Benchmark: lodash merge vs deepmerge vs ramda merge

HTML Preparation code:


<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>
<script src='https://unpkg.com/deepmerge@3.2.0/dist/umd.js'></script>
<script src="//cdn.jsdelivr.net/npm/ramda@latest/dist/ramda.min.js"></script>

Tests:

lodash merge
var a = { a: 'oh', b: 'my', c: { a: 'a', b: { c: 'c' } } }; var b = { c: { b: { d: 'a' }, c: { d: 'd' } } }; var c = _.merge({}, 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 = deepmerge({}, a, b);
ramda
var a = { a: 'oh', b: 'my', c: { a: 'a', b: { c: 'c' } } }; var b = { c: { b: { d: 'a' }, c: { d: 'd' } } }; var c = R.mergeDeepLeft(a, b);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
lodash merge
object.assign
ramda

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.0.0 Safari/537.36 Edg/113.0.1774.42

Browser/OS: Chrome 113 on Windows

View result in a separate tab

Test name	Executions per second
lodash merge	272211.4 Ops/sec
object.assign	1573783.0 Ops/sec
ramda	1372400.0 Ops/sec

lodash merge vs deepmerge vs ramda merge (version: 0)

Comparing performance of: lodash merge vs object.assign vs ramda

Created: 2 years ago by: Guest

Jump to the latest result

lodash merge

object.assign

ramda

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A