Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.61 Safari/537.36
Chrome 83
Mac OS X 10.15.4
Desktop
4 years ago
Test name Executions per second
Reduce and Spread 28131.5 Ops/sec
ForEach and Mutate (for .. in loop) 99806.5 Ops/sec
Mutate with Object.assign 75575.6 Ops/sec
Foreach and Mutate (Object.assign) 5077.2 Ops/sec
Script Preparation code:
Tests:
  • Reduce and Spread

  • ForEach and Mutate (for .. in loop)

  • Mutate with Object.assign

  • Foreach and Mutate (Object.assign)