Benchmark: copy typed array with Array.from() vs new Array()

Tests:

new Array()
const ary = new Uint32Array(1000); const res = new Array(1000); for (let i = 0; i < ary.length; ++i) { res[i] = ary[i]; }
Array.from()
const ary = new Uint32Array(1000); const res = Array.from(ary);

Rendered benchmark preparation results:

Previous results

Test case name	Result
new Array()
Array.from()

Latest run results:

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

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/149.0.0.0 Safari/537.36

Browser/OS: Chrome 149 on Linux

new Array()

254K/s

Array.from()

38K/s

View exact numbers

Test name	Executions per second
✓ new Array()	254,443 Ops/sec
Array.from()	37,652 Ops/sec

copy typed array with Array.from() vs new Array() (version: 1)