message: Add comment for what a mediasession is
diff: @@ -64,6 +64,8 @@ declare global {
  interface Navigator {
  userLanguage?: string;
  + // https://github.com/Microsoft/TypeScript/issues/19473
  + // https://developer.mozilla.org/en-US/docs/Web/API/MediaSession
  mediaSession: any;
  }
  