module Clock_ns : sig ... end
module Time_ns : sig ... end
module Time : sig ... end
module Async_kernel_scheduler : sig ... end
module Date : sig ... end
val at : Time_ns.t -> unit Deferred.t
val after : Time_ns.Span.t -> unit Deferred.t
val every : ?start:unit Deferred.t -> ?stop:unit Deferred.t -> ?continue_on_error:bool -> Time_ns.Span.t -> (unit -> unit) -> unit
val with_timeout : Time_ns.Span.t -> 'a Deferred.t -> [ `Timeout | `Result of 'a ] Deferred.t