Javascript
Javascript

Why do React Error Boundaries fail to catch errors in Server Components and how should developers handle RSC errors?

November 28, 2025

Error Boundaries only catch JavaScript errors during client-side rendering in class components, not Server Components which execute during SSR without React Fiber lifecycle. RSC errors crash the entire page requiring error.js files or try/catch in server functions. Client Boundaries wrap interactive components explicitly while server errors use fallback UIs.

Code Example:-

Code

// app/error.js - Catches RSC errors (server-side)
export default function Error({ error, reset }) {
  logError(error); // Server-side logging
  return (
    <div>
      <h2>Something went wrong!</h2>
      <button onClick={() => reset()}>Try again</button>
    </div>
  );
}
// Client Component with Error Boundary
'use client';
class ClientErrorBoundary extends React.Component {
  constructor(props) {
    super(props);
    this.state = { hasError: false, error: null };
  }
  
  static getDerivedStateFromError(error) {
    return { hasError: true, error };
  }
  
  render() {
    if (this.state.hasError) {
      return <ErrorFallback error={this.state.error} />;
    }
    return this.props.children;
  }
}

// Server Component (no Error Boundary support)
async function ServerData() {
  try {
    const data = await db.query('SELECT * FROM users');
    return <UserList users={data} />;
  } catch (error) {
    // Manual try/catch required
    return <ErrorMessage>Failed to load users</ErrorMessage>;
  }
}
      
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