Run results for: Deep Clone Performance - JSON vs Lodash vs Ramda vs Native

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 16_5 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.5 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 16

Operating system: iOS 16.5

Device Platform: Mobile

Date tested: one year ago

Test name	Executions per second
JSON Stringfy	1815708.0 Ops/sec
Lodash cloneDeep	907174.6 Ops/sec
Ramda Copy	724132.2 Ops/sec
Recursive Copy	1172853.0 Ops/sec
Recursive Copy Distinct	1959524.0 Ops/sec

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);

Run results for: Deep Clone Performance - JSON vs Lodash vs Ramda vs Native

JSON Stringfy

Lodash cloneDeep

Ramda Copy

Recursive Copy

Recursive Copy Distinct