Run results for: Lodash cloneDeep vs clone

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:135.0) Gecko/20100101 Firefox/135.0

Browser: Firefox 135

Operating system: Windows

Device Platform: Desktop

Date tested: 2 months ago

Test name	Executions per second
Lodash cloneDeep	1105071.6 Ops/sec
Vanilla clone	4147275.8 Ops/sec

HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

​x
 
​
<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.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;

 
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);
myCopy = _.cloneDeep(MyObject);

Vanilla clone

function clone(obj) {
    const clone = Object.create(Object.getPrototypeOf(obj));

    Object.getOwnPropertyNames(obj).forEach(key => {
        Object.defineProperty(clone, key, Object.getOwnPropertyDescriptor(obj, key));
    });

    return clone;
}

myCopy = clone(MyObject);

 
function clone(obj) {    const clone = Object.create(Object.getPrototypeOf(obj));​    Object.getOwnPropertyNames(obj).forEach(key => {        Object.defineProperty(clone, key, Object.getOwnPropertyDescriptor(obj, key));    });​    return clone;}​myCopy = clone(MyObject);