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

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 / Array.from()
let map = new Map(); for (let i = 0; i < 10000; i++) { map.set(i.toString(), i); } let tuples = Array.from(map.entries());

Rendered benchmark preparation results:

Previous results

Test case name	Result
Obj / Object.entries()
Map / Array.from()

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/136.0.0.0 Safari/537.36

Browser/OS: Chrome 136 on Mac OS X 10.15.7

Obj / Object.entries()

3K/s

Map / Array.from()

3K/s

View exact numbers

Test name	Executions per second
✓ Obj / Object.entries()	3,310 Ops/sec
Map / Array.from()	2,779 Ops/sec

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