Authentication

Overview

LaunchNext uses better-auth for handling authentication. It provides a simple, secure, and flexible authentication solution for Next.js applications.

Supported Providers

• Email + Password — Traditional authentication with hashed passwords
• Magic Link — Passwordless authentication via email
• Google OAuth — Sign in with Google
• GitHub OAuth — Sign in with GitHub

Setup

1. Install Dependencies

pnpm add better-auth

2. Configure Environment Variables

Add the required environment variables to your .env.local:

AUTH_SECRET=generate-a-random-secret
GOOGLE_CLIENT_ID=your-google-client-id
GOOGLE_CLIENT_SECRET=your-google-client-secret

3. Create API Route

Create the catch-all API route at src/app/api/auth/[...all]/route.ts:

import { auth } from "@/lib/auth";

export const { GET, POST } = auth.handlers;

Protected Routes

Use middleware or server-side checks to protect routes:

import { auth } from "@/lib/auth";

export default async function DashboardPage() {
  const session = await auth();
  if (!session) redirect("/signin");
  // ...
}