Run results for: Map.values().toArray() vs Array.from(Map.values()) vs [...Map.values()]

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.0.0 Safari/537.36

Browser: Chrome 118

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Array.from(Map.values())

39K/s

[...Map.values()]

39K/s

Map.values().toArray()

6K/s

View exact numbers

Test name	Executions per second
✓ Array.from(Map.values())	39,053 Ops/sec
[...Map.values()]	38,988 Ops/sec
Map.values().toArray()	6,268 Ops/sec

Script Preparation code:

const array = Array.from({length: 10_000}, () => Math.floor(Math.random() * 10_000_000));
const map = new Map();
array.forEach((x, i) => map.set(x, i));

Tests:

Map.values().toArray()
return map.values().toArray();
Array.from(Map.values())
return Array.from(map.values());
[...Map.values()]
return [...map.values()];