code: function SpotifyError (err) {
    this.domain = err[0] || 0;
    this.code = err[1] || 0;
    this.description = err[2] || '';
    this.data = err[3] || null;
  
    // Error impl
    this.name = domains[this.domain];
    var msg = codes[this.code];
    if (this.description) msg += ' (' + this.description + ')';
    this.message = msg;
    Error.captureStackTrace(this, SpotifyError);
  }
docs: Spotify error class.
  
  Sample `err` objects:
  
  [ 11, 1, 'Invalid user' ]
  [ 12, 8, '' ]
  [ 14, 408, '' ]
  [ 14, 429, '' ]