GPT

Error Handling

// src/utils/errors.ts export class AuthError extends Error { constructor( message: string, public code: string = 'UNAUTHORIZED', public status: number = 401 ) { super(message); this.name = 'AuthError'; } } expo

Prompt text

Original English text. Replace placeholders with your own details.

// src/utils/errors.ts
export class AuthError extends Error {
 constructor(
 message: string,
 public code: string = 'UNAUTHORIZED',
 public status: number = 401
 ) {
 super(message);
 this.name = 'AuthError';
 }
}

export function handleAuthError(error: unknown): AuthError {
 if (error instanceof AuthError) {
 return error;
 }
 
 if (error instanceof Error) {
 return new AuthError(error.message);
 }
 
 return new AuthError('An unknown error occurred');
}

// Usage in components
function UserProfile() {
 const { data, error } = useAuthQuery({
 queryKey: ['profile'],
 queryFn: async (token) => {
 try {
 const response = await fetch('/api/profile', {
 headers: { Authorization: `Bearer ${token}` }
 });
 
 if (!response.ok) {
 throw new AuthError('Failed to fetch profile', 'FETCH_ERROR', response.status);
 }
 
 return response.json();
 } catch (error) {
 throw handleAuthError(error);
 }
 },
 onError: (error) => {
 if (error instanceof AuthError) {
 // Handle specific error types
 switch (error.code) {
 case 'UNAUTHORIZED':
 // Redirect to sign in
 break;
 case 'FETCH_ERROR':
 // Show retry button
 break;
 default:
 // Show general error message
 }
 }
 }
 });
}

Source & attribution

Instructa AI Prompts · Instructa AI Prompts

Source-listed license: CC-BY-4.0. Prompt text is preserved; titles and previews may be shortened for display. Source examples are not NexGateHub test results.

View original source ↗ · Source credits & licenses

Explore more prompts →