I can't figure out what is the error here. I made the tutorial Firebase/website and did the same things in my project. I am trying to print out the collection I created on Firebase in my React website but got the error at the line db.collection : Uncaught (in promise) TypeError: ae.collection is not a function
component.js :
// React
import { useState, useEffect } from "react";
import { db, collection, getDocs } from '../../../firebase.js';
const [holder, setHolder] = useState([]); // update
db.collection("holder").onSnapshot((snapshot) => {
setHolder(
snapshot.docs.map((doc) => ({
id: doc.id,
data: doc.data(),
}))
);
});
console.log({ holder });
update : firebase.js below
// Import the functions you need from the SDKs you need
import { initializeApp } from "firebase/app";
import { getAnalytics } from "firebase/analytics";
import { getFirestore, collection, getDocs } from 'firebase/firestore/lite';
// TODO: Add SDKs for Firebase products that you want to use
// https://firebase.google.com/docs/web/setup#available-libraries
// Your web app's Firebase configuration
// For Firebase JS SDK v7.20.0 and later, measurementId is optional
const firebaseConfig = {
...
};
// Initialize Firebase
const app = initializeApp(firebaseConfig);
const analytics = getAnalytics(app);
export const db = getFirestore(app);
Thank you !
You are using Firebase Modular SDK which has a completely new syntax and you must use the same in your code. Try refactoring the code to this:
// React
import { useState, useEffect } from "react";
import { db } from '../../../firebase.js';
import { onSnapshot, collection } from 'firebase/firestore'
const [holder, setHolder] = useState([]); // update
onSnapshot(collection(db, 'holder'), (snapshot) => {
setHolder(
snapshot.docs.map((doc) => ({
id: doc.id,
data: doc.data(),
}))
);
})
Also make sure your getFirestore import is from firebase/firestore and not from lite in firebase.js or you'll run into this issue:
import { getFirestore } from 'firebase/firestore';