Run results for: Lodash cloneDeep vs structuredClone vs Json.stringify

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.0 Safari/537.36

Browser: Chrome 135

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

Lodash cloneDeep

1.8M/s ±0.20%

Json.stringify

1.6M/s ±0.22%

structuredClone

722K/s ±0.99%

View exact numbers

Test name	Executions per second
✓ Lodash cloneDeep	1,819,495 Ops/sec ±0.20%
Json.stringify	1,563,001 Ops/sec ±0.22%
structuredClone	721,920 Ops/sec ±0.99%

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);
structuredClone
myCopy = structuredClone(MyObject);
Json.stringify
myCopy = JSON.parse(JSON.stringify(MyObject));