module KeyValueStore:sig
..end
val store : (Core.Std.String.t, Core.Std.String.t) Core.Std.Hashtbl.t
val serve : 'a ->
Async.Std.Reader.t -> Async.Std.Writer.t -> unit Async_kernel.Deferred.t
val main : unit -> unit Async.Std.Deferred.t