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Run results for:
Reduce Destructuring vs Assertion
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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/122.0.0.0 Safari/537.36
Browser:
Chrome 122
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
2 years ago
Test name
Executions per second
{ ...acc, [x]: true }
1721.7 Ops/sec
acc[x] = true;
22578.7 Ops/sec
Script Preparation code:
var arr = Array(10_000).fill(0);
Tests:
{ ...acc, [x]: true }
arr.reduce((acc, x) => ({ ...acc, [x]: true }), {})
acc[x] = true;
arr.reduce((acc, x) => { acc[x] = true; return acc; }, {})