Javascript 可以规范化字符串吗？

我正在使用。我试图规范化字符串，但我没有弄明白

const mails = [
  {
    "id": "mailId1",
    "conversationId": "conversationId1",
    "content": "Hi",
    "sender": {
      "emailAddress": { name: 'Jack', address: 'jack@example.com' }
    }
  },
  {
    "id": "mailId2",
    "conversationId": "conversationId1",
    "content": "Hello",
    "sender": {
      "emailAddress": { name: 'Rose', address: 'rose@example.com' }
    }
  }
]

const userSchema = new schema.Entity('users', {}, {
  idAttribute: value => value.emailAddress.address
});
const conversationIdSchema = new schema.Entity('conversationIds', {}, {
  idAttribute: value => value
});
const mailSchema = new schema.Entity('mails', {
  conversationId: conversationIdSchema,
  sender: userSchema
});

const normalizedData = normalize(mails, [mailSchema]);

现在，上面的代码将给出以下结果：

（注意

conversationIdSchema

不工作，因为它是错误的）

我希望有这样的对话ID：

{
  result: { mails: ['mailId1', 'mailId2'] },
  entities: {
    users: {
      'jack@example.com': { name: 'Jack', address: 'jack@example.com' }
      'rose@example.com': { name: 'Rose', address: 'rose@example.com' }
    },
    mails: {
      // ...
    },
    conversationIds: ['conversationId1']
  }
}

---

不，这是不可能的。normalizer处理对象，而不是字符串

{
  result: { mails: ['mailId1', 'mailId2'] },
  entities: {
    users: {
      'jack@example.com': { name: 'Jack', address: 'jack@example.com' }
      'rose@example.com': { name: 'Rose', address: 'rose@example.com' }
    },
    mails: {
      // ...
    },
    conversationIds: ['conversationId1']
  }
}