map -package:containers -package:insert-ordered-containers -package:ghc -package:invertible -package:monoidal-containers -package:bytestring is:exact -package:os-string -package:basement -package:hedgehog -package:integration -package:foldl -package:unordered-containers -package:base-compat package:charset

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