Run results for: lodash clonedeep vs json.parse(stringify()) vs structuredClone

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36

Browser: Chrome 126

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Lodash CloneDeep

1.5M/s

JSON Clone

1.2M/s

structuredClone

686K/s

View exact numbers

Test name	Executions per second
✓ Lodash CloneDeep	1,472,396 Ops/sec
JSON Clone	1,215,980 Ops/sec
structuredClone	685,872 Ops/sec

HTML Preparation code:

<script src='https://cdn.jsdelivr.net/npm/lodash@4.17.21/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...'
  }
};

Tests:

Lodash CloneDeep
myCopy = _.cloneDeep(MyObject);
JSON Clone
myCopy = JSON.parse(JSON.stringify(MyObject));
structuredClone
myCopy = structuredClone(MyObject)