map -package:containers -package:case-insensitive -is:exact -package:ghc -package:basement -package:psqueues -package:invertible -package:insert-ordered-containers -package:dense-linear-algebra -package:base-compat package:aeson is:exact

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