Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.129 Safari/537.36
Chrome 81
Windows
Desktop
4 years ago
Test name Executions per second
immutable with concat 1799666.0 Ops/sec
direct mutation with splice + spread 2220441.8 Ops/sec
Tests:
  • immutable with concat

  • direct mutation with splice + spread