`sig type error = Unclosed of Location.t * string * Location.t * string | Expecting of Location.t * string | Not_expecting of Location.t * string | Applicative_path of Location.t | Variable_in_scope of Location.t * string | Other of Location.t | Ill_formed_ast of Location.t * string | Invalid_package_type of Location.t * string exception Error of Syntaxerr.error exception Escape_error val report_error : Format.formatter -> Syntaxerr.error -> unit val location_of_error : Syntaxerr.error -> Location.t val ill_formed_ast : Location.t -> string -> 'a end`