Benchmark: JS object merge testing

HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.15/lodash.min.js'></script>

Script Preparation code:

var a = {
    a: 'oh',
    b: 'my'
};
var b = {
    c: 'goddess'
};

Tests:

lodash merge
var c = _.merge(a, b);
object.assign
var c = Object.assign(a, b);
spread
var c = { ...a, ...b };
lodash assign
var c = _.assign(a, b);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
lodash merge
object.assign
spread
lodash assign

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 8 months ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/142.0.0.0 Safari/537.36 Edg/142.0.0.0

Browser/OS: Chrome 142 on Windows

View result in a separate tab

object.assign

58.7M/s

spread

33.7M/s

lodash assign

15.4M/s

lodash merge

15.2M/s

View exact numbers

Test name	Executions per second
✓ object.assign	58,747,392 Ops/sec
spread	33,670,116 Ops/sec
lodash assign	15,387,969 Ops/sec
lodash merge	15,243,019 Ops/sec

JS object merge testing (version: 1)

Comparing performance of: `lodash merge vs object.assign vs spread vs lodash assign`

Created: one year ago by: Registered User

Go to the latest result

lodash merge

object.assign

spread

lodash assign

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

JS object merge testing (version: 1)

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

Created: one year ago by: Registered User

Go to the latest result

lodash merge

object.assign

spread

lodash assign

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Related benchmarks

Comparing performance of: `lodash merge vs object.assign vs spread vs lodash assign`