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

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.100 YaBrowser/19.7.0.2015 Yowser/2.5 Safari/537.36

Browser: Yandex Browser 19

Operating system: Mac OS X 10.12.6

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
lodash merge	1880190.0 Ops/sec
object.assign	4105383.0 Ops/sec
spread	3499434.0 Ops/sec

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: 'my' }; var b = { c: 'goddess' }; var c = _.merge(a, b);
object.assign
var a = { a: 'oh', b: 'my' }; var b = { c: 'goddess' }; var c = Object.assign(a, b);
spread
var a = { a: 'oh', b: 'my' }; var b = { c: 'goddess' }; var c = { ...a, ...b };