Run results for: Array filter vs Set delete

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36

Browser: Chrome 131

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

Filter set10

14.3M/s

Filter set1000000

13.7M/s

Filter set1000

13.7M/s

Filter arr10

12.8M/s

Filter arr1000

1.1M/s

Filter arr1000000

146/s

View exact numbers

Test name	Executions per second
✓ Filter set10	14,339,590 Ops/sec
Filter set1000000	13,733,266 Ops/sec
Filter set1000	13,656,576 Ops/sec
Filter arr10	12,760,821 Ops/sec
Filter arr1000	1,053,714 Ops/sec
Filter arr1000000	146 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);