Run results for: SET has/get vs ARR find/some/indexOf + ARR splice/set search array as found

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.0) Gecko/20100101 Firefox/128.0

Browser: Firefox 128

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
ARRincludes	7334.4 Ops/sec
Arr find	4305.9 Ops/sec
SET has	1204061.1 Ops/sec
Arr some	4297.4 Ops/sec
Arr indexOf	5871.4 Ops/sec
Arr sort + index	818100.0 Ops/sec
Arr presorted with remove - splice	40354.1 Ops/sec
Arr presorted with remove - set	573.8 Ops/sec

Script Preparation code:

function func(a, b) {  
  return 0.5 - Math.random();
} 

var a = Array.from({length: 1000}).map((_, i) => i)
var arrA0 = a.toSorted(func);
var arrA1 = a.toSorted(func);
var arrA2 = a.toSorted(func);

var arrS0 = new Set(a.map((_, i) => i).toSorted(func));
var arrS1 = new Set(a.map((_, i) => i).toSorted(func));


const tenItemsToFind = () => a.toSorted(func).slice(0, 10);
var list = a.slice(0,10).map(() => Array.from({length: 1000}).map((_, i) => i).toSorted(func).slice(0, 100))

var listLast = a.map(v => v).toSorted(func);
var listLastTwo =a.map(v => v).toSorted(func);

var aclone = a.map(v=>v);
var aclonetwo = a.map(v=>v);

Tests:

ARRincludes
list.forEach( arr => arr.forEach( a => arrA0.includes(a)))
Arr find
list.forEach( arr => arr.forEach( a => arrA0.find(v => v === a)))
SET has
list.forEach(arr => arr.forEach(a => arrS0.has(a)))
Arr some
list.forEach( arr => arr.forEach( a => arrA0.some(v => v === a)))
Arr indexOf
list.forEach( arr => arr.forEach( a => arrA1.indexOf(a)))
Arr sort + index
list.forEach( arr => arr.forEach( a => arrA2[a]))
Arr presorted with remove - splice
listLast.forEach(v => { let b = aclone[v]; aclone.splice(v, 1); })
Arr presorted with remove - set
listLastTwo.forEach(v => { let b = aclonetwo[v]; aclonetwo[v] = null; aclonetwo = aclonetwo.filter(Boolean) })

Run results for: SET has/get vs ARR find/some/indexOf + ARR splice/set search array as found

ARRincludes

Arr find

SET has

Arr some

Arr indexOf

Arr sort + index

Arr presorted with remove - splice

Arr presorted with remove - set