Run results for: Reduce (object reuse) vs For loop

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/118.0

Browser: Firefox 118

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Reduce (reuse object)	1396.4 Ops/sec
For loop	2725.5 Ops/sec

Script Preparation code:

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

Tests:

Reduce (reuse object)
Object.entries(data).reduce((acc, [k, v]) => { acc[k] = v.toString(); return acc; }, {});
For loop
const entries = Object.entries(data); const len = entries.length; const acc = {}; for (let i = 0; i < len; i += 1) { acc[entries[i][0]] = entries[i][1]; }