Run details:
Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0
Firefox 78
Linux
Desktop
3 years ago
Test name Executions per second
immutable with concat 888195.2 Ops/sec
direct mutation with splice + spread 250785.4 Ops/sec
Tests:
  • immutable with concat

  • direct mutation with splice + spread