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Run results for:
flatMap vs reduce flattern array
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Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:151.0) Gecko/20100101 Firefox/151.0
Browser:
Firefox 151
Operating system:
Windows
Device Platform:
Desktop
Date tested:
23 days ago
Test name
Executions per second
reduce with concat
13.0 Ops/sec
flatMap
4393.4 Ops/sec
Script Preparation code:
var arr = Array(10_000).fill([1, 2])
Tests:
reduce with concat
arr.reduce((acc, x) => acc.concat(x), [])
flatMap
arr.flatMap(x => x)