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import type { Request, Response, NextFunction } from 'express'; import type { ErrorResponse } from '../types'; export class HttpException extends Error { statusCode: number; constructor(statusCode: number, message: string) { super(message); this.statusCode = statusCode; this.name = 'HttpException'; Object.setPrototypeOf(this, HttpException.prototype); // Ensure instanceof works correctly } } export const errorHandler = ( err: Error | HttpException, req: Request, res: Response, _next: NextFunction, ): void => { const statusCode = 'statusCode' in err ? err.statusCode : 500; const message = err.message || 'Internal Server Error'; const errorResponse: ErrorResponse = { statusCode, message, timestamp: new Date().toISOString(), path: req.path, }; // Using console.error for server errors is acceptable // eslint-disable-next-line no-console console.error(`[Error] ${errorResponse.timestamp} - ${statusCode}: ${message}`); res.status(statusCode).json(errorResponse); };