map -package:containers -is:exact -package:foldl -package:basement -package:invertible -package:charset -package:bytestring -package:psqueues -package:conduit -package:filepath -package:hedgehog package:aeson is:exact

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