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Run results for:
flatMap vs reduce vs filter.map v2
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Run details:
User agent:
Mozilla/5.0 (X11; Linux x86_64; rv:132.0) Gecko/20100101 Firefox/132.0
Browser:
Firefox 132
Operating system:
Linux
Device Platform:
Desktop
Date tested:
one year ago
Test name
Executions per second
flatMap()
2991171.0 Ops/sec
reduce()
11311389.0 Ops/sec
filter().map()
5926202.0 Ops/sec
Script Preparation code:
var arr = Array.from({length: 20}, () => Math.floor(Math.random() * 100));;
Tests:
flatMap()
arr.flatMap((e) => e > 50 ? e / 2 : []);
reduce()
arr.reduce((acc, curr) => curr > 50 ? (acc.push(curr / 2), acc) : acc, []);
filter().map()
arr.filter((e) => e > 50).map((e) => e / 2);