Benchmark: Object cloning with Lodash clone vs cloneDeep vs merge vs assign vs ES6 object spread vs ES6 Object.assign

HTML Preparation code:

<script src='https://cdn.jsdelivr.net/npm/lodash@3.10.1/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)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Lodash clone
Lodash cloneDeep
Lodash merge
Lodash assign
ES6 spread
ES6 Object assign

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 3 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.90 Safari/537.36

Browser/OS: Chrome 89 on Windows

View result in a separate tab

Test name	Executions per second
Lodash clone	2253558.0 Ops/sec
Lodash cloneDeep	555951.3 Ops/sec
Lodash merge	271382.2 Ops/sec
Lodash assign	2255432.0 Ops/sec
ES6 spread	10530280.0 Ops/sec
ES6 Object assign	3017452.0 Ops/sec

Object cloning with Lodash clone vs cloneDeep vs merge vs assign vs ES6 object spread vs ES6 Object.assign (version: 0)

Comparing performance of: Lodash clone vs Lodash cloneDeep vs Lodash merge vs Lodash assign vs ES6 spread vs ES6 Object assign

Created: 3 years ago by: Guest

Jump to the latest result

Lodash clone

Lodash cloneDeep

Lodash merge

Lodash assign

ES6 spread

ES6 Object assign

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A