map -package:containers -package:case-insensitive -package:base-compat -package:charset -package:conduit -package:invertible -package:insert-ordered-containers -package:dense-linear-algebra -package:hedgehog -package:base package:aeson is:exact

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