Overview
Centralized error handling for your Express app. Catches all unhandled errors.
Features
- Global error catching
- Environment-aware responses
- Error logging
- Custom error classes
Installation
npx hanma add error-middleware
Code
import { Request, Response, NextFunction } from "express";
export const errorHandler = (
err: Error,
_req: Request,
res: Response,
_next: NextFunction
) => {
console.error("[ERROR]", err.stack || err.message);
res.status(500).json({
success: false,
message:
process.env.NODE_ENV === "development"
? err.message
: "Internal Server Error",
});
};
export const notFoundHandler = (req: Request, res: Response) => {
res.status(404).json({
success: false,
message: "Resource not found",
path: req.originalUrl,
});
};Usage
import { errorHandler, AppError } from './middleware/error-middleware';
// Must be last middleware
app.use(errorHandler);
// Throw custom errors
throw new AppError('Not found', 404);Dependencies
No external dependencies required.
Frequently Asked Questions
How do I install Error Handler?
Run the following command:
npx hanma add error-middlewareHow do I use this snippet?
Copy the code and paste it into your project. The snippet will be saved to
middleware/error-middleware.ts.Can I customize this snippet?
Yes! All snippets are copy-paste code that you own. Feel free to modify them to fit your needs.
Does this work with other frameworks?
This snippet is designed for the specific framework. Check the other framework pages for equivalent implementations.