Run results for: lodash merge vs object.assign vs spread with arrays

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.0.0.0 Safari/537.36

Browser: Chrome 134

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

object.assign

43.8M/s

spread

37.4M/s

lodash merge

2.4M/s

View exact numbers

HTML Preparation code:

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

Tests:

lodash merge
var a = { a: 'oh', b: [1, 2, 3] }; var b = { b: [2, 3, 4] }; var c = _.merge(a, b);
object.assign
var a = { a: 'oh', b: [1, 2, 3] }; var b = { b: [2, 3, 4] }; var c = Object.assign(a, b);
spread
var a = { a: 'oh', b: [1, 2, 3] }; var b = { b: [2, 3, 4] }; var c = { ...a, ...b };