Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.97 Safari/537.36
Chrome 78
Mac OS X 10.15.1
Desktop
4 years ago
Test name Executions per second
immutable with concat 5450516.5 Ops/sec
direct mutation with splice + spread 5095423.0 Ops/sec
Tests:
  • immutable with concat

  • direct mutation with splice + spread