How to use the @most/scheduler.schedulerRelativeTo function in @most/scheduler

run (sink, scheduler) {
    return this.source.run(relativeSink(this.origin, sink), schedulerRelativeTo(this.origin, scheduler))
  }
}

const mapAndRun = (f: (a: A) =&gt; Stream<b>, t: Time, x: A, sink: Sink<b>, scheduler: Scheduler): Disposable =&gt;
  f(x).run(sink, schedulerRelativeTo(t, scheduler))
</b></b>

run (sink: Sink<a>, scheduler: Scheduler): Disposable {
    return this.source.run(relativeSink(this.origin, sink), schedulerRelativeTo(this.origin, scheduler))
  }
}</a>

constructor(source: Stream<a>, min: Time, max: Time, outer: SwitchSink</a><a>, sink: Sink</a><a>, scheduler: Scheduler) {
    this.min = min
    this.max = max
    this.outer = outer
    this.sink = sink
    this.disposable = source.run(this, schedulerRelativeTo(min, scheduler))
  }
</a>