Module dependencies.
module StringSet : Stdlib.Set.S with type elt = string
module StringMap : Stdlib.Map.S with type key = string
val make_leaf : string -> map_tree
val weaken_map : StringSet.t -> map_tree -> map_tree
val free_structure_names : StringSet.t Stdlib.ref
val open_module : bound_map -> Longident.t -> bound_map
val add_use_file : bound_map -> Parsetree.toplevel_phrase list -> unit
val add_signature : bound_map -> Parsetree.signature -> unit
val add_implementation : bound_map -> Parsetree.structure -> unit
val add_implementation_binding : bound_map -> Parsetree.structure -> bound_map
val add_signature_binding : bound_map -> Parsetree.signature -> bound_map