Svelte Supabase Starter

A production-ready starter template built with SvelteKit, Supabase, shadcn/svelte, and Tailwind CSS v4.

Features

• Authentication — Email/password sign-up & sign-in, GitHub OAuth, forgot/reset password, email verification resend
• Session Management — Secure server-side JWT validation via safeGetSession(), cookie-based SSR with @supabase/ssr
• Route Protection — Hooks-based auth guard + layout-level redirects for protected and public routes
• UI Components — 22+ shadcn/svelte components (data table, sidebar, charts, drawers, dropdowns, and more)
• Dashboard — Sample dashboard with interactive charts, drag-and-drop data table, and section cards
• Database — Profiles table migration with RLS policies and auto-profile creation trigger
• Type Safety — Full TypeScript with typed Supabase client (SupabaseClient<Database>) and Zod schema validation
• CSRF Protection — Origin-based CSRF middleware for mutation endpoints

Tech Stack

Layer	Technology
Framework	SvelteKit + Svelte 5
Auth & Database	Supabase (@supabase/ssr, @supabase/supabase-js)
Styling	Tailwind CSS v4
UI Components	shadcn/svelte (bits-ui, vaul-svelte, svelte-sonner)
Charts	LayerChart + D3
Data Table	TanStack Table + DND Kit
Validation	Zod
Icons	Tabler Icons, Lucide

Getting Started

Prerequisites

• Node.js 18+
• A Supabase project (or use the local dev setup below)

Setup

1. Clone and install

   git clone <repo-url>&&cd svelte-supabase
   npm install

2. Configure environment

   cp .env.example .env

   Fill in your Supabase project URL and publishable key from your Supabase dashboard.

3. Run the migration

   Apply the profiles table migration to your Supabase project via the SQL editor or the Supabase CLI:

   npx supabase db push

4. Start developing

   npm run dev

Local Supabase Development

To run Supabase locally with Docker:

npx supabase start

This starts a local Supabase instance using the config in supabase/config.toml. The local dashboard is available at http://127.0.0.1:54323.

Project Structure

src/
├── hooks.server.ts # Supabase client + auth guard
├── app.d.ts # Global type definitions
├── lib/
│ ├── components/
│ │ ├── auth/ # Login, signup, forgot/reset password forms
│ │ ├── dashboard/ # Data table, charts, section cards
│ │ ├── layout/ # Sidebar, navigation, header
│ │ └── ui/ # shadcn/svelte components
│ ├── schemas/ # Zod validation schemas
│ ├── types/
│ │ └── database.ts # Supabase Database type (generated)
│ ├── utils/
│ │ └── csrf.ts # CSRF protection
│ └── utils.ts # Tailwind class merge helpers
├── routes/
│ ├── (app)/ # Protected routes (requires auth)
│ │ ├── dashboard/ # Dashboard page
│ │ └── sign-out/ # Sign-out action
│ ├── (auth)/ # Public auth routes
│ │ ├── sign-in/ # Login page
│ │ ├── sign-up/ # Registration page
│ │ ├── forgot-password/ # Password reset request
│ │ ├── reset-password/ # New password form
│ │ └── auth/ # Callback, confirm, error endpoints
│ ├── +layout.svelte # Root layout (auth listener, toaster)
│ ├── +layout.server.ts # Session hydration
│ ├── +layout.ts # Browser/server Supabase client
│ └── +error.svelte # Global error page
supabase/
├── config.toml # Local dev configuration
├── migrations/ # Database migrations
│ └── 00000000000000_init.sql # Profiles table + RLS + trigger
└── seed.sql # Seed data placeholder

Scripts

Command	Description
npm run dev	Start development server
npm run build	Build for production
npm run preview	Preview production build
npm run check	Type-check with svelte-check
npm run db:types	Generate TypeScript types from Supabase schema

GitHub OAuth Setup

1. Create a GitHub OAuth app at github.com/settings/developers
2. Set the callback URL to https://<your-project-ref>.supabase.co/auth/v1/callback
3. Add the client ID and secret to your Supabase dashboard under Auth > Providers > GitHub
4. For local development, set them in your .env and supabase/config.toml

Deployment

This template uses @sveltejs/adapter-auto which automatically selects the right adapter for your deployment target (Vercel, Netlify, Cloudflare, etc.).

npm run build

Make sure to set PUBLIC_SUPABASE_URL and PUBLIC_SUPABASE_PUBLISHABLE_KEY as environment variables in your hosting platform.

License

MIT