How to authenticate firebase with GitHub in ReactJS ?

The following approach covers how to authenticate firebase with GitHub in react. We have used the firebase module to achieve so.

Creating React Application And Installing Module:

Step 1: Create a React app using the following command:

npx create-react-app gfgapp

Step 2: After creating your project folder i.e. gfgapp, move to it using the following command:

cd gfgapp

Project structure: Our project structure will look like this.

Step 3: After creating the ReactJS application, Install the firebase module using the following command:

npm install firebase@8.3.1 --save

Step 4: Go to your firebase dashboard and create a new project and copy your credentials.

const firebaseConfig = {
      apiKey: "your api key",
      authDomain: "your credentials",
      projectId: "your credentials",
      storageBucket: "your credentials",
      messagingSenderId: "your credentials",
      appId: "your credentials"
};

Step 5: Initialize the Firebase into your project by creating Firebase.js file with the following code.

Firebase.js

import firebase from 'firebase';

const firebaseConfig = {
    // Your Credentials
  };

firebase.initializeApp(firebaseConfig);

var auth = firebase.auth();
var provider = new firebase.auth.GithubAuthProvider();
export {auth , provider};

Step 6: Register your app as a developer application on GitHub and get your app’s OAuth 2.0 Client ID and Client Secret.

For Authorization callback URL go to your authentication section and click on Github sign-in method. After that copy the callback URL.

Step 7: Now Enable the Github sign-in method by entering your Client ID and Client Secret.

Step 8: Now install the npm package i.e. react-firebase-hooks using the following command.

npm i react-firebase-hooks

This package helps us to listen to the current state of the user.

Step 9: Create two files i.e. login.js and main.js with the following code.

login.js

import {auth , provider} from './firebase';
const Login = ()=>{

    // SignIn with GitHub
    const submit = ()=>{
        auth.signInWithPopup(provider).catch(alert);
    }
    return (
        <div>
            <center>
            <button onClick={submit}>
                SignIn with Github
            </button>
            </center>
        </div>
    )
}
export default Login;

main.js

import {auth} from './firebase';
const Main = ()=>{
    const logout = ()=>{
        auth.signOut();
    }
    return(
        <div>
            Welcome

            {
                auth.currentUser.email
            }

            <button onClick={logout}>
                Logout
            </button>
        </div>
    )
}
export default Main;

Step 10: Finally Import all required files in App.js file as shown below.

App.js

import './App.css';
import Login from './login';
import {auth} from './firebase';
import Main from './main';
import {useAuthState} from 'react-firebase-hooks/auth';
function App() {
  const [user] = useAuthState(auth);
  return (
    user ? <Main/> : <Login/>
  );
}

export default App;

Step to Run Application: Run the application using the following command from the root directory of the project:

npm start

Output: Now open your browser and go to http://localhost:3000/, you will see the following output: