Benchmark: Lodash cloneDeep vs JSON Clone vs Ramda Clone vs hand rolled vs spread vs obj.assign vs structuredClone

HTML Preparation code:


<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/ramda/0.25.0/ramda.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/clone/2.1.2/clone.min.js"></script>

Script Preparation code:

var MyObject = {
  description: 'Creates a deep copy of source, which should be an object or an array.',
  myNumber: 123456789,
  myBoolean: true,
  jayson: {
    stringify: 'JSON.stringify() method converts a JavaScript value to a JSON string....',
    parse: 'JSON.parse() method parses a JSON string...'
  }
};

var myCopy = null;

Tests:

Lodash cloneDeep
myCopy = _.cloneDeep(MyObject);
Json clone
myCopy = JSON.parse(JSON.stringify(MyObject));
Ramda clone
myCopy = R.clone(MyObject);
hand rolled
const cp=(obj)=>"object" === typeof obj ? Object.fromEntries(Object.entries(obj).map(([k,v])=>[k,cp(v)])) : obj myCopy = cp(MyObject)
spread
myCopy = {...MyObject}
obj.assign
myCopy = Object.assign({}, MyObject)
structuredClone
myCopy = structuredClone(MyObject);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Lodash cloneDeep
Json clone
Ramda clone
hand rolled
spread
obj.assign
structuredClone

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 6 months ago)

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36

Browser/OS: Chrome 119 on Linux

View result in a separate tab

Test name	Executions per second
Lodash cloneDeep	871915.7 Ops/sec
Json clone	656257.0 Ops/sec
Ramda clone	1365005.0 Ops/sec
hand rolled	796986.0 Ops/sec
spread	8569201.0 Ops/sec
obj.assign	3965944.0 Ops/sec
structuredClone	339913.1 Ops/sec

Lodash cloneDeep vs JSON Clone vs Ramda Clone vs hand rolled vs spread vs obj.assign vs structuredClone (version: 0)

just benchmarking things

Comparing performance of: Lodash cloneDeep vs Json clone vs Ramda clone vs hand rolled vs spread vs obj.assign vs structuredClone

Created: 6 months ago by: Registered User

Jump to the latest result

Lodash cloneDeep

Json clone

Ramda clone

hand rolled

spread

obj.assign

structuredClone

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A