Supabase Auth + Next.js: Row Level Security, Magic Links, and OAuth in 30 Minutes

Supabase Auth + Next.js: Row Level Security, Magic Links, and OAuth in 30 Minutes Supabase is PostgreSQL + auth + storage + realtime, hosted. Here's a complete auth setup with RLS in under an hour. Setup npm install @supabase/supabase-js @supabase/ssr // lib/supabase/client.ts 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 import { createServerClient } from '@supabase/ssr' import { cookies } from 'next/headers' export function createServerSupabaseClient() { const cookieStore = cookies() return createServerClient( process.env.NEXT_PUBLIC_SUPABASE_URL!, process.env.NEXT_PUBLIC_SUPABASE_ANON_KEY!, { cookies: { get: (name) => cookieStore.get(name)?.value, set: (name, value, options) => cookieStore.set({ name, value, ...options }), remove: (name, options) => cookieStore.set({ name, value: '', ...options }),