Run results for: Lodash cloneDeep vs JSON Clone vs Object Spread

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.71 Safari/537.36

Browser: Chrome 94

Operating system: Mac OS X 10.14.6

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
Lodash cloneDeep	7115.0 Ops/sec
Json clone	806.2 Ops/sec
Spread Object Map	60512.6 Ops/sec

HTML Preparation code:


<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 myArray = [];

for (let i = 0; i < 1000; i++) {
  myArray.push(MyObject);
}

var myCopy = null;

Tests:

Lodash cloneDeep
myCopy = _.cloneDeep(myArray);
Json clone
myCopy = JSON.parse(JSON.stringify(myArray));
Spread Object Map
myCopy = myArray.map((e) => ({ ...e }))

Run results for: Lodash cloneDeep vs JSON Clone vs Object Spread

Lodash cloneDeep

Json clone

Spread Object Map