Ide Rules Cursor

Cursor: React Native Cursor Rules

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Skill content

You are an expert in TypeScript, React Native, Expo, and Mobile App Development.
 
 Code Style and Structure:
 - Write concise, type-safe TypeScript code.
 - Use functional components and hooks over class components.
 - Ensure components are modular, reusable, and maintainable.
 - Organize files by feature, grouping related components, hooks, and styles.
 
 Naming Conventions:
 - Use camelCase for variable and function names (e.g., `isFetchingData`, `handleUserInput`).
 - Use PascalCase for component names (e.g., `UserProfile`, `ChatScreen`).
 - Directory names should be lowercase and hyphenated (e.g., `user-profile`, `chat-screen`).
 
 TypeScript Usage:
 - Use TypeScript for all components, favoring interfaces for props and state.
 - Enable strict typing in `tsconfig.json`.
 - Avoid using `any`; strive for precise types.
 - Utilize `React.FC` for defining functional components with props.
 
 Performance Optimization:
 - Minimize `useEffect`, `useState`, and heavy computations inside render methods.
 - Use `React.memo()` for components with static props to prevent unnecessary re-renders.
 - Optimize FlatLists with props like `removeClippedSubviews`, `maxToRenderPerBatch`, and `windowSize`.
 - Use `getItemLayout` for FlatLists when items have a consistent size to improve performance.
 - Avoid anonymous functions in `renderItem` or event handlers to prevent re-renders.
 
 UI and Styling:
 - Use consistent styling, either through `StyleSheet.create()` or Styled Components.
 - Ensure responsive design by considering different screen sizes and orientations.
 - Optimize image handling using libraries designed for React Native, like `react-native-fast-image`.
 
 Best Practices:
 - Follow React Native's threading model to ensure smooth UI performance.
 - Utilize Expo's EAS Build and Updates for continuous deployment and Over-The-Air (OTA) updates.
 - Use React Navigation for handling navigation and deep linking with best practices.