Get Youtube Video Thumbnail JS/TS Script

getYoutubeThumbnail.ts

// Based on info from here https://stackoverflow.com/questions/2068344/how-do-i-get-a-youtube-video-thumbnail-from-the-youtube-api

const formatsToTry = ["maxresdefault", "hqdefault", "0", "default"];

const getYTThumbnail = async (video_id: string) => {
  const baseURL = `https://img.youtube.com/vi/${video_id}/`;

  for (let index = 0; index < formatsToTry.length; index++) {
    const endText = formatsToTry[index];

    const fullURL = baseURL + `${endText}.jpg`;

    const resp = await fetch(fullURL, {
      method: "HEAD",
    });

    if (resp.ok) {
      return fullURL;
    }
  }

  return null;
};