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Run results for:
Bench flat map vs spread reduce (small array)
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<iframe src="https://measurethat.net/Embed?id=573736" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36
Browser:
Chrome 131
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
one year ago
spread
682K/s
flatmap
353K/s
View exact numbers
Test name
Executions per second
✓
spread
681,866 Ops/sec
flatmap
353,016 Ops/sec
Script Preparation code:
var arr = Array(50).fill([0,0,0])
Tests:
spread
arr.reduce((acc, item) => { acc.push(...item); return acc; }, []);
flatmap
arr.flatMap((item) => { return item; });