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Run results for:
foreach for vs promise.all for big arrays
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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 Edg/131.0.0.0
Browser:
Chrome 131
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
one year ago
Test name
Executions per second
all
5082.5 Ops/sec
each
8839.0 Ops/sec
Script Preparation code:
const quantity = 1000; const array = Array(quantity) .fill({ teste: true }) .map((value, index) => ({ id: index + 1, ...value })); async function all() { return Promise.all( array.map(async (ar) => { const value = ar.index * Math.ceil(Math.random, quantity); return { ...ar, value }; }) ); }; async function each() { return array.map((ar) => { const value = ar.index * Math.ceil(Math.random, quantity); return { ...ar, value }; }); };
Tests:
all
all()
each
each()