Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.131 Safari/537.36
Chrome 74
Mac OS X 10.14.4
Desktop
5 years ago
Test name Executions per second
immutable with concat 3801085.8 Ops/sec
direct mutation with splice + spread 5404466.0 Ops/sec
Tests:
  • immutable with concat

  • direct mutation with splice + spread