map is:exact -package:vector -package:bytestring -package:base -package:basement -package:insert-ordered-containers -package:foldl -package:base-compat -package:os-string -package:aeson -package:invertible -package:case-insensitive -package:hedgehog -package:integration -package:filepath package:charset

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