Run results for: Lodash uniqBy vs Map destructuring

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/111.0.0.0 Safari/537.36

Browser: Chrome 111

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Lodash uniqBy	3817.8 Ops/sec
new Map() Destructuring	1766.9 Ops/sec

HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

​x
 
​
<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Script Preparation code:

var myArr = Array.from({
    length: 16000
}, () => ({ someData: 123, value: Math.floor(Math.random() * 1000) }));

var myCopy = null;

 
var myArr = Array.from({    length: 16000}, () => ({ someData: 123, value: Math.floor(Math.random() * 1000) }));​var myCopy = null;

Tests:

Lodash uniqBy
myCopy = _.uniqBy(myArr, 'value').map(({ value }) => value);
myCopy = _.uniqBy(myArr, 'value').map(({ value }) => value);
new Map() Destructuring
myCopy = [...new Map(myArr.map((el) => [el.value, el])).values()];
myCopy = [...new Map(myArr.map((el) => [el.value, el])).values()];