Function isExtendedQuestion

src/components/posts/PostCard.tsx:40–44

(
  post: ExtendedQuestion | Answer,
)

  parentAuthorName?: string | null;
}
const isExtendedQuestion = (
  post: ExtendedQuestion | Answer,
): post is ExtendedQuestion => {
  return (post as ExtendedQuestion).slug !== undefined;
};
const PostCard: React.FC<IProps> = ({
  post,
  sessionUser,