有没有办法在Firestore DB中存储“客户端对象”/实时监听程序？

// 存储客户端对象
const clientsCollection = db.collection('clients');
const clientObj = {
  name: 'John',
  age: 30,
  address: '123 Main St'
};

clientsCollection.add(clientObj)
  .then((docRef) => {
    console.log('Client object added with ID: ', docRef.id);
  })
  .catch((error) => {
    console.error('Error adding client object: ', error);
  });

// 实时监听程序
clientsCollection.onSnapshot((snapshot) => {
  snapshot.docChanges().forEach((change) => {
    if (change.type === 'added') {
      console.log('New client added: ', change.doc.data());
    }
    if (change.type === 'modified') {
      console.log('Client modified: ', change.doc.data());
    }
    if (change.type === 'removed') {
      console.log('Client removed: ', change.doc.data());
    }
  });
});