Run results for: Lodash cloneDeep vs structuredClone vs JSON encoding

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/129.0.6668.69 Mobile/15E148 Safari/604.1

Browser: Chrome Mobile iOS 129

Operating system: iOS 18.0

Device Platform: Mobile

Date tested: 2 years ago

Benchmark engine: Benchmark.js

Lodash cloneDeep

2.2M/s ±0.56%

JSON encoding

1.8M/s ±0.59%

Native structuredClone

792K/s ±0.79%

View exact numbers

Test name	Executions per second
✓ Lodash cloneDeep	2,204,314 Ops/sec ±0.56%
JSON encoding	1,752,655 Ops/sec ±0.59%
Native structuredClone	792,090 Ops/sec ±0.79%

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 encoding
myCopy = JSON.parse(JSON.stringify(MyObject))

Run results for: Lodash cloneDeep vs structuredClone vs JSON encoding

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

Lodash cloneDeep

Native structuredClone

JSON encoding