Run results for: Array indexOf and splice vs Set delete - good

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.0.0 Safari/537.36

Browser: Chrome 118

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
indexOf arr10	5816277.5 Ops/sec
delete set10	12221324.0 Ops/sec
indexOf arr30	6415757.5 Ops/sec
delete set30	12544301.0 Ops/sec
indexOf arr99	5991055.5 Ops/sec
delete set100	12133273.0 Ops/sec

Script Preparation code:

function arrayWithLength(length) {
    return Array(length).fill().map((_, i) => i);
}
var arr10 = arrayWithLength(10);
var arr30 = arrayWithLength(30);
var arr100 = arrayWithLength(100);
var set10 = new Set(arr10);
var set30 = new Set(arr30);
var set100 = new Set(arr100);

Tests:

indexOf arr10
const i = arr10.indexOf(9); arr10.splice(i, 1)
delete set10
set10.delete(9);
indexOf arr30
const i = arr30.indexOf(29); arr30.splice(i, 1)
delete set30
set30.delete(29);
indexOf arr100
const i = arr100.indexOf(99); arr100.splice(i, 1)
delete set100
set100.delete(99);

Run results for: Array indexOf and splice vs Set delete - good

indexOf arr10

delete set10

indexOf arr30

delete set30

indexOf arr100

delete set100