MCP Node.js TypeScript API

import { Request, Response, NextFunction } from 'express'; export const errorHandler = ( err: Error, req: Request, res: Response, next: NextFunction ): void => { console.error('Error:', err); const statusCode = res.statusCode !== 200 ? res.statusCode : 500; res.status(statusCode).json({ message: err.message || 'Internal Server Error', stack: process.env.NODE_ENV === 'development' ? err.stack : undefined, }); }; export const notFound = (req: Request, res: Response, next: NextFunction): void => { const error = new Error(`Not Found - ${req.originalUrl}`); res.status(404); next(error); };