type TealRecord = {
  $type: "fm.teal.alpha.feed.play";
  trackName: string;
  trackMbId?: string;
  recordingMbId?: string;
  duration?: number;
  releaseName?: string;
  releaseMbId?: string;
  isrc?: string;
  originUrl?: string;
  musicServiceBaseDomain?: string;
  submissionClientAgent?: string;
  playedTime?: Date;
  artists: Artist[];
};

type Artist = {
  artistMbId?: string;
  artistName?: string;
};

export function isTealRecord(record: unknown): record is TealRecord {
  return (record as TealRecord).$type === "fm.teal.alpha.feed.play";
}