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Run results for:
Reflect.set vs Object.assign vs Direct assignment
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<iframe src="https://measurethat.net/Embed?id=598908" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.0 Mobile Safari/537.36
Browser:
Chrome Mobile 135
Operating system:
Android
Device Platform:
Mobile
Date tested:
one year ago
Direct assignment
105K/s
Reflect.set
19K/s
Object.assign
929/s
View exact numbers
Test name
Executions per second
✓
Direct assignment
104,683 Ops/sec
Reflect.set
19,038 Ops/sec
Object.assign
929 Ops/sec
Script Preparation code:
var numbers = Array(1000).fill(null).map((x, i) => i.toString());
Tests:
Reflect.set
numbers.reduce((acc, n) => Reflect.set(acc, n, n) && acc, {});
Object.assign
numbers.reduce((acc, n) => Object.assign(acc, { [n]: n }), {});
Direct assignment
numbers.reduce((acc, n) => { acc[n] = n; return acc }, {});