Run details:
Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36
Chrome 67
Windows 8.1
Desktop
6 years ago
Test name Executions per second
immutable with concat 3686974.5 Ops/sec
direct mutation with splice + spread 2539914.5 Ops/sec
Tests:
  • immutable with concat

  • direct mutation with splice + spread