Run details:
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:61.0) Gecko/20100101 Firefox/61.0
Firefox 61
Ubuntu
Desktop
6 years ago
Test name Executions per second
immutable with concat 921425.7 Ops/sec
direct mutation with splice + spread 329680.0 Ops/sec
Tests:
  • immutable with concat

  • direct mutation with splice + spread