firebase_firestore_quickstart_add_and_retrieve_documents.ts

1import { initializeApp } from "firebase/app";
2import { getFirestore, collection, addDoc, getDocs } from "firebase/firestore";
3
4// TODO: Replace the following with your app's Firebase project configuration
5// See: https://support.google.com/firebase/answer/7015592
6const firebaseConfig = {
7    apiKey: "YOUR_API_KEY",
8    authDomain: "YOUR_AUTH_DOMAIN",
9    projectId: "YOUR_PROJECT_ID",
10    storageBucket: "YOUR_STORAGE_BUCKET",
11    messagingSenderId: "YOUR_MESSAGING_SENDER_ID",
12    appId: "YOUR_APP_ID"
13};
14
15// Initialize Firebase
16const app = initializeApp(firebaseConfig);
17
18// Initialize Cloud Firestore and get a reference to the service
19const db = getFirestore(app);
20
21async function runQuickstart() {
22  try {
23    // Add a new document with a generated ID
24    const docRef = await addDoc(collection(db, "users"), {
25      first: "Ada",
26      last: "Lovelace",
27      born: 1815
28    });
29    console.log("Document written with ID: ", docRef.id);
30
31    // Read data from the collection
32    const querySnapshot = await getDocs(collection(db, "users"));
33    querySnapshot.forEach((doc) => {
34      console.log(`${doc.id} => ${JSON.stringify(doc.data())}`);
35    });
36  } catch (e) {
37    console.error("Error adding/retrieving document: ", e);
38  }
39}
40
41runQuickstart();