TurboStack – AI-native SaaS starter kit with Next.js and Elysia

Summary: TurboStack is an AI-native SaaS boilerplate designed to maintain clean architecture and type safety when coding with AI tools like Cursor and Windsurf. It integrates Next.js 16+, ElysiaJS on Bun runtime, Turborepo, Prisma, Better Auth, and Polar.sh for a scalable monorepo setup.

What it does

TurboStack provides strict context rules (.cursorrules and .windsurfrules) that guide AI assistants to follow the intended architecture, preventing code duplication and type safety issues. It ensures backend and frontend code remain properly separated within a monorepo.

Who it's for

It targets developers using AI coding assistants who require clean architecture, type safety, and performance in SaaS projects built with Next.js and Elysia.

Why it matters

TurboStack solves the problem of AI-generated code breaking project structure and type safety by enforcing architectural guardrails during AI-assisted development.