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Run results for:
reduce vs map + fromEntries vs reduce spread
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Run details:
User agent:
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:138.0) Gecko/20100101 Firefox/138.0
Browser:
Firefox 138
Operating system:
Ubuntu
Device Platform:
Desktop
Date tested:
one year ago
Test name
Executions per second
reduce
2326.5 Ops/sec
map + fromEntries
2103.9 Ops/sec
reduce spread
0.4 Ops/sec
Script Preparation code:
var data = { ...Array.from(Array(10000).keys()) };
Tests:
reduce
Object.entries(data).reduce((acc, [k, v]) => { acc[k] = v.toString(); return acc; }, {});
map + fromEntries
Object.fromEntries(Object.entries(data).map(([k, v]) => ([k, v.toString()])));
reduce spread
Object.entries(data).reduce((acc, [k, v]) => ({ ...acc, [k]: v.toString(), }), {});