Run results for: Object.entries + reduce VS Object.keys + forEach (fixed)

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.61 Safari/537.36

Browser: Chrome 94

Operating system: Mac OS X 10.14.3

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
Object.entries + reduce	345627.7 Ops/sec
Object.keys + forEach	473403.6 Ops/sec

Script Preparation code:

window.obj = {
    a: 1,
    b: 2,
    c: 3,
    d: 4,
    e: 5,
}

Tests:

Object.entries + reduce
Object.entries(obj).reduce((acc, [k, v]) => ({ [k]: v, ...acc }), {});
Object.keys + forEach
const newObj = {}; Object.keys(obj).forEach((k) => newObj[k] = obj[k]);