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/123.0.0.0 Safari/537.36

Browser: Chrome 123

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Benchmark engine: Benchmark.js

Filter set10

9.5M/s

Filter set1000000

9.5M/s

Filter set1000

9.4M/s

Filter arr10

7.6M/s

Filter arr1000

658K/s

Filter arr1000000

84/s

View exact numbers

Test name	Executions per second
✓ Filter set10	9,524,918 Ops/sec
Filter set1000000	9,458,328 Ops/sec
Filter set1000	9,413,751 Ops/sec
Filter arr10	7,577,032 Ops/sec
Filter arr1000	657,520 Ops/sec
Filter arr1000000	84 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);