MCP Chat Support System

import { Request, Response, NextFunction } from 'express'; export interface AppError extends Error { statusCode?: number; isOperational?: boolean; } export const errorHandler = ( error: AppError, req: Request, res: Response, next: NextFunction ) => { const statusCode = error.statusCode || 500; const message = error.message || 'Internal Server Error'; // Log error for debugging console.error('Error:', error); // Don't leak error details in production const isDevelopment = process.env.NODE_ENV === 'development'; res.status(statusCode).json({ error: message, ...(isDevelopment && { stack: error.stack }) }); };