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

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/141.0.0.0 Safari/537.36

Browser: Chrome 141

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 11 months ago

Benchmark engine: Benchmark.js

spread

48.4M/s

object.assign

29.7M/s

lodash assign

11.2M/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 assign
var a = { a: 'oh', b: [1, 2, 3] }; var b = { b: [2, 3, 4] }; var c = _.assign({}, 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 };