Run results for: object.keys map vs for in

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.51 Safari/537.36

Browser: Chrome 99

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
for in	3857399.5 Ops/sec
object.keys map	2824166.0 Ops/sec

Tests:

for in
const list = [] const data = { 1: '100', 2: '200', 3: '300' } for (const key in data) { list.push({ value: key, name: data }) }
object.keys map
const data = { 1: '100', 2: '200', 3: '300' } const list = Object.keys(data).map(it => ({ value: it, name: data[it] }))