Benchmark: Deep Clone Performance - JSON vs Lodash vs Ramda vs Native

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 Preparation code:

var obj = {a: "hello", c: "test", po: 33, arr: [1, 2, 3, 4], anotherObj: {a: 33, str: "whazzup"}};

var myCopy = null;

Tests:

JSON Stringfy
myCopy = JSON.parse(JSON.stringify(obj));
Lodash cloneDeep
myCopy = _.cloneDeep(obj);
Ramda Copy
myCopy = R.clone(obj);
Recursive Copy
var deepCopy = function(obj) { var out = Array.isArray(obj) ? [] : {}; for (var key in obj) { var v = obj[key]; out[key] = (typeof v === 'object') ? deepCopy(v) : v; } return out; }; myCopy = deepCopy(obj);
Recursive Copy Distinct
var deepCopy = function(block) { var out = null; if (Array.isArray(block)) { out = []; for (var index = 0; index < block.length; ++index) { var subArray = block[index]; out.push((typeof subArray === 'object') ? deepCopy(subArray) : subArray); } } else { out = {}; for (var key in block) { var subObject = block[key]; out[key] = (typeof subObject === 'object') ? deepCopy(subObject) : subObject; } } return out; }; myCopy = deepCopy(obj);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
JSON Stringfy
Lodash cloneDeep
Ramda Copy
Recursive Copy
Recursive Copy Distinct

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 10 months ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36

Browser/OS: Chrome 119 on Windows

View result in a separate tab

Test name	Executions per second
JSON Stringfy	1049949.0 Ops/sec
Lodash cloneDeep	965556.3 Ops/sec
Ramda Copy	1111836.0 Ops/sec
Recursive Copy	1462616.0 Ops/sec
Recursive Copy Distinct	2770265.0 Ops/sec

Deep Clone Performance - JSON vs Lodash vs Ramda vs Native (version: 0)

Comparing performance of: JSON Stringfy vs Lodash cloneDeep vs Ramda Copy vs Recursive Copy vs Recursive Copy Distinct

Created: 6 years ago by: Registered User

Jump to the latest result

JSON Stringfy

Lodash cloneDeep

Ramda Copy

Recursive Copy

Recursive Copy Distinct

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A