map -package:containers -package:bytestring -package:foldl -package:incipit-base -package:basement -package:base-prelude -package:ghc -package:base-compat -package:monoidal-containers is:exact -package:insert-ordered-containers package:aeson

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