map -package:containers -package:bytestring -package:base-compat-batteries -package:Cabal-syntax -is:exact -package:case-insensitive -package:monoidal-containers -package:base-compat is:exact -package:invertible package:aeson

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