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Run results for:
k-v Array to Obj
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=537568" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36
Browser:
Chrome 127
Operating system:
Windows
Device Platform:
Desktop
Date tested:
one year ago
Reduce (same obj)
11K/s
Object.fromEntries
2K/s
Reduce (new obj)
46/s
View exact numbers
Test name
Executions per second
✓
Reduce (same obj)
10,836 Ops/sec
Object.fromEntries
1,531 Ops/sec
Reduce (new obj)
46 Ops/sec
Script Preparation code:
var arr = Array.from(Array(10000), (x,i) => [i,i]);
Tests:
Object.fromEntries
Object.fromEntries(arr);
Reduce (same obj)
arr .reduce((acc,[k,v]) => { acc[k] = v; return acc }, {})
Reduce (new obj)
arr .reduce((acc,[k,v]) => ({...acc, [k]: v}), {})