map -package:containers -package:imports -package:foldl is:exact -package:charset -package:bytestring -package:basement -package:hedgehog -package:psqueues -package:integration -package:pipes -package:conduit package:aeson

map :: (a -> b) -> KeyMap a -> KeyMap b
aeson Data.Aeson.KeyMap
Map a function over all values in the map.