Run results for: Uniq by sorting test

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36 Edg/126.0.0.0

Browser: Chrome 126

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Lodash uniqBy	3437.6 Ops/sec
Custom uniq array	823.6 Ops/sec

HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.21/lodash.min.js'></script>

Script Preparation code:

var myArr = Array.from({
    length: 16000
}, () => ({ value: Math.floor(Math.random() * 1000) }));

var myCopy = null;

Tests:

Lodash uniqBy
myCopy = _.uniqBy(myArr, 'value');
Custom uniq array
const itemIdSet = new Set(myArr.map(item => item.value)); const uniqueItems = []; itemIdSet.forEach(value => { const uniqueItem = myArr.find(item => item.value === value); if (uniqueItem) uniqueItems.push(uniqueItem); }); myCopy = uniqueItems;