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

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Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.0.0 Safari/537.36
Chrome 118
Windows
Desktop
one year ago
Test name Executions per second
Lodash clone 1436456.2 Ops/sec
Lodash cloneDeep 235764.4 Ops/sec
Lodash merge 147443.3 Ops/sec
ES6 spread 12428702.0 Ops/sec
ES6 Object.assign 3618760.8 Ops/sec
ES6 structuredClone 198469.6 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],
     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)

  • ES6 spread

     
    const a = { ...o }

  • ES6 Object.assign

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

  • ES6 structuredClone

     
    const a = structuredClone(o)