map -package:containers -package:charset -package:invertible -package:case-insensitive is:exact -package:basement -package:blaze-html -package:os-string -package:bytestring -package:imports -package:base-compat package:aeson

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