Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:79.0) Gecko/20100101 Firefox/79.0
Firefox 79
Mac OS X 10.15
Desktop
4 years ago
Test name Executions per second
immutable with concat 2568054.2 Ops/sec
direct mutation with splice + spread 1080871.0 Ops/sec
Tests:
  • immutable with concat

  • direct mutation with splice + spread