Run results for: Object.assign vs spread operator : owntest v2

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 13_5 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/83.0.4103.88 Mobile/15E148 Safari/604.1

Browser: Chrome Mobile iOS 83

Operating system: iOS 13.5

Device Platform: Mobile

Date tested: 3 years ago

Test name	Executions per second
Object.assign	2025832.0 Ops/sec
spread operator	702936.3 Ops/sec
lodash clonedeep	307804.8 Ops/sec

HTML Preparation code:

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

Tests:

Object.assign
const messageInternal = { a: 1 , b: 2 }; const message = { id: 1111, name: 'SOME', isActive: 1, country: 'USA', createdAt: '2013-09-26T16:35:41.047Z', updatedAt: '2013-09-26T16:35:41.057Z', createdBy: '', updatedBy: '', things: [ 34, 86 ], internal: messageInternal }; var other = Object.assign({ a: 2 }, message);
spread operator
const messageInternal = { a: 1 , b: 2 }; const message = { id: 1111, name: 'SOME', isActive: 1, country: 'USA', createdAt: '2013-09-26T16:35:41.047Z', updatedAt: '2013-09-26T16:35:41.057Z', createdBy: '', updatedBy: '', things: [ 34, 86 ], internal: messageInternal }; var other = { a: 2, ...message };
lodash clonedeep
const messageInternal = { a: 1 , b: 2 }; const message = { id: 1111, name: 'SOME', isActive: 1, country: 'USA', createdAt: '2013-09-26T16:35:41.047Z', updatedAt: '2013-09-26T16:35:41.057Z', createdBy: '', updatedBy: '', things: [ 34, 86 ], internal: messageInternal }; var other = _.cloneDeep(message);

Run results for: Object.assign vs spread operator : owntest v2

Object.assign

spread operator

lodash clonedeep