Run results for: Custom Event vs PubSub Single Event

Run details:

User agent: Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/140.0.0.0 Mobile Safari/537.36

Browser: Chrome Mobile 140

Operating system: Android

Device Platform: Mobile

Date tested: 10 months ago

Test name	Executions per second
✓ PubSub	51,319 Ops/sec
Custom Event	2,781 Ops/sec

Tests:

Custom Event
let i = 1001; const results = []; while (--i) { window.dispatchEvent(new CustomEvent('custom:test')); }
PubSub
class PubSub { constructor() { this.events = {}; } subscribe(event, callback) { if (!this.events.hasOwnProperty(event)) { this.events[event] = []; } return this.events[event].push(callback); } publish(event, data = {}) { if (!this.events.hasOwnProperty(event)) { return []; } return this.events[event].map((callback) => callback(data)); } } const pubSub = new PubSub(); let i = 1001; const results = []; while (--i) { pubSub.publish('custom', 'test') }