[flake8-unused-arguments] Mark **kwargs in TypeVar as used (ARG001)

crates/ruff_linter/resources/test/fixtures/flake8_unused_arguments/ARG.py

@@ -1,5 +1,5 @@
 from abc import abstractmethod
-from typing import overload, cast
+from typing import overload, cast, TypeVar
 from typing_extensions import override
 
 
@@ -256,3 +256,15 @@ def f(self, x, y):
         """Docstring."""
         msg = t"{x}..."
         raise NotImplementedError(msg)
+
+
+###
+# Unused arguments with `**kwargs`.
+###
+
+def f(
+    default: object = None,  # noqa: ARG001
+    **kwargs: object,
+) -> None:
+    TypeVar(**kwargs)
+

crates/ruff_linter/src/checkers/ast/mod.rs

@@ -1873,6 +1873,9 @@ impl<'a> Visitor<'a> for Checker<'a> {
                                 } else {
                                     self.visit_non_type_definition(value);
                                 }
+                            } else {
+                                // Ex: typing.TypeVar(**kwargs)
+                                self.visit_non_type_definition(value);
                             }
                         }
                     }