Javascript 在JS中关联类型化实体

下面是JS的typeorm示例

制作了下面的消息表中的roomID [MySQL中的表关系图][1] ，但需要在文件室表中包含messages[]列。怎么做

const MessageEntity = new EntitySchema({
    name: "Message",
    target: Message,
    columns: {
        id: {primary: true, type: "int", generated: true},
        text: {type: "varchar"},
        file: {type: "binary", nullable: true},
        date: {type: "datetime", nullable: true},
    },
    relations: {
        room: {
            target: "Room",
            type: "many-to-one",
            inverseSide: "Room",
            joinTable: true,
            cascade: true
        }
    }
})

    export {MessageEntity}

const RoomEntity = new EntitySchema({
    name: "Room",
    target: Room,
    columns: {
        id: {primary: true, type: "int", generated: true},
        name: {type: "varchar"},
        link: {type: "varchar"},
    },
    relations: {
        message: {
            target: "Message",
            type: "one-to-many",
            joinTable: true,
            cascade: true
        }
    }
    })

    export {RoomEntity}
    ```


  [1]: https://i.stack.imgur.com/zooM8.png