Function createTallElement

packages/common/test/viewport_scroller_spec.ts:155–169

()

    });

    function createTallElement() {
      const tallItem = document.createElement('div');
      tallItem.style.height = '3000px';
      document.body.appendChild(tallItem);
      const anchorNode = createAnchorNode();
      document.body.appendChild(anchorNode);

      return {
        anchorNode,
        cleanup: () => {
          tallItem.remove();
          anchorNode.remove();
        },
      };
    }

    function createTallElementWithShadowRoot() {
      const tallItem = document.createElement('div');