Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:84.0) Gecko/20100101 Firefox/84.0
Firefox 84
Mac OS X 10.15
Desktop
3 years ago
Test name Executions per second
immutable with concat 1021490.7 Ops/sec
direct mutation with splice + spread 507333.7 Ops/sec
Tests:
  • immutable with concat

  • direct mutation with splice + spread