Run results for: omit (reduce) vs omit (Object.fromEntries)

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/132.0.0.0 Safari/537.36 OPR/117.0.0.0

Browser: Opera 117

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

omit

20.8M/s

omit2

4.8M/s

View exact numbers

Test name	Executions per second
✓ omit	20,824,730 Ops/sec
omit2	4,754,117 Ops/sec

HTML Preparation code:

<!--your preparation HTML code goes here-->

Script Preparation code:

function omit(obj, keys) {
    return keys.reduce((a, e) => {
        const {
            [e]: _, ...rest
        } = a;
        return rest;
    }, obj);
}

function omit2(obj, keys) {
    return Object.fromEntries(Object.entries(obj).filter(([k]) => !keys.includes(k)));
}

Tests:

omit
omit({ a: 1, b: 2, c: 3 }, ['b']);
omit2
omit2({ a: 1, b: 2, c: 3 }, ['b']);