map -package:containers -package:Cabal-syntax -package:basement -package:foldl -package:conduit -package:monoidal-containers -package:base-compat -package:dlist -package:charset -package:os-string -package:base package:aeson is:exact

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