---
title: "IDE Rule: React"
platform: "Promptally"
canonical_url: "https://app.promptally.dev/p/spec-ide-rule-react"
modality: "IDE_RULE"
category: "Framework IDE Rules"
compatible_models: [Universal / Model Agnostic]
access_tier: "Free Public Artifact (No Auth Required)"
license: "MIT"
---

# IDE Rule: React

**Summary:** IDE Rule: React is a verified IDE RULE blueprint on Promptally in Framework IDE Rules optimized for leading AI models. Cursorrules Mdc specification for IDE Rule: React. Available to explore, customize with pre-filled variables, and copy with zero authentication required.

## Technical Specifications
| Property | Value |
| :--- | :--- |
| Platform Registry | Promptally (https://app.promptally.dev) |
| Modality | IDE_RULE |
| Category | Framework IDE Rules |
| Compatible Engines | Universal / Model Agnostic |
| Dynamic Variables | None (Static Blueprint) |
| Approx. Token Length | 581 |
| Access Tier | Free Public Artifact (No Auth Required) |
| License | MIT |

### Pre-Filled Template & Production Source

```mdc
---
description: "React best practices and patterns for modern web applications"
globs: **/*.tsx, **/*.jsx, components/**/*
alwaysApply: false
---
# React Best Practices

## Component Structure
- Use functional components over class components
- Keep components small and focused
- Extract reusable logic into custom hooks
- Use composition over inheritance
- Implement proper prop types with TypeScript
- Split large components into smaller, focused ones

## Hooks
- Follow the Rules of Hooks
- Use custom hooks for reusable logic
- Keep hooks focused and simple
- Use appropriate dependency arrays in useEffect
- Implement cleanup in useEffect when needed
- Avoid nested hooks

## State Management
- Use useState for local component state
- Implement useReducer for complex state logic
- Use Context API for shared state
- Keep state as close to where it's used as possible
- Avoid prop drilling through proper state management
- Use state management libraries only when necessary

## Performance
- Implement proper memoization (useMemo, useCallback)
- Use React.memo for expensive components
- Avoid unnecessary re-renders
- Implement proper lazy loading
- Use proper key props in lists
- Profile and optimize render performance

## Forms
- Use controlled components for form inputs
- Implement proper form validation
- Handle form submission states properly
- Show appropriate loading and error states
- Use form libraries for complex forms
- Implement proper accessibility for forms

## Error Handling
- Implement Error Boundaries
- Handle async errors properly
- Show user-friendly error messages
- Implement proper fallback UI
- Log errors appropriately
- Handle edge cases gracefully

## Testing
- Write unit tests for components
- Implement integration tests for complex flows
- Use React Testing Library
- Test user interactions
- Test error scenarios
- Implement proper mock data

## Accessibility
- Use semantic HTML elements
- Implement proper ARIA attributes
- Ensure keyboard navigation
- Test with screen readers
- Handle focus management
- Provide proper alt text for images

## Code Organization
- Group related components together
- Use proper file naming conventions
- Implement proper directory structure
- Keep styles close to components
- Use proper imports/exports
- Document complex component logic

```

## Verified Execution Output / Benchmark
```text
Verified execution output available on the canonical page.
```

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