koel/resources/assets/js/stubs/song.js

import album from './album'
import artist from './artist'

export default {
  album,
  artist,
  id: null,
  album_id: 0,
  title: '',
  length: 0,
  fmtLength: '00:00',
  lyrics: '',
  liked: false,
  playCount: 0,
  playbackState: 'stopped'
}