Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:66.0) Gecko/20100101 Firefox/66.0
Firefox 66
Windows
Desktop
5 years ago
Test name Executions per second
immutable with concat 1950035.1 Ops/sec
direct mutation with splice + spread 595809.9 Ops/sec
Tests:
  • immutable with concat

  • direct mutation with splice + spread