map -package:containers -package:base-prelude -package:dlist -package:case-insensitive -package:base -package:insert-ordered-containers -package:charset -package:base-compat -package:incipit-base -package:monoidal-containers is:exact package:aeson

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