# Cursor Rules - Group 1: Development Philosophy & Coding Conventions 1. Overall Architecture & Structure: - Enforce a clear separation of concerns between the backend (Express, Passport, Swagger-documented API routes, service layers, and configuration files) and the frontend (Next.js with React and TypeScript, using functional components, hooks, and proper layouts). - Ensure that backend modules (routes, services, helpers) and frontend components (pages, components, layouts) are organized for reusability and maintainability. 2. Coding Style & Formatting: - For the backend (JavaScript): • Use ES6+ features (const/let, arrow functions) consistently. • Follow Prettier and ESLint configurations (e.g., consistent 2-space indentation, semicolons, and single quotes). • Maintain clear asynchronous patterns with helper wrappers (e.g., wrapAsync) for error handling. • Document API endpoints with inline Swagger comments to ensure API clarity and consistency. - For the frontend (TypeScript/React): • Use functional components with strict typing and separation of concerns. • Follow naming conventions: PascalCase for components and types/interfaces, camelCase for variables, hooks, and function names. • Utilize hooks (useEffect, useState) to manage state and lifecycle in a clear and concise manner. 3. Code Quality & Best Practices: - Ensure code modularity by splitting complex logic into smaller, testable units (e.g., dedicated route handlers, service functions, and reusable UI components). - Write self-documenting code and add comments where the logic is non-trivial, especially for asynchronous operations. - Embrace declarative programming and adhere to SOLID principles, making sure that responsibilities are clearly delineated between layers. 4. Consistency & Tools Integration: - Leverage existing tools like Prettier and ESLint to automatically enforce style and formatting rules in both backend and frontend codebases. - Use TypeScript in the frontend to ensure type safety and catch errors early in the development cycle. - Maintain uniformity in API design and error handling strategies (e.g., consistent use of passport for authentication and common error handling middleware).