Run results for: Object.fromEntries vs reduce vs classic for v3

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36 Edg/147.0.0.0

Browser: Chrome 147

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 3 months ago

For

1K/s

Reduce (reuse object)

1K/s

Object.fromEntries

750/s

View exact numbers

Script Preparation code:

const data = Array.from(Array(10000).keys());

Tests:

Object.fromEntries
Object.fromEntries(data.map((idx) => [`id-${idx}`, idx]));
Reduce (reuse object)
data.reduce((acc, idx) => { acc[`id-${idx}`] = idx; return acc; }, {});
For
const a = {} for (let idx of data) { a[`id-${idx}`] = idx; }