Run results for: Array filter vs Set delete

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.121 Safari/537.36

Browser: Chrome 85

Operating system: Mac OS X 10.15.6

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
Filter arr10	11017015.0 Ops/sec
Filter set10	13931367.0 Ops/sec
Filter arr1000	731988.5 Ops/sec
Filter set1000	13704732.0 Ops/sec
Filter arr1000000	75.2 Ops/sec
Filter set1000000	12848109.0 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);

Run results for: Array filter vs Set delete

Filter arr10

Filter set10

Filter arr1000

Filter set1000

Filter arr1000000

Filter set1000000