map -package:containers is:exact -package:charset -package:imports -package:foldl -package:base-prelude -package:basement -package:os-string -package:invertible -package:insert-ordered-containers -package:psqueues package:aeson

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