Module not found: Can't resolve 'firebase' in

After: npm i firebase

I'am importing firebase from firebase itself & not from a file

import firebase from 'firebase'; >in firebase.js file<

error in terminal>> ./src/firebase.js Module not found: Can't resolve 'firebase' in 'C:\Users\Home\Documents\dsn\e\Documents..........'

3 Answers

npm i firebase now installs v9 Modular SDK so you cannot used the old imports. Try refactoring your code to this:

import { initializeApp } from 'firebase/app'; const firebaseConfig = { //... }; const app = initializeApp(firebaseConfig); 

If you want to use older syntax then change your imports to compat libraries:

import firebase from "firebase/compat/app" import "firebase/compat/auth" import "firebase/compat/firestore" // other services is needed 

You can read more about it in the documentation

There should be no reason to downgrade to version 8 as version 9 provides a fully backward compatible import if you prefix the module import path with "compat".

To use:

import firebase from "firebase/compat/app"; // Other libraries might need to also be prefixed with "compat": import "firebase/compat/auth"; // Then you can then use the old interface, with version 9: if (!firebase.apps.length) { firebase.initializeApp(clientCredentials); } 

Upgrade notes:

initializeApp is moved to firebase/app package in latetst version
so import from firebase/app.