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

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