Run results for: Lodash cloneDeep vs JSON.parse(JSON.stringify(obj))

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.110 Safari/537.36

Browser: Chrome 96

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
Lodash cloneDeep	1997.3 Ops/sec
Deep clone with JSON.parse(JSON.stringify(obj))	1768.3 Ops/sec

HTML Preparation code:


<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>
<script src='https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.22.0/moment.min.js'></script>

Script Preparation code:

arr = [];
for (let i = 0; i < 200; i += 1) {
    arr.push({
      name: `Person${i}`,
      birthday: moment().add(i, 'days').toDate(),
    });
  }

Tests:

Lodash cloneDeep
const cloneArr = _.cloneDeep(arr);
Deep clone with JSON.parse(JSON.stringify(obj))
const cloneArr = JSON.parse(JSON.stringify(arr));

Run results for: Lodash cloneDeep vs JSON.parse(JSON.stringify(obj))

Lodash cloneDeep

Deep clone with JSON.parse(JSON.stringify(obj))