youtube_playlist-8.x-1.x-dev/youtube_playlist.libraries.yml

youtube_playlist:
  version: 1.x
  js:
    https://www.youtube.com/iframe_api: {}
    js/utils.js: {}
    js/youtube_playlist.js: {}
  dependencies:
    - core/jquery
  css:
    theme:
      css/youtube_playlist.css: {}