Type_abstract.Make2
module X : Named_intf.S2
val typerep_of_t : 'a Std_internal.Typerep.t -> 'b Std_internal.Typerep.t -> ('a, 'b) X.t Std_internal.Typerep.t
val typename_of_t : 'a Typename.t -> 'b Typename.t -> ('a, 'b) X.t Typename.t