[zod-nestjs]: Implement Custom Exception Class for Zod Validation Failures

[JunyaIizuka]

I would like to propose the implementation of a dedicated custom exception class for exceptions thrown when Zod validation fails.

Currently, a generic BadRequestException is being thrown, which does not allow us to distinguish whether the failure was due to Zod validation or other causes.
Having a specific custom exception class for Zod validation errors would greatly enhance error handling and debugging processes.

[JunyaIizuka]

Just like this.
https://github.com/risen228/nestjs-zod?tab=readme-ov-file#validation-exceptions

[nicofishman]

How would it work on this module? The one referenced is deprecated

[philsp]

It would be nice to have a custom exception class with access to the original values and full parse result.

To detect validation errors in my interceptor, I currently set the errorHttpStatusCode to 418 in the ZodValidationPipe 🫖

[JunyaIizuka]

I'll try to fix this issue myself in January 2025. Maybe I have free time...