Run results for: klona vs structuredClone vs JSON.parse(JSON.stringify())

Run details:

User agent: Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Mobile Safari/537.36

Browser: Chrome Mobile 136

Operating system: Android

Device Platform: Mobile

Date tested: one year ago

klona

4.4M/s

JSON.parse(JSON.stringify())

1.2M/s

Native structuredClone

401K/s

View exact numbers

Test name	Executions per second
✓ klona	4,380,840 Ops/sec
JSON.parse(JSON.stringify())	1,165,241 Ops/sec
Native structuredClone	400,969 Ops/sec

HTML Preparation code:

<script src='https://unpkg.com/klona@2.0.6/json/index.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:

klona
myCopy = klona.klona(MyObject);
Native structuredClone
myCopy = structuredClone(MyObject);
JSON.parse(JSON.stringify())
myCopy = JSON.parse(JSON.stringify(MyObject));

Run results for: klona vs structuredClone vs JSON.parse(JSON.stringify())

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

klona

Native structuredClone

JSON.parse(JSON.stringify())