1 line
1.4 KiB
JSON
1 line
1.4 KiB
JSON
{"ast":null,"code":"'use strict';\n\nvar inherits = require('inherits'),\n EventTarget = require('./eventtarget');\n\nfunction EventEmitter() {\n EventTarget.call(this);\n}\n\ninherits(EventEmitter, EventTarget);\n\nEventEmitter.prototype.removeAllListeners = function (type) {\n if (type) {\n delete this._listeners[type];\n } else {\n this._listeners = {};\n }\n};\n\nEventEmitter.prototype.once = function (type, listener) {\n var self = this,\n fired = false;\n\n function g() {\n self.removeListener(type, g);\n\n if (!fired) {\n fired = true;\n listener.apply(this, arguments);\n }\n }\n\n this.on(type, g);\n};\n\nEventEmitter.prototype.emit = function () {\n var type = arguments[0];\n var listeners = this._listeners[type];\n\n if (!listeners) {\n return;\n } // equivalent of Array.prototype.slice.call(arguments, 1);\n\n\n var l = arguments.length;\n var args = new Array(l - 1);\n\n for (var ai = 1; ai < l; ai++) {\n args[ai - 1] = arguments[ai];\n }\n\n for (var i = 0; i < listeners.length; i++) {\n listeners[i].apply(this, args);\n }\n};\n\nEventEmitter.prototype.on = EventEmitter.prototype.addListener = EventTarget.prototype.addEventListener;\nEventEmitter.prototype.removeListener = EventTarget.prototype.removeEventListener;\nmodule.exports.EventEmitter = EventEmitter;","map":null,"metadata":{},"sourceType":"script"} |