1  export default function focusNode(
 2      node: HTMLElement,
 3      focusedIndex: number | null,
 4  ) {
 5      const nodeIndex = Number(node.getAttribute('data-index'));
 6  
 7      // Handle the initial focus when applicable
 8      if (nodeIndex === focusedIndex) {
 9          node.focus();
10      }
11  
12      return {
13          update(newFocusedIndex) {
14              if (nodeIndex === newFocusedIndex) {
15                  node.focus();
16              }
17          },
18      };
19  }