Method constructor

packages/markmap-cli/src/util/dev-server.ts:155–164

(
    public options: IDevelopOptions,
    transformer?: Transformer,
  )

  } | null = null;

  constructor(
    public options: IDevelopOptions,
    transformer?: Transformer,
  ) {
    this.transformer = transformer || new Transformer();
    this.html = this._buildHtml();
    this.disposeList.push(() => {
      this.watcher?.close();
    });
  }

  private _buildHtml() {
    const otherAssets = mergeAssets(