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Run results for: Object cloning with Lodash clone vs cloneDeep vs merge vs ES6 object spread vs ES6 Object.assign BIG

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Run details:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.79 Safari/537.36
Chrome 79
Linux
Desktop
5 years ago
Test name Executions per second
Lodash clone 1012929.8 Ops/sec
Lodash cloneDeep 139049.4 Ops/sec
Lodash merge 89523.1 Ops/sec
ES6 spread 10801710.0 Ops/sec
ES6 Object.assign 3226088.0 Ops/sec
HTML Preparation code:
AخA
 
1
<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>
Script Preparation code:
 
var o = {
 a: {
   b: 1,
   c: 2,
   d: 3,
   j: {
     k: [1,2,3].fill('x', 2, 2000),
     l: [4,5,6].fill(0, 2, 4000)
   },
 },
 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)

  • ES6 spread

     
    const a = { ...o }

  • ES6 Object.assign

     
    const a = Object.assign({}, o)