map is:exact -package:conduit -package:containers -package:aeson -package:base -package:invertible -package:dense-linear-algebra -package:monoidal-containers -package:hedgehog -package:case-insensitive -package:base-compat -package:pipes -package:psqueues -package:amazonka-core package:charset

map :: (Char -> Char) -> CharSet -> CharSet
charset Data.CharSet