Run results for: Lodash cloneDeep vs Custom Recursive cloneDeep

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36

Browser: Chrome 131

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Lodash cloneDeep	1188744.0 Ops/sec
Custom Recursive cloneDeep	4809771.0 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...'
  }
};

function cloneDeep(obj) {
  if (obj === null || typeof obj !== 'object') {
    return obj
  }
  if (obj instanceof Date) {
    return new Date(obj)
  }
  if (obj instanceof RegExp) {
    return new RegExp(obj)
  }
  if (Array.isArray(obj)) {
    return obj.map(v => cloneDeep(v))
  }

  const clonedObj = {}
  for (const key in obj) {
    if (Object.prototype.hasOwnProperty.call(obj, key)) {
      clonedObj[key] = cloneDeep(obj[key])
    }
  }
  return clonedObj
}

var myCopy = null;

Tests:

Lodash cloneDeep
myCopy = _.cloneDeep(MyObject);
Custom Recursive cloneDeep
myCopy = cloneDeep(MyObject);

Run results for: Lodash cloneDeep vs Custom Recursive cloneDeep

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

Lodash cloneDeep

Custom Recursive cloneDeep