map -package:vector -package:basement -package:conduit -package:imports -is:exact -package:filepath -package:aeson -is:exact -package:foldl -package:charset 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.