Run results for: promise vs callback

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) QtWebEngine/5.15.2 Chrome/87.0.4280.144 Safari/537.36

Browser: Chrome 87

Operating system: Linux

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
async	1172263.6 Ops/sec
callback	635441152.0 Ops/sec

Tests: