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evt-emitter

v1.0.1

Published

Node's events module, with an evt-listener factory bundled.

Downloads

14

Readme

Build Status Coverage Status

evt-emitter

What is it?

Node's events module with a createListener factory method on its prototype.

What does it do?

It creates an instance of EventListener (evt-listener) without having to pass an event emitter parameter. See below for a comparison.

Prerequisites

Install it using npm, saving it as a dependency.

npm i evt-emitter --save

Comparison

We're going to compare how events and evt-emitter do the following:

  • Create an event emitter
  • Register an event listener
  • Deregister the listener

Node's events module

var EventEmitter = require('events').EventEmitter;
var events = new EventEmitter();

var eventName = 'eventName';
var eventNameListener = function(payload) {
  console.log('Event ' + eventName + ' triggered with: ' + playload);
};

events.on(eventName, eventNameListener);

//sometime later..
events.removeListener(eventName, eventNameListener);

evt-emitter

var EventEmitter = require('evt-emitter').EventEmitter;
var events = new EventEmitter();

var eventNamelistener = events.createListener('eventName').on(function(payload) {
  console.log('Event ' + eventNameListener.event + ' triggered with: ' + playload);
});

//sometime later..
eventNameListener.off();

More information

Check out evt-listener's documentation and tests.