Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.81 Safari/537.36
Chrome 69
Mac OS X 10.13.6
Desktop
6 years ago
Test name Executions per second
immutable with concat 3185070.0 Ops/sec
direct mutation with splice + spread 2914969.2 Ops/sec
Tests:
  • immutable with concat

  • direct mutation with splice + spread