map -is:exact -package:bytestring -package:ghc -package:charset -package:basement -package:imports -package:base-prelude -package:filepath -package:base package:case-insensitive is:exact

map :: FoldCase s2 => (s1 -> s2) -> CI s1 -> CI s2
case-insensitive Data.CaseInsensitive
Transform the original string-like value but keep it case insensitive.