map -package:containers -is:exact -package:charset -package:bytestring -is:exact -package:incipit-base -package:basement -package:insert-ordered-containers -package:Cabal-syntax -package:base -package:filepath package:aeson is:exact

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