Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.149 Safari/537.36
Chrome 80
Mac OS X 10.14.0
Desktop
4 years ago
Test name Executions per second
immutable with concat 4472251.5 Ops/sec
direct mutation with splice + spread 4471832.0 Ops/sec
Tests:
  • immutable with concat

  • direct mutation with splice + spread