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socket.io.esm.min.js

socket.io.esm.min.js 39 KB
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  1. /*!
    2. 

  2.  * Socket.IO v4.7.5
    3. 

  3.  * (c) 2014-2024 Guillermo Rauch
    4. 

  4.  * Released under the MIT License.
    5. 

  5.  */
    6. 

  6. const t=Object.create(null);t.open="0",t.close="1",t.ping="2",t.pong="3",t.message="4",t.upgrade="5",t.noop="6";const e=Object.create(null);Object.keys(t).forEach((s=>{e[t[s]]=s}));const s={type:"error",data:"parser error"},n="function"==typeof Blob||"undefined"!=typeof Blob&&"[object BlobConstructor]"===Object.prototype.toString.call(Blob),i="function"==typeof ArrayBuffer,r=t=>"function"==typeof ArrayBuffer.isView?ArrayBuffer.isView(t):t&&t.buffer instanceof ArrayBuffer,o=({type:e,data:s},o,h)=>n&&s instanceof Blob?o?h(s):a(s,h):i&&(s instanceof ArrayBuffer||r(s))?o?h(s):a(new Blob([s]),h):h(t[e]+(s||"")),a=(t,e)=>{const s=new FileReader;return s.onload=function(){const t=s.result.split(",")[1];e("b"+(t||""))},s.readAsDataURL(t)};function h(t){return t instanceof Uint8Array?t:t instanceof ArrayBuffer?new Uint8Array(t):new Uint8Array(t.buffer,t.byteOffset,t.byteLength)}let c;const u="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/",p="undefined"==typeof 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n=()=>{s||(e.send([{type:"ping",data:"probe"}]),e.once("packet",(t=>{if(!s)if("pong"===t.type&&"probe"===t.data){if(this.upgrading=!0,this.emitReserved("upgrading",e),!e)return;X.priorWebsocketSuccess="websocket"===e.name,this.transport.pause((()=>{s||"closed"!==this.readyState&&(c(),this.setTransport(e),e.send([{type:"upgrade"}]),this.emitReserved("upgrade",e),e=null,this.upgrading=!1,this.flush())}))}else{const t=new Error("probe error");t.transport=e.name,this.emitReserved("upgradeError",t)}})))};function i(){s||(s=!0,c(),e.close(),e=null)}const r=t=>{const s=new Error("probe error: "+t);s.transport=e.name,i(),this.emitReserved("upgradeError",s)};function o(){r("transport closed")}function a(){r("socket closed")}function h(t){e&&t.name!==e.name&&i()}const c=()=>{e.removeListener("open",n),e.removeListener("error",r),e.removeListener("close",o),this.off("close",a),this.off("upgrading",h)};e.once("open",n),e.once("error",r),e.once("close",o),this.once("close",a),this.once("upgrading",h),-1!==this.upgrades.indexOf("webtransport")&&"webtransport"!==t?this.setTimeoutFn((()=>{s||e.open()}),200):e.open()}onOpen(){if(this.readyState="open",X.priorWebsocketSuccess="websocket"===this.transport.name,this.emitReserved("open"),this.flush(),"open"===this.readyState&&this.opts.upgrade){let t=0;const e=this.upgrades.length;for(;t<e;t++)this.probe(this.upgrades[t])}}onPacket(t){if("opening"===this.readyState||"open"===this.readyState||"closing"===this.readyState)switch(this.emitReserved("packet",t),this.emitReserved("heartbeat"),this.resetPingTimeout(),t.type){case"open":this.onHandshake(JSON.parse(t.data));break;case"ping":this.sendPacket("pong"),this.emitReserved("ping"),this.emitReserved("pong");break;case"error":const 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)}}onHandshake(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.maxPayload=t.maxPayload,this.onOpen(),"closed"!==this.readyState&&this.resetPingTimeout()}resetPingTimeout(){this.clearTimeoutFn(this.pingTimeoutTimer),this.pingTimeoutTimer=this.setTimeoutFn((()=>{this.onClose("ping timeout")}),this.pingInterval+this.pingTimeout),this.opts.autoUnref&&this.pingTimeoutTimer.unref()}onDrain(){this.writeBuffer.splice(0,this.prevBufferLen),this.prevBufferLen=0,0===this.writeBuffer.length?this.emitReserved("drain"):this.flush()}flush(){if("closed"!==this.readyState&&this.transport.writable&&!this.upgrading&&this.writeBuffer.length){const t=this.getWritablePackets();this.transport.send(t),this.prevBufferLen=t.length,this.emitReserved("flush")}}getWritablePackets(){if(!(this.maxPayload&&"polling"===this.transport.name&&this.writeBuffer.length>1))return this.writeBuffer;let t=1;for(let s=0;s<this.writeBuffer.length;s++){const n=this.writeBuffer[s].data;if(n&&(t+="string"==typeof(e=n)?function(t){let e=0,s=0;for(let n=0,i=t.length;n<i;n++)e=t.charCodeAt(n),e<128?s+=1:e<2048?s+=2:e<55296||e>=57344?s+=3:(n++,s+=4);return s}(e):Math.ceil(1.33*(e.byteLength||e.size))),s>0&&t>this.maxPayload)return this.writeBuffer.slice(0,s);t+=2}var e;return this.writeBuffer}write(t,e,s){return this.sendPacket("message",t,e,s),this}send(t,e,s){return this.sendPacket("message",t,e,s),this}sendPacket(t,e,s,n){if("function"==typeof e&&(n=e,e=void 0),"function"==typeof s&&(n=s,s=null),"closing"===this.readyState||"closed"===this.readyState)return;(s=s||{}).compress=!1!==s.compress;const i={type:t,data:e,options:s};this.emitReserved("packetCreate",i),this.writeBuffer.push(i),n&&this.once("flush",n),this.flush()}close(){const t=()=>{this.onClose("forced close"),this.transport.close()},e=()=>{this.off("upgrade",e),this.off("upgradeError",e),t()},s=()=>{this.once("upgrade",e),this.once("upgradeError",e)};return"opening"!==this.readyState&&"open"!==this.readyState||(this.readyState="closing",this.writeBuffer.length?this.once("drain",(()=>{this.upgrading?s():t()})):this.upgrading?s():t()),this}onError(t){X.priorWebsocketSuccess=!1,this.emitReserved("error",t),this.onClose("transport error",t)}onClose(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("beforeunload",this.beforeunloadEventListener,!1),removeEventListener("offline",this.offlineEventListener,!1)),this.readyState="closed",this.id=null,this.emitReserved("close",t,e),this.writeBuffer=[],this.prevBufferLen=0)}filterUpgrades(t){const e=[];let s=0;const n=t.length;for(;s<n;s++)~this.transports.indexOf(t[s])&&e.push(t[s]);return e}}X.protocol=4;const G="function"==typeof ArrayBuffer,Z=t=>"function"==typeof ArrayBuffer.isView?ArrayBuffer.isView(t):t.buffer instanceof ArrayBuffer,tt=Object.prototype.toString,et="function"==typeof Blob||"undefined"!=typeof Blob&&"[object BlobConstructor]"===tt.call(Blob),st="function"==typeof File||"undefined"!=typeof File&&"[object FileConstructor]"===tt.call(File);function nt(t){return G&&(t instanceof ArrayBuffer||Z(t))||et&&t instanceof Blob||st&&t instanceof File}function it(t,e){if(!t||"object"!=typeof t)return!1;if(Array.isArray(t)){for(let e=0,s=t.length;e<s;e++)if(it(t[e]))return!0;return!1}if(nt(t))return!0;if(t.toJSON&&"function"==typeof t.toJSON&&1===arguments.length)return it(t.toJSON(),!0);for(const e in t)if(Object.prototype.hasOwnProperty.call(t,e)&&it(t[e]))return!0;return!1}function rt(t){const e=[],s=t.data,n=t;return n.data=ot(s,e),n.attachments=e.length,{packet:n,buffers:e}}function ot(t,e){if(!t)return t;if(nt(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]=ot(t[n],e);return s}if("object"==typeof t&&!(t instanceof Date)){const s={};for(const n in t)Object.prototype.hasOwnProperty.call(t,n)&&(s[n]=ot(t[n],e));return s}return t}function at(t,e){return t.data=ht(t.data,e),delete t.attachments,t}function ht(t,e){if(!t)return t;if(t&&!0===t._placeholder){if("number"==typeof t.num&&t.num>=0&&t.num<e.length)return e[t.num];throw new Error("illegal attachments")}if(Array.isArray(t))for(let s=0;s<t.length;s++)t[s]=ht(t[s],e);else if("object"==typeof t)for(const s in t)Object.prototype.hasOwnProperty.call(t,s)&&(t[s]=ht(t[s],e));return t}const ct=["connect","connect_error","disconnect","disconnecting","newListener","removeListener"],ut=5;var pt;!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"}(pt||(pt={}));function lt(t){return"[object Object]"===Object.prototype.toString.call(t)}class dt extends k{constructor(t){super(),this.reviver=t}add(t){let e;if("string"==typeof t){if(this.reconstructor)throw new Error("got plaintext data when reconstructing a packet");e=this.decodeString(t);const s=e.type===pt.BINARY_EVENT;s||e.type===pt.BINARY_ACK?(e.type=s?pt.EVENT:pt.ACK,this.reconstructor=new ft(e),0===e.attachments&&super.emitReserved("decoded",e)):super.emitReserved("decoded",e)}else{if(!nt(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===pt[s.type])throw new Error("unknown packet type "+s.type);if(s.type===pt.BINARY_EVENT||s.type===pt.BINARY_ACK){const n=e+1;for(;"-"!==t.charAt(++e)&&e!=t.length;);const i=t.substring(n,e);if(i!=Number(i)||"-"!==t.charAt(e))throw new Error("Illegal attachments");s.attachments=Number(i)}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=this.tryParse(t.substr(e));if(!dt.isPayloadValid(s.type,n))throw new Error("invalid payload");s.data=n}return s}tryParse(t){try{return JSON.parse(t,this.reviver)}catch(t){return!1}}static isPayloadValid(t,e){switch(t){case pt.CONNECT:return lt(e);case pt.DISCONNECT:return void 0===e;case pt.CONNECT_ERROR:return"string"==typeof e||lt(e);case pt.EVENT:case pt.BINARY_EVENT:return Array.isArray(e)&&("number"==typeof e[0]||"string"==typeof e[0]&&-1===ct.indexOf(e[0]));case pt.ACK:case pt.BINARY_ACK:return Array.isArray(e)}}destroy(){this.reconstructor&&(this.reconstructor.finishedReconstruction(),this.reconstructor=null)}}class ft{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=at(this.reconPack,this.buffers);return this.finishedReconstruction(),t}return null}finishedReconstruction(){this.reconPack=null,this.buffers=[]}}var yt=Object.freeze({__proto__:null,protocol:5,get PacketType(){return pt},Encoder:class{constructor(t){this.replacer=t}encode(t){return t.type!==pt.EVENT&&t.type!==pt.ACK||!it(t)?[this.encodeAsString(t)]:this.encodeAsBinary({type:t.type===pt.EVENT?pt.BINARY_EVENT:pt.BINARY_ACK,nsp:t.nsp,data:t.data,id:t.id})}encodeAsString(t){let e=""+t.type;return t.type!==pt.BINARY_EVENT&&t.type!==pt.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,this.replacer)),e}encodeAsBinary(t){const e=rt(t),s=this.encodeAsString(e.packet),n=e.buffers;return n.unshift(s),n}},Decoder:dt});function gt(t,e,s){return t.on(e,s),function(){t.off(e,s)}}const mt=Object.freeze({connect:1,connect_error:1,disconnect:1,disconnecting:1,newListener:1,removeListener:1});class bt extends k{constructor(t,e,s){super(),this.connected=!1,this.recovered=!1,this.receiveBuffer=[],this.sendBuffer=[],this._queue=[],this._queueSeq=0,this.ids=0,this.acks={},this.flags={},this.io=t,this.nsp=e,s&&s.auth&&(this.auth=s.auth),this._opts=Object.assign({},s),this.io._autoConnect&&this.open()}get disconnected(){return!this.connected}subEvents(){if(this.subs)return;const t=this.io;this.subs=[gt(t,"open",this.onopen.bind(this)),gt(t,"packet",this.onpacket.bind(this)),gt(t,"error",this.onerror.bind(this)),gt(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(mt.hasOwnProperty(t))throw new Error('"'+t.toString()+'" is a reserved event name');if(e.unshift(t),this._opts.retries&&!this.flags.fromQueue&&!this.flags.volatile)return this._addToQueue(e),this;const s={type:pt.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.notifyOutgoingListeners(s),this.packet(s)):this.sendBuffer.push(s)),this.flags={},this}_registerAckCallback(t,e){var s;const n=null!==(s=this.flags.timeout)&&void 0!==s?s:this._opts.ackTimeout;if(void 0===n)return void(this.acks[t]=e);const i=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"))}),n),r=(...t)=>{this.io.clearTimeoutFn(i),e.apply(this,t)};r.withError=!0,this.acks[t]=r}emitWithAck(t,...e){return new Promise(((s,n)=>{const i=(t,e)=>t?n(t):s(e);i.withError=!0,e.push(i),this.emit(t,...e)}))}_addToQueue(t){let e;"function"==typeof t[t.length-1]&&(e=t.pop());const s={id:this._queueSeq++,tryCount:0,pending:!1,args:t,flags:Object.assign({fromQueue:!0},this.flags)};t.push(((t,...n)=>{if(s!==this._queue[0])return;return null!==t?s.tryCount>this._opts.retries&&(this._queue.shift(),e&&e(t)):(this._queue.shift(),e&&e(null,...n)),s.pending=!1,this._drainQueue()})),this._queue.push(s),this._drainQueue()}_drainQueue(t=!1){if(!this.connected||0===this._queue.length)return;const e=this._queue[0];e.pending&&!t||(e.pending=!0,e.tryCount++,this.flags=e.flags,this.emit.apply(this,e.args))}packet(t){t.nsp=this.nsp,this.io._packet(t)}onopen(){"function"==typeof this.auth?this.auth((t=>{this._sendConnectPacket(t)})):this._sendConnectPacket(this.auth)}_sendConnectPacket(t){this.packet({type:pt.CONNECT,data:this._pid?Object.assign({pid:this._pid,offset:this._lastOffset},t):t})}onerror(t){this.connected||this.emitReserved("connect_error",t)}onclose(t,e){this.connected=!1,delete this.id,this.emitReserved("disconnect",t,e),this._clearAcks()}_clearAcks(){Object.keys(this.acks).forEach((t=>{if(!this.sendBuffer.some((e=>String(e.id)===t))){const e=this.acks[t];delete this.acks[t],e.withError&&e.call(this,new Error("socket has been disconnected"))}}))}onpacket(t){if(t.nsp===this.nsp)switch(t.type){case pt.CONNECT:t.data&&t.data.sid?this.onconnect(t.data.sid,t.data.pid):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 pt.EVENT:case pt.BINARY_EVENT:this.onevent(t);break;case pt.ACK:case pt.BINARY_ACK:this.onack(t);break;case pt.DISCONNECT:this.ondisconnect();break;case pt.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),this._pid&&t.length&&"string"==typeof t[t.length-1]&&(this._lastOffset=t[t.length-1])}ack(t){const e=this;let s=!1;return function(...n){s||(s=!0,e.packet({type:pt.ACK,id:t,data:n}))}}onack(t){const e=this.acks[t.id];"function"==typeof e&&(delete this.acks[t.id],e.withError&&t.data.unshift(null),e.apply(this,t.data))}onconnect(t,e){this.id=t,this.recovered=e&&this._pid===e,this._pid=e,this.connected=!0,this.emitBuffered(),this.emitReserved("connect"),this._drainQueue(!0)}emitBuffered(){this.receiveBuffer.forEach((t=>this.emitEvent(t))),this.receiveBuffer=[],this.sendBuffer.forEach((t=>{this.notifyOutgoingListeners(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:pt.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||[]}onAnyOutgoing(t){return this._anyOutgoingListeners=this._anyOutgoingListeners||[],this._anyOutgoingListeners.push(t),this}prependAnyOutgoing(t){return this._anyOutgoingListeners=this._anyOutgoingListeners||[],this._anyOutgoingListeners.unshift(t),this}offAnyOutgoing(t){if(!this._anyOutgoingListeners)return this;if(t){const e=this._anyOutgoingListeners;for(let s=0;s<e.length;s++)if(t===e[s])return e.splice(s,1),this}else this._anyOutgoingListeners=[];return this}listenersAnyOutgoing(){return this._anyOutgoingListeners||[]}notifyOutgoingListeners(t){if(this._anyOutgoingListeners&&this._anyOutgoingListeners.length){const e=this._anyOutgoingListeners.slice();for(const s of e)s.apply(this,t.data)}}}function wt(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}wt.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)},wt.prototype.reset=function(){this.attempts=0},wt.prototype.setMin=function(t){this.ms=t},wt.prototype.setMax=function(t){this.max=t},wt.prototype.setJitter=function(t){this.jitter=t};class vt extends k{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,T(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 wt({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||yt;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 X(this.uri,this.opts);const e=this.engine,s=this;this._readyState="opening",this.skipReconnect=!1;const n=gt(e,"open",(function(){s.onopen(),t&&t()})),i=e=>{this.cleanup(),this._readyState="closed",this.emitReserved("error",e),t?t(e):this.maybeReconnectOnOpen()},r=gt(e,"error",i);if(!1!==this._timeout){const t=this._timeout,s=this.setTimeoutFn((()=>{n(),i(new Error("timeout")),e.close()}),t);this.opts.autoUnref&&s.unref(),this.subs.push((()=>{this.clearTimeoutFn(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(gt(t,"ping",this.onping.bind(this)),gt(t,"data",this.ondata.bind(this)),gt(t,"error",this.onerror.bind(this)),gt(t,"close",this.onclose.bind(this)),gt(this.decoder,"decoded",this.ondecoded.bind(this)))}onping(){this.emitReserved("ping")}ondata(t){try{this.decoder.add(t)}catch(t){this.onclose("parse error",t)}}ondecoded(t){K((()=>{this.emitReserved("packet",t)}),this.setTimeoutFn)}onerror(t){this.emitReserved("error",t)}socket(t,e){let s=this.nsps[t];return s?this._autoConnect&&!s.active&&s.connect():(s=new bt(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,e){this.cleanup(),this.backoff.reset(),this._readyState="closed",this.emitReserved("close",t,e),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((()=>{this.clearTimeoutFn(s)}))}}onreconnect(){const t=this.backoff.attempts;this._reconnecting=!1,this.backoff.reset(),this.emitReserved("reconnect",t)}}const kt={};function _t(t,e){"object"==typeof t&&(e=t,t=void 0);const s=function(t,e="",s){let n=t;s=s||"undefined"!=typeof location&&location,null==t&&(t=s.protocol+"//"+s.host),"string"==typeof t&&("/"===t.charAt(0)&&(t="/"===t.charAt(1)?s.protocol+t:s.host+t),/^(https?|wss?):\/\//.test(t)||(t=void 0!==s?s.protocol+"//"+t:"https://"+t),n=Q(t)),n.port||(/^(http|ws)$/.test(n.protocol)?n.port="80":/^(http|ws)s$/.test(n.protocol)&&(n.port="443")),n.path=n.path||"/";const i=-1!==n.host.indexOf(":")?"["+n.host+"]":n.host;return n.id=n.protocol+"://"+i+":"+n.port+e,n.href=n.protocol+"://"+i+(s&&s.port===n.port?"":":"+n.port),n}(t,(e=e||{}).path||"/socket.io"),n=s.source,i=s.id,r=s.path,o=kt[i]&&r in kt[i].nsps;let a;return e.forceNew||e["force new connection"]||!1===e.multiplex||o?a=new vt(n,e):(kt[i]||(kt[i]=new vt(n,e)),a=kt[i]),s.query&&!e.query&&(e.query=s.queryKey),a.socket(s.path,e)}Object.assign(_t,{Manager:vt,Socket:bt,io:_t,connect:_t});export{vt as Manager,bt as Socket,_t as connect,_t as default,_t as io,ut as protocol};
    7. 

  7. //# sourceMappingURL=socket.io.esm.min.js.map
    8.