Run results for: Object cloning with Lodash clone vs cloneDeep vs merge vs assign vs ES6 object spread vs ES6 Object.assign AWD AWd AWd AWd AWd Wd AW d

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.5060.114 Safari/537.36

Browser: Chrome 103

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Lodash clone	966574.3 Ops/sec
Lodash cloneDeep	176891.3 Ops/sec
Lodash merge	132865.5 Ops/sec
Lodash assign	1003788.0 Ops/sec
ES6 spread	6605555.0 Ops/sec
ES6 Object assign	1981054.0 Ops/sec

HTML Preparation code:

<script src='https://cdn.jsdelivr.net/npm/lodash@4.17.21/index.min.js'></script>

Script Preparation code:

var o = {
 a: {
   b: 1,
   c: 2,
   d: 3,
   j: {
     k: [1,2,3],
     l: [4,5,6]
   },
 },
 e: [1,2,3,4,5,6],
 f: 1,
 g: {
   h: 1,
 }
}

Tests:

Lodash clone
const a = _.clone(o)
Lodash cloneDeep
const a = _.cloneDeep(o)
Lodash merge
const a = _.merge({}, o)
Lodash assign
const a = _.assign({}, o)
ES6 spread
const a = { ...o }
ES6 Object assign
const a = Object.assign({}, o)

Run results for: Object cloning with Lodash clone vs cloneDeep vs merge vs assign vs ES6 object spread vs ES6 Object.assign AWD AWd AWd AWd AWd Wd AW d

Lodash clone

Lodash cloneDeep

Lodash merge

Lodash assign

ES6 spread

ES6 Object assign