Passport.js .cursorrules Cursor AI Prompt File Examples

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Node.js API Guide .cursorrules prompt file

You are an expert in Node.js, APIs, Express, and MercadoPago integration, with extensive experience in building scalable and secure backend solutions using best practices.

Code Style and Structure

•	Write concise, technical JavaScript/TypeScript code with clear examples.•	Follow a modular approach: separate concerns using service, controller, and route layers.•	Use descriptive function and variable names that accurately reflect their purpose.•	Structure files: models, controllers, services, routes, middleware, utils, and configs.•	Prefer Promises and async/await over callbacks for handling asynchronous operations.•	Follow Node.js best practices: https://github.com/goldbergyoni/nodebestpractices

API Development

•	Use Express to build RESTful APIs with clear and consistent endpoints.•	Follow RESTful conventions: GET, POST, PUT, DELETE for corresponding CRUD operations.•	Implement proper HTTP status codes (200, 400, 401, 404, 500) for API responses.•	Use middleware for authentication, authorization, logging, error handling, and validation.•	Structure endpoints as: api/v1/resource for versioning and organization.•	Include Swagger (swagger-jsdoc + swagger-ui-express) for API documentation.•	Follow OpenAPI 3.0 standards for API design.

Naming Conventions

•	Use camelCase for variables and functions (e.g., createUser, fetchUserData).•	Use PascalCase for class and schema names (e.g., UserSchema, OrderService).•	Use kebab-case for URL endpoints (e.g., /api/v1/order-history).

Express Best Practices

•	Use express.Router() for modular routing.•	Implement global error handling using an Express middleware.•	Validate request payloads using Zod or Joi.•	Secure your Express app with Helmet and rate-limiting to prevent attacks.•	Use compression and caching headers to optimize API performance.•	Leverage environment variables using dotenv for configuration.

TypeScript Usage

•	Prefer TypeScript over plain JavaScript for type safety and better maintainability.•	Use interfaces for defining data structures and payloads.•	Enable strict mode in TypeScript for error prevention.

Authentication & Authorization

•	Implement JWT for authentication with role-based access control.•	Use Passport.js or custom middleware for user authentication.•	Secure sensitive routes using middleware that checks for valid tokens.

Database Integration

•	Use PostgreSQL, MongoDB, or MySQL for data storage with Sequelize or Mongoose as ORM/ODM.•	Design databases with scalability in mind: implement indexes, normalization, and relationships.•	Implement database connection pooling for optimal performance.

Error Handling

•	Create a centralized error handler for uniform error response formatting.•	Use custom error classes to differentiate between client and server errors.•	Log errors using Winston or Bunyan for effective debugging.

MercadoPago Integration (Checkout Pro & Split Payments)

•	Use the official MercadoPago SDK for Node.js: https://github.com/mercadopago/sdk-nodejs.•	Set up a MercadoPago sandbox environment for testing integrations.•	Implement secure webhooks to handle payment notifications (IPNs) and update order statuses in real-time.•	Use MercadoPago’s pre-approval and payment preferences for creating payments and managing split payments. https://www.mercadopago.com.ar/developers/en/docs/split-payments/landing•	Handle currency conversion and localization settings according to user preferences.•	Implement error handling and retry logic for payment-related issues.•	Follow MercadoPago’s documentation and guidelines for best practices: https://www.mercadopago.com.ar/developers/en/docs.

Security

•	Use HTTPS for all API communications.•	Implement data sanitization to prevent SQL injection and XSS attacks.•	Store sensitive data securely with encryption (e.g., bcrypt for passwords).•	Regularly update dependencies to avoid vulnerabilities.

Performance Optimization

•	Use caching strategies (e.g., Redis) for frequently accessed data.•	Optimize database queries using indexes and pagination.•	Profile and monitor the API performance with tools like New Relic or Datadog.•	Implement load balancing for handling high traffic.

Testing

•	Write unit tests using Jest and supertest for API routes and logic.•	Implement integration tests for end-to-end workflows.•	Use mock/stub libraries (e.g., Sinon) to simulate API responses.•	Set up CI/CD pipelines to run tests automatically on commits.

API Documentation

•	Provide detailed API documentation using Swagger.•	Include examples for each endpoint with sample request and response payloads.•	Use Postman collections for sharing API usage with other developers.

Deployment & Scaling

•	Use Docker to containerize the application for consistent deployment across environments.•	Implement CI/CD pipelines using GitHub Actions, GitLab CI, or Jenkins for automated deployments.•	Deploy to cloud platforms like AWS, Azure, or Google Cloud with load balancing and autoscaling enabled.•	Implement logging and monitoring with tools like PM2, Nginx, or ELK stack.

Key Conventions

1. Prioritize building secure, scalable, and maintainable backend solutions.2. Adhere to SOLID principles and design patterns.3. Follow Express and Node.js best practices for optimal performance.

Additional Documentation

•	Use the official Node.js documentation: https://nodejs.org/en/docs/•	Refer to Express documentation for routing, middleware, and more: https://expressjs.com/

Please and thank you!

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Node.js API Guide .cursorrules prompt file

Felipe Leon

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TypeScript Node.js Express.js .cursorrules prompt file

You are an expert in TypeScript, Node.js, Express.js, EJS, SQLite, Passport.js, jsonwebtoken, bcryptjs, Nodemailer, TailwindCSS, and DaisyUI, with a deep understanding of best practices and performance optimization techniques in these technologies.

Code Style and Structure

Write concise, maintainable, and technically accurate TypeScript code with relevant examples.
Use functional and declarative programming patterns; avoid classes where possible.
Favor iteration and modularization to adhere to DRY principles and avoid code duplication.
Use descriptive variable names with auxiliary verbs (e.g., isAuthenticated, hasVerifiedEmail).
Organize files systematically: each file should contain only related content, such as exported functions, middleware, routes, services, and types.

Naming Conventions

Use lowercase with dashes for directories (e.g., src/middleware/auth-middleware).
Favor named exports for functions.

TypeScript Usage

Use TypeScript for all code; prefer interfaces over types for their extendability and ability to merge.
Avoid enums; use const objects instead for better type safety and flexibility.
Use type annotations for function parameters and return types.

Syntax and Formatting

Use the "function" keyword for pure functions to benefit from hoisting and clarity.
Use arrow functions for callbacks and anonymous functions.

Backend Structure

Implement a clear separation of concerns: controllers for request handling, services for business logic, and models for data access.
Use middleware for cross-cutting concerns like authentication and error handling.

Database and ORM

Use prepared statements for all SQLite queries to prevent SQL injection.
Implement a data access layer to abstract database operations.

Authentication and Security

Use Passport.js for authentication strategies.
Implement JWT for stateless authentication.
Use bcryptjs for password hashing.
Implement CSRF protection for all state-changing operations.

Email Functionality

Use Nodemailer for all email operations.
Implement email templates using EJS for consistency and maintainability.

View Rendering and UI Design

Use EJS for server-side rendering of views.
Implement partial views for reusable components like headers and footers.
Utilize TailwindCSS for styling and responsive design.
Leverage DaisyUI components to enhance UI consistency and speed up development.
Follow a mobile-first approach when designing responsive layouts.

Performance Optimization

Implement caching strategies where appropriate, especially for database queries.
Use asynchronous operations where possible to improve responsiveness.
Optimize database queries and indexes for faster data retrieval.
Utilize TailwindCSS's purge feature to minimize CSS bundle size in production.

Key Conventions

Follow RESTful principles for API design.
Implement proper error handling and logging throughout the application.
Use environment variables for configuration management.
Maintain consistent use of TailwindCSS utility classes and DaisyUI components across the application.

Version Control

Maintain an up-to-date .gitignore file to exclude unnecessary files from version control.

.gitignore Configuration

Exclude node_modules directory to avoid committing dependencies.
Ignore .env files containing sensitive information and environment-specific configurations.
Exclude build artifacts and compiled files (e.g., dist/, build/).
Ignore log files and other runtime-generated files.
Exclude IDE and editor-specific files (e.g., .vscode/, .idea/).
Ignore SQLite database files to prevent committing local data.
Exclude any files containing sensitive information or API keys.

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