Created
June 28, 2015 14:02
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| var EventEmitter = require('events').EventEmitter; | |
| var _ = require('lodash'); | |
| function PastEventEmitter() { | |
| EventEmitter.call(this); | |
| this.past = []; | |
| var old_emit = this.emit; | |
| this.emit = function(event) { | |
| this.past.push(event); | |
| old_emit.apply(this, arguments); | |
| } | |
| this.after = function(event, listener) { | |
| listener = _.ary(listener, 0); | |
| if (this.past.indexOf(event) !== -1) { | |
| return listener(); | |
| } | |
| this.on(event, listener); | |
| }; | |
| } | |
| PastEventEmitter.prototype = _.create(EventEmitter.prototype, { | |
| 'constructor': PastEventEmitter | |
| }); | |
| module.exports = PastEventEmitter; |
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