Detect dead enum cases

[janedbal]

No description provided.

[ruudk]

Just my 2 cents: I'm not sure this is a good idea. I once made a PHPStan rule to detect them. And most of the time, our enums are mapped to database state. Not every case is tested. So it will produce lots of errors. I couldn't find anything worth deleting.

[janedbal]

@ruudk Thx, I can imagine such problems, but you can always disable the analysis:

ignoreErrors:
   - identifier: shipmonk.deadEnumCase

And some codebases may benefit from this. Also, those mapped to database can be easily detected in custom usage provider (assuming Doctrine):

#[Column(type: Types::STRING, enumType: InvoiceStatus::class]
private InvoiceStatus $status;

[ruudk]

I just realized that we should indeed create a usage detector, great 😁