map -package:containers is:exact -package:base -package:ghc -package:invertible -package:charset -package:basement -package:hedgehog -package:pipes -package:Cabal-syntax -package:filepath -package:case-insensitive package:aeson

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