Function duration

packages/effect/src/internal/schedule.ts:669–684

(
  durationInput: Duration.DurationInput
)

/** @internal */
export const duration = (
  durationInput: Duration.DurationInput
): Schedule.Schedule<Duration.Duration> => {
  const duration = Duration.decode(durationInput)
  const durationMillis = Duration.toMillis(duration)
  return makeWithState(true as boolean, (now, _, state) =>
    core.succeed(
      state
        ? [
          false,
          duration,
          ScheduleDecision.continueWith(Interval.after(now + durationMillis))
        ] as const
        : [false, Duration.zero, ScheduleDecision.done] as const
    ))
}

/** @internal */
export const either = dual<