It would be nice if strawberry.field(default_factory=) was supported for private fields.

Feature Request Type

• Core functionality
• Alteration (enhancement/optimization) of existing feature(s)
• New behavior

Description

Consider the following code:

@strawberry.type
class Widget:
    private_keys: strawberry.Private[list[int]] = strawberry.field(default_factory=list)

When used this results in the following error:

strawberry.exceptions.private_strawberry_field.PrivateStrawberryFieldError: Field private_keys on type Widget cannot be both private and a strawberry.field

Known work-arounds, you can use dataclasses.field or annotate the entire class as a dataclass like so:

@strawberry.type
class Widget:
    private_keys: strawberry.Private[list[int]] = dataclasses.field(default_factory=list)

@strawberry.type
@dataclasses.dataclass
class Widget:
    data: Optional[strawberry.scalars.JSON] = strawberry.field(default_factory=dict)

Given that we've seen similar issues for input types where the same work arounds apply, perhaps strawberry.field's default value/factory should mimic dataclasses implementation more.