Run details:
Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.108 Safari/537.36
Chrome 74
Windows 7
Desktop
5 years ago
Test name Executions per second
immutable with concat 3469928.2 Ops/sec
direct mutation with splice + spread 4726258.5 Ops/sec
Tests:
  • immutable with concat

  • direct mutation with splice + spread