Run details:
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:68.0) Gecko/20100101 Firefox/68.0
Firefox 68
Ubuntu
Desktop
5 years ago
Test name Executions per second
immutable with concat 1379282.8 Ops/sec
direct mutation with splice + spread 505334.7 Ops/sec
Tests:
  • immutable with concat

  • direct mutation with splice + spread