Object-Oriented Event Emitter

ooee is a function which returns a very basic mixin for turning an object into an event emitter. Unlike the majority of similar libraries, the event emitter itself doesn't implement off() method. Instead, its on() method returns an instance of OOEListener which has off() method for unbinding itself, so you don't have to care which events you've registered for / which callbacks you've attached: just call off() on each of your listeners, and you're free to dispose your object. This approach is not only secure, but also easier to use in case you care about memory leaks.

ooee extends your object with 2 public methods, on() and emit(), and one dynamically attached property to store event listeners in. The name of the property can be customized by calling ooee({namespace: 'desiredNamespace'}), the default value is '_ooee'. The typical usage is (assuming you're using lodash): _.assign(Class.prototype, ooee(), { // your methods go here.

Node.js

1. Install with npm i ooee
2. var ooee = require('ooee');

Browser

Put ooee.js in your project and you'll have global ooee() variable.

In case you want to build for the browser yourself

1. Install with npm i --dev ooee
2. Install gulp with npm i -g gulp (may require sudo)
3. gulp will make the browser-usable bundle for you (look for ooee.js in the project folder)