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: / usr / share / javascript / events /
Filename : events.min.js
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"use strict";var R=typeof Reflect==="object"?Reflect:null;var ReflectApply=R&&typeof R.apply==="function"?R.apply:function ReflectApply(target,receiver,args){return Function.prototype.apply.call(target,receiver,args)};var ReflectOwnKeys;if(R&&typeof R.ownKeys==="function"){ReflectOwnKeys=R.ownKeys}else if(Object.getOwnPropertySymbols){ReflectOwnKeys=function ReflectOwnKeys(target){return Object.getOwnPropertyNames(target).concat(Object.getOwnPropertySymbols(target))}}else{ReflectOwnKeys=function ReflectOwnKeys(target){return Object.getOwnPropertyNames(target)}}function ProcessEmitWarning(warning){if(console&&console.warn)console.warn(warning)}var NumberIsNaN=Number.isNaN||function NumberIsNaN(value){return value!==value};function EventEmitter(){EventEmitter.init.call(this)}module.exports=EventEmitter;module.exports.once=once;EventEmitter.EventEmitter=EventEmitter;EventEmitter.prototype._events=undefined;EventEmitter.prototype._eventsCount=0;EventEmitter.prototype._maxListeners=undefined;var defaultMaxListeners=10;function checkListener(listener){if(typeof listener!=="function"){throw new TypeError('The "listener" argument must be of type Function. Received type '+typeof listener)}}Object.defineProperty(EventEmitter,"defaultMaxListeners",{enumerable:true,get:function(){return defaultMaxListeners},set:function(arg){if(typeof arg!=="number"||arg<0||NumberIsNaN(arg)){throw new RangeError('The value of "defaultMaxListeners" is out of range. It must be a non-negative number. Received '+arg+".")}defaultMaxListeners=arg}});EventEmitter.init=function(){if(this._events===undefined||this._events===Object.getPrototypeOf(this)._events){this._events=Object.create(null);this._eventsCount=0}this._maxListeners=this._maxListeners||undefined};EventEmitter.prototype.setMaxListeners=function setMaxListeners(n){if(typeof n!=="number"||n<0||NumberIsNaN(n)){throw new RangeError('The value of "n" is out of range. It must be a non-negative number. Received '+n+".")}this._maxListeners=n;return this};function _getMaxListeners(that){if(that._maxListeners===undefined)return EventEmitter.defaultMaxListeners;return that._maxListeners}EventEmitter.prototype.getMaxListeners=function getMaxListeners(){return _getMaxListeners(this)};EventEmitter.prototype.emit=function emit(type){var args=[];for(var i=1;i<arguments.length;i++)args.push(arguments[i]);var doError=type==="error";var events=this._events;if(events!==undefined)doError=doError&&events.error===undefined;else if(!doError)return false;if(doError){var er;if(args.length>0)er=args[0];if(er instanceof Error){throw er}var err=new Error("Unhandled error."+(er?" ("+er.message+")":""));err.context=er;throw err}var handler=events[type];if(handler===undefined)return false;if(typeof handler==="function"){ReflectApply(handler,this,args)}else{var len=handler.length;var listeners=arrayClone(handler,len);for(var i=0;i<len;++i)ReflectApply(listeners[i],this,args)}return true};function _addListener(target,type,listener,prepend){var m;var events;var existing;checkListener(listener);events=target._events;if(events===undefined){events=target._events=Object.create(null);target._eventsCount=0}else{if(events.newListener!==undefined){target.emit("newListener",type,listener.listener?listener.listener:listener);events=target._events}existing=events[type]}if(existing===undefined){existing=events[type]=listener;++target._eventsCount}else{if(typeof existing==="function"){existing=events[type]=prepend?[listener,existing]:[existing,listener]}else if(prepend){existing.unshift(listener)}else{existing.push(listener)}m=_getMaxListeners(target);if(m>0&&existing.length>m&&!existing.warned){existing.warned=true;var w=new Error("Possible EventEmitter memory leak detected. "+existing.length+" "+String(type)+" listeners "+"added. Use emitter.setMaxListeners() to "+"increase limit");w.name="MaxListenersExceededWarning";w.emitter=target;w.type=type;w.count=existing.length;ProcessEmitWarning(w)}}return target}EventEmitter.prototype.addListener=function addListener(type,listener){return _addListener(this,type,listener,false)};EventEmitter.prototype.on=EventEmitter.prototype.addListener;EventEmitter.prototype.prependListener=function prependListener(type,listener){return _addListener(this,type,listener,true)};function onceWrapper(){if(!this.fired){this.target.removeListener(this.type,this.wrapFn);this.fired=true;if(arguments.length===0)return this.listener.call(this.target);return this.listener.apply(this.target,arguments)}}function _onceWrap(target,type,listener){var state={fired:false,wrapFn:undefined,target:target,type:type,listener:listener};var wrapped=onceWrapper.bind(state);wrapped.listener=listener;state.wrapFn=wrapped;return wrapped}EventEmitter.prototype.once=function once(type,listener){checkListener(listener);this.on(type,_onceWrap(this,type,listener));return this};EventEmitter.prototype.prependOnceListener=function prependOnceListener(type,listener){checkListener(listener);this.prependListener(type,_onceWrap(this,type,listener));return this};EventEmitter.prototype.removeListener=function removeListener(type,listener){var list,events,position,i,originalListener;checkListener(listener);events=this._events;if(events===undefined)return this;list=events[type];if(list===undefined)return this;if(list===listener||list.listener===listener){if(--this._eventsCount===0)this._events=Object.create(null);else{delete events[type];if(events.removeListener)this.emit("removeListener",type,list.listener||listener)}}else if(typeof list!=="function"){position=-1;for(i=list.length-1;i>=0;i--){if(list[i]===listener||list[i].listener===listener){originalListener=list[i].listener;position=i;break}}if(position<0)return this;if(position===0)list.shift();else{spliceOne(list,position)}if(list.length===1)events[type]=list[0];if(events.removeListener!==undefined)this.emit("removeListener",type,originalListener||listener)}return this};EventEmitter.prototype.off=EventEmitter.prototype.removeListener;EventEmitter.prototype.removeAllListeners=function removeAllListeners(type){var listeners,events,i;events=this._events;if(events===undefined)return this;if(events.removeListener===undefined){if(arguments.length===0){this._events=Object.create(null);this._eventsCount=0}else if(events[type]!==undefined){if(--this._eventsCount===0)this._events=Object.create(null);else delete events[type]}return this}if(arguments.length===0){var keys=Object.keys(events);var key;for(i=0;i<keys.length;++i){key=keys[i];if(key==="removeListener")continue;this.removeAllListeners(key)}this.removeAllListeners("removeListener");this._events=Object.create(null);this._eventsCount=0;return this}listeners=events[type];if(typeof listeners==="function"){this.removeListener(type,listeners)}else if(listeners!==undefined){for(i=listeners.length-1;i>=0;i--){this.removeListener(type,listeners[i])}}return this};function _listeners(target,type,unwrap){var events=target._events;if(events===undefined)return[];var evlistener=events[type];if(evlistener===undefined)return[];if(typeof evlistener==="function")return unwrap?[evlistener.listener||evlistener]:[evlistener];return unwrap?unwrapListeners(evlistener):arrayClone(evlistener,evlistener.length)}EventEmitter.prototype.listeners=function listeners(type){return _listeners(this,type,true)};EventEmitter.prototype.rawListeners=function rawListeners(type){return _listeners(this,type,false)};EventEmitter.listenerCount=function(emitter,type){if(typeof emitter.listenerCount==="function"){return emitter.listenerCount(type)}else{return listenerCount.call(emitter,type)}};EventEmitter.prototype.listenerCount=listenerCount;function listenerCount(type){var events=this._events;if(events!==undefined){var evlistener=events[type];if(typeof evlistener==="function"){return 1}else if(evlistener!==undefined){return evlistener.length}}return 0}EventEmitter.prototype.eventNames=function eventNames(){return this._eventsCount>0?ReflectOwnKeys(this._events):[]};function arrayClone(arr,n){var copy=new Array(n);for(var i=0;i<n;++i)copy[i]=arr[i];return copy}function spliceOne(list,index){for(;index+1<list.length;index++)list[index]=list[index+1];list.pop()}function unwrapListeners(arr){var ret=new Array(arr.length);for(var i=0;i<ret.length;++i){ret[i]=arr[i].listener||arr[i]}return ret}function once(emitter,name){return new Promise((function(resolve,reject){function errorListener(err){emitter.removeListener(name,resolver);reject(err)}function resolver(){if(typeof emitter.removeListener==="function"){emitter.removeListener("error",errorListener)}resolve([].slice.call(arguments))}eventTargetAgnosticAddListener(emitter,name,resolver,{once:true});if(name!=="error"){addErrorHandlerIfEventEmitter(emitter,errorListener,{once:true})}}))}function addErrorHandlerIfEventEmitter(emitter,handler,flags){if(typeof emitter.on==="function"){eventTargetAgnosticAddListener(emitter,"error",handler,flags)}}function eventTargetAgnosticAddListener(emitter,name,listener,flags){if(typeof emitter.on==="function"){if(flags.once){emitter.once(name,listener)}else{emitter.on(name,listener)}}else if(typeof emitter.addEventListener==="function"){emitter.addEventListener(name,(function wrapListener(arg){if(flags.once){emitter.removeEventListener(name,wrapListener)}listener(arg)}))}else{throw new TypeError('The "emitter" argument must be of type EventEmitter. Received type '+typeof emitter)}}