map is:exact -package:lens -package:charset -package:basement -package:invertible -package:dense-linear-algebra -package:base-compat -package:incipit-base -package:bytestring -package:integration -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.