map -package:containers is:exact -package:bytestring -package:base-compat-batteries -package:foldl -package:basement -package:monoidal-containers -package:base -package:hedgehog -package:case-insensitive package:aeson

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