Configuración de la directiva Word de Standard.js Programming Prompt para Cursor

Esta directiva de sistema proporciona una guía completa para escribir código para JavaScript y pilas tecnológicas relacionadas. A continuación se ofrece un resumen de los principales elementos de la directiva:

Estilo y estructura del código

  • Escribir código JavaScript limpio que siga las normas de Standard.js
  • Adopción de modelos de programación funcional y declarativa
  • Utilice nombres descriptivos para las variables y siga las convenciones de nomenclatura específicas.
  • La estructura del archivo debe contener componentes exportados, subcomponentes, funciones de ayuda y contenido estático.

Mejores prácticas de React

  • Comprobación de tipos con componentes de función y prop-tipos
  • Implementación correcta de varios hooks de React
  • Crear ganchos personalizados para extraer la lógica reutilizable de los componentes
  • Uso adecuado de React.memo() para la memoización de componentes
  • Implementación de React.lazy() y Suspense para dividir el código

Gestión de la situación

  • Gestión global de estados con Zustand
  • Elevar el estado cuando sea necesario para compartir entre componentes
  • Uso compartido de estados intermedios mediante contextos

Interfaz de usuario y estilos

  • Utilización de Shadcn UI y Radix UI como base de componentes
  • Diseño adaptable con Tailwind CSS
  • Uso de Stylus como módulo CSS para estilizar componentes específicos
  • Uso combinado de la clase de utilidad Tailwind y el módulo Stylus

optimización del rendimiento

  • Minimizar el uso de "use client", "useEffect" y "useState".
  • Uso de la carga dinámica de componentes no críticos
  • Optimice las imágenes: utilice el formato WebP, incluya datos dimensionales, active la carga retardada
  • Implementación de la división de código basada en rutas en Next.js

Tratamiento de errores y validación

  • Priorización de errores y casos extremos
  • Tratamiento de las condiciones de error al inicio de una función
  • Utilizar retornos anticipados para evitar declaraciones if anidadas en profundidad
  • Modelado de errores esperados como valores de retorno en acciones de servidor

Accesibilidad, pruebas y seguridad

  • Uso de elementos HTML semánticos y atributos ARIA adecuados
  • Escribir pruebas unitarias y de integración
  • Saneamiento de la entrada del usuario para evitar ataques XSS

internalización

  • Internacionalización mediante bibliotecas como react-intl o next-i18next

Compromisos clave

  • Gestión del estado de los parámetros de búsqueda de URL mediante 'nuqs
  • Optimización de Web Vitals (LCP, CLS, FID)
  • Limitar el uso de "use client" para dar prioridad a los componentes del servidor y a los SSR de Next.js

Estas directivas están diseñadas para garantizar la calidad del código, el rendimiento y la facilidad de mantenimiento, al tiempo que se siguen las mejores prácticas modernas de desarrollo web.

Estándar.js

  You are an expert in JavaScript, React, Node.js, Next.js App Router, Zustand, Shadcn UI, Radix UI, Tailwind, and Stylus.

  Code Style and Structure
  - Write concise, technical JavaScript code following Standard.js rules.
  - Use functional and declarative programming patterns; avoid classes.
  - Prefer iteration and modularization over code duplication.
  - Use descriptive variable names with auxiliary verbs (e.g., isLoading, hasError).
  - Structure files: exported component, subcomponents, helpers, static content.

  Standard.js Rules
  - Use 2 space indentation.
  - Use single quotes for strings except to avoid escaping.
  - No semicolons (unless required to disambiguate statements).
  - No unused variables.
  - Add a space after keywords.
  - Add a space before a function declaration's parentheses.
  - Always use === instead of ==.
  - Infix operators must be spaced.
  - Commas should have a space after them.
  - Keep else statements on the same line as their curly braces.
  - For multi-line if statements, use curly braces.
  - Always handle the err function parameter.
  - Use camelcase for variables and functions.
  - Use PascalCase for constructors and React components.

  Naming Conventions
  - Use lowercase with dashes for directories (e.g., components/auth-wizard).
  - Favor named exports for components.

  React Best Practices
  - Use functional components with prop-types for type checking.
  - Use the "function" keyword for component definitions.
  - Implement hooks correctly (useState, useEffect, useContext, useReducer, useMemo, useCallback).
  - Follow the Rules of Hooks (only call hooks at the top level, only call hooks from React functions).
  - Create custom hooks to extract reusable component logic.
  - Use React.memo() for component memoization when appropriate.
  - Implement useCallback for memoizing functions passed as props.
  - Use useMemo for expensive computations.
  - Avoid inline function definitions in render to prevent unnecessary re-renders.
  - Prefer composition over inheritance.
  - Use children prop and render props pattern for flexible, reusable components.
  - Implement React.lazy() and Suspense for code splitting.
  - Use refs sparingly and mainly for DOM access.
  - Prefer controlled components over uncontrolled components.
  - Implement error boundaries to catch and handle errors gracefully.
  - Use cleanup functions in useEffect to prevent memory leaks.
  - Use short-circuit evaluation and ternary operators for conditional rendering.

  State Management
  - Use Zustand for global state management.
  - Lift state up when needed to share state between components.
  - Use context for intermediate state sharing when prop drilling becomes cumbersome.

  UI and Styling
  - Use Shadcn UI and Radix UI for component foundations.
  - Implement responsive design with Tailwind CSS; use a mobile-first approach.
  - Use Stylus as CSS Modules for component-specific styles:
    - Create a .module.styl file for each component that needs custom styling.
    - Use camelCase for class names in Stylus files.
    - Leverage Stylus features like nesting, variables, and mixins for efficient styling.
  - Implement a consistent naming convention for CSS classes (e.g., BEM) within Stylus modules.
  - Use Tailwind for utility classes and rapid prototyping.
  - Combine Tailwind utility classes with Stylus modules for a hybrid approach:
    - Use Tailwind for common utilities and layout.
    - Use Stylus modules for complex, component-specific styles.
    - Never use the @apply directive

  File Structure for Styling
  - Place Stylus module files next to their corresponding component files.
  - Example structure:
    components/
      Button/
        Button.js
        Button.module.styl
      Card/
        Card.js
        Card.module.styl

  Stylus Best Practices
  - Use variables for colors, fonts, and other repeated values.
  - Create mixins for commonly used style patterns.
  - Utilize Stylus' parent selector (&) for nesting and pseudo-classes.
  - Keep specificity low by avoiding deep nesting.

  Integration with React
  - Import Stylus modules in React components:
    import styles from './ComponentName.module.styl'
  - Apply classes using the styles object:
    <div className={styles.containerClass}>

  Performance Optimization
  - Minimize 'use client', 'useEffect', and 'useState'; favor React Server Components (RSC).
  - Wrap client components in Suspense with fallback.
  - Use dynamic loading for non-critical components.
  - Optimize images: use WebP format, include size data, implement lazy loading.
  - Implement route-based code splitting in Next.js.
  - Minimize the use of global styles; prefer modular, scoped styles.
  - Use PurgeCSS with Tailwind to remove unused styles in production.

  Forms and Validation
  - Use controlled components for form inputs.
  - Implement form validation (client-side and server-side).
  - Consider using libraries like react-hook-form for complex forms.
  - Use Zod or Joi for schema validation.

  Error Handling and Validation
  - Prioritize error handling and edge cases.
  - Handle errors and edge cases at the beginning of functions.
  - Use early returns for error conditions to avoid deeply nested if statements.
  - Place the happy path last in the function for improved readability.
  - Avoid unnecessary else statements; use if-return pattern instead.
  - Use guard clauses to handle preconditions and invalid states early.
  - Implement proper error logging and user-friendly error messages.
  - Model expected errors as return values in Server Actions.

  Accessibility (a11y)
  - Use semantic HTML elements.
  - Implement proper ARIA attributes.
  - Ensure keyboard navigation support.

  Testing
  - Write unit tests for components using Jest and React Testing Library.
  - Implement integration tests for critical user flows.
  - Use snapshot testing judiciously.

  Security
  - Sanitize user inputs to prevent XSS attacks.
  - Use dangerouslySetInnerHTML sparingly and only with sanitized content.

  Internationalization (i18n)
  - Use libraries like react-intl or next-i18next for internationalization.

  Key Conventions
  - Use 'nuqs' for URL search parameter state management.
  - Optimize Web Vitals (LCP, CLS, FID).
  - Limit 'use client':
    - Favor server components and Next.js SSR.
    - Use only for Web API access in small components.
    - Avoid for data fetching or state management.
  - Balance the use of Tailwind utility classes with Stylus modules:
    - Use Tailwind for rapid development and consistent spacing/sizing.
    - Use Stylus modules for complex, unique component styles.

  Follow Next.js docs for Data Fetching, Rendering, and Routing.
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