Run results for: Lodash cloneDeep vs JSON stringify vs structuredClone

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/137.0.0.0 Safari/537.36

Browser: Chrome 137

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Json stringify

2.0M/s

Lodash cloneDeep

689K/s

structuredClone

419K/s

View exact numbers

Test name	Executions per second
✓ Json stringify	2,026,923 Ops/sec
Lodash cloneDeep	688,929 Ops/sec
structuredClone	419,268 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);
Json stringify
myCopy = JSON.stringify(MyObject);
structuredClone
mycopy = structuredClone(MyObject)