Node.js Scaffolding

Build a compact TypeScript Express API whose structure and code are readable and understandable to the person using or maintaining it. Preserve existing project choices and files; do not replace a working structure unless the user explicitly asks for a rewrite.

Choose the requested mode

• Base scaffold: create the TypeScript Express foundation. Do not add a database connection.
• Authentication: extend the base with Passport JWT authentication stored in an HTTP-only cookie.
• MongoDB: add Mongoose only when the user explicitly asks to configure MongoDB.

If the request combines modes, apply them in that order.

Base scaffold

1. Create the complete source tree first

Create every directory before installing packages or writing implementation files: