Run results for: set.has vs. object in

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:109.0) Gecko/20100101 Firefox/115.0

Browser: Firefox 115

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: 6 months ago

Test name	Executions per second
in object	23890930.0 Ops/sec
lookup	23962370.0 Ops/sec

Script Preparation code:

var a = {1 : true, 4: true, 6: true, 9: true, 14: true};
var b = new Set(Object.keys(a));

Tests: