map -package:containers -package:insert-ordered-containers -package:conduit is:exact -package:incipit-base -package:invertible -package:hedgehog -package:base-compat-batteries -package:monoidal-containers package:aeson

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