map -package:containers -package:base -is:exact -package:basement -package:bytestring -package:integration -package:filepath -package:invertible -package:foldl -package:hedgehog -package:psqueues package:aeson is:exact

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