Frontend developers are recruited from the same cohort as other developers nowadays, so they've been exposed to functional programming(and Haskell if they went

Frontend developers are recruited from the same cohort as other developers nowadays, so they've been exposed to functional programming(and Haskell if they went to college) to the same degree as the rest. Hell, considering that JavaScript has some of it sprinkled on top I would say that on average they had more exposure to some of its concepts than people who never touched frontend.