How to Build a Full-Stack SaaS App with TanStack Start, Elysia, and Neon
A comprehensive guide to building a production-ready full-stack SaaS application using TanStack Start, Elysia, Drizzle ORM, Neon PostgreSQL, Better Auth, Stripe, and Inngest. Covers end-to-end type safety from database schema to React components without code generation, using Eden Treaty for typed API calls. Topics include project setup, database schema design, embedding Elysia inside TanStack Start, GitHub OAuth authentication, a repeatable four-layer feature pattern (schema → API → hooks → UI), Stripe payment processing with webhook handling, and background job processing with Inngest.