Comparing javascript pubsub frameworks

index.js

/**
 * EventEmitter x 2,590,624 ops/sec ±4.54% (79 runs sampled)
 * EventEmitter2 x 9,239,432 ops/sec ±1.95% (90 runs sampled)
 * Mitt x 3,161 ops/sec ±43.29% (10 runs sampled)
 * Tiny Emitter x 2,380,065 ops/sec ±1.46% (94 runs sampled)
 * PubsubJS x 231,646 ops/sec ±14.09% (64 runs sampled)
 * Fastest is EventEmitter2
 */

var Benchmark = require('benchmark');
var suite = new Benchmark.Suite();

var TinyEmitter = require('tiny-emitter');
var tinyEmitter = new TinyEmitter();

var Mitt = require('mitt');
var mitter = Mitt();

var pubsubJS = require('pubsub-js');

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

var EventEmitter2 = require('eventemitter2').EventEmitter2;
var emitter2 = new EventEmitter2();

var EventEmitter3 = require('events').EventEmitter;
var emitter3 = new EventEmitter3();

suite

  .add('EventEmitter', function() {
    emitter.on('test1', function() {
      1 == 1;
    });
    emitter.emit('test1');
    emitter.removeAllListeners('test1');
  })
  .add('EventEmitter2', function() {
    emitter2.on('test2', function() {
      1 == 1;
    });
    emitter2.emit('test2');
    emitter2.removeAllListeners('test2');
  })

  .add('Mitt', function() {
    mitter.on('test3', function() {
      1 == 1;
    });
    mitter.emit('test3');
    mitter.off('test3');
  })
  .add('Tiny Emitter', function() {
    tinyEmitter.on('test3', function() {
      1 == 1;
    });
    tinyEmitter.emit('test3');
    tinyEmitter.off('test3');
  })
  .add('PubsubJS', function() {
    pubsubJS.subscribe('test3', function() {
      1 == 1;
    });
    pubsubJS.publish('test3');
    pubsubJS.unsubscribe('test3');
  })

  .on('cycle', function(event, bench) {
    console.log(String(event.target));
  })
  .on('complete', function() {
    console.log('\nFastest is ' + this.filter('fastest').map('name'));
  })

  .run(true);