A Next.js + Firebase starter that ships the part everyone re-implements from scratch: real server-side authentication. The point is to skip straight to building features instead of re-wiring Firebase auth on every new project.
What you get on day one
Server-side auth — sessions verified with the Firebase Admin SDK, not just client-side checks
The full account lifecycle — Google and anonymous sign-in, anonymous→Google upgrade, and account deletion
The boring-but-needed bits — a notification system, an auth modal, reusable components, SEO defaults, and a Vercel-ready deploy
Type-safe throughout — TypeScript + Tailwind, structured so you extend it rather than fight it
The trickiest thing it documents isn’t code — it’s the Firebase env setup. The Admin and Web SDK configs have to be supplied as single-line JSON with the private_key newlines escaped, which is exactly the kind of silent-failure trap that eats an afternoon. The starter spells it out so you don’t rediscover it the hard way.
