Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36
Chrome 67
Mac OS X 10.13.5
Desktop
6 years ago
Test name Executions per second
Using the spread operator 966535.1 Ops/sec
Using Object.assign 944145.6 Ops/sec
Manually copying properties 335457600.0 Ops/sec
Create new object while copying 792047552.0 Ops/sec
Create new object from scratch 790772864.0 Ops/sec
Tests:
  • Using the spread operator

  • Using Object.assign

  • Manually copying properties

  • Create new object while copying

  • Create new object from scratch