Run details:
Mozilla/5.0 (X11; Linux x86_64; rv:81.0) Gecko/20100101 Firefox/81.0
Firefox 81
Linux
Desktop
4 years ago
Test name Executions per second
Using the spread operator 6495734.5 Ops/sec
Using Object.assign 5158192.5 Ops/sec
Tests:
  • Using the spread operator

    AخA
     
    const firstObject = { sampleData: 'Hello world' }
    const finalObject = {
        ...firstObject
    };
  • Using Object.assign

     
    const firstObject = { sampleData: 'Hello world' }
    const finalObject = Object.assign({}, firstObject)