The Folder Structure

• This folder structure is solid and covers most aspects of a well-organized Node.js, Express, TypeScript application.

src/

• config: Contains configuration files for the application.

• constants: Holds constant values used throughout the application.

• controllers: Contains the controller logic for handling requests and responses.

• interfaces: Defines TypeScript interfaces used across the application.

• middlewares: Houses custom middleware functions.

• models: Defines data models and schemas.

• repository: Contains data access logic.

• routes: Defines the API routes and their corresponding controllers.

• services: Implements core business logic.

• utils: Stores utility functions and helper modules.

• validators: Contains input validation logic.

• app.ts: The main Express application setup file.

• index.ts: The entry point of the application.