Passed
Push — master ( dd3695...82426c )
by Jacob
02:24
created

socket.io.js ➔ ... ➔ r.onpacket   D

Complexity

Conditions 9
Paths 9

Size

Total Lines 1

Duplication

Lines 0
Ratio 0 %

Importance

Changes 1
Bugs 0 Features 0
Metric Value
cc 9
c 1
b 0
f 0
nc 9
nop 1
dl 0
loc 1
rs 4.909
1
!function(t,e){"object"==typeof exports&&"object"==typeof module?module.exports=e():"function"==typeof define&&define.amd?define([],e):"object"==typeof exports?exports.io=e():t.io=e()}(this,function(){return function(t){function e(r){if(n[r])return n[r].exports;var o=n[r]={exports:{},id:r,loaded:!1};return t[r].call(o.exports,o,o.exports,e),o.loaded=!0,o.exports}var n={};return e.m=t,e.c=n,e.p="",e(0)}([function(t,e,n){"use strict";function r(t,e){"object"===("undefined"==typeof t?"undefined":o(t))&&(e=t,t=void 0),e=e||{};var n,r=i(t),s=r.source,u=r.id,h=r.path,f=p[u]&&h in p[u].nsps,l=e.forceNew||e["force new connection"]||!1===e.multiplex||f;return l?(c("ignoring socket cache for %s",s),n=a(s,e)):(p[u]||(c("new io instance for %s",s),p[u]=a(s,e)),n=p[u]),r.query&&!e.query&&(e.query=r.query),n.socket(r.path,e)}var o="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},i=n(1),s=n(7),a=n(13),c=n(3)("socket.io-client");t.exports=e=r;var p=e.managers={};e.protocol=s.protocol,e.connect=r,e.Manager=n(13),e.Socket=n(39)},function(t,e,n){(function(e){"use strict";function r(t,n){var r=t;n=n||e.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)||(i("protocol-less url %s",t),t="undefined"!=typeof n?n.protocol+"//"+t:"https://"+t),i("parse %s",t),r=o(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 s=r.host.indexOf(":")!==-1,a=s?"["+r.host+"]":r.host;return r.id=r.protocol+"://"+a+":"+r.port,r.href=r.protocol+"://"+a+(n&&n.port===r.port?"":":"+r.port),r}var o=n(2),i=n(3)("socket.io-client:url");t.exports=r}).call(e,function(){return this}())},function(t,e){var n=/^(?:(?![^:@]+:[^:@\/]*@)(http|https|ws|wss):\/\/)?((?:(([^:@]*)(?::([^:@]*))?)?@)?((?:[a-f0-9]{0,4}:){2,7}[a-f0-9]{0,4}|[^:\/?#]*)(?::(\d*))?)(((\/(?:[^?#](?![^?#\/]*\.[^?#\/.]+(?:[?#]|$)))*\/?)?([^?#\/]*))(?:\?([^#]*))?(?:#(.*))?)/,r=["source","protocol","authority","userInfo","user","password","host","port","relative","path","directory","file","query","anchor"];t.exports=function(t){var e=t,o=t.indexOf("["),i=t.indexOf("]");o!=-1&&i!=-1&&(t=t.substring(0,o)+t.substring(o,i).replace(/:/g,";")+t.substring(i,t.length));for(var s=n.exec(t||""),a={},c=14;c--;)a[r[c]]=s[c]||"";return o!=-1&&i!=-1&&(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}},function(t,e,n){(function(r){function o(){return!("undefined"==typeof window||!window.process||"renderer"!==window.process.type)||("undefined"!=typeof document&&document.documentElement&&document.documentElement.style&&document.documentElement.style.WebkitAppearance||"undefined"!=typeof window&&window.console&&(window.console.firebug||window.console.exception&&window.console.table)||"undefined"!=typeof navigator&&navigator.userAgent&&navigator.userAgent.toLowerCase().match(/firefox\/(\d+)/)&&parseInt(RegExp.$1,10)>=31||"undefined"!=typeof navigator&&navigator.userAgent&&navigator.userAgent.toLowerCase().match(/applewebkit\/(\d+)/))}function i(t){var n=this.useColors;if(t[0]=(n?"%c":"")+this.namespace+(n?" %c":" ")+t[0]+(n?"%c ":" ")+"+"+e.humanize(this.diff),n){var r="color: "+this.color;t.splice(1,0,r,"color: inherit");var o=0,i=0;t[0].replace(/%[a-zA-Z%]/g,function(t){"%%"!==t&&(o++,"%c"===t&&(i=o))}),t.splice(i,0,r)}}function s(){return"object"==typeof console&&console.log&&Function.prototype.apply.call(console.log,console,arguments)}function a(t){try{null==t?e.storage.removeItem("debug"):e.storage.debug=t}catch(n){}}function c(){var t;try{t=e.storage.debug}catch(n){}return!t&&"undefined"!=typeof r&&"env"in r&&(t=r.env.DEBUG),t}function p(){try{return window.localStorage}catch(t){}}e=t.exports=n(5),e.log=s,e.formatArgs=i,e.save=a,e.load=c,e.useColors=o,e.storage="undefined"!=typeof chrome&&"undefined"!=typeof chrome.storage?chrome.storage.local:p(),e.colors=["lightseagreen","forestgreen","goldenrod","dodgerblue","darkorchid","crimson"],e.formatters.j=function(t){try{return JSON.stringify(t)}catch(e){return"[UnexpectedJSONParseError]: "+e.message}},e.enable(c())}).call(e,n(4))},function(t,e){function n(){throw new Error("setTimeout has not been defined")}function r(){throw new Error("clearTimeout has not been defined")}function o(t){if(u===setTimeout)return setTimeout(t,0);if((u===n||!u)&&setTimeout)return u=setTimeout,setTimeout(t,0);try{return u(t,0)}catch(e){try{return u.call(null,t,0)}catch(e){return u.call(this,t,0)}}}function i(t){if(h===clearTimeout)return clearTimeout(t);if((h===r||!h)&&clearTimeout)return h=clearTimeout,clearTimeout(t);try{return h(t)}catch(e){try{return h.call(null,t)}catch(e){return h.call(this,t)}}}function s(){y&&l&&(y=!1,l.length?d=l.concat(d):m=-1,d.length&&a())}function a(){if(!y){var t=o(s);y=!0;for(var e=d.length;e;){for(l=d,d=[];++m<e;)l&&l[m].run();m=-1,e=d.length}l=null,y=!1,i(t)}}function c(t,e){this.fun=t,this.array=e}function p(){}var u,h,f=t.exports={};!function(){try{u="function"==typeof setTimeout?setTimeout:n}catch(t){u=n}try{h="function"==typeof clearTimeout?clearTimeout:r}catch(t){h=r}}();var l,d=[],y=!1,m=-1;f.nextTick=function(t){var e=new Array(arguments.length-1);if(arguments.length>1)for(var n=1;n<arguments.length;n++)e[n-1]=arguments[n];d.push(new c(t,e)),1!==d.length||y||o(a)},c.prototype.run=function(){this.fun.apply(null,this.array)},f.title="browser",f.browser=!0,f.env={},f.argv=[],f.version="",f.versions={},f.on=p,f.addListener=p,f.once=p,f.off=p,f.removeListener=p,f.removeAllListeners=p,f.emit=p,f.prependListener=p,f.prependOnceListener=p,f.listeners=function(t){return[]},f.binding=function(t){throw new Error("process.binding is not supported")},f.cwd=function(){return"/"},f.chdir=function(t){throw new Error("process.chdir is not supported")},f.umask=function(){return 0}},function(t,e,n){function r(t){var n,r=0;for(n in t)r=(r<<5)-r+t.charCodeAt(n),r|=0;return e.colors[Math.abs(r)%e.colors.length]}function o(t){function n(){if(n.enabled){var t=n,r=+new Date,o=r-(p||r);t.diff=o,t.prev=p,t.curr=r,p=r;for(var i=new Array(arguments.length),s=0;s<i.length;s++)i[s]=arguments[s];i[0]=e.coerce(i[0]),"string"!=typeof i[0]&&i.unshift("%O");var a=0;i[0]=i[0].replace(/%([a-zA-Z%])/g,function(n,r){if("%%"===n)return n;a++;var o=e.formatters[r];if("function"==typeof o){var s=i[a];n=o.call(t,s),i.splice(a,1),a--}return n}),e.formatArgs.call(t,i);var c=n.log||e.log||console.log.bind(console);c.apply(t,i)}}return n.namespace=t,n.enabled=e.enabled(t),n.useColors=e.useColors(),n.color=r(t),"function"==typeof e.init&&e.init(n),n}function i(t){e.save(t),e.names=[],e.skips=[];for(var n=("string"==typeof t?t:"").split(/[\s,]+/),r=n.length,o=0;o<r;o++)n[o]&&(t=n[o].replace(/\*/g,".*?"),"-"===t[0]?e.skips.push(new RegExp("^"+t.substr(1)+"$")):e.names.push(new RegExp("^"+t+"$")))}function s(){e.enable("")}function a(t){var n,r;for(n=0,r=e.skips.length;n<r;n++)if(e.skips[n].test(t))return!1;for(n=0,r=e.names.length;n<r;n++)if(e.names[n].test(t))return!0;return!1}function c(t){return t instanceof Error?t.stack||t.message:t}e=t.exports=o.debug=o["default"]=o,e.coerce=c,e.disable=s,e.enable=i,e.enabled=a,e.humanize=n(6),e.names=[],e.skips=[],e.formatters={};var p},function(t,e){function n(t){if(t=String(t),!(t.length>100)){var e=/^((?:\d+)?\.?\d+) *(milliseconds?|msecs?|ms|seconds?|secs?|s|minutes?|mins?|m|hours?|hrs?|h|days?|d|years?|yrs?|y)?$/i.exec(t);if(e){var n=parseFloat(e[1]),r=(e[2]||"ms").toLowerCase();switch(r){case"years":case"year":case"yrs":case"yr":case"y":return n*u;case"days":case"day":case"d":return n*p;case"hours":case"hour":case"hrs":case"hr":case"h":return n*c;case"minutes":case"minute":case"mins":case"min":case"m":return n*a;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}}}}function r(t){return t>=p?Math.round(t/p)+"d":t>=c?Math.round(t/c)+"h":t>=a?Math.round(t/a)+"m":t>=s?Math.round(t/s)+"s":t+"ms"}function o(t){return i(t,p,"day")||i(t,c,"hour")||i(t,a,"minute")||i(t,s,"second")||t+" ms"}function i(t,e,n){if(!(t<e))return t<1.5*e?Math.floor(t/e)+" "+n:Math.ceil(t/e)+" "+n+"s"}var s=1e3,a=60*s,c=60*a,p=24*c,u=365.25*p;t.exports=function(t,e){e=e||{};var i=typeof t;if("string"===i&&t.length>0)return n(t);if("number"===i&&isNaN(t)===!1)return e["long"]?o(t):r(t);throw new Error("val is not a non-empty string or a valid number. val="+JSON.stringify(t))}},function(t,e,n){function r(){}function o(t){var n=""+t.type;return e.BINARY_EVENT!==t.type&&e.BINARY_ACK!==t.type||(n+=t.attachments+"-"),t.nsp&&"/"!==t.nsp&&(n+=t.nsp+","),null!=t.id&&(n+=t.id),null!=t.data&&(n+=JSON.stringify(t.data)),h("encoded %j as %s",t,n),n}function i(t,e){function n(t){var n=d.deconstructPacket(t),r=o(n.packet),i=n.buffers;i.unshift(r),e(i)}d.removeBlobs(t,n)}function s(){this.reconstructor=null}function a(t){var n=0,r={type:Number(t.charAt(0))};if(null==e.types[r.type])return u();if(e.BINARY_EVENT===r.type||e.BINARY_ACK===r.type){for(var o="";"-"!==t.charAt(++n)&&(o+=t.charAt(n),n!=t.length););if(o!=Number(o)||"-"!==t.charAt(n))throw new Error("Illegal attachments");r.attachments=Number(o)}if("/"===t.charAt(n+1))for(r.nsp="";++n;){var i=t.charAt(n);if(","===i)break;if(r.nsp+=i,n===t.length)break}else r.nsp="/";var s=t.charAt(n+1);if(""!==s&&Number(s)==s){for(r.id="";++n;){var i=t.charAt(n);if(null==i||Number(i)!=i){--n;break}if(r.id+=t.charAt(n),n===t.length)break}r.id=Number(r.id)}return t.charAt(++n)&&(r=c(r,t.substr(n))),h("decoded %s as %j",t,r),r}function c(t,e){try{t.data=JSON.parse(e)}catch(n){return u()}return t}function p(t){this.reconPack=t,this.buffers=[]}function u(){return{type:e.ERROR,data:"parser error"}}var h=n(3)("socket.io-parser"),f=n(8),l=n(9),d=n(11),y=n(12);e.protocol=4,e.types=["CONNECT","DISCONNECT","EVENT","ACK","ERROR","BINARY_EVENT","BINARY_ACK"],e.CONNECT=0,e.DISCONNECT=1,e.EVENT=2,e.ACK=3,e.ERROR=4,e.BINARY_EVENT=5,e.BINARY_ACK=6,e.Encoder=r,e.Decoder=s,r.prototype.encode=function(t,n){if(t.type!==e.EVENT&&t.type!==e.ACK||!l(t.data)||(t.type=t.type===e.EVENT?e.BINARY_EVENT:e.BINARY_ACK),h("encoding packet %j",t),e.BINARY_EVENT===t.type||e.BINARY_ACK===t.type)i(t,n);else{var r=o(t);n([r])}},f(s.prototype),s.prototype.add=function(t){var n;if("string"==typeof t)n=a(t),e.BINARY_EVENT===n.type||e.BINARY_ACK===n.type?(this.reconstructor=new p(n),0===this.reconstructor.reconPack.attachments&&this.emit("decoded",n)):this.emit("decoded",n);else{if(!y(t)&&!t.base64)throw new Error("Unknown type: "+t);if(!this.reconstructor)throw new Error("got binary data when not reconstructing a packet");n=this.reconstructor.takeBinaryData(t),n&&(this.reconstructor=null,this.emit("decoded",n))}},s.prototype.destroy=function(){this.reconstructor&&this.reconstructor.finishedReconstruction()},p.prototype.takeBinaryData=function(t){if(this.buffers.push(t),this.buffers.length===this.reconPack.attachments){var e=d.reconstructPacket(this.reconPack,this.buffers);return this.finishedReconstruction(),e}return null},p.prototype.finishedReconstruction=function(){this.reconPack=null,this.buffers=[]}},function(t,e,n){function r(t){if(t)return o(t)}function o(t){for(var e in r.prototype)t[e]=r.prototype[e];return 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=this._callbacks["$"+t];if(!n)return this;if(1==arguments.length)return delete this._callbacks["$"+t],this;for(var r,o=0;o<n.length;o++)if(r=n[o],r===e||r.fn===e){n.splice(o,1);break}return this},r.prototype.emit=function(t){this._callbacks=this._callbacks||{};var e=[].slice.call(arguments,1),n=this._callbacks["$"+t];if(n){n=n.slice(0);for(var r=0,o=n.length;r<o;++r)n[r].apply(this,e)}return this},r.prototype.listeners=function(t){return this._callbacks=this._callbacks||{},this._callbacks["$"+t]||[]},r.prototype.hasListeners=function(t){return!!this.listeners(t).length}},function(t,e,n){(function(e){function r(t){if(!t||"object"!=typeof t)return!1;if(o(t)){for(var n=0,i=t.length;n<i;n++)if(r(t[n]))return!0;return!1}if("function"==typeof e.Buffer&&e.Buffer.isBuffer&&e.Buffer.isBuffer(t)||"function"==typeof e.ArrayBuffer&&t instanceof ArrayBuffer||s&&t instanceof Blob||a&&t instanceof File)return!0;if(t.toJSON&&"function"==typeof t.toJSON&&1===arguments.length)return r(t.toJSON(),!0);for(var c in t)if(Object.prototype.hasOwnProperty.call(t,c)&&r(t[c]))return!0;return!1}var o=n(10),i=Object.prototype.toString,s="function"==typeof e.Blob||"[object BlobConstructor]"===i.call(e.Blob),a="function"==typeof e.File||"[object FileConstructor]"===i.call(e.File);t.exports=r}).call(e,function(){return this}())},function(t,e){var n={}.toString;t.exports=Array.isArray||function(t){return"[object Array]"==n.call(t)}},function(t,e,n){(function(t){function r(t,e){if(!t)return t;if(s(t)){var n={_placeholder:!0,num:e.length};return e.push(t),n}if(i(t)){for(var o=new Array(t.length),a=0;a<t.length;a++)o[a]=r(t[a],e);return o}if("object"==typeof t&&!(t instanceof Date)){var o={};for(var c in t)o[c]=r(t[c],e);return o}return t}function o(t,e){if(!t)return t;if(t&&t._placeholder)return e[t.num];if(i(t))for(var n=0;n<t.length;n++)t[n]=o(t[n],e);else if("object"==typeof t)for(var r in t)t[r]=o(t[r],e);return t}var i=n(10),s=n(12),a=Object.prototype.toString,c="function"==typeof t.Blob||"[object BlobConstructor]"===a.call(t.Blob),p="function"==typeof t.File||"[object FileConstructor]"===a.call(t.File);e.deconstructPacket=function(t){var e=[],n=t.data,o=t;return o.data=r(n,e),o.attachments=e.length,{packet:o,buffers:e}},e.reconstructPacket=function(t,e){return t.data=o(t.data,e),t.attachments=void 0,t},e.removeBlobs=function(t,e){function n(t,a,u){if(!t)return t;if(c&&t instanceof Blob||p&&t instanceof File){r++;var h=new FileReader;h.onload=function(){u?u[a]=this.result:o=this.result,--r||e(o)},h.readAsArrayBuffer(t)}else if(i(t))for(var f=0;f<t.length;f++)n(t[f],f,t);else if("object"==typeof t&&!s(t))for(var l in t)n(t[l],l,t)}var r=0,o=t;n(o),r||e(o)}}).call(e,function(){return this}())},function(t,e){(function(e){function n(t){return e.Buffer&&e.Buffer.isBuffer(t)||e.ArrayBuffer&&t instanceof ArrayBuffer}t.exports=n}).call(e,function(){return this}())},function(t,e,n){"use strict";function r(t,e){if(!(this instanceof r))return new r(t,e);t&&"object"===("undefined"==typeof t?"undefined":o(t))&&(e=t,t=void 0),e=e||{},e.path=e.path||"/socket.io",this.nsps={},this.subs=[],this.opts=e,this.reconnection(e.reconnection!==!1),this.reconnectionAttempts(e.reconnectionAttempts||1/0),this.reconnectionDelay(e.reconnectionDelay||1e3),this.reconnectionDelayMax(e.reconnectionDelayMax||5e3),this.randomizationFactor(e.randomizationFactor||.5),this.backoff=new l({min:this.reconnectionDelay(),max:this.reconnectionDelayMax(),jitter:this.randomizationFactor()}),this.timeout(null==e.timeout?2e4:e.timeout),this.readyState="closed",this.uri=t,this.connecting=[],this.lastPing=null,this.encoding=!1,this.packetBuffer=[];var n=e.parser||c;this.encoder=new n.Encoder,this.decoder=new n.Decoder,this.autoConnect=e.autoConnect!==!1,this.autoConnect&&this.open()}var o="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},i=n(14),s=n(39),a=n(8),c=n(7),p=n(41),u=n(42),h=n(3)("socket.io-client:manager"),f=n(37),l=n(43),d=Object.prototype.hasOwnProperty;t.exports=r,r.prototype.emitAll=function(){this.emit.apply(this,arguments);for(var t in this.nsps)d.call(this.nsps,t)&&this.nsps[t].emit.apply(this.nsps[t],arguments)},r.prototype.updateSocketIds=function(){for(var t in this.nsps)d.call(this.nsps,t)&&(this.nsps[t].id=this.generateId(t))},r.prototype.generateId=function(t){return("/"===t?"":t+"#")+this.engine.id},a(r.prototype),r.prototype.reconnection=function(t){return arguments.length?(this._reconnection=!!t,this):this._reconnection},r.prototype.reconnectionAttempts=function(t){return arguments.length?(this._reconnectionAttempts=t,this):this._reconnectionAttempts},r.prototype.reconnectionDelay=function(t){return arguments.length?(this._reconnectionDelay=t,this.backoff&&this.backoff.setMin(t),this):this._reconnectionDelay},r.prototype.randomizationFactor=function(t){return arguments.length?(this._randomizationFactor=t,this.backoff&&this.backoff.setJitter(t),this):this._randomizationFactor},r.prototype.reconnectionDelayMax=function(t){return arguments.length?(this._reconnectionDelayMax=t,this.backoff&&this.backoff.setMax(t),this):this._reconnectionDelayMax},r.prototype.timeout=function(t){return arguments.length?(this._timeout=t,this):this._timeout},r.prototype.maybeReconnectOnOpen=function(){!this.reconnecting&&this._reconnection&&0===this.backoff.attempts&&this.reconnect()},r.prototype.open=r.prototype.connect=function(t,e){if(h("readyState %s",this.readyState),~this.readyState.indexOf("open"))return this;h("opening %s",this.uri),this.engine=i(this.uri,this.opts);var n=this.engine,r=this;this.readyState="opening",this.skipReconnect=!1;var o=p(n,"open",function(){r.onopen(),t&&t()}),s=p(n,"error",function(e){if(h("connect_error"),r.cleanup(),r.readyState="closed",r.emitAll("connect_error",e),t){var n=new Error("Connection error");n.data=e,t(n)}else r.maybeReconnectOnOpen()});if(!1!==this._timeout){var a=this._timeout;h("connect attempt will timeout after %d",a);var c=setTimeout(function(){h("connect attempt timed out after %d",a),o.destroy(),n.close(),n.emit("error","timeout"),r.emitAll("connect_timeout",a)},a);this.subs.push({destroy:function(){clearTimeout(c)}})}return this.subs.push(o),this.subs.push(s),this},r.prototype.onopen=function(){h("open"),this.cleanup(),this.readyState="open",this.emit("open");var t=this.engine;this.subs.push(p(t,"data",u(this,"ondata"))),this.subs.push(p(t,"ping",u(this,"onping"))),this.subs.push(p(t,"pong",u(this,"onpong"))),this.subs.push(p(t,"error",u(this,"onerror"))),this.subs.push(p(t,"close",u(this,"onclose"))),this.subs.push(p(this.decoder,"decoded",u(this,"ondecoded")))},r.prototype.onping=function(){this.lastPing=new Date,this.emitAll("ping")},r.prototype.onpong=function(){this.emitAll("pong",new Date-this.lastPing)},r.prototype.ondata=function(t){this.decoder.add(t)},r.prototype.ondecoded=function(t){this.emit("packet",t)},r.prototype.onerror=function(t){h("error",t),this.emitAll("error",t)},r.prototype.socket=function(t,e){function n(){~f(o.connecting,r)||o.connecting.push(r)}var r=this.nsps[t];if(!r){r=new s(this,t,e),this.nsps[t]=r;var o=this;r.on("connecting",n),r.on("connect",function(){r.id=o.generateId(t)}),this.autoConnect&&n()}return r},r.prototype.destroy=function(t){var e=f(this.connecting,t);~e&&this.connecting.splice(e,1),this.connecting.length||this.close()},r.prototype.packet=function(t){h("writing packet %j",t);var e=this;t.query&&0===t.type&&(t.nsp+="?"+t.query),e.encoding?e.packetBuffer.push(t):(e.encoding=!0,this.encoder.encode(t,function(n){for(var r=0;r<n.length;r++)e.engine.write(n[r],t.options);e.encoding=!1,e.processPacketQueue()}))},r.prototype.processPacketQueue=function(){if(this.packetBuffer.length>0&&!this.encoding){var t=this.packetBuffer.shift();this.packet(t)}},r.prototype.cleanup=function(){h("cleanup");for(var t=this.subs.length,e=0;e<t;e++){var n=this.subs.shift();n.destroy()}this.packetBuffer=[],this.encoding=!1,this.lastPing=null,this.decoder.destroy()},r.prototype.close=r.prototype.disconnect=function(){h("disconnect"),this.skipReconnect=!0,this.reconnecting=!1,"opening"===this.readyState&&this.cleanup(),this.backoff.reset(),this.readyState="closed",this.engine&&this.engine.close()},r.prototype.onclose=function(t){h("onclose"),this.cleanup(),this.backoff.reset(),this.readyState="closed",this.emit("close",t),this._reconnection&&!this.skipReconnect&&this.reconnect()},r.prototype.reconnect=function(){if(this.reconnecting||this.skipReconnect)return this;var t=this;if(this.backoff.attempts>=this._reconnectionAttempts)h("reconnect failed"),this.backoff.reset(),this.emitAll("reconnect_failed"),this.reconnecting=!1;else{var e=this.backoff.duration();h("will wait %dms before reconnect attempt",e),this.reconnecting=!0;var n=setTimeout(function(){t.skipReconnect||(h("attempting reconnect"),t.emitAll("reconnect_attempt",t.backoff.attempts),t.emitAll("reconnecting",t.backoff.attempts),t.skipReconnect||t.open(function(e){e?(h("reconnect attempt error"),t.reconnecting=!1,t.reconnect(),t.emitAll("reconnect_error",e.data)):(h("reconnect success"),t.onreconnect())}))},e);this.subs.push({destroy:function(){clearTimeout(n)}})}},r.prototype.onreconnect=function(){var t=this.backoff.attempts;this.reconnecting=!1,this.backoff.reset(),this.updateSocketIds(),this.emitAll("reconnect",t)}},function(t,e,n){t.exports=n(15)},function(t,e,n){t.exports=n(16),t.exports.parser=n(23)},function(t,e,n){(function(e){function r(t,n){if(!(this instanceof r))return new r(t,n);n=n||{},t&&"object"==typeof t&&(n=t,t=null),t?(t=u(t),n.hostname=t.host,n.secure="https"===t.protocol||"wss"===t.protocol,n.port=t.port,t.query&&(n.query=t.query)):n.host&&(n.hostname=u(n.host).host),this.secure=null!=n.secure?n.secure:e.location&&"https:"===location.protocol,n.hostname&&!n.port&&(n.port=this.secure?"443":"80"),this.agent=n.agent||!1,this.hostname=n.hostname||(e.location?location.hostname:"localhost"),this.port=n.port||(e.location&&location.port?location.port:this.secure?443:80),this.query=n.query||{},"string"==typeof this.query&&(this.query=f.decode(this.query)),this.upgrade=!1!==n.upgrade,this.path=(n.path||"/engine.io").replace(/\/$/,"")+"/",this.forceJSONP=!!n.forceJSONP,this.jsonp=!1!==n.jsonp,this.forceBase64=!!n.forceBase64,this.enablesXDR=!!n.enablesXDR,this.timestampParam=n.timestampParam||"t",this.timestampRequests=n.timestampRequests,this.transports=n.transports||["polling","websocket"],this.transportOptions=n.transportOptions||{},this.readyState="",this.writeBuffer=[],this.prevBufferLen=0,this.policyPort=n.policyPort||843,this.rememberUpgrade=n.rememberUpgrade||!1,this.binaryType=null,this.onlyBinaryUpgrades=n.onlyBinaryUpgrades,this.perMessageDeflate=!1!==n.perMessageDeflate&&(n.perMessageDeflate||{}),!0===this.perMessageDeflate&&(this.perMessageDeflate={}),this.perMessageDeflate&&null==this.perMessageDeflate.threshold&&(this.perMessageDeflate.threshold=1024),this.pfx=n.pfx||null,this.key=n.key||null,this.passphrase=n.passphrase||null,this.cert=n.cert||null,this.ca=n.ca||null,this.ciphers=n.ciphers||null,this.rejectUnauthorized=void 0===n.rejectUnauthorized||n.rejectUnauthorized,this.forceNode=!!n.forceNode;var o="object"==typeof e&&e;o.global===o&&(n.extraHeaders&&Object.keys(n.extraHeaders).length>0&&(this.extraHeaders=n.extraHeaders),n.localAddress&&(this.localAddress=n.localAddress)),this.id=null,this.upgrades=null,this.pingInterval=null,this.pingTimeout=null,this.pingIntervalTimer=null,this.pingTimeoutTimer=null,this.open()}function o(t){var e={};for(var n in t)t.hasOwnProperty(n)&&(e[n]=t[n]);return e}var i=n(17),s=n(8),a=n(3)("engine.io-client:socket"),c=n(37),p=n(23),u=n(2),h=n(38),f=n(31);t.exports=r,r.priorWebsocketSuccess=!1,s(r.prototype),r.protocol=p.protocol,r.Socket=r,r.Transport=n(22),r.transports=n(17),r.parser=n(23),r.prototype.createTransport=function(t){a('creating transport "%s"',t);var e=o(this.query);e.EIO=p.protocol,e.transport=t;var n=this.transportOptions[t]||{};this.id&&(e.sid=this.id);var r=new i[t]({query:e,socket:this,agent:n.agent||this.agent,hostname:n.hostname||this.hostname,port:n.port||this.port,secure:n.secure||this.secure,path:n.path||this.path,forceJSONP:n.forceJSONP||this.forceJSONP,jsonp:n.jsonp||this.jsonp,forceBase64:n.forceBase64||this.forceBase64,enablesXDR:n.enablesXDR||this.enablesXDR,timestampRequests:n.timestampRequests||this.timestampRequests,timestampParam:n.timestampParam||this.timestampParam,policyPort:n.policyPort||this.policyPort,pfx:n.pfx||this.pfx,key:n.key||this.key,passphrase:n.passphrase||this.passphrase,cert:n.cert||this.cert,ca:n.ca||this.ca,ciphers:n.ciphers||this.ciphers,rejectUnauthorized:n.rejectUnauthorized||this.rejectUnauthorized,perMessageDeflate:n.perMessageDeflate||this.perMessageDeflate,extraHeaders:n.extraHeaders||this.extraHeaders,forceNode:n.forceNode||this.forceNode,localAddress:n.localAddress||this.localAddress,requestTimeout:n.requestTimeout||this.requestTimeout,protocols:n.protocols||void 0});return r},r.prototype.open=function(){var t;if(this.rememberUpgrade&&r.priorWebsocketSuccess&&this.transports.indexOf("websocket")!==-1)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(n){return this.transports.shift(),void this.open()}t.open(),this.setTransport(t)},r.prototype.setTransport=function(t){a("setting transport %s",t.name);var e=this;this.transport&&(a("clearing existing transport %s",this.transport.name),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")})},r.prototype.probe=function(t){function e(){if(f.onlyBinaryUpgrades){var e=!this.supportsBinary&&f.transport.supportsBinary;h=h||e}h||(a('probe transport "%s" opened',t),u.send([{type:"ping",data:"probe"}]),u.once("packet",function(e){if(!h)if("pong"===e.type&&"probe"===e.data){if(a('probe transport "%s" pong',t),f.upgrading=!0,f.emit("upgrading",u),!u)return;r.priorWebsocketSuccess="websocket"===u.name,a('pausing current transport "%s"',f.transport.name),f.transport.pause(function(){h||"closed"!==f.readyState&&(a("changing transport and sending upgrade packet"),p(),f.setTransport(u),u.send([{type:"upgrade"}]),f.emit("upgrade",u),u=null,f.upgrading=!1,f.flush())})}else{a('probe transport "%s" failed',t);var n=new Error("probe error");n.transport=u.name,f.emit("upgradeError",n)}}))}function n(){h||(h=!0,p(),u.close(),u=null)}function o(e){var r=new Error("probe error: "+e);r.transport=u.name,n(),a('probe transport "%s" failed because of error: %s',t,e),f.emit("upgradeError",r)}function i(){o("transport closed")}function s(){o("socket closed")}function c(t){u&&t.name!==u.name&&(a('"%s" works - aborting "%s"',t.name,u.name),n())}function p(){u.removeListener("open",e),u.removeListener("error",o),u.removeListener("close",i),f.removeListener("close",s),f.removeListener("upgrading",c)}a('probing transport "%s"',t);var u=this.createTransport(t,{probe:1}),h=!1,f=this;r.priorWebsocketSuccess=!1,u.once("open",e),u.once("error",o),u.once("close",i),this.once("close",s),this.once("upgrading",c),u.open()},r.prototype.onOpen=function(){if(a("socket open"),this.readyState="open",r.priorWebsocketSuccess="websocket"===this.transport.name,this.emit("open"),this.flush(),"open"===this.readyState&&this.upgrade&&this.transport.pause){a("starting upgrade probes");for(var t=0,e=this.upgrades.length;t<e;t++)this.probe(this.upgrades[t])}},r.prototype.onPacket=function(t){if("opening"===this.readyState||"open"===this.readyState||"closing"===this.readyState)switch(a('socket receive: type "%s", data "%s"',t.type,t.data),this.emit("packet",t),this.emit("heartbeat"),t.type){case"open":this.onHandshake(h(t.data));break;case"pong":this.setPing(),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)}else a('packet received with socket readyState "%s"',this.readyState)},r.prototype.onHandshake=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.setPing(),this.removeListener("heartbeat",this.onHeartbeat),this.on("heartbeat",this.onHeartbeat))},r.prototype.onHeartbeat=function(t){clearTimeout(this.pingTimeoutTimer);var e=this;e.pingTimeoutTimer=setTimeout(function(){"closed"!==e.readyState&&e.onClose("ping timeout")},t||e.pingInterval+e.pingTimeout)},r.prototype.setPing=function(){var t=this;clearTimeout(t.pingIntervalTimer),t.pingIntervalTimer=setTimeout(function(){a("writing ping packet - expecting pong within %sms",t.pingTimeout),t.ping(),t.onHeartbeat(t.pingTimeout)},t.pingInterval)},r.prototype.ping=function(){var t=this;this.sendPacket("ping",function(){t.emit("ping")})},r.prototype.onDrain=function(){this.writeBuffer.splice(0,this.prevBufferLen),this.prevBufferLen=0,0===this.writeBuffer.length?this.emit("drain"):this.flush()},r.prototype.flush=function(){"closed"!==this.readyState&&this.transport.writable&&!this.upgrading&&this.writeBuffer.length&&(a("flushing %d packets in socket",this.writeBuffer.length),this.transport.send(this.writeBuffer),this.prevBufferLen=this.writeBuffer.length,this.emit("flush"))},r.prototype.write=r.prototype.send=function(t,e,n){return this.sendPacket("message",t,e,n),this},r.prototype.sendPacket=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||{},n.compress=!1!==n.compress;var o={type:t,data:e,options:n};this.emit("packetCreate",o),this.writeBuffer.push(o),r&&this.once("flush",r),this.flush()}},r.prototype.close=function(){function t(){r.onClose("forced close"),a("socket closing - telling transport to close"),r.transport.close()}function e(){r.removeListener("upgrade",e),r.removeListener("upgradeError",e),t()}function n(){r.once("upgrade",e),r.once("upgradeError",e)}if("opening"===this.readyState||"open"===this.readyState){this.readyState="closing";var r=this;this.writeBuffer.length?this.once("drain",function(){this.upgrading?n():t()}):this.upgrading?n():t()}return this},r.prototype.onError=function(t){a("socket error %j",t),r.priorWebsocketSuccess=!1,this.emit("error",t),this.onClose("transport error",t)},r.prototype.onClose=function(t,e){if("opening"===this.readyState||"open"===this.readyState||"closing"===this.readyState){a('socket close with reason: "%s"',t);var n=this;clearTimeout(this.pingIntervalTimer),clearTimeout(this.pingTimeoutTimer),this.transport.removeAllListeners("close"),this.transport.close(),this.transport.removeAllListeners(),this.readyState="closed",this.id=null,this.emit("close",t,e),n.writeBuffer=[],n.prevBufferLen=0}},r.prototype.filterUpgrades=function(t){for(var e=[],n=0,r=t.length;n<r;n++)~c(this.transports,t[n])&&e.push(t[n]);return e}}).call(e,function(){return this}())},function(t,e,n){(function(t){function r(e){var n,r=!1,a=!1,c=!1!==e.jsonp;if(t.location){var p="https:"===location.protocol,u=location.port;u||(u=p?443:80),r=e.hostname!==location.hostname||u!==e.port,a=e.secure!==p}if(e.xdomain=r,e.xscheme=a,n=new o(e),"open"in n&&!e.forceJSONP)return new i(e);if(!c)throw new Error("JSONP disabled");return new s(e)}var o=n(18),i=n(20),s=n(34),a=n(35);e.polling=r,e.websocket=a}).call(e,function(){return this}())},function(t,e,n){(function(e){var r=n(19);t.exports=function(t){var n=t.xdomain,o=t.xscheme,i=t.enablesXDR;try{if("undefined"!=typeof XMLHttpRequest&&(!n||r))return new XMLHttpRequest}catch(s){}try{if("undefined"!=typeof XDomainRequest&&!o&&i)return new XDomainRequest}catch(s){}if(!n)try{
0 ignored issues
show
Bug introduced by
The variable m is changed as part of the for loop for example by ++m on line 1. Only the value of the last iteration will be visible in this function if it is called after the loop.
Loading history...
Complexity Best Practice introduced by
There is no return statement if e is false. Are you sure this is correct? If so, consider adding return; explicitly.

This check looks for functions where a return statement is found in some execution paths, but not in all.

Consider this little piece of code

function isBig(a) {
    if (a > 5000) {
        return "yes";
    }
}

console.log(isBig(5001)); //returns yes
console.log(isBig(42)); //returns undefined

The function isBig will only return a specific value when its parameter is bigger than 5000. In any other case, it will implicitly return undefined.

This behaviour may not be what you had intended. In any case, you can add a return undefined to the other execution path to make the return value explicit.

Loading history...
Coding Style introduced by
Consider using undefined instead of void(0). It is equivalent and more straightforward to read.
Loading history...
Bug introduced by
The variable define seems to be never declared. If this is a global, consider adding a /** global: define */ comment.

This checks looks for references to variables that have not been declared. This is most likey a typographical error or a variable has been renamed.

To learn more about declaring variables in Javascript, see the MDN.

Loading history...
Coding Style introduced by
As per coding-style, switch statements should have a default case.
Loading history...
Bug introduced by
The variable File seems to be never declared. If this is a global, consider adding a /** global: File */ comment.

This checks looks for references to variables that have not been declared. This is most likey a typographical error or a variable has been renamed.

To learn more about declaring variables in Javascript, see the MDN.

Loading history...
Coding Style Best Practice introduced by
Curly braces around statements make for more readable code and help prevent bugs when you add further statements.

Consider adding curly braces around all statements when they are executed conditionally. This is optional if there is only one statement, but leaving them out can lead to unexpected behaviour if another statement is added later.

Consider:

if (a > 0)
    b = 42;

If you or someone else later decides to put another statement in, only the first statement will be executed.

if (a > 0)
    console.log("a > 0");
    b = 42;

In this case the statement b = 42 will always be executed, while the logging statement will be executed conditionally.

if (a > 0) {
    console.log("a > 0");
    b = 42;
}

ensures that the proper code will be executed conditionally no matter how many statements are added or removed.

Loading history...
Bug introduced by
The variable chrome seems to be never declared. If this is a global, consider adding a /** global: chrome */ comment.

This checks looks for references to variables that have not been declared. This is most likey a typographical error or a variable has been renamed.

To learn more about declaring variables in Javascript, see the MDN.

Loading history...
Complexity Best Practice introduced by
There is no return statement if t = String(t), !(t.length > 100) is false. Are you sure this is correct? If so, consider adding return; explicitly.

This check looks for functions where a return statement is found in some execution paths, but not in all.

Consider this little piece of code

function isBig(a) {
    if (a > 5000) {
        return "yes";
    }
}

console.log(isBig(5001)); //returns yes
console.log(isBig(42)); //returns undefined

The function isBig will only return a specific value when its parameter is bigger than 5000. In any other case, it will implicitly return undefined.

This behaviour may not be what you had intended. In any case, you can add a return undefined to the other execution path to make the return value explicit.

Loading history...
Complexity Best Practice introduced by
There is no return statement if "object" == typeof t && !s(t) is false. Are you sure this is correct? If so, consider adding return; explicitly.

This check looks for functions where a return statement is found in some execution paths, but not in all.

Consider this little piece of code

function isBig(a) {
    if (a > 5000) {
        return "yes";
    }
}

console.log(isBig(5001)); //returns yes
console.log(isBig(42)); //returns undefined

The function isBig will only return a specific value when its parameter is bigger than 5000. In any other case, it will implicitly return undefined.

This behaviour may not be what you had intended. In any case, you can add a return undefined to the other execution path to make the return value explicit.

Loading history...
Bug introduced by
The variable XMLHttpRequest seems to be never declared. If this is a global, consider adding a /** global: XMLHttpRequest */ comment.

This checks looks for references to variables that have not been declared. This is most likey a typographical error or a variable has been renamed.

To learn more about declaring variables in Javascript, see the MDN.

Loading history...
Bug introduced by
The variable Symbol seems to be never declared. If this is a global, consider adding a /** global: Symbol */ comment.

This checks looks for references to variables that have not been declared. This is most likey a typographical error or a variable has been renamed.

To learn more about declaring variables in Javascript, see the MDN.

Loading history...
Bug introduced by
The variable XDomainRequest seems to be never declared. If this is a global, consider adding a /** global: XDomainRequest */ comment.

This checks looks for references to variables that have not been declared. This is most likey a typographical error or a variable has been renamed.

To learn more about declaring variables in Javascript, see the MDN.

Loading history...
Coding Style Best Practice introduced by
By convention, constructors like r should be capitalized.
Loading history...
Complexity Best Practice introduced by
There is no return statement if t is false. Are you sure this is correct? If so, consider adding return; explicitly.

This check looks for functions where a return statement is found in some execution paths, but not in all.

Consider this little piece of code

function isBig(a) {
    if (a > 5000) {
        return "yes";
    }
}

console.log(isBig(5001)); //returns yes
console.log(isBig(42)); //returns undefined

The function isBig will only return a specific value when its parameter is bigger than 5000. In any other case, it will implicitly return undefined.

This behaviour may not be what you had intended. In any case, you can add a return undefined to the other execution path to make the return value explicit.

Loading history...
Bug introduced by
The variable p seems to not be initialized for all possible execution paths.
Loading history...
Coding Style Best Practice introduced by
By convention, constructors like i should be capitalized.
Loading history...
Complexity Best Practice introduced by
There is no return statement if !(t < e) is false. Are you sure this is correct? If so, consider adding return; explicitly.

This check looks for functions where a return statement is found in some execution paths, but not in all.

Consider this little piece of code

function isBig(a) {
    if (a > 5000) {
        return "yes";
    }
}

console.log(isBig(5001)); //returns yes
console.log(isBig(42)); //returns undefined

The function isBig will only return a specific value when its parameter is bigger than 5000. In any other case, it will implicitly return undefined.

This behaviour may not be what you had intended. In any case, you can add a return undefined to the other execution path to make the return value explicit.

Loading history...
Best Practice introduced by
There is no return statement in this branch, but you do return something in other branches. Did you maybe miss it? If you do not want to return anything, consider adding return undefined; explicitly.
Loading history...
Bug introduced by
The variable navigator seems to be never declared. If this is a global, consider adding a /** global: navigator */ comment.

This checks looks for references to variables that have not been declared. This is most likey a typographical error or a variable has been renamed.

To learn more about declaring variables in Javascript, see the MDN.

Loading history...
Unused Code introduced by
The parameter n is not used and could be removed.

This check looks for parameters in functions that are not used in the function body and are not followed by other parameters which are used inside the function.

Loading history...
Bug introduced by
The variable FileReader seems to be never declared. If this is a global, consider adding a /** global: FileReader */ comment.

This checks looks for references to variables that have not been declared. This is most likey a typographical error or a variable has been renamed.

To learn more about declaring variables in Javascript, see the MDN.

Loading history...
Bug introduced by
The variable m does not seem to be initialized in case the for loop on line 1 is not entered. Are you sure this can never be the case?
Loading history...
Unused Code introduced by
The parameter t is not used and could be removed.

This check looks for parameters in functions that are not used in the function body and are not followed by other parameters which are used inside the function.

Loading history...
Unused Code introduced by
The parameter e is not used and could be removed.

This check looks for parameters in functions that are not used in the function body and are not followed by other parameters which are used inside the function.

Loading history...
Best Practice introduced by
If you intend to check if the variable setTimeout is declared in the current environment, consider using typeof setTimeout === "undefined" instead. This is safe if the variable is not actually declared.
Loading history...
Bug introduced by
The variable d seems to not be initialized for all possible execution paths.
Loading history...
introduced by
The for loop does not have a body. Maybe you have misplaced a semicolon. If you do wish to have a loop without a body, use an empty body {}.
Loading history...
Coding Style Best Practice introduced by
By convention, constructors like l should be capitalized.
Loading history...
Comprehensibility Naming Best Practice introduced by
The variable o already seems to be declared on line 1. Consider using another variable name or omitting the var keyword.

This check looks for variables that are declared in multiple lines. There may be several reasons for this.

In the simplest case the variable name was reused by mistake. This may lead to very hard to locate bugs.

If you want to reuse a variable for another purpose, consider declaring it at or near the top of your function and just assigning to it subsequently so it is always declared.

Loading history...
Complexity Best Practice introduced by
There is no return statement if !n is false. Are you sure this is correct? If so, consider adding return; explicitly.

This check looks for functions where a return statement is found in some execution paths, but not in all.

Consider this little piece of code

function isBig(a) {
    if (a > 5000) {
        return "yes";
    }
}

console.log(isBig(5001)); //returns yes
console.log(isBig(42)); //returns undefined

The function isBig will only return a specific value when its parameter is bigger than 5000. In any other case, it will implicitly return undefined.

This behaviour may not be what you had intended. In any case, you can add a return undefined to the other execution path to make the return value explicit.

Loading history...
Bug introduced by
The variable d is changed as part of the for loop for example by [] on line 1. Only the value of the last iteration will be visible in this function if it is called after the loop.
Loading history...
Bug introduced by
The variable d does not seem to be initialized in case the for loop on line 1 is not entered. Are you sure this can never be the case?
Loading history...
Complexity introduced by
A for in loop automatically includes the property of any prototype object, consider checking the key using hasOwnProperty.

When iterating over the keys of an object, this includes not only the keys of the object, but also keys contained in the prototype of that object. It is generally a best practice to check for these keys specifically:

var someObject;
for (var key in someObject) {
    if ( ! someObject.hasOwnProperty(key)) {
        continue; // Skip keys from the prototype.
    }

    doSomethingWith(key);
}
Loading history...
Coding Style Best Practice introduced by
By convention, constructors like s should be capitalized.
Loading history...
Comprehensibility introduced by
Usage of the sequence operator is discouraged, since it may lead to obfuscated code.

The sequence or comma operator allows the inclusion of multiple expressions where only is permitted. The result of the sequence is the value of the last expression.

This operator is most often used in for statements.

Used in another places it can make code hard to read, especially when people do not realize it even exists as a seperate operator.

This check looks for usage of the sequence operator in locations where it is not necessary and could be replaced by a series of expressions or statements.

var a,b,c;

a = 1, b = 1,  c= 3;

could just as well be written as:

var a,b,c;

a = 1;
b = 1;
c = 3;

To learn more about the sequence operator, please refer to the MDN.

Loading history...
Bug introduced by
The variable Blob seems to be never declared. If this is a global, consider adding a /** global: Blob */ comment.

This checks looks for references to variables that have not been declared. This is most likey a typographical error or a variable has been renamed.

To learn more about declaring variables in Javascript, see the MDN.

Loading history...
Comprehensibility Naming Best Practice introduced by
The variable i already seems to be declared on line 1. Consider using another variable name or omitting the var keyword.

This check looks for variables that are declared in multiple lines. There may be several reasons for this.

In the simplest case the variable name was reused by mistake. This may lead to very hard to locate bugs.

If you want to reuse a variable for another purpose, consider declaring it at or near the top of your function and just assigning to it subsequently so it is always declared.

Loading history...
Coding Style Best Practice introduced by
By convention, constructors like o should be capitalized.
Loading history...
Coding Style Best Practice introduced by
By convention, constructors like c should be capitalized.
Loading history...
Coding Style Best Practice introduced by
By convention, constructors like p should be capitalized.
Loading history...
Bug introduced by
The variable u does not seem to be initialized in case u === n || !u && setTimeout on line 1 is false. Are you sure this can never be the case?
Loading history...
Unused Code introduced by
This return has no effect and can be removed.
Loading history...
Best Practice introduced by
If you intend to check if the variable clearTimeout is declared in the current environment, consider using typeof clearTimeout === "undefined" instead. This is safe if the variable is not actually declared.
Loading history...
Coding Style Comprehensibility Best Practice introduced by
Empty catch clauses should be used with caution; consider adding a comment why this is needed.
Loading history...
Bug introduced by
The variable h does not seem to be initialized in case h === r || !h && clearTimeout on line 1 is false. Are you sure this can never be the case?
Loading history...
2
return new(e[["Active"].concat("Object").join("X")])("Microsoft.XMLHTTP")}catch(s){}}}).call(e,function(){return this}())},function(t,e){try{t.exports="undefined"!=typeof XMLHttpRequest&&"withCredentials"in new XMLHttpRequest}catch(n){t.exports=!1}},function(t,e,n){(function(e){function r(){}function o(t){if(c.call(this,t),this.requestTimeout=t.requestTimeout,this.extraHeaders=t.extraHeaders,e.location){var n="https:"===location.protocol,r=location.port;r||(r=n?443:80),this.xd=t.hostname!==e.location.hostname||r!==t.port,this.xs=t.secure!==n}}function i(t){this.method=t.method||"GET",this.uri=t.uri,this.xd=!!t.xd,this.xs=!!t.xs,this.async=!1!==t.async,this.data=void 0!==t.data?t.data:null,this.agent=t.agent,this.isBinary=t.isBinary,this.supportsBinary=t.supportsBinary,this.enablesXDR=t.enablesXDR,this.requestTimeout=t.requestTimeout,this.pfx=t.pfx,this.key=t.key,this.passphrase=t.passphrase,this.cert=t.cert,this.ca=t.ca,this.ciphers=t.ciphers,this.rejectUnauthorized=t.rejectUnauthorized,this.extraHeaders=t.extraHeaders,this.create()}function s(){for(var t in i.requests)i.requests.hasOwnProperty(t)&&i.requests[t].abort()}var a=n(18),c=n(21),p=n(8),u=n(32),h=n(3)("engine.io-client:polling-xhr");t.exports=o,t.exports.Request=i,u(o,c),o.prototype.supportsBinary=!0,o.prototype.request=function(t){return t=t||{},t.uri=this.uri(),t.xd=this.xd,t.xs=this.xs,t.agent=this.agent||!1,t.supportsBinary=this.supportsBinary,t.enablesXDR=this.enablesXDR,t.pfx=this.pfx,t.key=this.key,t.passphrase=this.passphrase,t.cert=this.cert,t.ca=this.ca,t.ciphers=this.ciphers,t.rejectUnauthorized=this.rejectUnauthorized,t.requestTimeout=this.requestTimeout,t.extraHeaders=this.extraHeaders,new i(t)},o.prototype.doWrite=function(t,e){var n="string"!=typeof t&&void 0!==t,r=this.request({method:"POST",data:t,isBinary:n}),o=this;r.on("success",e),r.on("error",function(t){o.onError("xhr post error",t)}),this.sendXhr=r},o.prototype.doPoll=function(){h("xhr poll");var t=this.request(),e=this;t.on("data",function(t){e.onData(t)}),t.on("error",function(t){e.onError("xhr poll error",t)}),this.pollXhr=t},p(i.prototype),i.prototype.create=function(){var t={agent:this.agent,xdomain:this.xd,xscheme:this.xs,enablesXDR:this.enablesXDR};t.pfx=this.pfx,t.key=this.key,t.passphrase=this.passphrase,t.cert=this.cert,t.ca=this.ca,t.ciphers=this.ciphers,t.rejectUnauthorized=this.rejectUnauthorized;var n=this.xhr=new a(t),r=this;try{h("xhr open %s: %s",this.method,this.uri),n.open(this.method,this.uri,this.async);try{if(this.extraHeaders){n.setDisableHeaderCheck&&n.setDisableHeaderCheck(!0);for(var o in this.extraHeaders)this.extraHeaders.hasOwnProperty(o)&&n.setRequestHeader(o,this.extraHeaders[o])}}catch(s){}if("POST"===this.method)try{this.isBinary?n.setRequestHeader("Content-type","application/octet-stream"):n.setRequestHeader("Content-type","text/plain;charset=UTF-8")}catch(s){}try{n.setRequestHeader("Accept","*/*")}catch(s){}"withCredentials"in n&&(n.withCredentials=!0),this.requestTimeout&&(n.timeout=this.requestTimeout),this.hasXDR()?(n.onload=function(){r.onLoad()},n.onerror=function(){r.onError(n.responseText)}):n.onreadystatechange=function(){if(2===n.readyState){var t;try{t=n.getResponseHeader("Content-Type")}catch(e){}"application/octet-stream"===t&&(n.responseType="arraybuffer")}4===n.readyState&&(200===n.status||1223===n.status?r.onLoad():setTimeout(function(){r.onError(n.status)},0))},h("xhr data %s",this.data),n.send(this.data)}catch(s){return void setTimeout(function(){r.onError(s)},0)}e.document&&(this.index=i.requestsCount++,i.requests[this.index]=this)},i.prototype.onSuccess=function(){this.emit("success"),this.cleanup()},i.prototype.onData=function(t){this.emit("data",t),this.onSuccess()},i.prototype.onError=function(t){this.emit("error",t),this.cleanup(!0)},i.prototype.cleanup=function(t){if("undefined"!=typeof this.xhr&&null!==this.xhr){if(this.hasXDR()?this.xhr.onload=this.xhr.onerror=r:this.xhr.onreadystatechange=r,t)try{this.xhr.abort()}catch(n){}e.document&&delete i.requests[this.index],this.xhr=null}},i.prototype.onLoad=function(){var t;try{var e;try{e=this.xhr.getResponseHeader("Content-Type")}catch(n){}t="application/octet-stream"===e?this.xhr.response||this.xhr.responseText:this.xhr.responseText}catch(n){this.onError(n)}null!=t&&this.onData(t)},i.prototype.hasXDR=function(){return"undefined"!=typeof e.XDomainRequest&&!this.xs&&this.enablesXDR},i.prototype.abort=function(){this.cleanup()},i.requestsCount=0,i.requests={},e.document&&(e.attachEvent?e.attachEvent("onunload",s):e.addEventListener&&e.addEventListener("beforeunload",s,!1))}).call(e,function(){return this}())},function(t,e,n){function r(t){var e=t&&t.forceBase64;u&&!e||(this.supportsBinary=!1),o.call(this,t)}var o=n(22),i=n(31),s=n(23),a=n(32),c=n(33),p=n(3)("engine.io-client:polling");t.exports=r;var u=function(){var t=n(18),e=new t({xdomain:!1});return null!=e.responseType}();a(r,o),r.prototype.name="polling",r.prototype.doOpen=function(){this.poll()},r.prototype.pause=function(t){function e(){p("paused"),n.readyState="paused",t()}var n=this;if(this.readyState="pausing",this.polling||!this.writable){var r=0;this.polling&&(p("we are currently polling - waiting to pause"),r++,this.once("pollComplete",function(){p("pre-pause polling complete"),--r||e()})),this.writable||(p("we are currently writing - waiting to pause"),r++,this.once("drain",function(){p("pre-pause writing complete"),--r||e()}))}else e()},r.prototype.poll=function(){p("polling"),this.polling=!0,this.doPoll(),this.emit("poll")},r.prototype.onData=function(t){var e=this;p("polling got data %s",t);var n=function(t,n,r){return"opening"===e.readyState&&e.onOpen(),"close"===t.type?(e.onClose(),!1):void e.onPacket(t)};s.decodePayload(t,this.socket.binaryType,n),"closed"!==this.readyState&&(this.polling=!1,this.emit("pollComplete"),"open"===this.readyState?this.poll():p('ignoring poll - transport state "%s"',this.readyState))},r.prototype.doClose=function(){function t(){p("writing close packet"),e.write([{type:"close"}])}var e=this;"open"===this.readyState?(p("transport open - closing"),t()):(p("transport not open - deferring close"),this.once("open",t))},r.prototype.write=function(t){var e=this;this.writable=!1;var n=function(){e.writable=!0,e.emit("drain")};s.encodePayload(t,this.supportsBinary,function(t){e.doWrite(t,n)})},r.prototype.uri=function(){var t=this.query||{},e=this.secure?"https":"http",n="";!1!==this.timestampRequests&&(t[this.timestampParam]=c()),this.supportsBinary||t.sid||(t.b64=1),t=i.encode(t),this.port&&("https"===e&&443!==Number(this.port)||"http"===e&&80!==Number(this.port))&&(n=":"+this.port),t.length&&(t="?"+t);var r=this.hostname.indexOf(":")!==-1;return e+"://"+(r?"["+this.hostname+"]":this.hostname)+n+this.path+t}},function(t,e,n){function r(t){this.path=t.path,this.hostname=t.hostname,this.port=t.port,this.secure=t.secure,this.query=t.query,this.timestampParam=t.timestampParam,this.timestampRequests=t.timestampRequests,this.readyState="",this.agent=t.agent||!1,this.socket=t.socket,this.enablesXDR=t.enablesXDR,this.pfx=t.pfx,this.key=t.key,this.passphrase=t.passphrase,this.cert=t.cert,this.ca=t.ca,this.ciphers=t.ciphers,this.rejectUnauthorized=t.rejectUnauthorized,this.forceNode=t.forceNode,this.extraHeaders=t.extraHeaders,this.localAddress=t.localAddress}var o=n(23),i=n(8);t.exports=r,i(r.prototype),r.prototype.onError=function(t,e){var n=new Error(t);return n.type="TransportError",n.description=e,this.emit("error",n),this},r.prototype.open=function(){return"closed"!==this.readyState&&""!==this.readyState||(this.readyState="opening",this.doOpen()),this},r.prototype.close=function(){return"opening"!==this.readyState&&"open"!==this.readyState||(this.doClose(),this.onClose()),this},r.prototype.send=function(t){if("open"!==this.readyState)throw new Error("Transport not open");this.write(t)},r.prototype.onOpen=function(){this.readyState="open",this.writable=!0,this.emit("open")},r.prototype.onData=function(t){var e=o.decodePacket(t,this.socket.binaryType);this.onPacket(e)},r.prototype.onPacket=function(t){this.emit("packet",t)},r.prototype.onClose=function(){this.readyState="closed",this.emit("close")}},function(t,e,n){(function(t){function r(t,n){var r="b"+e.packets[t.type]+t.data.data;return n(r)}function o(t,n,r){if(!n)return e.encodeBase64Packet(t,r);var o=t.data,i=new Uint8Array(o),s=new Uint8Array(1+o.byteLength);s[0]=v[t.type];for(var a=0;a<i.length;a++)s[a+1]=i[a];return r(s.buffer)}function i(t,n,r){if(!n)return e.encodeBase64Packet(t,r);var o=new FileReader;return o.onload=function(){t.data=o.result,e.encodePacket(t,n,!0,r)},o.readAsArrayBuffer(t.data)}function s(t,n,r){if(!n)return e.encodeBase64Packet(t,r);if(g)return i(t,n,r);var o=new Uint8Array(1);o[0]=v[t.type];var s=new k([o.buffer,t.data]);return r(s)}function a(t){try{t=d.decode(t,{strict:!1})}catch(e){return!1}return t}function c(t,e,n){for(var r=new Array(t.length),o=l(t.length,n),i=function(t,n,o){e(n,function(e,n){r[t]=n,o(e,r)})},s=0;s<t.length;s++)i(s,t[s],o)}var p,u=n(24),h=n(9),f=n(25),l=n(26),d=n(27);t&&t.ArrayBuffer&&(p=n(29));var y="undefined"!=typeof navigator&&/Android/i.test(navigator.userAgent),m="undefined"!=typeof navigator&&/PhantomJS/i.test(navigator.userAgent),g=y||m;e.protocol=3;var v=e.packets={open:0,close:1,ping:2,pong:3,message:4,upgrade:5,noop:6},b=u(v),w={type:"error",data:"parser error"},k=n(30);e.encodePacket=function(e,n,i,a){"function"==typeof n&&(a=n,n=!1),"function"==typeof i&&(a=i,i=null);var c=void 0===e.data?void 0:e.data.buffer||e.data;if(t.ArrayBuffer&&c instanceof ArrayBuffer)return o(e,n,a);if(k&&c instanceof t.Blob)return s(e,n,a);if(c&&c.base64)return r(e,a);var p=v[e.type];return void 0!==e.data&&(p+=i?d.encode(String(e.data),{strict:!1}):String(e.data)),a(""+p)},e.encodeBase64Packet=function(n,r){var o="b"+e.packets[n.type];if(k&&n.data instanceof t.Blob){var i=new FileReader;return i.onload=function(){var t=i.result.split(",")[1];r(o+t)},i.readAsDataURL(n.data)}var s;try{s=String.fromCharCode.apply(null,new Uint8Array(n.data))}catch(a){for(var c=new Uint8Array(n.data),p=new Array(c.length),u=0;u<c.length;u++)p[u]=c[u];s=String.fromCharCode.apply(null,p)}return o+=t.btoa(s),r(o)},e.decodePacket=function(t,n,r){if(void 0===t)return w;if("string"==typeof t){if("b"===t.charAt(0))return e.decodeBase64Packet(t.substr(1),n);if(r&&(t=a(t),t===!1))return w;var o=t.charAt(0);return Number(o)==o&&b[o]?t.length>1?{type:b[o],data:t.substring(1)}:{type:b[o]}:w}var i=new Uint8Array(t),o=i[0],s=f(t,1);return k&&"blob"===n&&(s=new k([s])),{type:b[o],data:s}},e.decodeBase64Packet=function(t,e){var n=b[t.charAt(0)];if(!p)return{type:n,data:{base64:!0,data:t.substr(1)}};var r=p.decode(t.substr(1));return"blob"===e&&k&&(r=new k([r])),{type:n,data:r}},e.encodePayload=function(t,n,r){function o(t){return t.length+":"+t}function i(t,r){e.encodePacket(t,!!s&&n,!1,function(t){r(null,o(t))})}"function"==typeof n&&(r=n,n=null);var s=h(t);return n&&s?k&&!g?e.encodePayloadAsBlob(t,r):e.encodePayloadAsArrayBuffer(t,r):t.length?void c(t,i,function(t,e){return r(e.join(""))}):r("0:")},e.decodePayload=function(t,n,r){if("string"!=typeof t)return e.decodePayloadAsBinary(t,n,r);"function"==typeof n&&(r=n,n=null);var o;if(""===t)return r(w,0,1);for(var i,s,a="",c=0,p=t.length;c<p;c++){var u=t.charAt(c);if(":"===u){if(""===a||a!=(i=Number(a)))return r(w,0,1);if(s=t.substr(c+1,i),a!=s.length)return r(w,0,1);if(s.length){if(o=e.decodePacket(s,n,!1),w.type===o.type&&w.data===o.data)return r(w,0,1);var h=r(o,c+i,p);if(!1===h)return}c+=i,a=""}else a+=u}return""!==a?r(w,0,1):void 0},e.encodePayloadAsArrayBuffer=function(t,n){function r(t,n){e.encodePacket(t,!0,!0,function(t){return n(null,t)})}return t.length?void c(t,r,function(t,e){var r=e.reduce(function(t,e){var n;return n="string"==typeof e?e.length:e.byteLength,t+n.toString().length+n+2},0),o=new Uint8Array(r),i=0;return e.forEach(function(t){var e="string"==typeof t,n=t;if(e){for(var r=new Uint8Array(t.length),s=0;s<t.length;s++)r[s]=t.charCodeAt(s);n=r.buffer}e?o[i++]=0:o[i++]=1;for(var a=n.byteLength.toString(),s=0;s<a.length;s++)o[i++]=parseInt(a[s]);o[i++]=255;for(var r=new Uint8Array(n),s=0;s<r.length;s++)o[i++]=r[s]}),n(o.buffer)}):n(new ArrayBuffer(0))},e.encodePayloadAsBlob=function(t,n){function r(t,n){e.encodePacket(t,!0,!0,function(t){var e=new Uint8Array(1);if(e[0]=1,"string"==typeof t){for(var r=new Uint8Array(t.length),o=0;o<t.length;o++)r[o]=t.charCodeAt(o);t=r.buffer,e[0]=0}for(var i=t instanceof ArrayBuffer?t.byteLength:t.size,s=i.toString(),a=new Uint8Array(s.length+1),o=0;o<s.length;o++)a[o]=parseInt(s[o]);if(a[s.length]=255,k){var c=new k([e.buffer,a.buffer,t]);n(null,c)}})}c(t,r,function(t,e){return n(new k(e))})},e.decodePayloadAsBinary=function(t,n,r){"function"==typeof n&&(r=n,n=null);for(var o=t,i=[];o.byteLength>0;){for(var s=new Uint8Array(o),a=0===s[0],c="",p=1;255!==s[p];p++){if(c.length>310)return r(w,0,1);c+=s[p]}o=f(o,2+c.length),c=parseInt(c);var u=f(o,0,c);if(a)try{u=String.fromCharCode.apply(null,new Uint8Array(u))}catch(h){var l=new Uint8Array(u);u="";for(var p=0;p<l.length;p++)u+=String.fromCharCode(l[p])}i.push(u),o=f(o,c)}var d=i.length;i.forEach(function(t,o){r(e.decodePacket(t,n,!0),o,d)})}}).call(e,function(){return this}())},function(t,e){t.exports=Object.keys||function(t){var e=[],n=Object.prototype.hasOwnProperty;for(var r in t)n.call(t,r)&&e.push(r);return e}},function(t,e){t.exports=function(t,e,n){var r=t.byteLength;if(e=e||0,n=n||r,t.slice)return t.slice(e,n);if(e<0&&(e+=r),n<0&&(n+=r),n>r&&(n=r),e>=r||e>=n||0===r)return new ArrayBuffer(0);for(var o=new Uint8Array(t),i=new Uint8Array(n-e),s=e,a=0;s<n;s++,a++)i[a]=o[s];return i.buffer}},function(t,e){function n(t,e,n){function o(t,r){if(o.count<=0)throw new Error("after called too many times");--o.count,t?(i=!0,e(t),e=n):0!==o.count||i||e(null,r)}var i=!1;return n=n||r,o.count=t,0===t?e():o}function r(){}t.exports=n},function(t,e,n){var r;(function(t,o){!function(i){function s(t){for(var e,n,r=[],o=0,i=t.length;o<i;)e=t.charCodeAt(o++),e>=55296&&e<=56319&&o<i?(n=t.charCodeAt(o++),56320==(64512&n)?r.push(((1023&e)<<10)+(1023&n)+65536):(r.push(e),o--)):r.push(e);return r}function a(t){for(var e,n=t.length,r=-1,o="";++r<n;)e=t[r],e>65535&&(e-=65536,o+=w(e>>>10&1023|55296),e=56320|1023&e),o+=w(e);return o}function c(t,e){if(t>=55296&&t<=57343){if(e)throw Error("Lone surrogate U+"+t.toString(16).toUpperCase()+" is not a scalar value");return!1}return!0}function p(t,e){return w(t>>e&63|128)}function u(t,e){if(0==(4294967168&t))return w(t);var n="";return 0==(4294965248&t)?n=w(t>>6&31|192):0==(4294901760&t)?(c(t,e)||(t=65533),n=w(t>>12&15|224),n+=p(t,6)):0==(4292870144&t)&&(n=w(t>>18&7|240),n+=p(t,12),n+=p(t,6)),n+=w(63&t|128)}function h(t,e){e=e||{};for(var n,r=!1!==e.strict,o=s(t),i=o.length,a=-1,c="";++a<i;)n=o[a],c+=u(n,r);return c}function f(){if(b>=v)throw Error("Invalid byte index");var t=255&g[b];if(b++,128==(192&t))return 63&t;throw Error("Invalid continuation byte")}function l(t){var e,n,r,o,i;if(b>v)throw Error("Invalid byte index");if(b==v)return!1;if(e=255&g[b],b++,0==(128&e))return e;if(192==(224&e)){if(n=f(),i=(31&e)<<6|n,i>=128)return i;throw Error("Invalid continuation byte")}if(224==(240&e)){if(n=f(),r=f(),i=(15&e)<<12|n<<6|r,i>=2048)return c(i,t)?i:65533;throw Error("Invalid continuation byte")}if(240==(248&e)&&(n=f(),r=f(),o=f(),i=(7&e)<<18|n<<12|r<<6|o,i>=65536&&i<=1114111))return i;throw Error("Invalid UTF-8 detected")}function d(t,e){e=e||{};var n=!1!==e.strict;g=s(t),v=g.length,b=0;for(var r,o=[];(r=l(n))!==!1;)o.push(r);return a(o)}var y="object"==typeof e&&e,m=("object"==typeof t&&t&&t.exports==y&&t,"object"==typeof o&&o);m.global!==m&&m.window!==m||(i=m);var g,v,b,w=String.fromCharCode,k={version:"2.1.2",encode:h,decode:d};r=function(){return k}.call(e,n,e,t),!(void 0!==r&&(t.exports=r))}(this)}).call(e,n(28)(t),function(){return this}())},function(t,e){t.exports=function(t){return t.webpackPolyfill||(t.deprecate=function(){},t.paths=[],t.children=[],t.webpackPolyfill=1),t}},function(t,e){!function(){"use strict";for(var t="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/",n=new Uint8Array(256),r=0;r<t.length;r++)n[t.charCodeAt(r)]=r;e.encode=function(e){var n,r=new Uint8Array(e),o=r.length,i="";for(n=0;n<o;n+=3)i+=t[r[n]>>2],i+=t[(3&r[n])<<4|r[n+1]>>4],i+=t[(15&r[n+1])<<2|r[n+2]>>6],i+=t[63&r[n+2]];return o%3===2?i=i.substring(0,i.length-1)+"=":o%3===1&&(i=i.substring(0,i.length-2)+"=="),i},e.decode=function(t){var e,r,o,i,s,a=.75*t.length,c=t.length,p=0;"="===t[t.length-1]&&(a--,"="===t[t.length-2]&&a--);var u=new ArrayBuffer(a),h=new Uint8Array(u);for(e=0;e<c;e+=4)r=n[t.charCodeAt(e)],o=n[t.charCodeAt(e+1)],i=n[t.charCodeAt(e+2)],s=n[t.charCodeAt(e+3)],h[p++]=r<<2|o>>4,h[p++]=(15&o)<<4|i>>2,h[p++]=(3&i)<<6|63&s;return u}}()},function(t,e){(function(e){function n(t){for(var e=0;e<t.length;e++){var n=t[e];if(n.buffer instanceof ArrayBuffer){var r=n.buffer;if(n.byteLength!==r.byteLength){var o=new Uint8Array(n.byteLength);o.set(new Uint8Array(r,n.byteOffset,n.byteLength)),r=o.buffer}t[e]=r}}}function r(t,e){e=e||{};var r=new i;n(t);for(var o=0;o<t.length;o++)r.append(t[o]);return e.type?r.getBlob(e.type):r.getBlob()}function o(t,e){return n(t),new Blob(t,e||{})}var i=e.BlobBuilder||e.WebKitBlobBuilder||e.MSBlobBuilder||e.MozBlobBuilder,s=function(){try{var t=new Blob(["hi"]);return 2===t.size}catch(e){return!1}}(),a=s&&function(){try{var t=new Blob([new Uint8Array([1,2])]);return 2===t.size}catch(e){return!1}}(),c=i&&i.prototype.append&&i.prototype.getBlob;t.exports=function(){return s?a?e.Blob:o:c?r:void 0}()}).call(e,function(){return this}())},function(t,e){e.encode=function(t){var e="";for(var n in t)t.hasOwnProperty(n)&&(e.length&&(e+="&"),e+=encodeURIComponent(n)+"="+encodeURIComponent(t[n]));return e},e.decode=function(t){for(var e={},n=t.split("&"),r=0,o=n.length;r<o;r++){var i=n[r].split("=");e[decodeURIComponent(i[0])]=decodeURIComponent(i[1])}return e}},function(t,e){t.exports=function(t,e){var n=function(){};n.prototype=e.prototype,t.prototype=new n,t.prototype.constructor=t}},function(t,e){"use strict";function n(t){var e="";do e=s[t%a]+e,t=Math.floor(t/a);while(t>0);return e}function r(t){var e=0;for(u=0;u<t.length;u++)e=e*a+c[t.charAt(u)];return e}function o(){var t=n(+new Date);return t!==i?(p=0,i=t):t+"."+n(p++)}for(var i,s="0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-_".split(""),a=64,c={},p=0,u=0;u<a;u++)c[s[u]]=u;o.encode=n,o.decode=r,t.exports=o},function(t,e,n){(function(e){function r(){}function o(t){i.call(this,t),this.query=this.query||{},a||(e.___eio||(e.___eio=[]),a=e.___eio),this.index=a.length;var n=this;a.push(function(t){n.onData(t)}),this.query.j=this.index,e.document&&e.addEventListener&&e.addEventListener("beforeunload",function(){n.script&&(n.script.onerror=r)},!1)}var i=n(21),s=n(32);t.exports=o;var a,c=/\n/g,p=/\\n/g;s(o,i),o.prototype.supportsBinary=!1,o.prototype.doClose=function(){this.script&&(this.script.parentNode.removeChild(this.script),this.script=null),this.form&&(this.form.parentNode.removeChild(this.form),this.form=null,this.iframe=null),i.prototype.doClose.call(this)},o.prototype.doPoll=function(){var t=this,e=document.createElement("script");this.script&&(this.script.parentNode.removeChild(this.script),this.script=null),e.async=!0,e.src=this.uri(),e.onerror=function(e){t.onError("jsonp poll error",e)};var n=document.getElementsByTagName("script")[0];n?n.parentNode.insertBefore(e,n):(document.head||document.body).appendChild(e),this.script=e;var r="undefined"!=typeof navigator&&/gecko/i.test(navigator.userAgent);r&&setTimeout(function(){var t=document.createElement("iframe");document.body.appendChild(t),document.body.removeChild(t)},100)},o.prototype.doWrite=function(t,e){function n(){r(),e()}function r(){if(o.iframe)try{o.form.removeChild(o.iframe)}catch(t){o.onError("jsonp polling iframe removal error",t)}try{var e='<iframe src="javascript:0" name="'+o.iframeId+'">';i=document.createElement(e)}catch(t){i=document.createElement("iframe"),i.name=o.iframeId,i.src="javascript:0"}i.id=o.iframeId,o.form.appendChild(i),o.iframe=i}var o=this;if(!this.form){var i,s=document.createElement("form"),a=document.createElement("textarea"),u=this.iframeId="eio_iframe_"+this.index;s.className="socketio",s.style.position="absolute",s.style.top="-1000px",s.style.left="-1000px",s.target=u,s.method="POST",s.setAttribute("accept-charset","utf-8"),a.name="d",s.appendChild(a),document.body.appendChild(s),this.form=s,this.area=a}this.form.action=this.uri(),r(),t=t.replace(p,"\\\n"),this.area.value=t.replace(c,"\\n");try{this.form.submit()}catch(h){}this.iframe.attachEvent?this.iframe.onreadystatechange=function(){"complete"===o.iframe.readyState&&n()}:this.iframe.onload=n}}).call(e,function(){return this}())},function(t,e,n){(function(e){function r(t){var e=t&&t.forceBase64;e&&(this.supportsBinary=!1),this.perMessageDeflate=t.perMessageDeflate,this.usingBrowserWebSocket=h&&!t.forceNode,this.protocols=t.protocols,this.usingBrowserWebSocket||(l=o),i.call(this,t)}var o,i=n(22),s=n(23),a=n(31),c=n(32),p=n(33),u=n(3)("engine.io-client:websocket"),h=e.WebSocket||e.MozWebSocket;if("undefined"==typeof window)try{o=n(36)}catch(f){}var l=h;l||"undefined"!=typeof window||(l=o),t.exports=r,c(r,i),r.prototype.name="websocket",r.prototype.supportsBinary=!0,r.prototype.doOpen=function(){if(this.check()){var t=this.uri(),e=this.protocols,n={agent:this.agent,perMessageDeflate:this.perMessageDeflate};n.pfx=this.pfx,n.key=this.key,n.passphrase=this.passphrase,n.cert=this.cert,n.ca=this.ca,n.ciphers=this.ciphers,n.rejectUnauthorized=this.rejectUnauthorized,this.extraHeaders&&(n.headers=this.extraHeaders),this.localAddress&&(n.localAddress=this.localAddress);try{this.ws=this.usingBrowserWebSocket?e?new l(t,e):new l(t):new l(t,e,n)}catch(r){return this.emit("error",r)}void 0===this.ws.binaryType&&(this.supportsBinary=!1),this.ws.supports&&this.ws.supports.binary?(this.supportsBinary=!0,this.ws.binaryType="nodebuffer"):this.ws.binaryType="arraybuffer",this.addEventListeners()}},r.prototype.addEventListeners=function(){var t=this;this.ws.onopen=function(){t.onOpen()},this.ws.onclose=function(){t.onClose()},this.ws.onmessage=function(e){t.onData(e.data)},this.ws.onerror=function(e){t.onError("websocket error",e)}},r.prototype.write=function(t){function n(){r.emit("flush"),setTimeout(function(){r.writable=!0,r.emit("drain")},0)}var r=this;this.writable=!1;for(var o=t.length,i=0,a=o;i<a;i++)!function(t){s.encodePacket(t,r.supportsBinary,function(i){if(!r.usingBrowserWebSocket){var s={};if(t.options&&(s.compress=t.options.compress),r.perMessageDeflate){var a="string"==typeof i?e.Buffer.byteLength(i):i.length;a<r.perMessageDeflate.threshold&&(s.compress=!1)}}try{r.usingBrowserWebSocket?r.ws.send(i):r.ws.send(i,s)}catch(c){u("websocket closed before onclose event")}--o||n()})}(t[i])},r.prototype.onClose=function(){i.prototype.onClose.call(this)},r.prototype.doClose=function(){"undefined"!=typeof this.ws&&this.ws.close()},r.prototype.uri=function(){var t=this.query||{},e=this.secure?"wss":"ws",n="";this.port&&("wss"===e&&443!==Number(this.port)||"ws"===e&&80!==Number(this.port))&&(n=":"+this.port),this.timestampRequests&&(t[this.timestampParam]=p()),this.supportsBinary||(t.b64=1),t=a.encode(t),t.length&&(t="?"+t);var r=this.hostname.indexOf(":")!==-1;return e+"://"+(r?"["+this.hostname+"]":this.hostname)+n+this.path+t},r.prototype.check=function(){return!(!l||"__initialize"in l&&this.name===r.prototype.name)}}).call(e,function(){return this}())},function(t,e){},function(t,e){var n=[].indexOf;t.exports=function(t,e){if(n)return t.indexOf(e);for(var r=0;r<t.length;++r)if(t[r]===e)return r;return-1}},function(t,e){(function(e){var n=/^[\],:{}\s]*$/,r=/\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g,o=/"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g,i=/(?:^|:|,)(?:\s*\[)+/g,s=/^\s+/,a=/\s+$/;t.exports=function(t){return"string"==typeof t&&t?(t=t.replace(s,"").replace(a,""),e.JSON&&JSON.parse?JSON.parse(t):n.test(t.replace(r,"@").replace(o,"]").replace(i,""))?new Function("return "+t)():void 0):null}}).call(e,function(){return this}())},function(t,e,n){"use strict";function r(t,e,n){this.io=t,this.nsp=e,this.json=this,this.ids=0,this.acks={},this.receiveBuffer=[],this.sendBuffer=[],this.connected=!1,this.disconnected=!0,n&&n.query&&(this.query=n.query),this.io.autoConnect&&this.open()}var o="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},i=n(7),s=n(8),a=n(40),c=n(41),p=n(42),u=n(3)("socket.io-client:socket"),h=n(31);t.exports=e=r;var f={connect:1,connect_error:1,connect_timeout:1,connecting:1,disconnect:1,error:1,reconnect:1,reconnect_attempt:1,reconnect_failed:1,reconnect_error:1,reconnecting:1,ping:1,pong:1},l=s.prototype.emit;s(r.prototype),r.prototype.subEvents=function(){if(!this.subs){var t=this.io;this.subs=[c(t,"open",p(this,"onopen")),c(t,"packet",p(this,"onpacket")),c(t,"close",p(this,"onclose"))]}},r.prototype.open=r.prototype.connect=function(){return this.connected?this:(this.subEvents(),this.io.open(),"open"===this.io.readyState&&this.onopen(),this.emit("connecting"),this)},r.prototype.send=function(){var t=a(arguments);return t.unshift("message"),this.emit.apply(this,t),this},r.prototype.emit=function(t){if(f.hasOwnProperty(t))return l.apply(this,arguments),this;var e=a(arguments),n={type:i.EVENT,data:e};return n.options={},n.options.compress=!this.flags||!1!==this.flags.compress,"function"==typeof e[e.length-1]&&(u("emitting packet with ack id %d",this.ids),this.acks[this.ids]=e.pop(),n.id=this.ids++),this.connected?this.packet(n):this.sendBuffer.push(n),delete this.flags,this},r.prototype.packet=function(t){t.nsp=this.nsp,this.io.packet(t)},r.prototype.onopen=function(){if(u("transport is open - connecting"),"/"!==this.nsp)if(this.query){var t="object"===o(this.query)?h.encode(this.query):this.query;u("sending connect packet with query %s",t),this.packet({type:i.CONNECT,query:t})}else this.packet({type:i.CONNECT})},r.prototype.onclose=function(t){u("close (%s)",t),this.connected=!1,this.disconnected=!0,delete this.id,this.emit("disconnect",t)},r.prototype.onpacket=function(t){if(t.nsp===this.nsp)switch(t.type){case i.CONNECT:this.onconnect();break;case i.EVENT:this.onevent(t);break;case i.BINARY_EVENT:this.onevent(t);break;case i.ACK:this.onack(t);break;case i.BINARY_ACK:this.onack(t);break;case i.DISCONNECT:this.ondisconnect();break;case i.ERROR:this.emit("error",t.data)}},r.prototype.onevent=function(t){var e=t.data||[];u("emitting event %j",e),null!=t.id&&(u("attaching ack callback to event"),e.push(this.ack(t.id))),this.connected?l.apply(this,e):this.receiveBuffer.push(e)},r.prototype.ack=function(t){var e=this,n=!1;return function(){if(!n){n=!0;var r=a(arguments);u("sending ack %j",r),e.packet({type:i.ACK,id:t,data:r})}}},r.prototype.onack=function(t){var e=this.acks[t.id];"function"==typeof e?(u("calling ack %s with %j",t.id,t.data),e.apply(this,t.data),delete this.acks[t.id]):u("bad ack %s",t.id)},r.prototype.onconnect=function(){this.connected=!0,this.disconnected=!1,this.emit("connect"),this.emitBuffered()},r.prototype.emitBuffered=function(){var t;for(t=0;t<this.receiveBuffer.length;t++)l.apply(this,this.receiveBuffer[t]);for(this.receiveBuffer=[],t=0;t<this.sendBuffer.length;t++)this.packet(this.sendBuffer[t]);this.sendBuffer=[]},r.prototype.ondisconnect=function(){u("server disconnect (%s)",this.nsp),this.destroy(),this.onclose("io server disconnect")},r.prototype.destroy=function(){if(this.subs){for(var t=0;t<this.subs.length;t++)this.subs[t].destroy();this.subs=null}this.io.destroy(this)},r.prototype.close=r.prototype.disconnect=function(){return this.connected&&(u("performing disconnect (%s)",this.nsp),this.packet({type:i.DISCONNECT})),this.destroy(),this.connected&&this.onclose("io client disconnect"),this},r.prototype.compress=function(t){return this.flags=this.flags||{},this.flags.compress=t,this}},function(t,e){function n(t,e){var n=[];e=e||0;for(var r=e||0;r<t.length;r++)n[r-e]=t[r];return n}t.exports=n},function(t,e){"use strict";function n(t,e,n){return t.on(e,n),{destroy:function(){t.removeListener(e,n)}}}t.exports=n},function(t,e){var n=[].slice;t.exports=function(t,e){if("string"==typeof e&&(e=t[e]),"function"!=typeof e)throw new Error("bind() requires a function");var r=n.call(arguments,2);return function(){return e.apply(t,r.concat(n.call(arguments)))}}},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}}])});
0 ignored issues
show
Coding Style Best Practice introduced by
By convention, constructors like l should be capitalized.
Loading history...
Bug introduced by
The variable Symbol seems to be never declared. If this is a global, consider adding a /** global: Symbol */ comment.

This checks looks for references to variables that have not been declared. This is most likey a typographical error or a variable has been renamed.

To learn more about declaring variables in Javascript, see the MDN.

Loading history...
Comprehensibility Naming Best Practice introduced by
The variable s already seems to be declared on line 2. Consider using another variable name or omitting the var keyword.

This check looks for variables that are declared in multiple lines. There may be several reasons for this.

In the simplest case the variable name was reused by mistake. This may lead to very hard to locate bugs.

If you want to reuse a variable for another purpose, consider declaring it at or near the top of your function and just assigning to it subsequently so it is always declared.

Loading history...
Unused Code introduced by
The parameter i is not used and could be removed.

This check looks for parameters in functions that are not used in the function body and are not followed by other parameters which are used inside the function.

Loading history...
Comprehensibility Naming Best Practice introduced by
The variable o already seems to be declared on line 2. Consider using another variable name or omitting the var keyword.

This check looks for variables that are declared in multiple lines. There may be several reasons for this.

In the simplest case the variable name was reused by mistake. This may lead to very hard to locate bugs.

If you want to reuse a variable for another purpose, consider declaring it at or near the top of your function and just assigning to it subsequently so it is always declared.

Loading history...
Bug introduced by
The variable o does not seem to be initialized in case "undefined" == typeof window on line 2 is false. Are you sure this can never be the case?
Loading history...
Unused Code introduced by
The assignment to variable n seems to be never used. Consider removing it.
Loading history...
Coding Style Best Practice introduced by
By convention, constructors like k should be capitalized.
Loading history...
Bug introduced by
The variable Blob seems to be never declared. If this is a global, consider adding a /** global: Blob */ comment.

This checks looks for references to variables that have not been declared. This is most likey a typographical error or a variable has been renamed.

To learn more about declaring variables in Javascript, see the MDN.

Loading history...
Best Practice introduced by
There is no return statement in this branch, but you do return something in other branches. Did you maybe miss it? If you do not want to return anything, consider adding return undefined; explicitly.
Loading history...
Coding Style Best Practice introduced by
By convention, constructors like t should be capitalized.
Loading history...
Performance Best Practice introduced by
Using new Function() to create a function is slow and difficult to debug. Such functions do not create a closure. Consider using another way to define your function.
Loading history...
Complexity introduced by
A for in loop automatically includes the property of any prototype object, consider checking the key using hasOwnProperty.

When iterating over the keys of an object, this includes not only the keys of the object, but also keys contained in the prototype of that object. It is generally a best practice to check for these keys specifically:

var someObject;
for (var key in someObject) {
    if ( ! someObject.hasOwnProperty(key)) {
        continue; // Skip keys from the prototype.
    }

    doSomethingWith(key);
}
Loading history...
Unused Code introduced by
The parameter t is not used and could be removed.

This check looks for parameters in functions that are not used in the function body and are not followed by other parameters which are used inside the function.

Loading history...
Coding Style introduced by
Consider using undefined instead of void(0). It is equivalent and more straightforward to read.
Loading history...
Bug introduced by
The variable navigator seems to be never declared. If this is a global, consider adding a /** global: navigator */ comment.

This checks looks for references to variables that have not been declared. This is most likey a typographical error or a variable has been renamed.

To learn more about declaring variables in Javascript, see the MDN.

Loading history...
Bug introduced by
The variable i seems to be never declared. If this is a global, consider adding a /** global: i */ comment.

This checks looks for references to variables that have not been declared. This is most likey a typographical error or a variable has been renamed.

To learn more about declaring variables in Javascript, see the MDN.

Loading history...
Comprehensibility introduced by
Usage of the sequence operator is discouraged, since it may lead to obfuscated code.

The sequence or comma operator allows the inclusion of multiple expressions where only is permitted. The result of the sequence is the value of the last expression.

This operator is most often used in for statements.

Used in another places it can make code hard to read, especially when people do not realize it even exists as a seperate operator.

This check looks for usage of the sequence operator in locations where it is not necessary and could be replaced by a series of expressions or statements.

var a,b,c;

a = 1, b = 1,  c= 3;

could just as well be written as:

var a,b,c;

a = 1;
b = 1;
c = 3;

To learn more about the sequence operator, please refer to the MDN.

Loading history...
Bug introduced by
The variable s does not seem to be initialized in case !r.usingBrowserWebSocket on line 2 is false. Are you sure the function send handles undefined variables?
Loading history...
Coding Style Best Practice introduced by
By convention, constructors like n should be capitalized.
Loading history...
Coding Style Best Practice introduced by
Curly braces around statements make for more readable code and help prevent bugs when you add further statements.

Consider adding curly braces around all statements when they are executed conditionally. This is optional if there is only one statement, but leaving them out can lead to unexpected behaviour if another statement is added later.

Consider:

if (a > 0)
    b = 42;

If you or someone else later decides to put another statement in, only the first statement will be executed.

if (a > 0)
    console.log("a > 0");
    b = 42;

In this case the statement b = 42 will always be executed, while the logging statement will be executed conditionally.

if (a > 0) {
    console.log("a > 0");
    b = 42;
}

ensures that the proper code will be executed conditionally no matter how many statements are added or removed.

Loading history...
Complexity Best Practice introduced by
There is no return statement if this.check() is false. Are you sure this is correct? If so, consider adding return; explicitly.

This check looks for functions where a return statement is found in some execution paths, but not in all.

Consider this little piece of code

function isBig(a) {
    if (a > 5000) {
        return "yes";
    }
}

console.log(isBig(5001)); //returns yes
console.log(isBig(42)); //returns undefined

The function isBig will only return a specific value when its parameter is bigger than 5000. In any other case, it will implicitly return undefined.

This behaviour may not be what you had intended. In any case, you can add a return undefined to the other execution path to make the return value explicit.

Loading history...
Comprehensibility Naming Best Practice introduced by
The variable p already seems to be declared on line 2. Consider using another variable name or omitting the var keyword.

This check looks for variables that are declared in multiple lines. There may be several reasons for this.

In the simplest case the variable name was reused by mistake. This may lead to very hard to locate bugs.

If you want to reuse a variable for another purpose, consider declaring it at or near the top of your function and just assigning to it subsequently so it is always declared.

Loading history...
Bug introduced by
The variable u is changed as part of the for loop for example by u++ on line 2. Only the value of the last iteration will be visible in this function if it is called after the loop.
Loading history...
Coding Style Comprehensibility Best Practice introduced by
Empty catch clauses should be used with caution; consider adding a comment why this is needed.
Loading history...
Comprehensibility Naming Best Practice introduced by
The variable r already seems to be declared on line 2. Consider using another variable name or omitting the var keyword.

This check looks for variables that are declared in multiple lines. There may be several reasons for this.

In the simplest case the variable name was reused by mistake. This may lead to very hard to locate bugs.

If you want to reuse a variable for another purpose, consider declaring it at or near the top of your function and just assigning to it subsequently so it is always declared.

Loading history...
Bug introduced by
The variable XMLHttpRequest seems to be never declared. If this is a global, consider adding a /** global: XMLHttpRequest */ comment.

This checks looks for references to variables that have not been declared. This is most likey a typographical error or a variable has been renamed.

To learn more about declaring variables in Javascript, see the MDN.

Loading history...
Unused Code introduced by
The variable i seems to be never used. Consider removing it.
Loading history...
Unused Code introduced by
The parameter r is not used and could be removed.

This check looks for parameters in functions that are not used in the function body and are not followed by other parameters which are used inside the function.

Loading history...
Unused Code introduced by
The variable e seems to be never used. Consider removing it.
Loading history...
Bug introduced by
The variable i is changed as part of the for loop for example by i++ on line 2. Only the value of the last iteration will be visible in this function if it is called after the loop.
Loading history...
Coding Style Best Practice introduced by
By convention, constructors like a should be capitalized.
Loading history...
Coding Style introduced by
As per coding-style, switch statements should have a default case.
Loading history...
Bug introduced by
The variable FileReader seems to be never declared. If this is a global, consider adding a /** global: FileReader */ comment.

This checks looks for references to variables that have not been declared. This is most likey a typographical error or a variable has been renamed.

To learn more about declaring variables in Javascript, see the MDN.

Loading history...
Unused Code introduced by
The parameter e is not used and could be removed.

This check looks for parameters in functions that are not used in the function body and are not followed by other parameters which are used inside the function.

Loading history...
Coding Style Best Practice introduced by
By convention, constructors like i should be capitalized.
Loading history...
Unused Code introduced by
The parameter n is not used and could be removed.

This check looks for parameters in functions that are not used in the function body and are not followed by other parameters which are used inside the function.

Loading history...
3
//# sourceMappingURL=socket.io.js.map
4