nextjs-supabase-auth

# Next.js + Supabase Auth Expert integration of Supabase Auth with Next.js App Router ## Capabilities - nextjs-auth - supabase-auth-nextjs - auth-middleware - auth-callback ## Prerequisites - Required skills: nextjs-app-router, supabase-backend ## Patterns ### Supabase Client Setup Create properly configured Supabase clients for different contexts **When to use**: Setting up auth in a Next.js project // lib/supabase/client.ts (Browser client) 'use client' import { createBrowserClient } from '@supabase/ssr' export function createClient() { return createBrowserClient( process.env.NEXT_PUBLIC_SUPABASE_URL!, process.env.NEXT_PUBLIC_SUPABASE_ANON_KEY! ) } // lib/supabase/server.ts (Server client) import { createServerClient } from '@supabase/ssr' import { cookies } from 'next/headers' export async function createClient() { const cookieStore = await cookies() return createServerClient( process.env.NEXT_PUBLIC_SUPABASE_URL!, process.env.NEXT_PUBLIC_SUPABASE_ANON_KEY!, { cookies: { getAll() { return cookieStore.getAll() }, setAll(cookiesToSet) { cookiesToSet.forEach(({ name, value, options }) => { cookieStore.set(name, value, options) }) }, }, } ) } ### Auth Middleware Protect routes and refresh sessions in middleware **When to use**: You need route protection or session refresh // middleware.ts import { createServerClient } from '@supabase/ssr' imp...