Method constructor

tests/issues/GH4759.test.ts:68–72

(releaseDate: Date = new Date(), name: string, author: Author)

  author!: Ref<Author>;

  constructor(releaseDate: Date = new Date(), name: string, author: Author) {
    this.releaseDate = releaseDate;
    this.name = name;
    this.author = ref(author);
  }
}

let orm: MikroORM;