stable-diffusion.cpp-rest/webui/lib/error-handlers.ts

// Global error handlers to prevent freezing
if (typeof window !== 'undefined') {
  // Handle unhandled promise rejections
  window.addEventListener('unhandledrejection', (event) => {
    console.error('Unhandled promise rejection:', event.reason);
    
    // Prevent the error from causing the app to freeze
    event.preventDefault();
    
    // Optionally show a user-friendly notification
    if (event.reason instanceof Error && event.reason.message) {
      console.warn('Application error:', event.reason.message);
    }
  });

  // Handle uncaught errors
  window.addEventListener('error', (event) => {
    console.error('Uncaught error:', event.error);
    
    // Prevent the error from causing the app to freeze
    event.preventDefault();
  });

  // Handle resource loading errors
  window.addEventListener('error', (event) => {
    if (event.target !== window) {
      console.warn('Resource loading error:', event.target);
      event.preventDefault();
    }
  }, true);
}

// Export a utility function for manual error reporting
export function reportError(error: Error, context?: string) {
  console.error(`Application error${context ? ` in ${context}` : ''}:`, error);
  
  // In development, you might want to show more details
  if (process.env.NODE_ENV === 'development') {
    console.trace('Error stack trace');
  }
}

// Export a function to safely run async operations
export async function safeAsync<T>(
  operation: () => Promise<T>,
  fallback?: T,
  context?: string
): Promise<T | undefined> {
  try {
    return await operation();
  } catch (error) {
    reportError(error instanceof Error ? error : new Error(String(error)), context);
    return fallback;
  }
}

// Export a function to safely run sync operations
export function safeSync<T>(
  operation: () => T,
  fallback?: T,
  context?: string
): T | undefined {
  try {
    return operation();
  } catch (error) {
    reportError(error instanceof Error ? error : new Error(String(error)), context);
    return fallback;
  }
}