modern-errors-http

import ModernError from 'modern-errors'; import modernErrorsHttp from 'modern-errors-http'; // 1. Extend ModernError with the HTTP plugin export const BaseError = ModernError.subclass('BaseError', { plugins: [modernErrorsHttp], }); // 2. Define a custom error with HTTP-specific properties export const AuthError = BaseError.subclass('AuthError', { http: { type: 'https://example.com/probs/auth', status: 401, title: 'Authentication Failed' }, }); // 3. Create an instance of the custom error const error = new AuthError('Could not authenticate the provided credentials.', { http: { instance: '/users/62/login', extra: { userId: 62, attemptedUsername: 'testuser' }, }, }); // 4. Convert the error to an RFC 7807 compliant HTTP response object const httpResponseObject = BaseError.httpResponse(error); // In a real application, this 'httpResponseObject' would be sent as a JSON response body. console.log(JSON.stringify(httpResponseObject, null, 2)); /* Expected output (stack trace will vary): { "type": "https://example.com/probs/auth", "status": 401, "title": "Authentication Failed", "detail": "Could not authenticate the provided credentials.", "instance": "/users/62/login", "stack": "AuthError: Could not authenticate the provided credentials.\n at ...", "extra": { "userId": 62, "attemptedUsername": "testuser" } } */