https://farmersmarketsontario.com/_scripts/_hi5/selectize/microevent.js

1/**
2 * MicroEvent - to make any js object an event emitter (server or browser)
3 * 
4 * - pure javascript - server compatible, browser compatible
5 * - dont rely on the browser doms
6 * - super simple - you get it immediatly, no mistery, no magic involved
7 *
8 * - create a MicroEventDebug with goodies to debug
9 *   - make it safer to use
10*/
11
12var MicroEvent	= function(){};
13MicroEvent.prototype	= {
14	bind	: function(event, fct){
15		this._events = this._events || {};
16		this._events[event] = this._events[event]	|| [];
17		this._events[event].push(fct);
18	},
19	unbind	: function(event, fct){
20		this._events = this._events || {};
21		if( event in this._events === false  )	return;
22		this._events[event].splice(this._events[event].indexOf(fct), 1);
23	},
24	trigger	: function(event /* , args... */){
25		this._events = this._events || {};
26		if( event in this._events === false  )	return;
27		for(var i = 0; i < this._events[event].length; i++){
28			this._events[event][i].apply(this, Array.prototype.slice.call(arguments, 1));
29		}
30	}
31};
32
33/**
34 * mixin will delegate all MicroEvent.js function in the destination object
35 *
36 * - require('MicroEvent').mixin(Foobar) will make Foobar able to use MicroEvent
37 *
38 * @param {Object} the object which will support MicroEvent
39*/
40MicroEvent.mixin	= function(destObject){
41	var props	= ['bind', 'unbind', 'trigger'];
42	for(var i = 0; i < props.length; i ++){
43		if( typeof destObject === 'function' ){
44			destObject.prototype[props[i]]	= MicroEvent.prototype[props[i]];
45		}else{
46			destObject[props[i]] = MicroEvent.prototype[props[i]];
47		}
48	}
49	return destObject;
50}
51
52// export in common js
53if( typeof module !== "undefined" && ('exports' in module)){
54	module.exports	= MicroEvent;
55}