@auth0/auth0-react

What is @auth0/auth0-react?

@auth0/auth0-react is a library that provides React hooks and components to integrate Auth0 authentication and authorization into React applications. It simplifies the process of adding authentication, handling user sessions, and securing routes.

What are @auth0/auth0-react's main functionalities?

Authentication

This feature allows you to integrate Auth0 authentication into your React application. The Auth0Provider component wraps your application and provides authentication context. The useAuth0 hook is used to access authentication methods like loginWithRedirect and logout.

import { Auth0Provider, useAuth0 } from '@auth0/auth0-react';

const App = () => (
  <Auth0Provider
    domain="YOUR_DOMAIN"
    clientId="YOUR_CLIENT_ID"
    redirectUri={window.location.origin}
  >
    <YourComponent />
  </Auth0Provider>
);

const YourComponent = () => {
  const { loginWithRedirect, logout, isAuthenticated } = useAuth0();

  return (
    <div>
      {!isAuthenticated && (
        <button onClick={() => loginWithRedirect()}>Log in</button>
      )}
      {isAuthenticated && (
        <button onClick={() => logout({ returnTo: window.location.origin })}>Log out</button>
      )}
    </div>
  );
};

User Profile

This feature allows you to access and display the authenticated user's profile information. The useAuth0 hook provides the user object, which contains details like name, email, and profile picture.

import { useAuth0 } from '@auth0/auth0-react';

const UserProfile = () => {
  const { user, isAuthenticated } = useAuth0();

  if (!isAuthenticated) {
    return <div>Please log in to see your profile.</div>;
  }

  return (
    <div>
      <img src={user.picture} alt={user.name} />
      <h2>{user.name}</h2>
      <p>{user.email}</p>
    </div>
  );
};

Securing Routes

This feature allows you to secure specific routes in your React application. The withAuthenticationRequired higher-order component ensures that only authenticated users can access the protected routes. If a user is not authenticated, they will be redirected to the login page.

import { useAuth0, withAuthenticationRequired } from '@auth0/auth0-react';
import { BrowserRouter as Router, Route, Switch } from 'react-router-dom';

const ProtectedRoute = ({ component, ...args }) => (
  <Route
    component={withAuthenticationRequired(component, {
      onRedirecting: () => <div>Loading...</div>,
    })}
    {...args}
  />
);

const App = () => (
  <Router>
    <Switch>
      <Route path="/public" component={PublicComponent} />
      <ProtectedRoute path="/protected" component={ProtectedComponent} />
    </Switch>
  </Router>
);

Other packages similar to @auth0/auth0-react

react-oauth

react-oauth is a library that provides OAuth2 authentication for React applications. It supports multiple OAuth providers and offers hooks and components for integrating authentication. Compared to @auth0/auth0-react, react-oauth is more generic and can be used with various OAuth providers, whereas @auth0/auth0-react is specifically designed for Auth0.

react-aad-msal

react-aad-msal is a library for integrating Microsoft Azure Active Directory (AAD) authentication into React applications. It provides hooks and components for handling authentication and user sessions. Compared to @auth0/auth0-react, react-aad-msal is tailored for Microsoft AAD, while @auth0/auth0-react is focused on Auth0.

react-firebase-auth

react-firebase-auth is a library that simplifies Firebase authentication in React applications. It provides hooks and components for managing user authentication and sessions with Firebase. Compared to @auth0/auth0-react, react-firebase-auth is specific to Firebase, whereas @auth0/auth0-react is specific to Auth0.

README

@auth0/auth0-react

Auth0 SDK for React Single Page Applications (SPA).

Table of Contents

• Documentation
• Installation
• Getting Started
• Contributing
• Support + Feedback
• Troubleshooting
• Frequently Asked Questions
• Vulnerability Reporting
• What is Auth0
• License

Documentation

• API Reference
• Quickstart Guide

Installation

Using npm

npm install @auth0/auth0-react

Using yarn

yarn add @auth0/auth0-react

Getting Started

Configure the SDK by wrapping your application in Auth0Provider:

// src/index.js
import React from 'react';
import ReactDOM from 'react-dom';
import { Auth0Provider } from '@auth0/auth0-react';
import App from './App';

ReactDOM.render(
  <Auth0Provider
    domain="YOUR_AUTH0_DOMAIN"
    clientId="YOUR_AUTH0_CLIENT_ID"
    redirectUri={window.location.origin}
  >
    <App />
  </Auth0Provider>,
  document.getElementById('app')
);

Use the useAuth0 hook in your components to access authentication state (isLoading, isAuthenticated and user) and authentication methods (loginWithRedirect and logout):

// src/App.js
import React from 'react';
import { useAuth0 } from '@auth0/auth0-react';

function App() {
  const {
    isLoading,
    isAuthenticated,
    error,
    user,
    loginWithRedirect,
    logout,
  } = useAuth0();

  if (isLoading) {
    return <div>Loading...</div>;
  }
  if (error) {
    return <div>Oops... {error.message}</div>;
  }

  if (isAuthenticated) {
    return (
      <div>
        Hello {user.name}{' '}
        <button onClick={() => logout({ returnTo: window.location.origin })}>
          Log out
        </button>
      </div>
    );
  } else {
    return <button onClick={loginWithRedirect}>Log in</button>;
  }
}

export default App;

If you're using TypeScript, you can pass a type parameter to useAuth0 to specify the type of user:

const { user } = useAuth0<{ name: string }>();

user.name; // is a string

Use with a Class Component

Use the withAuth0 higher order component to add the auth0 property to Class components:

import React, { Component } from 'react';
import { withAuth0 } from '@auth0/auth0-react';

class Profile extends Component {
  render() {
    // `this.props.auth0` has all the same properties as the `useAuth0` hook
    const { user } = this.props.auth0;
    return <div>Hello {user.name}</div>;
  }
}

export default withAuth0(Profile);

Protect a Route

Protect a route component using the withAuthenticationRequired higher order component. Visits to this route when unauthenticated will redirect the user to the login page and back to this page after login:

import React from 'react';
import { withAuthenticationRequired } from '@auth0/auth0-react';

const PrivateRoute = () => <div>Private</div>;

export default withAuthenticationRequired(PrivateRoute, {
  // Show a message while the user waits to be redirected to the login page.
  onRedirecting: () => <div>Redirecting you to the login page...</div>,
});

Note If you are using a custom router, you will need to supply the Auth0Provider with a custom onRedirectCallback method to perform the action that returns the user to the protected page. See examples for react-router, Gatsby and Next.js.

Call an API

Call a protected API with an Access Token:

import React, { useEffect, useState } from 'react';
import { useAuth0 } from '@auth0/auth0-react';

const Posts = () => {
  const { getAccessTokenSilently } = useAuth0();
  const [posts, setPosts] = useState(null);

  useEffect(() => {
    (async () => {
      try {
        const token = await getAccessTokenSilently({
          audience: 'https://api.example.com/',
          scope: 'read:posts',
        });
        const response = await fetch('https://api.example.com/posts', {
          headers: {
            Authorization: `Bearer ${token}`,
          },
        });
        setPosts(await response.json());
      } catch (e) {
        console.error(e);
      }
    })();
  }, [getAccessTokenSilently]);

  if (!posts) {
    return <div>Loading...</div>;
  }

  return (
    <ul>
      {posts.map((post, index) => {
        return <li key={index}>{post}</li>;
      })}
    </ul>
  );
};

export default Posts;

For a more detailed example see how to create a useApi hook for accessing protected APIs with an access token.

Contributing

We appreciate feedback and contribution to this repo! Before you get started, please see the following:

• Auth0's general contribution guidelines
• Auth0's code of conduct guidelines
• This repo's contribution guide

Support + Feedback

For support or to provide feedback, please raise an issue on our issue tracker.

Troubleshooting

For information on how to solve common problems, check out the Troubleshooting guide

Frequently Asked Questions

For a rundown of common issues you might encounter when using the SDK, please check out the FAQ.

Vulnerability Reporting

Please do not report security vulnerabilities on the public GitHub issue tracker. The Responsible Disclosure Program details the procedure for disclosing security issues.

What is Auth0?

Auth0 helps you to easily:

• Implement authentication with multiple identity providers, including social (e.g., Google, Facebook, Microsoft, LinkedIn, GitHub, Twitter, etc), or enterprise (e.g., Windows Azure AD, Google Apps, Active Directory, ADFS, SAML, etc.)
• Log in users with username/password databases, passwordless, or multi-factor authentication
• Link multiple user accounts together
• Generate signed JSON Web Tokens to authorize your API calls and flow the user identity securely
• Access demographics and analytics detailing how, when, and where users are logging in
• Enrich user profiles from other data sources using customizable JavaScript rules

Why Auth0?

License

This project is licensed under the MIT license. See the LICENSE file for more info.