Run results for: Object.fromEntries vs reduce 2

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/138.0.0.0 Safari/537.36

Browser: Chrome 138

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Reduce (reuse object)

38/s

Object.fromEntries

24/s

View exact numbers

Test name	Executions per second
✓ Reduce (reuse object)	38 Ops/sec
Object.fromEntries	24 Ops/sec

Script Preparation code:

var data = Array.from(Array(1000000).keys());

Tests:

Object.fromEntries
Object.fromEntries(data.map((key) => ([key, key])));
Reduce (reuse object)
data.reduce((acc, k) => { acc[k] = k.toString(); return acc; }, {});