google apps script to update all youtube video descriptions

Code.gs

function main() {
  var videos = YouTube.Search.list('snippet', {
    type: 'video',
    maxResults: 50,
    forMine: true
  });
  
  var allVideos = videos.items;
  
  while(videos.nextPageToken) {
    var videos = YouTube.Search.list('snippet', {
      type: 'video',
      maxResults: 50,
      forMine: true,
      pageToken: videos.nextPageToken
    });  
    
    allVideos = allVideos.concat(videos.items);
  }
  
  for(var i = 0; i < allVideos.length; i++) {
    var video = getVideo(allVideos[i].id.videoId);
    
    updateDescription(video);
  }
  
}

function getVideo(id) {
  return YouTube.Videos.list('snippet', {id: id}).items[0];
}

function updateDescription(video) {
  video.snippet.description = 'SUPPORT ME ON PATREON: https://patreon.com/jordanrhea \n\n' + video.snippet.description;
  
  YouTube.Videos.update(video, 'snippet');
}