Run results for: map over Object (or Record in TS) vs Map

Run details:

User agent: Mozilla/5.0 (Android 13; Mobile; rv:136.0) Gecko/136.0 Firefox/136.0

Browser: Firefox Mobile 136

Operating system: Android

Device Platform: Mobile

Date tested: one year ago

Obj / Object.entries()

1K/s

Map / spread

924/s

Map / Array.from()

904/s

View exact numbers

Tests:

Obj / Object.entries()
let obj = {}; for (let i = 0; i < 10000; i++) { obj[i] = i; } let tuples = Object.entries(obj).map(([k, v]) => [k, v]);
Map / spread
let map = new Map(); for (let i = 0; i < 10000; i++) { map.set(i, i); } let tuples = [...map].map(([k, v]) => [k, v]);
Map / Array.from()
let map = new Map(); for (let i = 0; i < 10000; i++) { map.set(i, i); } let tuples = Array.from(map).map(([k, v]) => [k, v]);