In our project, we want to introduce an "alias" for a string, which is called CodeInput. Creating a custom scalar as described in the docs yields a pyright error.
Describe the Bug
Creating a custom scalar
CodeInput = strawberry.scalar(
NewType("CodeInput", str),
serialize=lambda v: v,
parse_value=lambda v: v,
)and checking it via pyright <file> yields:
/home/tobias/repos/demo/backend/demo/graphql/types/codes.py
/home/tobias/repos/demobackend/demo/graphql/types/codes.py:53:13 - error: Type of "scalar" is partially unknown
Type of "scalar" is "Overload[(*, name: str | None = None, description: str | None = None, specified_by_url: str | None = None, serialize: (...) -> Unknown = identity, parse_value: ((...) -> Unknown) | None = None, parse_literal: ((...) -> Unknown) | None = None, directives: Iterable[object] = ()) -> ((_T@scalar) -> _T@scalar), (cls: _T@scalar, *, name: str | None = None, description: str | None = None, specified_by_url: str | None = None, serialize: (...) -> Unknown = identity, parse_value: ((...) -> Unknown) | None = None, parse_literal: ((...) -> Unknown) | None = None, directives: Iterable[object] = ()) -> _T@scalar]" (reportUnknownMemberType)
/home/tobias/repos/demo/backend/demo/graphql/types/codes.py:55:22 - error: Type of parameter "v" is unknown (reportUnknownLambdaType)
/home/tobias/repos/demo/backend/demo/graphql/types/codes.py:55:25 - error: Return type of lambda is unknown (reportUnknownLambdaType)
/home/tobias/repos/demo/backend/demo/graphql/types/codes.py:56:24 - error: Type of parameter "v" is unknown (reportUnknownLambdaType)
/home/tobias/repos/demo/backend/demo/graphql/types/codes.py:56:27 - error: Return type of lambda is unknown (reportUnknownLambdaType)
5 errors, 0 warnings, 0 informations System Information
- Strawberry version (if applicable): 0.235.1
Additional Context
strawberry-graphql / strawberry
A GraphQL library for Python that leverages type annotations 🍓
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