Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.82 Safari/537.36
Chrome 93
Windows
Desktop
3 years ago
Test name Executions per second
Using the spread operator 26993644.0 Ops/sec
Using Object.assign 2507569.0 Ops/sec
Manually copying properties 676149632.0 Ops/sec
Create new object while copying 710995840.0 Ops/sec
Create new object from scratch 742106304.0 Ops/sec
JSON 416964.2 Ops/sec
Tests:
  • Using the spread operator

  • Using Object.assign

  • Manually copying properties

  • Create new object while copying

  • Create new object from scratch

  • JSON