JS - Breakpoints var in react

Question

const getImageSize = () => {
  const windowSize = window.screen.width;

  if (windowSize < 414) return '300x500';
  if (windowSize < 768) return '414x690';
  if (windowSize < 1024) return '700x404';
  return '780x450';
};

const getFeaturedImage = () => {
  if (!featuredSto) return undefined;
  return `https://aaa.com/s3fs-public/aaa-folder/${
    featuredSto?.artwork_key
  }${getImageSize()}px.jpg`;
};