Map (p.dune.1.6.3.doc.dune._stdune.Stdune.Map)

module type S = sig ... end

module Make (Key : Comparable.S) : S with type key = Key.t

val to_sexp : 
  ('a -> ('b * 'c) list) ->
  'b Sexp.Encoder.t ->
  'c Sexp.Encoder.t ->
  'a Sexp.Encoder.t