map -package:containers -package:charset -package:invertible -is:exact -package:monoidal-containers -package:base is:exact -package:base-compat -package:base-prelude -package:basement -package:incipit-base package:aeson

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