open Import type t = Astlib.Location.Error.t val of_exn : exn -> t option val register_error_of_exn : (exn -> t option) -> unit val message : t -> string val set_message : t -> string -> t val make : loc:Location.t -> string -> sub:(Location.t * string) list -> t val to_extension : t -> Import.Parsetree.extension val raise : t -> 'a val update_loc : t -> Location.t -> t val get_location : t -> Location.t val of_extension : Import.Parsetree.extension -> t option