var channelVids = require('yt-channel-videos')('YOUTUBE-API-KEY-HERE');
 
channelVids.allUploads('YOUTUBE-CHANNEL-NAME-HERE')
.then(function(videos) {
  console.log(videos); // { videoCount: X, pageCount: Y, items: [...] }
});
 
channelVids.uploadsAfterDate('CHANNEL-NAME', new Date(2015, 0, 1))
.then(function(newVideos) {
  // use new videos
});