nixchat/server/node_modules/engine.io-client/dist/engine.io.esm.min.js

/*!
 * Engine.IO v6.1.1
 * (c) 2014-2021 Guillermo Rauch
 * Released under the MIT License.
 */
var t={exports:{}};try{t.exports="undefined"!=typeof XMLHttpRequest&&"withCredentials"in new XMLHttpRequest}catch(e){t.exports=!1}var e=t.exports,s="undefined"!=typeof self?self:"undefined"!=typeof window?window:Function("return this")();function r(t){const r=t.xdomain;try{if("undefined"!=typeof XMLHttpRequest&&(!r||e))return new XMLHttpRequest}catch(t){}if(!r)try{return new(s[["Active"].concat("Object").join("X")])("Microsoft.XMLHTTP")}catch(t){}}function o(t,...e){return e.reduce(((e,s)=>(t.hasOwnProperty(s)&&(e[s]=t[s]),e)),{})}const i=setTimeout,n=clearTimeout;function a(t,e){e.useNativeTimers?(t.setTimeoutFn=i.bind(s),t.clearTimeoutFn=n.bind(s)):(t.setTimeoutFn=setTimeout.bind(s),t.clearTimeoutFn=clearTimeout.bind(s))}var h=p;function p(t){if(t)return function(t){for(var e in p.prototype)t[e]=p.prototype[e];return t}(t)}p.prototype.on=p.prototype.addEventListener=function(t,e){return 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g="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/",b="undefined"==typeof Uint8Array?[]:new Uint8Array(256),v=0;v<g.length;v++)b[g.charCodeAt(v)]=v;const w="function"==typeof ArrayBuffer,k=(t,e)=>{if("string"!=typeof t)return{type:"message",data:x(t,e)};const s=t.charAt(0);if("b"===s)return{type:"message",data:T(t.substring(1),e)};return u[s]?t.length>1?{type:u[s],data:t.substring(1)}:{type:u[s]}:l},T=(t,e)=>{if(w){const s=function(t){var e,s,r,o,i,n=.75*t.length,a=t.length,h=0;"="===t[t.length-1]&&(n--,"="===t[t.length-2]&&n--);var p=new ArrayBuffer(n),c=new Uint8Array(p);for(e=0;e<a;e+=4)s=b[t.charCodeAt(e)],r=b[t.charCodeAt(e+1)],o=b[t.charCodeAt(e+2)],i=b[t.charCodeAt(e+3)],c[h++]=s<<2|r>>4,c[h++]=(15&r)<<4|o>>2,c[h++]=(3&o)<<6|63&i;return p}(t);return x(s,e)}return{base64:!0,data:t}},x=(t,e)=>"blob"===e&&t instanceof ArrayBuffer?new Blob([t]):t,S=String.fromCharCode(30);class E extends h{constructor(t){super(),this.writable=!1,a(this,t),this.opts=t,this.query=t.query,this.readyState="",this.socket=t.socket}onError(t,e){const s=new Error(t);return s.type="TransportError",s.description=e,super.emit("error",s),this}open(){return"closed"!==this.readyState&&""!==this.readyState||(this.readyState="opening",this.doOpen()),this}close(){return"opening"!==this.readyState&&"open"!==this.readyState||(this.doClose(),this.onClose()),this}send(t){"open"===this.readyState&&this.write(t)}onOpen(){this.readyState="open",this.writable=!0,super.emit("open")}onData(t){const e=k(t,this.socket.binaryType);this.onPacket(e)}onPacket(t){super.emit("packet",t)}onClose(){this.readyState="closed",super.emit("close")}}var C,q="0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-_".split(""),B={},L=0,O=0;function R(t){var e="";do{e=q[t%64]+e,t=Math.floor(t/64)}while(t>0);return e}function A(){var t=R(+new Date);return 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e+"://"+(-1!==this.opts.hostname.indexOf(":")?"["+this.opts.hostname+"]":this.opts.hostname)+s+this.opts.path+(r.length?"?"+r:"")}}function _(){}const j=null!=new r({xdomain:!1}).responseType;class D extends h{constructor(t,e){super(),a(this,e),this.opts=e,this.method=e.method||"GET",this.uri=t,this.async=!1!==e.async,this.data=void 0!==e.data?e.data:null,this.create()}create(){const t=o(this.opts,"agent","pfx","key","passphrase","cert","ca","ciphers","rejectUnauthorized","autoUnref");t.xdomain=!!this.opts.xd,t.xscheme=!!this.opts.xs;const e=this.xhr=new r(t);try{e.open(this.method,this.uri,this.async);try{if(this.opts.extraHeaders){e.setDisableHeaderCheck&&e.setDisableHeaderCheck(!0);for(let t in this.opts.extraHeaders)this.opts.extraHeaders.hasOwnProperty(t)&&e.setRequestHeader(t,this.opts.extraHeaders[t])}}catch(t){}if("POST"===this.method)try{e.setRequestHeader("Content-type","text/plain;charset=UTF-8")}catch(t){}try{e.setRequestHeader("Accept","*/*")}catch(t){}"withCredentials"in 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attachEvent)attachEvent("onunload",F);else if("function"==typeof addEventListener){addEventListener("onpagehide"in s?"pagehide":"unload",F,!1)}function F(){for(let t in D.requests)D.requests.hasOwnProperty(t)&&D.requests[t].abort()}const I="function"==typeof Promise&&"function"==typeof Promise.resolve?t=>Promise.resolve().then(t):(t,e)=>e(t,0),M=s.WebSocket||s.MozWebSocket,W="undefined"!=typeof navigator&&"string"==typeof navigator.product&&"reactnative"===navigator.product.toLowerCase();class N extends E{constructor(t){super(t),this.supportsBinary=!t.forceBase64}get name(){return"websocket"}doOpen(){if(!this.check())return;const t=this.uri(),e=this.opts.protocols,s=W?{}:o(this.opts,"agent","perMessageDeflate","pfx","key","passphrase","cert","ca","ciphers","rejectUnauthorized","localAddress","protocolVersion","origin","maxPayload","family","checkServerIdentity");this.opts.extraHeaders&&(s.headers=this.opts.extraHeaders);try{this.ws=W?new M(t,e,s):e?new M(t,e):new M(t)}catch(t){return this.emit("error",t)}this.ws.binaryType=this.socket.binaryType||"arraybuffer",this.addEventListeners()}addEventListeners(){this.ws.onopen=()=>{this.opts.autoUnref&&this.ws._socket.unref(),this.onOpen()},this.ws.onclose=this.onClose.bind(this),this.ws.onmessage=t=>this.onData(t.data),this.ws.onerror=t=>this.onError("websocket error",t)}write(t){this.writable=!1;for(let e=0;e<t.length;e++){const s=t[e],r=e===t.length-1;y(s,this.supportsBinary,(t=>{try{this.ws.send(t)}catch(t){}r&&I((()=>{this.writable=!0,this.emit("drain")}),this.setTimeoutFn)}))}}doClose(){void 0!==this.ws&&(this.ws.close(),this.ws=null)}uri(){let t=this.query||{};const e=this.opts.secure?"wss":"ws";let s="";this.opts.port&&("wss"===e&&443!==Number(this.opts.port)||"ws"===e&&80!==Number(this.opts.port))&&(s=":"+this.opts.port),this.opts.timestampRequests&&(t[this.opts.timestampParam]=P()),this.supportsBinary||(t.b64=1);const r=U.encode(t);return e+"://"+(-1!==this.opts.hostname.indexOf(":")?"["+this.opts.hostname+"]":this.opts.hostname)+s+this.opts.path+(r.length?"?"+r:"")}check(){return!(!M||"__initialize"in M&&this.name===N.prototype.name)}}const X={websocket:N,polling:class extends H{constructor(t){if(super(t),"undefined"!=typeof location){const e="https:"===location.protocol;let s=location.port;s||(s=e?"443":"80"),this.xd="undefined"!=typeof location&&t.hostname!==location.hostname||s!==t.port,this.xs=t.secure!==e}const e=t&&t.forceBase64;this.supportsBinary=j&&!e}request(t={}){return Object.assign(t,{xd:this.xd,xs:this.xs},this.opts),new D(this.uri(),t)}doWrite(t,e){const s=this.request({method:"POST",data:t});s.on("success",e),s.on("error",(t=>{this.onError("xhr post error",t)}))}doPoll(){const t=this.request();t.on("data",this.onData.bind(this)),t.on("error",(t=>{this.onError("xhr poll error",t)})),this.pollXhr=t}}};var $=/^(?:(?![^:@]+:[^:@\/]*@)(http|https|ws|wss):\/\/)?((?:(([^:@]*)(?::([^:@]*))?)?@)?((?:[a-f0-9]{0,4}:){2,7}[a-f0-9]{0,4}|[^:\/?#]*)(?::(\d*))?)(((\/(?:[^?#](?![^?#\/]*\.[^?#\/.]+(?:[?#]|$)))*\/?)?([^?#\/]*))(?:\?([^#]*))?(?:#(.*))?)/,z=["source","protocol","authority","userInfo","user","password","host","port","relative","path","directory","file","query","anchor"],V=function(t){var e=t,s=t.indexOf("["),r=t.indexOf("]");-1!=s&&-1!=r&&(t=t.substring(0,s)+t.substring(s,r).replace(/:/g,";")+t.substring(r,t.length));for(var o,i,n=$.exec(t||""),a={},h=14;h--;)a[z[h]]=n[h]||"";return-1!=s&&-1!=r&&(a.source=e,a.host=a.host.substring(1,a.host.length-1).replace(/;/g,":"),a.authority=a.authority.replace("[","").replace("]","").replace(/;/g,":"),a.ipv6uri=!0),a.pathNames=function(t,e){var s=/\/{2,9}/g,r=e.replace(s,"/").split("/");"/"!=e.substr(0,1)&&0!==e.length||r.splice(0,1);"/"==e.substr(e.length-1,1)&&r.splice(r.length-1,1);return r}(0,a.path),a.queryKey=(o=a.query,i={},o.replace(/(?:^|&)([^&=]*)=?([^&]*)/g,(function(t,e,s){e&&(i[e]=s)})),i),a};class G extends h{constructor(t,e={}){super(),t&&"object"==typeof t&&(e=t,t=null),t?(t=V(t),e.hostname=t.host,e.secure="https"===t.protocol||"wss"===t.protocol,e.port=t.port,t.query&&(e.query=t.query)):e.host&&(e.hostname=V(e.host).host),a(this,e),this.secure=null!=e.secure?e.secure:"undefined"!=typeof location&&"https:"===location.protocol,e.hostname&&!e.port&&(e.port=this.secure?"443":"80"),this.hostname=e.hostname||("undefined"!=typeof location?location.hostname:"localhost"),this.port=e.port||("undefined"!=typeof location&&location.port?location.port:this.secure?"443":"80"),this.transports=e.transports||["polling","websocket"],this.readyState="",this.writeBuffer=[],this.prevBufferLen=0,this.opts=Object.assign({path:"/engine.io",agent:!1,withCredentials:!1,upgrade:!0,timestampParam:"t",rememberUpgrade:!1,rejectUnauthorized:!0,perMessageDeflate:{threshold:1024},transportOptions:{},closeOnBeforeunload:!0},e),this.opts.path=this.opts.path.replace(/\/$/,"")+"/","string"==typeof this.opts.query&&(this.opts.query=U.decode(this.opts.query)),this.id=null,this.upgrades=null,this.pingInterval=null,this.pingTimeout=null,this.pingTimeoutTimer=null,"function"==typeof addEventListener&&(this.opts.closeOnBeforeunload&&addEventListener("beforeunload",(()=>{this.transport&&(this.transport.removeAllListeners(),this.transport.close())}),!1),"localhost"!==this.hostname&&(this.offlineEventListener=()=>{this.onClose("transport close")},addEventListener("offline",this.offlineEventListener,!1))),this.open()}createTransport(t){const e=function(t){const e={};for(let s in t)t.hasOwnProperty(s)&&(e[s]=t[s]);return e}(this.opts.query);e.EIO=4,e.transport=t,this.id&&(e.sid=this.id);const s=Object.assign({},this.opts.transportOptions[t],this.opts,{query:e,socket:this,hostname:this.hostname,secure:this.secure,port:this.port});return new X[t](s)}open(){let t;if(this.opts.rememberUpgrade&&G.priorWebsocketSuccess&&-1!==this.transports.indexOf("websocket"))t="websocket";else{if(0===this.transports.length)return void this.setTimeoutFn((()=>{this.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)}setTransport(t){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",(()=>{this.onClose("transport close")}))}probe(t){let e=this.createTransport(t),s=!1;G.priorWebsocketSuccess=!1;const r=()=>{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;G.priorWebsocketSuccess="websocket"===e.name,this.transport.pause((()=>{s||"closed"!==this.readyState&&(p(),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 o(){s||(s=!0,p(),e.close(),e=null)}const i=t=>{const s=new Error("probe error: "+t);s.transport=e.name,o(),this.emitReserved("upgradeError",s)};function n(){i("transport closed")}function a(){i("socket closed")}function h(t){e&&t.name!==e.name&&o()}const p=()=>{e.removeListener("open",r),e.removeListener("error",i),e.removeListener("close",n),this.off("close",a),this.off("upgrading",h)};e.once("open",r),e.once("error",i),e.once("close",n),this.once("close",a),this.once("upgrading",h),e.open()}onOpen(){if(this.readyState="open",G.priorWebsocketSuccess="websocket"===this.transport.name,this.emitReserved("open"),this.flush(),"open"===this.readyState&&this.opts.upgrade&&this.transport.pause){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"),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":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.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(){"closed"!==this.readyState&&this.transport.writable&&!this.upgrading&&this.writeBuffer.length&&(this.transport.send(this.writeBuffer),this.prevBufferLen=this.writeBuffer.length,this.emitReserved("flush"))}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,r){if("function"==typeof e&&(r=e,e=void 0),"function"==typeof s&&(r=s,s=null),"closing"===this.readyState||"closed"===this.readyState)return;(s=s||{}).compress=!1!==s.compress;const o={type:t,data:e,options:s};this.emitReserved("packetCreate",o),this.writeBuffer.push(o),r&&this.once("flush",r),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){G.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("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 r=t.length;for(;s<r;s++)~this.transports.indexOf(t[s])&&e.push(t[s]);return e}}G.protocol=4;const J=G.protocol;export{G as Socket,E as Transport,a as installTimerFunctions,J as protocol,X as transports};
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