A comprehensive, step-by-step guide on integrating Firebase Authentication with Next.js using the zero-bundle size `next-firebase-auth-edge` library.
Introduction to next-firebase-auth-edge You likely found this article while searching for ways to add Firebase Authentication to your existing or new Next.js application. You aim to make a smart, unbiased, and future-oriented decision that will maximize the chances of your app being successful. As the creator of next-firebase-auth-edge, I must admit that providing an entirely unbiased opinion is not my forte, but at least I’ll try to justify the approach I took when designing the library.
=; export async function middleware { return authMiddleware=> { if ) { return redirectToHome; } return NextResponse.next; }, handleInvalidToken: async => { console.info; return redirectToLogin; }, handleError: async => { console.error; return redirectToLogin; } }); } export const config={ matcher: , }; That should be it. We’ve implemented all redirect rules. Let’s break this down. const
=; handleValidToken: async => { if ) { return redirectToHome; } return NextResponse.next; }, is called when valid user credentials are attached to the request, ie. user is authenticated. It is called with object as the first, and as the second argument. It should resolve with . handleValidToken tokens Modified Request Headers NextResponse from is a helper function that returns an object that can be simplified to redirectToHome next-firebase-auth-edge NextResponse.
.includes /login /register handleInvalidToken: async => { console.info; return redirectToLogin; }, is called when something happens. One of this expected events is user seeing your app for the first time, from another device, or after credentials have expired.
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