map -package:containers -package:base -package:insert-ordered-containers -package:basement -package:foldl is:exact -package:hedgehog -package:base-compat -package:bytestring -package:base-compat-batteries -package:invertible package:aeson

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