Run results for: deepmerge vs Object.assign

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 11_4_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.128 Safari/537.36

Browser: Chrome 89

Operating system: Mac OS X 11.4.0

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
deepmerge	472735.7 Ops/sec
Object.assign	4232488.0 Ops/sec

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/deepmerge@4.2.2/dist/umd.js"></script>

Tests:

deepmerge
var a = { a: 'oh', b: 'my', c: { a: 'a', b: { c: 'c' } } }; var b = { c: { b: { d: 'a' }, c: { d: 'd' } } }; var c = deepmerge({}, a, b);
Object.assign
var a = { a: 'oh', b: 'my', c: { a: 'a', b: { c: 'c' } } }; var b = { c: { b: { d: 'a' }, c: { d: 'd' } } }; var c = Object.assign({}, a, b);
Spread operator
var a = { a: 'oh', b: 'my', c: { a: 'a', b: { c: 'c' } } }; var b = { c: { b: { d: 'a' }, c: { d: 'd' } } }; var c = {...a, ...b};