Run results for: Array filter vs Set delete

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36

Browser: Chrome 124

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Benchmark engine: Benchmark.js

Filter set10

18.3M/s

Filter set1000

17.9M/s

Filter set1000000

17.8M/s

Filter arr10

11.9M/s

Filter arr1000

1.1M/s

Filter arr1000000

157/s

View exact numbers

Test name	Executions per second
✓ Filter set10	18,279,192 Ops/sec
Filter set1000	17,928,804 Ops/sec
Filter set1000000	17,759,532 Ops/sec
Filter arr10	11,887,613 Ops/sec
Filter arr1000	1,114,850 Ops/sec
Filter arr1000000	157 Ops/sec

Script Preparation code:

function arrayWithLength(length) {
    return Array(length).fill().map((_, i) => i);
}
var arr10 = arrayWithLength(10);
var arr1000 = arrayWithLength(1000);
var arr1000000 = arrayWithLength(1000000);
var set10 = new Set(arr10);
var set1000 = new Set(arr1000);
var set1000000 = new Set(arr1000000);

Tests:

Filter arr10
arr10.filter(i => i === 5);
Filter set10
set10.delete(5);
Filter arr1000
arr1000.filter(i => i === 500);
Filter set1000
set1000.delete(500);
Filter arr1000000
arr1000000.filter(i => i === 500000);
Filter set1000000
set1000000.delete(500000);