import type { Request, Response, NextFunction } from 'express'; export function errorHandler(err: Error, _req: Request, res: Response, next: NextFunction) { console.error('[Error]', err.message); if (res.headersSent) return next(err); const status = (err as any).status ?? 500; res.status(status).json({ error: { message: err.message, type: err.name ?? 'server_error', }, }); }