Run results for: Object.fromEntries vs reduce vs classic for2

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/148.0.0.0 Safari/537.36 Edg/148.0.0.0

Browser: Chrome 148

Operating system: Windows

Device Platform: Desktop

Date tested: one month ago

Object.fromEntries

3K/s

For

749/s

Reduce (reuse object)

694/s

View exact numbers

Script Preparation code:

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

Tests:

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; }