map -package:containers -package:Cabal-syntax -package:base-compat-batteries -package:imports -is:exact -package:bytestring -package:basement -is:exact -package:foldl -package:os-string -package:base-compat -package:invertible -package:psqueues -package:aeson -package:amazonka-core package:charset

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