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Run results for:
fromEntries vs reduce for building objects
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Run details:
User agent:
Mozilla/5.0 (X11; Ubuntu; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/149.0.0.0 Safari/537.36
Browser:
Chrome 149
Operating system:
Ubuntu
Device Platform:
Desktop
Date tested:
one month ago
fromEntries
1K/s
reduce
41/s
View exact numbers
Test name
Executions per second
✓
fromEntries
1,149 Ops/sec
reduce
41 Ops/sec
HTML Preparation code:
<!--your preparation HTML code goes here-->
Script Preparation code:
var array = Array(10_000).fill().map((_,i)=>({id:i}));
Tests:
reduce
array.reduce((acc, c) => ({ ...acc, [c.id]: c }), {});
fromEntries
Object.fromEntries(array.map((obj) => [obj.id, obj]))