map -package:containers -package:charset is:exact -package:insert-ordered-containers -package:base-compat -package:bytestring -package:base-prelude -package:basement -package:integration -package:psqueues -package:monoidal-containers package:aeson

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