map -package:containers -package:charset -package:dense-linear-algebra -package:monoidal-containers -package:base -is:exact -package:filepath -is:exact -package:incipit-base -package:base-compat-batteries package:aeson is:exact

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