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Delete performance
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<iframe src="https://measurethat.net/Embed?id=623892" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:146.0) Gecko/20100101 Firefox/146.0
Browser:
Firefox 146
Operating system:
Windows
Device Platform:
Desktop
Date tested:
3 months ago
Test name
Executions per second
removeNullish
20.9 Ops/sec
delete
27.3 Ops/sec
Create Array
75.6 Ops/sec
Tests:
removeNullish
const arr = new Array(500000).fill(null).map(() => ({ "item": 42 })) const removeNullish = (obj) => Object.entries(obj).reduce((a, [k, v]) => (v ? ((a[k] = v), a) : a), {}) arr.forEach(object => { object.item = undefined removeNullish(object) })
delete
const arr = new Array(500000).fill(null).map(() => ({ "item": 42 })) arr.forEach(object => { delete object.item })
Create Array
const arr = new Array(500000).fill(null).map(() => ({ "item": 42 })) const removeNullish = (obj) => Object.entries(obj).reduce((a, [k, v]) => (v ? ((a[k] = v), a) : a), {})