(* Operations on module types *)

open Typedtree

val scrape: Env.t -> module_type -> module_type
        (* Expand toplevel module type abbreviations
           till hitting a "hard" module type (signature, functor,
           or abstract module type ident. *)
val strengthen: Env.t -> module_type -> Path.t -> module_type
        (* Strengthen abstract type components relative to the
           given path. *)
val nondep_supertype: Env.t -> Ident.t -> module_type -> module_type
        (* Return the smallest supertype of the given type
           in which the given ident does not appear.
           Raise [Not_found] if no such type List.exists. *)