Untitled

function fetchVideos(callback) {
  setTimeout(() => {
    const data = [
      { id: 1, title: "Топ 10 игр 2023" },
      { id: 2, title: "Лучшая битва в Warcraft3" },
      { id: 3, title: "Чем кормить кошек" },
    ];
    callback(data);
  }, 1000);
}

function fetchVideoDesc(id, callback) {
  setTimeout(() => {
    const description = {
      id: 1,
      title: "Топ 10 игр 2023",
      hashTags: ["игры", "2023"],
      authorId: 55,
    };
    callback(description);
  }, 1000);
}

function fetchAuthor(authorId, callback) {
  setTimeout(() => {
    const author = {
      id: 55,
      name: "Какие-то уроки",
      videoIds: [1, 2, 3],
      shortIds: [10, 15, 33],
    };
    callback(author);
  }, 1000);
}

function fetchAuthorShorts(author) {
  setTimeout(() => {
    console.log(author.shortIds[1]);
  });
}

function run() {
  fetchVideos((videos) => {
    fetchVideoDesc(videos[0].id, (desc) => {
      fetchAuthor(desc.authorId, (author) => {
        fetchAuthorShorts(author);
      });
    });
  });
}

run();