How to use the gl-react.Visitor function in gl-react

constructor() {
    super();
    const visitor = new Visitor();
    visitor.onSurfaceDrawError = (error: Error) => {
      this.setState({ error });
      return true;
    };
    visitor.onSurfaceDrawEnd = () => this.setState({ error: null });
    this.state = { error: null, visitor };
  }

constructor() {
    super();
    const visitor = new Visitor();
    visitor.onSurfaceDrawError = (error: Error) => {
      this.setState({ error });
      return true;
    };
    visitor.onSurfaceDrawEnd = () => this.setState({ error: null });
    this.state = { error: null, visitor };
  };

constructor() {
    super();
    const visitor = new Visitor();
    visitor.onSurfaceDrawError = (error: Error) => {
      this.setState({ error });
      return true;
    };
    visitor.onSurfaceDrawEnd = () => this.setState({ error: null });
    this.state = { error: null, visitor };
  }