Re:Elegant Error Handling with the JavaScript “Either” Monad
by jayshua on Wednesday June 19, 2019 @03:27PM
(#20226515)
Left only shortcuts because of the implementation of the map function. There could just as easily be mapLeft and mapRight functions instead, allowing you to choose the shortcut behaviour.
It would be bad to name it after error handling, but the entirely meaningless names aren't great either.