Run results for: array includes vs object key lookup, large arrays

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36 Edg/130.0.0.0

Browser: Chrome 130

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
includes	33861656.0 Ops/sec
lookup	57631748.0 Ops/sec

Script Preparation code:

var a = Array.from({length:500},(v,k)=>k+1)
var b = Object.assign({}, ...a.map((x) => ({[x]: true})));

Tests: