Run results for: reduce vs map + fromEntries

Run details:

User agent: Mozilla/5.0 (Android 11; Mobile; rv:93.0) Gecko/93.0 Firefox/93.0

Browser: Firefox Mobile 93

Operating system: Android

Device Platform: Mobile

Date tested: 3 years ago

Test name	Executions per second
reduce	263.4 Ops/sec
map + fromEntries	164.3 Ops/sec

Script Preparation code:

var data = { ...Array.from(Array(10000).keys()) };

Tests:

reduce
Object.entries(data).reduce((acc, [k, v]) => { acc[k] = v.toString(); return acc; }, {});
map + fromEntries
Object.fromEntries(Object.entries(data).map(([k, v]) => ([k, v.toString()])));