Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36
Chrome 67
Windows
Desktop
6 years ago
Test name Executions per second
Using the spread operator 782026.5 Ops/sec
Using Object.assign 691740.7 Ops/sec
Manually copying properties 124061840.0 Ops/sec
Create new object while copying 823868096.0 Ops/sec
Create new object from scratch 814492288.0 Ops/sec
Tests:
  • Using the spread operator

  • Using Object.assign

  • Manually copying properties

  • Create new object while copying

  • Create new object from scratch