EventListener.js 
EventListener Class
Document
How to use
Browser
<script src="lib/EventListener.js">
<script>
console.log( new EventListener() );
</script>WebWorkers
importScripts("lib/EventListener.js");
console.log( new EventListener() );Node.js
var EventListener = require("lib/EventListener.js");
console.log( new EventListener() );