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optimizing-react-performance-with-typescript

Optimizing React Performance with TypeScript:

  1. Type-Check During Development Only: Run the TypeScript type checker during development builds but skip it for production builds by using tools like Babel to transpile only. This reduces build time during deployment.

  2. Use Pure Components: Leverage React.PureComponent or React.memo for functional components when you know the output is not affected by new props or state, which can prevent unnecessary re-renders.

  3. Immutable Data Structures: Use immutable data structures to optimize component rendering. TypeScript can help enforce immutability with its readonly modifier.

  4. Type-Driven Development: Use TypeScript’s type system to drive your development process, reducing the runtime errors and ensuring components are used as intended.

  5. Optimize Render Props: If you’re using render props, make sure they are not creating new functions on each render. This can be enforced with TypeScript by typing your render props correctly.

  6. Profile Components with TypeScript Decorators: Create TypeScript decorators for performance monitoring functions, like React.Profiler, to wrap components and measure rendering performance.

  7. Avoid Inline Function Definition in JSX: Inline functions in JSX can cause components to re-render unnecessarily. TypeScript can help to enforce this rule by typing expected props.

  8. Code Splitting with Dynamic Imports: Use TypeScript’s support for dynamic import() statements to split code and reduce the size of the initial JavaScript payload.

  9. Leverage TypeScript Enums for Conditional Rendering: Use TypeScript enums instead of strings for conditional rendering. Enums can make the code more readable and prevent rendering errors.

  10. Optimize Context Consumers: Use the React.useContext hook for functional components and make sure TypeScript enforces the correct context type.

  11. TypeScript for Memoization: Use TypeScript generics to create typed memoization helpers that can prevent complex calculations from being rerun unnecessarily.

  12. Type-Safe Asynchronous Operations: When dealing with asynchronous operations like data fetching, use TypeScript to enforce type safety, reducing errors that could lead to performance issues.

  13. Lazy Loading Components: Use React.lazy for dynamic imports in conjunction with TypeScript to ensure type safety when loading components.

  14. Strict Mode Compliance: Develop with React Strict Mode enabled to detect potential problems, and use TypeScript to enforce component contract adherence.

  15. Use TypeScript with Linters: Integrate TypeScript with linters like ESLint to enforce best practices and catch common performance issues like missing React.useCallback or React.useMemo hooks.