Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_6) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/14.1.2 Safari/605.1.15
Safari 14
Mac OS X 10.15.6
Desktop
3 years ago
Test name Executions per second
Using the spread operator 6154663.0 Ops/sec
Using Object.assign 3607687.2 Ops/sec
Manually copying properties 94581544.0 Ops/sec
Create new object while copying 95490832.0 Ops/sec
Create new object from scratch 326091616.0 Ops/sec
JSON 621177.2 Ops/sec
Tests:
  • Using the spread operator

  • Using Object.assign

  • Manually copying properties

  • Create new object while copying

  • Create new object from scratch

  • JSON