Run results for: Iterate Array.from(n, () => {}) vs [...Array(n)]

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:109.0) Gecko/20100101 Firefox/111.0

Browser: Firefox 111

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Array.from()	31213.9 Ops/sec
[...Array(n)]	86624.2 Ops/sec

Tests:

Array.from()
const arr = Array.from({ length: 1000 }, (_value, index) => { return index % 2 === 0 && {a: 1, b: 1}; }).filter(Boolean)
[...Array(n)]
const arr1 = [...Array(1000)].reduce((items, _value, index) => { if (index % 2 === 0) { items.push({a: 1, b: 1}); } return items; }, []);