Add a type-casting annotation

[zackdotcomputer]

Adds an annotation @DtoCastType that can be used to override the type of a field in the generated entities.

[Brakebein]

Thanks for the PR! It seems to be a useful feature.

I checked out your branch, but the generated output is not as expected.

1. Everything between the parentheses are set as type

/// @DtoCastType(MyType, my-package)
attributes  Json
/// @DtoCastType(OtherType, other-package, default)
otherAttributes  Json?

import { MyType } from 'my-package';
import OtherType from 'other-package';

export class Product {
  attributes: MyType, my-package;
  otherAttributes: OtherType, other-package, default | null;
}

2. Two default imports from the same package raises error

/// @DtoCastType(MyType, my-package, default)
attributes  Json
/// @DtoCastType(MyType, my-package, default)
otherAttributes  Json?

Error: Can not merge import statements; both statements have set the 'default' preoperty

This could be bypassed by setting any following appearance just to @DtoCastType(MyType), but this is not very intuitive.

[zackdotcomputer]

Sorry @Brakebein for the insufficient QA. Fixed the bugs you reported and added some usage to your sample schema.prisma so I could validate myself that it was generating as-expected.

[Brakebein]

Can you please also test and fix the following cases with relative paths:

/// @DtoCastType(OtherType, ../types)
otherAttributes Json

/// @DtoCastType(OtherType, ../types, default)
otherAttributes Json

In my case, I get following output:

import { Prisma } from '@prisma/client';
import { MyType } from 'my-package';

export class Product {
  attributes: MyType, my-package;
  otherAttributes: Prisma.JsonValue;
}

I think it's beacuse the following RegEx doesn't contain any dots (and slashes):

const ANNOTATION_PARAMS_REGEX = /(?:\(([_A-Za-z0-9\-\, ]*)\))?/;

[zackdotcomputer]

@Brakebein Done! Added a proper unit test for this new and old behavior with isAnnotatedWith as well

[Brakebein]

Thanks! It looks okay now.

[zackdotcomputer]

Thank you @Brakebein - this package is a real help to us integrating Prisma into Nest at work and I'm happy to contribute back things we would find useful. Really appreciate you taking the time to both listen to the suggestions and help make my PRs better and more sound.