''),\n        uri = {},\n        i = 14;\n\n    while (i--) {\n        uri[parts[i]] = m[i] || '';\n    }\n\n    if (b != -1 && e != -1) {\n        uri.source = src;\n        uri.host = uri.host.substring(1, uri.host.length - 1).replace(/;/g, ':');\n        uri.authority = uri.authority.replace('[', '').replace(']', '').replace(/;/g, ':');\n        uri.ipv6uri = true;\n    }\n\n    uri.pathNames = pathNames(uri, uri['path']);\n    uri.queryKey = queryKey(uri, uri['query']);\n\n    return uri;\n};\n\nfunction pathNames(obj, path) {\n    var regx = /\\/{2,9}/g,\n        names = path.replace(regx, \"/\").split(\"/\");\n\n    if (path.substr(0, 1) == '/' || path.length === 0) {\n        names.splice(0, 1);\n    }\n    if (path.substr(path.length - 1, 1) == '/') {\n        names.splice(names.length - 1, 1);\n    }\n\n    return names;\n}\n\nfunction queryKey(uri, query) {\n    var data = {};\n\n    query.replace(/(?:^|&)([^&=]*)=?([^&]*)/g, function ($0, $1, $2) {\n        if ($1) {\n            data[$1] = $2;\n        }\n    });\n\n    return data;\n}\n","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.reconstructPacket = exports.deconstructPacket = void 0;\nconst is_binary_1 = require(\"./is-binary\");\n/**\n * Replaces every Buffer | ArrayBuffer | Blob | File in packet with a numbered placeholder.\n *\n * @param {Object} packet - socket.io event packet\n * @return {Object} with deconstructed packet and list of buffers\n * @public\n */\nfunction deconstructPacket(packet) {\n    const buffers = [];\n    const packetData = packet.data;\n    const pack = packet;\n    pack.data = _deconstructPacket(packetData, buffers);\n    pack.attachments = buffers.length; // number of binary 'attachments'\n    return { packet: pack, buffers: buffers };\n}\nexports.deconstructPacket = deconstructPacket;\nfunction _deconstructPacket(data, buffers) {\n    if (!data)\n        return data;\n    if (is_binary_1.isBinary(data)) {\n        const placeholder = { _placeholder: true, num: buffers.length };\n        buffers.push(data);\n        return placeholder;\n    }\n    else if (Array.isArray(data)) {\n        const newData = new Array(data.length);\n        for (let i = 0; i < data.length; i++) {\n            newData[i] = _deconstructPacket(data[i], buffers);\n        }\n        return newData;\n    }\n    else if (typeof data === \"object\" && !(data instanceof Date)) {\n        const newData = {};\n        for (const key in data) {\n            if (data.hasOwnProperty(key)) {\n                newData[key] = _deconstructPacket(data[key], buffers);\n            }\n        }\n        return newData;\n    }\n    return data;\n}\n/**\n * Reconstructs a binary packet from its placeholder packet and buffers\n *\n * @param {Object} packet - event packet with placeholders\n * @param {Array} buffers - binary buffers to put in placeholder positions\n * @return {Object} reconstructed packet\n * @public\n */\nfunction reconstructPacket(packet, buffers) {\n    packet.data = _reconstructPacket(packet.data, buffers);\n    packet.attachments = undefined; // no longer useful\n    return packet;\n}\nexports.reconstructPacket = reconstructPacket;\nfunction _reconstructPacket(data, buffers) {\n    if (!data)\n        return data;\n    if (data && data._placeholder) {\n        return buffers[data.num]; // appropriate buffer (should be natural order anyway)\n    }\n    else if (Array.isArray(data)) {\n        for (let i = 0; i < data.length; i++) {\n            data[i] = _reconstructPacket(data[i], buffers);\n        }\n    }\n    else if (typeof data === \"object\") {\n        for (const key in data) {\n            if (data.hasOwnProperty(key)) {\n                data[key] = _reconstructPacket(data[key], buffers);\n            }\n        }\n    }\n    return data;\n}\n","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.Decoder = exports.Encoder = exports.PacketType = exports.protocol = void 0;\nconst Emitter = require(\"component-emitter\");\nconst binary_1 = require(\"./binary\");\nconst is_binary_1 = require(\"./is-binary\");\nconst debug = require(\"debug\")(\"socket.io-parser\");\n/**\n * Protocol version.\n *\n * @public\n */\nexports.protocol = 5;\nvar PacketType;\n(function (PacketType) {\n    PacketType[PacketType[\"CONNECT\"] = 0] = \"CONNECT\";\n    PacketType[PacketType[\"DISCONNECT\"] = 1] = \"DISCONNECT\";\n    PacketType[PacketType[\"EVENT\"] = 2] = \"EVENT\";\n    PacketType[PacketType[\"ACK\"] = 3] = \"ACK\";\n    PacketType[PacketType[\"CONNECT_ERROR\"] = 4] = \"CONNECT_ERROR\";\n    PacketType[PacketType[\"BINARY_EVENT\"] = 5] = \"BINARY_EVENT\";\n    PacketType[PacketType[\"BINARY_ACK\"] = 6] = \"BINARY_ACK\";\n})(PacketType = exports.PacketType || (exports.PacketType = {}));\n/**\n * A socket.io Encoder instance\n */\nclass Encoder {\n    /**\n     * Encode a packet as a single string if non-binary, or as a\n     * buffer sequence, depending on packet type.\n     *\n     * @param {Object} obj - packet object\n     */\n    encode(obj) {\n        debug(\"encoding packet %j\", obj);\n        if (obj.type === PacketType.EVENT || obj.type === PacketType.ACK) {\n            if (is_binary_1.hasBinary(obj)) {\n                obj.type =\n                    obj.type === PacketType.EVENT\n                        ? PacketType.BINARY_EVENT\n                        : PacketType.BINARY_ACK;\n                return this.encodeAsBinary(obj);\n            }\n        }\n        return [this.encodeAsString(obj)];\n    }\n    /**\n     * Encode packet as string.\n     */\n    encodeAsString(obj) {\n        // first is type\n        let str = \"\" + obj.type;\n        // attachments if we have them\n        if (obj.type === PacketType.BINARY_EVENT ||\n            obj.type === PacketType.BINARY_ACK) {\n            str += obj.attachments + \"-\";\n        }\n        // if we have a namespace other than `/`\n        // we append it followed by a comma `,`\n        if (obj.nsp && \"/\" !== obj.nsp) {\n            str += obj.nsp + \",\";\n        }\n        // immediately followed by the id\n        if (null != obj.id) {\n            str += obj.id;\n        }\n        // json data\n        if (null != obj.data) {\n            str += JSON.stringify(obj.data);\n        }\n        debug(\"encoded %j as %s\", obj, str);\n        return str;\n    }\n    /**\n     * Encode packet as 'buffer sequence' by removing blobs, and\n     * deconstructing packet into object with placeholders and\n     * a list of buffers.\n     */\n    encodeAsBinary(obj) {\n        const deconstruction = binary_1.deconstructPacket(obj);\n        const pack = this.encodeAsString(deconstruction.packet);\n        const buffers = deconstruction.buffers;\n        buffers.unshift(pack); // add packet info to beginning of data list\n        return buffers; // write all the buffers\n    }\n}\nexports.Encoder = Encoder;\n/**\n * A socket.io Decoder instance\n *\n * @return {Object} decoder\n */\nclass Decoder extends Emitter {\n    constructor() {\n        super();\n    }\n    /**\n     * Decodes an encoded packet string into packet JSON.\n     *\n     * @param {String} obj - encoded packet\n     */\n    add(obj) {\n        let packet;\n        if (typeof obj === \"string\") {\n            packet = this.decodeString(obj);\n            if (packet.type === PacketType.BINARY_EVENT ||\n                packet.type === PacketType.BINARY_ACK) {\n                // binary packet's json\n                this.reconstructor = new BinaryReconstructor(packet);\n                // no attachments, labeled binary but no binary data to follow\n                if (packet.attachments === 0) {\n                    super.emit(\"decoded\", packet);\n                }\n            }\n            else {\n                // non-binary full packet\n                super.emit(\"decoded\", packet);\n            }\n        }\n        else if (is_binary_1.isBinary(obj) || obj.base64) {\n            // raw binary data\n            if (!this.reconstructor) {\n                throw new Error(\"got binary data when not reconstructing a packet\");\n            }\n            else {\n                packet = this.reconstructor.takeBinaryData(obj);\n                if (packet) {\n                    // received final buffer\n                    this.reconstructor = null;\n                    super.emit(\"decoded\", packet);\n                }\n            }\n        }\n        else {\n            throw new Error(\"Unknown type: \" + obj);\n        }\n    }\n    /**\n     * Decode a packet String (JSON data)\n     *\n     * @param {String} str\n     * @return {Object} packet\n     */\n    decodeString(str) {\n        let i = 0;\n        // look up type\n        const p = {\n            type: Number(str.charAt(0)),\n        };\n        if (PacketType[p.type] === undefined) {\n            throw new Error(\"unknown packet type \" + p.type);\n        }\n        // look up attachments if type binary\n        if (p.type === PacketType.BINARY_EVENT ||\n            p.type === PacketType.BINARY_ACK) {\n            const start = i + 1;\n            while (str.charAt(++i) !== \"-\" && i != str.length) { }\n            const buf = str.substring(start, i);\n            if (buf != Number(buf) || str.charAt(i) !== \"-\") {\n                throw new Error(\"Illegal attachments\");\n            }\n            p.attachments = Number(buf);\n        }\n        // look up namespace (if any)\n        if (\"/\" === str.charAt(i + 1)) {\n            const start = i + 1;\n            while (++i) {\n                const c = str.charAt(i);\n                if (\",\" === c)\n                    break;\n                if (i === str.length)\n                    break;\n            }\n            p.nsp = str.substring(start, i);\n        }\n        else {\n            p.nsp = \"/\";\n        }\n        // look up id\n        const next = str.charAt(i + 1);\n        if (\"\" !== next && Number(next) == next) {\n            const start = i + 1;\n            while (++i) {\n                const c = str.charAt(i);\n                if (null == c || Number(c) != c) {\n                    --i;\n                    break;\n                }\n                if (i === str.length)\n                    break;\n            }\n            p.id = Number(str.substring(start, i + 1));\n        }\n        // look up json data\n        if (str.charAt(++i)) {\n            const payload = tryParse(str.substr(i));\n            if (Decoder.isPayloadValid(p.type, payload)) {\n                p.data = payload;\n            }\n            else {\n                throw new Error(\"invalid payload\");\n            }\n        }\n        debug(\"decoded %s as %j\", str, p);\n        return p;\n    }\n    static isPayloadValid(type, payload) {\n        switch (type) {\n            case PacketType.CONNECT:\n                return typeof payload === \"object\";\n            case PacketType.DISCONNECT:\n                return payload === undefined;\n            case PacketType.CONNECT_ERROR:\n                return typeof payload === \"string\" || typeof payload === \"object\";\n            case PacketType.EVENT:\n            case PacketType.BINARY_EVENT:\n                return Array.isArray(payload) && payload.length > 0;\n            case PacketType.ACK:\n            case PacketType.BINARY_ACK:\n                return Array.isArray(payload);\n        }\n    }\n    /**\n     * Deallocates a parser's resources\n     */\n    destroy() {\n        if (this.reconstructor) {\n            this.reconstructor.finishedReconstruction();\n        }\n    }\n}\nexports.Decoder = Decoder;\nfunction tryParse(str) {\n    try {\n        return JSON.parse(str);\n    }\n    catch (e) {\n        return false;\n    }\n}\n/**\n * A manager of a binary event's 'buffer sequence'. 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ArrayBuffer.isView(obj)\n        : obj.buffer instanceof ArrayBuffer;\n};\nconst toString = Object.prototype.toString;\nconst withNativeBlob = typeof Blob === \"function\" ||\n    (typeof Blob !== \"undefined\" &&\n        toString.call(Blob) === \"[object BlobConstructor]\");\nconst withNativeFile = typeof File === \"function\" ||\n    (typeof File !== \"undefined\" &&\n        toString.call(File) === \"[object FileConstructor]\");\n/**\n * Returns true if obj is a Buffer, an ArrayBuffer, a Blob or a File.\n *\n * @private\n */\nfunction isBinary(obj) {\n    return ((withNativeArrayBuffer && (obj instanceof ArrayBuffer || isView(obj))) ||\n        (withNativeBlob && obj instanceof Blob) ||\n        (withNativeFile && obj instanceof File));\n}\nexports.isBinary = isBinary;\nfunction hasBinary(obj, toJSON) {\n    if (!obj || typeof obj !== \"object\") {\n        return false;\n    }\n    if (Array.isArray(obj)) {\n        for (let i = 0, l = obj.length; i < l; i++) {\n            if (hasBinary(obj[i])) {\n                return true;\n            }\n        }\n        return false;\n    }\n    if (isBinary(obj)) {\n        return true;\n    }\n    if (obj.toJSON &&\n        typeof obj.toJSON === \"function\" &&\n        arguments.length === 1) {\n        return hasBinary(obj.toJSON(), true);\n    }\n    for (const key in obj) {\n        if (Object.prototype.hasOwnProperty.call(obj, key) && hasBinary(obj[key])) {\n            return true;\n        }\n    }\n    return false;\n}\nexports.hasBinary = hasBinary;\n","'use strict';\n\nvar alphabet = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-_'.split('')\n  , length = 64\n  , map = {}\n  , seed = 0\n  , i = 0\n  , prev;\n\n/**\n * Return a string representing the specified number.\n *\n * @param {Number} num The number to convert.\n * @returns {String} The string representation of the number.\n * @api public\n */\nfunction encode(num) {\n  var encoded = '';\n\n  do {\n    encoded = alphabet[num % length] + encoded;\n    num = Math.floor(num / length);\n  } while (num > 0);\n\n  return encoded;\n}\n\n/**\n * Return the integer value specified by the given string.\n *\n * @param {String} str The string to convert.\n * @returns {Number} The integer value represented by the string.\n * @api public\n */\nfunction decode(str) {\n  var decoded = 0;\n\n  for (i = 0; i < str.length; i++) {\n    decoded = decoded * length + map[str.charAt(i)];\n  }\n\n  return decoded;\n}\n\n/**\n * Yeast: A tiny growing id generator.\n *\n * @returns {String} A unique id.\n * @api public\n */\nfunction yeast() {\n  var now = encode(+new Date());\n\n  if (now !== prev) return seed = 0, prev = now;\n  return now +'.'+ encode(seed++);\n}\n\n//\n// Map each character to its index.\n//\nfor (; i < length; i++) map[alphabet[i]] = i;\n\n//\n// Expose the `yeast`, `encode` and `decode` functions.\n//\nyeast.encode = encode;\nyeast.decode = decode;\nmodule.exports = yeast;\n"],"sourceRoot":""}
Index: trip-planner-front/node_modules/socket.io/client-dist/socket.io.min.js
===================================================================
--- trip-planner-front/node_modules/socket.io/client-dist/socket.io.min.js	(revision 571e0df9a7a5e798c9941a85842f785177bedbbd)
+++ trip-planner-front/node_modules/socket.io/client-dist/socket.io.min.js	(revision 6a3a178323fd905112b5392bd9d3cb83b66ef2d3)
@@ -1,7 +1,7 @@
 /*!
- * Socket.IO v4.4.0
+ * Socket.IO v3.1.2
  * (c) 2014-2021 Guillermo Rauch
  * Released under the MIT License.
  */
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t=this.query||{},e=this.opts.secure?"wss":"ws",n="";this.opts.port&&("wss"===e&&443!==Number(this.opts.port)||"ws"===e&&80!==Number(this.opts.port))&&(n=":"+this.opts.port),this.opts.timestampRequests&&(t[this.opts.timestampParam]=X()),this.supportsBinary||(t.b64=1);var r=G.encode(t);return e+"://"+(-1!==this.opts.hostname.indexOf(":")?"["+this.opts.hostname+"]":this.opts.hostname)+n+this.opts.path+(r.length?"?"+r:"")}},{key:"check",value:function(){return!(!it||"__initialize"in it&&this.name===o.prototype.name)}}]),o}(H),ct={websocket:at,polling:et},ut=function(n){i(a,n);var s=h(a);function a(n){var r,i=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};return e(this,a),r=s.call(this),n&&"object"===t(n)&&(i=n,n=null),n?(n=v(n),i.hostname=n.host,i.secure="https"===n.protocol||"wss"===n.protocol,i.port=n.port,n.query&&(i.query=n.query)):i.host&&(i.hostname=v(i.host).host),A(c(r),i),r.secure=null!=i.secure?i.secure:"undefined"!=typeof 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addEventListener&&(r.opts.closeOnBeforeunload&&addEventListener("beforeunload",(function(){r.transport&&(r.transport.removeAllListeners(),r.transport.close())}),!1),"localhost"!==r.hostname&&(r.offlineEventListener=function(){r.onClose("transport close")},addEventListener("offline",r.offlineEventListener,!1))),r.open(),r}return r(a,[{key:"createTransport",value:function(t){var e=function(t){var e={};for(var n in t)t.hasOwnProperty(n)&&(e[n]=t[n]);return e}(this.opts.query);e.EIO=4,e.transport=t,this.id&&(e.sid=this.id);var n=o({},this.opts.transportOptions[t],this.opts,{query:e,socket:this,hostname:this.hostname,secure:this.secure,port:this.port});return new ct[t](n)}},{key:"open",value:function(){var t,e=this;if(this.opts.rememberUpgrade&&a.priorWebsocketSuccess&&-1!==this.transports.indexOf("websocket"))t="websocket";else{if(0===this.transports.length)return void this.setTimeoutFn((function(){e.emitReserved("error","No transports 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Error("probe error");o.transport=n.name,e.emitReserved("upgradeError",o)}})))};function i(){r||(r=!0,f(),n.close(),n=null)}var s=function(t){var r=new Error("probe error: "+t);r.transport=n.name,i(),e.emitReserved("upgradeError",r)};function c(){s("transport closed")}function u(){s("socket closed")}function h(t){n&&t.name!==n.name&&i()}var f=function(){n.removeListener("open",o),n.removeListener("error",s),n.removeListener("close",c),e.off("close",u),e.off("upgrading",h)};n.once("open",o),n.once("error",s),n.once("close",c),this.once("close",u),this.once("upgrading",h),n.open()}},{key:"onOpen",value:function(){if(this.readyState="open",a.priorWebsocketSuccess="websocket"===this.transport.name,this.emitReserved("open"),this.flush(),"open"===this.readyState&&this.opts.upgrade&&this.transport.pause)for(var t=0,e=this.upgrades.length;t<e;t++)this.probe(this.upgrades[t])}},{key:"onPacket",value:function(t){if("opening"===this.readyState||"open"===this.readyState||"closing"===this.readyState)switch(this.emitReserved("packet",t),this.emitReserved("heartbeat"),t.type){case"open":this.onHandshake(JSON.parse(t.data));break;case"ping":this.resetPingTimeout(),this.sendPacket("pong"),this.emitReserved("ping"),this.emitReserved("pong");break;case"error":var e=new Error("server error");e.code=t.data,this.onError(e);break;case"message":this.emitReserved("data",t.data),this.emitReserved("message",t.data)}}},{key:"onHandshake",value:function(t){this.emitReserved("handshake",t),this.id=t.sid,this.transport.query.sid=t.sid,this.upgrades=this.filterUpgrades(t.upgrades),this.pingInterval=t.pingInterval,this.pingTimeout=t.pingTimeout,this.onOpen(),"closed"!==this.readyState&&this.resetPingTimeout()}},{key:"resetPingTimeout",value:function(){var t=this;this.clearTimeoutFn(this.pingTimeoutTimer),this.pingTimeoutTimer=this.setTimeoutFn((function(){t.onClose("ping timeout")}),this.pingInterval+this.pingTimeout),this.opts.autoUnref&&this.pingTimeoutTimer.unref()}},{key:"onDrain",value:function(){this.writeBuffer.splice(0,this.prevBufferLen),this.prevBufferLen=0,0===this.writeBuffer.length?this.emitReserved("drain"):this.flush()}},{key:"flush",value:function(){"closed"!==this.readyState&&this.transport.writable&&!this.upgrading&&this.writeBuffer.length&&(this.transport.send(this.writeBuffer),this.prevBufferLen=this.writeBuffer.length,this.emitReserved("flush"))}},{key:"write",value:function(t,e,n){return this.sendPacket("message",t,e,n),this}},{key:"send",value:function(t,e,n){return this.sendPacket("message",t,e,n),this}},{key:"sendPacket",value:function(t,e,n,r){if("function"==typeof e&&(r=e,e=void 0),"function"==typeof n&&(r=n,n=null),"closing"!==this.readyState&&"closed"!==this.readyState){(n=n||{}).compress=!1!==n.compress;var o={type:t,data:e,options:n};this.emitReserved("packetCreate",o),this.writeBuffer.push(o),r&&this.once("flush",r),this.flush()}}},{key:"close",value:function(){var t=this,e=function(){t.onClose("forced close"),t.transport.close()},n=function n(){t.off("upgrade",n),t.off("upgradeError",n),e()},r=function(){t.once("upgrade",n),t.once("upgradeError",n)};return"opening"!==this.readyState&&"open"!==this.readyState||(this.readyState="closing",this.writeBuffer.length?this.once("drain",(function(){t.upgrading?r():e()})):this.upgrading?r():e()),this}},{key:"onError",value:function(t){a.priorWebsocketSuccess=!1,this.emitReserved("error",t),this.onClose("transport error",t)}},{key:"onClose",value:function(t,e){"opening"!==this.readyState&&"open"!==this.readyState&&"closing"!==this.readyState||(this.clearTimeoutFn(this.pingTimeoutTimer),this.transport.removeAllListeners("close"),this.transport.close(),this.transport.removeAllListeners(),"function"==typeof removeEventListener&&removeEventListener("offline",this.offlineEventListener,!1),this.readyState="closed",this.id=null,this.emitReserved("close",t,e),this.writeBuffer=[],this.prevBufferLen=0)}},{key:"filterUpgrades",value:function(t){for(var e=[],n=0,r=t.length;n<r;n++)~this.transports.indexOf(t[n])&&e.push(t[n]);return e}}]),a}(R);ut.protocol=4;var ht="function"==typeof ArrayBuffer,ft=Object.prototype.toString,lt="function"==typeof Blob||"undefined"!=typeof Blob&&"[object BlobConstructor]"===ft.call(Blob),pt="function"==typeof File||"undefined"!=typeof File&&"[object FileConstructor]"===ft.call(File);function dt(t){return ht&&(t instanceof ArrayBuffer||function(t){return"function"==typeof ArrayBuffer.isView?ArrayBuffer.isView(t):t.buffer instanceof ArrayBuffer}(t))||lt&&t instanceof Blob||pt&&t instanceof File}function yt(e,n){if(!e||"object"!==t(e))return!1;if(Array.isArray(e)){for(var r=0,o=e.length;r<o;r++)if(yt(e[r]))return!0;return!1}if(dt(e))return!0;if(e.toJSON&&"function"==typeof e.toJSON&&1===arguments.length)return yt(e.toJSON(),!0);for(var i in e)if(Object.prototype.hasOwnProperty.call(e,i)&&yt(e[i]))return!0;return!1}function vt(t){var e=[],n=t.data,r=t;return r.data=mt(n,e),r.attachments=e.length,{packet:r,buffers:e}}function mt(e,n){if(!e)return e;if(dt(e)){var r={_placeholder:!0,num:n.length};return n.push(e),r}if(Array.isArray(e)){for(var o=new Array(e.length),i=0;i<e.length;i++)o[i]=mt(e[i],n);return o}if("object"===t(e)&&!(e instanceof Date)){var s={};for(var a in e)e.hasOwnProperty(a)&&(s[a]=mt(e[a],n));return s}return e}function gt(t,e){return t.data=kt(t.data,e),t.attachments=void 0,t}function kt(e,n){if(!e)return e;if(e&&e._placeholder)return n[e.num];if(Array.isArray(e))for(var r=0;r<e.length;r++)e[r]=kt(e[r],n);else if("object"===t(e))for(var o in e)e.hasOwnProperty(o)&&(e[o]=kt(e[o],n));return e}var bt;!function(t){t[t.CONNECT=0]="CONNECT",t[t.DISCONNECT=1]="DISCONNECT",t[t.EVENT=2]="EVENT",t[t.ACK=3]="ACK",t[t.CONNECT_ERROR=4]="CONNECT_ERROR",t[t.BINARY_EVENT=5]="BINARY_EVENT",t[t.BINARY_ACK=6]="BINARY_ACK"}(bt||(bt={}));var wt=function(){function t(){e(this,t)}return r(t,[{key:"encode",value:function(t){return t.type!==bt.EVENT&&t.type!==bt.ACK||!yt(t)?[this.encodeAsString(t)]:(t.type=t.type===bt.EVENT?bt.BINARY_EVENT:bt.BINARY_ACK,this.encodeAsBinary(t))}},{key:"encodeAsString",value:function(t){var e=""+t.type;return t.type!==bt.BINARY_EVENT&&t.type!==bt.BINARY_ACK||(e+=t.attachments+"-"),t.nsp&&"/"!==t.nsp&&(e+=t.nsp+","),null!=t.id&&(e+=t.id),null!=t.data&&(e+=JSON.stringify(t.data)),e}},{key:"encodeAsBinary",value:function(t){var e=vt(t),n=this.encodeAsString(e.packet),r=e.buffers;return r.unshift(n),r}}]),t}(),_t=function(n){i(a,n);var o=h(a);function a(){return e(this,a),o.call(this)}return r(a,[{key:"add",value:function(t){var e;if("string"==typeof t)(e=this.decodeString(t)).type===bt.BINARY_EVENT||e.type===bt.BINARY_ACK?(this.reconstructor=new Et(e),0===e.attachments&&f(s(a.prototype),"emitReserved",this).call(this,"decoded",e)):f(s(a.prototype),"emitReserved",this).call(this,"decoded",e);else{if(!dt(t)&&!t.base64)throw new Error("Unknown type: "+t);if(!this.reconstructor)throw new Error("got binary data when not reconstructing a packet");(e=this.reconstructor.takeBinaryData(t))&&(this.reconstructor=null,f(s(a.prototype),"emitReserved",this).call(this,"decoded",e))}}},{key:"decodeString",value:function(t){var e=0,n={type:Number(t.charAt(0))};if(void 0===bt[n.type])throw new Error("unknown packet type "+n.type);if(n.type===bt.BINARY_EVENT||n.type===bt.BINARY_ACK){for(var r=e+1;"-"!==t.charAt(++e)&&e!=t.length;);var o=t.substring(r,e);if(o!=Number(o)||"-"!==t.charAt(e))throw new Error("Illegal attachments");n.attachments=Number(o)}if("/"===t.charAt(e+1)){for(var i=e+1;++e;){if(","===t.charAt(e))break;if(e===t.length)break}n.nsp=t.substring(i,e)}else n.nsp="/";var s=t.charAt(e+1);if(""!==s&&Number(s)==s){for(var c=e+1;++e;){var u=t.charAt(e);if(null==u||Number(u)!=u){--e;break}if(e===t.length)break}n.id=Number(t.substring(c,e+1))}if(t.charAt(++e)){var h=function(t){try{return JSON.parse(t)}catch(t){return!1}}(t.substr(e));if(!a.isPayloadValid(n.type,h))throw new Error("invalid payload");n.data=h}return n}},{key:"destroy",value:function(){this.reconstructor&&this.reconstructor.finishedReconstruction()}}],[{key:"isPayloadValid",value:function(e,n){switch(e){case bt.CONNECT:return"object"===t(n);case bt.DISCONNECT:return void 0===n;case bt.CONNECT_ERROR:return"string"==typeof n||"object"===t(n);case bt.EVENT:case bt.BINARY_EVENT:return Array.isArray(n)&&n.length>0;case bt.ACK:case bt.BINARY_ACK:return Array.isArray(n)}}}]),a}(R);var Et=function(){function t(n){e(this,t),this.packet=n,this.buffers=[],this.reconPack=n}return r(t,[{key:"takeBinaryData",value:function(t){if(this.buffers.push(t),this.buffers.length===this.reconPack.attachments){var e=gt(this.reconPack,this.buffers);return this.finishedReconstruction(),e}return null}},{key:"finishedReconstruction",value:function(){this.reconPack=null,this.buffers=[]}}]),t}(),At=Object.freeze({__proto__:null,protocol:5,get PacketType(){return bt},Encoder:wt,Decoder:_t});function Rt(t,e,n){return t.on(e,n),function(){t.off(e,n)}}var Tt=Object.freeze({connect:1,connect_error:1,disconnect:1,disconnecting:1,newListener:1,removeListener:1}),Ct=function(t){i(o,t);var n=h(o);function o(t,r,i){var s;return e(this,o),(s=n.call(this)).connected=!1,s.disconnected=!0,s.receiveBuffer=[],s.sendBuffer=[],s.ids=0,s.acks={},s.flags={},s.io=t,s.nsp=r,i&&i.auth&&(s.auth=i.auth),s.io._autoConnect&&s.open(),s}return r(o,[{key:"subEvents",value:function(){if(!this.subs){var t=this.io;this.subs=[Rt(t,"open",this.onopen.bind(this)),Rt(t,"packet",this.onpacket.bind(this)),Rt(t,"error",this.onerror.bind(this)),Rt(t,"close",this.onclose.bind(this))]}}},{key:"active",get:function(){return!!this.subs}},{key:"connect",value:function(){return this.connected||(this.subEvents(),this.io._reconnecting||this.io.open(),"open"===this.io._readyState&&this.onopen()),this}},{key:"open",value:function(){return this.connect()}},{key:"send",value:function(){for(var t=arguments.length,e=new Array(t),n=0;n<t;n++)e[n]=arguments[n];return e.unshift("message"),this.emit.apply(this,e),this}},{key:"emit",value:function(t){if(Tt.hasOwnProperty(t))throw new Error('"'+t+'" is a reserved event name');for(var e=arguments.length,n=new Array(e>1?e-1:0),r=1;r<e;r++)n[r-1]=arguments[r];n.unshift(t);var o={type:bt.EVENT,data:n,options:{}};if(o.options.compress=!1!==this.flags.compress,"function"==typeof n[n.length-1]){var i=this.ids++,s=n.pop();this._registerAckCallback(i,s),o.id=i}var a=this.io.engine&&this.io.engine.transport&&this.io.engine.transport.writable,c=this.flags.volatile&&(!a||!this.connected);return c||(this.connected?this.packet(o):this.sendBuffer.push(o)),this.flags={},this}},{key:"_registerAckCallback",value:function(t,e){var n=this,r=this.flags.timeout;if(void 0!==r){var o=this.io.setTimeoutFn((function(){delete n.acks[t];for(var r=0;r<n.sendBuffer.length;r++)n.sendBuffer[r].id===t&&n.sendBuffer.splice(r,1);e.call(n,new Error("operation has timed out"))}),r);this.acks[t]=function(){n.io.clearTimeoutFn(o);for(var t=arguments.length,r=new Array(t),i=0;i<t;i++)r[i]=arguments[i];e.apply(n,[null].concat(r))}}else this.acks[t]=e}},{key:"packet",value:function(t){t.nsp=this.nsp,this.io._packet(t)}},{key:"onopen",value:function(){var t=this;"function"==typeof this.auth?this.auth((function(e){t.packet({type:bt.CONNECT,data:e})})):this.packet({type:bt.CONNECT,data:this.auth})}},{key:"onerror",value:function(t){this.connected||this.emitReserved("connect_error",t)}},{key:"onclose",value:function(t){this.connected=!1,this.disconnected=!0,delete this.id,this.emitReserved("disconnect",t)}},{key:"onpacket",value:function(t){if(t.nsp===this.nsp)switch(t.type){case bt.CONNECT:if(t.data&&t.data.sid){var e=t.data.sid;this.onconnect(e)}else this.emitReserved("connect_error",new Error("It seems you are trying to reach a Socket.IO server in v2.x with a v3.x client, but they are not compatible (more information here: https://socket.io/docs/v3/migrating-from-2-x-to-3-0/)"));break;case bt.EVENT:case bt.BINARY_EVENT:this.onevent(t);break;case bt.ACK:case bt.BINARY_ACK:this.onack(t);break;case bt.DISCONNECT:this.ondisconnect();break;case bt.CONNECT_ERROR:this.destroy();var n=new Error(t.data.message);n.data=t.data.data,this.emitReserved("connect_error",n)}}},{key:"onevent",value:function(t){var e=t.data||[];null!=t.id&&e.push(this.ack(t.id)),this.connected?this.emitEvent(e):this.receiveBuffer.push(Object.freeze(e))}},{key:"emitEvent",value:function(t){if(this._anyListeners&&this._anyListeners.length){var e,n=p(this._anyListeners.slice());try{for(n.s();!(e=n.n()).done;){e.value.apply(this,t)}}catch(t){n.e(t)}finally{n.f()}}f(s(o.prototype),"emit",this).apply(this,t)}},{key:"ack",value:function(t){var e=this,n=!1;return function(){if(!n){n=!0;for(var r=arguments.length,o=new Array(r),i=0;i<r;i++)o[i]=arguments[i];e.packet({type:bt.ACK,id:t,data:o})}}}},{key:"onack",value:function(t){var e=this.acks[t.id];"function"==typeof e&&(e.apply(this,t.data),delete this.acks[t.id])}},{key:"onconnect",value:function(t){this.id=t,this.connected=!0,this.disconnected=!1,this.emitBuffered(),this.emitReserved("connect")}},{key:"emitBuffered",value:function(){var t=this;this.receiveBuffer.forEach((function(e){return t.emitEvent(e)})),this.receiveBuffer=[],this.sendBuffer.forEach((function(e){return t.packet(e)})),this.sendBuffer=[]}},{key:"ondisconnect",value:function(){this.destroy(),this.onclose("io server disconnect")}},{key:"destroy",value:function(){this.subs&&(this.subs.forEach((function(t){return t()})),this.subs=void 0),this.io._destroy(this)}},{key:"disconnect",value:function(){return this.connected&&this.packet({type:bt.DISCONNECT}),this.destroy(),this.connected&&this.onclose("io client disconnect"),this}},{key:"close",value:function(){return this.disconnect()}},{key:"compress",value:function(t){return this.flags.compress=t,this}},{key:"volatile",get:function(){return this.flags.volatile=!0,this}},{key:"timeout",value:function(t){return this.flags.timeout=t,this}},{key:"onAny",value:function(t){return this._anyListeners=this._anyListeners||[],this._anyListeners.push(t),this}},{key:"prependAny",value:function(t){return this._anyListeners=this._anyListeners||[],this._anyListeners.unshift(t),this}},{key:"offAny",value:function(t){if(!this._anyListeners)return this;if(t){for(var e=this._anyListeners,n=0;n<e.length;n++)if(t===e[n])return e.splice(n,1),this}else this._anyListeners=[];return this}},{key:"listenersAny",value:function(){return this._anyListeners||[]}}]),o}(R),Ot=St;function St(t){t=t||{},this.ms=t.min||100,this.max=t.max||1e4,this.factor=t.factor||2,this.jitter=t.jitter>0&&t.jitter<=1?t.jitter:0,this.attempts=0}St.prototype.duration=function(){var t=this.ms*Math.pow(this.factor,this.attempts++);if(this.jitter){var e=Math.random(),n=Math.floor(e*this.jitter*t);t=0==(1&Math.floor(10*e))?t-n:t+n}return 0|Math.min(t,this.max)},St.prototype.reset=function(){this.attempts=0},St.prototype.setMin=function(t){this.ms=t},St.prototype.setMax=function(t){this.max=t},St.prototype.setJitter=function(t){this.jitter=t};var Bt=function(n){i(s,n);var o=h(s);function s(n,r){var i,a;e(this,s),(i=o.call(this)).nsps={},i.subs=[],n&&"object"===t(n)&&(r=n,n=void 0),(r=r||{}).path=r.path||"/socket.io",i.opts=r,A(c(i),r),i.reconnection(!1!==r.reconnection),i.reconnectionAttempts(r.reconnectionAttempts||1/0),i.reconnectionDelay(r.reconnectionDelay||1e3),i.reconnectionDelayMax(r.reconnectionDelayMax||5e3),i.randomizationFactor(null!==(a=r.randomizationFactor)&&void 0!==a?a:.5),i.backoff=new Ot({min:i.reconnectionDelay(),max:i.reconnectionDelayMax(),jitter:i.randomizationFactor()}),i.timeout(null==r.timeout?2e4:r.timeout),i._readyState="closed",i.uri=n;var u=r.parser||At;return i.encoder=new u.Encoder,i.decoder=new u.Decoder,i._autoConnect=!1!==r.autoConnect,i._autoConnect&&i.open(),i}return r(s,[{key:"reconnection",value:function(t){return arguments.length?(this._reconnection=!!t,this):this._reconnection}},{key:"reconnectionAttempts",value:function(t){return void 0===t?this._reconnectionAttempts:(this._reconnectionAttempts=t,this)}},{key:"reconnectionDelay",value:function(t){var e;return void 0===t?this._reconnectionDelay:(this._reconnectionDelay=t,null===(e=this.backoff)||void 0===e||e.setMin(t),this)}},{key:"randomizationFactor",value:function(t){var e;return void 0===t?this._randomizationFactor:(this._randomizationFactor=t,null===(e=this.backoff)||void 0===e||e.setJitter(t),this)}},{key:"reconnectionDelayMax",value:function(t){var e;return void 0===t?this._reconnectionDelayMax:(this._reconnectionDelayMax=t,null===(e=this.backoff)||void 0===e||e.setMax(t),this)}},{key:"timeout",value:function(t){return arguments.length?(this._timeout=t,this):this._timeout}},{key:"maybeReconnectOnOpen",value:function(){!this._reconnecting&&this._reconnection&&0===this.backoff.attempts&&this.reconnect()}},{key:"open",value:function(t){var e=this;if(~this._readyState.indexOf("open"))return this;this.engine=new ut(this.uri,this.opts);var n=this.engine,r=this;this._readyState="opening",this.skipReconnect=!1;var o=Rt(n,"open",(function(){r.onopen(),t&&t()})),i=Rt(n,"error",(function(n){r.cleanup(),r._readyState="closed",e.emitReserved("error",n),t?t(n):r.maybeReconnectOnOpen()}));if(!1!==this._timeout){var s=this._timeout;0===s&&o();var a=this.setTimeoutFn((function(){o(),n.close(),n.emit("error",new Error("timeout"))}),s);this.opts.autoUnref&&a.unref(),this.subs.push((function(){clearTimeout(a)}))}return this.subs.push(o),this.subs.push(i),this}},{key:"connect",value:function(t){return this.open(t)}},{key:"onopen",value:function(){this.cleanup(),this._readyState="open",this.emitReserved("open");var t=this.engine;this.subs.push(Rt(t,"ping",this.onping.bind(this)),Rt(t,"data",this.ondata.bind(this)),Rt(t,"error",this.onerror.bind(this)),Rt(t,"close",this.onclose.bind(this)),Rt(this.decoder,"decoded",this.ondecoded.bind(this)))}},{key:"onping",value:function(){this.emitReserved("ping")}},{key:"ondata",value:function(t){this.decoder.add(t)}},{key:"ondecoded",value:function(t){this.emitReserved("packet",t)}},{key:"onerror",value:function(t){this.emitReserved("error",t)}},{key:"socket",value:function(t,e){var n=this.nsps[t];return n||(n=new Ct(this,t,e),this.nsps[t]=n),n}},{key:"_destroy",value:function(t){for(var e=0,n=Object.keys(this.nsps);e<n.length;e++){var r=n[e];if(this.nsps[r].active)return}this._close()}},{key:"_packet",value:function(t){for(var e=this.encoder.encode(t),n=0;n<e.length;n++)this.engine.write(e[n],t.options)}},{key:"cleanup",value:function(){this.subs.forEach((function(t){return t()})),this.subs.length=0,this.decoder.destroy()}},{key:"_close",value:function(){this.skipReconnect=!0,this._reconnecting=!1,this.onclose("forced close"),this.engine&&this.engine.close()}},{key:"disconnect",value:function(){return this._close()}},{key:"onclose",value:function(t){this.cleanup(),this.backoff.reset(),this._readyState="closed",this.emitReserved("close",t),this._reconnection&&!this.skipReconnect&&this.reconnect()}},{key:"reconnect",value:function(){var t=this;if(this._reconnecting||this.skipReconnect)return this;var e=this;if(this.backoff.attempts>=this._reconnectionAttempts)this.backoff.reset(),this.emitReserved("reconnect_failed"),this._reconnecting=!1;else{var n=this.backoff.duration();this._reconnecting=!0;var r=this.setTimeoutFn((function(){e.skipReconnect||(t.emitReserved("reconnect_attempt",e.backoff.attempts),e.skipReconnect||e.open((function(n){n?(e._reconnecting=!1,e.reconnect(),t.emitReserved("reconnect_error",n)):e.onreconnect()})))}),n);this.opts.autoUnref&&r.unref(),this.subs.push((function(){clearTimeout(r)}))}}},{key:"onreconnect",value:function(){var t=this.backoff.attempts;this._reconnecting=!1,this.backoff.reset(),this.emitReserved("reconnect",t)}}]),s}(R),Nt={};function xt(e,n){"object"===t(e)&&(n=e,e=void 0);var r,o=function(t){var e=arguments.length>1&&void 0!==arguments[1]?arguments[1]:"",n=arguments.length>2?arguments[2]:void 0,r=t;n=n||"undefined"!=typeof location&&location,null==t&&(t=n.protocol+"//"+n.host),"string"==typeof t&&("/"===t.charAt(0)&&(t="/"===t.charAt(1)?n.protocol+t:n.host+t),/^(https?|wss?):\/\//.test(t)||(t=void 0!==n?n.protocol+"//"+t:"https://"+t),r=v(t)),r.port||(/^(http|ws)$/.test(r.protocol)?r.port="80":/^(http|ws)s$/.test(r.protocol)&&(r.port="443")),r.path=r.path||"/";var o=-1!==r.host.indexOf(":")?"["+r.host+"]":r.host;return r.id=r.protocol+"://"+o+":"+r.port+e,r.href=r.protocol+"://"+o+(n&&n.port===r.port?"":":"+r.port),r}(e,(n=n||{}).path||"/socket.io"),i=o.source,s=o.id,a=o.path,c=Nt[s]&&a in Nt[s].nsps;return n.forceNew||n["force new connection"]||!1===n.multiplex||c?r=new Bt(i,n):(Nt[s]||(Nt[s]=new Bt(i,n)),r=Nt[s]),o.query&&!n.query&&(n.query=o.queryKey),r.socket(o.path,n)}return o(xt,{Manager:Bt,Socket:Ct,io:xt,connect:xt}),xt}));
+!function(t,e){"object"==typeof exports&&"object"==typeof module?module.exports=e():"function"==typeof define&&define.amd?define([],e):"object"==typeof exports?exports.io=e():t.io=e()}(this,(function(){return function(t){var e={};function n(r){if(e[r])return e[r].exports;var o=e[r]={i:r,l:!1,exports:{}};return t[r].call(o.exports,o,o.exports,n),o.l=!0,o.exports}return n.m=t,n.c=e,n.d=function(t,e,r){n.o(t,e)||Object.defineProperty(t,e,{enumerable:!0,get:r})},n.r=function(t){"undefined"!=typeof Symbol&&Symbol.toStringTag&&Object.defineProperty(t,Symbol.toStringTag,{value:"Module"}),Object.defineProperty(t,"__esModule",{value:!0})},n.t=function(t,e){if(1&e&&(t=n(t)),8&e)return t;if(4&e&&"object"==typeof t&&t&&t.__esModule)return t;var r=Object.create(null);if(n.r(r),Object.defineProperty(r,"default",{enumerable:!0,value:t}),2&e&&"string"!=typeof t)for(var o in t)n.d(r,o,function(e){return t[e]}.bind(null,o));return r},n.n=function(t){var e=t&&t.__esModule?function(){return t.default}:function(){return t};return n.d(e,"a",e),e},n.o=function(t,e){return Object.prototype.hasOwnProperty.call(t,e)},n.p="",n(n.s=17)}([function(t,e,n){function r(t){if(t)return function(t){for(var e in r.prototype)t[e]=r.prototype[e];return t}(t)}t.exports=r,r.prototype.on=r.prototype.addEventListener=function(t,e){return this._callbacks=this._callbacks||{},(this._callbacks["$"+t]=this._callbacks["$"+t]||[]).push(e),this},r.prototype.once=function(t,e){function n(){this.off(t,n),e.apply(this,arguments)}return n.fn=e,this.on(t,n),this},r.prototype.off=r.prototype.removeListener=r.prototype.removeAllListeners=r.prototype.removeEventListener=function(t,e){if(this._callbacks=this._callbacks||{},0==arguments.length)return this._callbacks={},this;var n,r=this._callbacks["$"+t];if(!r)return this;if(1==arguments.length)return delete this._callbacks["$"+t],this;for(var o=0;o<r.length;o++)if((n=r[o])===e||n.fn===e){r.splice(o,1);break}return 0===r.length&&delete 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l,h=n(0),y=n(29),d=n(15);e.protocol=5,function(t){t[t.CONNECT=0]="CONNECT",t[t.DISCONNECT=1]="DISCONNECT",t[t.EVENT=2]="EVENT",t[t.ACK=3]="ACK",t[t.CONNECT_ERROR=4]="CONNECT_ERROR",t[t.BINARY_EVENT=5]="BINARY_EVENT",t[t.BINARY_ACK=6]="BINARY_ACK"}(l=e.PacketType||(e.PacketType={}));var v=function(){function t(){u(this,t)}return p(t,[{key:"encode",value:function(t){return t.type!==l.EVENT&&t.type!==l.ACK||!d.hasBinary(t)?[this.encodeAsString(t)]:(t.type=t.type===l.EVENT?l.BINARY_EVENT:l.BINARY_ACK,this.encodeAsBinary(t))}},{key:"encodeAsString",value:function(t){var e=""+t.type;return t.type!==l.BINARY_EVENT&&t.type!==l.BINARY_ACK||(e+=t.attachments+"-"),t.nsp&&"/"!==t.nsp&&(e+=t.nsp+","),null!=t.id&&(e+=t.id),null!=t.data&&(e+=JSON.stringify(t.data)),e}},{key:"encodeAsBinary",value:function(t){var e=y.deconstructPacket(t),n=this.encodeAsString(e.packet),r=e.buffers;return r.unshift(n),r}}]),t}();e.Encoder=v;var b=function(t){!function(t,e){if("function"!=typeof e&&null!==e)throw new 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t=this.query||{},e=this.opts.secure?"wss":"ws",n="";return this.opts.port&&("wss"===e&&443!==Number(this.opts.port)||"ws"===e&&80!==Number(this.opts.port))&&(n=":"+this.opts.port),this.opts.timestampRequests&&(t[this.opts.timestampParam]=l()),this.supportsBinary||(t.b64=1),(t=p.encode(t)).length&&(t="?"+t),e+"://"+(-1!==this.opts.hostname.indexOf(":")?"["+this.opts.hostname+"]":this.opts.hostname)+n+this.opts.path+t}},{key:"check",value:function(){return!(!d||"__initialize"in d&&this.name===a.prototype.name)}},{key:"name",get:function(){return"websocket"}}])&&o(e.prototype,n),r&&o(e,r),a}(u);t.exports=g},function(t,e,n){var r=n(2);t.exports={WebSocket:r.WebSocket||r.MozWebSocket,usingBrowserWebSocket:!0,defaultBinaryType:"arraybuffer"}},function(t,e,n){"use strict";function r(t){return(r="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(t){return typeof t}:function(t){return t&&"function"==typeof Symbol&&t.constructor===Symbol&&t!==Symbol.prototype?"symbol":typeof t})(t)}Object.defineProperty(e,"__esModule",{value:!0}),e.reconstructPacket=e.deconstructPacket=void 0;var o=n(15);e.deconstructPacket=function(t){var e=[],n=t.data,i=t;return i.data=function t(e,n){if(!e)return e;if(o.isBinary(e)){var i={_placeholder:!0,num:n.length};return n.push(e),i}if(Array.isArray(e)){for(var s=new Array(e.length),c=0;c<e.length;c++)s[c]=t(e[c],n);return s}if("object"===r(e)&&!(e instanceof Date)){var a={};for(var u in e)e.hasOwnProperty(u)&&(a[u]=t(e[u],n));return a}return e}(n,e),i.attachments=e.length,{packet:i,buffers:e}},e.reconstructPacket=function(t,e){return t.data=function t(e,n){if(!e)return e;if(e&&e._placeholder)return n[e.num];if(Array.isArray(e))for(var o=0;o<e.length;o++)e[o]=t(e[o],n);else if("object"===r(e))for(var i in e)e.hasOwnProperty(i)&&(e[i]=t(e[i],n));return e}(t.data,e),t.attachments=void 0,t}},function(t,e){function n(t){t=t||{},this.ms=t.min||100,this.max=t.max||1e4,this.factor=t.factor||2,this.jitter=t.jitter>0&&t.jitter<=1?t.jitter:0,this.attempts=0}t.exports=n,n.prototype.duration=function(){var t=this.ms*Math.pow(this.factor,this.attempts++);if(this.jitter){var e=Math.random(),n=Math.floor(e*this.jitter*t);t=0==(1&Math.floor(10*e))?t-n:t+n}return 0|Math.min(t,this.max)},n.prototype.reset=function(){this.attempts=0},n.prototype.setMin=function(t){this.ms=t},n.prototype.setMax=function(t){this.max=t},n.prototype.setJitter=function(t){this.jitter=t}}])}));
 //# sourceMappingURL=socket.io.min.js.map
Index: trip-planner-front/node_modules/socket.io/client-dist/socket.io.min.js.map
===================================================================
--- trip-planner-front/node_modules/socket.io/client-dist/socket.io.min.js.map	(revision 571e0df9a7a5e798c9941a85842f785177bedbbd)
+++ trip-planner-front/node_modules/socket.io/client-dist/socket.io.min.js.map	(revision 6a3a178323fd905112b5392bd9d3cb83b66ef2d3)
@@ -1,1 +1,1 @@
-{"version":3,"file":"socket.io.min.js","sources":["../node_modules/parseuri/index.js","../node_modules/has-cors/index.js","../node_modules/engine.io-client/build/esm/globalThis.browser.js","../node_modules/engine.io-client/build/esm/transports/xmlhttprequest.browser.js","../node_modules/engine.io-client/build/esm/util.js","../node_modules/@socket.io/component-emitter/index.js","../node_modules/engine.io-client/node_modules/engine.io-parser/build/esm/commons.js","../node_modules/engine.io-client/node_modules/base64-arraybuffer/dist/base64-arraybuffer.es5.js","../node_modules/engine.io-client/node_modules/engine.io-parser/build/esm/encodePacket.browser.js","../node_modules/yeast/index.js","../node_modules/engine.io-client/node_modules/engine.io-parser/build/esm/decodePacket.browser.js","../node_modules/engine.io-client/node_modules/engine.io-parser/build/esm/index.js","../node_modules/engine.io-client/build/esm/transport.js","../node_modules/parseqs/index.js","../node_modules/engine.io-client/build/esm/transports/polling.js","../node_modules/engine.io-client/build/esm/transports/polling-xhr.js","../node_modules/engine.io-client/build/esm/transports/websocket-constructor.browser.js","../node_modules/engine.io-client/build/esm/transports/websocket.js","../node_modules/engine.io-client/build/esm/transports/index.js","../node_modules/engine.io-client/build/esm/socket.js","../node_modules/socket.io-parser/build/esm/is-binary.js","../node_modules/socket.io-parser/build/esm/binary.js","../node_modules/socket.io-parser/build/esm/index.js","../build/esm/on.js","../build/esm/socket.js","../node_modules/backo2/index.js","../build/esm/manager.js","../build/esm/index.js","../build/esm/url.js"],"sourcesContent":["/**\n * Parses an URI\n *\n * @author Steven Levithan <stevenlevithan.com> (MIT license)\n * @api private\n */\n\nvar re = /^(?:(?![^:@]+:[^:@\\/]*@)(http|https|ws|wss):\\/\\/)?((?:(([^:@]*)(?::([^:@]*))?)?@)?((?:[a-f0-9]{0,4}:){2,7}[a-f0-9]{0,4}|[^:\\/?#]*)(?::(\\d*))?)(((\\/(?:[^?#](?![^?#\\/]*\\.[^?#\\/.]+(?:[?#]|$)))*\\/?)?([^?#\\/]*))(?:\\?([^#]*))?(?:#(.*))?)/;\n\nvar parts = [\n    'source', 'protocol', 'authority', 'userInfo', 'user', 'password', 'host', 'port', 'relative', 'path', 'directory', 'file', 'query', 'anchor'\n];\n\nmodule.exports = function parseuri(str) {\n    var src = str,\n        b = str.indexOf('['),\n        e = str.indexOf(']');\n\n    if (b != -1 && e != -1) {\n        str = str.substring(0, b) + str.substring(b, e).replace(/:/g, ';') + str.substring(e, str.length);\n    }\n\n    var m = re.exec(str || ''),\n        uri = {},\n        i = 14;\n\n    while (i--) {\n        uri[parts[i]] = m[i] || '';\n    }\n\n    if (b != -1 && e != -1) {\n        uri.source = src;\n        uri.host = uri.host.substring(1, uri.host.length - 1).replace(/;/g, ':');\n        uri.authority = uri.authority.replace('[', '').replace(']', '').replace(/;/g, ':');\n        uri.ipv6uri = true;\n    }\n\n    uri.pathNames = pathNames(uri, uri['path']);\n    uri.queryKey = queryKey(uri, uri['query']);\n\n    return uri;\n};\n\nfunction pathNames(obj, path) {\n    var regx = /\\/{2,9}/g,\n        names = path.replace(regx, \"/\").split(\"/\");\n\n    if (path.substr(0, 1) == '/' || path.length === 0) {\n        names.splice(0, 1);\n    }\n    if (path.substr(path.length - 1, 1) == '/') {\n        names.splice(names.length - 1, 1);\n    }\n\n    return names;\n}\n\nfunction queryKey(uri, query) {\n    var data = {};\n\n    query.replace(/(?:^|&)([^&=]*)=?([^&]*)/g, function ($0, $1, $2) {\n        if ($1) {\n            data[$1] = $2;\n        }\n    });\n\n    return data;\n}\n","\n/**\n * Module exports.\n *\n * Logic borrowed from Modernizr:\n *\n *   - https://github.com/Modernizr/Modernizr/blob/master/feature-detects/cors.js\n */\n\ntry {\n  module.exports = typeof XMLHttpRequest !== 'undefined' &&\n    'withCredentials' in new XMLHttpRequest();\n} catch (err) {\n  // if XMLHttp support is disabled in IE then it will throw\n  // when trying to create\n  module.exports = false;\n}\n","export default (() => {\n    if (typeof self !== \"undefined\") {\n        return self;\n    }\n    else if (typeof window !== \"undefined\") {\n        return window;\n    }\n    else {\n        return Function(\"return this\")();\n    }\n})();\n","// browser shim for xmlhttprequest module\nimport hasCORS from \"has-cors\";\nimport globalThis from \"../globalThis.js\";\nexport default function (opts) {\n    const xdomain = opts.xdomain;\n    // XMLHttpRequest can be disabled on IE\n    try {\n        if (\"undefined\" !== typeof XMLHttpRequest && (!xdomain || hasCORS)) {\n            return new XMLHttpRequest();\n        }\n    }\n    catch (e) { }\n    if (!xdomain) {\n        try {\n            return new globalThis[[\"Active\"].concat(\"Object\").join(\"X\")](\"Microsoft.XMLHTTP\");\n        }\n        catch (e) { }\n    }\n}\n","import globalThis from \"./globalThis.js\";\nexport function pick(obj, ...attr) {\n    return attr.reduce((acc, k) => {\n        if (obj.hasOwnProperty(k)) {\n            acc[k] = obj[k];\n        }\n        return acc;\n    }, {});\n}\n// Keep a reference to the real timeout functions so they can be used when overridden\nconst NATIVE_SET_TIMEOUT = setTimeout;\nconst NATIVE_CLEAR_TIMEOUT = clearTimeout;\nexport function installTimerFunctions(obj, opts) {\n    if (opts.useNativeTimers) {\n        obj.setTimeoutFn = NATIVE_SET_TIMEOUT.bind(globalThis);\n        obj.clearTimeoutFn = NATIVE_CLEAR_TIMEOUT.bind(globalThis);\n    }\n    else {\n        obj.setTimeoutFn = setTimeout.bind(globalThis);\n        obj.clearTimeoutFn = clearTimeout.bind(globalThis);\n    }\n}\n","\n/**\n * Expose `Emitter`.\n */\n\nexports.Emitter = Emitter;\n\n/**\n * Initialize a new `Emitter`.\n *\n * @api public\n */\n\nfunction Emitter(obj) {\n  if (obj) return mixin(obj);\n}\n\n/**\n * Mixin the emitter properties.\n *\n * @param {Object} obj\n * @return {Object}\n * @api private\n */\n\nfunction mixin(obj) {\n  for (var key in Emitter.prototype) {\n    obj[key] = Emitter.prototype[key];\n  }\n  return obj;\n}\n\n/**\n * Listen on the given `event` with `fn`.\n *\n * @param {String} event\n * @param {Function} fn\n * @return {Emitter}\n * @api public\n */\n\nEmitter.prototype.on =\nEmitter.prototype.addEventListener = function(event, fn){\n  this._callbacks = this._callbacks || {};\n  (this._callbacks['$' + event] = this._callbacks['$' + event] || [])\n    .push(fn);\n  return this;\n};\n\n/**\n * Adds an `event` listener that will be invoked a single\n * time then automatically removed.\n *\n * @param {String} event\n * @param {Function} fn\n * @return {Emitter}\n * @api public\n */\n\nEmitter.prototype.once = function(event, fn){\n  function on() {\n    this.off(event, on);\n    fn.apply(this, arguments);\n  }\n\n  on.fn = fn;\n  this.on(event, on);\n  return this;\n};\n\n/**\n * Remove the given callback for `event` or all\n * registered callbacks.\n *\n * @param {String} event\n * @param {Function} fn\n * @return {Emitter}\n * @api public\n */\n\nEmitter.prototype.off =\nEmitter.prototype.removeListener =\nEmitter.prototype.removeAllListeners =\nEmitter.prototype.removeEventListener = function(event, fn){\n  this._callbacks = this._callbacks || {};\n\n  // all\n  if (0 == arguments.length) {\n    this._callbacks = {};\n    return this;\n  }\n\n  // specific event\n  var callbacks = this._callbacks['$' + event];\n  if (!callbacks) return this;\n\n  // remove all handlers\n  if (1 == arguments.length) {\n    delete this._callbacks['$' + event];\n    return this;\n  }\n\n  // remove specific handler\n  var cb;\n  for (var i = 0; i < callbacks.length; i++) {\n    cb = callbacks[i];\n    if (cb === fn || cb.fn === fn) {\n      callbacks.splice(i, 1);\n      break;\n    }\n  }\n\n  // Remove event specific arrays for event types that no\n  // one is subscribed for to avoid memory leak.\n  if (callbacks.length === 0) {\n    delete this._callbacks['$' + event];\n  }\n\n  return this;\n};\n\n/**\n * Emit `event` with the given args.\n *\n * @param {String} event\n * @param {Mixed} ...\n * @return {Emitter}\n */\n\nEmitter.prototype.emit = function(event){\n  this._callbacks = this._callbacks || {};\n\n  var args = new Array(arguments.length - 1)\n    , callbacks = this._callbacks['$' + event];\n\n  for (var i = 1; i < arguments.length; i++) {\n    args[i - 1] = arguments[i];\n  }\n\n  if (callbacks) {\n    callbacks = callbacks.slice(0);\n    for (var i = 0, len = callbacks.length; i < len; ++i) {\n      callbacks[i].apply(this, args);\n    }\n  }\n\n  return this;\n};\n\n// alias used for reserved events (protected method)\nEmitter.prototype.emitReserved = Emitter.prototype.emit;\n\n/**\n * Return array of callbacks for `event`.\n *\n * @param {String} event\n * @return {Array}\n * @api public\n */\n\nEmitter.prototype.listeners = function(event){\n  this._callbacks = this._callbacks || {};\n  return this._callbacks['$' + event] || [];\n};\n\n/**\n * Check if this emitter has `event` handlers.\n *\n * @param {String} event\n * @return {Boolean}\n * @api public\n */\n\nEmitter.prototype.hasListeners = function(event){\n  return !! this.listeners(event).length;\n};\n","const PACKET_TYPES = Object.create(null); // no Map = no polyfill\nPACKET_TYPES[\"open\"] = \"0\";\nPACKET_TYPES[\"close\"] = \"1\";\nPACKET_TYPES[\"ping\"] = \"2\";\nPACKET_TYPES[\"pong\"] = \"3\";\nPACKET_TYPES[\"message\"] = \"4\";\nPACKET_TYPES[\"upgrade\"] = \"5\";\nPACKET_TYPES[\"noop\"] = \"6\";\nconst PACKET_TYPES_REVERSE = Object.create(null);\nObject.keys(PACKET_TYPES).forEach(key => {\n    PACKET_TYPES_REVERSE[PACKET_TYPES[key]] = key;\n});\nconst ERROR_PACKET = { type: \"error\", data: \"parser error\" };\nexport { PACKET_TYPES, PACKET_TYPES_REVERSE, ERROR_PACKET };\n","/*\n * base64-arraybuffer 1.0.1 <https://github.com/niklasvh/base64-arraybuffer>\n * Copyright (c) 2021 Niklas von Hertzen <https://hertzen.com>\n * Released under MIT License\n */\nvar chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';\n// Use a lookup table to find the index.\nvar lookup = typeof Uint8Array === 'undefined' ? [] : new Uint8Array(256);\nfor (var i = 0; i < chars.length; i++) {\n    lookup[chars.charCodeAt(i)] = i;\n}\nvar encode = function (arraybuffer) {\n    var bytes = new Uint8Array(arraybuffer), i, len = bytes.length, base64 = '';\n    for (i = 0; i < len; i += 3) {\n        base64 += chars[bytes[i] >> 2];\n        base64 += chars[((bytes[i] & 3) << 4) | (bytes[i + 1] >> 4)];\n        base64 += chars[((bytes[i + 1] & 15) << 2) | (bytes[i + 2] >> 6)];\n        base64 += chars[bytes[i + 2] & 63];\n    }\n    if (len % 3 === 2) {\n        base64 = base64.substring(0, base64.length - 1) + '=';\n    }\n    else if (len % 3 === 1) {\n        base64 = base64.substring(0, base64.length - 2) + '==';\n    }\n    return base64;\n};\nvar decode = function (base64) {\n    var bufferLength = base64.length * 0.75, len = base64.length, i, p = 0, encoded1, encoded2, encoded3, encoded4;\n    if (base64[base64.length - 1] === '=') {\n        bufferLength--;\n        if (base64[base64.length - 2] === '=') {\n            bufferLength--;\n        }\n    }\n    var arraybuffer = new ArrayBuffer(bufferLength), bytes = new Uint8Array(arraybuffer);\n    for (i = 0; i < len; i += 4) {\n        encoded1 = lookup[base64.charCodeAt(i)];\n        encoded2 = lookup[base64.charCodeAt(i + 1)];\n        encoded3 = lookup[base64.charCodeAt(i + 2)];\n        encoded4 = lookup[base64.charCodeAt(i + 3)];\n        bytes[p++] = (encoded1 << 2) | (encoded2 >> 4);\n        bytes[p++] = ((encoded2 & 15) << 4) | (encoded3 >> 2);\n        bytes[p++] = ((encoded3 & 3) << 6) | (encoded4 & 63);\n    }\n    return arraybuffer;\n};\n\nexport { decode, encode };\n//# sourceMappingURL=base64-arraybuffer.es5.js.map\n","import { PACKET_TYPES } from \"./commons.js\";\nconst withNativeBlob = typeof Blob === \"function\" ||\n    (typeof Blob !== \"undefined\" &&\n        Object.prototype.toString.call(Blob) === \"[object BlobConstructor]\");\nconst withNativeArrayBuffer = typeof ArrayBuffer === \"function\";\n// ArrayBuffer.isView method is not defined in IE10\nconst isView = obj => {\n    return typeof ArrayBuffer.isView === \"function\"\n        ? ArrayBuffer.isView(obj)\n        : obj && obj.buffer instanceof ArrayBuffer;\n};\nconst encodePacket = ({ type, data }, supportsBinary, callback) => {\n    if (withNativeBlob && data instanceof Blob) {\n        if (supportsBinary) {\n            return callback(data);\n        }\n        else {\n            return encodeBlobAsBase64(data, callback);\n        }\n    }\n    else if (withNativeArrayBuffer &&\n        (data instanceof ArrayBuffer || isView(data))) {\n        if (supportsBinary) {\n            return callback(data);\n        }\n        else {\n            return encodeBlobAsBase64(new Blob([data]), callback);\n        }\n    }\n    // plain string\n    return callback(PACKET_TYPES[type] + (data || \"\"));\n};\nconst encodeBlobAsBase64 = (data, callback) => {\n    const fileReader = new FileReader();\n    fileReader.onload = function () {\n        const content = fileReader.result.split(\",\")[1];\n        callback(\"b\" + content);\n    };\n    return fileReader.readAsDataURL(data);\n};\nexport default encodePacket;\n","'use strict';\n\nvar alphabet = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-_'.split('')\n  , length = 64\n  , map = {}\n  , seed = 0\n  , i = 0\n  , prev;\n\n/**\n * Return a string representing the specified number.\n *\n * @param {Number} num The number to convert.\n * @returns {String} The string representation of the number.\n * @api public\n */\nfunction encode(num) {\n  var encoded = '';\n\n  do {\n    encoded = alphabet[num % length] + encoded;\n    num = Math.floor(num / length);\n  } while (num > 0);\n\n  return encoded;\n}\n\n/**\n * Return the integer value specified by the given string.\n *\n * @param {String} str The string to convert.\n * @returns {Number} The integer value represented by the string.\n * @api public\n */\nfunction decode(str) {\n  var decoded = 0;\n\n  for (i = 0; i < str.length; i++) {\n    decoded = decoded * length + map[str.charAt(i)];\n  }\n\n  return decoded;\n}\n\n/**\n * Yeast: A tiny growing id generator.\n *\n * @returns {String} A unique id.\n * @api public\n */\nfunction yeast() {\n  var now = encode(+new Date());\n\n  if (now !== prev) return seed = 0, prev = now;\n  return now +'.'+ encode(seed++);\n}\n\n//\n// Map each character to its index.\n//\nfor (; i < length; i++) map[alphabet[i]] = i;\n\n//\n// Expose the `yeast`, `encode` and `decode` functions.\n//\nyeast.encode = encode;\nyeast.decode = decode;\nmodule.exports = yeast;\n","import { ERROR_PACKET, PACKET_TYPES_REVERSE } from \"./commons.js\";\nimport { decode } from \"base64-arraybuffer\";\nconst withNativeArrayBuffer = typeof ArrayBuffer === \"function\";\nconst decodePacket = (encodedPacket, binaryType) => {\n    if (typeof encodedPacket !== \"string\") {\n        return {\n            type: \"message\",\n            data: mapBinary(encodedPacket, binaryType)\n        };\n    }\n    const type = encodedPacket.charAt(0);\n    if (type === \"b\") {\n        return {\n            type: \"message\",\n            data: decodeBase64Packet(encodedPacket.substring(1), binaryType)\n        };\n    }\n    const packetType = PACKET_TYPES_REVERSE[type];\n    if (!packetType) {\n        return ERROR_PACKET;\n    }\n    return encodedPacket.length > 1\n        ? {\n            type: PACKET_TYPES_REVERSE[type],\n            data: encodedPacket.substring(1)\n        }\n        : {\n            type: PACKET_TYPES_REVERSE[type]\n        };\n};\nconst decodeBase64Packet = (data, binaryType) => {\n    if (withNativeArrayBuffer) {\n        const decoded = decode(data);\n        return mapBinary(decoded, binaryType);\n    }\n    else {\n        return { base64: true, data }; // fallback for old browsers\n    }\n};\nconst mapBinary = (data, binaryType) => {\n    switch (binaryType) {\n        case \"blob\":\n            return data instanceof ArrayBuffer ? new Blob([data]) : data;\n        case \"arraybuffer\":\n        default:\n            return data; // assuming the data is already an ArrayBuffer\n    }\n};\nexport default decodePacket;\n","import encodePacket from \"./encodePacket.js\";\nimport decodePacket from \"./decodePacket.js\";\nconst SEPARATOR = String.fromCharCode(30); // see https://en.wikipedia.org/wiki/Delimiter#ASCII_delimited_text\nconst encodePayload = (packets, callback) => {\n    // some packets may be added to the array while encoding, so the initial length must be saved\n    const length = packets.length;\n    const encodedPackets = new Array(length);\n    let count = 0;\n    packets.forEach((packet, i) => {\n        // force base64 encoding for binary packets\n        encodePacket(packet, false, encodedPacket => {\n            encodedPackets[i] = encodedPacket;\n            if (++count === length) {\n                callback(encodedPackets.join(SEPARATOR));\n            }\n        });\n    });\n};\nconst decodePayload = (encodedPayload, binaryType) => {\n    const encodedPackets = encodedPayload.split(SEPARATOR);\n    const packets = [];\n    for (let i = 0; i < encodedPackets.length; i++) {\n        const decodedPacket = decodePacket(encodedPackets[i], binaryType);\n        packets.push(decodedPacket);\n        if (decodedPacket.type === \"error\") {\n            break;\n        }\n    }\n    return packets;\n};\nexport const protocol = 4;\nexport { encodePacket, encodePayload, decodePacket, decodePayload };\n","import { decodePacket } from \"engine.io-parser\";\nimport { Emitter } from \"@socket.io/component-emitter\";\nimport { installTimerFunctions } from \"./util.js\";\nexport class Transport extends Emitter {\n    /**\n     * Transport abstract constructor.\n     *\n     * @param {Object} options.\n     * @api private\n     */\n    constructor(opts) {\n        super();\n        this.writable = false;\n        installTimerFunctions(this, opts);\n        this.opts = opts;\n        this.query = opts.query;\n        this.readyState = \"\";\n        this.socket = opts.socket;\n    }\n    /**\n     * Emits an error.\n     *\n     * @param {String} str\n     * @return {Transport} for chaining\n     * @api protected\n     */\n    onError(msg, desc) {\n        const err = new Error(msg);\n        // @ts-ignore\n        err.type = \"TransportError\";\n        // @ts-ignore\n        err.description = desc;\n        super.emit(\"error\", err);\n        return this;\n    }\n    /**\n     * Opens the transport.\n     *\n     * @api public\n     */\n    open() {\n        if (\"closed\" === this.readyState || \"\" === this.readyState) {\n            this.readyState = \"opening\";\n            this.doOpen();\n        }\n        return this;\n    }\n    /**\n     * Closes the transport.\n     *\n     * @api public\n     */\n    close() {\n        if (\"opening\" === this.readyState || \"open\" === this.readyState) {\n            this.doClose();\n            this.onClose();\n        }\n        return this;\n    }\n    /**\n     * Sends multiple packets.\n     *\n     * @param {Array} packets\n     * @api public\n     */\n    send(packets) {\n        if (\"open\" === this.readyState) {\n            this.write(packets);\n        }\n        else {\n            // this might happen if the transport was silently closed in the beforeunload event handler\n        }\n    }\n    /**\n     * Called upon open\n     *\n     * @api protected\n     */\n    onOpen() {\n        this.readyState = \"open\";\n        this.writable = true;\n        super.emit(\"open\");\n    }\n    /**\n     * Called with data.\n     *\n     * @param {String} data\n     * @api protected\n     */\n    onData(data) {\n        const packet = decodePacket(data, this.socket.binaryType);\n        this.onPacket(packet);\n    }\n    /**\n     * Called with a decoded packet.\n     *\n     * @api protected\n     */\n    onPacket(packet) {\n        super.emit(\"packet\", packet);\n    }\n    /**\n     * Called upon close.\n     *\n     * @api protected\n     */\n    onClose() {\n        this.readyState = \"closed\";\n        super.emit(\"close\");\n    }\n}\n","/**\n * Compiles a querystring\n * Returns string representation of the object\n *\n * @param {Object}\n * @api private\n */\n\nexports.encode = function (obj) {\n  var str = '';\n\n  for (var i in obj) {\n    if (obj.hasOwnProperty(i)) {\n      if (str.length) str += '&';\n      str += encodeURIComponent(i) + '=' + encodeURIComponent(obj[i]);\n    }\n  }\n\n  return str;\n};\n\n/**\n * Parses a simple querystring into an object\n *\n * @param {String} qs\n * @api private\n */\n\nexports.decode = function(qs){\n  var qry = {};\n  var pairs = qs.split('&');\n  for (var i = 0, l = pairs.length; i < l; i++) {\n    var pair = pairs[i].split('=');\n    qry[decodeURIComponent(pair[0])] = decodeURIComponent(pair[1]);\n  }\n  return qry;\n};\n","import { Transport } from \"../transport.js\";\nimport yeast from \"yeast\";\nimport parseqs from \"parseqs\";\nimport { encodePayload, decodePayload } from \"engine.io-parser\";\nexport class Polling extends Transport {\n    constructor() {\n        super(...arguments);\n        this.polling = false;\n    }\n    /**\n     * Transport name.\n     */\n    get name() {\n        return \"polling\";\n    }\n    /**\n     * Opens the socket (triggers polling). We write a PING message to determine\n     * when the transport is open.\n     *\n     * @api private\n     */\n    doOpen() {\n        this.poll();\n    }\n    /**\n     * Pauses polling.\n     *\n     * @param {Function} callback upon buffers are flushed and transport is paused\n     * @api private\n     */\n    pause(onPause) {\n        this.readyState = \"pausing\";\n        const pause = () => {\n            this.readyState = \"paused\";\n            onPause();\n        };\n        if (this.polling || !this.writable) {\n            let total = 0;\n            if (this.polling) {\n                total++;\n                this.once(\"pollComplete\", function () {\n                    --total || pause();\n                });\n            }\n            if (!this.writable) {\n                total++;\n                this.once(\"drain\", function () {\n                    --total || pause();\n                });\n            }\n        }\n        else {\n            pause();\n        }\n    }\n    /**\n     * Starts polling cycle.\n     *\n     * @api public\n     */\n    poll() {\n        this.polling = true;\n        this.doPoll();\n        this.emit(\"poll\");\n    }\n    /**\n     * Overloads onData to detect payloads.\n     *\n     * @api private\n     */\n    onData(data) {\n        const callback = packet => {\n            // if its the first message we consider the transport open\n            if (\"opening\" === this.readyState && packet.type === \"open\") {\n                this.onOpen();\n            }\n            // if its a close packet, we close the ongoing requests\n            if (\"close\" === packet.type) {\n                this.onClose();\n                return false;\n            }\n            // otherwise bypass onData and handle the message\n            this.onPacket(packet);\n        };\n        // decode payload\n        decodePayload(data, this.socket.binaryType).forEach(callback);\n        // if an event did not trigger closing\n        if (\"closed\" !== this.readyState) {\n            // if we got data we're not polling\n            this.polling = false;\n            this.emit(\"pollComplete\");\n            if (\"open\" === this.readyState) {\n                this.poll();\n            }\n            else {\n            }\n        }\n    }\n    /**\n     * For polling, send a close packet.\n     *\n     * @api private\n     */\n    doClose() {\n        const close = () => {\n            this.write([{ type: \"close\" }]);\n        };\n        if (\"open\" === this.readyState) {\n            close();\n        }\n        else {\n            // in case we're trying to close while\n            // handshaking is in progress (GH-164)\n            this.once(\"open\", close);\n        }\n    }\n    /**\n     * Writes a packets payload.\n     *\n     * @param {Array} data packets\n     * @param {Function} drain callback\n     * @api private\n     */\n    write(packets) {\n        this.writable = false;\n        encodePayload(packets, data => {\n            this.doWrite(data, () => {\n                this.writable = true;\n                this.emit(\"drain\");\n            });\n        });\n    }\n    /**\n     * Generates uri for connection.\n     *\n     * @api private\n     */\n    uri() {\n        let query = this.query || {};\n        const schema = this.opts.secure ? \"https\" : \"http\";\n        let port = \"\";\n        // cache busting is forced\n        if (false !== this.opts.timestampRequests) {\n            query[this.opts.timestampParam] = yeast();\n        }\n        if (!this.supportsBinary && !query.sid) {\n            query.b64 = 1;\n        }\n        // avoid port if default for schema\n        if (this.opts.port &&\n            ((\"https\" === schema && Number(this.opts.port) !== 443) ||\n                (\"http\" === schema && Number(this.opts.port) !== 80))) {\n            port = \":\" + this.opts.port;\n        }\n        const encodedQuery = parseqs.encode(query);\n        const ipv6 = this.opts.hostname.indexOf(\":\") !== -1;\n        return (schema +\n            \"://\" +\n            (ipv6 ? \"[\" + this.opts.hostname + \"]\" : this.opts.hostname) +\n            port +\n            this.opts.path +\n            (encodedQuery.length ? \"?\" + encodedQuery : \"\"));\n    }\n}\n","/* global attachEvent */\nimport XMLHttpRequest from \"./xmlhttprequest.js\";\nimport globalThis from \"../globalThis.js\";\nimport { installTimerFunctions, pick } from \"../util.js\";\nimport { Emitter } from \"@socket.io/component-emitter\";\nimport { Polling } from \"./polling.js\";\n/**\n * Empty function\n */\nfunction empty() { }\nconst hasXHR2 = (function () {\n    const xhr = new XMLHttpRequest({\n        xdomain: false\n    });\n    return null != xhr.responseType;\n})();\nexport class XHR extends Polling {\n    /**\n     * XHR Polling constructor.\n     *\n     * @param {Object} opts\n     * @api public\n     */\n    constructor(opts) {\n        super(opts);\n        if (typeof location !== \"undefined\") {\n            const isSSL = \"https:\" === location.protocol;\n            let port = location.port;\n            // some user agents have empty `location.port`\n            if (!port) {\n                port = isSSL ? \"443\" : \"80\";\n            }\n            this.xd =\n                (typeof location !== \"undefined\" &&\n                    opts.hostname !== location.hostname) ||\n                    port !== opts.port;\n            this.xs = opts.secure !== isSSL;\n        }\n        /**\n         * XHR supports binary\n         */\n        const forceBase64 = opts && opts.forceBase64;\n        this.supportsBinary = hasXHR2 && !forceBase64;\n    }\n    /**\n     * Creates a request.\n     *\n     * @param {String} method\n     * @api private\n     */\n    request(opts = {}) {\n        Object.assign(opts, { xd: this.xd, xs: this.xs }, this.opts);\n        return new Request(this.uri(), opts);\n    }\n    /**\n     * Sends data.\n     *\n     * @param {String} data to send.\n     * @param {Function} called upon flush.\n     * @api private\n     */\n    doWrite(data, fn) {\n        const req = this.request({\n            method: \"POST\",\n            data: data\n        });\n        req.on(\"success\", fn);\n        req.on(\"error\", err => {\n            this.onError(\"xhr post error\", err);\n        });\n    }\n    /**\n     * Starts a poll cycle.\n     *\n     * @api private\n     */\n    doPoll() {\n        const req = this.request();\n        req.on(\"data\", this.onData.bind(this));\n        req.on(\"error\", err => {\n            this.onError(\"xhr poll error\", err);\n        });\n        this.pollXhr = req;\n    }\n}\nexport class Request extends Emitter {\n    /**\n     * Request constructor\n     *\n     * @param {Object} options\n     * @api public\n     */\n    constructor(uri, opts) {\n        super();\n        installTimerFunctions(this, opts);\n        this.opts = opts;\n        this.method = opts.method || \"GET\";\n        this.uri = uri;\n        this.async = false !== opts.async;\n        this.data = undefined !== opts.data ? opts.data : null;\n        this.create();\n    }\n    /**\n     * Creates the XHR object and sends the request.\n     *\n     * @api private\n     */\n    create() {\n        const opts = pick(this.opts, \"agent\", \"pfx\", \"key\", \"passphrase\", \"cert\", \"ca\", \"ciphers\", \"rejectUnauthorized\", \"autoUnref\");\n        opts.xdomain = !!this.opts.xd;\n        opts.xscheme = !!this.opts.xs;\n        const xhr = (this.xhr = new XMLHttpRequest(opts));\n        try {\n            xhr.open(this.method, this.uri, this.async);\n            try {\n                if (this.opts.extraHeaders) {\n                    xhr.setDisableHeaderCheck && xhr.setDisableHeaderCheck(true);\n                    for (let i in this.opts.extraHeaders) {\n                        if (this.opts.extraHeaders.hasOwnProperty(i)) {\n                            xhr.setRequestHeader(i, this.opts.extraHeaders[i]);\n                        }\n                    }\n                }\n            }\n            catch (e) { }\n            if (\"POST\" === this.method) {\n                try {\n                    xhr.setRequestHeader(\"Content-type\", \"text/plain;charset=UTF-8\");\n                }\n                catch (e) { }\n            }\n            try {\n                xhr.setRequestHeader(\"Accept\", \"*/*\");\n            }\n            catch (e) { }\n            // ie6 check\n            if (\"withCredentials\" in xhr) {\n                xhr.withCredentials = this.opts.withCredentials;\n            }\n            if (this.opts.requestTimeout) {\n                xhr.timeout = this.opts.requestTimeout;\n            }\n            xhr.onreadystatechange = () => {\n                if (4 !== xhr.readyState)\n                    return;\n                if (200 === xhr.status || 1223 === xhr.status) {\n                    this.onLoad();\n                }\n                else {\n                    // make sure the `error` event handler that's user-set\n                    // does not throw in the same tick and gets caught here\n                    this.setTimeoutFn(() => {\n                        this.onError(typeof xhr.status === \"number\" ? xhr.status : 0);\n                    }, 0);\n                }\n            };\n            xhr.send(this.data);\n        }\n        catch (e) {\n            // Need to defer since .create() is called directly from the constructor\n            // and thus the 'error' event can only be only bound *after* this exception\n            // occurs.  Therefore, also, we cannot throw here at all.\n            this.setTimeoutFn(() => {\n                this.onError(e);\n            }, 0);\n            return;\n        }\n        if (typeof document !== \"undefined\") {\n            this.index = Request.requestsCount++;\n            Request.requests[this.index] = this;\n        }\n    }\n    /**\n     * Called upon successful response.\n     *\n     * @api private\n     */\n    onSuccess() {\n        this.emit(\"success\");\n        this.cleanup();\n    }\n    /**\n     * Called if we have data.\n     *\n     * @api private\n     */\n    onData(data) {\n        this.emit(\"data\", data);\n        this.onSuccess();\n    }\n    /**\n     * Called upon error.\n     *\n     * @api private\n     */\n    onError(err) {\n        this.emit(\"error\", err);\n        this.cleanup(true);\n    }\n    /**\n     * Cleans up house.\n     *\n     * @api private\n     */\n    cleanup(fromError) {\n        if (\"undefined\" === typeof this.xhr || null === this.xhr) {\n            return;\n        }\n        this.xhr.onreadystatechange = empty;\n        if (fromError) {\n            try {\n                this.xhr.abort();\n            }\n            catch (e) { }\n        }\n        if (typeof document !== \"undefined\") {\n            delete Request.requests[this.index];\n        }\n        this.xhr = null;\n    }\n    /**\n     * Called upon load.\n     *\n     * @api private\n     */\n    onLoad() {\n        const data = this.xhr.responseText;\n        if (data !== null) {\n            this.onData(data);\n        }\n    }\n    /**\n     * Aborts the request.\n     *\n     * @api public\n     */\n    abort() {\n        this.cleanup();\n    }\n}\nRequest.requestsCount = 0;\nRequest.requests = {};\n/**\n * Aborts pending requests when unloading the window. This is needed to prevent\n * memory leaks (e.g. when using IE) and to ensure that no spurious error is\n * emitted.\n */\nif (typeof document !== \"undefined\") {\n    // @ts-ignore\n    if (typeof attachEvent === \"function\") {\n        // @ts-ignore\n        attachEvent(\"onunload\", unloadHandler);\n    }\n    else if (typeof addEventListener === \"function\") {\n        const terminationEvent = \"onpagehide\" in globalThis ? \"pagehide\" : \"unload\";\n        addEventListener(terminationEvent, unloadHandler, false);\n    }\n}\nfunction unloadHandler() {\n    for (let i in Request.requests) {\n        if (Request.requests.hasOwnProperty(i)) {\n            Request.requests[i].abort();\n        }\n    }\n}\n","import globalThis from \"../globalThis.js\";\nexport const nextTick = (() => {\n    const isPromiseAvailable = typeof Promise === \"function\" && typeof Promise.resolve === \"function\";\n    if (isPromiseAvailable) {\n        return cb => Promise.resolve().then(cb);\n    }\n    else {\n        return (cb, setTimeoutFn) => setTimeoutFn(cb, 0);\n    }\n})();\nexport const WebSocket = globalThis.WebSocket || globalThis.MozWebSocket;\nexport const usingBrowserWebSocket = true;\nexport const defaultBinaryType = \"arraybuffer\";\n","import { Transport } from \"../transport.js\";\nimport parseqs from \"parseqs\";\nimport yeast from \"yeast\";\nimport { pick } from \"../util.js\";\nimport { defaultBinaryType, nextTick, usingBrowserWebSocket, WebSocket } from \"./websocket-constructor.js\";\nimport { encodePacket } from \"engine.io-parser\";\n// detect ReactNative environment\nconst isReactNative = typeof navigator !== \"undefined\" &&\n    typeof navigator.product === \"string\" &&\n    navigator.product.toLowerCase() === \"reactnative\";\nexport class WS extends Transport {\n    /**\n     * WebSocket transport constructor.\n     *\n     * @api {Object} connection options\n     * @api public\n     */\n    constructor(opts) {\n        super(opts);\n        this.supportsBinary = !opts.forceBase64;\n    }\n    /**\n     * Transport name.\n     *\n     * @api public\n     */\n    get name() {\n        return \"websocket\";\n    }\n    /**\n     * Opens socket.\n     *\n     * @api private\n     */\n    doOpen() {\n        if (!this.check()) {\n            // let probe timeout\n            return;\n        }\n        const uri = this.uri();\n        const protocols = this.opts.protocols;\n        // React Native only supports the 'headers' option, and will print a warning if anything else is passed\n        const opts = isReactNative\n            ? {}\n            : pick(this.opts, \"agent\", \"perMessageDeflate\", \"pfx\", \"key\", \"passphrase\", \"cert\", \"ca\", \"ciphers\", \"rejectUnauthorized\", \"localAddress\", \"protocolVersion\", \"origin\", \"maxPayload\", \"family\", \"checkServerIdentity\");\n        if (this.opts.extraHeaders) {\n            opts.headers = this.opts.extraHeaders;\n        }\n        try {\n            this.ws =\n                usingBrowserWebSocket && !isReactNative\n                    ? protocols\n                        ? new WebSocket(uri, protocols)\n                        : new WebSocket(uri)\n                    : new WebSocket(uri, protocols, opts);\n        }\n        catch (err) {\n            return this.emit(\"error\", err);\n        }\n        this.ws.binaryType = this.socket.binaryType || defaultBinaryType;\n        this.addEventListeners();\n    }\n    /**\n     * Adds event listeners to the socket\n     *\n     * @api private\n     */\n    addEventListeners() {\n        this.ws.onopen = () => {\n            if (this.opts.autoUnref) {\n                this.ws._socket.unref();\n            }\n            this.onOpen();\n        };\n        this.ws.onclose = this.onClose.bind(this);\n        this.ws.onmessage = ev => this.onData(ev.data);\n        this.ws.onerror = e => this.onError(\"websocket error\", e);\n    }\n    /**\n     * Writes data to socket.\n     *\n     * @param {Array} array of packets.\n     * @api private\n     */\n    write(packets) {\n        this.writable = false;\n        // encodePacket efficient as it uses WS framing\n        // no need for encodePayload\n        for (let i = 0; i < packets.length; i++) {\n            const packet = packets[i];\n            const lastPacket = i === packets.length - 1;\n            encodePacket(packet, this.supportsBinary, data => {\n                // always create a new object (GH-437)\n                const opts = {};\n                if (!usingBrowserWebSocket) {\n                    if (packet.options) {\n                        opts.compress = packet.options.compress;\n                    }\n                    if (this.opts.perMessageDeflate) {\n                        const len = \"string\" === typeof data ? Buffer.byteLength(data) : data.length;\n                        if (len < this.opts.perMessageDeflate.threshold) {\n                            opts.compress = false;\n                        }\n                    }\n                }\n                // Sometimes the websocket has already been closed but the browser didn't\n                // have a chance of informing us about it yet, in that case send will\n                // throw an error\n                try {\n                    if (usingBrowserWebSocket) {\n                        // TypeError is thrown when passing the second argument on Safari\n                        this.ws.send(data);\n                    }\n                    else {\n                        this.ws.send(data, opts);\n                    }\n                }\n                catch (e) {\n                }\n                if (lastPacket) {\n                    // fake drain\n                    // defer to next tick to allow Socket to clear writeBuffer\n                    nextTick(() => {\n                        this.writable = true;\n                        this.emit(\"drain\");\n                    }, this.setTimeoutFn);\n                }\n            });\n        }\n    }\n    /**\n     * Closes socket.\n     *\n     * @api private\n     */\n    doClose() {\n        if (typeof this.ws !== \"undefined\") {\n            this.ws.close();\n            this.ws = null;\n        }\n    }\n    /**\n     * Generates uri for connection.\n     *\n     * @api private\n     */\n    uri() {\n        let query = this.query || {};\n        const schema = this.opts.secure ? \"wss\" : \"ws\";\n        let port = \"\";\n        // avoid port if default for schema\n        if (this.opts.port &&\n            ((\"wss\" === schema && Number(this.opts.port) !== 443) ||\n                (\"ws\" === schema && Number(this.opts.port) !== 80))) {\n            port = \":\" + this.opts.port;\n        }\n        // append timestamp to URI\n        if (this.opts.timestampRequests) {\n            query[this.opts.timestampParam] = yeast();\n        }\n        // communicate binary support capabilities\n        if (!this.supportsBinary) {\n            query.b64 = 1;\n        }\n        const encodedQuery = parseqs.encode(query);\n        const ipv6 = this.opts.hostname.indexOf(\":\") !== -1;\n        return (schema +\n            \"://\" +\n            (ipv6 ? \"[\" + this.opts.hostname + \"]\" : this.opts.hostname) +\n            port +\n            this.opts.path +\n            (encodedQuery.length ? \"?\" + encodedQuery : \"\"));\n    }\n    /**\n     * Feature detection for WebSocket.\n     *\n     * @return {Boolean} whether this transport is available.\n     * @api public\n     */\n    check() {\n        return (!!WebSocket &&\n            !(\"__initialize\" in WebSocket && this.name === WS.prototype.name));\n    }\n}\n","import { XHR } from \"./polling-xhr.js\";\nimport { WS } from \"./websocket.js\";\nexport const transports = {\n    websocket: WS,\n    polling: XHR\n};\n","import { transports } from \"./transports/index.js\";\nimport { installTimerFunctions } from \"./util.js\";\nimport parseqs from \"parseqs\";\nimport parseuri from \"parseuri\";\nimport { Emitter } from \"@socket.io/component-emitter\";\nimport { protocol } from \"engine.io-parser\";\nexport class Socket extends Emitter {\n    /**\n     * Socket constructor.\n     *\n     * @param {String|Object} uri or options\n     * @param {Object} opts - options\n     * @api public\n     */\n    constructor(uri, opts = {}) {\n        super();\n        if (uri && \"object\" === typeof uri) {\n            opts = uri;\n            uri = null;\n        }\n        if (uri) {\n            uri = parseuri(uri);\n            opts.hostname = uri.host;\n            opts.secure = uri.protocol === \"https\" || uri.protocol === \"wss\";\n            opts.port = uri.port;\n            if (uri.query)\n                opts.query = uri.query;\n        }\n        else if (opts.host) {\n            opts.hostname = parseuri(opts.host).host;\n        }\n        installTimerFunctions(this, opts);\n        this.secure =\n            null != opts.secure\n                ? opts.secure\n                : typeof location !== \"undefined\" && \"https:\" === location.protocol;\n        if (opts.hostname && !opts.port) {\n            // if no port is specified manually, use the protocol default\n            opts.port = this.secure ? \"443\" : \"80\";\n        }\n        this.hostname =\n            opts.hostname ||\n                (typeof location !== \"undefined\" ? location.hostname : \"localhost\");\n        this.port =\n            opts.port ||\n                (typeof location !== \"undefined\" && location.port\n                    ? location.port\n                    : this.secure\n                        ? \"443\"\n                        : \"80\");\n        this.transports = opts.transports || [\"polling\", \"websocket\"];\n        this.readyState = \"\";\n        this.writeBuffer = [];\n        this.prevBufferLen = 0;\n        this.opts = Object.assign({\n            path: \"/engine.io\",\n            agent: false,\n            withCredentials: false,\n            upgrade: true,\n            timestampParam: \"t\",\n            rememberUpgrade: false,\n            rejectUnauthorized: true,\n            perMessageDeflate: {\n                threshold: 1024\n            },\n            transportOptions: {},\n            closeOnBeforeunload: true\n        }, opts);\n        this.opts.path = this.opts.path.replace(/\\/$/, \"\") + \"/\";\n        if (typeof this.opts.query === \"string\") {\n            this.opts.query = parseqs.decode(this.opts.query);\n        }\n        // set on handshake\n        this.id = null;\n        this.upgrades = null;\n        this.pingInterval = null;\n        this.pingTimeout = null;\n        // set on heartbeat\n        this.pingTimeoutTimer = null;\n        if (typeof addEventListener === \"function\") {\n            if (this.opts.closeOnBeforeunload) {\n                // Firefox closes the connection when the \"beforeunload\" event is emitted but not Chrome. This event listener\n                // ensures every browser behaves the same (no \"disconnect\" event at the Socket.IO level when the page is\n                // closed/reloaded)\n                addEventListener(\"beforeunload\", () => {\n                    if (this.transport) {\n                        // silently close the transport\n                        this.transport.removeAllListeners();\n                        this.transport.close();\n                    }\n                }, false);\n            }\n            if (this.hostname !== \"localhost\") {\n                this.offlineEventListener = () => {\n                    this.onClose(\"transport close\");\n                };\n                addEventListener(\"offline\", this.offlineEventListener, false);\n            }\n        }\n        this.open();\n    }\n    /**\n     * Creates transport of the given type.\n     *\n     * @param {String} transport name\n     * @return {Transport}\n     * @api private\n     */\n    createTransport(name) {\n        const query = clone(this.opts.query);\n        // append engine.io protocol identifier\n        query.EIO = protocol;\n        // transport name\n        query.transport = name;\n        // session id if we already have one\n        if (this.id)\n            query.sid = this.id;\n        const opts = Object.assign({}, this.opts.transportOptions[name], this.opts, {\n            query,\n            socket: this,\n            hostname: this.hostname,\n            secure: this.secure,\n            port: this.port\n        });\n        return new transports[name](opts);\n    }\n    /**\n     * Initializes transport to use and starts probe.\n     *\n     * @api private\n     */\n    open() {\n        let transport;\n        if (this.opts.rememberUpgrade &&\n            Socket.priorWebsocketSuccess &&\n            this.transports.indexOf(\"websocket\") !== -1) {\n            transport = \"websocket\";\n        }\n        else if (0 === this.transports.length) {\n            // Emit error on next tick so it can be listened to\n            this.setTimeoutFn(() => {\n                this.emitReserved(\"error\", \"No transports available\");\n            }, 0);\n            return;\n        }\n        else {\n            transport = this.transports[0];\n        }\n        this.readyState = \"opening\";\n        // Retry with the next transport if the transport is disabled (jsonp: false)\n        try {\n            transport = this.createTransport(transport);\n        }\n        catch (e) {\n            this.transports.shift();\n            this.open();\n            return;\n        }\n        transport.open();\n        this.setTransport(transport);\n    }\n    /**\n     * Sets the current transport. Disables the existing one (if any).\n     *\n     * @api private\n     */\n    setTransport(transport) {\n        if (this.transport) {\n            this.transport.removeAllListeners();\n        }\n        // set up transport\n        this.transport = transport;\n        // set up transport listeners\n        transport\n            .on(\"drain\", this.onDrain.bind(this))\n            .on(\"packet\", this.onPacket.bind(this))\n            .on(\"error\", this.onError.bind(this))\n            .on(\"close\", () => {\n            this.onClose(\"transport close\");\n        });\n    }\n    /**\n     * Probes a transport.\n     *\n     * @param {String} transport name\n     * @api private\n     */\n    probe(name) {\n        let transport = this.createTransport(name);\n        let failed = false;\n        Socket.priorWebsocketSuccess = false;\n        const onTransportOpen = () => {\n            if (failed)\n                return;\n            transport.send([{ type: \"ping\", data: \"probe\" }]);\n            transport.once(\"packet\", msg => {\n                if (failed)\n                    return;\n                if (\"pong\" === msg.type && \"probe\" === msg.data) {\n                    this.upgrading = true;\n                    this.emitReserved(\"upgrading\", transport);\n                    if (!transport)\n                        return;\n                    Socket.priorWebsocketSuccess = \"websocket\" === transport.name;\n                    this.transport.pause(() => {\n                        if (failed)\n                            return;\n                        if (\"closed\" === this.readyState)\n                            return;\n                        cleanup();\n                        this.setTransport(transport);\n                        transport.send([{ type: \"upgrade\" }]);\n                        this.emitReserved(\"upgrade\", transport);\n                        transport = null;\n                        this.upgrading = false;\n                        this.flush();\n                    });\n                }\n                else {\n                    const err = new Error(\"probe error\");\n                    // @ts-ignore\n                    err.transport = transport.name;\n                    this.emitReserved(\"upgradeError\", err);\n                }\n            });\n        };\n        function freezeTransport() {\n            if (failed)\n                return;\n            // Any callback called by transport should be ignored since now\n            failed = true;\n            cleanup();\n            transport.close();\n            transport = null;\n        }\n        // Handle any error that happens while probing\n        const onerror = err => {\n            const error = new Error(\"probe error: \" + err);\n            // @ts-ignore\n            error.transport = transport.name;\n            freezeTransport();\n            this.emitReserved(\"upgradeError\", error);\n        };\n        function onTransportClose() {\n            onerror(\"transport closed\");\n        }\n        // When the socket is closed while we're probing\n        function onclose() {\n            onerror(\"socket closed\");\n        }\n        // When the socket is upgraded while we're probing\n        function onupgrade(to) {\n            if (transport && to.name !== transport.name) {\n                freezeTransport();\n            }\n        }\n        // Remove all listeners on the transport and on self\n        const cleanup = () => {\n            transport.removeListener(\"open\", onTransportOpen);\n            transport.removeListener(\"error\", onerror);\n            transport.removeListener(\"close\", onTransportClose);\n            this.off(\"close\", onclose);\n            this.off(\"upgrading\", onupgrade);\n        };\n        transport.once(\"open\", onTransportOpen);\n        transport.once(\"error\", onerror);\n        transport.once(\"close\", onTransportClose);\n        this.once(\"close\", onclose);\n        this.once(\"upgrading\", onupgrade);\n        transport.open();\n    }\n    /**\n     * Called when connection is deemed open.\n     *\n     * @api private\n     */\n    onOpen() {\n        this.readyState = \"open\";\n        Socket.priorWebsocketSuccess = \"websocket\" === this.transport.name;\n        this.emitReserved(\"open\");\n        this.flush();\n        // we check for `readyState` in case an `open`\n        // listener already closed the socket\n        if (\"open\" === this.readyState &&\n            this.opts.upgrade &&\n            this.transport.pause) {\n            let i = 0;\n            const l = this.upgrades.length;\n            for (; i < l; i++) {\n                this.probe(this.upgrades[i]);\n            }\n        }\n    }\n    /**\n     * Handles a packet.\n     *\n     * @api private\n     */\n    onPacket(packet) {\n        if (\"opening\" === this.readyState ||\n            \"open\" === this.readyState ||\n            \"closing\" === this.readyState) {\n            this.emitReserved(\"packet\", packet);\n            // Socket is live - any packet counts\n            this.emitReserved(\"heartbeat\");\n            switch (packet.type) {\n                case \"open\":\n                    this.onHandshake(JSON.parse(packet.data));\n                    break;\n                case \"ping\":\n                    this.resetPingTimeout();\n                    this.sendPacket(\"pong\");\n                    this.emitReserved(\"ping\");\n                    this.emitReserved(\"pong\");\n                    break;\n                case \"error\":\n                    const err = new Error(\"server error\");\n                    // @ts-ignore\n                    err.code = packet.data;\n                    this.onError(err);\n                    break;\n                case \"message\":\n                    this.emitReserved(\"data\", packet.data);\n                    this.emitReserved(\"message\", packet.data);\n                    break;\n            }\n        }\n        else {\n        }\n    }\n    /**\n     * Called upon handshake completion.\n     *\n     * @param {Object} data - handshake obj\n     * @api private\n     */\n    onHandshake(data) {\n        this.emitReserved(\"handshake\", data);\n        this.id = data.sid;\n        this.transport.query.sid = data.sid;\n        this.upgrades = this.filterUpgrades(data.upgrades);\n        this.pingInterval = data.pingInterval;\n        this.pingTimeout = data.pingTimeout;\n        this.onOpen();\n        // In case open handler closes socket\n        if (\"closed\" === this.readyState)\n            return;\n        this.resetPingTimeout();\n    }\n    /**\n     * Sets and resets ping timeout timer based on server pings.\n     *\n     * @api private\n     */\n    resetPingTimeout() {\n        this.clearTimeoutFn(this.pingTimeoutTimer);\n        this.pingTimeoutTimer = this.setTimeoutFn(() => {\n            this.onClose(\"ping timeout\");\n        }, this.pingInterval + this.pingTimeout);\n        if (this.opts.autoUnref) {\n            this.pingTimeoutTimer.unref();\n        }\n    }\n    /**\n     * Called on `drain` event\n     *\n     * @api private\n     */\n    onDrain() {\n        this.writeBuffer.splice(0, this.prevBufferLen);\n        // setting prevBufferLen = 0 is very important\n        // for example, when upgrading, upgrade packet is sent over,\n        // and a nonzero prevBufferLen could cause problems on `drain`\n        this.prevBufferLen = 0;\n        if (0 === this.writeBuffer.length) {\n            this.emitReserved(\"drain\");\n        }\n        else {\n            this.flush();\n        }\n    }\n    /**\n     * Flush write buffers.\n     *\n     * @api private\n     */\n    flush() {\n        if (\"closed\" !== this.readyState &&\n            this.transport.writable &&\n            !this.upgrading &&\n            this.writeBuffer.length) {\n            this.transport.send(this.writeBuffer);\n            // keep track of current length of writeBuffer\n            // splice writeBuffer and callbackBuffer on `drain`\n            this.prevBufferLen = this.writeBuffer.length;\n            this.emitReserved(\"flush\");\n        }\n    }\n    /**\n     * Sends a message.\n     *\n     * @param {String} message.\n     * @param {Function} callback function.\n     * @param {Object} options.\n     * @return {Socket} for chaining.\n     * @api public\n     */\n    write(msg, options, fn) {\n        this.sendPacket(\"message\", msg, options, fn);\n        return this;\n    }\n    send(msg, options, fn) {\n        this.sendPacket(\"message\", msg, options, fn);\n        return this;\n    }\n    /**\n     * Sends a packet.\n     *\n     * @param {String} packet type.\n     * @param {String} data.\n     * @param {Object} options.\n     * @param {Function} callback function.\n     * @api private\n     */\n    sendPacket(type, data, options, fn) {\n        if (\"function\" === typeof data) {\n            fn = data;\n            data = undefined;\n        }\n        if (\"function\" === typeof options) {\n            fn = options;\n            options = null;\n        }\n        if (\"closing\" === this.readyState || \"closed\" === this.readyState) {\n            return;\n        }\n        options = options || {};\n        options.compress = false !== options.compress;\n        const packet = {\n            type: type,\n            data: data,\n            options: options\n        };\n        this.emitReserved(\"packetCreate\", packet);\n        this.writeBuffer.push(packet);\n        if (fn)\n            this.once(\"flush\", fn);\n        this.flush();\n    }\n    /**\n     * Closes the connection.\n     *\n     * @api public\n     */\n    close() {\n        const close = () => {\n            this.onClose(\"forced close\");\n            this.transport.close();\n        };\n        const cleanupAndClose = () => {\n            this.off(\"upgrade\", cleanupAndClose);\n            this.off(\"upgradeError\", cleanupAndClose);\n            close();\n        };\n        const waitForUpgrade = () => {\n            // wait for upgrade to finish since we can't send packets while pausing a transport\n            this.once(\"upgrade\", cleanupAndClose);\n            this.once(\"upgradeError\", cleanupAndClose);\n        };\n        if (\"opening\" === this.readyState || \"open\" === this.readyState) {\n            this.readyState = \"closing\";\n            if (this.writeBuffer.length) {\n                this.once(\"drain\", () => {\n                    if (this.upgrading) {\n                        waitForUpgrade();\n                    }\n                    else {\n                        close();\n                    }\n                });\n            }\n            else if (this.upgrading) {\n                waitForUpgrade();\n            }\n            else {\n                close();\n            }\n        }\n        return this;\n    }\n    /**\n     * Called upon transport error\n     *\n     * @api private\n     */\n    onError(err) {\n        Socket.priorWebsocketSuccess = false;\n        this.emitReserved(\"error\", err);\n        this.onClose(\"transport error\", err);\n    }\n    /**\n     * Called upon transport close.\n     *\n     * @api private\n     */\n    onClose(reason, desc) {\n        if (\"opening\" === this.readyState ||\n            \"open\" === this.readyState ||\n            \"closing\" === this.readyState) {\n            // clear timers\n            this.clearTimeoutFn(this.pingTimeoutTimer);\n            // stop event from firing again for transport\n            this.transport.removeAllListeners(\"close\");\n            // ensure transport won't stay open\n            this.transport.close();\n            // ignore further transport communication\n            this.transport.removeAllListeners();\n            if (typeof removeEventListener === \"function\") {\n                removeEventListener(\"offline\", this.offlineEventListener, false);\n            }\n            // set ready state\n            this.readyState = \"closed\";\n            // clear session id\n            this.id = null;\n            // emit close event\n            this.emitReserved(\"close\", reason, desc);\n            // clean buffers after, so users can still\n            // grab the buffers on `close` event\n            this.writeBuffer = [];\n            this.prevBufferLen = 0;\n        }\n    }\n    /**\n     * Filters upgrades, returning only those matching client transports.\n     *\n     * @param {Array} server upgrades\n     * @api private\n     *\n     */\n    filterUpgrades(upgrades) {\n        const filteredUpgrades = [];\n        let i = 0;\n        const j = upgrades.length;\n        for (; i < j; i++) {\n            if (~this.transports.indexOf(upgrades[i]))\n                filteredUpgrades.push(upgrades[i]);\n        }\n        return filteredUpgrades;\n    }\n}\nSocket.protocol = protocol;\nfunction clone(obj) {\n    const o = {};\n    for (let i in obj) {\n        if (obj.hasOwnProperty(i)) {\n            o[i] = obj[i];\n        }\n    }\n    return o;\n}\n","const withNativeArrayBuffer = typeof ArrayBuffer === \"function\";\nconst isView = (obj) => {\n    return typeof ArrayBuffer.isView === \"function\"\n        ? ArrayBuffer.isView(obj)\n        : obj.buffer instanceof ArrayBuffer;\n};\nconst toString = Object.prototype.toString;\nconst withNativeBlob = typeof Blob === \"function\" ||\n    (typeof Blob !== \"undefined\" &&\n        toString.call(Blob) === \"[object BlobConstructor]\");\nconst withNativeFile = typeof File === \"function\" ||\n    (typeof File !== \"undefined\" &&\n        toString.call(File) === \"[object FileConstructor]\");\n/**\n * Returns true if obj is a Buffer, an ArrayBuffer, a Blob or a File.\n *\n * @private\n */\nexport function isBinary(obj) {\n    return ((withNativeArrayBuffer && (obj instanceof ArrayBuffer || isView(obj))) ||\n        (withNativeBlob && obj instanceof Blob) ||\n        (withNativeFile && obj instanceof File));\n}\nexport function hasBinary(obj, toJSON) {\n    if (!obj || typeof obj !== \"object\") {\n        return false;\n    }\n    if (Array.isArray(obj)) {\n        for (let i = 0, l = obj.length; i < l; i++) {\n            if (hasBinary(obj[i])) {\n                return true;\n            }\n        }\n        return false;\n    }\n    if (isBinary(obj)) {\n        return true;\n    }\n    if (obj.toJSON &&\n        typeof obj.toJSON === \"function\" &&\n        arguments.length === 1) {\n        return hasBinary(obj.toJSON(), true);\n    }\n    for (const key in obj) {\n        if (Object.prototype.hasOwnProperty.call(obj, key) && hasBinary(obj[key])) {\n            return true;\n        }\n    }\n    return false;\n}\n","import { isBinary } from \"./is-binary.js\";\n/**\n * Replaces every Buffer | ArrayBuffer | Blob | File in packet with a numbered placeholder.\n *\n * @param {Object} packet - socket.io event packet\n * @return {Object} with deconstructed packet and list of buffers\n * @public\n */\nexport function deconstructPacket(packet) {\n    const buffers = [];\n    const packetData = packet.data;\n    const pack = packet;\n    pack.data = _deconstructPacket(packetData, buffers);\n    pack.attachments = buffers.length; // number of binary 'attachments'\n    return { packet: pack, buffers: buffers };\n}\nfunction _deconstructPacket(data, buffers) {\n    if (!data)\n        return data;\n    if (isBinary(data)) {\n        const placeholder = { _placeholder: true, num: buffers.length };\n        buffers.push(data);\n        return placeholder;\n    }\n    else if (Array.isArray(data)) {\n        const newData = new Array(data.length);\n        for (let i = 0; i < data.length; i++) {\n            newData[i] = _deconstructPacket(data[i], buffers);\n        }\n        return newData;\n    }\n    else if (typeof data === \"object\" && !(data instanceof Date)) {\n        const newData = {};\n        for (const key in data) {\n            if (data.hasOwnProperty(key)) {\n                newData[key] = _deconstructPacket(data[key], buffers);\n            }\n        }\n        return newData;\n    }\n    return data;\n}\n/**\n * Reconstructs a binary packet from its placeholder packet and buffers\n *\n * @param {Object} packet - event packet with placeholders\n * @param {Array} buffers - binary buffers to put in placeholder positions\n * @return {Object} reconstructed packet\n * @public\n */\nexport function reconstructPacket(packet, buffers) {\n    packet.data = _reconstructPacket(packet.data, buffers);\n    packet.attachments = undefined; // no longer useful\n    return packet;\n}\nfunction _reconstructPacket(data, buffers) {\n    if (!data)\n        return data;\n    if (data && data._placeholder) {\n        return buffers[data.num]; // appropriate buffer (should be natural order anyway)\n    }\n    else if (Array.isArray(data)) {\n        for (let i = 0; i < data.length; i++) {\n            data[i] = _reconstructPacket(data[i], buffers);\n        }\n    }\n    else if (typeof data === \"object\") {\n        for (const key in data) {\n            if (data.hasOwnProperty(key)) {\n                data[key] = _reconstructPacket(data[key], buffers);\n            }\n        }\n    }\n    return data;\n}\n","import { Emitter } from \"@socket.io/component-emitter\";\nimport { deconstructPacket, reconstructPacket } from \"./binary.js\";\nimport { isBinary, hasBinary } from \"./is-binary.js\";\n/**\n * Protocol version.\n *\n * @public\n */\nexport const protocol = 5;\nexport var PacketType;\n(function (PacketType) {\n    PacketType[PacketType[\"CONNECT\"] = 0] = \"CONNECT\";\n    PacketType[PacketType[\"DISCONNECT\"] = 1] = \"DISCONNECT\";\n    PacketType[PacketType[\"EVENT\"] = 2] = \"EVENT\";\n    PacketType[PacketType[\"ACK\"] = 3] = \"ACK\";\n    PacketType[PacketType[\"CONNECT_ERROR\"] = 4] = \"CONNECT_ERROR\";\n    PacketType[PacketType[\"BINARY_EVENT\"] = 5] = \"BINARY_EVENT\";\n    PacketType[PacketType[\"BINARY_ACK\"] = 6] = \"BINARY_ACK\";\n})(PacketType || (PacketType = {}));\n/**\n * A socket.io Encoder instance\n */\nexport class Encoder {\n    /**\n     * Encode a packet as a single string if non-binary, or as a\n     * buffer sequence, depending on packet type.\n     *\n     * @param {Object} obj - packet object\n     */\n    encode(obj) {\n        if (obj.type === PacketType.EVENT || obj.type === PacketType.ACK) {\n            if (hasBinary(obj)) {\n                obj.type =\n                    obj.type === PacketType.EVENT\n                        ? PacketType.BINARY_EVENT\n                        : PacketType.BINARY_ACK;\n                return this.encodeAsBinary(obj);\n            }\n        }\n        return [this.encodeAsString(obj)];\n    }\n    /**\n     * Encode packet as string.\n     */\n    encodeAsString(obj) {\n        // first is type\n        let str = \"\" + obj.type;\n        // attachments if we have them\n        if (obj.type === PacketType.BINARY_EVENT ||\n            obj.type === PacketType.BINARY_ACK) {\n            str += obj.attachments + \"-\";\n        }\n        // if we have a namespace other than `/`\n        // we append it followed by a comma `,`\n        if (obj.nsp && \"/\" !== obj.nsp) {\n            str += obj.nsp + \",\";\n        }\n        // immediately followed by the id\n        if (null != obj.id) {\n            str += obj.id;\n        }\n        // json data\n        if (null != obj.data) {\n            str += JSON.stringify(obj.data);\n        }\n        return str;\n    }\n    /**\n     * Encode packet as 'buffer sequence' by removing blobs, and\n     * deconstructing packet into object with placeholders and\n     * a list of buffers.\n     */\n    encodeAsBinary(obj) {\n        const deconstruction = deconstructPacket(obj);\n        const pack = this.encodeAsString(deconstruction.packet);\n        const buffers = deconstruction.buffers;\n        buffers.unshift(pack); // add packet info to beginning of data list\n        return buffers; // write all the buffers\n    }\n}\n/**\n * A socket.io Decoder instance\n *\n * @return {Object} decoder\n */\nexport class Decoder extends Emitter {\n    constructor() {\n        super();\n    }\n    /**\n     * Decodes an encoded packet string into packet JSON.\n     *\n     * @param {String} obj - encoded packet\n     */\n    add(obj) {\n        let packet;\n        if (typeof obj === \"string\") {\n            packet = this.decodeString(obj);\n            if (packet.type === PacketType.BINARY_EVENT ||\n                packet.type === PacketType.BINARY_ACK) {\n                // binary packet's json\n                this.reconstructor = new BinaryReconstructor(packet);\n                // no attachments, labeled binary but no binary data to follow\n                if (packet.attachments === 0) {\n                    super.emitReserved(\"decoded\", packet);\n                }\n            }\n            else {\n                // non-binary full packet\n                super.emitReserved(\"decoded\", packet);\n            }\n        }\n        else if (isBinary(obj) || obj.base64) {\n            // raw binary data\n            if (!this.reconstructor) {\n                throw new Error(\"got binary data when not reconstructing a packet\");\n            }\n            else {\n                packet = this.reconstructor.takeBinaryData(obj);\n                if (packet) {\n                    // received final buffer\n                    this.reconstructor = null;\n                    super.emitReserved(\"decoded\", packet);\n                }\n            }\n        }\n        else {\n            throw new Error(\"Unknown type: \" + obj);\n        }\n    }\n    /**\n     * Decode a packet String (JSON data)\n     *\n     * @param {String} str\n     * @return {Object} packet\n     */\n    decodeString(str) {\n        let i = 0;\n        // look up type\n        const p = {\n            type: Number(str.charAt(0)),\n        };\n        if (PacketType[p.type] === undefined) {\n            throw new Error(\"unknown packet type \" + p.type);\n        }\n        // look up attachments if type binary\n        if (p.type === PacketType.BINARY_EVENT ||\n            p.type === PacketType.BINARY_ACK) {\n            const start = i + 1;\n            while (str.charAt(++i) !== \"-\" && i != str.length) { }\n            const buf = str.substring(start, i);\n            if (buf != Number(buf) || str.charAt(i) !== \"-\") {\n                throw new Error(\"Illegal attachments\");\n            }\n            p.attachments = Number(buf);\n        }\n        // look up namespace (if any)\n        if (\"/\" === str.charAt(i + 1)) {\n            const start = i + 1;\n            while (++i) {\n                const c = str.charAt(i);\n                if (\",\" === c)\n                    break;\n                if (i === str.length)\n                    break;\n            }\n            p.nsp = str.substring(start, i);\n        }\n        else {\n            p.nsp = \"/\";\n        }\n        // look up id\n        const next = str.charAt(i + 1);\n        if (\"\" !== next && Number(next) == next) {\n            const start = i + 1;\n            while (++i) {\n                const c = str.charAt(i);\n                if (null == c || Number(c) != c) {\n                    --i;\n                    break;\n                }\n                if (i === str.length)\n                    break;\n            }\n            p.id = Number(str.substring(start, i + 1));\n        }\n        // look up json data\n        if (str.charAt(++i)) {\n            const payload = tryParse(str.substr(i));\n            if (Decoder.isPayloadValid(p.type, payload)) {\n                p.data = payload;\n            }\n            else {\n                throw new Error(\"invalid payload\");\n            }\n        }\n        return p;\n    }\n    static isPayloadValid(type, payload) {\n        switch (type) {\n            case PacketType.CONNECT:\n                return typeof payload === \"object\";\n            case PacketType.DISCONNECT:\n                return payload === undefined;\n            case PacketType.CONNECT_ERROR:\n                return typeof payload === \"string\" || typeof payload === \"object\";\n            case PacketType.EVENT:\n            case PacketType.BINARY_EVENT:\n                return Array.isArray(payload) && payload.length > 0;\n            case PacketType.ACK:\n            case PacketType.BINARY_ACK:\n                return Array.isArray(payload);\n        }\n    }\n    /**\n     * Deallocates a parser's resources\n     */\n    destroy() {\n        if (this.reconstructor) {\n            this.reconstructor.finishedReconstruction();\n        }\n    }\n}\nfunction tryParse(str) {\n    try {\n        return JSON.parse(str);\n    }\n    catch (e) {\n        return false;\n    }\n}\n/**\n * A manager of a binary event's 'buffer sequence'. Should\n * be constructed whenever a packet of type BINARY_EVENT is\n * decoded.\n *\n * @param {Object} packet\n * @return {BinaryReconstructor} initialized reconstructor\n */\nclass BinaryReconstructor {\n    constructor(packet) {\n        this.packet = packet;\n        this.buffers = [];\n        this.reconPack = packet;\n    }\n    /**\n     * Method to be called when binary data received from connection\n     * after a BINARY_EVENT packet.\n     *\n     * @param {Buffer | ArrayBuffer} binData - the raw binary data received\n     * @return {null | Object} returns null if more binary data is expected or\n     *   a reconstructed packet object if all buffers have been received.\n     */\n    takeBinaryData(binData) {\n        this.buffers.push(binData);\n        if (this.buffers.length === this.reconPack.attachments) {\n            // done with buffer list\n            const packet = reconstructPacket(this.reconPack, this.buffers);\n            this.finishedReconstruction();\n            return packet;\n        }\n        return null;\n    }\n    /**\n     * Cleans up binary packet reconstruction variables.\n     */\n    finishedReconstruction() {\n        this.reconPack = null;\n        this.buffers = [];\n    }\n}\n","export function on(obj, ev, fn) {\n    obj.on(ev, fn);\n    return function subDestroy() {\n        obj.off(ev, fn);\n    };\n}\n","import { PacketType } from \"socket.io-parser\";\nimport { on } from \"./on.js\";\nimport { Emitter, } from \"@socket.io/component-emitter\";\n/**\n * Internal events.\n * These events can't be emitted by the user.\n */\nconst RESERVED_EVENTS = Object.freeze({\n    connect: 1,\n    connect_error: 1,\n    disconnect: 1,\n    disconnecting: 1,\n    // EventEmitter reserved events: https://nodejs.org/api/events.html#events_event_newlistener\n    newListener: 1,\n    removeListener: 1,\n});\nexport class Socket extends Emitter {\n    /**\n     * `Socket` constructor.\n     *\n     * @public\n     */\n    constructor(io, nsp, opts) {\n        super();\n        this.connected = false;\n        this.disconnected = true;\n        this.receiveBuffer = [];\n        this.sendBuffer = [];\n        this.ids = 0;\n        this.acks = {};\n        this.flags = {};\n        this.io = io;\n        this.nsp = nsp;\n        if (opts && opts.auth) {\n            this.auth = opts.auth;\n        }\n        if (this.io._autoConnect)\n            this.open();\n    }\n    /**\n     * Subscribe to open, close and packet events\n     *\n     * @private\n     */\n    subEvents() {\n        if (this.subs)\n            return;\n        const io = this.io;\n        this.subs = [\n            on(io, \"open\", this.onopen.bind(this)),\n            on(io, \"packet\", this.onpacket.bind(this)),\n            on(io, \"error\", this.onerror.bind(this)),\n            on(io, \"close\", this.onclose.bind(this)),\n        ];\n    }\n    /**\n     * Whether the Socket will try to reconnect when its Manager connects or reconnects\n     */\n    get active() {\n        return !!this.subs;\n    }\n    /**\n     * \"Opens\" the socket.\n     *\n     * @public\n     */\n    connect() {\n        if (this.connected)\n            return this;\n        this.subEvents();\n        if (!this.io[\"_reconnecting\"])\n            this.io.open(); // ensure open\n        if (\"open\" === this.io._readyState)\n            this.onopen();\n        return this;\n    }\n    /**\n     * Alias for connect()\n     */\n    open() {\n        return this.connect();\n    }\n    /**\n     * Sends a `message` event.\n     *\n     * @return self\n     * @public\n     */\n    send(...args) {\n        args.unshift(\"message\");\n        this.emit.apply(this, args);\n        return this;\n    }\n    /**\n     * Override `emit`.\n     * If the event is in `events`, it's emitted normally.\n     *\n     * @return self\n     * @public\n     */\n    emit(ev, ...args) {\n        if (RESERVED_EVENTS.hasOwnProperty(ev)) {\n            throw new Error('\"' + ev + '\" is a reserved event name');\n        }\n        args.unshift(ev);\n        const packet = {\n            type: PacketType.EVENT,\n            data: args,\n        };\n        packet.options = {};\n        packet.options.compress = this.flags.compress !== false;\n        // event ack callback\n        if (\"function\" === typeof args[args.length - 1]) {\n            const id = this.ids++;\n            const ack = args.pop();\n            this._registerAckCallback(id, ack);\n            packet.id = id;\n        }\n        const isTransportWritable = this.io.engine &&\n            this.io.engine.transport &&\n            this.io.engine.transport.writable;\n        const discardPacket = this.flags.volatile && (!isTransportWritable || !this.connected);\n        if (discardPacket) {\n        }\n        else if (this.connected) {\n            this.packet(packet);\n        }\n        else {\n            this.sendBuffer.push(packet);\n        }\n        this.flags = {};\n        return this;\n    }\n    /**\n     * @private\n     */\n    _registerAckCallback(id, ack) {\n        const timeout = this.flags.timeout;\n        if (timeout === undefined) {\n            this.acks[id] = ack;\n            return;\n        }\n        // @ts-ignore\n        const timer = this.io.setTimeoutFn(() => {\n            delete this.acks[id];\n            for (let i = 0; i < this.sendBuffer.length; i++) {\n                if (this.sendBuffer[i].id === id) {\n                    this.sendBuffer.splice(i, 1);\n                }\n            }\n            ack.call(this, new Error(\"operation has timed out\"));\n        }, timeout);\n        this.acks[id] = (...args) => {\n            // @ts-ignore\n            this.io.clearTimeoutFn(timer);\n            ack.apply(this, [null, ...args]);\n        };\n    }\n    /**\n     * Sends a packet.\n     *\n     * @param packet\n     * @private\n     */\n    packet(packet) {\n        packet.nsp = this.nsp;\n        this.io._packet(packet);\n    }\n    /**\n     * Called upon engine `open`.\n     *\n     * @private\n     */\n    onopen() {\n        if (typeof this.auth == \"function\") {\n            this.auth((data) => {\n                this.packet({ type: PacketType.CONNECT, data });\n            });\n        }\n        else {\n            this.packet({ type: PacketType.CONNECT, data: this.auth });\n        }\n    }\n    /**\n     * Called upon engine or manager `error`.\n     *\n     * @param err\n     * @private\n     */\n    onerror(err) {\n        if (!this.connected) {\n            this.emitReserved(\"connect_error\", err);\n        }\n    }\n    /**\n     * Called upon engine `close`.\n     *\n     * @param reason\n     * @private\n     */\n    onclose(reason) {\n        this.connected = false;\n        this.disconnected = true;\n        delete this.id;\n        this.emitReserved(\"disconnect\", reason);\n    }\n    /**\n     * Called with socket packet.\n     *\n     * @param packet\n     * @private\n     */\n    onpacket(packet) {\n        const sameNamespace = packet.nsp === this.nsp;\n        if (!sameNamespace)\n            return;\n        switch (packet.type) {\n            case PacketType.CONNECT:\n                if (packet.data && packet.data.sid) {\n                    const id = packet.data.sid;\n                    this.onconnect(id);\n                }\n                else {\n                    this.emitReserved(\"connect_error\", new Error(\"It seems you are trying to reach a Socket.IO server in v2.x with a v3.x client, but they are not compatible (more information here: https://socket.io/docs/v3/migrating-from-2-x-to-3-0/)\"));\n                }\n                break;\n            case PacketType.EVENT:\n                this.onevent(packet);\n                break;\n            case PacketType.BINARY_EVENT:\n                this.onevent(packet);\n                break;\n            case PacketType.ACK:\n                this.onack(packet);\n                break;\n            case PacketType.BINARY_ACK:\n                this.onack(packet);\n                break;\n            case PacketType.DISCONNECT:\n                this.ondisconnect();\n                break;\n            case PacketType.CONNECT_ERROR:\n                this.destroy();\n                const err = new Error(packet.data.message);\n                // @ts-ignore\n                err.data = packet.data.data;\n                this.emitReserved(\"connect_error\", err);\n                break;\n        }\n    }\n    /**\n     * Called upon a server event.\n     *\n     * @param packet\n     * @private\n     */\n    onevent(packet) {\n        const args = packet.data || [];\n        if (null != packet.id) {\n            args.push(this.ack(packet.id));\n        }\n        if (this.connected) {\n            this.emitEvent(args);\n        }\n        else {\n            this.receiveBuffer.push(Object.freeze(args));\n        }\n    }\n    emitEvent(args) {\n        if (this._anyListeners && this._anyListeners.length) {\n            const listeners = this._anyListeners.slice();\n            for (const listener of listeners) {\n                listener.apply(this, args);\n            }\n        }\n        super.emit.apply(this, args);\n    }\n    /**\n     * Produces an ack callback to emit with an event.\n     *\n     * @private\n     */\n    ack(id) {\n        const self = this;\n        let sent = false;\n        return function (...args) {\n            // prevent double callbacks\n            if (sent)\n                return;\n            sent = true;\n            self.packet({\n                type: PacketType.ACK,\n                id: id,\n                data: args,\n            });\n        };\n    }\n    /**\n     * Called upon a server acknowlegement.\n     *\n     * @param packet\n     * @private\n     */\n    onack(packet) {\n        const ack = this.acks[packet.id];\n        if (\"function\" === typeof ack) {\n            ack.apply(this, packet.data);\n            delete this.acks[packet.id];\n        }\n        else {\n        }\n    }\n    /**\n     * Called upon server connect.\n     *\n     * @private\n     */\n    onconnect(id) {\n        this.id = id;\n        this.connected = true;\n        this.disconnected = false;\n        this.emitBuffered();\n        this.emitReserved(\"connect\");\n    }\n    /**\n     * Emit buffered events (received and emitted).\n     *\n     * @private\n     */\n    emitBuffered() {\n        this.receiveBuffer.forEach((args) => this.emitEvent(args));\n        this.receiveBuffer = [];\n        this.sendBuffer.forEach((packet) => this.packet(packet));\n        this.sendBuffer = [];\n    }\n    /**\n     * Called upon server disconnect.\n     *\n     * @private\n     */\n    ondisconnect() {\n        this.destroy();\n        this.onclose(\"io server disconnect\");\n    }\n    /**\n     * Called upon forced client/server side disconnections,\n     * this method ensures the manager stops tracking us and\n     * that reconnections don't get triggered for this.\n     *\n     * @private\n     */\n    destroy() {\n        if (this.subs) {\n            // clean subscriptions to avoid reconnections\n            this.subs.forEach((subDestroy) => subDestroy());\n            this.subs = undefined;\n        }\n        this.io[\"_destroy\"](this);\n    }\n    /**\n     * Disconnects the socket manually.\n     *\n     * @return self\n     * @public\n     */\n    disconnect() {\n        if (this.connected) {\n            this.packet({ type: PacketType.DISCONNECT });\n        }\n        // remove socket from pool\n        this.destroy();\n        if (this.connected) {\n            // fire events\n            this.onclose(\"io client disconnect\");\n        }\n        return this;\n    }\n    /**\n     * Alias for disconnect()\n     *\n     * @return self\n     * @public\n     */\n    close() {\n        return this.disconnect();\n    }\n    /**\n     * Sets the compress flag.\n     *\n     * @param compress - if `true`, compresses the sending data\n     * @return self\n     * @public\n     */\n    compress(compress) {\n        this.flags.compress = compress;\n        return this;\n    }\n    /**\n     * Sets a modifier for a subsequent event emission that the event message will be dropped when this socket is not\n     * ready to send messages.\n     *\n     * @returns self\n     * @public\n     */\n    get volatile() {\n        this.flags.volatile = true;\n        return this;\n    }\n    /**\n     * Sets a modifier for a subsequent event emission that the callback will be called with an error when the\n     * given number of milliseconds have elapsed without an acknowledgement from the server:\n     *\n     * ```\n     * socket.timeout(5000).emit(\"my-event\", (err) => {\n     *   if (err) {\n     *     // the server did not acknowledge the event in the given delay\n     *   }\n     * });\n     * ```\n     *\n     * @returns self\n     * @public\n     */\n    timeout(timeout) {\n        this.flags.timeout = timeout;\n        return this;\n    }\n    /**\n     * Adds a listener that will be fired when any event is emitted. The event name is passed as the first argument to the\n     * callback.\n     *\n     * @param listener\n     * @public\n     */\n    onAny(listener) {\n        this._anyListeners = this._anyListeners || [];\n        this._anyListeners.push(listener);\n        return this;\n    }\n    /**\n     * Adds a listener that will be fired when any event is emitted. The event name is passed as the first argument to the\n     * callback. The listener is added to the beginning of the listeners array.\n     *\n     * @param listener\n     * @public\n     */\n    prependAny(listener) {\n        this._anyListeners = this._anyListeners || [];\n        this._anyListeners.unshift(listener);\n        return this;\n    }\n    /**\n     * Removes the listener that will be fired when any event is emitted.\n     *\n     * @param listener\n     * @public\n     */\n    offAny(listener) {\n        if (!this._anyListeners) {\n            return this;\n        }\n        if (listener) {\n            const listeners = this._anyListeners;\n            for (let i = 0; i < listeners.length; i++) {\n                if (listener === listeners[i]) {\n                    listeners.splice(i, 1);\n                    return this;\n                }\n            }\n        }\n        else {\n            this._anyListeners = [];\n        }\n        return this;\n    }\n    /**\n     * Returns an array of listeners that are listening for any event that is specified. This array can be manipulated,\n     * e.g. to remove listeners.\n     *\n     * @public\n     */\n    listenersAny() {\n        return this._anyListeners || [];\n    }\n}\n","\n/**\n * Expose `Backoff`.\n */\n\nmodule.exports = Backoff;\n\n/**\n * Initialize backoff timer with `opts`.\n *\n * - `min` initial timeout in milliseconds [100]\n * - `max` max timeout [10000]\n * - `jitter` [0]\n * - `factor` [2]\n *\n * @param {Object} opts\n * @api public\n */\n\nfunction Backoff(opts) {\n  opts = opts || {};\n  this.ms = opts.min || 100;\n  this.max = opts.max || 10000;\n  this.factor = opts.factor || 2;\n  this.jitter = opts.jitter > 0 && opts.jitter <= 1 ? opts.jitter : 0;\n  this.attempts = 0;\n}\n\n/**\n * Return the backoff duration.\n *\n * @return {Number}\n * @api public\n */\n\nBackoff.prototype.duration = function(){\n  var ms = this.ms * Math.pow(this.factor, this.attempts++);\n  if (this.jitter) {\n    var rand =  Math.random();\n    var deviation = Math.floor(rand * this.jitter * ms);\n    ms = (Math.floor(rand * 10) & 1) == 0  ? ms - deviation : ms + deviation;\n  }\n  return Math.min(ms, this.max) | 0;\n};\n\n/**\n * Reset the number of attempts.\n *\n * @api public\n */\n\nBackoff.prototype.reset = function(){\n  this.attempts = 0;\n};\n\n/**\n * Set the minimum duration\n *\n * @api public\n */\n\nBackoff.prototype.setMin = function(min){\n  this.ms = min;\n};\n\n/**\n * Set the maximum duration\n *\n * @api public\n */\n\nBackoff.prototype.setMax = function(max){\n  this.max = max;\n};\n\n/**\n * Set the jitter\n *\n * @api public\n */\n\nBackoff.prototype.setJitter = function(jitter){\n  this.jitter = jitter;\n};\n\n","import { Socket as Engine, installTimerFunctions, } from \"engine.io-client\";\nimport { Socket } from \"./socket.js\";\nimport * as parser from \"socket.io-parser\";\nimport { on } from \"./on.js\";\nimport Backoff from \"backo2\";\nimport { Emitter, } from \"@socket.io/component-emitter\";\nexport class Manager extends Emitter {\n    constructor(uri, opts) {\n        var _a;\n        super();\n        this.nsps = {};\n        this.subs = [];\n        if (uri && \"object\" === typeof uri) {\n            opts = uri;\n            uri = undefined;\n        }\n        opts = opts || {};\n        opts.path = opts.path || \"/socket.io\";\n        this.opts = opts;\n        installTimerFunctions(this, opts);\n        this.reconnection(opts.reconnection !== false);\n        this.reconnectionAttempts(opts.reconnectionAttempts || Infinity);\n        this.reconnectionDelay(opts.reconnectionDelay || 1000);\n        this.reconnectionDelayMax(opts.reconnectionDelayMax || 5000);\n        this.randomizationFactor((_a = opts.randomizationFactor) !== null && _a !== void 0 ? _a : 0.5);\n        this.backoff = new Backoff({\n            min: this.reconnectionDelay(),\n            max: this.reconnectionDelayMax(),\n            jitter: this.randomizationFactor(),\n        });\n        this.timeout(null == opts.timeout ? 20000 : opts.timeout);\n        this._readyState = \"closed\";\n        this.uri = uri;\n        const _parser = opts.parser || parser;\n        this.encoder = new _parser.Encoder();\n        this.decoder = new _parser.Decoder();\n        this._autoConnect = opts.autoConnect !== false;\n        if (this._autoConnect)\n            this.open();\n    }\n    reconnection(v) {\n        if (!arguments.length)\n            return this._reconnection;\n        this._reconnection = !!v;\n        return this;\n    }\n    reconnectionAttempts(v) {\n        if (v === undefined)\n            return this._reconnectionAttempts;\n        this._reconnectionAttempts = v;\n        return this;\n    }\n    reconnectionDelay(v) {\n        var _a;\n        if (v === undefined)\n            return this._reconnectionDelay;\n        this._reconnectionDelay = v;\n        (_a = this.backoff) === null || _a === void 0 ? void 0 : _a.setMin(v);\n        return this;\n    }\n    randomizationFactor(v) {\n        var _a;\n        if (v === undefined)\n            return this._randomizationFactor;\n        this._randomizationFactor = v;\n        (_a = this.backoff) === null || _a === void 0 ? void 0 : _a.setJitter(v);\n        return this;\n    }\n    reconnectionDelayMax(v) {\n        var _a;\n        if (v === undefined)\n            return this._reconnectionDelayMax;\n        this._reconnectionDelayMax = v;\n        (_a = this.backoff) === null || _a === void 0 ? void 0 : _a.setMax(v);\n        return this;\n    }\n    timeout(v) {\n        if (!arguments.length)\n            return this._timeout;\n        this._timeout = v;\n        return this;\n    }\n    /**\n     * Starts trying to reconnect if reconnection is enabled and we have not\n     * started reconnecting yet\n     *\n     * @private\n     */\n    maybeReconnectOnOpen() {\n        // Only try to reconnect if it's the first time we're connecting\n        if (!this._reconnecting &&\n            this._reconnection &&\n            this.backoff.attempts === 0) {\n            // keeps reconnection from firing twice for the same reconnection loop\n            this.reconnect();\n        }\n    }\n    /**\n     * Sets the current transport `socket`.\n     *\n     * @param {Function} fn - optional, callback\n     * @return self\n     * @public\n     */\n    open(fn) {\n        if (~this._readyState.indexOf(\"open\"))\n            return this;\n        this.engine = new Engine(this.uri, this.opts);\n        const socket = this.engine;\n        const self = this;\n        this._readyState = \"opening\";\n        this.skipReconnect = false;\n        // emit `open`\n        const openSubDestroy = on(socket, \"open\", function () {\n            self.onopen();\n            fn && fn();\n        });\n        // emit `error`\n        const errorSub = on(socket, \"error\", (err) => {\n            self.cleanup();\n            self._readyState = \"closed\";\n            this.emitReserved(\"error\", err);\n            if (fn) {\n                fn(err);\n            }\n            else {\n                // Only do this if there is no fn to handle the error\n                self.maybeReconnectOnOpen();\n            }\n        });\n        if (false !== this._timeout) {\n            const timeout = this._timeout;\n            if (timeout === 0) {\n                openSubDestroy(); // prevents a race condition with the 'open' event\n            }\n            // set timer\n            const timer = this.setTimeoutFn(() => {\n                openSubDestroy();\n                socket.close();\n                // @ts-ignore\n                socket.emit(\"error\", new Error(\"timeout\"));\n            }, timeout);\n            if (this.opts.autoUnref) {\n                timer.unref();\n            }\n            this.subs.push(function subDestroy() {\n                clearTimeout(timer);\n            });\n        }\n        this.subs.push(openSubDestroy);\n        this.subs.push(errorSub);\n        return this;\n    }\n    /**\n     * Alias for open()\n     *\n     * @return self\n     * @public\n     */\n    connect(fn) {\n        return this.open(fn);\n    }\n    /**\n     * Called upon transport open.\n     *\n     * @private\n     */\n    onopen() {\n        // clear old subs\n        this.cleanup();\n        // mark as open\n        this._readyState = \"open\";\n        this.emitReserved(\"open\");\n        // add new subs\n        const socket = this.engine;\n        this.subs.push(on(socket, \"ping\", this.onping.bind(this)), on(socket, \"data\", this.ondata.bind(this)), on(socket, \"error\", this.onerror.bind(this)), on(socket, \"close\", this.onclose.bind(this)), on(this.decoder, \"decoded\", this.ondecoded.bind(this)));\n    }\n    /**\n     * Called upon a ping.\n     *\n     * @private\n     */\n    onping() {\n        this.emitReserved(\"ping\");\n    }\n    /**\n     * Called with data.\n     *\n     * @private\n     */\n    ondata(data) {\n        this.decoder.add(data);\n    }\n    /**\n     * Called when parser fully decodes a packet.\n     *\n     * @private\n     */\n    ondecoded(packet) {\n        this.emitReserved(\"packet\", packet);\n    }\n    /**\n     * Called upon socket error.\n     *\n     * @private\n     */\n    onerror(err) {\n        this.emitReserved(\"error\", err);\n    }\n    /**\n     * Creates a new socket for the given `nsp`.\n     *\n     * @return {Socket}\n     * @public\n     */\n    socket(nsp, opts) {\n        let socket = this.nsps[nsp];\n        if (!socket) {\n            socket = new Socket(this, nsp, opts);\n            this.nsps[nsp] = socket;\n        }\n        return socket;\n    }\n    /**\n     * Called upon a socket close.\n     *\n     * @param socket\n     * @private\n     */\n    _destroy(socket) {\n        const nsps = Object.keys(this.nsps);\n        for (const nsp of nsps) {\n            const socket = this.nsps[nsp];\n            if (socket.active) {\n                return;\n            }\n        }\n        this._close();\n    }\n    /**\n     * Writes a packet.\n     *\n     * @param packet\n     * @private\n     */\n    _packet(packet) {\n        const encodedPackets = this.encoder.encode(packet);\n        for (let i = 0; i < encodedPackets.length; i++) {\n            this.engine.write(encodedPackets[i], packet.options);\n        }\n    }\n    /**\n     * Clean up transport subscriptions and packet buffer.\n     *\n     * @private\n     */\n    cleanup() {\n        this.subs.forEach((subDestroy) => subDestroy());\n        this.subs.length = 0;\n        this.decoder.destroy();\n    }\n    /**\n     * Close the current socket.\n     *\n     * @private\n     */\n    _close() {\n        this.skipReconnect = true;\n        this._reconnecting = false;\n        this.onclose(\"forced close\");\n        if (this.engine)\n            this.engine.close();\n    }\n    /**\n     * Alias for close()\n     *\n     * @private\n     */\n    disconnect() {\n        return this._close();\n    }\n    /**\n     * Called upon engine close.\n     *\n     * @private\n     */\n    onclose(reason) {\n        this.cleanup();\n        this.backoff.reset();\n        this._readyState = \"closed\";\n        this.emitReserved(\"close\", reason);\n        if (this._reconnection && !this.skipReconnect) {\n            this.reconnect();\n        }\n    }\n    /**\n     * Attempt a reconnection.\n     *\n     * @private\n     */\n    reconnect() {\n        if (this._reconnecting || this.skipReconnect)\n            return this;\n        const self = this;\n        if (this.backoff.attempts >= this._reconnectionAttempts) {\n            this.backoff.reset();\n            this.emitReserved(\"reconnect_failed\");\n            this._reconnecting = false;\n        }\n        else {\n            const delay = this.backoff.duration();\n            this._reconnecting = true;\n            const timer = this.setTimeoutFn(() => {\n                if (self.skipReconnect)\n                    return;\n                this.emitReserved(\"reconnect_attempt\", self.backoff.attempts);\n                // check again for the case socket closed in above events\n                if (self.skipReconnect)\n                    return;\n                self.open((err) => {\n                    if (err) {\n                        self._reconnecting = false;\n                        self.reconnect();\n                        this.emitReserved(\"reconnect_error\", err);\n                    }\n                    else {\n                        self.onreconnect();\n                    }\n                });\n            }, delay);\n            if (this.opts.autoUnref) {\n                timer.unref();\n            }\n            this.subs.push(function subDestroy() {\n                clearTimeout(timer);\n            });\n        }\n    }\n    /**\n     * Called upon successful reconnect.\n     *\n     * @private\n     */\n    onreconnect() {\n        const attempt = this.backoff.attempts;\n        this._reconnecting = false;\n        this.backoff.reset();\n        this.emitReserved(\"reconnect\", attempt);\n    }\n}\n","import { url } from \"./url.js\";\nimport { Manager } from \"./manager.js\";\nimport { Socket } from \"./socket.js\";\n/**\n * Managers cache.\n */\nconst cache = {};\nfunction lookup(uri, opts) {\n    if (typeof uri === \"object\") {\n        opts = uri;\n        uri = undefined;\n    }\n    opts = opts || {};\n    const parsed = url(uri, opts.path || \"/socket.io\");\n    const source = parsed.source;\n    const id = parsed.id;\n    const path = parsed.path;\n    const sameNamespace = cache[id] && path in cache[id][\"nsps\"];\n    const newConnection = opts.forceNew ||\n        opts[\"force new connection\"] ||\n        false === opts.multiplex ||\n        sameNamespace;\n    let io;\n    if (newConnection) {\n        io = new Manager(source, opts);\n    }\n    else {\n        if (!cache[id]) {\n            cache[id] = new Manager(source, opts);\n        }\n        io = cache[id];\n    }\n    if (parsed.query && !opts.query) {\n        opts.query = parsed.queryKey;\n    }\n    return io.socket(parsed.path, opts);\n}\n// so that \"lookup\" can be used both as a function (e.g. `io(...)`) and as a\n// namespace (e.g. `io.connect(...)`), for backward compatibility\nObject.assign(lookup, {\n    Manager,\n    Socket,\n    io: lookup,\n    connect: lookup,\n});\n/**\n * Protocol version.\n *\n * @public\n */\nexport { protocol } from \"socket.io-parser\";\n/**\n * Expose constructors for standalone build.\n *\n * @public\n */\nexport { Manager, Socket, lookup as io, lookup as connect, lookup as default, };\n","import parseuri from \"parseuri\";\n/**\n * URL parser.\n *\n * @param uri - url\n * @param path - the request path of the connection\n * @param loc - An object meant to mimic window.location.\n *        Defaults to window.location.\n * @public\n */\nexport function url(uri, path = \"\", loc) {\n    let obj = uri;\n    // default to window.location\n    loc = loc || (typeof location !== \"undefined\" && location);\n    if (null == uri)\n        uri = loc.protocol + \"//\" + loc.host;\n    // relative path support\n    if (typeof uri === \"string\") {\n        if (\"/\" === uri.charAt(0)) {\n            if (\"/\" === uri.charAt(1)) {\n                uri = loc.protocol + uri;\n            }\n            else {\n                uri = loc.host + uri;\n            }\n        }\n        if (!/^(https?|wss?):\\/\\//.test(uri)) {\n            if (\"undefined\" !== typeof loc) {\n                uri = loc.protocol + \"//\" + uri;\n            }\n            else {\n                uri = \"https://\" + uri;\n            }\n        }\n        // parse\n        obj = parseuri(uri);\n    }\n    // make sure we treat `localhost:80` and `localhost` equally\n    if (!obj.port) {\n        if (/^(http|ws)$/.test(obj.protocol)) {\n            obj.port = \"80\";\n        }\n        else if (/^(http|ws)s$/.test(obj.protocol)) {\n     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this;\r\n};\r\n\r\n/**\r\n * Emit `event` with the given args.\r\n *\r\n * @param {String} event\r\n * @param {Mixed} ...\r\n * @return {Emitter}\r\n */\r\n\r\nEmitter.prototype.emit = function(event){\r\n  this._callbacks = this._callbacks || {};\r\n\r\n  var args = new Array(arguments.length - 1)\r\n    , callbacks = this._callbacks['$' + event];\r\n\r\n  for (var i = 1; i < arguments.length; i++) {\r\n    args[i - 1] = arguments[i];\r\n  }\r\n\r\n  if (callbacks) {\r\n    callbacks = callbacks.slice(0);\r\n    for (var i = 0, len = callbacks.length; i < len; ++i) {\r\n      callbacks[i].apply(this, args);\r\n    }\r\n  }\r\n\r\n  return this;\r\n};\r\n\r\n/**\r\n * Return array of callbacks for `event`.\r\n *\r\n * @param {String} event\r\n * @return {Array}\r\n * @api public\r\n */\r\n\r\nEmitter.prototype.listeners = function(event){\r\n  this._callbacks = this._callbacks || {};\r\n  return this._callbacks['$' + event] || [];\r\n};\r\n\r\n/**\r\n * Check if this emitter has `event` handlers.\r\n *\r\n * @param {String} event\r\n * @return {Boolean}\r\n * @api public\r\n */\r\n\r\nEmitter.prototype.hasListeners = function(event){\r\n  return !! this.listeners(event).length;\r\n};\r\n","const encodePacket = require(\"./encodePacket\");\nconst decodePacket = require(\"./decodePacket\");\n\nconst SEPARATOR = String.fromCharCode(30); // see https://en.wikipedia.org/wiki/Delimiter#ASCII_delimited_text\n\nconst encodePayload = (packets, callback) => {\n  // some packets may be added to the array while encoding, so the initial length must be saved\n  const length = packets.length;\n  const encodedPackets = new Array(length);\n  let count = 0;\n\n  packets.forEach((packet, i) => {\n    // force base64 encoding for binary packets\n    encodePacket(packet, false, encodedPacket => {\n      encodedPackets[i] = encodedPacket;\n      if (++count === length) {\n        callback(encodedPackets.join(SEPARATOR));\n      }\n    });\n  });\n};\n\nconst decodePayload = (encodedPayload, binaryType) => {\n  const encodedPackets = encodedPayload.split(SEPARATOR);\n  const packets = [];\n  for (let i = 0; i < encodedPackets.length; i++) {\n    const decodedPacket = decodePacket(encodedPackets[i], binaryType);\n    packets.push(decodedPacket);\n    if (decodedPacket.type === \"error\") {\n      break;\n    }\n  }\n  return packets;\n};\n\nmodule.exports = {\n  protocol: 4,\n  encodePacket,\n  encodePayload,\n  decodePacket,\n  decodePayload\n};\n","module.exports = (() => {\n  if (typeof self !== \"undefined\") {\n    return self;\n  } else if (typeof window !== \"undefined\") {\n    return window;\n  } else {\n    return Function(\"return this\")();\n  }\n})();\n","const parser = require(\"engine.io-parser\");\nconst Emitter = require(\"component-emitter\");\n\nclass Transport extends Emitter {\n  /**\n   * Transport abstract constructor.\n   *\n   * @param {Object} options.\n   * @api private\n   */\n  constructor(opts) {\n    super();\n\n    this.opts = opts;\n    this.query = opts.query;\n    this.readyState = \"\";\n    this.socket = opts.socket;\n  }\n\n  /**\n   * Emits an error.\n   *\n   * @param {String} str\n   * @return {Transport} for chaining\n   * @api public\n   */\n  onError(msg, desc) {\n    const err = new Error(msg);\n    err.type = \"TransportError\";\n    err.description = desc;\n    this.emit(\"error\", err);\n    return this;\n  }\n\n  /**\n   * Opens the transport.\n   *\n   * @api public\n   */\n  open() {\n    if (\"closed\" === this.readyState || \"\" === this.readyState) {\n      this.readyState = \"opening\";\n      this.doOpen();\n    }\n\n    return this;\n  }\n\n  /**\n   * Closes the transport.\n   *\n   * @api private\n   */\n  close() {\n    if (\"opening\" === this.readyState || \"open\" === this.readyState) {\n      this.doClose();\n      this.onClose();\n    }\n\n    return this;\n  }\n\n  /**\n   * Sends multiple packets.\n   *\n   * @param {Array} packets\n   * @api private\n   */\n  send(packets) {\n    if (\"open\" === this.readyState) {\n      this.write(packets);\n    } else {\n      throw new Error(\"Transport not open\");\n    }\n  }\n\n  /**\n   * Called upon open\n   *\n   * @api private\n   */\n  onOpen() {\n    this.readyState = \"open\";\n    this.writable = true;\n    this.emit(\"open\");\n  }\n\n  /**\n   * Called with data.\n   *\n   * @param {String} data\n   * @api private\n   */\n  onData(data) {\n    const packet = parser.decodePacket(data, this.socket.binaryType);\n    this.onPacket(packet);\n  }\n\n  /**\n   * Called with a decoded packet.\n   */\n  onPacket(packet) {\n    this.emit(\"packet\", packet);\n  }\n\n  /**\n   * Called upon close.\n   *\n   * @api private\n   */\n  onClose() {\n    this.readyState = \"closed\";\n    this.emit(\"close\");\n  }\n}\n\nmodule.exports = Transport;\n","/**\n * Compiles a querystring\n * Returns string representation of the object\n *\n * @param {Object}\n * @api private\n */\n\nexports.encode = function (obj) {\n  var str = '';\n\n  for (var i in obj) {\n    if (obj.hasOwnProperty(i)) {\n      if (str.length) str += '&';\n      str += encodeURIComponent(i) + '=' + encodeURIComponent(obj[i]);\n    }\n  }\n\n  return str;\n};\n\n/**\n * Parses a simple querystring into an object\n *\n * @param {String} qs\n * @api private\n */\n\nexports.decode = function(qs){\n  var qry = {};\n  var pairs = qs.split('&');\n  for (var i = 0, l = pairs.length; i < l; i++) {\n    var pair = pairs[i].split('=');\n    qry[decodeURIComponent(pair[0])] = decodeURIComponent(pair[1]);\n  }\n  return qry;\n};\n","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.Decoder = exports.Encoder = exports.PacketType = exports.protocol = void 0;\nconst Emitter = require(\"component-emitter\");\nconst binary_1 = require(\"./binary\");\nconst is_binary_1 = require(\"./is-binary\");\n\n\n/**\n * Protocol version.\n *\n * @public\n */\nexports.protocol = 5;\nvar PacketType;\n(function (PacketType) {\n    PacketType[PacketType[\"CONNECT\"] = 0] = \"CONNECT\";\n    PacketType[PacketType[\"DISCONNECT\"] = 1] = \"DISCONNECT\";\n    PacketType[PacketType[\"EVENT\"] = 2] = \"EVENT\";\n    PacketType[PacketType[\"ACK\"] = 3] = \"ACK\";\n    PacketType[PacketType[\"CONNECT_ERROR\"] = 4] = \"CONNECT_ERROR\";\n    PacketType[PacketType[\"BINARY_EVENT\"] = 5] = \"BINARY_EVENT\";\n    PacketType[PacketType[\"BINARY_ACK\"] = 6] = \"BINARY_ACK\";\n})(PacketType = exports.PacketType || (exports.PacketType = {}));\n/**\n * A socket.io Encoder instance\n */\nclass Encoder {\n    /**\n     * Encode a packet as a single string if non-binary, or as a\n     * buffer sequence, depending on packet type.\n     *\n     * @param {Object} obj - packet object\n     */\n    encode(obj) {\n\n\n        if (obj.type === PacketType.EVENT || obj.type === PacketType.ACK) {\n            if (is_binary_1.hasBinary(obj)) {\n                obj.type =\n                    obj.type === PacketType.EVENT\n                        ? PacketType.BINARY_EVENT\n                        : PacketType.BINARY_ACK;\n                return this.encodeAsBinary(obj);\n            }\n        }\n        return [this.encodeAsString(obj)];\n    }\n    /**\n     * Encode packet as string.\n     */\n    encodeAsString(obj) {\n        // first is type\n        let str = \"\" + obj.type;\n        // attachments if we have them\n        if (obj.type === PacketType.BINARY_EVENT ||\n            obj.type === PacketType.BINARY_ACK) {\n            str += obj.attachments + \"-\";\n        }\n        // if we have a namespace other than `/`\n        // we append it followed by a comma `,`\n        if (obj.nsp && \"/\" !== obj.nsp) {\n            str += obj.nsp + \",\";\n        }\n        // immediately followed by the id\n        if (null != obj.id) {\n            str += obj.id;\n        }\n        // json data\n        if (null != obj.data) {\n            str += JSON.stringify(obj.data);\n        }\n\n\n        return str;\n    }\n    /**\n     * Encode packet as 'buffer sequence' by removing blobs, and\n     * deconstructing packet into object with placeholders and\n     * a list of buffers.\n     */\n    encodeAsBinary(obj) {\n        const deconstruction = binary_1.deconstructPacket(obj);\n        const pack = this.encodeAsString(deconstruction.packet);\n        const buffers = deconstruction.buffers;\n        buffers.unshift(pack); // add packet info to beginning of data list\n        return buffers; // write all the buffers\n    }\n}\nexports.Encoder = Encoder;\n/**\n * A socket.io Decoder instance\n *\n * @return {Object} decoder\n */\nclass Decoder extends Emitter {\n    constructor() {\n        super();\n    }\n    /**\n     * Decodes an encoded packet string into packet JSON.\n     *\n     * @param {String} obj - encoded packet\n     */\n    add(obj) {\n        let packet;\n        if (typeof obj === \"string\") {\n            packet = this.decodeString(obj);\n            if (packet.type === PacketType.BINARY_EVENT ||\n                packet.type === PacketType.BINARY_ACK) {\n                // binary packet's json\n                this.reconstructor = new BinaryReconstructor(packet);\n                // no attachments, labeled binary but no binary data to follow\n                if (packet.attachments === 0) {\n                    super.emit(\"decoded\", packet);\n                }\n            }\n            else {\n                // non-binary full packet\n                super.emit(\"decoded\", packet);\n            }\n        }\n        else if (is_binary_1.isBinary(obj) || obj.base64) {\n            // raw binary data\n            if (!this.reconstructor) {\n                throw new Error(\"got binary data when not reconstructing a packet\");\n            }\n            else {\n                packet = this.reconstructor.takeBinaryData(obj);\n                if (packet) {\n                    // received final buffer\n                    this.reconstructor = null;\n                    super.emit(\"decoded\", packet);\n                }\n            }\n        }\n        else {\n            throw new Error(\"Unknown type: \" + obj);\n        }\n    }\n    /**\n     * Decode a packet String (JSON data)\n     *\n     * @param {String} str\n     * @return {Object} packet\n     */\n    decodeString(str) {\n        let i = 0;\n        // look up type\n        const p = {\n            type: Number(str.charAt(0)),\n        };\n        if (PacketType[p.type] === undefined) {\n            throw new Error(\"unknown packet type \" + p.type);\n        }\n        // look up attachments if type binary\n        if (p.type === PacketType.BINARY_EVENT ||\n            p.type === PacketType.BINARY_ACK) {\n            const start = i + 1;\n            while (str.charAt(++i) !== \"-\" && i != str.length) { }\n            const buf = str.substring(start, i);\n            if (buf != Number(buf) || str.charAt(i) !== \"-\") {\n                throw new Error(\"Illegal attachments\");\n            }\n            p.attachments = Number(buf);\n        }\n        // look up namespace (if any)\n        if (\"/\" === str.charAt(i + 1)) {\n            const start = i + 1;\n            while (++i) {\n                const c = str.charAt(i);\n                if (\",\" === c)\n                    break;\n                if (i === str.length)\n                    break;\n            }\n            p.nsp = str.substring(start, i);\n        }\n        else {\n            p.nsp = \"/\";\n        }\n        // look up id\n        const next = str.charAt(i + 1);\n        if (\"\" !== next && Number(next) == next) {\n            const start = i + 1;\n            while (++i) {\n                const c = str.charAt(i);\n                if (null == c || Number(c) != c) {\n                    --i;\n                    break;\n                }\n                if (i === str.length)\n                    break;\n            }\n            p.id = Number(str.substring(start, i + 1));\n        }\n        // look up json data\n        if (str.charAt(++i)) {\n            const payload = tryParse(str.substr(i));\n            if (Decoder.isPayloadValid(p.type, payload)) {\n                p.data = payload;\n            }\n            else {\n                throw new Error(\"invalid payload\");\n            }\n        }\n\n\n        return p;\n    }\n    static isPayloadValid(type, payload) {\n        switch (type) {\n            case PacketType.CONNECT:\n                return typeof payload === \"object\";\n            case PacketType.DISCONNECT:\n                return payload === undefined;\n            case PacketType.CONNECT_ERROR:\n                return typeof payload === \"string\" || typeof payload === \"object\";\n            case PacketType.EVENT:\n            case PacketType.BINARY_EVENT:\n                return Array.isArray(payload) && payload.length > 0;\n            case PacketType.ACK:\n            case PacketType.BINARY_ACK:\n                return Array.isArray(payload);\n        }\n    }\n    /**\n     * Deallocates a parser's resources\n     */\n    destroy() {\n        if (this.reconstructor) {\n            this.reconstructor.finishedReconstruction();\n        }\n    }\n}\nexports.Decoder = Decoder;\nfunction tryParse(str) {\n    try {\n        return JSON.parse(str);\n    }\n    catch (e) {\n        return false;\n    }\n}\n/**\n * A manager of a binary event's 'buffer sequence'. Should\n * be constructed whenever a packet of type BINARY_EVENT is\n * decoded.\n *\n * @param {Object} packet\n * @return {BinaryReconstructor} initialized reconstructor\n */\nclass BinaryReconstructor {\n    constructor(packet) {\n        this.packet = packet;\n        this.buffers = [];\n        this.reconPack = packet;\n    }\n    /**\n     * Method to be called when binary data received from connection\n     * after a BINARY_EVENT packet.\n     *\n     * @param {Buffer | ArrayBuffer} binData - the raw binary data received\n     * @return {null | Object} returns null if more binary data is expected or\n     *   a reconstructed packet object if all buffers have been received.\n     */\n    takeBinaryData(binData) {\n        this.buffers.push(binData);\n        if (this.buffers.length === this.reconPack.attachments) {\n            // done with buffer list\n            const packet = binary_1.reconstructPacket(this.reconPack, this.buffers);\n            this.finishedReconstruction();\n            return packet;\n        }\n        return null;\n    }\n    /**\n     * Cleans up binary packet reconstruction variables.\n     */\n    finishedReconstruction() {\n        this.reconPack = null;\n        this.buffers = [];\n    }\n}\n","/**\n * Parses an URI\n *\n * @author Steven Levithan <stevenlevithan.com> (MIT license)\n * @api private\n */\n\nvar re = /^(?:(?![^:@]+:[^:@\\/]*@)(http|https|ws|wss):\\/\\/)?((?:(([^:@]*)(?::([^:@]*))?)?@)?((?:[a-f0-9]{0,4}:){2,7}[a-f0-9]{0,4}|[^:\\/?#]*)(?::(\\d*))?)(((\\/(?:[^?#](?![^?#\\/]*\\.[^?#\\/.]+(?:[?#]|$)))*\\/?)?([^?#\\/]*))(?:\\?([^#]*))?(?:#(.*))?)/;\n\nvar parts = [\n    'source', 'protocol', 'authority', 'userInfo', 'user', 'password', 'host', 'port', 'relative', 'path', 'directory', 'file', 'query', 'anchor'\n];\n\nmodule.exports = function parseuri(str) {\n    var src = str,\n        b = str.indexOf('['),\n        e = str.indexOf(']');\n\n    if (b != -1 && e != -1) {\n        str = str.substring(0, b) + str.substring(b, e).replace(/:/g, ';') + str.substring(e, str.length);\n    }\n\n    var m = re.exec(str || ''),\n        uri = {},\n        i = 14;\n\n    while (i--) {\n        uri[parts[i]] = m[i] || '';\n    }\n\n    if (b != -1 && e != -1) {\n        uri.source = src;\n        uri.host = uri.host.substring(1, uri.host.length - 1).replace(/;/g, ':');\n        uri.authority = uri.authority.replace('[', '').replace(']', '').replace(/;/g, ':');\n        uri.ipv6uri = true;\n    }\n\n    uri.pathNames = pathNames(uri, uri['path']);\n    uri.queryKey = queryKey(uri, uri['query']);\n\n    return uri;\n};\n\nfunction pathNames(obj, path) {\n    var regx = /\\/{2,9}/g,\n        names = path.replace(regx, \"/\").split(\"/\");\n\n    if (path.substr(0, 1) == '/' || path.length === 0) {\n        names.splice(0, 1);\n    }\n    if (path.substr(path.length - 1, 1) == '/') {\n        names.splice(names.length - 1, 1);\n    }\n\n    return names;\n}\n\nfunction queryKey(uri, query) {\n    var data = {};\n\n    query.replace(/(?:^|&)([^&=]*)=?([^&]*)/g, function ($0, $1, $2) {\n        if ($1) {\n            data[$1] = $2;\n        }\n    });\n\n    return data;\n}\n","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.Manager = void 0;\nconst eio = require(\"engine.io-client\");\nconst socket_1 = require(\"./socket\");\nconst Emitter = require(\"component-emitter\");\nconst parser = require(\"socket.io-parser\");\nconst on_1 = require(\"./on\");\nconst Backoff = require(\"backo2\");\n\n\nclass Manager extends Emitter {\n    constructor(uri, opts) {\n        super();\n        this.nsps = {};\n        this.subs = [];\n        if (uri && \"object\" === typeof uri) {\n            opts = uri;\n            uri = undefined;\n        }\n        opts = opts || {};\n        opts.path = opts.path || \"/socket.io\";\n        this.opts = opts;\n        this.reconnection(opts.reconnection !== false);\n        this.reconnectionAttempts(opts.reconnectionAttempts || Infinity);\n        this.reconnectionDelay(opts.reconnectionDelay || 1000);\n        this.reconnectionDelayMax(opts.reconnectionDelayMax || 5000);\n        this.randomizationFactor(opts.randomizationFactor || 0.5);\n        this.backoff = new Backoff({\n            min: this.reconnectionDelay(),\n            max: this.reconnectionDelayMax(),\n            jitter: this.randomizationFactor(),\n        });\n        this.timeout(null == opts.timeout ? 20000 : opts.timeout);\n        this._readyState = \"closed\";\n        this.uri = uri;\n        const _parser = opts.parser || parser;\n        this.encoder = new _parser.Encoder();\n        this.decoder = new _parser.Decoder();\n        this._autoConnect = opts.autoConnect !== false;\n        if (this._autoConnect)\n            this.open();\n    }\n    reconnection(v) {\n        if (!arguments.length)\n            return this._reconnection;\n        this._reconnection = !!v;\n        return this;\n    }\n    reconnectionAttempts(v) {\n        if (v === undefined)\n            return this._reconnectionAttempts;\n        this._reconnectionAttempts = v;\n        return this;\n    }\n    reconnectionDelay(v) {\n        var _a;\n        if (v === undefined)\n            return this._reconnectionDelay;\n        this._reconnectionDelay = v;\n        (_a = this.backoff) === null || _a === void 0 ? void 0 : _a.setMin(v);\n        return this;\n    }\n    randomizationFactor(v) {\n        var _a;\n        if (v === undefined)\n            return this._randomizationFactor;\n        this._randomizationFactor = v;\n        (_a = this.backoff) === null || _a === void 0 ? void 0 : _a.setJitter(v);\n        return this;\n    }\n    reconnectionDelayMax(v) {\n        var _a;\n        if (v === undefined)\n            return this._reconnectionDelayMax;\n        this._reconnectionDelayMax = v;\n        (_a = this.backoff) === null || _a === void 0 ? void 0 : _a.setMax(v);\n        return this;\n    }\n    timeout(v) {\n        if (!arguments.length)\n            return this._timeout;\n        this._timeout = v;\n        return this;\n    }\n    /**\n     * Starts trying to reconnect if reconnection is enabled and we have not\n     * started reconnecting yet\n     *\n     * @private\n     */\n    maybeReconnectOnOpen() {\n        // Only try to reconnect if it's the first time we're connecting\n        if (!this._reconnecting &&\n            this._reconnection &&\n            this.backoff.attempts === 0) {\n            // keeps reconnection from firing twice for the same reconnection loop\n            this.reconnect();\n        }\n    }\n    /**\n     * Sets the current transport `socket`.\n     *\n     * @param {Function} fn - optional, callback\n     * @return self\n     * @public\n     */\n    open(fn) {\n\n\n        if (~this._readyState.indexOf(\"open\"))\n            return this;\n\n\n        this.engine = eio(this.uri, this.opts);\n        const socket = this.engine;\n        const self = this;\n        this._readyState = \"opening\";\n        this.skipReconnect = false;\n        // emit `open`\n        const openSubDestroy = on_1.on(socket, \"open\", function () {\n            self.onopen();\n            fn && fn();\n        });\n        // emit `error`\n        const errorSub = on_1.on(socket, \"error\", (err) => {\n\n\n            self.cleanup();\n            self._readyState = \"closed\";\n            super.emit(\"error\", err);\n            if (fn) {\n                fn(err);\n            }\n            else {\n                // Only do this if there is no fn to handle the error\n                self.maybeReconnectOnOpen();\n            }\n        });\n        if (false !== this._timeout) {\n            const timeout = this._timeout;\n\n\n            if (timeout === 0) {\n                openSubDestroy(); // prevents a race condition with the 'open' event\n            }\n            // set timer\n            const timer = setTimeout(() => {\n\n\n                openSubDestroy();\n                socket.close();\n                socket.emit(\"error\", new Error(\"timeout\"));\n            }, timeout);\n            this.subs.push(function subDestroy() {\n                clearTimeout(timer);\n            });\n        }\n        this.subs.push(openSubDestroy);\n        this.subs.push(errorSub);\n        return this;\n    }\n    /**\n     * Alias for open()\n     *\n     * @return self\n     * @public\n     */\n    connect(fn) {\n        return this.open(fn);\n    }\n    /**\n     * Called upon transport open.\n     *\n     * @private\n     */\n    onopen() {\n\n\n        // clear old subs\n        this.cleanup();\n        // mark as open\n        this._readyState = \"open\";\n        super.emit(\"open\");\n        // add new subs\n        const socket = this.engine;\n        this.subs.push(on_1.on(socket, \"ping\", this.onping.bind(this)), on_1.on(socket, \"data\", this.ondata.bind(this)), on_1.on(socket, \"error\", this.onerror.bind(this)), on_1.on(socket, \"close\", this.onclose.bind(this)), on_1.on(this.decoder, \"decoded\", this.ondecoded.bind(this)));\n    }\n    /**\n     * Called upon a ping.\n     *\n     * @private\n     */\n    onping() {\n        super.emit(\"ping\");\n    }\n    /**\n     * Called with data.\n     *\n     * @private\n     */\n    ondata(data) {\n        this.decoder.add(data);\n    }\n    /**\n     * Called when parser fully decodes a packet.\n     *\n     * @private\n     */\n    ondecoded(packet) {\n        super.emit(\"packet\", packet);\n    }\n    /**\n     * Called upon socket error.\n     *\n     * @private\n     */\n    onerror(err) {\n\n\n        super.emit(\"error\", err);\n    }\n    /**\n     * Creates a new socket for the given `nsp`.\n     *\n     * @return {Socket}\n     * @public\n     */\n    socket(nsp, opts) {\n        let socket = this.nsps[nsp];\n        if (!socket) {\n            socket = new socket_1.Socket(this, nsp, opts);\n            this.nsps[nsp] = socket;\n        }\n        return socket;\n    }\n    /**\n     * Called upon a socket close.\n     *\n     * @param socket\n     * @private\n     */\n    _destroy(socket) {\n        const nsps = Object.keys(this.nsps);\n        for (const nsp of nsps) {\n            const socket = this.nsps[nsp];\n            if (socket.active) {\n\n\n                return;\n            }\n        }\n        this._close();\n    }\n    /**\n     * Writes a packet.\n     *\n     * @param packet\n     * @private\n     */\n    _packet(packet) {\n\n\n        const encodedPackets = this.encoder.encode(packet);\n        for (let i = 0; i < encodedPackets.length; i++) {\n            this.engine.write(encodedPackets[i], packet.options);\n        }\n    }\n    /**\n     * Clean up transport subscriptions and packet buffer.\n     *\n     * @private\n     */\n    cleanup() {\n\n\n        this.subs.forEach((subDestroy) => subDestroy());\n        this.subs.length = 0;\n        this.decoder.destroy();\n    }\n    /**\n     * Close the current socket.\n     *\n     * @private\n     */\n    _close() {\n\n\n        this.skipReconnect = true;\n        this._reconnecting = false;\n        if (\"opening\" === this._readyState) {\n            // `onclose` will not fire because\n            // an open event never happened\n            this.cleanup();\n        }\n        this.backoff.reset();\n        this._readyState = \"closed\";\n        if (this.engine)\n            this.engine.close();\n    }\n    /**\n     * Alias for close()\n     *\n     * @private\n     */\n    disconnect() {\n        return this._close();\n    }\n    /**\n     * Called upon engine close.\n     *\n     * @private\n     */\n    onclose(reason) {\n\n\n        this.cleanup();\n        this.backoff.reset();\n        this._readyState = \"closed\";\n        super.emit(\"close\", reason);\n        if (this._reconnection && !this.skipReconnect) {\n            this.reconnect();\n        }\n    }\n    /**\n     * Attempt a reconnection.\n     *\n     * @private\n     */\n    reconnect() {\n        if (this._reconnecting || this.skipReconnect)\n            return this;\n        const self = this;\n        if (this.backoff.attempts >= this._reconnectionAttempts) {\n\n\n            this.backoff.reset();\n            super.emit(\"reconnect_failed\");\n            this._reconnecting = false;\n        }\n        else {\n            const delay = this.backoff.duration();\n\n\n            this._reconnecting = true;\n            const timer = setTimeout(() => {\n                if (self.skipReconnect)\n                    return;\n\n\n                super.emit(\"reconnect_attempt\", self.backoff.attempts);\n                // check again for the case socket closed in above events\n                if (self.skipReconnect)\n                    return;\n                self.open((err) => {\n                    if (err) {\n\n\n                        self._reconnecting = false;\n                        self.reconnect();\n                        super.emit(\"reconnect_error\", err);\n                    }\n                    else {\n\n\n                        self.onreconnect();\n                    }\n                });\n            }, delay);\n            this.subs.push(function subDestroy() {\n                clearTimeout(timer);\n            });\n        }\n    }\n    /**\n     * Called upon successful reconnect.\n     *\n     * @private\n     */\n    onreconnect() {\n        const attempt = this.backoff.attempts;\n        this._reconnecting = false;\n        this.backoff.reset();\n        super.emit(\"reconnect\", attempt);\n    }\n}\nexports.Manager = Manager;\n","const XMLHttpRequest = require(\"xmlhttprequest-ssl\");\nconst XHR = require(\"./polling-xhr\");\nconst JSONP = require(\"./polling-jsonp\");\nconst websocket = require(\"./websocket\");\n\nexports.polling = polling;\nexports.websocket = websocket;\n\n/**\n * Polling transport polymorphic constructor.\n * Decides on xhr vs jsonp based on feature detection.\n *\n * @api private\n */\n\nfunction polling(opts) {\n  let xhr;\n  let xd = false;\n  let xs = false;\n  const jsonp = false !== opts.jsonp;\n\n  if (typeof location !== \"undefined\") {\n    const isSSL = \"https:\" === location.protocol;\n    let port = location.port;\n\n    // some user agents have empty `location.port`\n    if (!port) {\n      port = isSSL ? 443 : 80;\n    }\n\n    xd = opts.hostname !== location.hostname || port !== opts.port;\n    xs = opts.secure !== isSSL;\n  }\n\n  opts.xdomain = xd;\n  opts.xscheme = xs;\n  xhr = new XMLHttpRequest(opts);\n\n  if (\"open\" in xhr && !opts.forceJSONP) {\n    return new XHR(opts);\n  } else {\n    if (!jsonp) throw new Error(\"JSONP disabled\");\n    return new JSONP(opts);\n  }\n}\n","// browser shim for xmlhttprequest module\n\nconst hasCORS = require(\"has-cors\");\nconst globalThis = require(\"./globalThis\");\n\nmodule.exports = function(opts) {\n  const xdomain = opts.xdomain;\n\n  // scheme must be same when usign XDomainRequest\n  // http://blogs.msdn.com/b/ieinternals/archive/2010/05/13/xdomainrequest-restrictions-limitations-and-workarounds.aspx\n  const xscheme = opts.xscheme;\n\n  // XDomainRequest has a flow of not sending cookie, therefore it should be disabled as a default.\n  // https://github.com/Automattic/engine.io-client/pull/217\n  const enablesXDR = opts.enablesXDR;\n\n  // XMLHttpRequest can be disabled on IE\n  try {\n    if (\"undefined\" !== typeof XMLHttpRequest && (!xdomain || hasCORS)) {\n      return new XMLHttpRequest();\n    }\n  } catch (e) {}\n\n  // Use XDomainRequest for IE8 if enablesXDR is true\n  // because loading bar keeps flashing when using jsonp-polling\n  // https://github.com/yujiosaka/socke.io-ie8-loading-example\n  try {\n    if (\"undefined\" !== typeof XDomainRequest && !xscheme && enablesXDR) {\n      return new XDomainRequest();\n    }\n  } catch (e) {}\n\n  if (!xdomain) {\n    try {\n      return new globalThis[[\"Active\"].concat(\"Object\").join(\"X\")](\n        \"Microsoft.XMLHTTP\"\n      );\n    } catch (e) {}\n  }\n};\n","const Transport = require(\"../transport\");\nconst parseqs = require(\"parseqs\");\nconst parser = require(\"engine.io-parser\");\nconst yeast = require(\"yeast\");\n\n\n\n\nclass Polling extends Transport {\n  /**\n   * Transport name.\n   */\n  get name() {\n    return \"polling\";\n  }\n\n  /**\n   * Opens the socket (triggers polling). We write a PING message to determine\n   * when the transport is open.\n   *\n   * @api private\n   */\n  doOpen() {\n    this.poll();\n  }\n\n  /**\n   * Pauses polling.\n   *\n   * @param {Function} callback upon buffers are flushed and transport is paused\n   * @api private\n   */\n  pause(onPause) {\n    const self = this;\n\n    this.readyState = \"pausing\";\n\n    function pause() {\n\n\n      self.readyState = \"paused\";\n      onPause();\n    }\n\n    if (this.polling || !this.writable) {\n      let total = 0;\n\n      if (this.polling) {\n\n\n        total++;\n        this.once(\"pollComplete\", function() {\n\n\n          --total || pause();\n        });\n      }\n\n      if (!this.writable) {\n\n\n        total++;\n        this.once(\"drain\", function() {\n\n\n          --total || pause();\n        });\n      }\n    } else {\n      pause();\n    }\n  }\n\n  /**\n   * Starts polling cycle.\n   *\n   * @api public\n   */\n  poll() {\n\n\n    this.polling = true;\n    this.doPoll();\n    this.emit(\"poll\");\n  }\n\n  /**\n   * Overloads onData to detect payloads.\n   *\n   * @api private\n   */\n  onData(data) {\n    const self = this;\n\n\n    const callback = function(packet, index, total) {\n      // if its the first message we consider the transport open\n      if (\"opening\" === self.readyState && packet.type === \"open\") {\n        self.onOpen();\n      }\n\n      // if its a close packet, we close the ongoing requests\n      if (\"close\" === packet.type) {\n        self.onClose();\n        return false;\n      }\n\n      // otherwise bypass onData and handle the message\n      self.onPacket(packet);\n    };\n\n    // decode payload\n    parser.decodePayload(data, this.socket.binaryType).forEach(callback);\n\n    // if an event did not trigger closing\n    if (\"closed\" !== this.readyState) {\n      // if we got data we're not polling\n      this.polling = false;\n      this.emit(\"pollComplete\");\n\n      if (\"open\" === this.readyState) {\n        this.poll();\n      } else {\n\n\n      }\n    }\n  }\n\n  /**\n   * For polling, send a close packet.\n   *\n   * @api private\n   */\n  doClose() {\n    const self = this;\n\n    function close() {\n\n\n      self.write([{ type: \"close\" }]);\n    }\n\n    if (\"open\" === this.readyState) {\n\n\n      close();\n    } else {\n      // in case we're trying to close while\n      // handshaking is in progress (GH-164)\n\n\n      this.once(\"open\", close);\n    }\n  }\n\n  /**\n   * Writes a packets payload.\n   *\n   * @param {Array} data packets\n   * @param {Function} drain callback\n   * @api private\n   */\n  write(packets) {\n    this.writable = false;\n\n    parser.encodePayload(packets, data => {\n      this.doWrite(data, () => {\n        this.writable = true;\n        this.emit(\"drain\");\n      });\n    });\n  }\n\n  /**\n   * Generates uri for connection.\n   *\n   * @api private\n   */\n  uri() {\n    let query = this.query || {};\n    const schema = this.opts.secure ? \"https\" : \"http\";\n    let port = \"\";\n\n    // cache busting is forced\n    if (false !== this.opts.timestampRequests) {\n      query[this.opts.timestampParam] = yeast();\n    }\n\n    if (!this.supportsBinary && !query.sid) {\n      query.b64 = 1;\n    }\n\n    query = parseqs.encode(query);\n\n    // avoid port if default for schema\n    if (\n      this.opts.port &&\n      ((\"https\" === schema && Number(this.opts.port) !== 443) ||\n        (\"http\" === schema && Number(this.opts.port) !== 80))\n    ) {\n      port = \":\" + this.opts.port;\n    }\n\n    // prepend ? to query\n    if (query.length) {\n      query = \"?\" + query;\n    }\n\n    const ipv6 = this.opts.hostname.indexOf(\":\") !== -1;\n    return (\n      schema +\n      \"://\" +\n      (ipv6 ? \"[\" + this.opts.hostname + \"]\" : this.opts.hostname) +\n      port +\n      this.opts.path +\n      query\n    );\n  }\n}\n\nmodule.exports = Polling;\n","const PACKET_TYPES = Object.create(null); // no Map = no polyfill\nPACKET_TYPES[\"open\"] = \"0\";\nPACKET_TYPES[\"close\"] = \"1\";\nPACKET_TYPES[\"ping\"] = \"2\";\nPACKET_TYPES[\"pong\"] = \"3\";\nPACKET_TYPES[\"message\"] = \"4\";\nPACKET_TYPES[\"upgrade\"] = \"5\";\nPACKET_TYPES[\"noop\"] = \"6\";\n\nconst PACKET_TYPES_REVERSE = Object.create(null);\nObject.keys(PACKET_TYPES).forEach(key => {\n  PACKET_TYPES_REVERSE[PACKET_TYPES[key]] = key;\n});\n\nconst ERROR_PACKET = { type: \"error\", data: \"parser error\" };\n\nmodule.exports = {\n  PACKET_TYPES,\n  PACKET_TYPES_REVERSE,\n  ERROR_PACKET\n};\n","'use strict';\n\nvar alphabet = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-_'.split('')\n  , length = 64\n  , map = {}\n  , seed = 0\n  , i = 0\n  , prev;\n\n/**\n * Return a string representing the specified number.\n *\n * @param {Number} num The number to convert.\n * @returns {String} The string representation of the number.\n * @api public\n */\nfunction encode(num) {\n  var encoded = '';\n\n  do {\n    encoded = alphabet[num % length] + encoded;\n    num = Math.floor(num / length);\n  } while (num > 0);\n\n  return encoded;\n}\n\n/**\n * Return the integer value specified by the given string.\n *\n * @param {String} str The string to convert.\n * @returns {Number} The integer value represented by the string.\n * @api public\n */\nfunction decode(str) {\n  var decoded = 0;\n\n  for (i = 0; i < str.length; i++) {\n    decoded = decoded * length + map[str.charAt(i)];\n  }\n\n  return decoded;\n}\n\n/**\n * Yeast: A tiny growing id generator.\n *\n * @returns {String} A unique id.\n * @api public\n */\nfunction yeast() {\n  var now = encode(+new Date());\n\n  if (now !== prev) return seed = 0, prev = now;\n  return now +'.'+ encode(seed++);\n}\n\n//\n// Map each character to its index.\n//\nfor (; i < length; i++) map[alphabet[i]] = i;\n\n//\n// Expose the `yeast`, `encode` and `decode` functions.\n//\nyeast.encode = encode;\nyeast.decode = decode;\nmodule.exports = yeast;\n","module.exports.pick = (obj, ...attr) => {\n  return attr.reduce((acc, k) => {\n    if (obj.hasOwnProperty(k)) {\n      acc[k] = obj[k];\n    }\n    return acc;\n  }, {});\n};\n","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.Socket = void 0;\nconst socket_io_parser_1 = require(\"socket.io-parser\");\nconst Emitter = require(\"component-emitter\");\nconst on_1 = require(\"./on\");\n\n\n/**\n * Internal events.\n * These events can't be emitted by the user.\n */\nconst RESERVED_EVENTS = Object.freeze({\n    connect: 1,\n    connect_error: 1,\n    disconnect: 1,\n    disconnecting: 1,\n    // EventEmitter reserved events: https://nodejs.org/api/events.html#events_event_newlistener\n    newListener: 1,\n    removeListener: 1,\n});\nclass Socket extends Emitter {\n    /**\n     * `Socket` constructor.\n     *\n     * @public\n     */\n    constructor(io, nsp, opts) {\n        super();\n        this.receiveBuffer = [];\n        this.sendBuffer = [];\n        this.ids = 0;\n        this.acks = {};\n        this.flags = {};\n        this.io = io;\n        this.nsp = nsp;\n        this.ids = 0;\n        this.acks = {};\n        this.receiveBuffer = [];\n        this.sendBuffer = [];\n        this.connected = false;\n        this.disconnected = true;\n        this.flags = {};\n        if (opts && opts.auth) {\n            this.auth = opts.auth;\n        }\n        if (this.io._autoConnect)\n            this.open();\n    }\n    /**\n     * Subscribe to open, close and packet events\n     *\n     * @private\n     */\n    subEvents() {\n        if (this.subs)\n            return;\n        const io = this.io;\n        this.subs = [\n            on_1.on(io, \"open\", this.onopen.bind(this)),\n            on_1.on(io, \"packet\", this.onpacket.bind(this)),\n            on_1.on(io, \"error\", this.onerror.bind(this)),\n            on_1.on(io, \"close\", this.onclose.bind(this)),\n        ];\n    }\n    /**\n     * Whether the Socket will try to reconnect when its Manager connects or reconnects\n     */\n    get active() {\n        return !!this.subs;\n    }\n    /**\n     * \"Opens\" the socket.\n     *\n     * @public\n     */\n    connect() {\n        if (this.connected)\n            return this;\n        this.subEvents();\n        if (!this.io[\"_reconnecting\"])\n            this.io.open(); // ensure open\n        if (\"open\" === this.io._readyState)\n            this.onopen();\n        return this;\n    }\n    /**\n     * Alias for connect()\n     */\n    open() {\n        return this.connect();\n    }\n    /**\n     * Sends a `message` event.\n     *\n     * @return self\n     * @public\n     */\n    send(...args) {\n        args.unshift(\"message\");\n        this.emit.apply(this, args);\n        return this;\n    }\n    /**\n     * Override `emit`.\n     * If the event is in `events`, it's emitted normally.\n     *\n     * @param ev - event name\n     * @return self\n     * @public\n     */\n    emit(ev, ...args) {\n        if (RESERVED_EVENTS.hasOwnProperty(ev)) {\n            throw new Error('\"' + ev + '\" is a reserved event name');\n        }\n        args.unshift(ev);\n        const packet = {\n            type: socket_io_parser_1.PacketType.EVENT,\n            data: args,\n        };\n        packet.options = {};\n        packet.options.compress = this.flags.compress !== false;\n        // event ack callback\n        if (\"function\" === typeof args[args.length - 1]) {\n\n\n            this.acks[this.ids] = args.pop();\n            packet.id = this.ids++;\n        }\n        const isTransportWritable = this.io.engine &&\n            this.io.engine.transport &&\n            this.io.engine.transport.writable;\n        const discardPacket = this.flags.volatile && (!isTransportWritable || !this.connected);\n        if (discardPacket) {\n\n\n        }\n        else if (this.connected) {\n            this.packet(packet);\n        }\n        else {\n            this.sendBuffer.push(packet);\n        }\n        this.flags = {};\n        return this;\n    }\n    /**\n     * Sends a packet.\n     *\n     * @param packet\n     * @private\n     */\n    packet(packet) {\n        packet.nsp = this.nsp;\n        this.io._packet(packet);\n    }\n    /**\n     * Called upon engine `open`.\n     *\n     * @private\n     */\n    onopen() {\n\n\n        if (typeof this.auth == \"function\") {\n            this.auth((data) => {\n                this.packet({ type: socket_io_parser_1.PacketType.CONNECT, data });\n            });\n        }\n        else {\n            this.packet({ type: socket_io_parser_1.PacketType.CONNECT, data: this.auth });\n        }\n    }\n    /**\n     * Called upon engine or manager `error`.\n     *\n     * @param err\n     * @private\n     */\n    onerror(err) {\n        if (!this.connected) {\n            super.emit(\"connect_error\", err);\n        }\n    }\n    /**\n     * Called upon engine `close`.\n     *\n     * @param reason\n     * @private\n     */\n    onclose(reason) {\n\n\n        this.connected = false;\n        this.disconnected = true;\n        delete this.id;\n        super.emit(\"disconnect\", reason);\n    }\n    /**\n     * Called with socket packet.\n     *\n     * @param packet\n     * @private\n     */\n    onpacket(packet) {\n        const sameNamespace = packet.nsp === this.nsp;\n        if (!sameNamespace)\n            return;\n        switch (packet.type) {\n            case socket_io_parser_1.PacketType.CONNECT:\n                if (packet.data && packet.data.sid) {\n                    const id = packet.data.sid;\n                    this.onconnect(id);\n                }\n                else {\n                    super.emit(\"connect_error\", new Error(\"It seems you are trying to reach a Socket.IO server in v2.x with a v3.x client, but they are not compatible (more information here: https://socket.io/docs/v3/migrating-from-2-x-to-3-0/)\"));\n                }\n                break;\n            case socket_io_parser_1.PacketType.EVENT:\n                this.onevent(packet);\n                break;\n            case socket_io_parser_1.PacketType.BINARY_EVENT:\n                this.onevent(packet);\n                break;\n            case socket_io_parser_1.PacketType.ACK:\n                this.onack(packet);\n                break;\n            case socket_io_parser_1.PacketType.BINARY_ACK:\n                this.onack(packet);\n                break;\n            case socket_io_parser_1.PacketType.DISCONNECT:\n                this.ondisconnect();\n                break;\n            case socket_io_parser_1.PacketType.CONNECT_ERROR:\n                const err = new Error(packet.data.message);\n                // @ts-ignore\n                err.data = packet.data.data;\n                super.emit(\"connect_error\", err);\n                break;\n        }\n    }\n    /**\n     * Called upon a server event.\n     *\n     * @param packet\n     * @private\n     */\n    onevent(packet) {\n        const args = packet.data || [];\n\n\n        if (null != packet.id) {\n\n\n            args.push(this.ack(packet.id));\n        }\n        if (this.connected) {\n            this.emitEvent(args);\n        }\n        else {\n            this.receiveBuffer.push(Object.freeze(args));\n        }\n    }\n    emitEvent(args) {\n        if (this._anyListeners && this._anyListeners.length) {\n            const listeners = this._anyListeners.slice();\n            for (const listener of listeners) {\n                listener.apply(this, args);\n            }\n        }\n        super.emit.apply(this, args);\n    }\n    /**\n     * Produces an ack callback to emit with an event.\n     *\n     * @private\n     */\n    ack(id) {\n        const self = this;\n        let sent = false;\n        return function (...args) {\n            // prevent double callbacks\n            if (sent)\n                return;\n            sent = true;\n\n\n            self.packet({\n                type: socket_io_parser_1.PacketType.ACK,\n                id: id,\n                data: args,\n            });\n        };\n    }\n    /**\n     * Called upon a server acknowlegement.\n     *\n     * @param packet\n     * @private\n     */\n    onack(packet) {\n        const ack = this.acks[packet.id];\n        if (\"function\" === typeof ack) {\n\n\n            ack.apply(this, packet.data);\n            delete this.acks[packet.id];\n        }\n        else {\n\n\n        }\n    }\n    /**\n     * Called upon server connect.\n     *\n     * @private\n     */\n    onconnect(id) {\n\n\n        this.id = id;\n        this.connected = true;\n        this.disconnected = false;\n        super.emit(\"connect\");\n        this.emitBuffered();\n    }\n    /**\n     * Emit buffered events (received and emitted).\n     *\n     * @private\n     */\n    emitBuffered() {\n        this.receiveBuffer.forEach((args) => this.emitEvent(args));\n        this.receiveBuffer = [];\n        this.sendBuffer.forEach((packet) => this.packet(packet));\n        this.sendBuffer = [];\n    }\n    /**\n     * Called upon server disconnect.\n     *\n     * @private\n     */\n    ondisconnect() {\n\n\n        this.destroy();\n        this.onclose(\"io server disconnect\");\n    }\n    /**\n     * Called upon forced client/server side disconnections,\n     * this method ensures the manager stops tracking us and\n     * that reconnections don't get triggered for this.\n     *\n     * @private\n     */\n    destroy() {\n        if (this.subs) {\n            // clean subscriptions to avoid reconnections\n            this.subs.forEach((subDestroy) => subDestroy());\n            this.subs = undefined;\n        }\n        this.io[\"_destroy\"](this);\n    }\n    /**\n     * Disconnects the socket manually.\n     *\n     * @return self\n     * @public\n     */\n    disconnect() {\n        if (this.connected) {\n\n\n            this.packet({ type: socket_io_parser_1.PacketType.DISCONNECT });\n        }\n        // remove socket from pool\n        this.destroy();\n        if (this.connected) {\n            // fire events\n            this.onclose(\"io client disconnect\");\n        }\n        return this;\n    }\n    /**\n     * Alias for disconnect()\n     *\n     * @return self\n     * @public\n     */\n    close() {\n        return this.disconnect();\n    }\n    /**\n     * Sets the compress flag.\n     *\n     * @param compress - if `true`, compresses the sending data\n     * @return self\n     * @public\n     */\n    compress(compress) {\n        this.flags.compress = compress;\n        return this;\n    }\n    /**\n     * Sets a modifier for a subsequent event emission that the event message will be dropped when this socket is not\n     * ready to send messages.\n     *\n     * @returns self\n     * @public\n     */\n    get volatile() {\n        this.flags.volatile = true;\n        return this;\n    }\n    /**\n     * Adds a listener that will be fired when any event is emitted. The event name is passed as the first argument to the\n     * callback.\n     *\n     * @param listener\n     * @public\n     */\n    onAny(listener) {\n        this._anyListeners = this._anyListeners || [];\n        this._anyListeners.push(listener);\n        return this;\n    }\n    /**\n     * Adds a listener that will be fired when any event is emitted. The event name is passed as the first argument to the\n     * callback. The listener is added to the beginning of the listeners array.\n     *\n     * @param listener\n     * @public\n     */\n    prependAny(listener) {\n        this._anyListeners = this._anyListeners || [];\n        this._anyListeners.unshift(listener);\n        return this;\n    }\n    /**\n     * Removes the listener that will be fired when any event is emitted.\n     *\n     * @param listener\n     * @public\n     */\n    offAny(listener) {\n        if (!this._anyListeners) {\n            return this;\n        }\n        if (listener) {\n            const listeners = this._anyListeners;\n            for (let i = 0; i < listeners.length; i++) {\n                if (listener === listeners[i]) {\n                    listeners.splice(i, 1);\n                    return this;\n                }\n            }\n        }\n        else {\n            this._anyListeners = [];\n        }\n        return this;\n    }\n    /**\n     * Returns an array of listeners that are listening for any event that is specified. This array can be manipulated,\n     * e.g. to remove listeners.\n     *\n     * @public\n     */\n    listenersAny() {\n        return this._anyListeners || [];\n    }\n}\nexports.Socket = Socket;\n","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.hasBinary = exports.isBinary = void 0;\nconst withNativeArrayBuffer = typeof ArrayBuffer === \"function\";\nconst isView = (obj) => {\n    return typeof ArrayBuffer.isView === \"function\"\n        ? ArrayBuffer.isView(obj)\n        : obj.buffer instanceof ArrayBuffer;\n};\nconst toString = Object.prototype.toString;\nconst withNativeBlob = typeof Blob === \"function\" ||\n    (typeof Blob !== \"undefined\" &&\n        toString.call(Blob) === \"[object BlobConstructor]\");\nconst withNativeFile = typeof File === \"function\" ||\n    (typeof File !== \"undefined\" &&\n        toString.call(File) === \"[object FileConstructor]\");\n/**\n * Returns true if obj is a Buffer, an ArrayBuffer, a Blob or a File.\n *\n * @private\n */\nfunction isBinary(obj) {\n    return ((withNativeArrayBuffer && (obj instanceof ArrayBuffer || isView(obj))) ||\n        (withNativeBlob && obj instanceof Blob) ||\n        (withNativeFile && obj instanceof File));\n}\nexports.isBinary = isBinary;\nfunction hasBinary(obj, toJSON) {\n    if (!obj || typeof obj !== \"object\") {\n        return false;\n    }\n    if (Array.isArray(obj)) {\n        for (let i = 0, l = obj.length; i < l; i++) {\n            if (hasBinary(obj[i])) {\n                return true;\n            }\n        }\n        return false;\n    }\n    if (isBinary(obj)) {\n        return true;\n    }\n    if (obj.toJSON &&\n        typeof obj.toJSON === \"function\" &&\n        arguments.length === 1) {\n        return hasBinary(obj.toJSON(), true);\n    }\n    for (const key in obj) {\n        if (Object.prototype.hasOwnProperty.call(obj, key) && hasBinary(obj[key])) {\n            return true;\n        }\n    }\n    return false;\n}\nexports.hasBinary = hasBinary;\n","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.on = void 0;\nfunction on(obj, ev, fn) {\n    obj.on(ev, fn);\n    return function subDestroy() {\n        obj.off(ev, fn);\n    };\n}\nexports.on = on;\n","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.Socket = exports.io = exports.Manager = exports.protocol = void 0;\nconst url_1 = require(\"./url\");\nconst manager_1 = require(\"./manager\");\nconst socket_1 = require(\"./socket\");\nObject.defineProperty(exports, \"Socket\", { enumerable: true, get: function () { return socket_1.Socket; } });\n\n\n/**\n * Module exports.\n */\nmodule.exports = exports = lookup;\n/**\n * Managers cache.\n */\nconst cache = (exports.managers = {});\nfunction lookup(uri, opts) {\n    if (typeof uri === \"object\") {\n        opts = uri;\n        uri = undefined;\n    }\n    opts = opts || {};\n    const parsed = url_1.url(uri, opts.path);\n    const source = parsed.source;\n    const id = parsed.id;\n    const path = parsed.path;\n    const sameNamespace = cache[id] && path in cache[id][\"nsps\"];\n    const newConnection = opts.forceNew ||\n        opts[\"force new connection\"] ||\n        false === opts.multiplex ||\n        sameNamespace;\n    let io;\n    if (newConnection) {\n\n\n        io = new manager_1.Manager(source, opts);\n    }\n    else {\n        if (!cache[id]) {\n\n\n            cache[id] = new manager_1.Manager(source, opts);\n        }\n        io = cache[id];\n    }\n    if (parsed.query && !opts.query) {\n        opts.query = parsed.queryKey;\n    }\n    return io.socket(parsed.path, opts);\n}\nexports.io = lookup;\n/**\n * Protocol version.\n *\n * @public\n */\nvar socket_io_parser_1 = require(\"socket.io-parser\");\nObject.defineProperty(exports, \"protocol\", { enumerable: true, get: function () { return socket_io_parser_1.protocol; } });\n/**\n * `connect`.\n *\n * @param {String} uri\n * @public\n */\nexports.connect = lookup;\n/**\n * Expose constructors for standalone build.\n *\n * @public\n */\nvar manager_2 = require(\"./manager\");\nObject.defineProperty(exports, \"Manager\", { enumerable: true, get: function () { return manager_2.Manager; } });\n","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.url = void 0;\nconst parseuri = require(\"parseuri\");\n\n\n/**\n * URL parser.\n *\n * @param uri - url\n * @param path - the request path of the connection\n * @param loc - An object meant to mimic window.location.\n *        Defaults to window.location.\n * @public\n */\nfunction url(uri, path = \"\", loc) {\n    let obj = uri;\n    // default to window.location\n    loc = loc || (typeof location !== \"undefined\" && location);\n    if (null == uri)\n        uri = loc.protocol + \"//\" + loc.host;\n    // relative path support\n    if (typeof uri === \"string\") {\n        if (\"/\" === uri.charAt(0)) {\n            if (\"/\" === uri.charAt(1)) {\n                uri = loc.protocol + uri;\n            }\n            else {\n                uri = loc.host + uri;\n            }\n        }\n        if (!/^(https?|wss?):\\/\\//.test(uri)) {\n\n\n            if (\"undefined\" !== typeof loc) {\n                uri = loc.protocol + \"//\" + uri;\n            }\n            else {\n                uri = \"https://\" + uri;\n            }\n        }\n        // parse\n\n\n        obj = parseuri(uri);\n    }\n    // make sure we treat `localhost:80` and `localhost` equally\n    if (!obj.port) {\n        if (/^(http|ws)$/.test(obj.protocol)) {\n            obj.port = \"80\";\n        }\n        else if (/^(http|ws)s$/.test(obj.protocol)) {\n            obj.port = \"443\";\n        }\n    }\n    obj.path = obj.path || \"/\";\n    const ipv6 = obj.host.indexOf(\":\") !== -1;\n    const host = ipv6 ? \"[\" + obj.host + \"]\" : obj.host;\n    // define unique id\n    obj.id = obj.protocol + \"://\" + host + \":\" + obj.port + path;\n    // define href\n    obj.href =\n        obj.protocol +\n            \"://\" +\n            host +\n            (loc && loc.port === obj.port ? \"\" : \":\" + obj.port);\n    return obj;\n}\nexports.url = url;\n","const Socket = require(\"./socket\");\n\nmodule.exports = (uri, opts) => new Socket(uri, opts);\n\n/**\n * Expose deps for legacy compatibility\n * and standalone browser access.\n */\n\nmodule.exports.Socket = Socket;\nmodule.exports.protocol = Socket.protocol; // this is an int\nmodule.exports.Transport = require(\"./transport\");\nmodule.exports.transports = require(\"./transports/index\");\nmodule.exports.parser = require(\"engine.io-parser\");\n","const transports = require(\"./transports/index\");\nconst Emitter = require(\"component-emitter\");\n\n\nconst parser = require(\"engine.io-parser\");\nconst parseuri = require(\"parseuri\");\nconst parseqs = require(\"parseqs\");\n\nclass Socket extends Emitter {\n  /**\n   * Socket constructor.\n   *\n   * @param {String|Object} uri or options\n   * @param {Object} options\n   * @api public\n   */\n  constructor(uri, opts = {}) {\n    super();\n\n    if (uri && \"object\" === typeof uri) {\n      opts = uri;\n      uri = null;\n    }\n\n    if (uri) {\n      uri = parseuri(uri);\n      opts.hostname = uri.host;\n      opts.secure = uri.protocol === \"https\" || uri.protocol === \"wss\";\n      opts.port = uri.port;\n      if (uri.query) opts.query = uri.query;\n    } else if (opts.host) {\n      opts.hostname = parseuri(opts.host).host;\n    }\n\n    this.secure =\n      null != opts.secure\n        ? opts.secure\n        : typeof location !== \"undefined\" && \"https:\" === location.protocol;\n\n    if (opts.hostname && !opts.port) {\n      // if no port is specified manually, use the protocol default\n      opts.port = this.secure ? \"443\" : \"80\";\n    }\n\n    this.hostname =\n      opts.hostname ||\n      (typeof location !== \"undefined\" ? location.hostname : \"localhost\");\n    this.port =\n      opts.port ||\n      (typeof location !== \"undefined\" && location.port\n        ? location.port\n        : this.secure\n        ? 443\n        : 80);\n\n    this.transports = opts.transports || [\"polling\", \"websocket\"];\n    this.readyState = \"\";\n    this.writeBuffer = [];\n    this.prevBufferLen = 0;\n\n    this.opts = Object.assign(\n      {\n        path: \"/engine.io\",\n        agent: false,\n        withCredentials: false,\n        upgrade: true,\n        jsonp: true,\n        timestampParam: \"t\",\n        rememberUpgrade: false,\n        rejectUnauthorized: true,\n        perMessageDeflate: {\n          threshold: 1024\n        },\n        transportOptions: {}\n      },\n      opts\n    );\n\n    this.opts.path = this.opts.path.replace(/\\/$/, \"\") + \"/\";\n\n    if (typeof this.opts.query === \"string\") {\n      this.opts.query = parseqs.decode(this.opts.query);\n    }\n\n    // set on handshake\n    this.id = null;\n    this.upgrades = null;\n    this.pingInterval = null;\n    this.pingTimeout = null;\n\n    // set on heartbeat\n    this.pingTimeoutTimer = null;\n\n    if (typeof addEventListener === \"function\") {\n      addEventListener(\n        \"beforeunload\",\n        () => {\n          if (this.transport) {\n            // silently close the transport\n            this.transport.removeAllListeners();\n            this.transport.close();\n          }\n        },\n        false\n      );\n    }\n\n    this.open();\n  }\n\n  /**\n   * Creates transport of the given type.\n   *\n   * @param {String} transport name\n   * @return {Transport}\n   * @api private\n   */\n  createTransport(name) {\n\n\n    const query = clone(this.opts.query);\n\n    // append engine.io protocol identifier\n    query.EIO = parser.protocol;\n\n    // transport name\n    query.transport = name;\n\n    // session id if we already have one\n    if (this.id) query.sid = this.id;\n\n    const opts = Object.assign(\n      {},\n      this.opts.transportOptions[name],\n      this.opts,\n      {\n        query,\n        socket: this,\n        hostname: this.hostname,\n        secure: this.secure,\n        port: this.port\n      }\n    );\n\n\n\n\n    return new transports[name](opts);\n  }\n\n  /**\n   * Initializes transport to use and starts probe.\n   *\n   * @api private\n   */\n  open() {\n    let transport;\n    if (\n      this.opts.rememberUpgrade &&\n      Socket.priorWebsocketSuccess &&\n      this.transports.indexOf(\"websocket\") !== -1\n    ) {\n      transport = \"websocket\";\n    } else if (0 === this.transports.length) {\n      // Emit error on next tick so it can be listened to\n      const self = this;\n      setTimeout(function() {\n        self.emit(\"error\", \"No transports available\");\n      }, 0);\n      return;\n    } else {\n      transport = this.transports[0];\n    }\n    this.readyState = \"opening\";\n\n    // Retry with the next transport if the transport is disabled (jsonp: false)\n    try {\n      transport = this.createTransport(transport);\n    } catch (e) {\n\n\n      this.transports.shift();\n      this.open();\n      return;\n    }\n\n    transport.open();\n    this.setTransport(transport);\n  }\n\n  /**\n   * Sets the current transport. Disables the existing one (if any).\n   *\n   * @api private\n   */\n  setTransport(transport) {\n\n\n    const self = this;\n\n    if (this.transport) {\n\n\n      this.transport.removeAllListeners();\n    }\n\n    // set up transport\n    this.transport = transport;\n\n    // set up transport listeners\n    transport\n      .on(\"drain\", function() {\n        self.onDrain();\n      })\n      .on(\"packet\", function(packet) {\n        self.onPacket(packet);\n      })\n      .on(\"error\", function(e) {\n        self.onError(e);\n      })\n      .on(\"close\", function() {\n        self.onClose(\"transport close\");\n      });\n  }\n\n  /**\n   * Probes a transport.\n   *\n   * @param {String} transport name\n   * @api private\n   */\n  probe(name) {\n\n\n    let transport = this.createTransport(name, { probe: 1 });\n    let failed = false;\n    const self = this;\n\n    Socket.priorWebsocketSuccess = false;\n\n    function onTransportOpen() {\n      if (self.onlyBinaryUpgrades) {\n        const upgradeLosesBinary =\n          !this.supportsBinary && self.transport.supportsBinary;\n        failed = failed || upgradeLosesBinary;\n      }\n      if (failed) return;\n\n\n\n      transport.send([{ type: \"ping\", data: \"probe\" }]);\n      transport.once(\"packet\", function(msg) {\n        if (failed) return;\n        if (\"pong\" === msg.type && \"probe\" === msg.data) {\n\n\n          self.upgrading = true;\n          self.emit(\"upgrading\", transport);\n          if (!transport) return;\n          Socket.priorWebsocketSuccess = \"websocket\" === transport.name;\n\n\n\n          self.transport.pause(function() {\n            if (failed) return;\n            if (\"closed\" === self.readyState) return;\n\n\n\n            cleanup();\n\n            self.setTransport(transport);\n            transport.send([{ type: \"upgrade\" }]);\n            self.emit(\"upgrade\", transport);\n            transport = null;\n            self.upgrading = false;\n            self.flush();\n          });\n        } else {\n\n\n          const err = new Error(\"probe error\");\n          err.transport = transport.name;\n          self.emit(\"upgradeError\", err);\n        }\n      });\n    }\n\n    function freezeTransport() {\n      if (failed) return;\n\n      // Any callback called by transport should be ignored since now\n      failed = true;\n\n      cleanup();\n\n      transport.close();\n      transport = null;\n    }\n\n    // Handle any error that happens while probing\n    function onerror(err) {\n      const error = new Error(\"probe error: \" + err);\n      error.transport = transport.name;\n\n      freezeTransport();\n\n\n\n\n      self.emit(\"upgradeError\", error);\n    }\n\n    function onTransportClose() {\n      onerror(\"transport closed\");\n    }\n\n    // When the socket is closed while we're probing\n    function onclose() {\n      onerror(\"socket closed\");\n    }\n\n    // When the socket is upgraded while we're probing\n    function onupgrade(to) {\n      if (transport && to.name !== transport.name) {\n\n\n        freezeTransport();\n      }\n    }\n\n    // Remove all listeners on the transport and on self\n    function cleanup() {\n      transport.removeListener(\"open\", onTransportOpen);\n      transport.removeListener(\"error\", onerror);\n      transport.removeListener(\"close\", onTransportClose);\n      self.removeListener(\"close\", onclose);\n      self.removeListener(\"upgrading\", onupgrade);\n    }\n\n    transport.once(\"open\", onTransportOpen);\n    transport.once(\"error\", onerror);\n    transport.once(\"close\", onTransportClose);\n\n    this.once(\"close\", onclose);\n    this.once(\"upgrading\", onupgrade);\n\n    transport.open();\n  }\n\n  /**\n   * Called when connection is deemed open.\n   *\n   * @api public\n   */\n  onOpen() {\n\n\n    this.readyState = \"open\";\n    Socket.priorWebsocketSuccess = \"websocket\" === this.transport.name;\n    this.emit(\"open\");\n    this.flush();\n\n    // we check for `readyState` in case an `open`\n    // listener already closed the socket\n    if (\n      \"open\" === this.readyState &&\n      this.opts.upgrade &&\n      this.transport.pause\n    ) {\n\n\n      let i = 0;\n      const l = this.upgrades.length;\n      for (; i < l; i++) {\n        this.probe(this.upgrades[i]);\n      }\n    }\n  }\n\n  /**\n   * Handles a packet.\n   *\n   * @api private\n   */\n  onPacket(packet) {\n    if (\n      \"opening\" === this.readyState ||\n      \"open\" === this.readyState ||\n      \"closing\" === this.readyState\n    ) {\n\n\n\n      this.emit(\"packet\", packet);\n\n      // Socket is live - any packet counts\n      this.emit(\"heartbeat\");\n\n      switch (packet.type) {\n        case \"open\":\n          this.onHandshake(JSON.parse(packet.data));\n          break;\n\n        case \"ping\":\n          this.resetPingTimeout();\n          this.sendPacket(\"pong\");\n          this.emit(\"pong\");\n          break;\n\n        case \"error\":\n          const err = new Error(\"server error\");\n          err.code = packet.data;\n          this.onError(err);\n          break;\n\n        case \"message\":\n          this.emit(\"data\", packet.data);\n          this.emit(\"message\", packet.data);\n          break;\n      }\n    } else {\n\n\n    }\n  }\n\n  /**\n   * Called upon handshake completion.\n   *\n   * @param {Object} handshake obj\n   * @api private\n   */\n  onHandshake(data) {\n    this.emit(\"handshake\", data);\n    this.id = data.sid;\n    this.transport.query.sid = data.sid;\n    this.upgrades = this.filterUpgrades(data.upgrades);\n    this.pingInterval = data.pingInterval;\n    this.pingTimeout = data.pingTimeout;\n    this.onOpen();\n    // In case open handler closes socket\n    if (\"closed\" === this.readyState) return;\n    this.resetPingTimeout();\n  }\n\n  /**\n   * Sets and resets ping timeout timer based on server pings.\n   *\n   * @api private\n   */\n  resetPingTimeout() {\n    clearTimeout(this.pingTimeoutTimer);\n    this.pingTimeoutTimer = setTimeout(() => {\n      this.onClose(\"ping timeout\");\n    }, this.pingInterval + this.pingTimeout);\n  }\n\n  /**\n   * Called on `drain` event\n   *\n   * @api private\n   */\n  onDrain() {\n    this.writeBuffer.splice(0, this.prevBufferLen);\n\n    // setting prevBufferLen = 0 is very important\n    // for example, when upgrading, upgrade packet is sent over,\n    // and a nonzero prevBufferLen could cause problems on `drain`\n    this.prevBufferLen = 0;\n\n    if (0 === this.writeBuffer.length) {\n      this.emit(\"drain\");\n    } else {\n      this.flush();\n    }\n  }\n\n  /**\n   * Flush write buffers.\n   *\n   * @api private\n   */\n  flush() {\n    if (\n      \"closed\" !== this.readyState &&\n      this.transport.writable &&\n      !this.upgrading &&\n      this.writeBuffer.length\n    ) {\n\n\n      this.transport.send(this.writeBuffer);\n      // keep track of current length of writeBuffer\n      // splice writeBuffer and callbackBuffer on `drain`\n      this.prevBufferLen = this.writeBuffer.length;\n      this.emit(\"flush\");\n    }\n  }\n\n  /**\n   * Sends a message.\n   *\n   * @param {String} message.\n   * @param {Function} callback function.\n   * @param {Object} options.\n   * @return {Socket} for chaining.\n   * @api public\n   */\n  write(msg, options, fn) {\n    this.sendPacket(\"message\", msg, options, fn);\n    return this;\n  }\n\n  send(msg, options, fn) {\n    this.sendPacket(\"message\", msg, options, fn);\n    return this;\n  }\n\n  /**\n   * Sends a packet.\n   *\n   * @param {String} packet type.\n   * @param {String} data.\n   * @param {Object} options.\n   * @param {Function} callback function.\n   * @api private\n   */\n  sendPacket(type, data, options, fn) {\n    if (\"function\" === typeof data) {\n      fn = data;\n      data = undefined;\n    }\n\n    if (\"function\" === typeof options) {\n      fn = options;\n      options = null;\n    }\n\n    if (\"closing\" === this.readyState || \"closed\" === this.readyState) {\n      return;\n    }\n\n    options = options || {};\n    options.compress = false !== options.compress;\n\n    const packet = {\n      type: type,\n      data: data,\n      options: options\n    };\n    this.emit(\"packetCreate\", packet);\n    this.writeBuffer.push(packet);\n    if (fn) this.once(\"flush\", fn);\n    this.flush();\n  }\n\n  /**\n   * Closes the connection.\n   *\n   * @api private\n   */\n  close() {\n    const self = this;\n\n    if (\"opening\" === this.readyState || \"open\" === this.readyState) {\n      this.readyState = \"closing\";\n\n      if (this.writeBuffer.length) {\n        this.once(\"drain\", function() {\n          if (this.upgrading) {\n            waitForUpgrade();\n          } else {\n            close();\n          }\n        });\n      } else if (this.upgrading) {\n        waitForUpgrade();\n      } else {\n        close();\n      }\n    }\n\n    function close() {\n      self.onClose(\"forced close\");\n\n\n      self.transport.close();\n    }\n\n    function cleanupAndClose() {\n      self.removeListener(\"upgrade\", cleanupAndClose);\n      self.removeListener(\"upgradeError\", cleanupAndClose);\n      close();\n    }\n\n    function waitForUpgrade() {\n      // wait for upgrade to finish since we can't send packets while pausing a transport\n      self.once(\"upgrade\", cleanupAndClose);\n      self.once(\"upgradeError\", cleanupAndClose);\n    }\n\n    return this;\n  }\n\n  /**\n   * Called upon transport error\n   *\n   * @api private\n   */\n  onError(err) {\n\n\n    Socket.priorWebsocketSuccess = false;\n    this.emit(\"error\", err);\n    this.onClose(\"transport error\", err);\n  }\n\n  /**\n   * Called upon transport close.\n   *\n   * @api private\n   */\n  onClose(reason, desc) {\n    if (\n      \"opening\" === this.readyState ||\n      \"open\" === this.readyState ||\n      \"closing\" === this.readyState\n    ) {\n\n\n      const self = this;\n\n      // clear timers\n      clearTimeout(this.pingIntervalTimer);\n      clearTimeout(this.pingTimeoutTimer);\n\n      // stop event from firing again for transport\n      this.transport.removeAllListeners(\"close\");\n\n      // ensure transport won't stay open\n      this.transport.close();\n\n      // ignore further transport communication\n      this.transport.removeAllListeners();\n\n      // set ready state\n      this.readyState = \"closed\";\n\n      // clear session id\n      this.id = null;\n\n      // emit close event\n      this.emit(\"close\", reason, desc);\n\n      // clean buffers after, so users can still\n      // grab the buffers on `close` event\n      self.writeBuffer = [];\n      self.prevBufferLen = 0;\n    }\n  }\n\n  /**\n   * Filters upgrades, returning only those matching client transports.\n   *\n   * @param {Array} server upgrades\n   * @api private\n   *\n   */\n  filterUpgrades(upgrades) {\n    const filteredUpgrades = [];\n    let i = 0;\n    const j = upgrades.length;\n    for (; i < j; i++) {\n      if (~this.transports.indexOf(upgrades[i]))\n        filteredUpgrades.push(upgrades[i]);\n    }\n    return filteredUpgrades;\n  }\n}\n\nSocket.priorWebsocketSuccess = false;\n\n/**\n * Protocol version.\n *\n * @api public\n */\n\nSocket.protocol = parser.protocol; // this is an int\n\nfunction clone(obj) {\n  const o = {};\n  for (let i in obj) {\n    if (obj.hasOwnProperty(i)) {\n      o[i] = obj[i];\n    }\n  }\n  return o;\n}\n\nmodule.exports = Socket;\n","\n/**\n * Module exports.\n *\n * Logic borrowed from Modernizr:\n *\n *   - https://github.com/Modernizr/Modernizr/blob/master/feature-detects/cors.js\n */\n\ntry {\n  module.exports = typeof XMLHttpRequest !== 'undefined' &&\n    'withCredentials' in new XMLHttpRequest();\n} catch (err) {\n  // if XMLHttp support is disabled in IE then it will throw\n  // when trying to create\n  module.exports = false;\n}\n","/* global attachEvent */\n\nconst XMLHttpRequest = require(\"xmlhttprequest-ssl\");\nconst Polling = require(\"./polling\");\nconst Emitter = require(\"component-emitter\");\nconst { pick } = require(\"../util\");\nconst globalThis = require(\"../globalThis\");\n\n\n\n\n/**\n * Empty function\n */\n\nfunction empty() {}\n\nconst hasXHR2 = (function() {\n  const xhr = new XMLHttpRequest({ xdomain: false });\n  return null != xhr.responseType;\n})();\n\nclass XHR extends Polling {\n  /**\n   * XHR Polling constructor.\n   *\n   * @param {Object} opts\n   * @api public\n   */\n  constructor(opts) {\n    super(opts);\n\n    if (typeof location !== \"undefined\") {\n      const isSSL = \"https:\" === location.protocol;\n      let port = location.port;\n\n      // some user agents have empty `location.port`\n      if (!port) {\n        port = isSSL ? 443 : 80;\n      }\n\n      this.xd =\n        (typeof location !== \"undefined\" &&\n          opts.hostname !== location.hostname) ||\n        port !== opts.port;\n      this.xs = opts.secure !== isSSL;\n    }\n    /**\n     * XHR supports binary\n     */\n    const forceBase64 = opts && opts.forceBase64;\n    this.supportsBinary = hasXHR2 && !forceBase64;\n  }\n\n  /**\n   * Creates a request.\n   *\n   * @param {String} method\n   * @api private\n   */\n  request(opts = {}) {\n    Object.assign(opts, { xd: this.xd, xs: this.xs }, this.opts);\n    return new Request(this.uri(), opts);\n  }\n\n  /**\n   * Sends data.\n   *\n   * @param {String} data to send.\n   * @param {Function} called upon flush.\n   * @api private\n   */\n  doWrite(data, fn) {\n    const req = this.request({\n      method: \"POST\",\n      data: data\n    });\n    const self = this;\n    req.on(\"success\", fn);\n    req.on(\"error\", function(err) {\n      self.onError(\"xhr post error\", err);\n    });\n  }\n\n  /**\n   * Starts a poll cycle.\n   *\n   * @api private\n   */\n  doPoll() {\n\n\n    const req = this.request();\n    const self = this;\n    req.on(\"data\", function(data) {\n      self.onData(data);\n    });\n    req.on(\"error\", function(err) {\n      self.onError(\"xhr poll error\", err);\n    });\n    this.pollXhr = req;\n  }\n}\n\nclass Request extends Emitter {\n  /**\n   * Request constructor\n   *\n   * @param {Object} options\n   * @api public\n   */\n  constructor(uri, opts) {\n    super();\n    this.opts = opts;\n\n    this.method = opts.method || \"GET\";\n    this.uri = uri;\n    this.async = false !== opts.async;\n    this.data = undefined !== opts.data ? opts.data : null;\n\n    this.create();\n  }\n\n  /**\n   * Creates the XHR object and sends the request.\n   *\n   * @api private\n   */\n  create() {\n    const opts = pick(\n      this.opts,\n      \"agent\",\n      \"enablesXDR\",\n      \"pfx\",\n      \"key\",\n      \"passphrase\",\n      \"cert\",\n      \"ca\",\n      \"ciphers\",\n      \"rejectUnauthorized\"\n    );\n    opts.xdomain = !!this.opts.xd;\n    opts.xscheme = !!this.opts.xs;\n\n    const xhr = (this.xhr = new XMLHttpRequest(opts));\n    const self = this;\n\n    try {\n\n\n      xhr.open(this.method, this.uri, this.async);\n      try {\n        if (this.opts.extraHeaders) {\n          xhr.setDisableHeaderCheck && xhr.setDisableHeaderCheck(true);\n          for (let i in this.opts.extraHeaders) {\n            if (this.opts.extraHeaders.hasOwnProperty(i)) {\n              xhr.setRequestHeader(i, this.opts.extraHeaders[i]);\n            }\n          }\n        }\n      } catch (e) {}\n\n      if (\"POST\" === this.method) {\n        try {\n          xhr.setRequestHeader(\"Content-type\", \"text/plain;charset=UTF-8\");\n        } catch (e) {}\n      }\n\n      try {\n        xhr.setRequestHeader(\"Accept\", \"*/*\");\n      } catch (e) {}\n\n      // ie6 check\n      if (\"withCredentials\" in xhr) {\n        xhr.withCredentials = this.opts.withCredentials;\n      }\n\n      if (this.opts.requestTimeout) {\n        xhr.timeout = this.opts.requestTimeout;\n      }\n\n      if (this.hasXDR()) {\n        xhr.onload = function() {\n          self.onLoad();\n        };\n        xhr.onerror = function() {\n          self.onError(xhr.responseText);\n        };\n      } else {\n        xhr.onreadystatechange = function() {\n          if (4 !== xhr.readyState) return;\n          if (200 === xhr.status || 1223 === xhr.status) {\n            self.onLoad();\n          } else {\n            // make sure the `error` event handler that's user-set\n            // does not throw in the same tick and gets caught here\n            setTimeout(function() {\n              self.onError(typeof xhr.status === \"number\" ? xhr.status : 0);\n            }, 0);\n          }\n        };\n      }\n\n\n\n      xhr.send(this.data);\n    } catch (e) {\n      // Need to defer since .create() is called directly from the constructor\n      // and thus the 'error' event can only be only bound *after* this exception\n      // occurs.  Therefore, also, we cannot throw here at all.\n      setTimeout(function() {\n        self.onError(e);\n      }, 0);\n      return;\n    }\n\n    if (typeof document !== \"undefined\") {\n      this.index = Request.requestsCount++;\n      Request.requests[this.index] = this;\n    }\n  }\n\n  /**\n   * Called upon successful response.\n   *\n   * @api private\n   */\n  onSuccess() {\n    this.emit(\"success\");\n    this.cleanup();\n  }\n\n  /**\n   * Called if we have data.\n   *\n   * @api private\n   */\n  onData(data) {\n    this.emit(\"data\", data);\n    this.onSuccess();\n  }\n\n  /**\n   * Called upon error.\n   *\n   * @api private\n   */\n  onError(err) {\n    this.emit(\"error\", err);\n    this.cleanup(true);\n  }\n\n  /**\n   * Cleans up house.\n   *\n   * @api private\n   */\n  cleanup(fromError) {\n    if (\"undefined\" === typeof this.xhr || null === this.xhr) {\n      return;\n    }\n    // xmlhttprequest\n    if (this.hasXDR()) {\n      this.xhr.onload = this.xhr.onerror = empty;\n    } else {\n      this.xhr.onreadystatechange = empty;\n    }\n\n    if (fromError) {\n      try {\n        this.xhr.abort();\n      } catch (e) {}\n    }\n\n    if (typeof document !== \"undefined\") {\n      delete Request.requests[this.index];\n    }\n\n    this.xhr = null;\n  }\n\n  /**\n   * Called upon load.\n   *\n   * @api private\n   */\n  onLoad() {\n    const data = this.xhr.responseText;\n    if (data !== null) {\n      this.onData(data);\n    }\n  }\n\n  /**\n   * Check if it has XDomainRequest.\n   *\n   * @api private\n   */\n  hasXDR() {\n    return typeof XDomainRequest !== \"undefined\" && !this.xs && this.enablesXDR;\n  }\n\n  /**\n   * Aborts the request.\n   *\n   * @api public\n   */\n  abort() {\n    this.cleanup();\n  }\n}\n\n/**\n * Aborts pending requests when unloading the window. This is needed to prevent\n * memory leaks (e.g. when using IE) and to ensure that no spurious error is\n * emitted.\n */\n\nRequest.requestsCount = 0;\nRequest.requests = {};\n\nif (typeof document !== \"undefined\") {\n  if (typeof attachEvent === \"function\") {\n    attachEvent(\"onunload\", unloadHandler);\n  } else if (typeof addEventListener === \"function\") {\n    const terminationEvent = \"onpagehide\" in globalThis ? \"pagehide\" : \"unload\";\n    addEventListener(terminationEvent, unloadHandler, false);\n  }\n}\n\nfunction unloadHandler() {\n  for (let i in Request.requests) {\n    if (Request.requests.hasOwnProperty(i)) {\n      Request.requests[i].abort();\n    }\n  }\n}\n\nmodule.exports = XHR;\nmodule.exports.Request = Request;\n","const { PACKET_TYPES } = require(\"./commons\");\n\nconst withNativeBlob =\n  typeof Blob === \"function\" ||\n  (typeof Blob !== \"undefined\" &&\n    Object.prototype.toString.call(Blob) === \"[object BlobConstructor]\");\nconst withNativeArrayBuffer = typeof ArrayBuffer === \"function\";\n\n// ArrayBuffer.isView method is not defined in IE10\nconst isView = obj => {\n  return typeof ArrayBuffer.isView === \"function\"\n    ? ArrayBuffer.isView(obj)\n    : obj && obj.buffer instanceof ArrayBuffer;\n};\n\nconst encodePacket = ({ type, data }, supportsBinary, callback) => {\n  if (withNativeBlob && data instanceof Blob) {\n    if (supportsBinary) {\n      return callback(data);\n    } else {\n      return encodeBlobAsBase64(data, callback);\n    }\n  } else if (\n    withNativeArrayBuffer &&\n    (data instanceof ArrayBuffer || isView(data))\n  ) {\n    if (supportsBinary) {\n      return callback(data instanceof ArrayBuffer ? data : data.buffer);\n    } else {\n      return encodeBlobAsBase64(new Blob([data]), callback);\n    }\n  }\n  // plain string\n  return callback(PACKET_TYPES[type] + (data || \"\"));\n};\n\nconst encodeBlobAsBase64 = (data, callback) => {\n  const fileReader = new FileReader();\n  fileReader.onload = function() {\n    const content = fileReader.result.split(\",\")[1];\n    callback(\"b\" + content);\n  };\n  return fileReader.readAsDataURL(data);\n};\n\nmodule.exports = encodePacket;\n","const { PACKET_TYPES_REVERSE, ERROR_PACKET } = require(\"./commons\");\n\nconst withNativeArrayBuffer = typeof ArrayBuffer === \"function\";\n\nlet base64decoder;\nif (withNativeArrayBuffer) {\n  base64decoder = require(\"base64-arraybuffer\");\n}\n\nconst decodePacket = (encodedPacket, binaryType) => {\n  if (typeof encodedPacket !== \"string\") {\n    return {\n      type: \"message\",\n      data: mapBinary(encodedPacket, binaryType)\n    };\n  }\n  const type = encodedPacket.charAt(0);\n  if (type === \"b\") {\n    return {\n      type: \"message\",\n      data: decodeBase64Packet(encodedPacket.substring(1), binaryType)\n    };\n  }\n  const packetType = PACKET_TYPES_REVERSE[type];\n  if (!packetType) {\n    return ERROR_PACKET;\n  }\n  return encodedPacket.length > 1\n    ? {\n        type: PACKET_TYPES_REVERSE[type],\n        data: encodedPacket.substring(1)\n      }\n    : {\n        type: PACKET_TYPES_REVERSE[type]\n      };\n};\n\nconst decodeBase64Packet = (data, binaryType) => {\n  if (base64decoder) {\n    const decoded = base64decoder.decode(data);\n    return mapBinary(decoded, binaryType);\n  } else {\n    return { base64: true, data }; // fallback for old browsers\n  }\n};\n\nconst mapBinary = (data, binaryType) => {\n  switch (binaryType) {\n    case \"blob\":\n      return data instanceof ArrayBuffer ? new Blob([data]) : data;\n    case \"arraybuffer\":\n    default:\n      return data; // assuming the data is already an ArrayBuffer\n  }\n};\n\nmodule.exports = decodePacket;\n","/*\n * base64-arraybuffer\n * https://github.com/niklasvh/base64-arraybuffer\n *\n * Copyright (c) 2012 Niklas von Hertzen\n * Licensed under the MIT license.\n */\n(function(chars){\n  \"use strict\";\n\n  exports.encode = function(arraybuffer) {\n    var bytes = new Uint8Array(arraybuffer),\n    i, len = bytes.length, base64 = \"\";\n\n    for (i = 0; i < len; i+=3) {\n      base64 += chars[bytes[i] >> 2];\n      base64 += chars[((bytes[i] & 3) << 4) | (bytes[i + 1] >> 4)];\n      base64 += chars[((bytes[i + 1] & 15) << 2) | (bytes[i + 2] >> 6)];\n      base64 += chars[bytes[i + 2] & 63];\n    }\n\n    if ((len % 3) === 2) {\n      base64 = base64.substring(0, base64.length - 1) + \"=\";\n    } else if (len % 3 === 1) {\n      base64 = base64.substring(0, base64.length - 2) + \"==\";\n    }\n\n    return base64;\n  };\n\n  exports.decode =  function(base64) {\n    var bufferLength = base64.length * 0.75,\n    len = base64.length, i, p = 0,\n    encoded1, encoded2, encoded3, encoded4;\n\n    if (base64[base64.length - 1] === \"=\") {\n      bufferLength--;\n      if (base64[base64.length - 2] === \"=\") {\n        bufferLength--;\n      }\n    }\n\n    var arraybuffer = new ArrayBuffer(bufferLength),\n    bytes = new Uint8Array(arraybuffer);\n\n    for (i = 0; i < len; i+=4) {\n      encoded1 = chars.indexOf(base64[i]);\n      encoded2 = chars.indexOf(base64[i+1]);\n      encoded3 = chars.indexOf(base64[i+2]);\n      encoded4 = chars.indexOf(base64[i+3]);\n\n      bytes[p++] = (encoded1 << 2) | (encoded2 >> 4);\n      bytes[p++] = ((encoded2 & 15) << 4) | (encoded3 >> 2);\n      bytes[p++] = ((encoded3 & 3) << 6) | (encoded4 & 63);\n    }\n\n    return arraybuffer;\n  };\n})(\"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/\");\n","const Polling = require(\"./polling\");\nconst globalThis = require(\"../globalThis\");\n\nconst rNewline = /\\n/g;\nconst rEscapedNewline = /\\\\n/g;\n\n/**\n * Global JSONP callbacks.\n */\n\nlet callbacks;\n\nclass JSONPPolling extends Polling {\n  /**\n   * JSONP Polling constructor.\n   *\n   * @param {Object} opts.\n   * @api public\n   */\n  constructor(opts) {\n    super(opts);\n\n    this.query = this.query || {};\n\n    // define global callbacks array if not present\n    // we do this here (lazily) to avoid unneeded global pollution\n    if (!callbacks) {\n      // we need to consider multiple engines in the same page\n      callbacks = globalThis.___eio = globalThis.___eio || [];\n    }\n\n    // callback identifier\n    this.index = callbacks.length;\n\n    // add callback to jsonp global\n    const self = this;\n    callbacks.push(function(msg) {\n      self.onData(msg);\n    });\n\n    // append to query string\n    this.query.j = this.index;\n  }\n\n  /**\n   * JSONP only supports binary as base64 encoded strings\n   */\n  get supportsBinary() {\n    return false;\n  }\n\n  /**\n   * Closes the socket.\n   *\n   * @api private\n   */\n  doClose() {\n    if (this.script) {\n      // prevent spurious errors from being emitted when the window is unloaded\n      this.script.onerror = () => {};\n      this.script.parentNode.removeChild(this.script);\n      this.script = null;\n    }\n\n    if (this.form) {\n      this.form.parentNode.removeChild(this.form);\n      this.form = null;\n      this.iframe = null;\n    }\n\n    super.doClose();\n  }\n\n  /**\n   * Starts a poll cycle.\n   *\n   * @api private\n   */\n  doPoll() {\n    const self = this;\n    const script = document.createElement(\"script\");\n\n    if (this.script) {\n      this.script.parentNode.removeChild(this.script);\n      this.script = null;\n    }\n\n    script.async = true;\n    script.src = this.uri();\n    script.onerror = function(e) {\n      self.onError(\"jsonp poll error\", e);\n    };\n\n    const insertAt = document.getElementsByTagName(\"script\")[0];\n    if (insertAt) {\n      insertAt.parentNode.insertBefore(script, insertAt);\n    } else {\n      (document.head || document.body).appendChild(script);\n    }\n    this.script = script;\n\n    const isUAgecko =\n      \"undefined\" !== typeof navigator && /gecko/i.test(navigator.userAgent);\n\n    if (isUAgecko) {\n      setTimeout(function() {\n        const iframe = document.createElement(\"iframe\");\n        document.body.appendChild(iframe);\n        document.body.removeChild(iframe);\n      }, 100);\n    }\n  }\n\n  /**\n   * Writes with a hidden iframe.\n   *\n   * @param {String} data to send\n   * @param {Function} called upon flush.\n   * @api private\n   */\n  doWrite(data, fn) {\n    const self = this;\n    let iframe;\n\n    if (!this.form) {\n      const form = document.createElement(\"form\");\n      const area = document.createElement(\"textarea\");\n      const id = (this.iframeId = \"eio_iframe_\" + this.index);\n\n      form.className = \"socketio\";\n      form.style.position = \"absolute\";\n      form.style.top = \"-1000px\";\n      form.style.left = \"-1000px\";\n      form.target = id;\n      form.method = \"POST\";\n      form.setAttribute(\"accept-charset\", \"utf-8\");\n      area.name = \"d\";\n      form.appendChild(area);\n      document.body.appendChild(form);\n\n      this.form = form;\n      this.area = area;\n    }\n\n    this.form.action = this.uri();\n\n    function complete() {\n      initIframe();\n      fn();\n    }\n\n    function initIframe() {\n      if (self.iframe) {\n        try {\n          self.form.removeChild(self.iframe);\n        } catch (e) {\n          self.onError(\"jsonp polling iframe removal error\", e);\n        }\n      }\n\n      try {\n        // ie6 dynamic iframes with target=\"\" support (thanks Chris Lambacher)\n        const html = '<iframe src=\"javascript:0\" name=\"' + self.iframeId + '\">';\n        iframe = document.createElement(html);\n      } catch (e) {\n        iframe = document.createElement(\"iframe\");\n        iframe.name = self.iframeId;\n        iframe.src = \"javascript:0\";\n      }\n\n      iframe.id = self.iframeId;\n\n      self.form.appendChild(iframe);\n      self.iframe = iframe;\n    }\n\n    initIframe();\n\n    // escape \\n to prevent it from being converted into \\r\\n by some UAs\n    // double escaping is required for escaped new lines because unescaping of new lines can be done safely on server-side\n    data = data.replace(rEscapedNewline, \"\\\\\\n\");\n    this.area.value = data.replace(rNewline, \"\\\\n\");\n\n    try {\n      this.form.submit();\n    } catch (e) {}\n\n    if (this.iframe.attachEvent) {\n      this.iframe.onreadystatechange = function() {\n        if (self.iframe.readyState === \"complete\") {\n          complete();\n        }\n      };\n    } else {\n      this.iframe.onload = complete;\n    }\n  }\n}\n\nmodule.exports = JSONPPolling;\n","const Transport = require(\"../transport\");\nconst parser = require(\"engine.io-parser\");\nconst parseqs = require(\"parseqs\");\nconst yeast = require(\"yeast\");\nconst { pick } = require(\"../util\");\nconst {\n  WebSocket,\n  usingBrowserWebSocket,\n  defaultBinaryType\n} = require(\"./websocket-constructor\");\n\n\n\n\n// detect ReactNative environment\nconst isReactNative =\n  typeof navigator !== \"undefined\" &&\n  typeof navigator.product === \"string\" &&\n  navigator.product.toLowerCase() === \"reactnative\";\n\nclass WS extends Transport {\n  /**\n   * WebSocket transport constructor.\n   *\n   * @api {Object} connection options\n   * @api public\n   */\n  constructor(opts) {\n    super(opts);\n\n    this.supportsBinary = !opts.forceBase64;\n  }\n\n  /**\n   * Transport name.\n   *\n   * @api public\n   */\n  get name() {\n    return \"websocket\";\n  }\n\n  /**\n   * Opens socket.\n   *\n   * @api private\n   */\n  doOpen() {\n    if (!this.check()) {\n      // let probe timeout\n      return;\n    }\n\n    const uri = this.uri();\n    const protocols = this.opts.protocols;\n\n    // React Native only supports the 'headers' option, and will print a warning if anything else is passed\n    const opts = isReactNative\n      ? {}\n      : pick(\n          this.opts,\n          \"agent\",\n          \"perMessageDeflate\",\n          \"pfx\",\n          \"key\",\n          \"passphrase\",\n          \"cert\",\n          \"ca\",\n          \"ciphers\",\n          \"rejectUnauthorized\",\n          \"localAddress\",\n          \"protocolVersion\",\n          \"origin\",\n          \"maxPayload\",\n          \"family\",\n          \"checkServerIdentity\"\n        );\n\n    if (this.opts.extraHeaders) {\n      opts.headers = this.opts.extraHeaders;\n    }\n\n    try {\n      this.ws =\n        usingBrowserWebSocket && !isReactNative\n          ? protocols\n            ? new WebSocket(uri, protocols)\n            : new WebSocket(uri)\n          : new WebSocket(uri, protocols, opts);\n    } catch (err) {\n      return this.emit(\"error\", err);\n    }\n\n    this.ws.binaryType = this.socket.binaryType || defaultBinaryType;\n\n    this.addEventListeners();\n  }\n\n  /**\n   * Adds event listeners to the socket\n   *\n   * @api private\n   */\n  addEventListeners() {\n    const self = this;\n\n    this.ws.onopen = function() {\n      self.onOpen();\n    };\n    this.ws.onclose = function() {\n      self.onClose();\n    };\n    this.ws.onmessage = function(ev) {\n      self.onData(ev.data);\n    };\n    this.ws.onerror = function(e) {\n      self.onError(\"websocket error\", e);\n    };\n  }\n\n  /**\n   * Writes data to socket.\n   *\n   * @param {Array} array of packets.\n   * @api private\n   */\n  write(packets) {\n    const self = this;\n    this.writable = false;\n\n    // encodePacket efficient as it uses WS framing\n    // no need for encodePayload\n    let total = packets.length;\n    let i = 0;\n    const l = total;\n    for (; i < l; i++) {\n      (function(packet) {\n        parser.encodePacket(packet, self.supportsBinary, function(data) {\n          // always create a new object (GH-437)\n          const opts = {};\n          if (!usingBrowserWebSocket) {\n            if (packet.options) {\n              opts.compress = packet.options.compress;\n            }\n\n            if (self.opts.perMessageDeflate) {\n              const len =\n                \"string\" === typeof data\n                  ? Buffer.byteLength(data)\n                  : data.length;\n              if (len < self.opts.perMessageDeflate.threshold) {\n                opts.compress = false;\n              }\n            }\n          }\n\n          // Sometimes the websocket has already been closed but the browser didn't\n          // have a chance of informing us about it yet, in that case send will\n          // throw an error\n          try {\n            if (usingBrowserWebSocket) {\n              // TypeError is thrown when passing the second argument on Safari\n              self.ws.send(data);\n            } else {\n              self.ws.send(data, opts);\n            }\n          } catch (e) {\n\n\n          }\n\n          --total || done();\n        });\n      })(packets[i]);\n    }\n\n    function done() {\n      self.emit(\"flush\");\n\n      // fake drain\n      // defer to next tick to allow Socket to clear writeBuffer\n      setTimeout(function() {\n        self.writable = true;\n        self.emit(\"drain\");\n      }, 0);\n    }\n  }\n\n  /**\n   * Called upon close\n   *\n   * @api private\n   */\n  onClose() {\n    Transport.prototype.onClose.call(this);\n  }\n\n  /**\n   * Closes socket.\n   *\n   * @api private\n   */\n  doClose() {\n    if (typeof this.ws !== \"undefined\") {\n      this.ws.close();\n      this.ws = null;\n    }\n  }\n\n  /**\n   * Generates uri for connection.\n   *\n   * @api private\n   */\n  uri() {\n    let query = this.query || {};\n    const schema = this.opts.secure ? \"wss\" : \"ws\";\n    let port = \"\";\n\n    // avoid port if default for schema\n    if (\n      this.opts.port &&\n      ((\"wss\" === schema && Number(this.opts.port) !== 443) ||\n        (\"ws\" === schema && Number(this.opts.port) !== 80))\n    ) {\n      port = \":\" + this.opts.port;\n    }\n\n    // append timestamp to URI\n    if (this.opts.timestampRequests) {\n      query[this.opts.timestampParam] = yeast();\n    }\n\n    // communicate binary support capabilities\n    if (!this.supportsBinary) {\n      query.b64 = 1;\n    }\n\n    query = parseqs.encode(query);\n\n    // prepend ? to query\n    if (query.length) {\n      query = \"?\" + query;\n    }\n\n    const ipv6 = this.opts.hostname.indexOf(\":\") !== -1;\n    return (\n      schema +\n      \"://\" +\n      (ipv6 ? \"[\" + this.opts.hostname + \"]\" : this.opts.hostname) +\n      port +\n      this.opts.path +\n      query\n    );\n  }\n\n  /**\n   * Feature detection for WebSocket.\n   *\n   * @return {Boolean} whether this transport is available.\n   * @api public\n   */\n  check() {\n    return (\n      !!WebSocket &&\n      !(\"__initialize\" in WebSocket && this.name === WS.prototype.name)\n    );\n  }\n}\n\nmodule.exports = WS;\n","const globalThis = require(\"../globalThis\");\n\nmodule.exports = {\n  WebSocket: globalThis.WebSocket || globalThis.MozWebSocket,\n  usingBrowserWebSocket: true,\n  defaultBinaryType: \"arraybuffer\"\n};\n","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.reconstructPacket = exports.deconstructPacket = void 0;\nconst is_binary_1 = require(\"./is-binary\");\n/**\n * Replaces every Buffer | ArrayBuffer | Blob | File in packet with a numbered placeholder.\n *\n * @param {Object} packet - socket.io event packet\n * @return {Object} with deconstructed packet and list of buffers\n * @public\n */\nfunction deconstructPacket(packet) {\n    const buffers = [];\n    const packetData = packet.data;\n    const pack = packet;\n    pack.data = _deconstructPacket(packetData, buffers);\n    pack.attachments = buffers.length; // number of binary 'attachments'\n    return { packet: pack, buffers: buffers };\n}\nexports.deconstructPacket = deconstructPacket;\nfunction _deconstructPacket(data, buffers) {\n    if (!data)\n        return data;\n    if (is_binary_1.isBinary(data)) {\n        const placeholder = { _placeholder: true, num: buffers.length };\n        buffers.push(data);\n        return placeholder;\n    }\n    else if (Array.isArray(data)) {\n        const newData = new Array(data.length);\n        for (let i = 0; i < data.length; i++) {\n            newData[i] = _deconstructPacket(data[i], buffers);\n        }\n        return newData;\n    }\n    else if (typeof data === \"object\" && !(data instanceof Date)) {\n        const newData = {};\n        for (const key in data) {\n            if (data.hasOwnProperty(key)) {\n                newData[key] = _deconstructPacket(data[key], buffers);\n            }\n        }\n        return newData;\n    }\n    return data;\n}\n/**\n * Reconstructs a binary packet from its placeholder packet and buffers\n *\n * @param {Object} packet - event packet with placeholders\n * @param {Array} buffers - binary buffers to put in placeholder positions\n * @return {Object} reconstructed packet\n * @public\n */\nfunction reconstructPacket(packet, buffers) {\n    packet.data = _reconstructPacket(packet.data, buffers);\n    packet.attachments = undefined; // no longer useful\n    return packet;\n}\nexports.reconstructPacket = reconstructPacket;\nfunction _reconstructPacket(data, buffers) {\n    if (!data)\n        return data;\n    if (data && data._placeholder) {\n        return buffers[data.num]; // appropriate buffer (should be natural order anyway)\n    }\n    else if (Array.isArray(data)) {\n        for (let i = 0; i < data.length; i++) {\n            data[i] = _reconstructPacket(data[i], buffers);\n        }\n    }\n    else if (typeof data === \"object\") {\n        for (const key in data) {\n            if (data.hasOwnProperty(key)) {\n                data[key] = _reconstructPacket(data[key], buffers);\n            }\n        }\n    }\n    return data;\n}\n","\n/**\n * Expose `Backoff`.\n */\n\nmodule.exports = Backoff;\n\n/**\n * Initialize backoff timer with `opts`.\n *\n * - `min` initial timeout in milliseconds [100]\n * - `max` max timeout [10000]\n * - `jitter` [0]\n * - `factor` [2]\n *\n * @param {Object} opts\n * @api public\n */\n\nfunction Backoff(opts) {\n  opts = opts || {};\n  this.ms = opts.min || 100;\n  this.max = opts.max || 10000;\n  this.factor = opts.factor || 2;\n  this.jitter = opts.jitter > 0 && opts.jitter <= 1 ? opts.jitter : 0;\n  this.attempts = 0;\n}\n\n/**\n * Return the backoff duration.\n *\n * @return {Number}\n * @api public\n */\n\nBackoff.prototype.duration = function(){\n  var ms = this.ms * Math.pow(this.factor, this.attempts++);\n  if (this.jitter) {\n    var rand =  Math.random();\n    var deviation = Math.floor(rand * this.jitter * ms);\n    ms = (Math.floor(rand * 10) & 1) == 0  ? ms - deviation : ms + deviation;\n  }\n  return Math.min(ms, this.max) | 0;\n};\n\n/**\n * Reset the number of attempts.\n *\n * @api public\n */\n\nBackoff.prototype.reset = function(){\n  this.attempts = 0;\n};\n\n/**\n * Set the minimum duration\n *\n * @api public\n */\n\nBackoff.prototype.setMin = function(min){\n  this.ms = min;\n};\n\n/**\n * Set the maximum duration\n *\n * @api public\n */\n\nBackoff.prototype.setMax = function(max){\n  this.max = max;\n};\n\n/**\n * Set the jitter\n *\n * @api public\n */\n\nBackoff.prototype.setJitter = function(jitter){\n  this.jitter = jitter;\n};\n\n"],"sourceRoot":""}
Index: trip-planner-front/node_modules/socket.io/client-dist/socket.io.msgpack.min.js
===================================================================
--- trip-planner-front/node_modules/socket.io/client-dist/socket.io.msgpack.min.js	(revision 571e0df9a7a5e798c9941a85842f785177bedbbd)
+++ trip-planner-front/node_modules/socket.io/client-dist/socket.io.msgpack.min.js	(revision 6a3a178323fd905112b5392bd9d3cb83b66ef2d3)
@@ -1,7 +1,7 @@
 /*!
- * Socket.IO v4.4.0
+ * Socket.IO v3.1.2
  * (c) 2014-2021 Guillermo Rauch
  * Released under the MIT License.
  */
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t=this,e=this.request();e.on("data",this.onData.bind(this)),e.on("error",(function(e){t.onError("xhr poll error",e)})),this.pollXhr=e}}]),r}(Z),rt=function(t){s(r,t);var e=f(r);function r(t,i){var o;return n(this,r),O(h(o=e.call(this)),i),o.opts=i,o.method=i.method||"GET",o.uri=t,o.async=!1!==i.async,o.data=void 0!==i.data?i.data:null,o.create(),o}return i(r,[{key:"create",value:function(){var t=this,e=w(this.opts,"agent","pfx","key","passphrase","cert","ca","ciphers","rejectUnauthorized","autoUnref");e.xdomain=!!this.opts.xd,e.xscheme=!!this.opts.xs;var n=this.xhr=new k(e);try{n.open(this.method,this.uri,this.async);try{if(this.opts.extraHeaders)for(var i in n.setDisableHeaderCheck&&n.setDisableHeaderCheck(!0),this.opts.extraHeaders)this.opts.extraHeaders.hasOwnProperty(i)&&n.setRequestHeader(i,this.opts.extraHeaders[i])}catch(t){}if("POST"===this.method)try{n.setRequestHeader("Content-type","text/plain;charset=UTF-8")}catch(t){}try{n.setRequestHeader("Accept","*/*")}catch(t){}"withCredentials"in n&&(n.withCredentials=this.opts.withCredentials),this.opts.requestTimeout&&(n.timeout=this.opts.requestTimeout),n.onreadystatechange=function(){4===n.readyState&&(200===n.status||1223===n.status?t.onLoad():t.setTimeoutFn((function(){t.onError("number"==typeof n.status?n.status:0)}),0))},n.send(this.data)}catch(e){return void this.setTimeoutFn((function(){t.onError(e)}),0)}"undefined"!=typeof document&&(this.index=r.requestsCount++,r.requests[this.index]=this)}},{key:"onSuccess",value:function(){this.emit("success"),this.cleanup()}},{key:"onData",value:function(t){this.emit("data",t),this.onSuccess()}},{key:"onError",value:function(t){this.emit("error",t),this.cleanup(!0)}},{key:"cleanup",value:function(t){if(void 0!==this.xhr&&null!==this.xhr){if(this.xhr.onreadystatechange=tt,t)try{this.xhr.abort()}catch(t){}"undefined"!=typeof document&&delete r.requests[this.index],this.xhr=null}}},{key:"onLoad",value:function(){var t=this.xhr.responseText;null!==t&&this.onData(t)}},{key:"abort",value:function(){this.cleanup()}}]),r}(T);if(rt.requestsCount=0,rt.requests={},"undefined"!=typeof document)if("function"==typeof attachEvent)attachEvent("onunload",it);else if("function"==typeof addEventListener){addEventListener("onpagehide"in b?"pagehide":"unload",it,!1)}function it(){for(var t in rt.requests)rt.requests.hasOwnProperty(t)&&rt.requests[t].abort()}var ot="function"==typeof Promise&&"function"==typeof Promise.resolve?function(t){return Promise.resolve().then(t)}:function(t,e){return e(t,0)},st=b.WebSocket||b.MozWebSocket,at="undefined"!=typeof navigator&&"string"==typeof navigator.product&&"reactnative"===navigator.product.toLowerCase(),ct=function(t){s(r,t);var e=f(r);function r(t){var i;return n(this,r),(i=e.call(this,t)).supportsBinary=!t.forceBase64,i}return i(r,[{key:"name",get:function(){return"websocket"}},{key:"doOpen",value:function(){if(this.check()){var t=this.uri(),e=this.opts.protocols,n=at?{}:w(this.opts,"agent","perMessageDeflate","pfx","key","passphrase","cert","ca","ciphers","rejectUnauthorized","localAddress","protocolVersion","origin","maxPayload","family","checkServerIdentity");this.opts.extraHeaders&&(n.headers=this.opts.extraHeaders);try{this.ws=at?new st(t,e,n):e?new st(t,e):new st(t)}catch(t){return this.emit("error",t)}this.ws.binaryType=this.socket.binaryType||"arraybuffer",this.addEventListeners()}}},{key:"addEventListeners",value:function(){var t=this;this.ws.onopen=function(){t.opts.autoUnref&&t.ws._socket.unref(),t.onOpen()},this.ws.onclose=this.onClose.bind(this),this.ws.onmessage=function(e){return t.onData(e.data)},this.ws.onerror=function(e){return t.onError("websocket error",e)}}},{key:"write",value:function(t){var e=this;this.writable=!1;for(var n=function(n){var r=t[n],i=n===t.length-1;B(r,e.supportsBinary,(function(t){try{e.ws.send(t)}catch(t){}i&&ot((function(){e.writable=!0,e.emit("drain")}),e.setTimeoutFn)}))},r=0;r<t.length;r++)n(r)}},{key:"doClose",value:function(){void 0!==this.ws&&(this.ws.close(),this.ws=null)}},{key:"uri",value:function(){var t=this.query||{},e=this.opts.secure?"wss":"ws",n="";this.opts.port&&("wss"===e&&443!==Number(this.opts.port)||"ws"===e&&80!==Number(this.opts.port))&&(n=":"+this.opts.port),this.opts.timestampRequests&&(t[this.opts.timestampParam]=G()),this.supportsBinary||(t.b64=1);var r=Q.encode(t);return e+"://"+(-1!==this.opts.hostname.indexOf(":")?"["+this.opts.hostname+"]":this.opts.hostname)+n+this.opts.path+(r.length?"?"+r:"")}},{key:"check",value:function(){return!(!st||"__initialize"in st&&this.name===r.prototype.name)}}]),r}(z),ht={websocket:ct,polling:nt},ut=function(t){s(a,t);var r=f(a);function a(t){var i,s=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};return n(this,a),i=r.call(this),t&&"object"===e(t)&&(s=t,t=null),t?(t=g(t),s.hostname=t.host,s.secure="https"===t.protocol||"wss"===t.protocol,s.port=t.port,t.query&&(s.query=t.query)):s.host&&(s.hostname=g(s.host).host),O(h(i),s),i.secure=null!=s.secure?s.secure:"undefined"!=typeof location&&"https:"===location.protocol,s.hostname&&!s.port&&(s.port=i.secure?"443":"80"),i.hostname=s.hostname||("undefined"!=typeof location?location.hostname:"localhost"),i.port=s.port||("undefined"!=typeof location&&location.port?location.port:i.secure?"443":"80"),i.transports=s.transports||["polling","websocket"],i.readyState="",i.writeBuffer=[],i.prevBufferLen=0,i.opts=o({path:"/engine.io",agent:!1,withCredentials:!1,upgrade:!0,timestampParam:"t",rememberUpgrade:!1,rejectUnauthorized:!0,perMessageDeflate:{threshold:1024},transportOptions:{},closeOnBeforeunload:!0},s),i.opts.path=i.opts.path.replace(/\/$/,"")+"/","string"==typeof i.opts.query&&(i.opts.query=Q.decode(i.opts.query)),i.id=null,i.upgrades=null,i.pingInterval=null,i.pingTimeout=null,i.pingTimeoutTimer=null,"function"==typeof addEventListener&&(i.opts.closeOnBeforeunload&&addEventListener("beforeunload",(function(){i.transport&&(i.transport.removeAllListeners(),i.transport.close())}),!1),"localhost"!==i.hostname&&(i.offlineEventListener=function(){i.onClose("transport close")},addEventListener("offline",i.offlineEventListener,!1))),i.open(),i}return i(a,[{key:"createTransport",value:function(t){var e=function(t){var e={};for(var n in t)t.hasOwnProperty(n)&&(e[n]=t[n]);return e}(this.opts.query);e.EIO=4,e.transport=t,this.id&&(e.sid=this.id);var n=o({},this.opts.transportOptions[t],this.opts,{query:e,socket:this,hostname:this.hostname,secure:this.secure,port:this.port});return new ht[t](n)}},{key:"open",value:function(){var t,e=this;if(this.opts.rememberUpgrade&&a.priorWebsocketSuccess&&-1!==this.transports.indexOf("websocket"))t="websocket";else{if(0===this.transports.length)return void this.setTimeoutFn((function(){e.emitReserved("error","No transports available")}),0);t=this.transports[0]}this.readyState="opening";try{t=this.createTransport(t)}catch(t){return this.transports.shift(),void this.open()}t.open(),this.setTransport(t)}},{key:"setTransport",value:function(t){var e=this;this.transport&&this.transport.removeAllListeners(),this.transport=t,t.on("drain",this.onDrain.bind(this)).on("packet",this.onPacket.bind(this)).on("error",this.onError.bind(this)).on("close",(function(){e.onClose("transport close")}))}},{key:"probe",value:function(t){var e=this,n=this.createTransport(t),r=!1;a.priorWebsocketSuccess=!1;var i=function(){r||(n.send([{type:"ping",data:"probe"}]),n.once("packet",(function(t){if(!r)if("pong"===t.type&&"probe"===t.data){if(e.upgrading=!0,e.emitReserved("upgrading",n),!n)return;a.priorWebsocketSuccess="websocket"===n.name,e.transport.pause((function(){r||"closed"!==e.readyState&&(f(),e.setTransport(n),n.send([{type:"upgrade"}]),e.emitReserved("upgrade",n),n=null,e.upgrading=!1,e.flush())}))}else{var i=new Error("probe error");i.transport=n.name,e.emitReserved("upgradeError",i)}})))};function o(){r||(r=!0,f(),n.close(),n=null)}var s=function(t){var r=new Error("probe error: "+t);r.transport=n.name,o(),e.emitReserved("upgradeError",r)};function c(){s("transport closed")}function h(){s("socket closed")}function u(t){n&&t.name!==n.name&&o()}var f=function(){n.removeListener("open",i),n.removeListener("error",s),n.removeListener("close",c),e.off("close",h),e.off("upgrading",u)};n.once("open",i),n.once("error",s),n.once("close",c),this.once("close",h),this.once("upgrading",u),n.open()}},{key:"onOpen",value:function(){if(this.readyState="open",a.priorWebsocketSuccess="websocket"===this.transport.name,this.emitReserved("open"),this.flush(),"open"===this.readyState&&this.opts.upgrade&&this.transport.pause)for(var t=0,e=this.upgrades.length;t<e;t++)this.probe(this.upgrades[t])}},{key:"onPacket",value:function(t){if("opening"===this.readyState||"open"===this.readyState||"closing"===this.readyState)switch(this.emitReserved("packet",t),this.emitReserved("heartbeat"),t.type){case"open":this.onHandshake(JSON.parse(t.data));break;case"ping":this.resetPingTimeout(),this.sendPacket("pong"),this.emitReserved("ping"),this.emitReserved("pong");break;case"error":var e=new Error("server error");e.code=t.data,this.onError(e);break;case"message":this.emitReserved("data",t.data),this.emitReserved("message",t.data)}}},{key:"onHandshake",value:function(t){this.emitReserved("handshake",t),this.id=t.sid,this.transport.query.sid=t.sid,this.upgrades=this.filterUpgrades(t.upgrades),this.pingInterval=t.pingInterval,this.pingTimeout=t.pingTimeout,this.onOpen(),"closed"!==this.readyState&&this.resetPingTimeout()}},{key:"resetPingTimeout",value:function(){var t=this;this.clearTimeoutFn(this.pingTimeoutTimer),this.pingTimeoutTimer=this.setTimeoutFn((function(){t.onClose("ping timeout")}),this.pingInterval+this.pingTimeout),this.opts.autoUnref&&this.pingTimeoutTimer.unref()}},{key:"onDrain",value:function(){this.writeBuffer.splice(0,this.prevBufferLen),this.prevBufferLen=0,0===this.writeBuffer.length?this.emitReserved("drain"):this.flush()}},{key:"flush",value:function(){"closed"!==this.readyState&&this.transport.writable&&!this.upgrading&&this.writeBuffer.length&&(this.transport.send(this.writeBuffer),this.prevBufferLen=this.writeBuffer.length,this.emitReserved("flush"))}},{key:"write",value:function(t,e,n){return this.sendPacket("message",t,e,n),this}},{key:"send",value:function(t,e,n){return this.sendPacket("message",t,e,n),this}},{key:"sendPacket",value:function(t,e,n,r){if("function"==typeof e&&(r=e,e=void 0),"function"==typeof n&&(r=n,n=null),"closing"!==this.readyState&&"closed"!==this.readyState){(n=n||{}).compress=!1!==n.compress;var i={type:t,data:e,options:n};this.emitReserved("packetCreate",i),this.writeBuffer.push(i),r&&this.once("flush",r),this.flush()}}},{key:"close",value:function(){var t=this,e=function(){t.onClose("forced close"),t.transport.close()},n=function n(){t.off("upgrade",n),t.off("upgradeError",n),e()},r=function(){t.once("upgrade",n),t.once("upgradeError",n)};return"opening"!==this.readyState&&"open"!==this.readyState||(this.readyState="closing",this.writeBuffer.length?this.once("drain",(function(){t.upgrading?r():e()})):this.upgrading?r():e()),this}},{key:"onError",value:function(t){a.priorWebsocketSuccess=!1,this.emitReserved("error",t),this.onClose("transport error",t)}},{key:"onClose",value:function(t,e){"opening"!==this.readyState&&"open"!==this.readyState&&"closing"!==this.readyState||(this.clearTimeoutFn(this.pingTimeoutTimer),this.transport.removeAllListeners("close"),this.transport.close(),this.transport.removeAllListeners(),"function"==typeof removeEventListener&&removeEventListener("offline",this.offlineEventListener,!1),this.readyState="closed",this.id=null,this.emitReserved("close",t,e),this.writeBuffer=[],this.prevBufferLen=0)}},{key:"filterUpgrades",value:function(t){for(var e=[],n=0,r=t.length;n<r;n++)~this.transports.indexOf(t[n])&&e.push(t[n]);return e}}]),a}(T);ut.protocol=4;var ft={},pt={};function lt(t,e,n){for(var r=0,i=0,o=n.length;i<o;i++)(r=n.charCodeAt(i))<128?t.setUint8(e++,r):r<2048?(t.setUint8(e++,192|r>>6),t.setUint8(e++,128|63&r)):r<55296||r>=57344?(t.setUint8(e++,224|r>>12),t.setUint8(e++,128|r>>6&63),t.setUint8(e++,128|63&r)):(i++,r=65536+((1023&r)<<10|1023&n.charCodeAt(i)),t.setUint8(e++,240|r>>18),t.setUint8(e++,128|r>>12&63),t.setUint8(e++,128|r>>6&63),t.setUint8(e++,128|63&r))}function dt(t,n,r){var i=e(r),o=0,s=0,a=0,c=0,h=0,u=0;if("string"===i){if(h=function(t){for(var e=0,n=0,r=0,i=t.length;r<i;r++)(e=t.charCodeAt(r))<128?n+=1:e<2048?n+=2:e<55296||e>=57344?n+=3:(r++,n+=4);return 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a=t.getUint8(o);if(0!=(128&a))if(192!=(224&a))if(224!=(240&a)){if(240!=(248&a))throw new Error("Invalid byte "+a.toString(16));(i=(7&a)<<18|(63&t.getUint8(++o))<<12|(63&t.getUint8(++o))<<6|(63&t.getUint8(++o))<<0)>=65536?(i-=65536,r+=String.fromCharCode(55296+(i>>>10),56320+(1023&i))):r+=String.fromCharCode(i)}else r+=String.fromCharCode((15&a)<<12|(63&t.getUint8(++o))<<6|(63&t.getUint8(++o))<<0);else r+=String.fromCharCode((31&a)<<6|63&t.getUint8(++o));else r+=String.fromCharCode(a)}return r}(this._view,this._offset,t);return this._offset+=t,e},vt.prototype._bin=function(t){var e=this._buffer.slice(this._offset,this._offset+t);return this._offset+=t,e},vt.prototype._parse=function(){var t,e=this._view.getUint8(this._offset++),n=0,r=0,i=0,o=0;if(e<192)return e<128?e:e<144?this._map(15&e):e<160?this._array(15&e):this._str(31&e);if(e>223)return-1*(255-e+1);switch(e){case 192:return null;case 194:return!1;case 195:return!0;case 196:return n=this._view.getUint8(this._offset),this._offset+=1,this._bin(n);case 197:return n=this._view.getUint16(this._offset),this._offset+=2,this._bin(n);case 198:return n=this._view.getUint32(this._offset),this._offset+=4,this._bin(n);case 199:return n=this._view.getUint8(this._offset),r=this._view.getInt8(this._offset+1),this._offset+=2,[r,this._bin(n)];case 200:return n=this._view.getUint16(this._offset),r=this._view.getInt8(this._offset+2),this._offset+=3,[r,this._bin(n)];case 201:return n=this._view.getUint32(this._offset),r=this._view.getInt8(this._offset+4),this._offset+=5,[r,this._bin(n)];case 202:return t=this._view.getFloat32(this._offset),this._offset+=4,t;case 203:return t=this._view.getFloat64(this._offset),this._offset+=8,t;case 204:return t=this._view.getUint8(this._offset),this._offset+=1,t;case 205:return t=this._view.getUint16(this._offset),this._offset+=2,t;case 206:return t=this._view.getUint32(this._offset),this._offset+=4,t;case 207:return i=this._view.getUint32(this._offset)*Math.pow(2,32),o=this._view.getUint32(this._offset+4),this._offset+=8,i+o;case 208:return t=this._view.getInt8(this._offset),this._offset+=1,t;case 209:return t=this._view.getInt16(this._offset),this._offset+=2,t;case 210:return t=this._view.getInt32(this._offset),this._offset+=4,t;case 211:return i=this._view.getInt32(this._offset)*Math.pow(2,32),o=this._view.getUint32(this._offset+4),this._offset+=8,i+o;case 212:return r=this._view.getInt8(this._offset),this._offset+=1,0===r?void(this._offset+=1):[r,this._bin(1)];case 213:return r=this._view.getInt8(this._offset),this._offset+=1,[r,this._bin(2)];case 214:return r=this._view.getInt8(this._offset),this._offset+=1,[r,this._bin(4)];case 215:return r=this._view.getInt8(this._offset),this._offset+=1,0===r?(i=this._view.getInt32(this._offset)*Math.pow(2,32),o=this._view.getUint32(this._offset+4),this._offset+=8,new Date(i+o)):[r,this._bin(8)];case 216:return r=this._view.getInt8(this._offset),this._offset+=1,[r,this._bin(16)];case 217:return n=this._view.getUint8(this._offset),this._offset+=1,this._str(n);case 218:return n=this._view.getUint16(this._offset),this._offset+=2,this._str(n);case 219:return n=this._view.getUint32(this._offset),this._offset+=4,this._str(n);case 220:return n=this._view.getUint16(this._offset),this._offset+=2,this._array(n);case 221:return n=this._view.getUint32(this._offset),this._offset+=4,this._array(n);case 222:return n=this._view.getUint16(this._offset),this._offset+=2,this._map(n);case 223:return n=this._view.getUint32(this._offset),this._offset+=4,this._map(n)}throw new Error("Could not parse")};var gt=function(t){var e=new vt(t),n=e._parse();if(e._offset!==t.byteLength)throw new Error(t.byteLength-e._offset+" trailing bytes");return n};pt.encode=yt,pt.decode=gt;var mt,_t={exports:{}};!function(t){function e(t){if(t)return function(t){for(var n in e.prototype)t[n]=e.prototype[n];return t}(t)}t.exports=e,e.prototype.on=e.prototype.addEventListener=function(t,e){return this._callbacks=this._callbacks||{},(this._callbacks["$"+t]=this._callbacks["$"+t]||[]).push(e),this},e.prototype.once=function(t,e){function n(){this.off(t,n),e.apply(this,arguments)}return n.fn=e,this.on(t,n),this},e.prototype.off=e.prototype.removeListener=e.prototype.removeAllListeners=e.prototype.removeEventListener=function(t,e){if(this._callbacks=this._callbacks||{},0==arguments.length)return this._callbacks={},this;var n,r=this._callbacks["$"+t];if(!r)return this;if(1==arguments.length)return delete this._callbacks["$"+t],this;for(var i=0;i<r.length;i++)if((n=r[i])===e||n.fn===e){r.splice(i,1);break}return 0===r.length&&delete this._callbacks["$"+t],this},e.prototype.emit=function(t){this._callbacks=this._callbacks||{};for(var e=new Array(arguments.length-1),n=this._callbacks["$"+t],r=1;r<arguments.length;r++)e[r-1]=arguments[r];if(n){r=0;for(var i=(n=n.slice(0)).length;r<i;++r)n[r].apply(this,e)}return this},e.prototype.listeners=function(t){return this._callbacks=this._callbacks||{},this._callbacks["$"+t]||[]},e.prototype.hasListeners=function(t){return!!this.listeners(t).length}}(_t);var bt=pt,kt=_t.exports,wt=ft.protocol=5,Et=mt=ft.PacketType={CONNECT:0,DISCONNECT:1,EVENT:2,ACK:3,CONNECT_ERROR:4},Ct=Number.isInteger||function(t){return"number"==typeof t&&isFinite(t)&&Math.floor(t)===t},Ot=function(t){return"string"==typeof t},Tt=function(t){return"[object Object]"===Object.prototype.toString.call(t)};function St(){}function Rt(){}St.prototype.encode=function(t){return[bt.encode(t)]},kt(Rt.prototype),Rt.prototype.add=function(t){var e=bt.decode(t);this.checkPacket(e),this.emit("decoded",e)},Rt.prototype.checkPacket=function(t){if(!(Ct(t.type)&&t.type>=Et.CONNECT&&t.type<=Et.CONNECT_ERROR))throw new Error("invalid packet type");if(!Ot(t.nsp))throw new Error("invalid namespace");if(!function(t){switch(t.type){case Et.CONNECT:return void 0===t.data||Tt(t.data);case Et.DISCONNECT:return void 0===t.data;case Et.CONNECT_ERROR:return Ot(t.data)||Tt(t.data);default:return Array.isArray(t.data)}}(t))throw new Error("invalid payload");if(!(void 0===t.id||Ct(t.id)))throw new Error("invalid packet id")},Rt.prototype.destroy=function(){};var At=ft.Encoder=St,xt=ft.Decoder=Rt,Ut=Object.freeze(t({__proto__:null,default:ft,protocol:wt,get PacketType(){return mt},Encoder:At,Decoder:xt},[ft]));function Lt(t,e,n){return t.on(e,n),function(){t.off(e,n)}}var Bt=Object.freeze({connect:1,connect_error:1,disconnect:1,disconnecting:1,newListener:1,removeListener:1}),jt=function(t){s(r,t);var e=f(r);function r(t,i,o){var s;return n(this,r),(s=e.call(this)).connected=!1,s.disconnected=!0,s.receiveBuffer=[],s.sendBuffer=[],s.ids=0,s.acks={},s.flags={},s.io=t,s.nsp=i,o&&o.auth&&(s.auth=o.auth),s.io._autoConnect&&s.open(),s}return i(r,[{key:"subEvents",value:function(){if(!this.subs){var t=this.io;this.subs=[Lt(t,"open",this.onopen.bind(this)),Lt(t,"packet",this.onpacket.bind(this)),Lt(t,"error",this.onerror.bind(this)),Lt(t,"close",this.onclose.bind(this))]}}},{key:"active",get:function(){return!!this.subs}},{key:"connect",value:function(){return this.connected||(this.subEvents(),this.io._reconnecting||this.io.open(),"open"===this.io._readyState&&this.onopen()),this}},{key:"open",value:function(){return this.connect()}},{key:"send",value:function(){for(var t=arguments.length,e=new Array(t),n=0;n<t;n++)e[n]=arguments[n];return e.unshift("message"),this.emit.apply(this,e),this}},{key:"emit",value:function(t){if(Bt.hasOwnProperty(t))throw new Error('"'+t+'" is a reserved event name');for(var e=arguments.length,n=new Array(e>1?e-1:0),r=1;r<e;r++)n[r-1]=arguments[r];n.unshift(t);var i={type:mt.EVENT,data:n,options:{}};if(i.options.compress=!1!==this.flags.compress,"function"==typeof n[n.length-1]){var o=this.ids++,s=n.pop();this._registerAckCallback(o,s),i.id=o}var a=this.io.engine&&this.io.engine.transport&&this.io.engine.transport.writable,c=this.flags.volatile&&(!a||!this.connected);return c||(this.connected?this.packet(i):this.sendBuffer.push(i)),this.flags={},this}},{key:"_registerAckCallback",value:function(t,e){var n=this,r=this.flags.timeout;if(void 0!==r){var i=this.io.setTimeoutFn((function(){delete n.acks[t];for(var r=0;r<n.sendBuffer.length;r++)n.sendBuffer[r].id===t&&n.sendBuffer.splice(r,1);e.call(n,new Error("operation has timed out"))}),r);this.acks[t]=function(){n.io.clearTimeoutFn(i);for(var t=arguments.length,r=new Array(t),o=0;o<t;o++)r[o]=arguments[o];e.apply(n,[null].concat(r))}}else this.acks[t]=e}},{key:"packet",value:function(t){t.nsp=this.nsp,this.io._packet(t)}},{key:"onopen",value:function(){var t=this;"function"==typeof this.auth?this.auth((function(e){t.packet({type:mt.CONNECT,data:e})})):this.packet({type:mt.CONNECT,data:this.auth})}},{key:"onerror",value:function(t){this.connected||this.emitReserved("connect_error",t)}},{key:"onclose",value:function(t){this.connected=!1,this.disconnected=!0,delete this.id,this.emitReserved("disconnect",t)}},{key:"onpacket",value:function(t){if(t.nsp===this.nsp)switch(t.type){case mt.CONNECT:if(t.data&&t.data.sid){var e=t.data.sid;this.onconnect(e)}else this.emitReserved("connect_error",new Error("It seems you are trying to reach a Socket.IO server in v2.x with a v3.x client, but they are not compatible (more information here: https://socket.io/docs/v3/migrating-from-2-x-to-3-0/)"));break;case mt.EVENT:case mt.BINARY_EVENT:this.onevent(t);break;case mt.ACK:case mt.BINARY_ACK:this.onack(t);break;case mt.DISCONNECT:this.ondisconnect();break;case mt.CONNECT_ERROR:this.destroy();var n=new Error(t.data.message);n.data=t.data.data,this.emitReserved("connect_error",n)}}},{key:"onevent",value:function(t){var e=t.data||[];null!=t.id&&e.push(this.ack(t.id)),this.connected?this.emitEvent(e):this.receiveBuffer.push(Object.freeze(e))}},{key:"emitEvent",value:function(t){if(this._anyListeners&&this._anyListeners.length){var e,n=d(this._anyListeners.slice());try{for(n.s();!(e=n.n()).done;){e.value.apply(this,t)}}catch(t){n.e(t)}finally{n.f()}}p(a(r.prototype),"emit",this).apply(this,t)}},{key:"ack",value:function(t){var e=this,n=!1;return function(){if(!n){n=!0;for(var r=arguments.length,i=new Array(r),o=0;o<r;o++)i[o]=arguments[o];e.packet({type:mt.ACK,id:t,data:i})}}}},{key:"onack",value:function(t){var e=this.acks[t.id];"function"==typeof e&&(e.apply(this,t.data),delete this.acks[t.id])}},{key:"onconnect",value:function(t){this.id=t,this.connected=!0,this.disconnected=!1,this.emitBuffered(),this.emitReserved("connect")}},{key:"emitBuffered",value:function(){var t=this;this.receiveBuffer.forEach((function(e){return t.emitEvent(e)})),this.receiveBuffer=[],this.sendBuffer.forEach((function(e){return t.packet(e)})),this.sendBuffer=[]}},{key:"ondisconnect",value:function(){this.destroy(),this.onclose("io server disconnect")}},{key:"destroy",value:function(){this.subs&&(this.subs.forEach((function(t){return t()})),this.subs=void 0),this.io._destroy(this)}},{key:"disconnect",value:function(){return this.connected&&this.packet({type:mt.DISCONNECT}),this.destroy(),this.connected&&this.onclose("io client disconnect"),this}},{key:"close",value:function(){return this.disconnect()}},{key:"compress",value:function(t){return this.flags.compress=t,this}},{key:"volatile",get:function(){return this.flags.volatile=!0,this}},{key:"timeout",value:function(t){return this.flags.timeout=t,this}},{key:"onAny",value:function(t){return this._anyListeners=this._anyListeners||[],this._anyListeners.push(t),this}},{key:"prependAny",value:function(t){return this._anyListeners=this._anyListeners||[],this._anyListeners.unshift(t),this}},{key:"offAny",value:function(t){if(!this._anyListeners)return this;if(t){for(var e=this._anyListeners,n=0;n<e.length;n++)if(t===e[n])return e.splice(n,1),this}else this._anyListeners=[];return this}},{key:"listenersAny",value:function(){return this._anyListeners||[]}}]),r}(T),Nt=Pt;function Pt(t){t=t||{},this.ms=t.min||100,this.max=t.max||1e4,this.factor=t.factor||2,this.jitter=t.jitter>0&&t.jitter<=1?t.jitter:0,this.attempts=0}Pt.prototype.duration=function(){var t=this.ms*Math.pow(this.factor,this.attempts++);if(this.jitter){var e=Math.random(),n=Math.floor(e*this.jitter*t);t=0==(1&Math.floor(10*e))?t-n:t+n}return 0|Math.min(t,this.max)},Pt.prototype.reset=function(){this.attempts=0},Pt.prototype.setMin=function(t){this.ms=t},Pt.prototype.setMax=function(t){this.max=t},Pt.prototype.setJitter=function(t){this.jitter=t};var qt=function(t){s(o,t);var r=f(o);function o(t,i){var s,a;n(this,o),(s=r.call(this)).nsps={},s.subs=[],t&&"object"===e(t)&&(i=t,t=void 0),(i=i||{}).path=i.path||"/socket.io",s.opts=i,O(h(s),i),s.reconnection(!1!==i.reconnection),s.reconnectionAttempts(i.reconnectionAttempts||1/0),s.reconnectionDelay(i.reconnectionDelay||1e3),s.reconnectionDelayMax(i.reconnectionDelayMax||5e3),s.randomizationFactor(null!==(a=i.randomizationFactor)&&void 0!==a?a:.5),s.backoff=new Nt({min:s.reconnectionDelay(),max:s.reconnectionDelayMax(),jitter:s.randomizationFactor()}),s.timeout(null==i.timeout?2e4:i.timeout),s._readyState="closed",s.uri=t;var c=i.parser||Ut;return s.encoder=new c.Encoder,s.decoder=new c.Decoder,s._autoConnect=!1!==i.autoConnect,s._autoConnect&&s.open(),s}return i(o,[{key:"reconnection",value:function(t){return arguments.length?(this._reconnection=!!t,this):this._reconnection}},{key:"reconnectionAttempts",value:function(t){return void 0===t?this._reconnectionAttempts:(this._reconnectionAttempts=t,this)}},{key:"reconnectionDelay",value:function(t){var e;return void 0===t?this._reconnectionDelay:(this._reconnectionDelay=t,null===(e=this.backoff)||void 0===e||e.setMin(t),this)}},{key:"randomizationFactor",value:function(t){var e;return void 0===t?this._randomizationFactor:(this._randomizationFactor=t,null===(e=this.backoff)||void 0===e||e.setJitter(t),this)}},{key:"reconnectionDelayMax",value:function(t){var e;return void 0===t?this._reconnectionDelayMax:(this._reconnectionDelayMax=t,null===(e=this.backoff)||void 0===e||e.setMax(t),this)}},{key:"timeout",value:function(t){return arguments.length?(this._timeout=t,this):this._timeout}},{key:"maybeReconnectOnOpen",value:function(){!this._reconnecting&&this._reconnection&&0===this.backoff.attempts&&this.reconnect()}},{key:"open",value:function(t){var e=this;if(~this._readyState.indexOf("open"))return this;this.engine=new ut(this.uri,this.opts);var n=this.engine,r=this;this._readyState="opening",this.skipReconnect=!1;var i=Lt(n,"open",(function(){r.onopen(),t&&t()})),o=Lt(n,"error",(function(n){r.cleanup(),r._readyState="closed",e.emitReserved("error",n),t?t(n):r.maybeReconnectOnOpen()}));if(!1!==this._timeout){var s=this._timeout;0===s&&i();var a=this.setTimeoutFn((function(){i(),n.close(),n.emit("error",new Error("timeout"))}),s);this.opts.autoUnref&&a.unref(),this.subs.push((function(){clearTimeout(a)}))}return this.subs.push(i),this.subs.push(o),this}},{key:"connect",value:function(t){return this.open(t)}},{key:"onopen",value:function(){this.cleanup(),this._readyState="open",this.emitReserved("open");var t=this.engine;this.subs.push(Lt(t,"ping",this.onping.bind(this)),Lt(t,"data",this.ondata.bind(this)),Lt(t,"error",this.onerror.bind(this)),Lt(t,"close",this.onclose.bind(this)),Lt(this.decoder,"decoded",this.ondecoded.bind(this)))}},{key:"onping",value:function(){this.emitReserved("ping")}},{key:"ondata",value:function(t){this.decoder.add(t)}},{key:"ondecoded",value:function(t){this.emitReserved("packet",t)}},{key:"onerror",value:function(t){this.emitReserved("error",t)}},{key:"socket",value:function(t,e){var n=this.nsps[t];return n||(n=new jt(this,t,e),this.nsps[t]=n),n}},{key:"_destroy",value:function(t){for(var e=0,n=Object.keys(this.nsps);e<n.length;e++){var r=n[e];if(this.nsps[r].active)return}this._close()}},{key:"_packet",value:function(t){for(var e=this.encoder.encode(t),n=0;n<e.length;n++)this.engine.write(e[n],t.options)}},{key:"cleanup",value:function(){this.subs.forEach((function(t){return t()})),this.subs.length=0,this.decoder.destroy()}},{key:"_close",value:function(){this.skipReconnect=!0,this._reconnecting=!1,this.onclose("forced close"),this.engine&&this.engine.close()}},{key:"disconnect",value:function(){return this._close()}},{key:"onclose",value:function(t){this.cleanup(),this.backoff.reset(),this._readyState="closed",this.emitReserved("close",t),this._reconnection&&!this.skipReconnect&&this.reconnect()}},{key:"reconnect",value:function(){var t=this;if(this._reconnecting||this.skipReconnect)return this;var e=this;if(this.backoff.attempts>=this._reconnectionAttempts)this.backoff.reset(),this.emitReserved("reconnect_failed"),this._reconnecting=!1;else{var n=this.backoff.duration();this._reconnecting=!0;var r=this.setTimeoutFn((function(){e.skipReconnect||(t.emitReserved("reconnect_attempt",e.backoff.attempts),e.skipReconnect||e.open((function(n){n?(e._reconnecting=!1,e.reconnect(),t.emitReserved("reconnect_error",n)):e.onreconnect()})))}),n);this.opts.autoUnref&&r.unref(),this.subs.push((function(){clearTimeout(r)}))}}},{key:"onreconnect",value:function(){var t=this.backoff.attempts;this._reconnecting=!1,this.backoff.reset(),this.emitReserved("reconnect",t)}}]),o}(T),Dt={};function It(t,n){"object"===e(t)&&(n=t,t=void 0);var r,i=function(t){var e=arguments.length>1&&void 0!==arguments[1]?arguments[1]:"",n=arguments.length>2?arguments[2]:void 0,r=t;n=n||"undefined"!=typeof location&&location,null==t&&(t=n.protocol+"//"+n.host),"string"==typeof t&&("/"===t.charAt(0)&&(t="/"===t.charAt(1)?n.protocol+t:n.host+t),/^(https?|wss?):\/\//.test(t)||(t=void 0!==n?n.protocol+"//"+t:"https://"+t),r=g(t)),r.port||(/^(http|ws)$/.test(r.protocol)?r.port="80":/^(http|ws)s$/.test(r.protocol)&&(r.port="443")),r.path=r.path||"/";var i=-1!==r.host.indexOf(":")?"["+r.host+"]":r.host;return r.id=r.protocol+"://"+i+":"+r.port+e,r.href=r.protocol+"://"+i+(n&&n.port===r.port?"":":"+r.port),r}(t,(n=n||{}).path||"/socket.io"),o=i.source,s=i.id,a=i.path,c=Dt[s]&&a in Dt[s].nsps;return n.forceNew||n["force new connection"]||!1===n.multiplex||c?r=new qt(o,n):(Dt[s]||(Dt[s]=new qt(o,n)),r=Dt[s]),i.query&&!n.query&&(n.query=i.queryKey),r.socket(i.path,n)}return o(It,{Manager:qt,Socket:jt,io:It,connect:It}),It}));
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this.id,a(h(f.prototype),"emit",this).call(this,"disconnect",t)}},{key:"onpacket",value:function(t){if(t.nsp===this.nsp)switch(t.type){case p.PacketType.CONNECT:if(t.data&&t.data.sid){var e=t.data.sid;this.onconnect(e)}else a(h(f.prototype),"emit",this).call(this,"connect_error",new Error("It seems you are trying to reach a Socket.IO server in v2.x with a v3.x client, but they are not compatible (more information here: https://socket.io/docs/v3/migrating-from-2-x-to-3-0/)"));break;case p.PacketType.EVENT:case p.PacketType.BINARY_EVENT:this.onevent(t);break;case p.PacketType.ACK:case p.PacketType.BINARY_ACK:this.onack(t);break;case p.PacketType.DISCONNECT:this.ondisconnect();break;case p.PacketType.CONNECT_ERROR:var n=new Error(t.data.message);n.data=t.data.data,a(h(f.prototype),"emit",this).call(this,"connect_error",n)}}},{key:"onevent",value:function(t){var e=t.data||[];null!=t.id&&e.push(this.ack(t.id)),this.connected?this.emitEvent(e):this.receiveBuffer.push(Object.freeze(e))}},{key:"emitEvent",value:function(t){if(this._anyListeners&&this._anyListeners.length){var e,n=o(this._anyListeners.slice());try{for(n.s();!(e=n.n()).done;)e.value.apply(this,t)}catch(t){n.e(t)}finally{n.f()}}a(h(f.prototype),"emit",this).apply(this,t)}},{key:"ack",value:function(t){var e=this,n=!1;return function(){if(!n){n=!0;for(var r=arguments.length,o=new Array(r),i=0;i<r;i++)o[i]=arguments[i];e.packet({type:p.PacketType.ACK,id:t,data:o})}}}},{key:"onack",value:function(t){var e=this.acks[t.id];"function"==typeof e&&(e.apply(this,t.data),delete this.acks[t.id])}},{key:"onconnect",value:function(t){this.id=t,this.connected=!0,this.disconnected=!1,a(h(f.prototype),"emit",this).call(this,"connect"),this.emitBuffered()}},{key:"emitBuffered",value:function(){var t=this;this.receiveBuffer.forEach((function(e){return t.emitEvent(e)})),this.receiveBuffer=[],this.sendBuffer.forEach((function(e){return t.packet(e)})),this.sendBuffer=[]}},{key:"ondisconnect",value:function(){this.destroy(),this.onclose("io server disconnect")}},{key:"destroy",value:function(){this.subs&&(this.subs.forEach((function(t){return t()})),this.subs=void 0),this.io._destroy(this)}},{key:"disconnect",value:function(){return this.connected&&this.packet({type:p.PacketType.DISCONNECT}),this.destroy(),this.connected&&this.onclose("io client disconnect"),this}},{key:"close",value:function(){return this.disconnect()}},{key:"compress",value:function(t){return this.flags.compress=t,this}},{key:"onAny",value:function(t){return this._anyListeners=this._anyListeners||[],this._anyListeners.push(t),this}},{key:"prependAny",value:function(t){return this._anyListeners=this._anyListeners||[],this._anyListeners.unshift(t),this}},{key:"offAny",value:function(t){if(!this._anyListeners)return this;if(t){for(var 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location&&location.port?location.port:e.secure?443:80),e.transports=n.transports||["polling","websocket"],e.readyState="",e.writeBuffer=[],e.prevBufferLen=0,e.opts=r({path:"/engine.io",agent:!1,withCredentials:!1,upgrade:!0,jsonp:!0,timestampParam:"t",rememberUpgrade:!1,rejectUnauthorized:!0,perMessageDeflate:{threshold:1024},transportOptions:{}},n),e.opts.path=e.opts.path.replace(/\/$/,"")+"/","string"==typeof e.opts.query&&(e.opts.query=d.decode(e.opts.query)),e.id=null,e.upgrades=null,e.pingInterval=null,e.pingTimeout=null,e.pingTimeoutTimer=null,"function"==typeof addEventListener&&addEventListener("beforeunload",(function(){e.transport&&(e.transport.removeAllListeners(),e.transport.close())}),!1),e.open(),e}return e=p,(n=[{key:"createTransport",value:function(t){var e=function(t){var e={};for(var n in t)t.hasOwnProperty(n)&&(e[n]=t[n]);return e}(this.opts.query);e.EIO=l.protocol,e.transport=t,this.id&&(e.sid=this.id);var n=r({},this.opts.transportOptions[t],this.opts,{query:e,socket:this,hostname:this.hostname,secure:this.secure,port:this.port});return new h[t](n)}},{key:"open",value:function(){var t;if(this.opts.rememberUpgrade&&p.priorWebsocketSuccess&&-1!==this.transports.indexOf("websocket"))t="websocket";else{if(0===this.transports.length){var e=this;return void setTimeout((function(){e.emit("error","No transports available")}),0)}t=this.transports[0]}this.readyState="opening";try{t=this.createTransport(t)}catch(t){return this.transports.shift(),void this.open()}t.open(),this.setTransport(t)}},{key:"setTransport",value:function(t){var e=this;this.transport&&this.transport.removeAllListeners(),this.transport=t,t.on("drain",(function(){e.onDrain()})).on("packet",(function(t){e.onPacket(t)})).on("error",(function(t){e.onError(t)})).on("close",(function(){e.onClose("transport close")}))}},{key:"probe",value:function(t){var e=this.createTransport(t,{probe:1}),n=!1,r=this;function o(){if(r.onlyBinaryUpgrades){var t=!this.supportsBinary&&r.transport.supportsBinary;n=n||t}n||(e.send([{type:"ping",data:"probe"}]),e.once("packet",(function(t){if(!n)if("pong"===t.type&&"probe"===t.data){if(r.upgrading=!0,r.emit("upgrading",e),!e)return;p.priorWebsocketSuccess="websocket"===e.name,r.transport.pause((function(){n||"closed"!==r.readyState&&(f(),r.setTransport(e),e.send([{type:"upgrade"}]),r.emit("upgrade",e),e=null,r.upgrading=!1,r.flush())}))}else{var o=new Error("probe error");o.transport=e.name,r.emit("upgradeError",o)}})))}function i(){n||(n=!0,f(),e.close(),e=null)}function s(t){var n=new Error("probe error: "+t);n.transport=e.name,i(),r.emit("upgradeError",n)}function a(){s("transport closed")}function c(){s("socket closed")}function u(t){e&&t.name!==e.name&&i()}function f(){e.removeListener("open",o),e.removeListener("error",s),e.removeListener("close",a),r.removeListener("close",c),r.removeListener("upgrading",u)}p.priorWebsocketSuccess=!1,e.once("open",o),e.once("error",s),e.once("close",a),this.once("close",c),this.once("upgrading",u),e.open()}},{key:"onOpen",value:function(){if(this.readyState="open",p.priorWebsocketSuccess="websocket"===this.transport.name,this.emit("open"),this.flush(),"open"===this.readyState&&this.opts.upgrade&&this.transport.pause)for(var t=0,e=this.upgrades.length;t<e;t++)this.probe(this.upgrades[t])}},{key:"onPacket",value:function(t){if("opening"===this.readyState||"open"===this.readyState||"closing"===this.readyState)switch(this.emit("packet",t),this.emit("heartbeat"),t.type){case"open":this.onHandshake(JSON.parse(t.data));break;case"ping":this.resetPingTimeout(),this.sendPacket("pong"),this.emit("pong");break;case"error":var e=new Error("server error");e.code=t.data,this.onError(e);break;case"message":this.emit("data",t.data),this.emit("message",t.data)}}},{key:"onHandshake",value:function(t){this.emit("handshake",t),this.id=t.sid,this.transport.query.sid=t.sid,this.upgrades=this.filterUpgrades(t.upgrades),this.pingInterval=t.pingInterval,this.pingTimeout=t.pingTimeout,this.onOpen(),"closed"!==this.readyState&&this.resetPingTimeout()}},{key:"resetPingTimeout",value:function(){var t=this;clearTimeout(this.pingTimeoutTimer),this.pingTimeoutTimer=setTimeout((function(){t.onClose("ping 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 //# sourceMappingURL=socket.io.msgpack.min.js.map
Index: trip-planner-front/node_modules/socket.io/client-dist/socket.io.msgpack.min.js.map
===================================================================
--- trip-planner-front/node_modules/socket.io/client-dist/socket.io.msgpack.min.js.map	(revision 571e0df9a7a5e798c9941a85842f785177bedbbd)
+++ trip-planner-front/node_modules/socket.io/client-dist/socket.io.msgpack.min.js.map	(revision 6a3a178323fd905112b5392bd9d3cb83b66ef2d3)
@@ -1,1 +1,1 @@
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* Parses an URI\n *\n * @author Steven Levithan <stevenlevithan.com> (MIT license)\n * @api private\n */\n\nvar re = /^(?:(?![^:@]+:[^:@\\/]*@)(http|https|ws|wss):\\/\\/)?((?:(([^:@]*)(?::([^:@]*))?)?@)?((?:[a-f0-9]{0,4}:){2,7}[a-f0-9]{0,4}|[^:\\/?#]*)(?::(\\d*))?)(((\\/(?:[^?#](?![^?#\\/]*\\.[^?#\\/.]+(?:[?#]|$)))*\\/?)?([^?#\\/]*))(?:\\?([^#]*))?(?:#(.*))?)/;\n\nvar parts = [\n    'source', 'protocol', 'authority', 'userInfo', 'user', 'password', 'host', 'port', 'relative', 'path', 'directory', 'file', 'query', 'anchor'\n];\n\nmodule.exports = function parseuri(str) {\n    var src = str,\n        b = str.indexOf('['),\n        e = str.indexOf(']');\n\n    if (b != -1 && e != -1) {\n        str = str.substring(0, b) + str.substring(b, e).replace(/:/g, ';') + str.substring(e, str.length);\n    }\n\n    var m = re.exec(str || ''),\n        uri = {},\n        i = 14;\n\n    while (i--) {\n        uri[parts[i]] = m[i] || '';\n    }\n\n    if (b != -1 && e != -1) {\n        uri.source = src;\n        uri.host = uri.host.substring(1, uri.host.length - 1).replace(/;/g, ':');\n        uri.authority = uri.authority.replace('[', '').replace(']', '').replace(/;/g, ':');\n        uri.ipv6uri = true;\n    }\n\n    uri.pathNames = pathNames(uri, uri['path']);\n    uri.queryKey = queryKey(uri, uri['query']);\n\n    return uri;\n};\n\nfunction pathNames(obj, path) {\n    var regx = /\\/{2,9}/g,\n        names = path.replace(regx, \"/\").split(\"/\");\n\n    if (path.substr(0, 1) == '/' || path.length === 0) {\n        names.splice(0, 1);\n    }\n    if (path.substr(path.length - 1, 1) == '/') {\n        names.splice(names.length - 1, 1);\n    }\n\n    return names;\n}\n\nfunction queryKey(uri, query) {\n    var data = {};\n\n    query.replace(/(?:^|&)([^&=]*)=?([^&]*)/g, function ($0, $1, $2) {\n        if ($1) {\n            data[$1] = $2;\n        }\n    });\n\n    return data;\n}\n","\n/**\n * Module exports.\n *\n * Logic borrowed from Modernizr:\n *\n *   - https://github.com/Modernizr/Modernizr/blob/master/feature-detects/cors.js\n */\n\ntry {\n  module.exports = typeof XMLHttpRequest !== 'undefined' &&\n    'withCredentials' in new XMLHttpRequest();\n} catch (err) {\n  // if XMLHttp support is disabled in IE then it will throw\n  // when trying to create\n  module.exports = false;\n}\n","export default (() => {\n    if (typeof self !== \"undefined\") {\n        return self;\n    }\n    else if (typeof window !== \"undefined\") {\n        return window;\n    }\n    else {\n        return Function(\"return this\")();\n    }\n})();\n","// browser shim for xmlhttprequest module\nimport hasCORS from \"has-cors\";\nimport globalThis from \"../globalThis.js\";\nexport default function (opts) {\n    const xdomain = opts.xdomain;\n    // XMLHttpRequest can be disabled on IE\n    try {\n        if (\"undefined\" !== typeof XMLHttpRequest && (!xdomain || hasCORS)) {\n            return new XMLHttpRequest();\n        }\n    }\n    catch (e) { }\n   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*/\n\nexports.Emitter = Emitter;\n\n/**\n * Initialize a new `Emitter`.\n *\n * @api public\n */\n\nfunction Emitter(obj) {\n  if (obj) return mixin(obj);\n}\n\n/**\n * Mixin the emitter properties.\n *\n * @param {Object} obj\n * @return {Object}\n * @api private\n */\n\nfunction mixin(obj) {\n  for (var key in Emitter.prototype) {\n    obj[key] = Emitter.prototype[key];\n  }\n  return obj;\n}\n\n/**\n * Listen on the given `event` with `fn`.\n *\n * @param {String} event\n * @param {Function} fn\n * @return {Emitter}\n * @api public\n */\n\nEmitter.prototype.on =\nEmitter.prototype.addEventListener = function(event, fn){\n  this._callbacks = this._callbacks || {};\n  (this._callbacks['$' + event] = this._callbacks['$' + event] || [])\n    .push(fn);\n  return this;\n};\n\n/**\n * Adds an `event` listener that will be invoked a single\n * time then automatically removed.\n *\n * @param {String} event\n * @param {Function} fn\n * @return {Emitter}\n * @api public\n 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 cb = callbacks[i];\n    if (cb === fn || cb.fn === fn) {\n      callbacks.splice(i, 1);\n      break;\n    }\n  }\n\n  // Remove event specific arrays for event types that no\n  // one is subscribed for to avoid memory leak.\n  if (callbacks.length === 0) {\n    delete this._callbacks['$' + event];\n  }\n\n  return this;\n};\n\n/**\n * Emit `event` with the given args.\n *\n * @param {String} event\n * @param {Mixed} ...\n * @return {Emitter}\n */\n\nEmitter.prototype.emit = function(event){\n  this._callbacks = this._callbacks || {};\n\n  var args = new Array(arguments.length - 1)\n    , callbacks = this._callbacks['$' + event];\n\n  for (var i = 1; i < arguments.length; i++) {\n    args[i - 1] = arguments[i];\n  }\n\n  if (callbacks) {\n    callbacks = callbacks.slice(0);\n    for (var i = 0, len = callbacks.length; i < len; ++i) {\n      callbacks[i].apply(this, args);\n    }\n  }\n\n  return this;\n};\n\n// alias used for reserved events (protected method)\nEmitter.prototype.emitReserved = Emitter.prototype.emit;\n\n/**\n * Return array of callbacks for `event`.\n *\n * @param {String} event\n * @return {Array}\n * @api public\n */\n\nEmitter.prototype.listeners = function(event){\n  this._callbacks = this._callbacks || {};\n  return this._callbacks['$' + event] || [];\n};\n\n/**\n * Check if this emitter has `event` handlers.\n *\n * @param {String} event\n * @return {Boolean}\n * @api public\n */\n\nEmitter.prototype.hasListeners = function(event){\n  return !! this.listeners(event).length;\n};\n","const PACKET_TYPES = Object.create(null); // no Map = no polyfill\nPACKET_TYPES[\"open\"] = \"0\";\nPACKET_TYPES[\"close\"] = \"1\";\nPACKET_TYPES[\"ping\"] = \"2\";\nPACKET_TYPES[\"pong\"] = \"3\";\nPACKET_TYPES[\"message\"] = \"4\";\nPACKET_TYPES[\"upgrade\"] = \"5\";\nPACKET_TYPES[\"noop\"] = \"6\";\nconst PACKET_TYPES_REVERSE = Object.create(null);\nObject.keys(PACKET_TYPES).forEach(key => {\n    PACKET_TYPES_REVERSE[PACKET_TYPES[key]] = key;\n});\nconst ERROR_PACKET = { type: \"error\", data: \"parser error\" };\nexport { PACKET_TYPES, PACKET_TYPES_REVERSE, ERROR_PACKET };\n","/*\n * base64-arraybuffer 1.0.1 <https://github.com/niklasvh/base64-arraybuffer>\n * Copyright (c) 2021 Niklas von Hertzen <https://hertzen.com>\n * Released under MIT License\n */\nvar chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';\n// Use a lookup table to find the index.\nvar lookup = typeof Uint8Array === 'undefined' ? [] : new Uint8Array(256);\nfor (var i = 0; i < chars.length; i++) {\n    lookup[chars.charCodeAt(i)] = i;\n}\nvar encode = function (arraybuffer) {\n    var bytes = new Uint8Array(arraybuffer), i, len = bytes.length, base64 = '';\n    for (i = 0; i < len; i += 3) {\n        base64 += chars[bytes[i] >> 2];\n        base64 += chars[((bytes[i] & 3) << 4) | (bytes[i + 1] >> 4)];\n        base64 += chars[((bytes[i + 1] & 15) << 2) | (bytes[i + 2] >> 6)];\n        base64 += chars[bytes[i + 2] & 63];\n    }\n    if (len % 3 === 2) {\n        base64 = base64.substring(0, base64.length - 1) + '=';\n    }\n    else if (len % 3 === 1) {\n        base64 = base64.substring(0, base64.length - 2) + '==';\n    }\n    return base64;\n};\nvar decode = function (base64) {\n    var bufferLength = base64.length * 0.75, len = base64.length, i, p = 0, encoded1, encoded2, encoded3, encoded4;\n    if (base64[base64.length - 1] === '=') {\n        bufferLength--;\n        if (base64[base64.length - 2] === '=') {\n            bufferLength--;\n        }\n    }\n    var arraybuffer = new ArrayBuffer(bufferLength), bytes = new Uint8Array(arraybuffer);\n    for (i = 0; i < len; i += 4) {\n        encoded1 = lookup[base64.charCodeAt(i)];\n        encoded2 = lookup[base64.charCodeAt(i + 1)];\n        encoded3 = lookup[base64.charCodeAt(i + 2)];\n        encoded4 = lookup[base64.charCodeAt(i + 3)];\n        bytes[p++] = (encoded1 << 2) | (encoded2 >> 4);\n        bytes[p++] = ((encoded2 & 15) << 4) | (encoded3 >> 2);\n        bytes[p++] = ((encoded3 & 3) << 6) | (encoded4 & 63);\n    }\n    return arraybuffer;\n};\n\nexport { decode, encode };\n//# sourceMappingURL=base64-arraybuffer.es5.js.map\n","import { PACKET_TYPES } from \"./commons.js\";\nconst withNativeBlob = typeof Blob === \"function\" ||\n    (typeof Blob !== \"undefined\" &&\n        Object.prototype.toString.call(Blob) === \"[object BlobConstructor]\");\nconst withNativeArrayBuffer = typeof ArrayBuffer === \"function\";\n// ArrayBuffer.isView method is not defined in IE10\nconst isView = obj => {\n    return typeof ArrayBuffer.isView === \"function\"\n        ? ArrayBuffer.isView(obj)\n        : obj && obj.buffer instanceof ArrayBuffer;\n};\nconst encodePacket = ({ type, data }, supportsBinary, callback) => {\n    if (withNativeBlob && data instanceof Blob) {\n        if (supportsBinary) {\n            return callback(data);\n        }\n        else {\n            return encodeBlobAsBase64(data, callback);\n        }\n    }\n    else if (withNativeArrayBuffer &&\n        (data instanceof ArrayBuffer || isView(data))) {\n        if (supportsBinary) {\n            return callback(data);\n        }\n        else {\n            return encodeBlobAsBase64(new Blob([data]), callback);\n        }\n    }\n    // plain string\n    return callback(PACKET_TYPES[type] + (data || \"\"));\n};\nconst encodeBlobAsBase64 = (data, callback) => {\n    const fileReader = new FileReader();\n    fileReader.onload = function () {\n        const content = fileReader.result.split(\",\")[1];\n        callback(\"b\" + content);\n    };\n    return fileReader.readAsDataURL(data);\n};\nexport default encodePacket;\n","'use strict';\n\nvar alphabet = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-_'.split('')\n  , length = 64\n  , map = {}\n  , seed = 0\n  , i = 0\n  , prev;\n\n/**\n * Return a string representing the specified number.\n *\n * @param {Number} num The number to convert.\n * @returns {String} The string representation of the number.\n * @api public\n */\nfunction encode(num) {\n  var encoded = '';\n\n  do {\n    encoded = alphabet[num % length] + encoded;\n    num = Math.floor(num / length);\n  } while (num > 0);\n\n  return encoded;\n}\n\n/**\n * Return the integer value specified by the given string.\n *\n * @param {String} str The string to convert.\n * @returns {Number} The integer value represented by the string.\n * @api public\n */\nfunction decode(str) {\n  var decoded = 0;\n\n  for (i = 0; i < str.length; i++) {\n    decoded = decoded * length + map[str.charAt(i)];\n  }\n\n  return decoded;\n}\n\n/**\n * Yeast: A tiny growing id generator.\n *\n * @returns {String} A unique id.\n * @api public\n */\nfunction yeast() {\n  var now = encode(+new Date());\n\n  if (now !== prev) return seed = 0, prev = now;\n  return now +'.'+ encode(seed++);\n}\n\n//\n// Map each character to its index.\n//\nfor (; i < length; i++) map[alphabet[i]] = i;\n\n//\n// Expose the `yeast`, `encode` and `decode` functions.\n//\nyeast.encode = encode;\nyeast.decode = decode;\nmodule.exports = yeast;\n","import { ERROR_PACKET, PACKET_TYPES_REVERSE } from \"./commons.js\";\nimport { decode } from \"base64-arraybuffer\";\nconst withNativeArrayBuffer = typeof ArrayBuffer === \"function\";\nconst decodePacket = (encodedPacket, binaryType) => {\n    if (typeof encodedPacket !== \"string\") {\n        return {\n            type: \"message\",\n            data: mapBinary(encodedPacket, binaryType)\n        };\n    }\n    const type = encodedPacket.charAt(0);\n    if (type === \"b\") {\n        return {\n            type: \"message\",\n            data: decodeBase64Packet(encodedPacket.substring(1), binaryType)\n        };\n    }\n    const packetType = PACKET_TYPES_REVERSE[type];\n    if (!packetType) {\n        return ERROR_PACKET;\n    }\n    return encodedPacket.length > 1\n        ? {\n            type: PACKET_TYPES_REVERSE[type],\n            data: encodedPacket.substring(1)\n        }\n        : {\n            type: PACKET_TYPES_REVERSE[type]\n        };\n};\nconst decodeBase64Packet = (data, binaryType) => {\n    if (withNativeArrayBuffer) {\n        const decoded = decode(data);\n        return mapBinary(decoded, binaryType);\n    }\n    else {\n        return { base64: true, data }; // fallback for old browsers\n    }\n};\nconst mapBinary = (data, binaryType) => {\n    switch (binaryType) {\n        case \"blob\":\n            return data instanceof ArrayBuffer ? new Blob([data]) : data;\n        case \"arraybuffer\":\n        default:\n            return data; // assuming the data is already an ArrayBuffer\n    }\n};\nexport default decodePacket;\n","import encodePacket from \"./encodePacket.js\";\nimport decodePacket from \"./decodePacket.js\";\nconst SEPARATOR = String.fromCharCode(30); // see https://en.wikipedia.org/wiki/Delimiter#ASCII_delimited_text\nconst encodePayload = (packets, callback) => {\n    // some packets may be added to the array while encoding, so the initial length must be saved\n    const length = packets.length;\n    const encodedPackets = new Array(length);\n    let count = 0;\n    packets.forEach((packet, i) => {\n        // force base64 encoding for binary packets\n        encodePacket(packet, false, encodedPacket => {\n            encodedPackets[i] = encodedPacket;\n            if (++count === length) {\n                callback(encodedPackets.join(SEPARATOR));\n            }\n        });\n    });\n};\nconst decodePayload = (encodedPayload, binaryType) => {\n    const encodedPackets = encodedPayload.split(SEPARATOR);\n    const packets = [];\n    for (let i = 0; i < encodedPackets.length; i++) {\n        const decodedPacket = decodePacket(encodedPackets[i], binaryType);\n        packets.push(decodedPacket);\n        if (decodedPacket.type === \"error\") {\n            break;\n        }\n    }\n    return packets;\n};\nexport const protocol = 4;\nexport { encodePacket, encodePayload, decodePacket, decodePayload };\n","import { decodePacket } from \"engine.io-parser\";\nimport { Emitter } from \"@socket.io/component-emitter\";\nimport { installTimerFunctions } from \"./util.js\";\nexport class Transport extends Emitter {\n    /**\n     * Transport abstract constructor.\n     *\n     * @param {Object} options.\n     * @api private\n     */\n    constructor(opts) {\n        super();\n        this.writable = false;\n        installTimerFunctions(this, opts);\n        this.opts = opts;\n        this.query = opts.query;\n        this.readyState = \"\";\n        this.socket = opts.socket;\n    }\n    /**\n     * Emits an error.\n     *\n     * @param {String} str\n     * @return {Transport} for chaining\n     * @api protected\n     */\n    onError(msg, desc) {\n        const err = new Error(msg);\n        // @ts-ignore\n        err.type = \"TransportError\";\n        // @ts-ignore\n        err.description = desc;\n        super.emit(\"error\", err);\n        return this;\n    }\n    /**\n     * Opens the transport.\n     *\n     * @api public\n     */\n    open() {\n        if (\"closed\" === this.readyState || \"\" === this.readyState) {\n            this.readyState = \"opening\";\n            this.doOpen();\n        }\n        return this;\n    }\n    /**\n     * Closes the transport.\n     *\n     * @api public\n     */\n    close() {\n        if (\"opening\" === this.readyState || \"open\" === this.readyState) {\n            this.doClose();\n            this.onClose();\n        }\n        return this;\n    }\n    /**\n     * Sends multiple packets.\n     *\n     * @param {Array} packets\n     * @api public\n     */\n    send(packets) {\n        if (\"open\" === this.readyState) {\n            this.write(packets);\n        }\n        else {\n            // this might happen if the transport was silently closed in the beforeunload event handler\n        }\n    }\n    /**\n     * Called upon open\n     *\n     * @api protected\n     */\n    onOpen() {\n        this.readyState = \"open\";\n        this.writable = true;\n        super.emit(\"open\");\n    }\n    /**\n     * Called with data.\n     *\n     * @param {String} data\n     * @api protected\n     */\n    onData(data) {\n        const packet = decodePacket(data, this.socket.binaryType);\n        this.onPacket(packet);\n    }\n    /**\n     * Called with a decoded packet.\n     *\n     * @api protected\n     */\n    onPacket(packet) {\n        super.emit(\"packet\", packet);\n    }\n    /**\n     * Called upon close.\n     *\n     * @api protected\n     */\n    onClose() {\n        this.readyState = \"closed\";\n        super.emit(\"close\");\n    }\n}\n","/**\n * Compiles a querystring\n * Returns string representation of the object\n *\n * @param {Object}\n * @api private\n */\n\nexports.encode = function (obj) {\n  var str = '';\n\n  for (var i in obj) {\n    if (obj.hasOwnProperty(i)) {\n      if (str.length) str += '&';\n      str += encodeURIComponent(i) + '=' + encodeURIComponent(obj[i]);\n    }\n  }\n\n  return str;\n};\n\n/**\n * Parses a simple querystring into an object\n *\n * @param {String} qs\n * @api private\n */\n\nexports.decode = function(qs){\n  var qry = {};\n  var pairs = qs.split('&');\n  for (var i = 0, l = pairs.length; i < l; i++) {\n    var pair = pairs[i].split('=');\n    qry[decodeURIComponent(pair[0])] = decodeURIComponent(pair[1]);\n  }\n  return qry;\n};\n","import { Transport } from \"../transport.js\";\nimport yeast from \"yeast\";\nimport parseqs from \"parseqs\";\nimport { encodePayload, decodePayload } from \"engine.io-parser\";\nexport class Polling extends Transport {\n    constructor() {\n        super(...arguments);\n        this.polling = false;\n    }\n    /**\n     * Transport name.\n     */\n    get name() {\n        return \"polling\";\n    }\n    /**\n     * Opens the socket (triggers polling). We write a PING message to determine\n     * when the transport is open.\n     *\n     * @api private\n     */\n    doOpen() {\n        this.poll();\n    }\n    /**\n     * Pauses polling.\n     *\n     * @param {Function} callback upon buffers are flushed and transport is paused\n     * @api private\n     */\n    pause(onPause) {\n        this.readyState = \"pausing\";\n        const pause = () => {\n            this.readyState = \"paused\";\n            onPause();\n        };\n        if (this.polling || !this.writable) {\n            let total = 0;\n            if (this.polling) {\n                total++;\n                this.once(\"pollComplete\", function () {\n                    --total || pause();\n                });\n            }\n            if (!this.writable) {\n                total++;\n                this.once(\"drain\", function () {\n                    --total || pause();\n                });\n            }\n        }\n        else {\n            pause();\n        }\n    }\n    /**\n     * Starts polling cycle.\n     *\n     * @api public\n     */\n    poll() {\n        this.polling = true;\n        this.doPoll();\n        this.emit(\"poll\");\n    }\n    /**\n     * Overloads onData to detect payloads.\n     *\n     * @api private\n     */\n    onData(data) {\n        const callback = packet => {\n            // if its the first message we consider the transport open\n            if (\"opening\" === this.readyState && packet.type === \"open\") {\n                this.onOpen();\n            }\n            // if its a close packet, we close the ongoing requests\n            if (\"close\" === packet.type) {\n                this.onClose();\n                return false;\n            }\n            // otherwise bypass onData and handle the message\n            this.onPacket(packet);\n        };\n        // decode payload\n        decodePayload(data, this.socket.binaryType).forEach(callback);\n        // if an event did not trigger closing\n        if (\"closed\" !== this.readyState) {\n            // if we got data we're not polling\n            this.polling = false;\n            this.emit(\"pollComplete\");\n            if (\"open\" === this.readyState) {\n                this.poll();\n            }\n            else {\n            }\n        }\n    }\n    /**\n     * For polling, send a close packet.\n     *\n     * @api private\n     */\n    doClose() {\n        const close = () => {\n            this.write([{ type: \"close\" }]);\n        };\n        if (\"open\" === this.readyState) {\n            close();\n        }\n        else {\n            // in case we're trying to close while\n            // handshaking is in progress (GH-164)\n            this.once(\"open\", close);\n        }\n    }\n    /**\n     * Writes a packets payload.\n     *\n     * @param {Array} data packets\n     * @param {Function} drain callback\n     * @api private\n     */\n    write(packets) {\n        this.writable = false;\n        encodePayload(packets, data => {\n            this.doWrite(data, () => {\n                this.writable = true;\n                this.emit(\"drain\");\n            });\n        });\n    }\n    /**\n     * Generates uri for connection.\n     *\n     * @api private\n     */\n    uri() {\n        let query = this.query || {};\n        const schema = this.opts.secure ? \"https\" : \"http\";\n        let port = \"\";\n        // cache busting is forced\n        if (false !== this.opts.timestampRequests) {\n            query[this.opts.timestampParam] = yeast();\n        }\n        if (!this.supportsBinary && !query.sid) {\n            query.b64 = 1;\n        }\n        // avoid port if default for schema\n        if (this.opts.port &&\n            ((\"https\" === schema && Number(this.opts.port) !== 443) ||\n                (\"http\" === schema && Number(this.opts.port) !== 80))) {\n            port = \":\" + this.opts.port;\n        }\n        const encodedQuery = parseqs.encode(query);\n        const ipv6 = this.opts.hostname.indexOf(\":\") !== -1;\n        return (schema +\n            \"://\" +\n            (ipv6 ? \"[\" + this.opts.hostname + \"]\" : this.opts.hostname) +\n            port +\n            this.opts.path +\n            (encodedQuery.length ? \"?\" + encodedQuery : \"\"));\n    }\n}\n","/* global attachEvent */\nimport XMLHttpRequest from \"./xmlhttprequest.js\";\nimport globalThis from \"../globalThis.js\";\nimport { installTimerFunctions, pick } from \"../util.js\";\nimport { Emitter } from \"@socket.io/component-emitter\";\nimport { Polling } from \"./polling.js\";\n/**\n * Empty function\n */\nfunction empty() { }\nconst hasXHR2 = (function () {\n    const xhr = new XMLHttpRequest({\n        xdomain: false\n    });\n    return null != xhr.responseType;\n})();\nexport class XHR extends Polling {\n    /**\n     * XHR Polling constructor.\n     *\n     * @param {Object} opts\n     * @api public\n     */\n    constructor(opts) {\n        super(opts);\n        if (typeof location !== \"undefined\") {\n            const isSSL = \"https:\" === location.protocol;\n            let port = location.port;\n            // some user agents have empty `location.port`\n            if (!port) {\n                port = isSSL ? \"443\" : \"80\";\n            }\n            this.xd =\n                (typeof location !== \"undefined\" &&\n                    opts.hostname !== location.hostname) ||\n                    port !== opts.port;\n            this.xs = opts.secure !== isSSL;\n        }\n        /**\n         * XHR supports binary\n         */\n        const forceBase64 = opts && opts.forceBase64;\n        this.supportsBinary = hasXHR2 && !forceBase64;\n    }\n    /**\n     * Creates a request.\n     *\n     * @param {String} method\n     * @api private\n     */\n    request(opts = {}) {\n        Object.assign(opts, { xd: this.xd, xs: this.xs }, this.opts);\n        return new Request(this.uri(), opts);\n    }\n    /**\n     * Sends data.\n     *\n     * @param {String} data to send.\n     * @param {Function} called upon flush.\n     * @api private\n     */\n    doWrite(data, fn) {\n        const req = this.request({\n            method: \"POST\",\n            data: data\n        });\n        req.on(\"success\", fn);\n        req.on(\"error\", err => {\n            this.onError(\"xhr post error\", err);\n        });\n    }\n    /**\n     * Starts a poll cycle.\n     *\n     * @api private\n     */\n    doPoll() {\n        const req = this.request();\n        req.on(\"data\", this.onData.bind(this));\n        req.on(\"error\", err => {\n            this.onError(\"xhr poll error\", err);\n        });\n        this.pollXhr = req;\n    }\n}\nexport class Request extends Emitter {\n    /**\n     * Request constructor\n     *\n     * @param {Object} options\n     * @api public\n     */\n    constructor(uri, opts) {\n        super();\n        installTimerFunctions(this, opts);\n        this.opts = opts;\n        this.method = opts.method || \"GET\";\n        this.uri = uri;\n        this.async = false !== opts.async;\n        this.data = undefined !== opts.data ? opts.data : null;\n        this.create();\n    }\n    /**\n     * Creates the XHR object and sends the request.\n     *\n     * @api private\n     */\n    create() {\n        const opts = pick(this.opts, \"agent\", \"pfx\", \"key\", \"passphrase\", \"cert\", \"ca\", \"ciphers\", \"rejectUnauthorized\", \"autoUnref\");\n        opts.xdomain = !!this.opts.xd;\n        opts.xscheme = !!this.opts.xs;\n        const xhr = (this.xhr = new XMLHttpRequest(opts));\n        try {\n            xhr.open(this.method, this.uri, this.async);\n            try {\n                if (this.opts.extraHeaders) {\n                    xhr.setDisableHeaderCheck && xhr.setDisableHeaderCheck(true);\n                    for (let i in this.opts.extraHeaders) {\n                        if (this.opts.extraHeaders.hasOwnProperty(i)) {\n                            xhr.setRequestHeader(i, this.opts.extraHeaders[i]);\n                        }\n                    }\n                }\n            }\n            catch (e) { }\n            if (\"POST\" === this.method) {\n                try {\n                    xhr.setRequestHeader(\"Content-type\", \"text/plain;charset=UTF-8\");\n                }\n                catch (e) { }\n            }\n            try {\n                xhr.setRequestHeader(\"Accept\", \"*/*\");\n            }\n            catch (e) { }\n            // ie6 check\n            if (\"withCredentials\" in xhr) {\n                xhr.withCredentials = this.opts.withCredentials;\n            }\n            if (this.opts.requestTimeout) {\n                xhr.timeout = this.opts.requestTimeout;\n            }\n            xhr.onreadystatechange = () => {\n                if (4 !== xhr.readyState)\n                    return;\n                if (200 === xhr.status || 1223 === xhr.status) {\n                    this.onLoad();\n                }\n                else {\n                    // make sure the `error` event handler that's user-set\n                    // does not throw in the same tick and gets caught here\n                    this.setTimeoutFn(() => {\n                        this.onError(typeof xhr.status === \"number\" ? xhr.status : 0);\n                    }, 0);\n                }\n            };\n            xhr.send(this.data);\n        }\n        catch (e) {\n            // Need to defer since .create() is called directly from the constructor\n            // and thus the 'error' event can only be only bound *after* this exception\n            // occurs.  Therefore, also, we cannot throw here at all.\n            this.setTimeoutFn(() => {\n                this.onError(e);\n            }, 0);\n            return;\n        }\n        if (typeof document !== \"undefined\") {\n            this.index = Request.requestsCount++;\n            Request.requests[this.index] = this;\n        }\n    }\n    /**\n     * Called upon successful response.\n     *\n     * @api private\n     */\n    onSuccess() {\n        this.emit(\"success\");\n        this.cleanup();\n    }\n    /**\n     * Called if we have data.\n     *\n     * @api private\n     */\n    onData(data) {\n        this.emit(\"data\", data);\n        this.onSuccess();\n    }\n    /**\n     * Called upon error.\n     *\n     * @api private\n     */\n    onError(err) {\n        this.emit(\"error\", err);\n        this.cleanup(true);\n    }\n    /**\n     * Cleans up house.\n     *\n     * @api private\n     */\n    cleanup(fromError) {\n        if (\"undefined\" === typeof this.xhr || null === this.xhr) {\n            return;\n        }\n        this.xhr.onreadystatechange = empty;\n        if (fromError) {\n            try {\n                this.xhr.abort();\n            }\n            catch (e) { }\n        }\n        if (typeof document !== \"undefined\") {\n            delete Request.requests[this.index];\n        }\n        this.xhr = null;\n    }\n    /**\n     * Called upon load.\n     *\n     * @api private\n     */\n    onLoad() {\n        const data = this.xhr.responseText;\n        if (data !== null) {\n            this.onData(data);\n        }\n    }\n    /**\n     * Aborts the request.\n     *\n     * @api public\n     */\n    abort() {\n        this.cleanup();\n    }\n}\nRequest.requestsCount = 0;\nRequest.requests = {};\n/**\n * Aborts pending requests when unloading the window. This is needed to prevent\n * memory leaks (e.g. when using IE) and to ensure that no spurious error is\n * emitted.\n */\nif (typeof document !== \"undefined\") {\n    // @ts-ignore\n    if (typeof attachEvent === \"function\") {\n        // @ts-ignore\n        attachEvent(\"onunload\", unloadHandler);\n    }\n    else if (typeof addEventListener === \"function\") {\n        const terminationEvent = \"onpagehide\" in globalThis ? \"pagehide\" : \"unload\";\n        addEventListener(terminationEvent, unloadHandler, false);\n    }\n}\nfunction unloadHandler() {\n    for (let i in Request.requests) {\n        if (Request.requests.hasOwnProperty(i)) {\n            Request.requests[i].abort();\n        }\n    }\n}\n","import globalThis from \"../globalThis.js\";\nexport const nextTick = (() => {\n    const isPromiseAvailable = typeof Promise === \"function\" && typeof Promise.resolve === \"function\";\n    if (isPromiseAvailable) {\n        return cb => Promise.resolve().then(cb);\n    }\n    else {\n        return (cb, setTimeoutFn) => setTimeoutFn(cb, 0);\n    }\n})();\nexport const WebSocket = globalThis.WebSocket || globalThis.MozWebSocket;\nexport const usingBrowserWebSocket = true;\nexport const defaultBinaryType = \"arraybuffer\";\n","import { Transport } from \"../transport.js\";\nimport parseqs from \"parseqs\";\nimport yeast from \"yeast\";\nimport { pick } from \"../util.js\";\nimport { defaultBinaryType, nextTick, usingBrowserWebSocket, WebSocket } from \"./websocket-constructor.js\";\nimport { encodePacket } from \"engine.io-parser\";\n// detect ReactNative environment\nconst isReactNative = typeof navigator !== \"undefined\" &&\n    typeof navigator.product === \"string\" &&\n    navigator.product.toLowerCase() === \"reactnative\";\nexport class WS extends Transport {\n    /**\n     * WebSocket transport constructor.\n     *\n     * @api {Object} connection options\n     * @api public\n     */\n    constructor(opts) {\n        super(opts);\n        this.supportsBinary = !opts.forceBase64;\n    }\n    /**\n     * Transport name.\n     *\n     * @api public\n     */\n    get name() {\n        return \"websocket\";\n    }\n    /**\n     * Opens socket.\n     *\n     * @api private\n     */\n    doOpen() {\n        if (!this.check()) {\n            // let probe timeout\n            return;\n        }\n        const uri = this.uri();\n        const protocols = this.opts.protocols;\n        // React Native only supports the 'headers' option, and will print a warning if anything else is passed\n        const opts = isReactNative\n            ? {}\n            : pick(this.opts, \"agent\", \"perMessageDeflate\", \"pfx\", \"key\", \"passphrase\", \"cert\", \"ca\", \"ciphers\", \"rejectUnauthorized\", \"localAddress\", \"protocolVersion\", \"origin\", \"maxPayload\", \"family\", \"checkServerIdentity\");\n        if (this.opts.extraHeaders) {\n            opts.headers = this.opts.extraHeaders;\n        }\n        try {\n            this.ws =\n                usingBrowserWebSocket && !isReactNative\n                    ? protocols\n                        ? new WebSocket(uri, protocols)\n                        : new WebSocket(uri)\n                    : new WebSocket(uri, protocols, opts);\n        }\n        catch (err) {\n            return this.emit(\"error\", err);\n        }\n        this.ws.binaryType = this.socket.binaryType || defaultBinaryType;\n        this.addEventListeners();\n    }\n    /**\n     * Adds event listeners to the socket\n     *\n     * @api private\n     */\n    addEventListeners() {\n        this.ws.onopen = () => {\n            if (this.opts.autoUnref) {\n                this.ws._socket.unref();\n            }\n            this.onOpen();\n        };\n        this.ws.onclose = this.onClose.bind(this);\n        this.ws.onmessage = ev => this.onData(ev.data);\n        this.ws.onerror = e => this.onError(\"websocket error\", e);\n    }\n    /**\n     * Writes data to socket.\n     *\n     * @param {Array} array of packets.\n     * @api private\n     */\n    write(packets) {\n        this.writable = false;\n        // encodePacket efficient as it uses WS framing\n        // no need for encodePayload\n        for (let i = 0; i < packets.length; i++) {\n            const packet = packets[i];\n            const lastPacket = i === packets.length - 1;\n            encodePacket(packet, this.supportsBinary, data => {\n                // always create a new object (GH-437)\n                const opts = {};\n                if (!usingBrowserWebSocket) {\n                    if (packet.options) {\n                        opts.compress = packet.options.compress;\n                    }\n                    if (this.opts.perMessageDeflate) {\n                        const len = \"string\" === typeof data ? Buffer.byteLength(data) : data.length;\n                        if (len < this.opts.perMessageDeflate.threshold) {\n                            opts.compress = false;\n                        }\n                    }\n                }\n                // Sometimes the websocket has already been closed but the browser didn't\n                // have a chance of informing us about it yet, in that case send will\n                // throw an error\n                try {\n                    if (usingBrowserWebSocket) {\n                        // TypeError is thrown when passing the second argument on Safari\n                        this.ws.send(data);\n                    }\n                    else {\n                        this.ws.send(data, opts);\n                    }\n                }\n                catch (e) {\n                }\n                if (lastPacket) {\n                    // fake drain\n                    // defer to next tick to allow Socket to clear writeBuffer\n                    nextTick(() => {\n                        this.writable = true;\n                        this.emit(\"drain\");\n                    }, this.setTimeoutFn);\n                }\n            });\n        }\n    }\n    /**\n     * Closes socket.\n     *\n     * @api private\n     */\n    doClose() {\n        if (typeof this.ws !== \"undefined\") {\n            this.ws.close();\n            this.ws = null;\n        }\n    }\n    /**\n     * Generates uri for connection.\n     *\n     * @api private\n     */\n    uri() {\n        let query = this.query || {};\n        const schema = this.opts.secure ? \"wss\" : \"ws\";\n        let port = \"\";\n        // avoid port if default for schema\n        if (this.opts.port &&\n            ((\"wss\" === schema && Number(this.opts.port) !== 443) ||\n                (\"ws\" === schema && Number(this.opts.port) !== 80))) {\n            port = \":\" + this.opts.port;\n        }\n        // append timestamp to URI\n        if (this.opts.timestampRequests) {\n            query[this.opts.timestampParam] = yeast();\n        }\n        // communicate binary support capabilities\n        if (!this.supportsBinary) {\n            query.b64 = 1;\n        }\n        const encodedQuery = parseqs.encode(query);\n        const ipv6 = this.opts.hostname.indexOf(\":\") !== -1;\n        return (schema +\n            \"://\" +\n            (ipv6 ? \"[\" + this.opts.hostname + \"]\" : this.opts.hostname) +\n            port +\n            this.opts.path +\n            (encodedQuery.length ? \"?\" + encodedQuery : \"\"));\n    }\n    /**\n     * Feature detection for WebSocket.\n     *\n     * @return {Boolean} whether this transport is available.\n     * @api public\n     */\n    check() {\n        return (!!WebSocket &&\n            !(\"__initialize\" in WebSocket && this.name === WS.prototype.name));\n    }\n}\n","import { XHR } from \"./polling-xhr.js\";\nimport { WS } from \"./websocket.js\";\nexport const transports = {\n    websocket: WS,\n    polling: XHR\n};\n","import { transports } from \"./transports/index.js\";\nimport { installTimerFunctions } from \"./util.js\";\nimport parseqs from \"parseqs\";\nimport parseuri from \"parseuri\";\nimport { Emitter } from \"@socket.io/component-emitter\";\nimport { protocol } from \"engine.io-parser\";\nexport class Socket extends Emitter {\n    /**\n     * Socket constructor.\n     *\n     * @param {String|Object} uri or options\n     * @param {Object} opts - options\n     * @api public\n     */\n    constructor(uri, opts = {}) {\n        super();\n        if (uri && \"object\" === typeof uri) {\n            opts = uri;\n            uri = null;\n        }\n        if (uri) {\n            uri = parseuri(uri);\n            opts.hostname = uri.host;\n            opts.secure = uri.protocol === \"https\" || uri.protocol === \"wss\";\n            opts.port = uri.port;\n            if (uri.query)\n                opts.query = uri.query;\n        }\n        else if (opts.host) {\n            opts.hostname = parseuri(opts.host).host;\n        }\n        installTimerFunctions(this, opts);\n        this.secure =\n            null != opts.secure\n                ? opts.secure\n                : typeof location !== \"undefined\" && \"https:\" === location.protocol;\n        if (opts.hostname && !opts.port) {\n            // if no port is specified manually, use the protocol default\n            opts.port = this.secure ? \"443\" : \"80\";\n        }\n        this.hostname =\n            opts.hostname ||\n                (typeof location !== \"undefined\" ? location.hostname : \"localhost\");\n        this.port =\n            opts.port ||\n                (typeof location !== \"undefined\" && location.port\n                    ? location.port\n                    : this.secure\n                        ? \"443\"\n                        : \"80\");\n        this.transports = opts.transports || [\"polling\", \"websocket\"];\n        this.readyState = \"\";\n        this.writeBuffer = [];\n        this.prevBufferLen = 0;\n        this.opts = Object.assign({\n            path: \"/engine.io\",\n            agent: false,\n            withCredentials: false,\n            upgrade: true,\n            timestampParam: \"t\",\n            rememberUpgrade: false,\n            rejectUnauthorized: true,\n            perMessageDeflate: {\n                threshold: 1024\n            },\n            transportOptions: {},\n            closeOnBeforeunload: true\n        }, opts);\n        this.opts.path = this.opts.path.replace(/\\/$/, \"\") + \"/\";\n        if (typeof this.opts.query === \"string\") {\n            this.opts.query = parseqs.decode(this.opts.query);\n        }\n        // set on handshake\n        this.id = null;\n        this.upgrades = null;\n        this.pingInterval = null;\n        this.pingTimeout = null;\n        // set on heartbeat\n        this.pingTimeoutTimer = null;\n        if (typeof addEventListener === \"function\") {\n            if (this.opts.closeOnBeforeunload) {\n                // Firefox closes the connection when the \"beforeunload\" event is emitted but not Chrome. This event listener\n                // ensures every browser behaves the same (no \"disconnect\" event at the Socket.IO level when the page is\n                // closed/reloaded)\n                addEventListener(\"beforeunload\", () => {\n                    if (this.transport) {\n                        // silently close the transport\n                        this.transport.removeAllListeners();\n                        this.transport.close();\n                    }\n                }, false);\n            }\n            if (this.hostname !== \"localhost\") {\n                this.offlineEventListener = () => {\n                    this.onClose(\"transport close\");\n                };\n                addEventListener(\"offline\", this.offlineEventListener, false);\n            }\n        }\n        this.open();\n    }\n    /**\n     * Creates transport of the given type.\n     *\n     * @param {String} transport name\n     * @return {Transport}\n     * @api private\n     */\n    createTransport(name) {\n        const query = clone(this.opts.query);\n        // append engine.io protocol identifier\n        query.EIO = protocol;\n        // transport name\n        query.transport = name;\n        // session id if we already have one\n        if (this.id)\n            query.sid = this.id;\n        const opts = Object.assign({}, this.opts.transportOptions[name], this.opts, {\n            query,\n            socket: this,\n            hostname: this.hostname,\n            secure: this.secure,\n            port: this.port\n        });\n        return new transports[name](opts);\n    }\n    /**\n     * Initializes transport to use and starts probe.\n     *\n     * @api private\n     */\n    open() {\n        let transport;\n        if (this.opts.rememberUpgrade &&\n            Socket.priorWebsocketSuccess &&\n            this.transports.indexOf(\"websocket\") !== -1) {\n            transport = \"websocket\";\n        }\n        else if (0 === this.transports.length) {\n            // Emit error on next tick so it can be listened to\n            this.setTimeoutFn(() => {\n                this.emitReserved(\"error\", \"No transports available\");\n            }, 0);\n            return;\n        }\n        else {\n            transport = this.transports[0];\n        }\n        this.readyState = \"opening\";\n        // Retry with the next transport if the transport is disabled (jsonp: false)\n        try {\n            transport = this.createTransport(transport);\n        }\n        catch (e) {\n            this.transports.shift();\n            this.open();\n            return;\n        }\n        transport.open();\n        this.setTransport(transport);\n    }\n    /**\n     * Sets the current transport. Disables the existing one (if any).\n     *\n     * @api private\n     */\n    setTransport(transport) {\n        if (this.transport) {\n            this.transport.removeAllListeners();\n        }\n        // set up transport\n        this.transport = transport;\n        // set up transport listeners\n        transport\n            .on(\"drain\", this.onDrain.bind(this))\n            .on(\"packet\", this.onPacket.bind(this))\n            .on(\"error\", this.onError.bind(this))\n            .on(\"close\", () => {\n            this.onClose(\"transport close\");\n        });\n    }\n    /**\n     * Probes a transport.\n     *\n     * @param {String} transport name\n     * @api private\n     */\n    probe(name) {\n        let transport = this.createTransport(name);\n        let failed = false;\n        Socket.priorWebsocketSuccess = false;\n        const onTransportOpen = () => {\n            if (failed)\n                return;\n            transport.send([{ type: \"ping\", data: \"probe\" }]);\n            transport.once(\"packet\", msg => {\n                if (failed)\n                    return;\n                if (\"pong\" === msg.type && \"probe\" === msg.data) {\n                    this.upgrading = true;\n                    this.emitReserved(\"upgrading\", transport);\n                    if (!transport)\n                        return;\n                    Socket.priorWebsocketSuccess = \"websocket\" === transport.name;\n                    this.transport.pause(() => {\n                        if (failed)\n                            return;\n                        if (\"closed\" === this.readyState)\n                            return;\n                        cleanup();\n                        this.setTransport(transport);\n                        transport.send([{ type: \"upgrade\" }]);\n                        this.emitReserved(\"upgrade\", transport);\n                        transport = null;\n                        this.upgrading = false;\n                        this.flush();\n                    });\n                }\n                else {\n                    const err = new Error(\"probe error\");\n                    // @ts-ignore\n                    err.transport = transport.name;\n                    this.emitReserved(\"upgradeError\", err);\n                }\n            });\n        };\n        function freezeTransport() {\n            if (failed)\n                return;\n            // Any callback called by transport should be ignored since now\n            failed = true;\n            cleanup();\n            transport.close();\n            transport = null;\n        }\n        // Handle any error that happens while probing\n        const onerror = err => {\n            const error = new Error(\"probe error: \" + err);\n            // @ts-ignore\n            error.transport = transport.name;\n            freezeTransport();\n            this.emitReserved(\"upgradeError\", error);\n        };\n        function onTransportClose() {\n            onerror(\"transport closed\");\n        }\n        // When the socket is closed while we're probing\n        function onclose() {\n            onerror(\"socket closed\");\n        }\n        // When the socket is upgraded while we're probing\n        function onupgrade(to) {\n            if (transport && to.name !== transport.name) {\n                freezeTransport();\n            }\n        }\n        // Remove all listeners on the transport and on self\n        const cleanup = () => {\n            transport.removeListener(\"open\", onTransportOpen);\n            transport.removeListener(\"error\", onerror);\n            transport.removeListener(\"close\", onTransportClose);\n            this.off(\"close\", onclose);\n            this.off(\"upgrading\", onupgrade);\n        };\n        transport.once(\"open\", onTransportOpen);\n        transport.once(\"error\", onerror);\n        transport.once(\"close\", onTransportClose);\n        this.once(\"close\", onclose);\n        this.once(\"upgrading\", onupgrade);\n        transport.open();\n    }\n    /**\n     * Called when connection is deemed open.\n     *\n     * @api private\n     */\n    onOpen() {\n        this.readyState = \"open\";\n        Socket.priorWebsocketSuccess = \"websocket\" === this.transport.name;\n        this.emitReserved(\"open\");\n        this.flush();\n        // we check for `readyState` in case an `open`\n        // listener already closed the socket\n        if (\"open\" === this.readyState &&\n            this.opts.upgrade &&\n            this.transport.pause) {\n            let i = 0;\n            const l = this.upgrades.length;\n            for (; i < l; i++) {\n                this.probe(this.upgrades[i]);\n            }\n        }\n    }\n    /**\n     * Handles a packet.\n     *\n     * @api private\n     */\n    onPacket(packet) {\n        if (\"opening\" === this.readyState ||\n            \"open\" === this.readyState ||\n            \"closing\" === this.readyState) {\n            this.emitReserved(\"packet\", packet);\n            // Socket is live - any packet counts\n            this.emitReserved(\"heartbeat\");\n            switch (packet.type) {\n                case \"open\":\n                    this.onHandshake(JSON.parse(packet.data));\n                    break;\n                case \"ping\":\n                    this.resetPingTimeout();\n                    this.sendPacket(\"pong\");\n                    this.emitReserved(\"ping\");\n                    this.emitReserved(\"pong\");\n                    break;\n                case \"error\":\n                    const err = new Error(\"server error\");\n                    // @ts-ignore\n                    err.code = packet.data;\n                    this.onError(err);\n                    break;\n                case \"message\":\n                    this.emitReserved(\"data\", packet.data);\n                    this.emitReserved(\"message\", packet.data);\n                    break;\n            }\n        }\n        else {\n        }\n    }\n    /**\n     * Called upon handshake completion.\n     *\n     * @param {Object} data - handshake obj\n     * @api private\n     */\n    onHandshake(data) {\n        this.emitReserved(\"handshake\", data);\n        this.id = data.sid;\n        this.transport.query.sid = data.sid;\n        this.upgrades = this.filterUpgrades(data.upgrades);\n        this.pingInterval = data.pingInterval;\n        this.pingTimeout = data.pingTimeout;\n        this.onOpen();\n        // In case open handler closes socket\n        if (\"closed\" === this.readyState)\n            return;\n        this.resetPingTimeout();\n    }\n    /**\n     * Sets and resets ping timeout timer based on server pings.\n     *\n     * @api private\n     */\n    resetPingTimeout() {\n        this.clearTimeoutFn(this.pingTimeoutTimer);\n        this.pingTimeoutTimer = this.setTimeoutFn(() => {\n            this.onClose(\"ping timeout\");\n        }, this.pingInterval + this.pingTimeout);\n        if (this.opts.autoUnref) {\n            this.pingTimeoutTimer.unref();\n        }\n    }\n    /**\n     * Called on `drain` event\n     *\n     * @api private\n     */\n    onDrain() {\n        this.writeBuffer.splice(0, this.prevBufferLen);\n        // setting prevBufferLen = 0 is very important\n        // for example, when upgrading, upgrade packet is sent over,\n        // and a nonzero prevBufferLen could cause problems on `drain`\n        this.prevBufferLen = 0;\n        if (0 === this.writeBuffer.length) {\n            this.emitReserved(\"drain\");\n        }\n        else {\n            this.flush();\n        }\n    }\n    /**\n     * Flush write buffers.\n     *\n     * @api private\n     */\n    flush() {\n        if (\"closed\" !== this.readyState &&\n            this.transport.writable &&\n            !this.upgrading &&\n            this.writeBuffer.length) {\n            this.transport.send(this.writeBuffer);\n            // keep track of current length of writeBuffer\n            // splice writeBuffer and callbackBuffer on `drain`\n            this.prevBufferLen = this.writeBuffer.length;\n            this.emitReserved(\"flush\");\n        }\n    }\n    /**\n     * Sends a message.\n     *\n     * @param {String} message.\n     * @param {Function} callback function.\n     * @param {Object} options.\n     * @return {Socket} for chaining.\n     * @api public\n     */\n    write(msg, options, fn) {\n        this.sendPacket(\"message\", msg, options, fn);\n        return this;\n    }\n    send(msg, options, fn) {\n        this.sendPacket(\"message\", msg, options, fn);\n        return this;\n    }\n    /**\n     * Sends a packet.\n     *\n     * @param {String} packet type.\n     * @param {String} data.\n     * @param {Object} options.\n     * @param {Function} callback function.\n     * @api private\n     */\n    sendPacket(type, data, options, fn) {\n        if (\"function\" === typeof data) {\n            fn = data;\n            data = undefined;\n        }\n        if (\"function\" === typeof options) {\n            fn = options;\n            options = null;\n        }\n        if (\"closing\" === this.readyState || \"closed\" === this.readyState) {\n            return;\n        }\n        options = options || {};\n        options.compress = false !== options.compress;\n        const packet = {\n            type: type,\n            data: data,\n            options: options\n        };\n        this.emitReserved(\"packetCreate\", packet);\n        this.writeBuffer.push(packet);\n        if (fn)\n            this.once(\"flush\", fn);\n        this.flush();\n    }\n    /**\n     * Closes the connection.\n     *\n     * @api public\n     */\n    close() {\n        const close = () => {\n            this.onClose(\"forced close\");\n            this.transport.close();\n        };\n        const cleanupAndClose = () => {\n            this.off(\"upgrade\", cleanupAndClose);\n            this.off(\"upgradeError\", cleanupAndClose);\n            close();\n        };\n        const waitForUpgrade = () => {\n            // wait for upgrade to finish since we can't send packets while pausing a transport\n            this.once(\"upgrade\", cleanupAndClose);\n            this.once(\"upgradeError\", cleanupAndClose);\n        };\n        if (\"opening\" === this.readyState || \"open\" === this.readyState) {\n            this.readyState = \"closing\";\n            if (this.writeBuffer.length) {\n                this.once(\"drain\", () => {\n                    if (this.upgrading) {\n                        waitForUpgrade();\n                    }\n                    else {\n                        close();\n                    }\n                });\n            }\n            else if (this.upgrading) {\n                waitForUpgrade();\n            }\n            else {\n                close();\n            }\n        }\n        return this;\n    }\n    /**\n     * Called upon transport error\n     *\n     * @api private\n     */\n    onError(err) {\n        Socket.priorWebsocketSuccess = false;\n        this.emitReserved(\"error\", err);\n        this.onClose(\"transport error\", err);\n    }\n    /**\n     * Called upon transport close.\n     *\n     * @api private\n     */\n    onClose(reason, desc) {\n        if (\"opening\" === this.readyState ||\n            \"open\" === this.readyState ||\n            \"closing\" === this.readyState) {\n            // clear timers\n            this.clearTimeoutFn(this.pingTimeoutTimer);\n            // stop event from firing again for transport\n            this.transport.removeAllListeners(\"close\");\n            // ensure transport won't stay open\n            this.transport.close();\n            // ignore further transport communication\n            this.transport.removeAllListeners();\n            if (typeof removeEventListener === \"function\") {\n                removeEventListener(\"offline\", this.offlineEventListener, false);\n            }\n            // set ready state\n            this.readyState = \"closed\";\n            // clear session id\n            this.id = null;\n            // emit close event\n            this.emitReserved(\"close\", reason, desc);\n            // clean buffers after, so users can still\n            // grab the buffers on `close` event\n            this.writeBuffer = [];\n            this.prevBufferLen = 0;\n        }\n    }\n    /**\n     * Filters upgrades, returning only those matching client transports.\n     *\n     * @param {Array} server upgrades\n     * @api private\n     *\n     */\n    filterUpgrades(upgrades) {\n        const filteredUpgrades = [];\n        let i = 0;\n        const j = upgrades.length;\n        for (; i < j; i++) {\n            if (~this.transports.indexOf(upgrades[i]))\n                filteredUpgrades.push(upgrades[i]);\n        }\n        return filteredUpgrades;\n    }\n}\nSocket.protocol = protocol;\nfunction clone(obj) {\n    const o = {};\n    for (let i in obj) {\n        if (obj.hasOwnProperty(i)) {\n            o[i] = obj[i];\n        }\n    }\n    return o;\n}\n","'use strict';\n\nfunction utf8Write(view, offset, str) {\n  var c = 0;\n  for (var i = 0, l = str.length; i < l; i++) {\n    c = str.charCodeAt(i);\n    if (c < 0x80) {\n      view.setUint8(offset++, c);\n    }\n    else if (c < 0x800) {\n      view.setUint8(offset++, 0xc0 | (c >> 6));\n      view.setUint8(offset++, 0x80 | (c & 0x3f));\n    }\n    else if (c < 0xd800 || c >= 0xe000) {\n      view.setUint8(offset++, 0xe0 | (c >> 12));\n      view.setUint8(offset++, 0x80 | (c >> 6) & 0x3f);\n      view.setUint8(offset++, 0x80 | (c & 0x3f));\n    }\n    else {\n      i++;\n      c = 0x10000 + (((c & 0x3ff) << 10) | (str.charCodeAt(i) & 0x3ff));\n      view.setUint8(offset++, 0xf0 | (c >> 18));\n      view.setUint8(offset++, 0x80 | (c >> 12) & 0x3f);\n      view.setUint8(offset++, 0x80 | (c >> 6) & 0x3f);\n      view.setUint8(offset++, 0x80 | (c & 0x3f));\n    }\n  }\n}\n\nfunction utf8Length(str) {\n  var c = 0, length = 0;\n  for (var i = 0, l = str.length; i < l; i++) {\n    c = str.charCodeAt(i);\n    if (c < 0x80) {\n      length += 1;\n    }\n    else if (c < 0x800) {\n      length += 2;\n    }\n    else if (c < 0xd800 || c >= 0xe000) {\n      length += 3;\n    }\n    else {\n      i++;\n      length += 4;\n    }\n  }\n  return length;\n}\n\nfunction _encode(bytes, defers, value) {\n  var type = typeof value, i = 0, l = 0, hi = 0, lo = 0, length = 0, size = 0;\n\n  if (type === 'string') {\n    length = utf8Length(value);\n\n    // fixstr\n    if (length < 0x20) {\n      bytes.push(length | 0xa0);\n      size = 1;\n    }\n    // str 8\n    else if (length < 0x100) {\n      bytes.push(0xd9, length);\n      size = 2;\n    }\n    // str 16\n    else if (length < 0x10000) {\n      bytes.push(0xda, length >> 8, length);\n      size = 3;\n    }\n    // str 32\n    else if (length < 0x100000000) {\n      bytes.push(0xdb, length >> 24, length >> 16, length >> 8, length);\n      size = 5;\n    } else {\n      throw new Error('String too long');\n    }\n    defers.push({ _str: value, _length: length, _offset: bytes.length });\n    return size + length;\n  }\n  if (type === 'number') {\n    // TODO: encode to float 32?\n\n    // float 64\n    if (Math.floor(value) !== value || !isFinite(value)) {\n      bytes.push(0xcb);\n      defers.push({ _float: value, _length: 8, _offset: bytes.length });\n      return 9;\n    }\n\n    if (value >= 0) {\n      // positive fixnum\n      if (value < 0x80) {\n        bytes.push(value);\n        return 1;\n      }\n      // uint 8\n      if (value < 0x100) {\n        bytes.push(0xcc, value);\n        return 2;\n      }\n      // uint 16\n      if (value < 0x10000) {\n        bytes.push(0xcd, value >> 8, value);\n        return 3;\n      }\n      // uint 32\n      if (value < 0x100000000) {\n        bytes.push(0xce, value >> 24, value >> 16, value >> 8, value);\n        return 5;\n      }\n      // uint 64\n      hi = (value / Math.pow(2, 32)) >> 0;\n      lo = value >>> 0;\n      bytes.push(0xcf, hi >> 24, hi >> 16, hi >> 8, hi, lo >> 24, lo >> 16, lo >> 8, lo);\n      return 9;\n    } else {\n      // negative fixnum\n      if (value >= -0x20) {\n        bytes.push(value);\n        return 1;\n      }\n      // int 8\n      if (value >= -0x80) {\n        bytes.push(0xd0, value);\n        return 2;\n      }\n      // int 16\n      if (value >= -0x8000) {\n        bytes.push(0xd1, value >> 8, value);\n        return 3;\n      }\n      // int 32\n      if (value >= -0x80000000) {\n        bytes.push(0xd2, value >> 24, value >> 16, value >> 8, value);\n        return 5;\n      }\n      // int 64\n      hi = Math.floor(value / Math.pow(2, 32));\n      lo = value >>> 0;\n      bytes.push(0xd3, hi >> 24, hi >> 16, hi >> 8, hi, lo >> 24, lo >> 16, lo >> 8, lo);\n      return 9;\n    }\n  }\n  if (type === 'object') {\n    // nil\n    if (value === null) {\n      bytes.push(0xc0);\n      return 1;\n    }\n\n    if (Array.isArray(value)) {\n      length = value.length;\n\n      // fixarray\n      if (length < 0x10) {\n        bytes.push(length | 0x90);\n        size = 1;\n      }\n      // array 16\n      else if (length < 0x10000) {\n        bytes.push(0xdc, length >> 8, length);\n        size = 3;\n      }\n      // array 32\n      else if (length < 0x100000000) {\n        bytes.push(0xdd, length >> 24, length >> 16, length >> 8, length);\n        size = 5;\n      } else {\n        throw new Error('Array too large');\n      }\n      for (i = 0; i < length; i++) {\n        size += _encode(bytes, defers, value[i]);\n      }\n      return size;\n    }\n\n    // fixext 8 / Date\n    if (value instanceof Date) {\n      var time = value.getTime();\n      hi = Math.floor(time / Math.pow(2, 32));\n      lo = time >>> 0;\n      bytes.push(0xd7, 0, hi >> 24, hi >> 16, hi >> 8, hi, lo >> 24, lo >> 16, lo >> 8, lo);\n      return 10;\n    }\n\n    if (value instanceof ArrayBuffer) {\n      length = value.byteLength;\n\n      // bin 8\n      if (length < 0x100) {\n        bytes.push(0xc4, length);\n        size = 2;\n      } else\n      // bin 16\n      if (length < 0x10000) {\n        bytes.push(0xc5, length >> 8, length);\n        size = 3;\n      } else\n      // bin 32\n      if (length < 0x100000000) {\n        bytes.push(0xc6, length >> 24, length >> 16, length >> 8, length);\n        size = 5;\n      } else {\n        throw new Error('Buffer too large');\n      }\n      defers.push({ _bin: value, _length: length, _offset: bytes.length });\n      return size + length;\n    }\n\n    if (typeof value.toJSON === 'function') {\n      return _encode(bytes, defers, value.toJSON());\n    }\n\n    var keys = [], key = '';\n\n    var allKeys = Object.keys(value);\n    for (i = 0, l = allKeys.length; i < l; i++) {\n      key = allKeys[i];\n      if (typeof value[key] !== 'function') {\n        keys.push(key);\n      }\n    }\n    length = keys.length;\n\n    // fixmap\n    if (length < 0x10) {\n      bytes.push(length | 0x80);\n      size = 1;\n    }\n    // map 16\n    else if (length < 0x10000) {\n      bytes.push(0xde, length >> 8, length);\n      size = 3;\n    }\n    // map 32\n    else if (length < 0x100000000) {\n      bytes.push(0xdf, length >> 24, length >> 16, length >> 8, length);\n      size = 5;\n    } else {\n      throw new Error('Object too large');\n    }\n\n    for (i = 0; i < length; i++) {\n      key = keys[i];\n      size += _encode(bytes, defers, key);\n      size += _encode(bytes, defers, value[key]);\n    }\n    return size;\n  }\n  // false/true\n  if (type === 'boolean') {\n    bytes.push(value ? 0xc3 : 0xc2);\n    return 1;\n  }\n  // fixext 1 / undefined\n  if (type === 'undefined') {\n    bytes.push(0xd4, 0, 0);\n    return 3;\n  }\n  throw new Error('Could not encode');\n}\n\nfunction encode(value) {\n  var bytes = [];\n  var defers = [];\n  var size = _encode(bytes, defers, value);\n  var buf = new ArrayBuffer(size);\n  var view = new DataView(buf);\n\n  var deferIndex = 0;\n  var deferWritten = 0;\n  var nextOffset = -1;\n  if (defers.length > 0) {\n    nextOffset = defers[0]._offset;\n  }\n\n  var defer, deferLength = 0, offset = 0;\n  for (var i = 0, l = bytes.length; i < l; i++) {\n    view.setUint8(deferWritten + i, bytes[i]);\n    if (i + 1 !== nextOffset) { continue; }\n    defer = defers[deferIndex];\n    deferLength = defer._length;\n    offset = deferWritten + nextOffset;\n    if (defer._bin) {\n      var bin = new Uint8Array(defer._bin);\n      for (var j = 0; j < deferLength; j++) {\n        view.setUint8(offset + j, bin[j]);\n      }\n    } else if (defer._str) {\n      utf8Write(view, offset, defer._str);\n    } else if (defer._float !== undefined) {\n      view.setFloat64(offset, defer._float);\n    }\n    deferIndex++;\n    deferWritten += deferLength;\n    if (defers[deferIndex]) {\n      nextOffset = defers[deferIndex]._offset;\n    }\n  }\n  return buf;\n}\n\nmodule.exports = encode;\n","'use strict';\n\nfunction Decoder(buffer) {\n  this._offset = 0;\n  if (buffer instanceof ArrayBuffer) {\n    this._buffer = buffer;\n    this._view = new DataView(this._buffer);\n  } else if (ArrayBuffer.isView(buffer)) {\n    this._buffer = buffer.buffer;\n    this._view = new DataView(this._buffer, buffer.byteOffset, buffer.byteLength);\n  } else {\n    throw new Error('Invalid argument');\n  }\n}\n\nfunction utf8Read(view, offset, length) {\n  var string = '', chr = 0;\n  for (var i = offset, end = offset + length; i < end; i++) {\n    var byte = view.getUint8(i);\n    if ((byte & 0x80) === 0x00) {\n      string += String.fromCharCode(byte);\n      continue;\n    }\n    if ((byte & 0xe0) === 0xc0) {\n      string += String.fromCharCode(\n        ((byte & 0x1f) << 6) |\n        (view.getUint8(++i) & 0x3f)\n      );\n      continue;\n    }\n    if ((byte & 0xf0) === 0xe0) {\n      string += String.fromCharCode(\n        ((byte & 0x0f) << 12) |\n        ((view.getUint8(++i) & 0x3f) << 6) |\n        ((view.getUint8(++i) & 0x3f) << 0)\n      );\n      continue;\n    }\n    if ((byte & 0xf8) === 0xf0) {\n      chr = ((byte & 0x07) << 18) |\n        ((view.getUint8(++i) & 0x3f) << 12) |\n        ((view.getUint8(++i) & 0x3f) << 6) |\n        ((view.getUint8(++i) & 0x3f) << 0);\n      if (chr >= 0x010000) { // surrogate pair\n        chr -= 0x010000;\n        string += String.fromCharCode((chr >>> 10) + 0xD800, (chr & 0x3FF) + 0xDC00);\n      } else {\n        string += String.fromCharCode(chr);\n      }\n      continue;\n    }\n    throw new Error('Invalid byte ' + byte.toString(16));\n  }\n  return string;\n}\n\nDecoder.prototype._array = function (length) {\n  var value = new Array(length);\n  for (var i = 0; i < length; i++) {\n    value[i] = this._parse();\n  }\n  return value;\n};\n\nDecoder.prototype._map = function (length) {\n  var key = '', value = {};\n  for (var i = 0; i < length; i++) {\n    key = this._parse();\n    value[key] = this._parse();\n  }\n  return value;\n};\n\nDecoder.prototype._str = function (length) {\n  var value = utf8Read(this._view, this._offset, length);\n  this._offset += length;\n  return value;\n};\n\nDecoder.prototype._bin = function (length) {\n  var value = this._buffer.slice(this._offset, this._offset + length);\n  this._offset += length;\n  return value;\n};\n\nDecoder.prototype._parse = function () {\n  var prefix = this._view.getUint8(this._offset++);\n  var value, length = 0, type = 0, hi = 0, lo = 0;\n\n  if (prefix < 0xc0) {\n    // positive fixint\n    if (prefix < 0x80) {\n      return prefix;\n    }\n    // fixmap\n    if (prefix < 0x90) {\n      return this._map(prefix & 0x0f);\n    }\n    // fixarray\n    if (prefix < 0xa0) {\n      return this._array(prefix & 0x0f);\n    }\n    // fixstr\n    return this._str(prefix & 0x1f);\n  }\n\n  // negative fixint\n  if (prefix > 0xdf) {\n    return (0xff - prefix + 1) * -1;\n  }\n\n  switch (prefix) {\n    // nil\n    case 0xc0:\n      return null;\n    // false\n    case 0xc2:\n      return false;\n    // true\n    case 0xc3:\n      return true;\n\n    // bin\n    case 0xc4:\n      length = this._view.getUint8(this._offset);\n      this._offset += 1;\n      return this._bin(length);\n    case 0xc5:\n      length = this._view.getUint16(this._offset);\n      this._offset += 2;\n      return this._bin(length);\n    case 0xc6:\n      length = this._view.getUint32(this._offset);\n      this._offset += 4;\n      return this._bin(length);\n\n    // ext\n    case 0xc7:\n      length = this._view.getUint8(this._offset);\n      type = this._view.getInt8(this._offset + 1);\n      this._offset += 2;\n      return [type, this._bin(length)];\n    case 0xc8:\n      length = this._view.getUint16(this._offset);\n      type = this._view.getInt8(this._offset + 2);\n      this._offset += 3;\n      return [type, this._bin(length)];\n    case 0xc9:\n      length = this._view.getUint32(this._offset);\n      type = this._view.getInt8(this._offset + 4);\n      this._offset += 5;\n      return [type, this._bin(length)];\n\n    // float\n    case 0xca:\n      value = this._view.getFloat32(this._offset);\n      this._offset += 4;\n      return value;\n    case 0xcb:\n      value = this._view.getFloat64(this._offset);\n      this._offset += 8;\n      return value;\n\n    // uint\n    case 0xcc:\n      value = this._view.getUint8(this._offset);\n      this._offset += 1;\n      return value;\n    case 0xcd:\n      value = this._view.getUint16(this._offset);\n      this._offset += 2;\n      return value;\n    case 0xce:\n      value = this._view.getUint32(this._offset);\n      this._offset += 4;\n      return value;\n    case 0xcf:\n      hi = this._view.getUint32(this._offset) * Math.pow(2, 32);\n      lo = this._view.getUint32(this._offset + 4);\n      this._offset += 8;\n      return hi + lo;\n\n    // int\n    case 0xd0:\n      value = this._view.getInt8(this._offset);\n      this._offset += 1;\n      return value;\n    case 0xd1:\n      value = this._view.getInt16(this._offset);\n      this._offset += 2;\n      return value;\n    case 0xd2:\n      value = this._view.getInt32(this._offset);\n      this._offset += 4;\n      return value;\n    case 0xd3:\n      hi = this._view.getInt32(this._offset) * Math.pow(2, 32);\n      lo = this._view.getUint32(this._offset + 4);\n      this._offset += 8;\n      return hi + lo;\n\n    // fixext\n    case 0xd4:\n      type = this._view.getInt8(this._offset);\n      this._offset += 1;\n      if (type === 0x00) {\n        this._offset += 1;\n        return void 0;\n      }\n      return [type, this._bin(1)];\n    case 0xd5:\n      type = this._view.getInt8(this._offset);\n      this._offset += 1;\n      return [type, this._bin(2)];\n    case 0xd6:\n      type = this._view.getInt8(this._offset);\n      this._offset += 1;\n      return [type, this._bin(4)];\n    case 0xd7:\n      type = this._view.getInt8(this._offset);\n      this._offset += 1;\n      if (type === 0x00) {\n        hi = this._view.getInt32(this._offset) * Math.pow(2, 32);\n        lo = this._view.getUint32(this._offset + 4);\n        this._offset += 8;\n        return new Date(hi + lo);\n      }\n      return [type, this._bin(8)];\n    case 0xd8:\n      type = this._view.getInt8(this._offset);\n      this._offset += 1;\n      return [type, this._bin(16)];\n\n    // str\n    case 0xd9:\n      length = this._view.getUint8(this._offset);\n      this._offset += 1;\n      return this._str(length);\n    case 0xda:\n      length = this._view.getUint16(this._offset);\n      this._offset += 2;\n      return this._str(length);\n    case 0xdb:\n      length = this._view.getUint32(this._offset);\n      this._offset += 4;\n      return this._str(length);\n\n    // array\n    case 0xdc:\n      length = this._view.getUint16(this._offset);\n      this._offset += 2;\n      return this._array(length);\n    case 0xdd:\n      length = this._view.getUint32(this._offset);\n      this._offset += 4;\n      return this._array(length);\n\n    // map\n    case 0xde:\n      length = this._view.getUint16(this._offset);\n      this._offset += 2;\n      return this._map(length);\n    case 0xdf:\n      length = this._view.getUint32(this._offset);\n      this._offset += 4;\n      return this._map(length);\n  }\n\n  throw new Error('Could not parse');\n};\n\nfunction decode(buffer) {\n  var decoder = new Decoder(buffer);\n  var value = decoder._parse();\n  if (decoder._offset !== buffer.byteLength) {\n    throw new Error((buffer.byteLength - decoder._offset) + ' trailing bytes');\n  }\n  return value;\n}\n\nmodule.exports = decode;\n","exports.encode = require('./encode');\nexports.decode = require('./decode');\n","\r\n/**\r\n * Expose `Emitter`.\r\n */\r\n\r\nif (typeof module !== 'undefined') {\r\n  module.exports = Emitter;\r\n}\r\n\r\n/**\r\n * Initialize a new `Emitter`.\r\n *\r\n * @api public\r\n */\r\n\r\nfunction Emitter(obj) {\r\n  if (obj) return mixin(obj);\r\n};\r\n\r\n/**\r\n * Mixin the emitter properties.\r\n *\r\n * @param {Object} obj\r\n * @return {Object}\r\n * @api private\r\n */\r\n\r\nfunction mixin(obj) {\r\n  for (var key in Emitter.prototype) {\r\n    obj[key] = Emitter.prototype[key];\r\n  }\r\n  return obj;\r\n}\r\n\r\n/**\r\n * Listen on the given `event` with `fn`.\r\n *\r\n * @param {String} event\r\n * @param {Function} fn\r\n * @return {Emitter}\r\n * @api public\r\n */\r\n\r\nEmitter.prototype.on =\r\nEmitter.prototype.addEventListener = function(event, fn){\r\n  this._callbacks = this._callbacks || {};\r\n  (this._callbacks['$' + event] = this._callbacks['$' + event] || [])\r\n    .push(fn);\r\n  return this;\r\n};\r\n\r\n/**\r\n * Adds an `event` listener that will be invoked a single\r\n * time then automatically removed.\r\n *\r\n * @param {String} event\r\n * @param {Function} fn\r\n * @return {Emitter}\r\n * @api public\r\n */\r\n\r\nEmitter.prototype.once = function(event, fn){\r\n  function on() {\r\n    this.off(event, on);\r\n    fn.apply(this, arguments);\r\n  }\r\n\r\n  on.fn = fn;\r\n  this.on(event, on);\r\n  return this;\r\n};\r\n\r\n/**\r\n * Remove the given callback for `event` or all\r\n * registered callbacks.\r\n *\r\n * @param {String} event\r\n * @param {Function} fn\r\n * @return {Emitter}\r\n * @api public\r\n */\r\n\r\nEmitter.prototype.off =\r\nEmitter.prototype.removeListener =\r\nEmitter.prototype.removeAllListeners =\r\nEmitter.prototype.removeEventListener = function(event, fn){\r\n  this._callbacks = this._callbacks || {};\r\n\r\n  // all\r\n  if (0 == arguments.length) {\r\n    this._callbacks = {};\r\n    return this;\r\n  }\r\n\r\n  // specific event\r\n  var callbacks = this._callbacks['$' + event];\r\n  if (!callbacks) return this;\r\n\r\n  // remove all handlers\r\n  if (1 == arguments.length) {\r\n    delete this._callbacks['$' + event];\r\n    return this;\r\n  }\r\n\r\n  // remove specific handler\r\n  var cb;\r\n  for (var i = 0; i < callbacks.length; i++) {\r\n    cb = callbacks[i];\r\n    if (cb === fn || cb.fn === fn) {\r\n      callbacks.splice(i, 1);\r\n      break;\r\n    }\r\n  }\r\n\r\n  // Remove event specific arrays for event types that no\r\n  // one is subscribed for to avoid memory leak.\r\n  if (callbacks.length === 0) {\r\n    delete this._callbacks['$' + event];\r\n  }\r\n\r\n  return this;\r\n};\r\n\r\n/**\r\n * Emit `event` with the given args.\r\n *\r\n * @param {String} event\r\n * @param {Mixed} ...\r\n * @return {Emitter}\r\n */\r\n\r\nEmitter.prototype.emit = function(event){\r\n  this._callbacks = this._callbacks || {};\r\n\r\n  var args = new Array(arguments.length - 1)\r\n    , callbacks = this._callbacks['$' + event];\r\n\r\n  for (var i = 1; i < arguments.length; i++) {\r\n    args[i - 1] = arguments[i];\r\n  }\r\n\r\n  if (callbacks) {\r\n    callbacks = callbacks.slice(0);\r\n    for (var i = 0, len = callbacks.length; i < len; ++i) {\r\n      callbacks[i].apply(this, args);\r\n    }\r\n  }\r\n\r\n  return this;\r\n};\r\n\r\n/**\r\n * Return array of callbacks for `event`.\r\n *\r\n * @param {String} event\r\n * @return {Array}\r\n * @api public\r\n */\r\n\r\nEmitter.prototype.listeners = function(event){\r\n  this._callbacks = this._callbacks || {};\r\n  return this._callbacks['$' + event] || [];\r\n};\r\n\r\n/**\r\n * Check if this emitter has `event` handlers.\r\n *\r\n * @param {String} event\r\n * @return {Boolean}\r\n * @api public\r\n */\r\n\r\nEmitter.prototype.hasListeners = function(event){\r\n  return !! this.listeners(event).length;\r\n};\r\n","var msgpack = require(\"notepack.io\");\nvar Emitter = require(\"component-emitter\");\n\nexports.protocol = 5;\n\n/**\n * Packet types (see https://github.com/socketio/socket.io-protocol)\n */\n\nvar PacketType = (exports.PacketType = {\n  CONNECT: 0,\n  DISCONNECT: 1,\n  EVENT: 2,\n  ACK: 3,\n  CONNECT_ERROR: 4,\n});\n\nvar isInteger =\n  Number.isInteger ||\n  function (value) {\n    return (\n      typeof value === \"number\" &&\n      isFinite(value) &&\n      Math.floor(value) === value\n    );\n  };\n\nvar isString = function (value) {\n  return typeof value === \"string\";\n};\n\nvar isObject = function (value) {\n  return Object.prototype.toString.call(value) === \"[object Object]\";\n};\n\nfunction Encoder() {}\n\nEncoder.prototype.encode = function (packet) {\n  return [msgpack.encode(packet)];\n};\n\nfunction Decoder() {}\n\nEmitter(Decoder.prototype);\n\nDecoder.prototype.add = function (obj) {\n  var decoded = msgpack.decode(obj);\n  this.checkPacket(decoded);\n  this.emit(\"decoded\", decoded);\n};\n\nfunction isDataValid(decoded) {\n  switch (decoded.type) {\n    case PacketType.CONNECT:\n      return decoded.data === undefined || isObject(decoded.data);\n    case PacketType.DISCONNECT:\n      return decoded.data === undefined;\n    case PacketType.CONNECT_ERROR:\n      return isString(decoded.data) || isObject(decoded.data);\n    default:\n      return Array.isArray(decoded.data);\n  }\n}\n\nDecoder.prototype.checkPacket = function (decoded) {\n  var isTypeValid =\n    isInteger(decoded.type) &&\n    decoded.type >= PacketType.CONNECT &&\n    decoded.type <= PacketType.CONNECT_ERROR;\n  if (!isTypeValid) {\n    throw new Error(\"invalid packet type\");\n  }\n\n  if (!isString(decoded.nsp)) {\n    throw new Error(\"invalid namespace\");\n  }\n\n  if (!isDataValid(decoded)) {\n    throw new Error(\"invalid payload\");\n  }\n\n  var isAckValid = decoded.id === undefined || isInteger(decoded.id);\n  if (!isAckValid) {\n    throw new Error(\"invalid packet id\");\n  }\n};\n\nDecoder.prototype.destroy = function () {};\n\nexports.Encoder = Encoder;\nexports.Decoder = Decoder;\n","export function on(obj, ev, fn) {\n    obj.on(ev, fn);\n    return function subDestroy() {\n        obj.off(ev, fn);\n    };\n}\n","import { PacketType } from \"socket.io-parser\";\nimport { on } from \"./on.js\";\nimport { Emitter, } from \"@socket.io/component-emitter\";\n/**\n * Internal events.\n * These events can't be emitted by the user.\n */\nconst RESERVED_EVENTS = Object.freeze({\n    connect: 1,\n    connect_error: 1,\n    disconnect: 1,\n    disconnecting: 1,\n    // EventEmitter reserved events: https://nodejs.org/api/events.html#events_event_newlistener\n    newListener: 1,\n    removeListener: 1,\n});\nexport class Socket extends Emitter {\n    /**\n     * `Socket` constructor.\n     *\n     * @public\n     */\n    constructor(io, nsp, opts) {\n        super();\n        this.connected = false;\n        this.disconnected = true;\n        this.receiveBuffer = [];\n        this.sendBuffer = [];\n        this.ids = 0;\n        this.acks = {};\n        this.flags = {};\n        this.io = io;\n        this.nsp = nsp;\n        if (opts && opts.auth) {\n            this.auth = opts.auth;\n        }\n        if (this.io._autoConnect)\n            this.open();\n    }\n    /**\n     * Subscribe to open, close and packet events\n     *\n     * @private\n     */\n    subEvents() {\n        if (this.subs)\n            return;\n        const io = this.io;\n        this.subs = [\n            on(io, \"open\", this.onopen.bind(this)),\n            on(io, \"packet\", this.onpacket.bind(this)),\n            on(io, \"error\", this.onerror.bind(this)),\n            on(io, \"close\", this.onclose.bind(this)),\n        ];\n    }\n    /**\n     * Whether the Socket will try to reconnect when its Manager connects or reconnects\n     */\n    get active() {\n        return !!this.subs;\n    }\n    /**\n     * \"Opens\" the socket.\n     *\n     * @public\n     */\n    connect() {\n        if (this.connected)\n            return this;\n        this.subEvents();\n        if (!this.io[\"_reconnecting\"])\n            this.io.open(); // ensure open\n        if (\"open\" === this.io._readyState)\n            this.onopen();\n        return this;\n    }\n    /**\n     * Alias for connect()\n     */\n    open() {\n        return this.connect();\n    }\n    /**\n     * Sends a `message` event.\n     *\n     * @return self\n     * @public\n     */\n    send(...args) {\n        args.unshift(\"message\");\n        this.emit.apply(this, args);\n        return this;\n    }\n    /**\n     * Override `emit`.\n     * If the event is in `events`, it's emitted normally.\n     *\n     * @return self\n     * @public\n     */\n    emit(ev, ...args) {\n        if (RESERVED_EVENTS.hasOwnProperty(ev)) {\n            throw new Error('\"' + ev + '\" is a reserved event name');\n        }\n        args.unshift(ev);\n        const packet = {\n            type: PacketType.EVENT,\n            data: args,\n        };\n        packet.options = {};\n        packet.options.compress = this.flags.compress !== false;\n        // event ack callback\n        if (\"function\" === typeof args[args.length - 1]) {\n            const id = this.ids++;\n            const ack = args.pop();\n            this._registerAckCallback(id, ack);\n            packet.id = id;\n        }\n        const isTransportWritable = this.io.engine &&\n            this.io.engine.transport &&\n            this.io.engine.transport.writable;\n        const discardPacket = this.flags.volatile && (!isTransportWritable || !this.connected);\n        if (discardPacket) {\n        }\n        else if (this.connected) {\n            this.packet(packet);\n        }\n        else {\n            this.sendBuffer.push(packet);\n        }\n        this.flags = {};\n        return this;\n    }\n    /**\n     * @private\n     */\n    _registerAckCallback(id, ack) {\n        const timeout = this.flags.timeout;\n        if (timeout === undefined) {\n            this.acks[id] = ack;\n            return;\n        }\n        // @ts-ignore\n        const timer = this.io.setTimeoutFn(() => {\n            delete this.acks[id];\n            for (let i = 0; i < this.sendBuffer.length; i++) {\n                if (this.sendBuffer[i].id === id) {\n                    this.sendBuffer.splice(i, 1);\n                }\n            }\n            ack.call(this, new Error(\"operation has timed out\"));\n        }, timeout);\n        this.acks[id] = (...args) => {\n            // @ts-ignore\n            this.io.clearTimeoutFn(timer);\n            ack.apply(this, [null, ...args]);\n        };\n    }\n    /**\n     * Sends a packet.\n     *\n     * @param packet\n     * @private\n     */\n    packet(packet) {\n        packet.nsp = this.nsp;\n        this.io._packet(packet);\n    }\n    /**\n     * Called upon engine `open`.\n     *\n     * @private\n     */\n    onopen() {\n        if (typeof this.auth == \"function\") {\n            this.auth((data) => {\n                this.packet({ type: PacketType.CONNECT, data });\n            });\n        }\n        else {\n            this.packet({ type: PacketType.CONNECT, data: this.auth });\n        }\n    }\n    /**\n     * Called upon engine or manager `error`.\n     *\n     * @param err\n     * @private\n     */\n    onerror(err) {\n        if (!this.connected) {\n            this.emitReserved(\"connect_error\", err);\n        }\n    }\n    /**\n     * Called upon engine `close`.\n     *\n     * @param reason\n     * @private\n     */\n    onclose(reason) {\n        this.connected = false;\n        this.disconnected = true;\n        delete this.id;\n        this.emitReserved(\"disconnect\", reason);\n    }\n    /**\n     * Called with socket packet.\n     *\n     * @param packet\n     * @private\n     */\n    onpacket(packet) {\n        const sameNamespace = packet.nsp === this.nsp;\n        if (!sameNamespace)\n            return;\n        switch (packet.type) {\n            case PacketType.CONNECT:\n                if (packet.data && packet.data.sid) {\n                    const id = packet.data.sid;\n                    this.onconnect(id);\n                }\n                else {\n                    this.emitReserved(\"connect_error\", new Error(\"It seems you are trying to reach a Socket.IO server in v2.x with a v3.x client, but they are not compatible (more information here: https://socket.io/docs/v3/migrating-from-2-x-to-3-0/)\"));\n                }\n                break;\n            case PacketType.EVENT:\n                this.onevent(packet);\n                break;\n            case PacketType.BINARY_EVENT:\n                this.onevent(packet);\n                break;\n            case PacketType.ACK:\n                this.onack(packet);\n                break;\n            case PacketType.BINARY_ACK:\n                this.onack(packet);\n                break;\n            case PacketType.DISCONNECT:\n                this.ondisconnect();\n                break;\n            case PacketType.CONNECT_ERROR:\n                this.destroy();\n                const err = new Error(packet.data.message);\n                // @ts-ignore\n                err.data = packet.data.data;\n                this.emitReserved(\"connect_error\", err);\n                break;\n        }\n    }\n    /**\n     * Called upon a server event.\n     *\n     * @param packet\n     * @private\n     */\n    onevent(packet) {\n        const args = packet.data || [];\n        if (null != packet.id) {\n            args.push(this.ack(packet.id));\n        }\n        if (this.connected) {\n            this.emitEvent(args);\n        }\n        else {\n            this.receiveBuffer.push(Object.freeze(args));\n        }\n    }\n    emitEvent(args) {\n        if (this._anyListeners && this._anyListeners.length) {\n            const listeners = this._anyListeners.slice();\n            for (const listener of listeners) {\n                listener.apply(this, args);\n            }\n        }\n        super.emit.apply(this, args);\n    }\n    /**\n     * Produces an ack callback to emit with an event.\n     *\n     * @private\n     */\n    ack(id) {\n        const self = this;\n        let sent = false;\n        return function (...args) {\n            // prevent double callbacks\n            if (sent)\n                return;\n            sent = true;\n            self.packet({\n                type: PacketType.ACK,\n                id: id,\n                data: args,\n            });\n        };\n    }\n    /**\n     * Called upon a server acknowlegement.\n     *\n     * @param packet\n     * @private\n     */\n    onack(packet) {\n        const ack = this.acks[packet.id];\n        if (\"function\" === typeof ack) {\n            ack.apply(this, packet.data);\n            delete this.acks[packet.id];\n        }\n        else {\n        }\n    }\n    /**\n     * Called upon server connect.\n     *\n     * @private\n     */\n    onconnect(id) {\n        this.id = id;\n        this.connected = true;\n        this.disconnected = false;\n        this.emitBuffered();\n        this.emitReserved(\"connect\");\n    }\n    /**\n     * Emit buffered events (received and emitted).\n     *\n     * @private\n     */\n    emitBuffered() {\n        this.receiveBuffer.forEach((args) => this.emitEvent(args));\n        this.receiveBuffer = [];\n        this.sendBuffer.forEach((packet) => this.packet(packet));\n        this.sendBuffer = [];\n    }\n    /**\n     * Called upon server disconnect.\n     *\n     * @private\n     */\n    ondisconnect() {\n        this.destroy();\n        this.onclose(\"io server disconnect\");\n    }\n    /**\n     * Called upon forced client/server side disconnections,\n     * this method ensures the manager stops tracking us and\n     * that reconnections don't get triggered for this.\n     *\n     * @private\n     */\n    destroy() {\n        if (this.subs) {\n            // clean subscriptions to avoid reconnections\n            this.subs.forEach((subDestroy) => subDestroy());\n            this.subs = undefined;\n        }\n        this.io[\"_destroy\"](this);\n    }\n    /**\n     * Disconnects the socket manually.\n     *\n     * @return self\n     * @public\n     */\n    disconnect() {\n        if (this.connected) {\n            this.packet({ type: PacketType.DISCONNECT });\n        }\n        // remove socket from pool\n        this.destroy();\n        if (this.connected) {\n            // fire events\n            this.onclose(\"io client disconnect\");\n        }\n        return this;\n    }\n    /**\n     * Alias for disconnect()\n     *\n     * @return self\n     * @public\n     */\n    close() {\n        return this.disconnect();\n    }\n    /**\n     * Sets the compress flag.\n     *\n     * @param compress - if `true`, compresses the sending data\n     * @return self\n     * @public\n     */\n    compress(compress) {\n        this.flags.compress = compress;\n        return this;\n    }\n    /**\n     * Sets a modifier for a subsequent event emission that the event message will be dropped when this socket is not\n     * ready to send messages.\n     *\n     * @returns self\n     * @public\n     */\n    get volatile() {\n        this.flags.volatile = true;\n        return this;\n    }\n    /**\n     * Sets a modifier for a subsequent event emission that the callback will be called with an error when the\n     * given number of milliseconds have elapsed without an acknowledgement from the server:\n     *\n     * ```\n     * socket.timeout(5000).emit(\"my-event\", (err) => {\n     *   if (err) {\n     *     // the server did not acknowledge the event in the given delay\n     *   }\n     * });\n     * ```\n     *\n     * @returns self\n     * @public\n     */\n    timeout(timeout) {\n        this.flags.timeout = timeout;\n        return this;\n    }\n    /**\n     * Adds a listener that will be fired when any event is emitted. The event name is passed as the first argument to the\n     * callback.\n     *\n     * @param listener\n     * @public\n     */\n    onAny(listener) {\n        this._anyListeners = this._anyListeners || [];\n        this._anyListeners.push(listener);\n        return this;\n    }\n    /**\n     * Adds a listener that will be fired when any event is emitted. The event name is passed as the first argument to the\n     * callback. The listener is added to the beginning of the listeners array.\n     *\n     * @param listener\n     * @public\n     */\n    prependAny(listener) {\n        this._anyListeners = this._anyListeners || [];\n        this._anyListeners.unshift(listener);\n        return this;\n    }\n    /**\n     * Removes the listener that will be fired when any event is emitted.\n     *\n     * @param listener\n     * @public\n     */\n    offAny(listener) {\n        if (!this._anyListeners) {\n            return this;\n        }\n        if (listener) {\n            const listeners = this._anyListeners;\n            for (let i = 0; i < listeners.length; i++) {\n                if (listener === listeners[i]) {\n                    listeners.splice(i, 1);\n                    return this;\n                }\n            }\n        }\n        else {\n            this._anyListeners = [];\n        }\n        return this;\n    }\n    /**\n     * Returns an array of listeners that are listening for any event that is specified. This array can be manipulated,\n     * e.g. to remove listeners.\n     *\n     * @public\n     */\n    listenersAny() {\n        return this._anyListeners || [];\n    }\n}\n","\n/**\n * Expose `Backoff`.\n */\n\nmodule.exports = Backoff;\n\n/**\n * Initialize backoff timer with `opts`.\n *\n * - `min` initial timeout in milliseconds [100]\n * - `max` max timeout [10000]\n * - `jitter` [0]\n * - `factor` [2]\n *\n * @param {Object} opts\n * @api public\n */\n\nfunction Backoff(opts) {\n  opts = opts || {};\n  this.ms = opts.min || 100;\n  this.max = opts.max || 10000;\n  this.factor = opts.factor || 2;\n  this.jitter = opts.jitter > 0 && opts.jitter <= 1 ? opts.jitter : 0;\n  this.attempts = 0;\n}\n\n/**\n * Return the backoff duration.\n *\n * @return {Number}\n * @api public\n */\n\nBackoff.prototype.duration = function(){\n  var ms = this.ms * Math.pow(this.factor, this.attempts++);\n  if (this.jitter) {\n    var rand =  Math.random();\n    var deviation = Math.floor(rand * this.jitter * ms);\n    ms = (Math.floor(rand * 10) & 1) == 0  ? ms - deviation : ms + deviation;\n  }\n  return Math.min(ms, this.max) | 0;\n};\n\n/**\n * Reset the number of attempts.\n *\n * @api public\n */\n\nBackoff.prototype.reset = function(){\n  this.attempts = 0;\n};\n\n/**\n * Set the minimum duration\n *\n * @api public\n */\n\nBackoff.prototype.setMin = function(min){\n  this.ms = min;\n};\n\n/**\n * Set the maximum duration\n *\n * @api public\n */\n\nBackoff.prototype.setMax = function(max){\n  this.max = max;\n};\n\n/**\n * Set the jitter\n *\n * @api public\n */\n\nBackoff.prototype.setJitter = function(jitter){\n  this.jitter = jitter;\n};\n\n","import { Socket as Engine, installTimerFunctions, } from \"engine.io-client\";\nimport { Socket } from \"./socket.js\";\nimport * as parser from \"socket.io-parser\";\nimport { on } from \"./on.js\";\nimport Backoff from \"backo2\";\nimport { Emitter, } from \"@socket.io/component-emitter\";\nexport class Manager extends Emitter {\n    constructor(uri, opts) {\n        var _a;\n        super();\n        this.nsps = {};\n        this.subs = [];\n        if (uri && \"object\" === typeof uri) {\n            opts = uri;\n            uri = undefined;\n        }\n        opts = opts || {};\n        opts.path = opts.path || \"/socket.io\";\n        this.opts = opts;\n        installTimerFunctions(this, opts);\n        this.reconnection(opts.reconnection !== false);\n        this.reconnectionAttempts(opts.reconnectionAttempts || Infinity);\n        this.reconnectionDelay(opts.reconnectionDelay || 1000);\n        this.reconnectionDelayMax(opts.reconnectionDelayMax || 5000);\n        this.randomizationFactor((_a = opts.randomizationFactor) !== null && _a !== void 0 ? _a : 0.5);\n        this.backoff = new Backoff({\n            min: this.reconnectionDelay(),\n            max: this.reconnectionDelayMax(),\n            jitter: this.randomizationFactor(),\n        });\n        this.timeout(null == opts.timeout ? 20000 : opts.timeout);\n        this._readyState = \"closed\";\n        this.uri = uri;\n        const _parser = opts.parser || parser;\n        this.encoder = new _parser.Encoder();\n        this.decoder = new _parser.Decoder();\n        this._autoConnect = opts.autoConnect !== false;\n        if (this._autoConnect)\n            this.open();\n    }\n    reconnection(v) {\n        if (!arguments.length)\n            return this._reconnection;\n        this._reconnection = !!v;\n        return this;\n    }\n    reconnectionAttempts(v) {\n        if (v === undefined)\n            return this._reconnectionAttempts;\n        this._reconnectionAttempts = v;\n        return this;\n    }\n    reconnectionDelay(v) {\n        var _a;\n        if (v === undefined)\n            return this._reconnectionDelay;\n        this._reconnectionDelay = v;\n        (_a = this.backoff) === null || _a === void 0 ? void 0 : _a.setMin(v);\n        return this;\n    }\n    randomizationFactor(v) {\n        var _a;\n        if (v === undefined)\n            return this._randomizationFactor;\n        this._randomizationFactor = v;\n        (_a = this.backoff) === null || _a === void 0 ? void 0 : _a.setJitter(v);\n        return this;\n    }\n    reconnectionDelayMax(v) {\n        var _a;\n        if (v === undefined)\n            return this._reconnectionDelayMax;\n        this._reconnectionDelayMax = v;\n        (_a = this.backoff) === null || _a === void 0 ? void 0 : _a.setMax(v);\n        return this;\n    }\n    timeout(v) {\n        if (!arguments.length)\n            return this._timeout;\n        this._timeout = v;\n        return this;\n    }\n    /**\n     * Starts trying to reconnect if reconnection is enabled and we have not\n     * started reconnecting yet\n     *\n     * @private\n     */\n    maybeReconnectOnOpen() {\n        // Only try to reconnect if it's the first time we're connecting\n        if (!this._reconnecting &&\n            this._reconnection &&\n            this.backoff.attempts === 0) {\n            // keeps reconnection from firing twice for the same reconnection loop\n            this.reconnect();\n        }\n    }\n    /**\n     * Sets the current transport `socket`.\n     *\n     * @param {Function} fn - optional, callback\n     * @return self\n     * @public\n     */\n    open(fn) {\n        if (~this._readyState.indexOf(\"open\"))\n            return this;\n        this.engine = new Engine(this.uri, this.opts);\n        const socket = this.engine;\n        const self = this;\n        this._readyState = \"opening\";\n        this.skipReconnect = false;\n        // emit `open`\n        const openSubDestroy = on(socket, \"open\", function () {\n            self.onopen();\n            fn && fn();\n        });\n        // emit `error`\n        const errorSub = on(socket, \"error\", (err) => {\n            self.cleanup();\n            self._readyState = \"closed\";\n            this.emitReserved(\"error\", err);\n            if (fn) {\n                fn(err);\n            }\n            else {\n                // Only do this if there is no fn to handle the error\n                self.maybeReconnectOnOpen();\n            }\n        });\n        if (false !== this._timeout) {\n            const timeout = this._timeout;\n            if (timeout === 0) {\n                openSubDestroy(); // prevents a race condition with the 'open' event\n            }\n            // set timer\n            const timer = this.setTimeoutFn(() => {\n                openSubDestroy();\n                socket.close();\n                // @ts-ignore\n                socket.emit(\"error\", new Error(\"timeout\"));\n            }, timeout);\n            if (this.opts.autoUnref) {\n                timer.unref();\n            }\n            this.subs.push(function subDestroy() {\n                clearTimeout(timer);\n            });\n        }\n        this.subs.push(openSubDestroy);\n        this.subs.push(errorSub);\n        return this;\n    }\n    /**\n     * Alias for open()\n     *\n     * @return self\n     * @public\n     */\n    connect(fn) {\n        return this.open(fn);\n    }\n    /**\n     * Called upon transport open.\n     *\n     * @private\n     */\n    onopen() {\n        // clear old subs\n        this.cleanup();\n        // mark as open\n        this._readyState = \"open\";\n        this.emitReserved(\"open\");\n        // add new subs\n        const socket = this.engine;\n        this.subs.push(on(socket, \"ping\", this.onping.bind(this)), on(socket, \"data\", this.ondata.bind(this)), on(socket, \"error\", this.onerror.bind(this)), on(socket, \"close\", this.onclose.bind(this)), on(this.decoder, \"decoded\", this.ondecoded.bind(this)));\n    }\n    /**\n     * Called upon a ping.\n     *\n     * @private\n     */\n    onping() {\n        this.emitReserved(\"ping\");\n    }\n    /**\n     * Called with data.\n     *\n     * @private\n     */\n    ondata(data) {\n        this.decoder.add(data);\n    }\n    /**\n     * Called when parser fully decodes a packet.\n     *\n     * @private\n     */\n    ondecoded(packet) {\n        this.emitReserved(\"packet\", packet);\n    }\n    /**\n     * Called upon socket error.\n     *\n     * @private\n     */\n    onerror(err) {\n        this.emitReserved(\"error\", err);\n    }\n    /**\n     * Creates a new socket for the given `nsp`.\n     *\n     * @return {Socket}\n     * @public\n     */\n    socket(nsp, opts) {\n        let socket = this.nsps[nsp];\n        if (!socket) {\n            socket = new Socket(this, nsp, opts);\n            this.nsps[nsp] = socket;\n        }\n        return socket;\n    }\n    /**\n     * Called upon a socket close.\n     *\n     * @param socket\n     * @private\n     */\n    _destroy(socket) {\n        const nsps = Object.keys(this.nsps);\n        for (const nsp of nsps) {\n            const socket = this.nsps[nsp];\n            if (socket.active) {\n                return;\n            }\n        }\n        this._close();\n    }\n    /**\n     * Writes a packet.\n     *\n     * @param packet\n     * @private\n     */\n    _packet(packet) {\n        const encodedPackets = this.encoder.encode(packet);\n        for (let i = 0; i < encodedPackets.length; i++) {\n            this.engine.write(encodedPackets[i], packet.options);\n        }\n    }\n    /**\n     * Clean up transport subscriptions and packet buffer.\n     *\n     * @private\n     */\n    cleanup() {\n        this.subs.forEach((subDestroy) => subDestroy());\n        this.subs.length = 0;\n        this.decoder.destroy();\n    }\n    /**\n     * Close the current socket.\n     *\n     * @private\n     */\n    _close() {\n        this.skipReconnect = true;\n        this._reconnecting = false;\n        this.onclose(\"forced close\");\n        if (this.engine)\n            this.engine.close();\n    }\n    /**\n     * Alias for close()\n     *\n     * @private\n     */\n    disconnect() {\n        return this._close();\n    }\n    /**\n     * Called upon engine close.\n     *\n     * @private\n     */\n    onclose(reason) {\n        this.cleanup();\n        this.backoff.reset();\n        this._readyState = \"closed\";\n        this.emitReserved(\"close\", reason);\n        if (this._reconnection && !this.skipReconnect) {\n            this.reconnect();\n        }\n    }\n    /**\n     * Attempt a reconnection.\n     *\n     * @private\n     */\n    reconnect() {\n        if (this._reconnecting || this.skipReconnect)\n            return this;\n        const self = this;\n        if (this.backoff.attempts >= this._reconnectionAttempts) {\n            this.backoff.reset();\n            this.emitReserved(\"reconnect_failed\");\n            this._reconnecting = false;\n        }\n        else {\n            const delay = this.backoff.duration();\n            this._reconnecting = true;\n            const timer = this.setTimeoutFn(() => {\n                if (self.skipReconnect)\n                    return;\n                this.emitReserved(\"reconnect_attempt\", self.backoff.attempts);\n                // check again for the case socket closed in above events\n                if (self.skipReconnect)\n                    return;\n                self.open((err) => {\n                    if (err) {\n                        self._reconnecting = false;\n                        self.reconnect();\n                        this.emitReserved(\"reconnect_error\", err);\n                    }\n                    else {\n                        self.onreconnect();\n                    }\n                });\n            }, delay);\n            if (this.opts.autoUnref) {\n                timer.unref();\n            }\n            this.subs.push(function subDestroy() {\n                clearTimeout(timer);\n            });\n        }\n    }\n    /**\n     * Called upon successful reconnect.\n     *\n     * @private\n     */\n    onreconnect() {\n        const attempt = this.backoff.attempts;\n        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{Function} fn\r\n * @return {Emitter}\r\n * @api public\r\n */\r\n\r\nEmitter.prototype.on =\r\nEmitter.prototype.addEventListener = function(event, fn){\r\n  this._callbacks = this._callbacks || {};\r\n  (this._callbacks['$' + event] = this._callbacks['$' + event] || [])\r\n    .push(fn);\r\n  return this;\r\n};\r\n\r\n/**\r\n * Adds an `event` listener that will be invoked a single\r\n * time then automatically removed.\r\n *\r\n * @param {String} event\r\n * @param {Function} fn\r\n * @return {Emitter}\r\n * @api public\r\n */\r\n\r\nEmitter.prototype.once = function(event, fn){\r\n  function on() {\r\n    this.off(event, on);\r\n    fn.apply(this, arguments);\r\n  }\r\n\r\n  on.fn = fn;\r\n  this.on(event, on);\r\n  return this;\r\n};\r\n\r\n/**\r\n * Remove the given callback for `event` or all\r\n * registered callbacks.\r\n *\r\n * @param {String} event\r\n * @param {Function} fn\r\n * @return {Emitter}\r\n * @api public\r\n */\r\n\r\nEmitter.prototype.off =\r\nEmitter.prototype.removeListener =\r\nEmitter.prototype.removeAllListeners =\r\nEmitter.prototype.removeEventListener = function(event, fn){\r\n  this._callbacks = this._callbacks || {};\r\n\r\n  // all\r\n  if (0 == arguments.length) {\r\n    this._callbacks = {};\r\n    return this;\r\n  }\r\n\r\n  // specific event\r\n  var callbacks = this._callbacks['$' + event];\r\n  if (!callbacks) return this;\r\n\r\n  // remove all handlers\r\n  if (1 == arguments.length) {\r\n    delete this._callbacks['$' + event];\r\n    return this;\r\n  }\r\n\r\n  // remove specific handler\r\n  var cb;\r\n  for (var i = 0; i < callbacks.length; i++) {\r\n    cb = callbacks[i];\r\n    if (cb === fn || cb.fn === fn) {\r\n      callbacks.splice(i, 1);\r\n      break;\r\n    }\r\n  }\r\n\r\n  // Remove event specific arrays for event types that no\r\n  // one is subscribed for to avoid memory leak.\r\n  if (callbacks.length === 0) {\r\n    delete this._callbacks['$' + event];\r\n  }\r\n\r\n  return this;\r\n};\r\n\r\n/**\r\n * Emit `event` with the given args.\r\n *\r\n * @param {String} event\r\n * @param {Mixed} ...\r\n * @return {Emitter}\r\n */\r\n\r\nEmitter.prototype.emit = function(event){\r\n  this._callbacks = this._callbacks || {};\r\n\r\n  var args = new Array(arguments.length - 1)\r\n    , callbacks = this._callbacks['$' + event];\r\n\r\n  for (var i = 1; i < arguments.length; i++) {\r\n    args[i - 1] = arguments[i];\r\n  }\r\n\r\n  if (callbacks) {\r\n    callbacks = callbacks.slice(0);\r\n    for (var i = 0, len = callbacks.length; i < len; ++i) {\r\n      callbacks[i].apply(this, args);\r\n    }\r\n  }\r\n\r\n  return this;\r\n};\r\n\r\n/**\r\n * Return array of callbacks for `event`.\r\n *\r\n * @param {String} event\r\n * @return {Array}\r\n * @api public\r\n */\r\n\r\nEmitter.prototype.listeners = function(event){\r\n  this._callbacks = this._callbacks || {};\r\n  return this._callbacks['$' + event] || [];\r\n};\r\n\r\n/**\r\n * Check if this emitter has `event` handlers.\r\n *\r\n * @param {String} event\r\n * @return {Boolean}\r\n * @api public\r\n */\r\n\r\nEmitter.prototype.hasListeners = function(event){\r\n  return !! this.listeners(event).length;\r\n};\r\n","const encodePacket = require(\"./encodePacket\");\nconst decodePacket = require(\"./decodePacket\");\n\nconst SEPARATOR = String.fromCharCode(30); // see https://en.wikipedia.org/wiki/Delimiter#ASCII_delimited_text\n\nconst encodePayload = (packets, callback) => {\n  // some packets may be added to the array while encoding, so the initial length must be saved\n  const length = packets.length;\n  const encodedPackets = new Array(length);\n  let count = 0;\n\n  packets.forEach((packet, i) => {\n    // force base64 encoding for binary packets\n    encodePacket(packet, false, encodedPacket => {\n      encodedPackets[i] = encodedPacket;\n      if (++count === length) {\n        callback(encodedPackets.join(SEPARATOR));\n      }\n    });\n  });\n};\n\nconst decodePayload = (encodedPayload, binaryType) => {\n  const encodedPackets = encodedPayload.split(SEPARATOR);\n  const packets = [];\n  for (let i = 0; i < encodedPackets.length; i++) {\n    const decodedPacket = decodePacket(encodedPackets[i], binaryType);\n    packets.push(decodedPacket);\n    if (decodedPacket.type === \"error\") {\n      break;\n    }\n  }\n  return packets;\n};\n\nmodule.exports = {\n  protocol: 4,\n  encodePacket,\n  encodePayload,\n  decodePacket,\n  decodePayload\n};\n","module.exports = (() => {\n  if (typeof self !== \"undefined\") {\n    return self;\n  } else if (typeof window !== \"undefined\") {\n    return window;\n  } else {\n    return Function(\"return this\")();\n  }\n})();\n","const parser = require(\"engine.io-parser\");\nconst Emitter = require(\"component-emitter\");\n\nclass Transport extends Emitter {\n  /**\n   * Transport abstract constructor.\n   *\n   * @param {Object} options.\n   * @api private\n   */\n  constructor(opts) {\n    super();\n\n    this.opts = opts;\n    this.query = opts.query;\n    this.readyState = \"\";\n    this.socket = opts.socket;\n  }\n\n  /**\n   * Emits an error.\n   *\n   * @param {String} str\n   * @return {Transport} for chaining\n   * @api public\n   */\n  onError(msg, desc) {\n    const err = new Error(msg);\n    err.type = \"TransportError\";\n    err.description = desc;\n    this.emit(\"error\", err);\n    return this;\n  }\n\n  /**\n   * Opens the transport.\n   *\n   * @api public\n   */\n  open() {\n    if (\"closed\" === this.readyState || \"\" === this.readyState) {\n      this.readyState = \"opening\";\n      this.doOpen();\n    }\n\n    return this;\n  }\n\n  /**\n   * Closes the transport.\n   *\n   * @api private\n   */\n  close() {\n    if (\"opening\" === this.readyState || \"open\" === this.readyState) {\n      this.doClose();\n      this.onClose();\n    }\n\n    return this;\n  }\n\n  /**\n   * Sends multiple packets.\n   *\n   * @param {Array} packets\n   * @api private\n   */\n  send(packets) {\n    if (\"open\" === this.readyState) {\n      this.write(packets);\n    } else {\n      throw new Error(\"Transport not open\");\n    }\n  }\n\n  /**\n   * Called upon open\n   *\n   * @api private\n   */\n  onOpen() {\n    this.readyState = \"open\";\n    this.writable = true;\n    this.emit(\"open\");\n  }\n\n  /**\n   * Called with data.\n   *\n   * @param {String} data\n   * @api private\n   */\n  onData(data) {\n    const packet = parser.decodePacket(data, this.socket.binaryType);\n    this.onPacket(packet);\n  }\n\n  /**\n   * Called with a decoded packet.\n   */\n  onPacket(packet) {\n    this.emit(\"packet\", packet);\n  }\n\n  /**\n   * Called upon close.\n   *\n   * @api private\n   */\n  onClose() {\n    this.readyState = \"closed\";\n    this.emit(\"close\");\n  }\n}\n\nmodule.exports = Transport;\n","/**\n * Compiles a querystring\n * Returns string representation of the object\n *\n * @param {Object}\n * @api private\n */\n\nexports.encode = function (obj) {\n  var str = '';\n\n  for (var i in obj) {\n    if (obj.hasOwnProperty(i)) {\n      if (str.length) str += '&';\n      str += encodeURIComponent(i) + '=' + encodeURIComponent(obj[i]);\n    }\n  }\n\n  return str;\n};\n\n/**\n * Parses a simple querystring into an object\n *\n * @param {String} qs\n * @api private\n */\n\nexports.decode = function(qs){\n  var qry = {};\n  var pairs = qs.split('&');\n  for (var i = 0, l = pairs.length; i < l; i++) {\n    var pair = pairs[i].split('=');\n    qry[decodeURIComponent(pair[0])] = decodeURIComponent(pair[1]);\n  }\n  return qry;\n};\n","var msgpack = require(\"notepack.io\");\nvar Emitter = require(\"component-emitter\");\n\nexports.protocol = 5;\n\n/**\n * Packet types (see https://github.com/socketio/socket.io-protocol)\n */\n\nvar PacketType = (exports.PacketType = {\n  CONNECT: 0,\n  DISCONNECT: 1,\n  EVENT: 2,\n  ACK: 3,\n  CONNECT_ERROR: 4,\n});\n\nvar isInteger =\n  Number.isInteger ||\n  function (value) {\n    return (\n      typeof value === \"number\" &&\n      isFinite(value) &&\n      Math.floor(value) === value\n    );\n  };\n\nvar isString = function (value) {\n  return typeof value === \"string\";\n};\n\nvar isObject = function (value) {\n  return Object.prototype.toString.call(value) === \"[object Object]\";\n};\n\nfunction Encoder() {}\n\nEncoder.prototype.encode = function (packet) {\n  return [msgpack.encode(packet)];\n};\n\nfunction Decoder() {}\n\nEmitter(Decoder.prototype);\n\nDecoder.prototype.add = function (obj) {\n  var decoded = msgpack.decode(obj);\n  this.checkPacket(decoded);\n  this.emit(\"decoded\", decoded);\n};\n\nfunction isDataValid(decoded) {\n  switch (decoded.type) {\n    case PacketType.CONNECT:\n      return decoded.data === undefined || isObject(decoded.data);\n    case PacketType.DISCONNECT:\n      return decoded.data === undefined;\n    case PacketType.CONNECT_ERROR:\n      return isString(decoded.data) || isObject(decoded.data);\n    default:\n      return Array.isArray(decoded.data);\n  }\n}\n\nDecoder.prototype.checkPacket = function (decoded) {\n  var isTypeValid =\n    isInteger(decoded.type) &&\n    decoded.type >= PacketType.CONNECT &&\n    decoded.type <= PacketType.CONNECT_ERROR;\n  if (!isTypeValid) {\n    throw new Error(\"invalid packet type\");\n  }\n\n  if (!isString(decoded.nsp)) {\n    throw new Error(\"invalid namespace\");\n  }\n\n  if (!isDataValid(decoded)) {\n    throw new Error(\"invalid payload\");\n  }\n\n  var isAckValid = decoded.id === undefined || isInteger(decoded.id);\n  if (!isAckValid) {\n    throw new Error(\"invalid packet id\");\n  }\n};\n\nDecoder.prototype.destroy = function () {};\n\nexports.Encoder = Encoder;\nexports.Decoder = Decoder;\n","/**\n * Parses an URI\n *\n * @author Steven Levithan <stevenlevithan.com> (MIT license)\n * @api private\n */\n\nvar re = /^(?:(?![^:@]+:[^:@\\/]*@)(http|https|ws|wss):\\/\\/)?((?:(([^:@]*)(?::([^:@]*))?)?@)?((?:[a-f0-9]{0,4}:){2,7}[a-f0-9]{0,4}|[^:\\/?#]*)(?::(\\d*))?)(((\\/(?:[^?#](?![^?#\\/]*\\.[^?#\\/.]+(?:[?#]|$)))*\\/?)?([^?#\\/]*))(?:\\?([^#]*))?(?:#(.*))?)/;\n\nvar parts = [\n    'source', 'protocol', 'authority', 'userInfo', 'user', 'password', 'host', 'port', 'relative', 'path', 'directory', 'file', 'query', 'anchor'\n];\n\nmodule.exports = function parseuri(str) {\n    var src = str,\n        b = str.indexOf('['),\n        e = str.indexOf(']');\n\n    if (b != -1 && e != -1) {\n        str = str.substring(0, b) + str.substring(b, e).replace(/:/g, ';') + str.substring(e, str.length);\n    }\n\n    var m = re.exec(str || ''),\n        uri = {},\n        i = 14;\n\n    while (i--) {\n        uri[parts[i]] = m[i] || '';\n    }\n\n    if (b != -1 && e != -1) {\n        uri.source = src;\n        uri.host = uri.host.substring(1, uri.host.length - 1).replace(/;/g, ':');\n        uri.authority = uri.authority.replace('[', '').replace(']', '').replace(/;/g, ':');\n        uri.ipv6uri = true;\n    }\n\n    uri.pathNames = pathNames(uri, uri['path']);\n    uri.queryKey = queryKey(uri, uri['query']);\n\n    return uri;\n};\n\nfunction pathNames(obj, path) {\n    var regx = /\\/{2,9}/g,\n        names = path.replace(regx, \"/\").split(\"/\");\n\n    if (path.substr(0, 1) == '/' || path.length === 0) {\n        names.splice(0, 1);\n    }\n    if (path.substr(path.length - 1, 1) == '/') {\n        names.splice(names.length - 1, 1);\n    }\n\n    return names;\n}\n\nfunction queryKey(uri, query) {\n    var data = {};\n\n    query.replace(/(?:^|&)([^&=]*)=?([^&]*)/g, function ($0, $1, $2) {\n        if ($1) {\n            data[$1] = $2;\n        }\n    });\n\n    return data;\n}\n","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.Manager = void 0;\nconst eio = require(\"engine.io-client\");\nconst socket_1 = require(\"./socket\");\nconst Emitter = require(\"component-emitter\");\nconst parser = require(\"socket.io-parser\");\nconst on_1 = require(\"./on\");\nconst Backoff = require(\"backo2\");\n\n\nclass Manager extends Emitter {\n    constructor(uri, opts) {\n        super();\n        this.nsps = {};\n        this.subs = [];\n        if (uri && \"object\" === typeof uri) {\n            opts = uri;\n            uri = undefined;\n        }\n        opts = opts || {};\n        opts.path = opts.path || \"/socket.io\";\n        this.opts = opts;\n        this.reconnection(opts.reconnection !== false);\n        this.reconnectionAttempts(opts.reconnectionAttempts || Infinity);\n        this.reconnectionDelay(opts.reconnectionDelay || 1000);\n        this.reconnectionDelayMax(opts.reconnectionDelayMax || 5000);\n        this.randomizationFactor(opts.randomizationFactor || 0.5);\n        this.backoff = new Backoff({\n            min: this.reconnectionDelay(),\n            max: this.reconnectionDelayMax(),\n            jitter: this.randomizationFactor(),\n        });\n        this.timeout(null == opts.timeout ? 20000 : opts.timeout);\n        this._readyState = \"closed\";\n        this.uri = uri;\n        const _parser = opts.parser || parser;\n        this.encoder = new _parser.Encoder();\n        this.decoder = new _parser.Decoder();\n        this._autoConnect = opts.autoConnect !== false;\n        if (this._autoConnect)\n            this.open();\n    }\n    reconnection(v) {\n        if (!arguments.length)\n            return this._reconnection;\n        this._reconnection = !!v;\n        return this;\n    }\n    reconnectionAttempts(v) {\n        if (v === undefined)\n            return this._reconnectionAttempts;\n        this._reconnectionAttempts = v;\n        return this;\n    }\n    reconnectionDelay(v) {\n        var _a;\n        if (v === undefined)\n            return this._reconnectionDelay;\n        this._reconnectionDelay = v;\n        (_a = this.backoff) === null || _a === void 0 ? void 0 : _a.setMin(v);\n        return this;\n    }\n    randomizationFactor(v) {\n        var _a;\n        if (v === undefined)\n            return this._randomizationFactor;\n        this._randomizationFactor = v;\n        (_a = this.backoff) === null || _a === void 0 ? void 0 : _a.setJitter(v);\n        return this;\n    }\n    reconnectionDelayMax(v) {\n        var _a;\n        if (v === undefined)\n            return this._reconnectionDelayMax;\n        this._reconnectionDelayMax = v;\n        (_a = this.backoff) === null || _a === void 0 ? void 0 : _a.setMax(v);\n        return this;\n    }\n    timeout(v) {\n        if (!arguments.length)\n            return this._timeout;\n        this._timeout = v;\n        return this;\n    }\n    /**\n     * Starts trying to reconnect if reconnection is enabled and we have not\n     * started reconnecting yet\n     *\n     * @private\n     */\n    maybeReconnectOnOpen() {\n        // Only try to reconnect if it's the first time we're connecting\n        if (!this._reconnecting &&\n            this._reconnection &&\n            this.backoff.attempts === 0) {\n            // keeps reconnection from firing twice for the same reconnection loop\n            this.reconnect();\n        }\n    }\n    /**\n     * Sets the current transport `socket`.\n     *\n     * @param {Function} fn - optional, callback\n     * @return self\n     * @public\n     */\n    open(fn) {\n\n\n        if (~this._readyState.indexOf(\"open\"))\n            return this;\n\n\n        this.engine = eio(this.uri, this.opts);\n        const socket = this.engine;\n        const self = this;\n        this._readyState = \"opening\";\n        this.skipReconnect = false;\n        // emit `open`\n        const openSubDestroy = on_1.on(socket, \"open\", function () {\n            self.onopen();\n            fn && fn();\n        });\n        // emit `error`\n        const errorSub = on_1.on(socket, \"error\", (err) => {\n\n\n            self.cleanup();\n            self._readyState = \"closed\";\n            super.emit(\"error\", err);\n            if (fn) {\n                fn(err);\n            }\n            else {\n                // Only do this if there is no fn to handle the error\n                self.maybeReconnectOnOpen();\n            }\n        });\n        if (false !== this._timeout) {\n            const timeout = this._timeout;\n\n\n            if (timeout === 0) {\n                openSubDestroy(); // prevents a race condition with the 'open' event\n            }\n            // set timer\n            const timer = setTimeout(() => {\n\n\n                openSubDestroy();\n                socket.close();\n                socket.emit(\"error\", new Error(\"timeout\"));\n            }, timeout);\n            this.subs.push(function subDestroy() {\n                clearTimeout(timer);\n            });\n        }\n        this.subs.push(openSubDestroy);\n        this.subs.push(errorSub);\n        return this;\n    }\n    /**\n     * Alias for open()\n     *\n     * @return self\n     * @public\n     */\n    connect(fn) {\n        return this.open(fn);\n    }\n    /**\n     * Called upon transport open.\n     *\n     * @private\n     */\n    onopen() {\n\n\n        // clear old subs\n        this.cleanup();\n        // mark as open\n        this._readyState = \"open\";\n        super.emit(\"open\");\n        // add new subs\n        const socket = this.engine;\n        this.subs.push(on_1.on(socket, \"ping\", this.onping.bind(this)), on_1.on(socket, \"data\", this.ondata.bind(this)), on_1.on(socket, \"error\", this.onerror.bind(this)), on_1.on(socket, \"close\", this.onclose.bind(this)), on_1.on(this.decoder, \"decoded\", this.ondecoded.bind(this)));\n    }\n    /**\n     * Called upon a ping.\n     *\n     * @private\n     */\n    onping() {\n        super.emit(\"ping\");\n    }\n    /**\n     * Called with data.\n     *\n     * @private\n     */\n    ondata(data) {\n        this.decoder.add(data);\n    }\n    /**\n     * Called when parser fully decodes a packet.\n     *\n     * @private\n     */\n    ondecoded(packet) {\n        super.emit(\"packet\", packet);\n    }\n    /**\n     * Called upon socket error.\n     *\n     * @private\n     */\n    onerror(err) {\n\n\n        super.emit(\"error\", err);\n    }\n    /**\n     * Creates a new socket for the given `nsp`.\n     *\n     * @return {Socket}\n     * @public\n     */\n    socket(nsp, opts) {\n        let socket = this.nsps[nsp];\n        if (!socket) {\n            socket = new socket_1.Socket(this, nsp, opts);\n            this.nsps[nsp] = socket;\n        }\n        return socket;\n    }\n    /**\n     * Called upon a socket close.\n     *\n     * @param socket\n     * @private\n     */\n    _destroy(socket) {\n        const nsps = Object.keys(this.nsps);\n        for (const nsp of nsps) {\n            const socket = this.nsps[nsp];\n            if (socket.active) {\n\n\n                return;\n            }\n        }\n        this._close();\n    }\n    /**\n     * Writes a packet.\n     *\n     * @param packet\n     * @private\n     */\n    _packet(packet) {\n\n\n        const encodedPackets = this.encoder.encode(packet);\n        for (let i = 0; i < encodedPackets.length; i++) {\n            this.engine.write(encodedPackets[i], packet.options);\n        }\n    }\n    /**\n     * Clean up transport subscriptions and packet buffer.\n     *\n     * @private\n     */\n    cleanup() {\n\n\n        this.subs.forEach((subDestroy) => subDestroy());\n        this.subs.length = 0;\n        this.decoder.destroy();\n    }\n    /**\n     * Close the current socket.\n     *\n     * @private\n     */\n    _close() {\n\n\n        this.skipReconnect = true;\n        this._reconnecting = false;\n        if (\"opening\" === this._readyState) {\n            // `onclose` will not fire because\n            // an open event never happened\n            this.cleanup();\n        }\n        this.backoff.reset();\n        this._readyState = \"closed\";\n        if (this.engine)\n            this.engine.close();\n    }\n    /**\n     * Alias for close()\n     *\n     * @private\n     */\n    disconnect() {\n        return this._close();\n    }\n    /**\n     * Called upon engine close.\n     *\n     * @private\n     */\n    onclose(reason) {\n\n\n        this.cleanup();\n        this.backoff.reset();\n        this._readyState = \"closed\";\n        super.emit(\"close\", reason);\n        if (this._reconnection && !this.skipReconnect) {\n            this.reconnect();\n        }\n    }\n    /**\n     * Attempt a reconnection.\n     *\n     * @private\n     */\n    reconnect() {\n        if (this._reconnecting || this.skipReconnect)\n            return this;\n        const self = this;\n        if (this.backoff.attempts >= this._reconnectionAttempts) {\n\n\n            this.backoff.reset();\n            super.emit(\"reconnect_failed\");\n            this._reconnecting = false;\n        }\n        else {\n            const delay = this.backoff.duration();\n\n\n            this._reconnecting = true;\n            const timer = setTimeout(() => {\n                if (self.skipReconnect)\n                    return;\n\n\n                super.emit(\"reconnect_attempt\", self.backoff.attempts);\n                // check again for the case socket closed in above events\n                if (self.skipReconnect)\n                    return;\n                self.open((err) => {\n                    if (err) {\n\n\n                        self._reconnecting = false;\n                        self.reconnect();\n                        super.emit(\"reconnect_error\", err);\n                    }\n                    else {\n\n\n                        self.onreconnect();\n                    }\n                });\n            }, delay);\n            this.subs.push(function subDestroy() {\n                clearTimeout(timer);\n            });\n        }\n    }\n    /**\n     * Called upon successful reconnect.\n     *\n     * @private\n     */\n    onreconnect() {\n        const attempt = this.backoff.attempts;\n        this._reconnecting = false;\n        this.backoff.reset();\n        super.emit(\"reconnect\", attempt);\n    }\n}\nexports.Manager = Manager;\n","const XMLHttpRequest = require(\"xmlhttprequest-ssl\");\nconst XHR = require(\"./polling-xhr\");\nconst JSONP = require(\"./polling-jsonp\");\nconst websocket = require(\"./websocket\");\n\nexports.polling = polling;\nexports.websocket = websocket;\n\n/**\n * Polling transport polymorphic constructor.\n * Decides on xhr vs jsonp based on feature detection.\n *\n * @api private\n */\n\nfunction polling(opts) {\n  let xhr;\n  let xd = false;\n  let xs = false;\n  const jsonp = false !== opts.jsonp;\n\n  if (typeof location !== \"undefined\") {\n    const isSSL = \"https:\" === location.protocol;\n    let port = location.port;\n\n    // some user agents have empty `location.port`\n    if (!port) {\n      port = isSSL ? 443 : 80;\n    }\n\n    xd = opts.hostname !== location.hostname || port !== opts.port;\n    xs = opts.secure !== isSSL;\n  }\n\n  opts.xdomain = xd;\n  opts.xscheme = xs;\n  xhr = new XMLHttpRequest(opts);\n\n  if (\"open\" in xhr && !opts.forceJSONP) {\n    return new XHR(opts);\n  } else {\n    if (!jsonp) throw new Error(\"JSONP disabled\");\n    return new JSONP(opts);\n  }\n}\n","// browser shim for xmlhttprequest module\n\nconst hasCORS = require(\"has-cors\");\nconst globalThis = require(\"./globalThis\");\n\nmodule.exports = function(opts) {\n  const xdomain = opts.xdomain;\n\n  // scheme must be same when usign XDomainRequest\n  // http://blogs.msdn.com/b/ieinternals/archive/2010/05/13/xdomainrequest-restrictions-limitations-and-workarounds.aspx\n  const xscheme = opts.xscheme;\n\n  // XDomainRequest has a flow of not sending cookie, therefore it should be disabled as a default.\n  // https://github.com/Automattic/engine.io-client/pull/217\n  const enablesXDR = opts.enablesXDR;\n\n  // XMLHttpRequest can be disabled on IE\n  try {\n    if (\"undefined\" !== typeof XMLHttpRequest && (!xdomain || hasCORS)) {\n      return new XMLHttpRequest();\n    }\n  } catch (e) {}\n\n  // Use XDomainRequest for IE8 if enablesXDR is true\n  // because loading bar keeps flashing when using jsonp-polling\n  // https://github.com/yujiosaka/socke.io-ie8-loading-example\n  try {\n    if (\"undefined\" !== typeof XDomainRequest && !xscheme && enablesXDR) {\n      return new XDomainRequest();\n    }\n  } catch (e) {}\n\n  if (!xdomain) {\n    try {\n      return new globalThis[[\"Active\"].concat(\"Object\").join(\"X\")](\n        \"Microsoft.XMLHTTP\"\n      );\n    } catch (e) {}\n  }\n};\n","const Transport = require(\"../transport\");\nconst parseqs = require(\"parseqs\");\nconst parser = require(\"engine.io-parser\");\nconst yeast = require(\"yeast\");\n\n\n\n\nclass Polling extends Transport {\n  /**\n   * Transport name.\n   */\n  get name() {\n    return \"polling\";\n  }\n\n  /**\n   * Opens the socket (triggers polling). We write a PING message to determine\n   * when the transport is open.\n   *\n   * @api private\n   */\n  doOpen() {\n    this.poll();\n  }\n\n  /**\n   * Pauses polling.\n   *\n   * @param {Function} callback upon buffers are flushed and transport is paused\n   * @api private\n   */\n  pause(onPause) {\n    const self = this;\n\n    this.readyState = \"pausing\";\n\n    function pause() {\n\n\n      self.readyState = \"paused\";\n      onPause();\n    }\n\n    if (this.polling || !this.writable) {\n      let total = 0;\n\n      if (this.polling) {\n\n\n        total++;\n        this.once(\"pollComplete\", function() {\n\n\n          --total || pause();\n        });\n      }\n\n      if (!this.writable) {\n\n\n        total++;\n        this.once(\"drain\", function() {\n\n\n          --total || pause();\n        });\n      }\n    } else {\n      pause();\n    }\n  }\n\n  /**\n   * Starts polling cycle.\n   *\n   * @api public\n   */\n  poll() {\n\n\n    this.polling = true;\n    this.doPoll();\n    this.emit(\"poll\");\n  }\n\n  /**\n   * Overloads onData to detect payloads.\n   *\n   * @api private\n   */\n  onData(data) {\n    const self = this;\n\n\n    const callback = function(packet, index, total) {\n      // if its the first message we consider the transport open\n      if (\"opening\" === self.readyState && packet.type === \"open\") {\n        self.onOpen();\n      }\n\n      // if its a close packet, we close the ongoing requests\n      if (\"close\" === packet.type) {\n        self.onClose();\n        return false;\n      }\n\n      // otherwise bypass onData and handle the message\n      self.onPacket(packet);\n    };\n\n    // decode payload\n    parser.decodePayload(data, this.socket.binaryType).forEach(callback);\n\n    // if an event did not trigger closing\n    if (\"closed\" !== this.readyState) {\n      // if we got data we're not polling\n      this.polling = false;\n      this.emit(\"pollComplete\");\n\n      if (\"open\" === this.readyState) {\n        this.poll();\n      } else {\n\n\n      }\n    }\n  }\n\n  /**\n   * For polling, send a close packet.\n   *\n   * @api private\n   */\n  doClose() {\n    const self = this;\n\n    function close() {\n\n\n      self.write([{ type: \"close\" }]);\n    }\n\n    if (\"open\" === this.readyState) {\n\n\n      close();\n    } else {\n      // in case we're trying to close while\n      // handshaking is in progress (GH-164)\n\n\n      this.once(\"open\", close);\n    }\n  }\n\n  /**\n   * Writes a packets payload.\n   *\n   * @param {Array} data packets\n   * @param {Function} drain callback\n   * @api private\n   */\n  write(packets) {\n    this.writable = false;\n\n    parser.encodePayload(packets, data => {\n      this.doWrite(data, () => {\n        this.writable = true;\n        this.emit(\"drain\");\n      });\n    });\n  }\n\n  /**\n   * Generates uri for connection.\n   *\n   * @api private\n   */\n  uri() {\n    let query = this.query || {};\n    const schema = this.opts.secure ? \"https\" : \"http\";\n    let port = \"\";\n\n    // cache busting is forced\n    if (false !== this.opts.timestampRequests) {\n      query[this.opts.timestampParam] = yeast();\n    }\n\n    if (!this.supportsBinary && !query.sid) {\n      query.b64 = 1;\n    }\n\n    query = parseqs.encode(query);\n\n    // avoid port if default for schema\n    if (\n      this.opts.port &&\n      ((\"https\" === schema && Number(this.opts.port) !== 443) ||\n        (\"http\" === schema && Number(this.opts.port) !== 80))\n    ) {\n      port = \":\" + this.opts.port;\n    }\n\n    // prepend ? to query\n    if (query.length) {\n      query = \"?\" + query;\n    }\n\n    const ipv6 = this.opts.hostname.indexOf(\":\") !== -1;\n    return (\n      schema +\n      \"://\" +\n      (ipv6 ? \"[\" + this.opts.hostname + \"]\" : this.opts.hostname) +\n      port +\n      this.opts.path +\n      query\n    );\n  }\n}\n\nmodule.exports = Polling;\n","const PACKET_TYPES = Object.create(null); // no Map = no polyfill\nPACKET_TYPES[\"open\"] = \"0\";\nPACKET_TYPES[\"close\"] = \"1\";\nPACKET_TYPES[\"ping\"] = \"2\";\nPACKET_TYPES[\"pong\"] = \"3\";\nPACKET_TYPES[\"message\"] = \"4\";\nPACKET_TYPES[\"upgrade\"] = \"5\";\nPACKET_TYPES[\"noop\"] = \"6\";\n\nconst PACKET_TYPES_REVERSE = Object.create(null);\nObject.keys(PACKET_TYPES).forEach(key => {\n  PACKET_TYPES_REVERSE[PACKET_TYPES[key]] = key;\n});\n\nconst ERROR_PACKET = { type: \"error\", data: \"parser error\" };\n\nmodule.exports = {\n  PACKET_TYPES,\n  PACKET_TYPES_REVERSE,\n  ERROR_PACKET\n};\n","'use strict';\n\nvar alphabet = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-_'.split('')\n  , length = 64\n  , map = {}\n  , seed = 0\n  , i = 0\n  , prev;\n\n/**\n * Return a string representing the specified number.\n *\n * @param {Number} num The number to convert.\n * @returns {String} The string representation of the number.\n * @api public\n */\nfunction encode(num) {\n  var encoded = '';\n\n  do {\n    encoded = alphabet[num % length] + encoded;\n    num = Math.floor(num / length);\n  } while (num > 0);\n\n  return encoded;\n}\n\n/**\n * Return the integer value specified by the given string.\n *\n * @param {String} str The string to convert.\n * @returns {Number} The integer value represented by the string.\n * @api public\n */\nfunction decode(str) {\n  var decoded = 0;\n\n  for (i = 0; i < str.length; i++) {\n    decoded = decoded * length + map[str.charAt(i)];\n  }\n\n  return decoded;\n}\n\n/**\n * Yeast: A tiny growing id generator.\n *\n * @returns {String} A unique id.\n * @api public\n */\nfunction yeast() {\n  var now = encode(+new Date());\n\n  if (now !== prev) return seed = 0, prev = now;\n  return now +'.'+ encode(seed++);\n}\n\n//\n// Map each character to its index.\n//\nfor (; i < length; i++) map[alphabet[i]] = i;\n\n//\n// Expose the `yeast`, `encode` and `decode` functions.\n//\nyeast.encode = encode;\nyeast.decode = decode;\nmodule.exports = yeast;\n","module.exports.pick = (obj, ...attr) => {\n  return attr.reduce((acc, k) => {\n    if (obj.hasOwnProperty(k)) {\n      acc[k] = obj[k];\n    }\n    return acc;\n  }, {});\n};\n","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.Socket = void 0;\nconst socket_io_parser_1 = require(\"socket.io-parser\");\nconst Emitter = require(\"component-emitter\");\nconst on_1 = require(\"./on\");\n\n\n/**\n * Internal events.\n * These events can't be emitted by the user.\n */\nconst RESERVED_EVENTS = Object.freeze({\n    connect: 1,\n    connect_error: 1,\n    disconnect: 1,\n    disconnecting: 1,\n    // EventEmitter reserved events: https://nodejs.org/api/events.html#events_event_newlistener\n    newListener: 1,\n    removeListener: 1,\n});\nclass Socket extends Emitter {\n    /**\n     * `Socket` constructor.\n     *\n     * @public\n     */\n    constructor(io, nsp, opts) {\n        super();\n        this.receiveBuffer = [];\n        this.sendBuffer = [];\n        this.ids = 0;\n        this.acks = {};\n        this.flags = {};\n        this.io = io;\n        this.nsp = nsp;\n        this.ids = 0;\n        this.acks = {};\n        this.receiveBuffer = [];\n        this.sendBuffer = [];\n        this.connected = false;\n        this.disconnected = true;\n        this.flags = {};\n        if (opts && opts.auth) {\n            this.auth = opts.auth;\n        }\n        if (this.io._autoConnect)\n            this.open();\n    }\n    /**\n     * Subscribe to open, close and packet events\n     *\n     * @private\n     */\n    subEvents() {\n        if (this.subs)\n            return;\n        const io = this.io;\n        this.subs = [\n            on_1.on(io, \"open\", this.onopen.bind(this)),\n            on_1.on(io, \"packet\", this.onpacket.bind(this)),\n            on_1.on(io, \"error\", this.onerror.bind(this)),\n            on_1.on(io, \"close\", this.onclose.bind(this)),\n        ];\n    }\n    /**\n     * Whether the Socket will try to reconnect when its Manager connects or reconnects\n     */\n    get active() {\n        return !!this.subs;\n    }\n    /**\n     * \"Opens\" the socket.\n     *\n     * @public\n     */\n    connect() {\n        if (this.connected)\n            return this;\n        this.subEvents();\n        if (!this.io[\"_reconnecting\"])\n            this.io.open(); // ensure open\n        if (\"open\" === this.io._readyState)\n            this.onopen();\n        return this;\n    }\n    /**\n     * Alias for connect()\n     */\n    open() {\n        return this.connect();\n    }\n    /**\n     * Sends a `message` event.\n     *\n     * @return self\n     * @public\n     */\n    send(...args) {\n        args.unshift(\"message\");\n        this.emit.apply(this, args);\n        return this;\n    }\n    /**\n     * Override `emit`.\n     * If the event is in `events`, it's emitted normally.\n     *\n     * @param ev - event name\n     * @return self\n     * @public\n     */\n    emit(ev, ...args) {\n        if (RESERVED_EVENTS.hasOwnProperty(ev)) {\n            throw new Error('\"' + ev + '\" is a reserved event name');\n        }\n        args.unshift(ev);\n        const packet = {\n            type: socket_io_parser_1.PacketType.EVENT,\n            data: args,\n        };\n        packet.options = {};\n        packet.options.compress = this.flags.compress !== false;\n        // event ack callback\n        if (\"function\" === typeof args[args.length - 1]) {\n\n\n            this.acks[this.ids] = args.pop();\n            packet.id = this.ids++;\n        }\n        const isTransportWritable = this.io.engine &&\n            this.io.engine.transport &&\n            this.io.engine.transport.writable;\n        const discardPacket = this.flags.volatile && (!isTransportWritable || !this.connected);\n        if (discardPacket) {\n\n\n        }\n        else if (this.connected) {\n            this.packet(packet);\n        }\n        else {\n            this.sendBuffer.push(packet);\n        }\n        this.flags = {};\n        return this;\n    }\n    /**\n     * Sends a packet.\n     *\n     * @param packet\n     * @private\n     */\n    packet(packet) {\n        packet.nsp = this.nsp;\n        this.io._packet(packet);\n    }\n    /**\n     * Called upon engine `open`.\n     *\n     * @private\n     */\n    onopen() {\n\n\n        if (typeof this.auth == \"function\") {\n            this.auth((data) => {\n                this.packet({ type: socket_io_parser_1.PacketType.CONNECT, data });\n            });\n        }\n        else {\n            this.packet({ type: socket_io_parser_1.PacketType.CONNECT, data: this.auth });\n        }\n    }\n    /**\n     * Called upon engine or manager `error`.\n     *\n     * @param err\n     * @private\n     */\n    onerror(err) {\n        if (!this.connected) {\n            super.emit(\"connect_error\", err);\n        }\n    }\n    /**\n     * Called upon engine `close`.\n     *\n     * @param reason\n     * @private\n     */\n    onclose(reason) {\n\n\n        this.connected = false;\n        this.disconnected = true;\n        delete this.id;\n        super.emit(\"disconnect\", reason);\n    }\n    /**\n     * Called with socket packet.\n     *\n     * @param packet\n     * @private\n     */\n    onpacket(packet) {\n        const sameNamespace = packet.nsp === this.nsp;\n        if (!sameNamespace)\n            return;\n        switch (packet.type) {\n            case socket_io_parser_1.PacketType.CONNECT:\n                if (packet.data && packet.data.sid) {\n                    const id = packet.data.sid;\n                    this.onconnect(id);\n                }\n                else {\n                    super.emit(\"connect_error\", new Error(\"It seems you are trying to reach a Socket.IO server in v2.x with a v3.x client, but they are not compatible (more information here: https://socket.io/docs/v3/migrating-from-2-x-to-3-0/)\"));\n                }\n                break;\n            case socket_io_parser_1.PacketType.EVENT:\n                this.onevent(packet);\n                break;\n            case socket_io_parser_1.PacketType.BINARY_EVENT:\n                this.onevent(packet);\n                break;\n            case socket_io_parser_1.PacketType.ACK:\n                this.onack(packet);\n                break;\n            case socket_io_parser_1.PacketType.BINARY_ACK:\n                this.onack(packet);\n                break;\n            case socket_io_parser_1.PacketType.DISCONNECT:\n                this.ondisconnect();\n                break;\n            case socket_io_parser_1.PacketType.CONNECT_ERROR:\n                const err = new Error(packet.data.message);\n                // @ts-ignore\n                err.data = packet.data.data;\n                super.emit(\"connect_error\", err);\n                break;\n        }\n    }\n    /**\n     * Called upon a server event.\n     *\n     * @param packet\n     * @private\n     */\n    onevent(packet) {\n        const args = packet.data || [];\n\n\n        if (null != packet.id) {\n\n\n            args.push(this.ack(packet.id));\n        }\n        if (this.connected) {\n            this.emitEvent(args);\n        }\n        else {\n            this.receiveBuffer.push(Object.freeze(args));\n        }\n    }\n    emitEvent(args) {\n        if (this._anyListeners && this._anyListeners.length) {\n            const listeners = this._anyListeners.slice();\n            for (const listener of listeners) {\n                listener.apply(this, args);\n            }\n        }\n        super.emit.apply(this, args);\n    }\n    /**\n     * Produces an ack callback to emit with an event.\n     *\n     * @private\n     */\n    ack(id) {\n        const self = this;\n        let sent = false;\n        return function (...args) {\n            // prevent double callbacks\n            if (sent)\n                return;\n            sent = true;\n\n\n            self.packet({\n                type: socket_io_parser_1.PacketType.ACK,\n                id: id,\n                data: args,\n            });\n        };\n    }\n    /**\n     * Called upon a server acknowlegement.\n     *\n     * @param packet\n     * @private\n     */\n    onack(packet) {\n        const ack = this.acks[packet.id];\n        if (\"function\" === typeof ack) {\n\n\n            ack.apply(this, packet.data);\n            delete this.acks[packet.id];\n        }\n        else {\n\n\n        }\n    }\n    /**\n     * Called upon server connect.\n     *\n     * @private\n     */\n    onconnect(id) {\n\n\n        this.id = id;\n        this.connected = true;\n        this.disconnected = false;\n        super.emit(\"connect\");\n        this.emitBuffered();\n    }\n    /**\n     * Emit buffered events (received and emitted).\n     *\n     * @private\n     */\n    emitBuffered() {\n        this.receiveBuffer.forEach((args) => this.emitEvent(args));\n        this.receiveBuffer = [];\n        this.sendBuffer.forEach((packet) => this.packet(packet));\n        this.sendBuffer = [];\n    }\n    /**\n     * Called upon server disconnect.\n     *\n     * @private\n     */\n    ondisconnect() {\n\n\n        this.destroy();\n        this.onclose(\"io server disconnect\");\n    }\n    /**\n     * Called upon forced client/server side disconnections,\n     * this method ensures the manager stops tracking us and\n     * that reconnections don't get triggered for this.\n     *\n     * @private\n     */\n    destroy() {\n        if (this.subs) {\n            // clean subscriptions to avoid reconnections\n            this.subs.forEach((subDestroy) => subDestroy());\n            this.subs = undefined;\n        }\n        this.io[\"_destroy\"](this);\n    }\n    /**\n     * Disconnects the socket manually.\n     *\n     * @return self\n     * @public\n     */\n    disconnect() {\n        if (this.connected) {\n\n\n            this.packet({ type: socket_io_parser_1.PacketType.DISCONNECT });\n        }\n        // remove socket from pool\n        this.destroy();\n        if (this.connected) {\n            // fire events\n            this.onclose(\"io client disconnect\");\n        }\n        return this;\n    }\n    /**\n     * Alias for disconnect()\n     *\n     * @return self\n     * @public\n     */\n    close() {\n        return this.disconnect();\n    }\n    /**\n     * Sets the compress flag.\n     *\n     * @param compress - if `true`, compresses the sending data\n     * @return self\n     * @public\n     */\n    compress(compress) {\n        this.flags.compress = compress;\n        return this;\n    }\n    /**\n     * Sets a modifier for a subsequent event emission that the event message will be dropped when this socket is not\n     * ready to send messages.\n     *\n     * @returns self\n     * @public\n     */\n    get volatile() {\n        this.flags.volatile = true;\n        return this;\n    }\n    /**\n     * Adds a listener that will be fired when any event is emitted. The event name is passed as the first argument to the\n     * callback.\n     *\n     * @param listener\n     * @public\n     */\n    onAny(listener) {\n        this._anyListeners = this._anyListeners || [];\n        this._anyListeners.push(listener);\n        return this;\n    }\n    /**\n     * Adds a listener that will be fired when any event is emitted. The event name is passed as the first argument to the\n     * callback. The listener is added to the beginning of the listeners array.\n     *\n     * @param listener\n     * @public\n     */\n    prependAny(listener) {\n        this._anyListeners = this._anyListeners || [];\n        this._anyListeners.unshift(listener);\n        return this;\n    }\n    /**\n     * Removes the listener that will be fired when any event is emitted.\n     *\n     * @param listener\n     * @public\n     */\n    offAny(listener) {\n        if (!this._anyListeners) {\n            return this;\n        }\n        if (listener) {\n            const listeners = this._anyListeners;\n            for (let i = 0; i < listeners.length; i++) {\n                if (listener === listeners[i]) {\n                    listeners.splice(i, 1);\n                    return this;\n                }\n            }\n        }\n        else {\n            this._anyListeners = [];\n        }\n        return this;\n    }\n    /**\n     * Returns an array of listeners that are listening for any event that is specified. This array can be manipulated,\n     * e.g. to remove listeners.\n     *\n     * @public\n     */\n    listenersAny() {\n        return this._anyListeners || [];\n    }\n}\nexports.Socket = Socket;\n","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.on = void 0;\nfunction on(obj, ev, fn) {\n    obj.on(ev, fn);\n    return function subDestroy() {\n        obj.off(ev, fn);\n    };\n}\nexports.on = on;\n","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.Socket = exports.io = exports.Manager = exports.protocol = void 0;\nconst url_1 = require(\"./url\");\nconst manager_1 = require(\"./manager\");\nconst socket_1 = require(\"./socket\");\nObject.defineProperty(exports, \"Socket\", { enumerable: true, get: function () { return socket_1.Socket; } });\n\n\n/**\n * Module exports.\n */\nmodule.exports = exports = lookup;\n/**\n * Managers cache.\n */\nconst cache = (exports.managers = {});\nfunction lookup(uri, opts) {\n    if (typeof uri === \"object\") {\n        opts = uri;\n        uri = undefined;\n    }\n    opts = opts || {};\n    const parsed = url_1.url(uri, opts.path);\n    const source = parsed.source;\n    const id = parsed.id;\n    const path = parsed.path;\n    const sameNamespace = cache[id] && path in cache[id][\"nsps\"];\n    const newConnection = opts.forceNew ||\n        opts[\"force new connection\"] ||\n        false === opts.multiplex ||\n        sameNamespace;\n    let io;\n    if (newConnection) {\n\n\n        io = new manager_1.Manager(source, opts);\n    }\n    else {\n        if (!cache[id]) {\n\n\n            cache[id] = new manager_1.Manager(source, opts);\n        }\n        io = cache[id];\n    }\n    if (parsed.query && !opts.query) {\n        opts.query = parsed.queryKey;\n    }\n    return io.socket(parsed.path, opts);\n}\nexports.io = lookup;\n/**\n * Protocol version.\n *\n * @public\n */\nvar socket_io_parser_1 = require(\"socket.io-parser\");\nObject.defineProperty(exports, \"protocol\", { enumerable: true, get: function () { return socket_io_parser_1.protocol; } });\n/**\n * `connect`.\n *\n * @param {String} uri\n * @public\n */\nexports.connect = lookup;\n/**\n * Expose constructors for standalone build.\n *\n * @public\n */\nvar manager_2 = require(\"./manager\");\nObject.defineProperty(exports, \"Manager\", { enumerable: true, get: function () { return manager_2.Manager; } });\n","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\nexports.url = void 0;\nconst parseuri = require(\"parseuri\");\n\n\n/**\n * URL parser.\n *\n * @param uri - url\n * @param path - the request path of the connection\n * @param loc - An object meant to mimic window.location.\n *        Defaults to window.location.\n * @public\n */\nfunction url(uri, path = \"\", loc) {\n    let obj = uri;\n    // default to window.location\n    loc = loc || (typeof location !== \"undefined\" && location);\n    if (null == uri)\n        uri = loc.protocol + \"//\" + loc.host;\n    // relative path support\n    if (typeof uri === \"string\") {\n        if (\"/\" === uri.charAt(0)) {\n            if (\"/\" === uri.charAt(1)) {\n                uri = loc.protocol + uri;\n            }\n            else {\n                uri = loc.host + uri;\n            }\n        }\n        if (!/^(https?|wss?):\\/\\//.test(uri)) {\n\n\n            if (\"undefined\" !== typeof loc) {\n                uri = loc.protocol + \"//\" + uri;\n            }\n            else {\n                uri = \"https://\" + uri;\n            }\n        }\n        // parse\n\n\n        obj = parseuri(uri);\n    }\n    // make sure we treat `localhost:80` and `localhost` equally\n    if (!obj.port) {\n        if (/^(http|ws)$/.test(obj.protocol)) {\n            obj.port = \"80\";\n        }\n        else if (/^(http|ws)s$/.test(obj.protocol)) {\n            obj.port = \"443\";\n        }\n    }\n    obj.path = obj.path || \"/\";\n    const ipv6 = obj.host.indexOf(\":\") !== -1;\n    const host = ipv6 ? \"[\" + obj.host + \"]\" : obj.host;\n    // define unique id\n    obj.id = obj.protocol + \"://\" + host + \":\" + obj.port + path;\n    // define href\n    obj.href =\n        obj.protocol +\n            \"://\" +\n            host +\n            (loc && loc.port === obj.port ? \"\" : \":\" + obj.port);\n    return obj;\n}\nexports.url = url;\n","const Socket = require(\"./socket\");\n\nmodule.exports = (uri, opts) => new Socket(uri, opts);\n\n/**\n * Expose deps for legacy compatibility\n * and standalone browser access.\n */\n\nmodule.exports.Socket = Socket;\nmodule.exports.protocol = Socket.protocol; // this is an int\nmodule.exports.Transport = require(\"./transport\");\nmodule.exports.transports = require(\"./transports/index\");\nmodule.exports.parser = require(\"engine.io-parser\");\n","const transports = require(\"./transports/index\");\nconst Emitter = require(\"component-emitter\");\n\n\nconst parser = require(\"engine.io-parser\");\nconst parseuri = require(\"parseuri\");\nconst parseqs = require(\"parseqs\");\n\nclass Socket extends Emitter {\n  /**\n   * Socket constructor.\n   *\n   * @param {String|Object} uri or options\n   * @param {Object} options\n   * @api public\n   */\n  constructor(uri, opts = {}) {\n    super();\n\n    if (uri && \"object\" === typeof uri) {\n      opts = uri;\n      uri = null;\n    }\n\n    if (uri) {\n      uri = parseuri(uri);\n      opts.hostname = uri.host;\n      opts.secure = uri.protocol === \"https\" || uri.protocol === \"wss\";\n      opts.port = uri.port;\n      if (uri.query) opts.query = uri.query;\n    } else if (opts.host) {\n      opts.hostname = parseuri(opts.host).host;\n    }\n\n    this.secure =\n      null != opts.secure\n        ? opts.secure\n        : typeof location !== \"undefined\" && \"https:\" === location.protocol;\n\n    if (opts.hostname && !opts.port) {\n      // if no port is specified manually, use the protocol default\n      opts.port = this.secure ? \"443\" : \"80\";\n    }\n\n    this.hostname =\n      opts.hostname ||\n      (typeof location !== \"undefined\" ? location.hostname : \"localhost\");\n    this.port =\n      opts.port ||\n      (typeof location !== \"undefined\" && location.port\n        ? location.port\n        : this.secure\n        ? 443\n        : 80);\n\n    this.transports = opts.transports || [\"polling\", \"websocket\"];\n    this.readyState = \"\";\n    this.writeBuffer = [];\n    this.prevBufferLen = 0;\n\n    this.opts = Object.assign(\n      {\n        path: \"/engine.io\",\n        agent: false,\n        withCredentials: false,\n        upgrade: true,\n        jsonp: true,\n        timestampParam: \"t\",\n        rememberUpgrade: false,\n        rejectUnauthorized: true,\n        perMessageDeflate: {\n          threshold: 1024\n        },\n        transportOptions: {}\n      },\n      opts\n    );\n\n    this.opts.path = this.opts.path.replace(/\\/$/, \"\") + \"/\";\n\n    if (typeof this.opts.query === \"string\") {\n      this.opts.query = parseqs.decode(this.opts.query);\n    }\n\n    // set on handshake\n    this.id = null;\n    this.upgrades = null;\n    this.pingInterval = null;\n    this.pingTimeout = null;\n\n    // set on heartbeat\n    this.pingTimeoutTimer = null;\n\n    if (typeof addEventListener === \"function\") {\n      addEventListener(\n        \"beforeunload\",\n        () => {\n          if (this.transport) {\n            // silently close the transport\n            this.transport.removeAllListeners();\n            this.transport.close();\n          }\n        },\n        false\n      );\n    }\n\n    this.open();\n  }\n\n  /**\n   * Creates transport of the given type.\n   *\n   * @param {String} transport name\n   * @return {Transport}\n   * @api private\n   */\n  createTransport(name) {\n\n\n    const query = clone(this.opts.query);\n\n    // append engine.io protocol identifier\n    query.EIO = parser.protocol;\n\n    // transport name\n    query.transport = name;\n\n    // session id if we already have one\n    if (this.id) query.sid = this.id;\n\n    const opts = Object.assign(\n      {},\n      this.opts.transportOptions[name],\n      this.opts,\n      {\n        query,\n        socket: this,\n        hostname: this.hostname,\n        secure: this.secure,\n        port: this.port\n      }\n    );\n\n\n\n\n    return new transports[name](opts);\n  }\n\n  /**\n   * Initializes transport to use and starts probe.\n   *\n   * @api private\n   */\n  open() {\n    let transport;\n    if (\n      this.opts.rememberUpgrade &&\n      Socket.priorWebsocketSuccess &&\n      this.transports.indexOf(\"websocket\") !== -1\n    ) {\n      transport = \"websocket\";\n    } else if (0 === this.transports.length) {\n      // Emit error on next tick so it can be listened to\n      const self = this;\n      setTimeout(function() {\n        self.emit(\"error\", \"No transports available\");\n      }, 0);\n      return;\n    } else {\n      transport = this.transports[0];\n    }\n    this.readyState = \"opening\";\n\n    // Retry with the next transport if the transport is disabled (jsonp: false)\n    try {\n      transport = this.createTransport(transport);\n    } catch (e) {\n\n\n      this.transports.shift();\n      this.open();\n      return;\n    }\n\n    transport.open();\n    this.setTransport(transport);\n  }\n\n  /**\n   * Sets the current transport. Disables the existing one (if any).\n   *\n   * @api private\n   */\n  setTransport(transport) {\n\n\n    const self = this;\n\n    if (this.transport) {\n\n\n      this.transport.removeAllListeners();\n    }\n\n    // set up transport\n    this.transport = transport;\n\n    // set up transport listeners\n    transport\n      .on(\"drain\", function() {\n        self.onDrain();\n      })\n      .on(\"packet\", function(packet) {\n        self.onPacket(packet);\n      })\n      .on(\"error\", function(e) {\n        self.onError(e);\n      })\n      .on(\"close\", function() {\n        self.onClose(\"transport close\");\n      });\n  }\n\n  /**\n   * Probes a transport.\n   *\n   * @param {String} transport name\n   * @api private\n   */\n  probe(name) {\n\n\n    let transport = this.createTransport(name, { probe: 1 });\n    let failed = false;\n    const self = this;\n\n    Socket.priorWebsocketSuccess = false;\n\n    function onTransportOpen() {\n      if (self.onlyBinaryUpgrades) {\n        const upgradeLosesBinary =\n          !this.supportsBinary && self.transport.supportsBinary;\n        failed = failed || upgradeLosesBinary;\n      }\n      if (failed) return;\n\n\n\n      transport.send([{ type: \"ping\", data: \"probe\" }]);\n      transport.once(\"packet\", function(msg) {\n        if (failed) return;\n        if (\"pong\" === msg.type && \"probe\" === msg.data) {\n\n\n          self.upgrading = true;\n          self.emit(\"upgrading\", transport);\n          if (!transport) return;\n          Socket.priorWebsocketSuccess = \"websocket\" === transport.name;\n\n\n\n          self.transport.pause(function() {\n            if (failed) return;\n            if (\"closed\" === self.readyState) return;\n\n\n\n            cleanup();\n\n            self.setTransport(transport);\n            transport.send([{ type: \"upgrade\" }]);\n            self.emit(\"upgrade\", transport);\n            transport = null;\n            self.upgrading = false;\n            self.flush();\n          });\n        } else {\n\n\n          const err = new Error(\"probe error\");\n          err.transport = transport.name;\n          self.emit(\"upgradeError\", err);\n        }\n      });\n    }\n\n    function freezeTransport() {\n      if (failed) return;\n\n      // Any callback called by transport should be ignored since now\n      failed = true;\n\n      cleanup();\n\n      transport.close();\n      transport = null;\n    }\n\n    // Handle any error that happens while probing\n    function onerror(err) {\n      const error = new Error(\"probe error: \" + err);\n      error.transport = transport.name;\n\n      freezeTransport();\n\n\n\n\n      self.emit(\"upgradeError\", error);\n    }\n\n    function onTransportClose() {\n      onerror(\"transport closed\");\n    }\n\n    // When the socket is closed while we're probing\n    function onclose() {\n      onerror(\"socket closed\");\n    }\n\n    // When the socket is upgraded while we're probing\n    function onupgrade(to) {\n      if (transport && to.name !== transport.name) {\n\n\n        freezeTransport();\n      }\n    }\n\n    // Remove all listeners on the transport and on self\n    function cleanup() {\n      transport.removeListener(\"open\", onTransportOpen);\n      transport.removeListener(\"error\", onerror);\n      transport.removeListener(\"close\", onTransportClose);\n      self.removeListener(\"close\", onclose);\n      self.removeListener(\"upgrading\", onupgrade);\n    }\n\n    transport.once(\"open\", onTransportOpen);\n    transport.once(\"error\", onerror);\n    transport.once(\"close\", onTransportClose);\n\n    this.once(\"close\", onclose);\n    this.once(\"upgrading\", onupgrade);\n\n    transport.open();\n  }\n\n  /**\n   * Called when connection is deemed open.\n   *\n   * @api public\n   */\n  onOpen() {\n\n\n    this.readyState = \"open\";\n    Socket.priorWebsocketSuccess = \"websocket\" === this.transport.name;\n    this.emit(\"open\");\n    this.flush();\n\n    // we check for `readyState` in case an `open`\n    // listener already closed the socket\n    if (\n      \"open\" === this.readyState &&\n      this.opts.upgrade &&\n      this.transport.pause\n    ) {\n\n\n      let i = 0;\n      const l = this.upgrades.length;\n      for (; i < l; i++) {\n        this.probe(this.upgrades[i]);\n      }\n    }\n  }\n\n  /**\n   * Handles a packet.\n   *\n   * @api private\n   */\n  onPacket(packet) {\n    if (\n      \"opening\" === this.readyState ||\n      \"open\" === this.readyState ||\n      \"closing\" === this.readyState\n    ) {\n\n\n\n      this.emit(\"packet\", packet);\n\n      // Socket is live - any packet counts\n      this.emit(\"heartbeat\");\n\n      switch (packet.type) {\n        case \"open\":\n          this.onHandshake(JSON.parse(packet.data));\n          break;\n\n        case \"ping\":\n          this.resetPingTimeout();\n          this.sendPacket(\"pong\");\n          this.emit(\"pong\");\n          break;\n\n        case \"error\":\n          const err = new Error(\"server error\");\n          err.code = packet.data;\n          this.onError(err);\n          break;\n\n        case \"message\":\n          this.emit(\"data\", packet.data);\n          this.emit(\"message\", packet.data);\n          break;\n      }\n    } else {\n\n\n    }\n  }\n\n  /**\n   * Called upon handshake completion.\n   *\n   * @param {Object} handshake obj\n   * @api private\n   */\n  onHandshake(data) {\n    this.emit(\"handshake\", data);\n    this.id = data.sid;\n    this.transport.query.sid = data.sid;\n    this.upgrades = this.filterUpgrades(data.upgrades);\n    this.pingInterval = data.pingInterval;\n    this.pingTimeout = data.pingTimeout;\n    this.onOpen();\n    // In case open handler closes socket\n    if (\"closed\" === this.readyState) return;\n    this.resetPingTimeout();\n  }\n\n  /**\n   * Sets and resets ping timeout timer based on server pings.\n   *\n   * @api private\n   */\n  resetPingTimeout() {\n    clearTimeout(this.pingTimeoutTimer);\n    this.pingTimeoutTimer = setTimeout(() => {\n      this.onClose(\"ping timeout\");\n    }, this.pingInterval + this.pingTimeout);\n  }\n\n  /**\n   * Called on `drain` event\n   *\n   * @api private\n   */\n  onDrain() {\n    this.writeBuffer.splice(0, this.prevBufferLen);\n\n    // setting prevBufferLen = 0 is very important\n    // for example, when upgrading, upgrade packet is sent over,\n    // and a nonzero prevBufferLen could cause problems on `drain`\n    this.prevBufferLen = 0;\n\n    if (0 === this.writeBuffer.length) {\n      this.emit(\"drain\");\n    } else {\n      this.flush();\n    }\n  }\n\n  /**\n   * Flush write buffers.\n   *\n   * @api private\n   */\n  flush() {\n    if (\n      \"closed\" !== this.readyState &&\n      this.transport.writable &&\n      !this.upgrading &&\n      this.writeBuffer.length\n    ) {\n\n\n      this.transport.send(this.writeBuffer);\n      // keep track of current length of writeBuffer\n      // splice writeBuffer and callbackBuffer on `drain`\n      this.prevBufferLen = this.writeBuffer.length;\n      this.emit(\"flush\");\n    }\n  }\n\n  /**\n   * Sends a message.\n   *\n   * @param {String} message.\n   * @param {Function} callback function.\n   * @param {Object} options.\n   * @return {Socket} for chaining.\n   * @api public\n   */\n  write(msg, options, fn) {\n    this.sendPacket(\"message\", msg, options, fn);\n    return this;\n  }\n\n  send(msg, options, fn) {\n    this.sendPacket(\"message\", msg, options, fn);\n    return this;\n  }\n\n  /**\n   * Sends a packet.\n   *\n   * @param {String} packet type.\n   * @param {String} data.\n   * @param {Object} options.\n   * @param {Function} callback function.\n   * @api private\n   */\n  sendPacket(type, data, options, fn) {\n    if (\"function\" === typeof data) {\n      fn = data;\n      data = undefined;\n    }\n\n    if (\"function\" === typeof options) {\n      fn = options;\n      options = null;\n    }\n\n    if (\"closing\" === this.readyState || \"closed\" === this.readyState) {\n      return;\n    }\n\n    options = options || {};\n    options.compress = false !== options.compress;\n\n    const packet = {\n      type: type,\n      data: data,\n      options: options\n    };\n    this.emit(\"packetCreate\", packet);\n    this.writeBuffer.push(packet);\n    if (fn) this.once(\"flush\", fn);\n    this.flush();\n  }\n\n  /**\n   * Closes the connection.\n   *\n   * @api private\n   */\n  close() {\n    const self = this;\n\n    if (\"opening\" === this.readyState || \"open\" === this.readyState) {\n      this.readyState = \"closing\";\n\n      if (this.writeBuffer.length) {\n        this.once(\"drain\", function() {\n          if (this.upgrading) {\n            waitForUpgrade();\n          } else {\n            close();\n          }\n        });\n      } else if (this.upgrading) {\n        waitForUpgrade();\n      } else {\n        close();\n      }\n    }\n\n    function close() {\n      self.onClose(\"forced close\");\n\n\n      self.transport.close();\n    }\n\n    function cleanupAndClose() {\n      self.removeListener(\"upgrade\", cleanupAndClose);\n      self.removeListener(\"upgradeError\", cleanupAndClose);\n      close();\n    }\n\n    function waitForUpgrade() {\n      // wait for upgrade to finish since we can't send packets while pausing a transport\n      self.once(\"upgrade\", cleanupAndClose);\n      self.once(\"upgradeError\", cleanupAndClose);\n    }\n\n    return this;\n  }\n\n  /**\n   * Called upon transport error\n   *\n   * @api private\n   */\n  onError(err) {\n\n\n    Socket.priorWebsocketSuccess = false;\n    this.emit(\"error\", err);\n    this.onClose(\"transport error\", err);\n  }\n\n  /**\n   * Called upon transport close.\n   *\n   * @api private\n   */\n  onClose(reason, desc) {\n    if (\n      \"opening\" === this.readyState ||\n      \"open\" === this.readyState ||\n      \"closing\" === this.readyState\n    ) {\n\n\n      const self = this;\n\n      // clear timers\n      clearTimeout(this.pingIntervalTimer);\n      clearTimeout(this.pingTimeoutTimer);\n\n      // stop event from firing again for transport\n      this.transport.removeAllListeners(\"close\");\n\n      // ensure transport won't stay open\n      this.transport.close();\n\n      // ignore further transport communication\n      this.transport.removeAllListeners();\n\n      // set ready state\n      this.readyState = \"closed\";\n\n      // clear session id\n      this.id = null;\n\n      // emit close event\n      this.emit(\"close\", reason, desc);\n\n      // clean buffers after, so users can still\n      // grab the buffers on `close` event\n      self.writeBuffer = [];\n      self.prevBufferLen = 0;\n    }\n  }\n\n  /**\n   * Filters upgrades, returning only those matching client transports.\n   *\n   * @param {Array} server upgrades\n   * @api private\n   *\n   */\n  filterUpgrades(upgrades) {\n    const filteredUpgrades = [];\n    let i = 0;\n    const j = upgrades.length;\n    for (; i < j; i++) {\n      if (~this.transports.indexOf(upgrades[i]))\n        filteredUpgrades.push(upgrades[i]);\n    }\n    return filteredUpgrades;\n  }\n}\n\nSocket.priorWebsocketSuccess = false;\n\n/**\n * Protocol version.\n *\n * @api public\n */\n\nSocket.protocol = parser.protocol; // this is an int\n\nfunction clone(obj) {\n  const o = {};\n  for (let i in obj) {\n    if (obj.hasOwnProperty(i)) {\n      o[i] = obj[i];\n    }\n  }\n  return o;\n}\n\nmodule.exports = Socket;\n","\n/**\n * Module exports.\n *\n * Logic borrowed from Modernizr:\n *\n *   - https://github.com/Modernizr/Modernizr/blob/master/feature-detects/cors.js\n */\n\ntry {\n  module.exports = typeof XMLHttpRequest !== 'undefined' &&\n    'withCredentials' in new XMLHttpRequest();\n} catch (err) {\n  // if XMLHttp support is disabled in IE then it will throw\n  // when trying to create\n  module.exports = false;\n}\n","/* global attachEvent */\n\nconst XMLHttpRequest = require(\"xmlhttprequest-ssl\");\nconst Polling = require(\"./polling\");\nconst Emitter = require(\"component-emitter\");\nconst { pick } = require(\"../util\");\nconst globalThis = require(\"../globalThis\");\n\n\n\n\n/**\n * Empty function\n */\n\nfunction empty() {}\n\nconst hasXHR2 = (function() {\n  const xhr = new XMLHttpRequest({ xdomain: false });\n  return null != xhr.responseType;\n})();\n\nclass XHR extends Polling {\n  /**\n   * XHR Polling constructor.\n   *\n   * @param {Object} opts\n   * @api public\n   */\n  constructor(opts) {\n    super(opts);\n\n    if (typeof location !== \"undefined\") {\n      const isSSL = \"https:\" === location.protocol;\n      let port = location.port;\n\n      // some user agents have empty `location.port`\n      if (!port) {\n        port = isSSL ? 443 : 80;\n      }\n\n      this.xd =\n        (typeof location !== \"undefined\" &&\n          opts.hostname !== location.hostname) ||\n        port !== opts.port;\n      this.xs = opts.secure !== isSSL;\n    }\n    /**\n     * XHR supports binary\n     */\n    const forceBase64 = opts && opts.forceBase64;\n    this.supportsBinary = hasXHR2 && !forceBase64;\n  }\n\n  /**\n   * Creates a request.\n   *\n   * @param {String} method\n   * @api private\n   */\n  request(opts = {}) {\n    Object.assign(opts, { xd: this.xd, xs: this.xs }, this.opts);\n    return new Request(this.uri(), opts);\n  }\n\n  /**\n   * Sends data.\n   *\n   * @param {String} data to send.\n   * @param {Function} called upon flush.\n   * @api private\n   */\n  doWrite(data, fn) {\n    const req = this.request({\n      method: \"POST\",\n      data: data\n    });\n    const self = this;\n    req.on(\"success\", fn);\n    req.on(\"error\", function(err) {\n      self.onError(\"xhr post error\", err);\n    });\n  }\n\n  /**\n   * Starts a poll cycle.\n   *\n   * @api private\n   */\n  doPoll() {\n\n\n    const req = this.request();\n    const self = this;\n    req.on(\"data\", function(data) {\n      self.onData(data);\n    });\n    req.on(\"error\", function(err) {\n      self.onError(\"xhr poll error\", err);\n    });\n    this.pollXhr = req;\n  }\n}\n\nclass Request extends Emitter {\n  /**\n   * Request constructor\n   *\n   * @param {Object} options\n   * @api public\n   */\n  constructor(uri, opts) {\n    super();\n    this.opts = opts;\n\n    this.method = opts.method || \"GET\";\n    this.uri = uri;\n    this.async = false !== opts.async;\n    this.data = undefined !== opts.data ? opts.data : null;\n\n    this.create();\n  }\n\n  /**\n   * Creates the XHR object and sends the request.\n   *\n   * @api private\n   */\n  create() {\n    const opts = pick(\n      this.opts,\n      \"agent\",\n      \"enablesXDR\",\n      \"pfx\",\n      \"key\",\n      \"passphrase\",\n      \"cert\",\n      \"ca\",\n      \"ciphers\",\n      \"rejectUnauthorized\"\n    );\n    opts.xdomain = !!this.opts.xd;\n    opts.xscheme = !!this.opts.xs;\n\n    const xhr = (this.xhr = new XMLHttpRequest(opts));\n    const self = this;\n\n    try {\n\n\n      xhr.open(this.method, this.uri, this.async);\n      try {\n        if (this.opts.extraHeaders) {\n          xhr.setDisableHeaderCheck && xhr.setDisableHeaderCheck(true);\n          for (let i in this.opts.extraHeaders) {\n            if (this.opts.extraHeaders.hasOwnProperty(i)) {\n              xhr.setRequestHeader(i, this.opts.extraHeaders[i]);\n            }\n          }\n        }\n      } catch (e) {}\n\n      if (\"POST\" === this.method) {\n        try {\n          xhr.setRequestHeader(\"Content-type\", \"text/plain;charset=UTF-8\");\n        } catch (e) {}\n      }\n\n      try {\n        xhr.setRequestHeader(\"Accept\", \"*/*\");\n      } catch (e) {}\n\n      // ie6 check\n      if (\"withCredentials\" in xhr) {\n        xhr.withCredentials = this.opts.withCredentials;\n      }\n\n      if (this.opts.requestTimeout) {\n        xhr.timeout = this.opts.requestTimeout;\n      }\n\n      if (this.hasXDR()) {\n        xhr.onload = function() {\n          self.onLoad();\n        };\n        xhr.onerror = function() {\n          self.onError(xhr.responseText);\n        };\n      } else {\n        xhr.onreadystatechange = function() {\n          if (4 !== xhr.readyState) return;\n          if (200 === xhr.status || 1223 === xhr.status) {\n            self.onLoad();\n          } else {\n            // make sure the `error` event handler that's user-set\n            // does not throw in the same tick and gets caught here\n            setTimeout(function() {\n              self.onError(typeof xhr.status === \"number\" ? xhr.status : 0);\n            }, 0);\n          }\n        };\n      }\n\n\n\n      xhr.send(this.data);\n    } catch (e) {\n      // Need to defer since .create() is called directly from the constructor\n      // and thus the 'error' event can only be only bound *after* this exception\n      // occurs.  Therefore, also, we cannot throw here at all.\n      setTimeout(function() {\n        self.onError(e);\n      }, 0);\n      return;\n    }\n\n    if (typeof document !== \"undefined\") {\n      this.index = Request.requestsCount++;\n      Request.requests[this.index] = this;\n    }\n  }\n\n  /**\n   * Called upon successful response.\n   *\n   * @api private\n   */\n  onSuccess() {\n    this.emit(\"success\");\n    this.cleanup();\n  }\n\n  /**\n   * Called if we have data.\n   *\n   * @api private\n   */\n  onData(data) {\n    this.emit(\"data\", data);\n    this.onSuccess();\n  }\n\n  /**\n   * Called upon error.\n   *\n   * @api private\n   */\n  onError(err) {\n    this.emit(\"error\", err);\n    this.cleanup(true);\n  }\n\n  /**\n   * Cleans up house.\n   *\n   * @api private\n   */\n  cleanup(fromError) {\n    if (\"undefined\" === typeof this.xhr || null === this.xhr) {\n      return;\n    }\n    // xmlhttprequest\n    if (this.hasXDR()) {\n      this.xhr.onload = this.xhr.onerror = empty;\n    } else {\n      this.xhr.onreadystatechange = empty;\n    }\n\n    if (fromError) {\n      try {\n        this.xhr.abort();\n      } catch (e) {}\n    }\n\n    if (typeof document !== \"undefined\") {\n      delete Request.requests[this.index];\n    }\n\n    this.xhr = null;\n  }\n\n  /**\n   * Called upon load.\n   *\n   * @api private\n   */\n  onLoad() {\n    const data = this.xhr.responseText;\n    if (data !== null) {\n      this.onData(data);\n    }\n  }\n\n  /**\n   * Check if it has XDomainRequest.\n   *\n   * @api private\n   */\n  hasXDR() {\n    return typeof XDomainRequest !== \"undefined\" && !this.xs && this.enablesXDR;\n  }\n\n  /**\n   * Aborts the request.\n   *\n   * @api public\n   */\n  abort() {\n    this.cleanup();\n  }\n}\n\n/**\n * Aborts pending requests when unloading the window. This is needed to prevent\n * memory leaks (e.g. when using IE) and to ensure that no spurious error is\n * emitted.\n */\n\nRequest.requestsCount = 0;\nRequest.requests = {};\n\nif (typeof document !== \"undefined\") {\n  if (typeof attachEvent === \"function\") {\n    attachEvent(\"onunload\", unloadHandler);\n  } else if (typeof addEventListener === \"function\") {\n    const terminationEvent = \"onpagehide\" in globalThis ? \"pagehide\" : \"unload\";\n    addEventListener(terminationEvent, unloadHandler, false);\n  }\n}\n\nfunction unloadHandler() {\n  for (let i in Request.requests) {\n    if (Request.requests.hasOwnProperty(i)) {\n      Request.requests[i].abort();\n    }\n  }\n}\n\nmodule.exports = XHR;\nmodule.exports.Request = Request;\n","const { PACKET_TYPES } = require(\"./commons\");\n\nconst withNativeBlob =\n  typeof Blob === \"function\" ||\n  (typeof Blob !== \"undefined\" &&\n    Object.prototype.toString.call(Blob) === \"[object BlobConstructor]\");\nconst withNativeArrayBuffer = typeof ArrayBuffer === \"function\";\n\n// ArrayBuffer.isView method is not defined in IE10\nconst isView = obj => {\n  return typeof ArrayBuffer.isView === \"function\"\n    ? ArrayBuffer.isView(obj)\n    : obj && obj.buffer instanceof ArrayBuffer;\n};\n\nconst encodePacket = ({ type, data }, supportsBinary, callback) => {\n  if (withNativeBlob && data instanceof Blob) {\n    if (supportsBinary) {\n      return callback(data);\n    } else {\n      return encodeBlobAsBase64(data, callback);\n    }\n  } else if (\n    withNativeArrayBuffer &&\n    (data instanceof ArrayBuffer || isView(data))\n  ) {\n    if (supportsBinary) {\n      return callback(data instanceof ArrayBuffer ? data : data.buffer);\n    } else {\n      return encodeBlobAsBase64(new Blob([data]), callback);\n    }\n  }\n  // plain string\n  return callback(PACKET_TYPES[type] + (data || \"\"));\n};\n\nconst encodeBlobAsBase64 = (data, callback) => {\n  const fileReader = new FileReader();\n  fileReader.onload = function() {\n    const content = fileReader.result.split(\",\")[1];\n    callback(\"b\" + content);\n  };\n  return fileReader.readAsDataURL(data);\n};\n\nmodule.exports = encodePacket;\n","const { PACKET_TYPES_REVERSE, ERROR_PACKET } = require(\"./commons\");\n\nconst withNativeArrayBuffer = typeof ArrayBuffer === \"function\";\n\nlet base64decoder;\nif (withNativeArrayBuffer) {\n  base64decoder = require(\"base64-arraybuffer\");\n}\n\nconst decodePacket = (encodedPacket, binaryType) => {\n  if (typeof encodedPacket !== \"string\") {\n    return {\n      type: \"message\",\n      data: mapBinary(encodedPacket, binaryType)\n    };\n  }\n  const type = encodedPacket.charAt(0);\n  if (type === \"b\") {\n    return {\n      type: \"message\",\n      data: decodeBase64Packet(encodedPacket.substring(1), binaryType)\n    };\n  }\n  const packetType = PACKET_TYPES_REVERSE[type];\n  if (!packetType) {\n    return ERROR_PACKET;\n  }\n  return encodedPacket.length > 1\n    ? {\n        type: PACKET_TYPES_REVERSE[type],\n        data: encodedPacket.substring(1)\n      }\n    : {\n        type: PACKET_TYPES_REVERSE[type]\n      };\n};\n\nconst decodeBase64Packet = (data, binaryType) => {\n  if (base64decoder) {\n    const decoded = base64decoder.decode(data);\n    return mapBinary(decoded, binaryType);\n  } else {\n    return { base64: true, data }; // fallback for old browsers\n  }\n};\n\nconst mapBinary = (data, binaryType) => {\n  switch (binaryType) {\n    case \"blob\":\n      return data instanceof ArrayBuffer ? new Blob([data]) : data;\n    case \"arraybuffer\":\n    default:\n      return data; // assuming the data is already an ArrayBuffer\n  }\n};\n\nmodule.exports = decodePacket;\n","/*\n * base64-arraybuffer\n * https://github.com/niklasvh/base64-arraybuffer\n *\n * Copyright (c) 2012 Niklas von Hertzen\n * Licensed under the MIT license.\n */\n(function(chars){\n  \"use strict\";\n\n  exports.encode = function(arraybuffer) {\n    var bytes = new Uint8Array(arraybuffer),\n    i, len = bytes.length, base64 = \"\";\n\n    for (i = 0; i < len; i+=3) {\n      base64 += chars[bytes[i] >> 2];\n      base64 += chars[((bytes[i] & 3) << 4) | (bytes[i + 1] >> 4)];\n      base64 += chars[((bytes[i + 1] & 15) << 2) | (bytes[i + 2] >> 6)];\n      base64 += chars[bytes[i + 2] & 63];\n    }\n\n    if ((len % 3) === 2) {\n      base64 = base64.substring(0, base64.length - 1) + \"=\";\n    } else if (len % 3 === 1) {\n      base64 = base64.substring(0, base64.length - 2) + \"==\";\n    }\n\n    return base64;\n  };\n\n  exports.decode =  function(base64) {\n    var bufferLength = base64.length * 0.75,\n    len = base64.length, i, p = 0,\n    encoded1, encoded2, encoded3, encoded4;\n\n    if (base64[base64.length - 1] === \"=\") {\n      bufferLength--;\n      if (base64[base64.length - 2] === \"=\") {\n        bufferLength--;\n      }\n    }\n\n    var arraybuffer = new ArrayBuffer(bufferLength),\n    bytes = new Uint8Array(arraybuffer);\n\n    for (i = 0; i < len; i+=4) {\n      encoded1 = chars.indexOf(base64[i]);\n      encoded2 = chars.indexOf(base64[i+1]);\n      encoded3 = chars.indexOf(base64[i+2]);\n      encoded4 = chars.indexOf(base64[i+3]);\n\n      bytes[p++] = (encoded1 << 2) | (encoded2 >> 4);\n      bytes[p++] = ((encoded2 & 15) << 4) | (encoded3 >> 2);\n      bytes[p++] = ((encoded3 & 3) << 6) | (encoded4 & 63);\n    }\n\n    return arraybuffer;\n  };\n})(\"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/\");\n","const Polling = require(\"./polling\");\nconst globalThis = require(\"../globalThis\");\n\nconst rNewline = /\\n/g;\nconst rEscapedNewline = /\\\\n/g;\n\n/**\n * Global JSONP callbacks.\n */\n\nlet callbacks;\n\nclass JSONPPolling extends Polling {\n  /**\n   * JSONP Polling constructor.\n   *\n   * @param {Object} opts.\n   * @api public\n   */\n  constructor(opts) {\n    super(opts);\n\n    this.query = this.query || {};\n\n    // define global callbacks array if not present\n    // we do this here (lazily) to avoid unneeded global pollution\n    if (!callbacks) {\n      // we need to consider multiple engines in the same page\n      callbacks = globalThis.___eio = globalThis.___eio || [];\n    }\n\n    // callback identifier\n    this.index = callbacks.length;\n\n    // add callback to jsonp global\n    const self = this;\n    callbacks.push(function(msg) {\n      self.onData(msg);\n    });\n\n    // append to query string\n    this.query.j = this.index;\n  }\n\n  /**\n   * JSONP only supports binary as base64 encoded strings\n   */\n  get supportsBinary() {\n    return false;\n  }\n\n  /**\n   * Closes the socket.\n   *\n   * @api private\n   */\n  doClose() {\n    if (this.script) {\n      // prevent spurious errors from being emitted when the window is unloaded\n      this.script.onerror = () => {};\n      this.script.parentNode.removeChild(this.script);\n      this.script = null;\n    }\n\n    if (this.form) {\n      this.form.parentNode.removeChild(this.form);\n      this.form = null;\n      this.iframe = null;\n    }\n\n    super.doClose();\n  }\n\n  /**\n   * Starts a poll cycle.\n   *\n   * @api private\n   */\n  doPoll() {\n    const self = this;\n    const script = document.createElement(\"script\");\n\n    if (this.script) {\n      this.script.parentNode.removeChild(this.script);\n      this.script = null;\n    }\n\n    script.async = true;\n    script.src = this.uri();\n    script.onerror = function(e) {\n      self.onError(\"jsonp poll error\", e);\n    };\n\n    const insertAt = document.getElementsByTagName(\"script\")[0];\n    if (insertAt) {\n      insertAt.parentNode.insertBefore(script, insertAt);\n    } else {\n      (document.head || document.body).appendChild(script);\n    }\n    this.script = script;\n\n    const isUAgecko =\n      \"undefined\" !== typeof navigator && /gecko/i.test(navigator.userAgent);\n\n    if (isUAgecko) {\n      setTimeout(function() {\n        const iframe = document.createElement(\"iframe\");\n        document.body.appendChild(iframe);\n        document.body.removeChild(iframe);\n      }, 100);\n    }\n  }\n\n  /**\n   * Writes with a hidden iframe.\n   *\n   * @param {String} data to send\n   * @param {Function} called upon flush.\n   * @api private\n   */\n  doWrite(data, fn) {\n    const self = this;\n    let iframe;\n\n    if (!this.form) {\n      const form = document.createElement(\"form\");\n      const area = document.createElement(\"textarea\");\n      const id = (this.iframeId = \"eio_iframe_\" + this.index);\n\n      form.className = \"socketio\";\n      form.style.position = \"absolute\";\n      form.style.top = \"-1000px\";\n      form.style.left = \"-1000px\";\n      form.target = id;\n      form.method = \"POST\";\n      form.setAttribute(\"accept-charset\", \"utf-8\");\n      area.name = \"d\";\n      form.appendChild(area);\n      document.body.appendChild(form);\n\n      this.form = form;\n      this.area = area;\n    }\n\n    this.form.action = this.uri();\n\n    function complete() {\n      initIframe();\n      fn();\n    }\n\n    function initIframe() {\n      if (self.iframe) {\n        try {\n          self.form.removeChild(self.iframe);\n        } catch (e) {\n          self.onError(\"jsonp polling iframe removal error\", e);\n        }\n      }\n\n      try {\n        // ie6 dynamic iframes with target=\"\" support (thanks Chris Lambacher)\n        const html = '<iframe src=\"javascript:0\" name=\"' + self.iframeId + '\">';\n        iframe = document.createElement(html);\n      } catch (e) {\n        iframe = document.createElement(\"iframe\");\n        iframe.name = self.iframeId;\n        iframe.src = \"javascript:0\";\n      }\n\n      iframe.id = self.iframeId;\n\n      self.form.appendChild(iframe);\n      self.iframe = iframe;\n    }\n\n    initIframe();\n\n    // escape \\n to prevent it from being converted into \\r\\n by some UAs\n    // double escaping is required for escaped new lines because unescaping of new lines can be done safely on server-side\n    data = data.replace(rEscapedNewline, \"\\\\\\n\");\n    this.area.value = data.replace(rNewline, \"\\\\n\");\n\n    try {\n      this.form.submit();\n    } catch (e) {}\n\n    if (this.iframe.attachEvent) {\n      this.iframe.onreadystatechange = function() {\n        if (self.iframe.readyState === \"complete\") {\n          complete();\n        }\n      };\n    } else {\n      this.iframe.onload = complete;\n    }\n  }\n}\n\nmodule.exports = JSONPPolling;\n","const Transport = require(\"../transport\");\nconst parser = require(\"engine.io-parser\");\nconst parseqs = require(\"parseqs\");\nconst yeast = require(\"yeast\");\nconst { pick } = require(\"../util\");\nconst {\n  WebSocket,\n  usingBrowserWebSocket,\n  defaultBinaryType\n} = require(\"./websocket-constructor\");\n\n\n\n\n// detect ReactNative environment\nconst isReactNative =\n  typeof navigator !== \"undefined\" &&\n  typeof navigator.product === \"string\" &&\n  navigator.product.toLowerCase() === \"reactnative\";\n\nclass WS extends Transport {\n  /**\n   * WebSocket transport constructor.\n   *\n   * @api {Object} connection options\n   * @api public\n   */\n  constructor(opts) {\n    super(opts);\n\n    this.supportsBinary = !opts.forceBase64;\n  }\n\n  /**\n   * Transport name.\n   *\n   * @api public\n   */\n  get name() {\n    return \"websocket\";\n  }\n\n  /**\n   * Opens socket.\n   *\n   * @api private\n   */\n  doOpen() {\n    if (!this.check()) {\n      // let probe timeout\n      return;\n    }\n\n    const uri = this.uri();\n    const protocols = this.opts.protocols;\n\n    // React Native only supports the 'headers' option, and will print a warning if anything else is passed\n    const opts = isReactNative\n      ? {}\n      : pick(\n          this.opts,\n          \"agent\",\n          \"perMessageDeflate\",\n          \"pfx\",\n          \"key\",\n          \"passphrase\",\n          \"cert\",\n          \"ca\",\n          \"ciphers\",\n          \"rejectUnauthorized\",\n          \"localAddress\",\n          \"protocolVersion\",\n          \"origin\",\n          \"maxPayload\",\n          \"family\",\n          \"checkServerIdentity\"\n        );\n\n    if (this.opts.extraHeaders) {\n      opts.headers = this.opts.extraHeaders;\n    }\n\n    try {\n      this.ws =\n        usingBrowserWebSocket && !isReactNative\n          ? protocols\n            ? new WebSocket(uri, protocols)\n            : new WebSocket(uri)\n          : new WebSocket(uri, protocols, opts);\n    } catch (err) {\n      return this.emit(\"error\", err);\n    }\n\n    this.ws.binaryType = this.socket.binaryType || defaultBinaryType;\n\n    this.addEventListeners();\n  }\n\n  /**\n   * Adds event listeners to the socket\n   *\n   * @api private\n   */\n  addEventListeners() {\n    const self = this;\n\n    this.ws.onopen = function() {\n      self.onOpen();\n    };\n    this.ws.onclose = function() {\n      self.onClose();\n    };\n    this.ws.onmessage = function(ev) {\n      self.onData(ev.data);\n    };\n    this.ws.onerror = function(e) {\n      self.onError(\"websocket error\", e);\n    };\n  }\n\n  /**\n   * Writes data to socket.\n   *\n   * @param {Array} array of packets.\n   * @api private\n   */\n  write(packets) {\n    const self = this;\n    this.writable = false;\n\n    // encodePacket efficient as it uses WS framing\n    // no need for encodePayload\n    let total = packets.length;\n    let i = 0;\n    const l = total;\n    for (; i < l; i++) {\n      (function(packet) {\n        parser.encodePacket(packet, self.supportsBinary, function(data) {\n          // always create a new object (GH-437)\n          const opts = {};\n          if (!usingBrowserWebSocket) {\n            if (packet.options) {\n              opts.compress = packet.options.compress;\n            }\n\n            if (self.opts.perMessageDeflate) {\n              const len =\n                \"string\" === typeof data\n                  ? Buffer.byteLength(data)\n                  : data.length;\n              if (len < self.opts.perMessageDeflate.threshold) {\n                opts.compress = false;\n              }\n            }\n          }\n\n          // Sometimes the websocket has already been closed but the browser didn't\n          // have a chance of informing us about it yet, in that case send will\n          // throw an error\n          try {\n            if (usingBrowserWebSocket) {\n              // TypeError is thrown when passing the second argument on Safari\n              self.ws.send(data);\n            } else {\n              self.ws.send(data, opts);\n            }\n          } catch (e) {\n\n\n          }\n\n          --total || done();\n        });\n      })(packets[i]);\n    }\n\n    function done() {\n      self.emit(\"flush\");\n\n      // fake drain\n      // defer to next tick to allow Socket to clear writeBuffer\n      setTimeout(function() {\n        self.writable = true;\n        self.emit(\"drain\");\n      }, 0);\n    }\n  }\n\n  /**\n   * Called upon close\n   *\n   * @api private\n   */\n  onClose() {\n    Transport.prototype.onClose.call(this);\n  }\n\n  /**\n   * Closes socket.\n   *\n   * @api private\n   */\n  doClose() {\n    if (typeof this.ws !== \"undefined\") {\n      this.ws.close();\n      this.ws = null;\n    }\n  }\n\n  /**\n   * Generates uri for connection.\n   *\n   * @api private\n   */\n  uri() {\n    let query = this.query || {};\n    const schema = this.opts.secure ? \"wss\" : \"ws\";\n    let port = \"\";\n\n    // avoid port if default for schema\n    if (\n      this.opts.port &&\n      ((\"wss\" === schema && Number(this.opts.port) !== 443) ||\n        (\"ws\" === schema && Number(this.opts.port) !== 80))\n    ) {\n      port = \":\" + this.opts.port;\n    }\n\n    // append timestamp to URI\n    if (this.opts.timestampRequests) {\n      query[this.opts.timestampParam] = yeast();\n    }\n\n    // communicate binary support capabilities\n    if (!this.supportsBinary) {\n      query.b64 = 1;\n    }\n\n    query = parseqs.encode(query);\n\n    // prepend ? to query\n    if (query.length) {\n      query = \"?\" + query;\n    }\n\n    const ipv6 = this.opts.hostname.indexOf(\":\") !== -1;\n    return (\n      schema +\n      \"://\" +\n      (ipv6 ? \"[\" + this.opts.hostname + \"]\" : this.opts.hostname) +\n      port +\n      this.opts.path +\n      query\n    );\n  }\n\n  /**\n   * Feature detection for WebSocket.\n   *\n   * @return {Boolean} whether this transport is available.\n   * @api public\n   */\n  check() {\n    return (\n      !!WebSocket &&\n      !(\"__initialize\" in WebSocket && this.name === WS.prototype.name)\n    );\n  }\n}\n\nmodule.exports = WS;\n","const globalThis = require(\"../globalThis\");\n\nmodule.exports = {\n  WebSocket: globalThis.WebSocket || globalThis.MozWebSocket,\n  usingBrowserWebSocket: true,\n  defaultBinaryType: \"arraybuffer\"\n};\n","exports.encode = require('./encode');\nexports.decode = require('./decode');\n","'use strict';\n\nfunction utf8Write(view, offset, str) {\n  var c = 0;\n  for (var i = 0, l = str.length; i < l; i++) {\n    c = str.charCodeAt(i);\n    if (c < 0x80) {\n      view.setUint8(offset++, c);\n    }\n    else if (c < 0x800) {\n      view.setUint8(offset++, 0xc0 | (c >> 6));\n      view.setUint8(offset++, 0x80 | (c & 0x3f));\n    }\n    else if (c < 0xd800 || c >= 0xe000) {\n      view.setUint8(offset++, 0xe0 | (c >> 12));\n      view.setUint8(offset++, 0x80 | (c >> 6) & 0x3f);\n      view.setUint8(offset++, 0x80 | (c & 0x3f));\n    }\n    else {\n      i++;\n      c = 0x10000 + (((c & 0x3ff) << 10) | (str.charCodeAt(i) & 0x3ff));\n      view.setUint8(offset++, 0xf0 | (c >> 18));\n      view.setUint8(offset++, 0x80 | (c >> 12) & 0x3f);\n      view.setUint8(offset++, 0x80 | (c >> 6) & 0x3f);\n      view.setUint8(offset++, 0x80 | (c & 0x3f));\n    }\n  }\n}\n\nfunction utf8Length(str) {\n  var c = 0, length = 0;\n  for (var i = 0, l = str.length; i < l; i++) {\n    c = str.charCodeAt(i);\n    if (c < 0x80) {\n      length += 1;\n    }\n    else if (c < 0x800) {\n      length += 2;\n    }\n    else if (c < 0xd800 || c >= 0xe000) {\n      length += 3;\n    }\n    else {\n      i++;\n      length += 4;\n    }\n  }\n  return length;\n}\n\nfunction _encode(bytes, defers, value) {\n  var type = typeof value, i = 0, l = 0, hi = 0, lo = 0, length = 0, size = 0;\n\n  if (type === 'string') {\n    length = utf8Length(value);\n\n    // fixstr\n    if (length < 0x20) {\n      bytes.push(length | 0xa0);\n      size = 1;\n    }\n    // str 8\n    else if (length < 0x100) {\n      bytes.push(0xd9, length);\n      size = 2;\n    }\n    // str 16\n    else if (length < 0x10000) {\n      bytes.push(0xda, length >> 8, length);\n      size = 3;\n    }\n    // str 32\n    else if (length < 0x100000000) {\n      bytes.push(0xdb, length >> 24, length >> 16, length >> 8, length);\n      size = 5;\n    } else {\n      throw new Error('String too long');\n    }\n    defers.push({ _str: value, _length: length, _offset: bytes.length });\n    return size + length;\n  }\n  if (type === 'number') {\n    // TODO: encode to float 32?\n\n    // float 64\n    if (Math.floor(value) !== value || !isFinite(value)) {\n      bytes.push(0xcb);\n      defers.push({ _float: value, _length: 8, _offset: bytes.length });\n      return 9;\n    }\n\n    if (value >= 0) {\n      // positive fixnum\n      if (value < 0x80) {\n        bytes.push(value);\n        return 1;\n      }\n      // uint 8\n      if (value < 0x100) {\n        bytes.push(0xcc, value);\n        return 2;\n      }\n      // uint 16\n      if (value < 0x10000) {\n        bytes.push(0xcd, value >> 8, value);\n        return 3;\n      }\n      // uint 32\n      if (value < 0x100000000) {\n        bytes.push(0xce, value >> 24, value >> 16, value >> 8, value);\n        return 5;\n      }\n      // uint 64\n      hi = (value / Math.pow(2, 32)) >> 0;\n      lo = value >>> 0;\n      bytes.push(0xcf, hi >> 24, hi >> 16, hi >> 8, hi, lo >> 24, lo >> 16, lo >> 8, lo);\n      return 9;\n    } else {\n      // negative fixnum\n      if (value >= -0x20) {\n        bytes.push(value);\n        return 1;\n      }\n      // int 8\n      if (value >= -0x80) {\n        bytes.push(0xd0, value);\n        return 2;\n      }\n      // int 16\n      if (value >= -0x8000) {\n        bytes.push(0xd1, value >> 8, value);\n        return 3;\n      }\n      // int 32\n      if (value >= -0x80000000) {\n        bytes.push(0xd2, value >> 24, value >> 16, value >> 8, value);\n        return 5;\n      }\n      // int 64\n      hi = Math.floor(value / Math.pow(2, 32));\n      lo = value >>> 0;\n      bytes.push(0xd3, hi >> 24, hi >> 16, hi >> 8, hi, lo >> 24, lo >> 16, lo >> 8, lo);\n      return 9;\n    }\n  }\n  if (type === 'object') {\n    // nil\n    if (value === null) {\n      bytes.push(0xc0);\n      return 1;\n    }\n\n    if (Array.isArray(value)) {\n      length = value.length;\n\n      // fixarray\n      if (length < 0x10) {\n        bytes.push(length | 0x90);\n        size = 1;\n      }\n      // array 16\n      else if (length < 0x10000) {\n        bytes.push(0xdc, length >> 8, length);\n        size = 3;\n      }\n      // array 32\n      else if (length < 0x100000000) {\n        bytes.push(0xdd, length >> 24, length >> 16, length >> 8, length);\n        size = 5;\n      } else {\n        throw new Error('Array too large');\n      }\n      for (i = 0; i < length; i++) {\n        size += _encode(bytes, defers, value[i]);\n      }\n      return size;\n    }\n\n    // fixext 8 / Date\n    if (value instanceof Date) {\n      var time = value.getTime();\n      hi = Math.floor(time / Math.pow(2, 32));\n      lo = time >>> 0;\n      bytes.push(0xd7, 0, hi >> 24, hi >> 16, hi >> 8, hi, lo >> 24, lo >> 16, lo >> 8, lo);\n      return 10;\n    }\n\n    if (value instanceof ArrayBuffer) {\n      length = value.byteLength;\n\n      // bin 8\n      if (length < 0x100) {\n        bytes.push(0xc4, length);\n        size = 2;\n      } else\n      // bin 16\n      if (length < 0x10000) {\n        bytes.push(0xc5, length >> 8, length);\n        size = 3;\n      } else\n      // bin 32\n      if (length < 0x100000000) {\n        bytes.push(0xc6, length >> 24, length >> 16, length >> 8, length);\n        size = 5;\n      } else {\n        throw new Error('Buffer too large');\n      }\n      defers.push({ _bin: value, _length: length, _offset: bytes.length });\n      return size + length;\n    }\n\n    if (typeof value.toJSON === 'function') {\n      return _encode(bytes, defers, value.toJSON());\n    }\n\n    var keys = [], key = '';\n\n    var allKeys = Object.keys(value);\n    for (i = 0, l = allKeys.length; i < l; i++) {\n      key = allKeys[i];\n      if (typeof value[key] !== 'function') {\n        keys.push(key);\n      }\n    }\n    length = keys.length;\n\n    // fixmap\n    if (length < 0x10) {\n      bytes.push(length | 0x80);\n      size = 1;\n    }\n    // map 16\n    else if (length < 0x10000) {\n      bytes.push(0xde, length >> 8, length);\n      size = 3;\n    }\n    // map 32\n    else if (length < 0x100000000) {\n      bytes.push(0xdf, length >> 24, length >> 16, length >> 8, length);\n      size = 5;\n    } else {\n      throw new Error('Object too large');\n    }\n\n    for (i = 0; i < length; i++) {\n      key = keys[i];\n      size += _encode(bytes, defers, key);\n      size += _encode(bytes, defers, value[key]);\n    }\n    return size;\n  }\n  // false/true\n  if (type === 'boolean') {\n    bytes.push(value ? 0xc3 : 0xc2);\n    return 1;\n  }\n  // fixext 1 / undefined\n  if (type === 'undefined') {\n    bytes.push(0xd4, 0, 0);\n    return 3;\n  }\n  throw new Error('Could not encode');\n}\n\nfunction encode(value) {\n  var bytes = [];\n  var defers = [];\n  var size = _encode(bytes, defers, value);\n  var buf = new ArrayBuffer(size);\n  var view = new DataView(buf);\n\n  var deferIndex = 0;\n  var deferWritten = 0;\n  var nextOffset = -1;\n  if (defers.length > 0) {\n    nextOffset = defers[0]._offset;\n  }\n\n  var defer, deferLength = 0, offset = 0;\n  for (var i = 0, l = bytes.length; i < l; i++) {\n    view.setUint8(deferWritten + i, bytes[i]);\n    if (i + 1 !== nextOffset) { continue; }\n    defer = defers[deferIndex];\n    deferLength = defer._length;\n    offset = deferWritten + nextOffset;\n    if (defer._bin) {\n      var bin = new Uint8Array(defer._bin);\n      for (var j = 0; j < deferLength; j++) {\n        view.setUint8(offset + j, bin[j]);\n      }\n    } else if (defer._str) {\n      utf8Write(view, offset, defer._str);\n    } else if (defer._float !== undefined) {\n      view.setFloat64(offset, defer._float);\n    }\n    deferIndex++;\n    deferWritten += deferLength;\n    if (defers[deferIndex]) {\n      nextOffset = defers[deferIndex]._offset;\n    }\n  }\n  return buf;\n}\n\nmodule.exports = encode;\n","'use strict';\n\nfunction Decoder(buffer) {\n  this._offset = 0;\n  if (buffer instanceof ArrayBuffer) {\n    this._buffer = buffer;\n    this._view = new DataView(this._buffer);\n  } else if (ArrayBuffer.isView(buffer)) {\n    this._buffer = buffer.buffer;\n    this._view = new DataView(this._buffer, buffer.byteOffset, buffer.byteLength);\n  } else {\n    throw new Error('Invalid argument');\n  }\n}\n\nfunction utf8Read(view, offset, length) {\n  var string = '', chr = 0;\n  for (var i = offset, end = offset + length; i < end; i++) {\n    var byte = view.getUint8(i);\n    if ((byte & 0x80) === 0x00) {\n      string += String.fromCharCode(byte);\n      continue;\n    }\n    if ((byte & 0xe0) === 0xc0) {\n      string += String.fromCharCode(\n        ((byte & 0x1f) << 6) |\n        (view.getUint8(++i) & 0x3f)\n      );\n      continue;\n    }\n    if ((byte & 0xf0) === 0xe0) {\n      string += String.fromCharCode(\n        ((byte & 0x0f) << 12) |\n        ((view.getUint8(++i) & 0x3f) << 6) |\n        ((view.getUint8(++i) & 0x3f) << 0)\n      );\n      continue;\n    }\n    if ((byte & 0xf8) === 0xf0) {\n      chr = ((byte & 0x07) << 18) |\n        ((view.getUint8(++i) & 0x3f) << 12) |\n        ((view.getUint8(++i) & 0x3f) << 6) |\n        ((view.getUint8(++i) & 0x3f) << 0);\n      if (chr >= 0x010000) { // surrogate pair\n        chr -= 0x010000;\n        string += String.fromCharCode((chr >>> 10) + 0xD800, (chr & 0x3FF) + 0xDC00);\n      } else {\n        string += String.fromCharCode(chr);\n      }\n      continue;\n    }\n    throw new Error('Invalid byte ' + byte.toString(16));\n  }\n  return string;\n}\n\nDecoder.prototype._array = function (length) {\n  var value = new Array(length);\n  for (var i = 0; i < length; i++) {\n    value[i] = this._parse();\n  }\n  return value;\n};\n\nDecoder.prototype._map = function (length) {\n  var key = '', value = {};\n  for (var i = 0; i < length; i++) {\n    key = this._parse();\n    value[key] = this._parse();\n  }\n  return value;\n};\n\nDecoder.prototype._str = function (length) {\n  var value = utf8Read(this._view, this._offset, length);\n  this._offset += length;\n  return value;\n};\n\nDecoder.prototype._bin = function (length) {\n  var value = this._buffer.slice(this._offset, this._offset + length);\n  this._offset += length;\n  return value;\n};\n\nDecoder.prototype._parse = function () {\n  var prefix = this._view.getUint8(this._offset++);\n  var value, length = 0, type = 0, hi = 0, lo = 0;\n\n  if (prefix < 0xc0) {\n    // positive fixint\n    if (prefix < 0x80) {\n      return prefix;\n    }\n    // fixmap\n    if (prefix < 0x90) {\n      return this._map(prefix & 0x0f);\n    }\n    // fixarray\n    if (prefix < 0xa0) {\n      return this._array(prefix & 0x0f);\n    }\n    // fixstr\n    return this._str(prefix & 0x1f);\n  }\n\n  // negative fixint\n  if (prefix > 0xdf) {\n    return (0xff - prefix + 1) * -1;\n  }\n\n  switch (prefix) {\n    // nil\n    case 0xc0:\n      return null;\n    // false\n    case 0xc2:\n      return false;\n    // true\n    case 0xc3:\n      return true;\n\n    // bin\n    case 0xc4:\n      length = this._view.getUint8(this._offset);\n      this._offset += 1;\n      return this._bin(length);\n    case 0xc5:\n      length = this._view.getUint16(this._offset);\n      this._offset += 2;\n      return this._bin(length);\n    case 0xc6:\n      length = this._view.getUint32(this._offset);\n      this._offset += 4;\n      return this._bin(length);\n\n    // ext\n    case 0xc7:\n      length = this._view.getUint8(this._offset);\n      type = this._view.getInt8(this._offset + 1);\n      this._offset += 2;\n      return [type, this._bin(length)];\n    case 0xc8:\n      length = this._view.getUint16(this._offset);\n      type = this._view.getInt8(this._offset + 2);\n      this._offset += 3;\n      return [type, this._bin(length)];\n    case 0xc9:\n      length = this._view.getUint32(this._offset);\n      type = this._view.getInt8(this._offset + 4);\n      this._offset += 5;\n      return [type, this._bin(length)];\n\n    // float\n    case 0xca:\n      value = this._view.getFloat32(this._offset);\n      this._offset += 4;\n      return value;\n    case 0xcb:\n      value = this._view.getFloat64(this._offset);\n      this._offset += 8;\n      return value;\n\n    // uint\n    case 0xcc:\n      value = this._view.getUint8(this._offset);\n      this._offset += 1;\n      return value;\n    case 0xcd:\n      value = this._view.getUint16(this._offset);\n      this._offset += 2;\n      return value;\n    case 0xce:\n      value = this._view.getUint32(this._offset);\n      this._offset += 4;\n      return value;\n    case 0xcf:\n      hi = this._view.getUint32(this._offset) * Math.pow(2, 32);\n      lo = this._view.getUint32(this._offset + 4);\n      this._offset += 8;\n      return hi + lo;\n\n    // int\n    case 0xd0:\n      value = this._view.getInt8(this._offset);\n      this._offset += 1;\n      return value;\n    case 0xd1:\n      value = this._view.getInt16(this._offset);\n      this._offset += 2;\n      return value;\n    case 0xd2:\n      value = this._view.getInt32(this._offset);\n      this._offset += 4;\n      return value;\n    case 0xd3:\n      hi = this._view.getInt32(this._offset) * Math.pow(2, 32);\n      lo = this._view.getUint32(this._offset + 4);\n      this._offset += 8;\n      return hi + lo;\n\n    // fixext\n    case 0xd4:\n      type = this._view.getInt8(this._offset);\n      this._offset += 1;\n      if (type === 0x00) {\n        this._offset += 1;\n        return void 0;\n      }\n      return [type, this._bin(1)];\n    case 0xd5:\n      type = this._view.getInt8(this._offset);\n      this._offset += 1;\n      return [type, this._bin(2)];\n    case 0xd6:\n      type = this._view.getInt8(this._offset);\n      this._offset += 1;\n      return [type, this._bin(4)];\n    case 0xd7:\n      type = this._view.getInt8(this._offset);\n      this._offset += 1;\n      if (type === 0x00) {\n        hi = this._view.getInt32(this._offset) * Math.pow(2, 32);\n        lo = this._view.getUint32(this._offset + 4);\n        this._offset += 8;\n        return new Date(hi + lo);\n      }\n      return [type, this._bin(8)];\n    case 0xd8:\n      type = this._view.getInt8(this._offset);\n      this._offset += 1;\n      return [type, this._bin(16)];\n\n    // str\n    case 0xd9:\n      length = this._view.getUint8(this._offset);\n      this._offset += 1;\n      return this._str(length);\n    case 0xda:\n      length = this._view.getUint16(this._offset);\n      this._offset += 2;\n      return this._str(length);\n    case 0xdb:\n      length = this._view.getUint32(this._offset);\n      this._offset += 4;\n      return this._str(length);\n\n    // array\n    case 0xdc:\n      length = this._view.getUint16(this._offset);\n      this._offset += 2;\n      return this._array(length);\n    case 0xdd:\n      length = this._view.getUint32(this._offset);\n      this._offset += 4;\n      return this._array(length);\n\n    // map\n    case 0xde:\n      length = this._view.getUint16(this._offset);\n      this._offset += 2;\n      return this._map(length);\n    case 0xdf:\n      length = this._view.getUint32(this._offset);\n      this._offset += 4;\n      return this._map(length);\n  }\n\n  throw new Error('Could not parse');\n};\n\nfunction decode(buffer) {\n  var decoder = new Decoder(buffer);\n  var value = decoder._parse();\n  if (decoder._offset !== buffer.byteLength) {\n    throw new Error((buffer.byteLength - decoder._offset) + ' trailing bytes');\n  }\n  return value;\n}\n\nmodule.exports = decode;\n","\n/**\n * Expose `Backoff`.\n */\n\nmodule.exports = Backoff;\n\n/**\n * Initialize backoff timer with `opts`.\n *\n * - `min` initial timeout in milliseconds [100]\n * - `max` max timeout [10000]\n * - `jitter` [0]\n * - `factor` [2]\n *\n * @param {Object} opts\n * @api public\n */\n\nfunction Backoff(opts) {\n  opts = opts || {};\n  this.ms = opts.min || 100;\n  this.max = opts.max || 10000;\n  this.factor = opts.factor || 2;\n  this.jitter = opts.jitter > 0 && opts.jitter <= 1 ? opts.jitter : 0;\n  this.attempts = 0;\n}\n\n/**\n * Return the backoff duration.\n *\n * @return {Number}\n * @api public\n */\n\nBackoff.prototype.duration = function(){\n  var ms = this.ms * Math.pow(this.factor, this.attempts++);\n  if (this.jitter) {\n    var rand =  Math.random();\n    var deviation = Math.floor(rand * this.jitter * ms);\n    ms = (Math.floor(rand * 10) & 1) == 0  ? ms - deviation : ms + deviation;\n  }\n  return Math.min(ms, this.max) | 0;\n};\n\n/**\n * Reset the number of attempts.\n *\n * @api public\n */\n\nBackoff.prototype.reset = function(){\n  this.attempts = 0;\n};\n\n/**\n * Set the minimum duration\n *\n * @api public\n */\n\nBackoff.prototype.setMin = function(min){\n  this.ms = min;\n};\n\n/**\n * Set the maximum duration\n *\n * @api public\n */\n\nBackoff.prototype.setMax = function(max){\n  this.max = max;\n};\n\n/**\n * Set the jitter\n *\n * @api public\n */\n\nBackoff.prototype.setJitter = function(jitter){\n  this.jitter = jitter;\n};\n\n"],"sourceRoot":""}
