云函数的QueryDocumentSnapshot中不存在data()方法

npm install firebase@latest

const firebase = require('firebase/app');
require('firebase/firestore');

// 初始化 Firebase
const firebaseConfig = {
  // 你的 Firebase 配置
};

firebase.initializeApp(firebaseConfig);
const db = firebase.firestore();

// 查询文档
db.collection('yourCollection').get().then((querySnapshot) => {
  querySnapshot.forEach((doc) => {
    if (doc.exists()) {
      console.log(doc.id, ' => ', doc.data());
    } else {
      console.log(doc.id, ' => ', 'No such document!');
    }
  });
});

const firebase = require('firebase/app');
require('firebase/firestore');

// 初始化 Firebase
const firebaseConfig = {
  apiKey: "YOUR_API_KEY",
  authDomain: "YOUR_AUTH_DOMAIN",
  projectId: "YOUR_PROJECT_ID",
  storageBucket: "YOUR_STORAGE_BUCKET",
  messagingSenderId: "YOUR_MESSAGING_SENDER_ID",
  appId: "YOUR_APP_ID"
};

firebase.initializeApp(firebaseConfig);
const db = firebase.firestore();

exports.yourCloudFunction = functions.https.onRequest(async (req, res) => {
  try {
    const querySnapshot = await db.collection('yourCollection').get();
    querySnapshot.forEach((doc) => {
      if (doc.exists()) {
        console.log(doc.id, ' => ', doc.data());
      } else {
        console.log(doc.id, ' => ', 'No such document!');
      }
    });
    res.send('Function executed successfully');
  } catch (error) {
    console.error('Error getting documents: ', error);
    res.status(500).send('Error getting documents');
  }
});