Run results for: set.has vs. Object key lookup 2

Run details:

User agent: Mozilla/5.0 (Windows NT 6.3; Win64; x64; rv:108.0) Gecko/20100101 Firefox/108.0

Browser: Firefox 108

Operating system: Windows 8.1

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
includes	1513873792.0 Ops/sec
key lookup	1519582848.0 Ops/sec

Script Preparation code:

var a = new Set([1, 2, 3, 4, 5, 6, 7, 8, 9, 10]);
var b = {1: true, 2: true, 3: true, 4: true, 5: true, 6: true, 7: true, 8: true, 9: true, 10: true}

Tests:

includes
return a.has(9)
key lookup
return !!b['9']

Run results for: set.has vs. Object key lookup 2

includes

key lookup