How to use the standardized-audio-context.DelayNode function in standardized-audio-context

constructor(
    context: AudioContext,
    model: string,
    protected defaults: ChorusSettings
  ) {
    super(context, model);
    this.eqNode = new StandardTone(context);
    this.lfo = new LFO(context);
    this.delayNode = new DelayNode(context);
    this.feedbackNode = new GainNode(context);
    this.levelNode = new GainNode(context);

    this.processor = [...this.eqNode.nodes, this.delayNode, this.levelNode];

    connectNodes(this.processor);

    // Feedback loop.
    this.delayNode.connect(this.feedbackNode);
    this.feedbackNode.connect(this.delayNode);

    // LFO setup.
    this.lfo.connect(this.delayNode.delayTime);
    this.applyDefaults();
  }

constructor(
    context: AudioContext,
    model: string,
    buffer$: Observable,
    convolverMakeUp: number,
    protected defaults: ReverbSettings
  ) {
    super(context, model);

    this.splitter = new ChannelSplitterNode(context);
    this.timeNode = new DelayNode(context);
    this.toneNode = new StandardTone(context);
    this.convolver = new ConvolverNode(context);
    this.wet = new GainNode(context);
    this.dry = new GainNode(context);
    this.merger = new ChannelMergerNode(context);
    this.makeUpGain = new GainNode(context);

    this.processor = [
      this.splitter,
      this.timeNode,
      ...this.toneNode.nodes,
      this.convolver,
      this.wet,
      this.merger,
      this.makeUpGain
    ];