Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.88 Safari/537.36
Chrome 87
Mac OS X 10.15.3
Desktop
3 years ago
Test name Executions per second
immutable with concat 4570469.5 Ops/sec
direct mutation with splice + spread 4359029.5 Ops/sec
Tests:
  • immutable with concat

  • direct mutation with splice + spread