Implementing Robust Error Handling in Express/NestJS

Introduction

Unhandled exceptions in Node.js can crash your entire server. A robust error handling middleware is essential.

Strategy

1. Centralized Error Classes. 2. Global Exception Filters (NestJS) or Middleware (Express). 3. Graceful Shutdown on fatal errors.

Conclusion

Treat errors as part of the flow, not as an afterthought.