Fixes & Improvements for Express.js Routing and Error Handling

Project Goal: Refactor the Express.js backend to ensure clear route organization and implement consistent error handling across the application. Key Fixes: Modular Route Structure Split monolithic route file into multiple modules based on feature domains (e.g., authRoutes, userRoutes, reportRoutes) Created a central router/index.js to load all route modules in a clean and scalable way Error Handling Middleware Implemented centralized error-handling middleware using app.use(errorHandler) Now all thrown errors and async failures return standardized JSON responses with correct HTTP status codes Validation Improvements Integrated express-validator to validate input data (e.g., email, password length) directly in route definitions Added automatic error return if validation fails, improving frontend-backend integration Authorization Middleware Improved the structure of authMiddleware and added role-based access control logic Ensures that protected routes are only accessible to authorized users (e.g., admin) Improved Async Flow Wrapped all async route handlers in try-catch blocks or passed through custom asyncHandler() utility to prevent unhandled promise rejections Logging and Debugging Added request logging and clearer debug messages for easier monitoring and faster debugging Results: The backend is now more maintainable, scalable, and secure All routes are cleanly separated, and errors are consistent and informative Ready for production deployment or further API expansion Apply Job!