Run results for: Lodash cloneDeep vs structuredClone vs naive JSON.stringify

Run details:

User agent: Mozilla/5.0 (Android 13; Mobile; rv:120.0) Gecko/120.0 Firefox/120.0

Browser: Firefox Mobile 120

Operating system: Android

Device Platform: Mobile

Date tested: 2 years ago

Lodash cloneDeep

747K/s

JSON.stringify

321K/s

Native structuredClone

186K/s

View exact numbers

Test name	Executions per second
✓ Lodash cloneDeep	746,973 Ops/sec
JSON.stringify	320,940 Ops/sec
Native structuredClone	185,939 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 myCopy = null;

Tests:

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

Run results for: Lodash cloneDeep vs structuredClone vs naive JSON.stringify

https://developer.mozilla.org/en-US/docs/Web/API/structuredClone

Lodash cloneDeep

Native structuredClone

JSON.stringify