About this guide
This development guide walks you through everything you need to do to build a high-quality Next.js app integrated with Firebase Auth. Check out the tasks below to get started. To save time, you can also use our boilerplate, which gives you a complete React codebase with all of these tasks done for you. Okay, let's dive in!
Tasks
Setup your Next.js app
Create a Next.js app usingnpx create-next-app
and then run your project locally with thenpm run dev
command.Create a Firebase AuthProvider and useAuth hook
Create anAuthProvider
component that fetches the current user from Firebase Auth, subscribes to changes, stores the user in state, and then makes all this data available to child components usingContext.Provider
. Make sure to update your Next.jsApp
component so thatAuthProvider
wraps all your pages. You'll then create auseAuth
hook that reads the user withuseContext
and returns its value. This will enable any component to calluseAuth
to get the current user and re-render when it changes.Create a Protect pages with a Firebase requireAuth HOC
requireAuth
higher order component for pages that should only be viewable by authenticated users. It should call youruseAuth
hook internally to get the current user, show a loading indicator while waiting on the response, and then either render the page or redirect to/signin
depending on whether the user is authenticated.Some Firebase actions, such as password resetting and email verification, will take the user through an email flow and then have them complete the process on a page hosted by Firebase. For a better experience, you can handle this within your own app. You ll need to create a custom Firebase Create a custom Firebase email action handleremail action route that reads the
mode
andoobCode
params passed by Firebase and then display the appropriate UI (such as a form for selecting a new password). Make sure to handle success/error states with and display a message to the user.Build your authentication UI
Create an authentication UI using your component library of choice and Firebase Auth functions. You'll want routes for user sign-up, sign-in, forgot password, and change password. Make sure you properly validate inputs and display any errors returned by Firebase Auth. You may also want to use a library, such as React Hook Form, for managing form state.Link user to analytics session
You can connect Google Analytics sessions to the current authenticated user with the User ID feature. This allows you to see what your users are doing across sessions and devices. You'll need to update youruseAuth
hook to set theuser_id
property whenever the user changes.
Get the code
You can get the code for this guide with our Next.js and Firebase Auth Boilerplate. You'll get a complete Next.js codebase with Firebase Auth integration, all the tasks listed above done for you, and a responsive multi-page template. It should save you about two weeks of development time.
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