## Build & Development Commands
- Use `npm` or `yarn` for dependency management and script execution. - Ensure compatibility with modern JavaScript (ES6+). - Use environment variables (`.env`) for configuration instead of hardcoding values. - Follow module-based architecture and avoid unnecessary dependencies.

## Testing Guidelines
- Use Jest or Mocha for unit testing. - Maintain high test coverage with meaningful test cases. - Follow the Arrange-Act-Assert pattern in test cases. - Use mocks and stubs where necessary to isolate test behavior.

## Code Style & Guidelines 
- Follow **ESLint** with a recommended or project-specific configuration. - Use **Prettier** for consistent code formatting. - Prefer `const` and `let` over `var`. - Use meaningful variable and function names. - Keep functions pure and reusable where possible. - Write modular and maintainable code, avoiding large monolithic files.

## Documentation Guidelines 
- Use **JSDoc** for documenting functions, classes, and modules. - Clearly describe function parameters, return types, and expected behavior. - Maintain an up-to-date `README.md` with project setup, usage, and examples. - Document API endpoints using OpenAPI/Swagger if applicable.