Import Firebase User in Typescript v8 definition

Question

Import Firebase User in Typescript v8 definition

In the previous versions of Firebase, I used to import the Typescript definition of the User like this:

import {User} from 'firebase';

However, with the introduction of v8, this import no longer works and gives the following error message:

Module '"../../../../node_modules/firebase"' has no exported member 'User'. Did you mean to use 'import User from "../../../../node_modules/firebase"' instead?

The release notes mention that CJS bundles have been dropped, but do not provide information on how to resolve this import issue.

I would appreciate any help or guidance on this matter. Thank you in advance.

typescript firebase

Answer 1

Answer №1

To achieve this in version 9.0.0 (Web version 9 modular), you can follow these steps:

// Create an alias for better readability
import { User as FirebaseUser } from "firebase/auth";

After that, you can use it like this:

// Directly use the type inside a hook 
const [user, setUser] = useState<FirebaseUser | null>(null)

Answer 2

To achieve this in version 9.0.0 (Web version 9 modular), you can follow these steps:

// Create an alias for better readability
import { User as FirebaseUser } from "firebase/auth";

After that, you can use it like this:

// Directly use the type inside a hook 
const [user, setUser] = useState<FirebaseUser | null>(null)

Answer 3

Answer №2

Here's an alternative way to phrase it:

Use the following code snippet instead:
import firebase from "firebase/app"
const user: firebase.User = ...

If you prefer a more concise version, you can use:

Try this shortened version:
import firebase from "firebase/app"
type User = firebase.User
const user: User = ...

Answer 4

Here's an alternative way to phrase it:

Use the following code snippet instead:
import firebase from "firebase/app"
const user: firebase.User = ...

If you prefer a more concise version, you can use:

Try this shortened version:
import firebase from "firebase/app"
type User = firebase.User
const user: User = ...

Answer 5

Answer №3

Successfully resolved my problem when importing the User using the Firebase JS SDK version 8.0.0 with this code:

import {User} from '@firebase/auth-types';

Answer 6

Successfully resolved my problem when importing the User using the Firebase JS SDK version 8.0.0 with this code:

import {User} from '@firebase/auth-types';

Answer 7

Answer №4

Did you attempt to import firebase and then access the User with firebase.User? Although it may seem more cumbersome, this method worked for me.

Additionally, I encountered issues with conflicting imports in the past - specifically with a file named firebase.ts that caused issues with my app. Just a heads up in case you happen to have something similar.

Answer 8

Did you attempt to import firebase and then access the User with firebase.User? Although it may seem more cumbersome, this method worked for me.

Additionally, I encountered issues with conflicting imports in the past - specifically with a file named firebase.ts that caused issues with my app. Just a heads up in case you happen to have something similar.

Answer 9

Answer №5

If you are working with Angular, make sure to import AngularFire:

import { User } from '@angular/fire/auth';

export class HomeToolbarService {
  user: User;
}

In order to achieve this, I had to edit the tsconfig.json file and include the following:

"compilerOptions": {
  "strictPropertyInitialization": false,
}

Answer 10

If you are working with Angular, make sure to import AngularFire:

import { User } from '@angular/fire/auth';

export class HomeToolbarService {
  user: User;
}

In order to achieve this, I had to edit the tsconfig.json file and include the following:

"compilerOptions": {
  "strictPropertyInitialization": false,
}

Answer 11

Answer №6

If you prefer not to use the traditional import method for adding firebase, there is another option: create an index.d.ts file and add the firebase types manually:

/// <reference types="firebase" />

type Firebase = typeof firebase.default

type FirebaseApp = firebase.default.app.App

type FirebaseUser = firebase.default.User

Keep in mind that I had to specify firebase.default instead of just firebase due to using triple slash directives

/// <reference types="..." />

To simplify things, you can import firebase directly in the index.d.ts file without needing to use .default:

import firebase from "firebase/app"

type Firebase = typeof firebase

type FirebaseApp = firebase.app.App

type FirebaseUser = firebase.User

Answer 12

If you prefer not to use the traditional import method for adding firebase, there is another option: create an index.d.ts file and add the firebase types manually:

/// <reference types="firebase" />

type Firebase = typeof firebase.default

type FirebaseApp = firebase.default.app.App

type FirebaseUser = firebase.default.User

Keep in mind that I had to specify firebase.default instead of just firebase due to using triple slash directives

/// <reference types="..." />

To simplify things, you can import firebase directly in the index.d.ts file without needing to use .default:

import firebase from "firebase/app"

type Firebase = typeof firebase

type FirebaseApp = firebase.app.App

type FirebaseUser = firebase.User

Answer 13

Answer №7

Developing with Typescript in React Native, sourced from the React Native Firebase Documentation

import * as React from 'react';
import { useEffect, useState } from 'react';
import auth, { FirebaseAuthTypes } from '@custom-react-native-firebase/auth';

function Application() {
  const [loading, setLoading] = useState<boolean>(true);
  const [user, setUser] = useState<FirebaseAuthTypes.User | null>(null);

  useEffect(() => {
    auth().onAuthStateChanged(userState => {
      setUser(userState);

      if (loading) {
        setLoading(false);
      }
    });
  }, []);
}

export default Application;

Answer 14

Developing with Typescript in React Native, sourced from the React Native Firebase Documentation

import * as React from 'react';
import { useEffect, useState } from 'react';
import auth, { FirebaseAuthTypes } from '@custom-react-native-firebase/auth';

function Application() {
  const [loading, setLoading] = useState<boolean>(true);
  const [user, setUser] = useState<FirebaseAuthTypes.User | null>(null);

  useEffect(() => {
    auth().onAuthStateChanged(userState => {
      setUser(userState);

      if (loading) {
        setLoading(false);
      }
    });
  }, []);
}

export default Application;

Import Firebase User in Typescript v8 definition

Answer №1

Answer №2

Answer №3

Answer №4

Answer №5

Answer №6

Answer №7

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