Run results for: promise vs callback

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 15_7 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/93.0.4577.78 Mobile/15E148 Safari/604.1

Browser: Chrome Mobile iOS 93

Operating system: iOS 15.7

Device Platform: Mobile

Date tested: 2 years ago

callback

28.1M/s

async

2.0M/s

View exact numbers

Test name	Executions per second
✓ callback	28,051,318 Ops/sec
async	1,986,143 Ops/sec

Tests:

async
(async() => { await true; })();
callback
((next) => {next()})(() => {});