Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.90 Safari/537.36
Chrome 77
Windows
Desktop
5 years ago
Test name Executions per second
immutable with concat 3892614.2 Ops/sec
direct mutation with splice + spread 4161552.5 Ops/sec
Tests:
  • immutable with concat

  • direct mutation with splice + spread