Run results for: Lodash clone vs cloneDeep

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.75 Safari/537.36

Browser: Chrome 73

Operating system: Linux

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
Lodash cloneDeep	34038.3 Ops/sec
Lodash clone	167721.2 Ops/sec
new Object	2854653.8 Ops/sec
Custom deep spread	299760.9 Ops/sec
Object assign	248078.1 Ops/sec
Custom deep assign	95661.1 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,
  myDate: new Date(),
  myDate2: new Date(),
  myDate3: new Date(),
  myDate4: new Date(),
  myDate5: new Date(),
  myDate6: new Date(),
  myDate7: new Date(),
  myDate8: new Date(),
  myDate9: new Date(),
  myDate10: new Date(),
  jayson: {
    stringify: 'JSON.stringify() method converts a JavaScript value to a JSON string....',
    parse: 'JSON.parse() method parses a JSON string...'
  },
  jayson2: {
    stringify: 'JSON.stringify() method converts a JavaScript value to a JSON string....',
    parse: 'JSON.parse() method parses a JSON string...'
  },
  jayson3: {
    stringify: 'JSON.stringify() method converts a JavaScript value to a JSON string....',
    parse: 'JSON.parse() method parses a JSON string...'
  },
  jayson4: {
    stringify: 'JSON.stringify() method converts a JavaScript value to a JSON string....',
    parse: 'JSON.parse() method parses a JSON string...'
  },
  jayson5: {
    stringify: 'JSON.stringify() method converts a JavaScript value to a JSON string....',
    parse: 'JSON.parse() method parses a JSON string...'
  },
  jayson6: {
    stringify: 'JSON.stringify() method converts a JavaScript value to a JSON string....',
    parse: 'JSON.parse() method parses a JSON string...'
  },
  jayson7: {
    stringify: 'JSON.stringify() method converts a JavaScript value to a JSON string....',
    parse: 'JSON.parse() method parses a JSON string...'
  },
  jayson8: {
    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);
Lodash clone
myCopy = _.clone(MyObject);
new Object
myCopy = {...MyObject}
Custom deep spread
myCopy = {...MyObject} myCopy.jayson = {...myCopy.jayson} myCopy.jayson2 = {...myCopy.jayson2} myCopy.jayson3 = {...myCopy.jayson3} myCopy.jayson4 = {...myCopy.jayson4} myCopy.jayson5 = {...myCopy.jayson5} myCopy.jayson6 = {...myCopy.jayson6} myCopy.jayson7 = {...myCopy.jayson7} myCopy.jayson7 = {...myCopy.jayson8}
Object assign
myCopy = Object.assign({}, MyObject)
Custom deep assign
myCopy = Object.assign({}, MyObject) myCopy.jayson = Object.assign({}, myCopy.jayson) myCopy.jayson2 = Object.assign({}, myCopy.jayson2) myCopy.jayson3 = Object.assign({}, myCopy.jayson3) myCopy.jayson4 = Object.assign({}, myCopy.jayson4) myCopy.jayson5 = Object.assign({}, myCopy.jayson5) myCopy.jayson6 = Object.assign({}, myCopy.jayson6) myCopy.jayson7 = Object.assign({}, myCopy.jayson7) myCopy.jayson7 = Object.assign({}, myCopy.jayson8)

Run results for: Lodash clone vs cloneDeep

Lodash cloneDeep

Lodash clone

new Object

Custom deep spread

Object assign

Custom deep assign