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Add Native TypeScript Support for JSX Transform

It would be great if React had native TypeScript support for the new JSX transform without requiring additional configuration. Currently, setting up the new JSX transform with TypeScript requires manual tsconfig changes and can be confusing for developers new to the ecosystem.

Improve Error Boundaries for Async Components

Current error boundaries don't handle promise rejections from Server Components well. When a server component fails, the error boundary often doesn't catch it properly, leading to white screens. We need better error handling mechanisms that work seamlessly with the new architecture.

Add Built-in Support for CSS Container Queries

With CSS container queries now widely supported by browsers, it would be amazing if React had built-in support for responsive components based on container size rather than viewport. This would make component-driven responsive design much more intuitive and powerful.

Memory Leak in useEffect with Cleanup Functions

I'm encountering memory leaks when using useEffect with cleanup functions in React 18. The cleanup doesn't seem to run properly in certain edge cases, particularly when components unmount during Suspense boundaries. This is causing accumulation of event listeners and timers. Anyone else seeing this?

React 19 useTransition Hook Performance Issues

I've been testing the new useTransition hook in React 19 and noticed significant performance degradation when handling large datasets. The transitions seem to block the UI longer than expected, especially with concurrent rendering enabled. Has anyone else experienced this? Looking for optimization strategies or potential workarounds.

How to Handle Authentication in Server Components?

I'm struggling to understand the best practices for handling user authentication in React Server Components. Should I pass auth state as props from a client component, or is there a better pattern? The documentation doesn't clearly explain how to access user session data on the server side.

Server Components Documentation Needs Examples

The React Server Components documentation is quite technical but lacks practical, real-world examples. It would be helpful to have more comprehensive examples showing common patterns like data fetching, error handling, and integration with client components. The current examples are too basic for production use cases.

React DevTools Extension Crashes with Large Component Trees

The React DevTools extension consistently crashes when inspecting applications with large component trees (1000+ components). This makes debugging production applications nearly impossible. The extension needs better performance optimization for complex applications.

Best Practices for State Management in Server Components?

What are the recommended patterns for managing state when using Server Components? Traditional state management libraries like Redux don't seem to fit well with the server/client boundary. Are there emerging patterns or should we stick to URL state and database queries?

Hydration Mismatch Errors Too Cryptic

Hydration mismatch errors in React 18 are extremely difficult to debug. The error messages don't provide enough context about where the mismatch occurred or what caused it. This makes fixing SSR issues very time-consuming. Better error messages with component traces would be invaluable.