Run results for: Lodash flatten vs nativate flat (depth 1)

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 17_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/121.0.6167.66 Mobile/15E148 Safari/604.1

Browser: Chrome Mobile iOS 121

Operating system: iOS 17.3

Device Platform: Mobile

Date tested: 2 years ago

Native flat

14.6M/s

Lodash flatten

9.4M/s

View exact numbers

Test name	Executions per second
✓ Native flat	14,616,659 Ops/sec
Lodash flatten	9,421,574 Ops/sec

HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Tests:

Lodash flatten
const arr = [1,[2,3,4]]; _.flatten(arr);
Native flat
const arr = [1,[2,3,4]]; arr.flat();