Replit usually creates monorepo structures for full-stack applications. This means your client (React or Next.js) and server (Express/Node.js) code live in the same repository but in separate folders.

my-app/

├── client/ # Frontend (React, Next.js)

├── server/ # Backend (Node.js, Express)

├── package.json # Optional, shared config

└── .env # (Optional, shared env)

Example repo https://github.com/CotNeo/playable-factory