String event benchmark of RegexEmitter, PatternEmitter and EventEmitter

pattern-emitter-comparison

/**
 * Quick comparison
 */

var Benchmark      = require('benchmark');
var EventEmitter   = require('events').EventEmitter;
var PatternEmitter = require('pattern-emitter');
var RegexEmitter   = require('regexemitter');

var suite          = new Benchmark.Suite();
var eventEmitter   = new EventEmitter();
var regexEmitter   = new RegexEmitter();
var patternEmitter = new PatternEmitter();

// Regex emitter prevents you from adding more than maxListeners
regexEmitter.setMaxListeners(10000000);

// Prevent warning
patternEmitter.setMaxListeners(10000000);

var i, j;

// Setup all emitters with 10 listeners on each of 10 events

for (i = 0; i < 10; i++) {
  for (j = 0; j < 10; j++) {
    eventEmitter.on('event:' + i, function() {
      // Do nothing
    });
  }
}

for (i = 0; i < 10; i++) {
  for (j = 0; j < 10; j++) {
    regexEmitter.on('event:' + i, function() {
      // Do nothing
    });
  }
}

for (i = 0; i < 10; i++) {
  for (j = 0; j < 10; j++) {
    patternEmitter.on('event:' + i, function() {
      // Do nothing
    });
  }
}

suite.add('EventEmitter', function() {
  for (i = 0; i < 10; i++) {
    eventEmitter.emit('event:' + i);
  }
})
.add('RegexEmitter', function() {
  for (i = 0; i < 10; i++) {
    regexEmitter.emit('event:' + i);
  }
})
.add('PatternEmitter', function() {
  for (i = 0; i < 10; i++) {
    patternEmitter.emit('event:' + i);
  }
})
.on('cycle', function(event) {
  console.log(String(event.target));
})
.run();

// $ node test.js
// EventEmitter x 205,078 ops/sec ±1.01% (100 runs sampled)
// RegexEmitter x 4,471 ops/sec ±0.57% (101 runs sampled)
// PatternEmitter x 163,950 ops/sec ±1.07% (100 runs sampled)