map -package:containers -package:charset -package:invertible -is:exact -package:base-compat -package:dlist -package:filepath -package:Cabal-syntax -package:foldl -package:hedgehog -package:bytestring package:aeson is:exact

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