map -package:containers -package:basement -package:conduit -is:exact -package:ghc -package:bytestring -package:integration -package:charset -package:hedgehog -package:foldl -package:invertible package:aeson is:exact

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