Control how NestJS catches exceptions and turns them into consistent HTTP responses.
Exception filters let you control how errors are handled when an exception occurs during request processing. Instead of allowing every endpoint to format errors differently, a filter can provide a consistent response structure.
Filters can handle specific exception types or broader categories of errors. They are especially useful when you need custom error responses, centralized logging, or behavior that differs from NestJS's default exception handling.
What you'll walk away knowing