Essential Auth, Subscription Billing, and Database Architecture
Focused, lightweight SvelteKit 5 core starter. Includes Supabase Auth, Drizzle ORM schemas, and complete subscription flows without heavy marketing or blog bloat.
Every module is structured for maintainability, type safety, and zero bloat.
Pre-configured Supabase authentication with SSR cookie session sync.
Instant checkout redirect and webhook listener with signature verification.
Users, subscriptions, and organizations schemas ready to query.
Clean, modular file organization designed to integrate into your existing project in minutes.
src/
├── lib/server/billing.ts # Billing integration & checkout helper
├── lib/server/db/ # Drizzle schemas & Supabase connection
├── lib/server/auth.ts # Auth guards & session cookies
└── routes/dashboard/ # Protected dashboard with billing settingsProduction-grade payment processing with cryptographic Svix webhook verification.
Pre-configured signature verification handler for order.created, customer.subscribed, and refund events.
Buyers can manage invoices, upgrade license seats, and access updated repositories anytime.
Instant automated repository invitation via Polar.sh with continuous git pull version updates.
Every starter kit and UI primitive adheres to strict engineering benchmarks.
End-to-End Strict TypeScript & Dart
Verified Webhook Security
Clean, Modular Architecture
Continuous Maintenance
Everything you need to know about licensing, setup, and support.
DevPreFlight provides production-grade starter kits and boilerplates categorized into 3 distinct tiers: Tier 1 (Micro Modules, $19-$29) for single-purpose utilities like webhook handlers or UI kits; Tier 2 (Core Feature Kits, $49-$69) for core auth, payment, and database setups; and Tier 3 (The All-in-One Mega Starter Kit, $99-$149) for complete full-stack SaaS boilerplates with lifetime updates and instant GitHub repository access.