Ch13: thingDownFlipAndReverse

[antonklimov]

// thingDownFlipAndReverse :: Endo [String] -> [String]
const thingDownFlipAndReverse = fold(Endo(() => []), [Endo(reverse), Endo(sort), Endo(append('thing down')])

1. it's missing a right bracket.
2. since fold is a reduce, one would expect the first parameter to be Endo.empty() which is Endo(identity) and not Endo with a function returning an empty array.

[marko911]

+1 here. Replace Endo(()=>[]) with Endo.empty()