Run results for: Check function. typeof vs constructor + null check

Run details:

User agent: Mozilla/5.0 (Android 9; Mobile; rv:109.0) Gecko/109.0 Firefox/109.0

Browser: Firefox Mobile 109

Operating system: Android

Device Platform: Mobile

Date tested: one year ago

Test name	Executions per second
typeof	343670300.0 Ops/sec
constructor	92707420.0 Ops/sec

Script Preparation code:

var fun = a => {};

Tests: