botframework-webchat-component/src/providers/RovingTabIndex/useItemRef.ts

React component of botframework-webchat

import { useEffect, useRef } from 'react';
import useContext from './private/useContext';

import type { MutableRefObject } from 'react';

export default function useItemRef<T extends HTMLElement>(itemIndex: number): MutableRefObject<T | undefined> {
  const ref = useRef<T>();

  const { itemEffector } = useContext();

  useEffect(() => itemEffector(ref, itemIndex));

  return ref;
}