Benchmark: map over Object (or Record in TS) vs Map clone

Tests:

Obj / Object.entries()
let obj = {}; for (let i = 0; i < 1000000; 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 < 1000000; 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 < 1000000; i++) { map.set(i, i); } let tuples = Array.from(map).map(([k, v]) => [k, v]);

Rendered benchmark preparation results:

Previous results

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36

Browser/OS: Chrome 130 on Mac OS X 10.15.7

Map / Array.from()

8/s

Map / spread

8/s

Obj / Object.entries()

6/s

View exact numbers

map over Object (or Record in TS) vs Map clone (version: 1)