Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.164 Safari/537.36
Chrome 91
Mac OS X 10.15.6
Desktop
3 years ago
Test name Executions per second
Reduce and Spread 38398.3 Ops/sec
ForEach and Mutate (for .. in loop) 137391.7 Ops/sec
Mutate with Object.assign 93489.4 Ops/sec
Foreach and Mutate (Object.assign) 7274.3 Ops/sec
Script Preparation code:
Tests:
  • Reduce and Spread

  • ForEach and Mutate (for .. in loop)

  • Mutate with Object.assign

  • Foreach and Mutate (Object.assign)