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Run results for:
flatMap vs reduce with spread vs reduce with push
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<iframe src="https://measurethat.net/Embed?id=522056" 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/124.0.0.0 Safari/537.36
Browser:
Chrome 124
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
2 years ago
reduce with push
34K/s
flatMap
5K/s
reduce with spread
29/s
View exact numbers
Test name
Executions per second
✓
reduce with push
34,149 Ops/sec
flatMap
5,216 Ops/sec
reduce with spread
29 Ops/sec
Script Preparation code:
var arr = Array(10_000).fill(0)
Tests:
reduce with spread
arr.reduce((acc, x) => [...acc, x], [])
flatMap
arr.flatMap(x => [x])
reduce with push
arr.reduce((acc, x) => { acc.push(x); return acc; }, [])