Fix untyped decorator

RELEASE.md

@@ -0,0 +1,21 @@
+release type: patch
+
+This release fixes a long standing typing issue where mypy would
+return the following error:
+
+```text
+main:14: error: Untyped decorator makes function "e" untyped  [misc] (diff)
+```
+
+When using the following code:
+
+```python
+import strawberry
+
+
+@strawberry.type
+class Query:
+    @strawberry.field(description="Get the last user")
+    def last_user_v2(self) -> str:
+        return "Hello"
+```

strawberry/federation/field.py

@@ -118,7 +118,7 @@ def field(
     directives: Optional[Sequence[object]] = (),
     extensions: Optional[list[FieldExtension]] = None,
     graphql_type: Optional[Any] = None,
-) -> Any: ...
+) -> StrawberryField: ...
 
 
 @overload

strawberry/types/field.py

@@ -475,7 +475,7 @@ def field(
     directives: Optional[Sequence[object]] = (),
     extensions: Optional[list[FieldExtension]] = None,
     graphql_type: Optional[Any] = None,
-) -> Any: ...
+) -> StrawberryField: ...
 
 
 @overload
@@ -515,23 +515,23 @@ def field(
 
 
 def field(
-    resolver: Optional[_RESOLVER_TYPE[Any]] = None,
+    resolver=None,
     *,
-    name: Optional[str] = None,
-    is_subscription: bool = False,
-    description: Optional[str] = None,
-    permission_classes: Optional[list[type[BasePermission]]] = None,
-    deprecation_reason: Optional[str] = None,
-    default: Any = dataclasses.MISSING,
-    default_factory: Union[Callable[..., object], object] = dataclasses.MISSING,
-    metadata: Optional[Mapping[Any, Any]] = None,
-    directives: Optional[Sequence[object]] = (),
-    extensions: Optional[list[FieldExtension]] = None,
-    graphql_type: Optional[Any] = None,
+    name=None,
+    is_subscription=False,
+    description=None,
+    permission_classes=None,
+    deprecation_reason=None,
+    default=dataclasses.MISSING,
+    default_factory=dataclasses.MISSING,
+    metadata=None,
+    directives=(),
+    extensions=None,
+    graphql_type=None,
     # This init parameter is used by PyRight to determine whether this field
     # is added in the constructor or not. It is not used to change
     # any behavior at the moment.
-    init: Literal[True, False, None] = None,
+    init=None,
 ) -> Any:
     """Annotates a method or property as a GraphQL field.
 

tests/typecheckers/test_fields_with_arguments.py

@@ -0,0 +1,31 @@
+from inline_snapshot import snapshot
+
+from .utils.marks import requires_mypy, requires_pyright, skip_on_windows
+from .utils.typecheck import typecheck
+
+pytestmark = [skip_on_windows, requires_pyright, requires_mypy]
+
+
+CODE = """
+import strawberry
+
+
+@strawberry.type
+class Query:
+    @strawberry.field(description="Get the last user")
+    def last_user_v2(self) -> str:
+        return "Hello"
+
+@strawberry.federation.type
+class FederatedQuery:
+    @strawberry.federation.field(description="Get the last user")
+    def last_user_v2(self) -> str:
+        return "Hello"
+"""
+
+
+def test():
+    results = typecheck(CODE)
+
+    assert results.pyright == snapshot([])
+    assert results.mypy == snapshot([])

tests/typecheckers/utils/mypy.py

@@ -62,6 +62,10 @@
         )
         full_output = full_output.strip()
 
+        if not full_output:
+            assert process_result.returncode == 0
+            return []
+
         results: list[Result] = []
 
         try: