Message from JavaScript discussions

October 2018

— Https://stackoverflow.com/questions/44030645/are-arrow-functions-faster-more-performant-lighter-than-ordinary-standalone-f

Message permanent page

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Since it also makes it run faster as a side effect. so who knows why they are popular🤤 i do accept that some base type functions will run faster in future, but not the syntax constructs.

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R.complement(
  R.compose(
    R.contains(
      callbackQuery.data),
    R.map(R.prop('name'))));

— Babel makes it run faster? Uhhhh

— So no performance difference

— Read first comment

— Yes

— The engine has to make one more transition, that's the cost

— Which means arrow functions are inherently cheaper

— No

— You are like a sect member

— Normal functions = have prototype, can be bound
Arrow functions = no prototype, no binding possible