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Run results for:
Object from array: map + Object.fromEntries vs reduce
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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
Object.fromEntries
541.2 Ops/sec
Reduce (reuse object)
632.6 Ops/sec
Script Preparation code:
var array = Array.from({ length: 10001 }, (_, index) => index);
Tests:
Object.fromEntries
Object.fromEntries(array.map((n) => [`db/path/${n}`, null]));
Reduce (reuse object)
array.reduce((acc, n) => { acc[`db/path/${n}`] = null; return acc; }, {});