(1) Rico Example .cursorrules Cursor AI Prompt Files

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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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