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Run results for:
lodash flatten vs array.flat 2
lodash flatten vs spread
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=616450" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/140.0.0.0 Safari/537.36
Browser:
Chrome 140
Operating system:
Windows
Device Platform:
Desktop
Date tested:
11 months ago
concat + spread
2K/s
lodash flatten
477/s
arr .flat
275/s
View exact numbers
Test name
Executions per second
✓
concat + spread
2,304 Ops/sec
lodash flatten
477 Ops/sec
arr .flat
275 Ops/sec
HTML Preparation code:
<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>
Script Preparation code:
const arr = new Array(3000).fill(new Array(100).fill("foo"));
Tests:
arr .flat
const flattened = arr.flat();
lodash flatten
const flattened = _.flatten(arr);
concat + spread
const flattened = [].concat(...arr);