Run details:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36
Chrome 71
Linux
Desktop
5 years ago
Test name Executions per second
immutable with concat 3194729.2 Ops/sec
direct mutation with splice + spread 582295.2 Ops/sec
Tests:
  • immutable with concat

  • direct mutation with splice + spread