Run results for: instanceOf vs __proto__

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:138.0) Gecko/20100101 Firefox/138.0

Browser: Firefox 138

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
instanceOf	136886.2 Ops/sec
__proto__	139091.8 Ops/sec

Script Preparation code:

var a = new Map();

Tests: