refactoring: ♻️ Small changes

injection/__init__.pyi

@@ -136,6 +136,7 @@ class Module:
 
         With `threadsafe=True`, the injection logic is wrapped in a `threading.RLock`.
         """
+
     @overload
     def inject[T](
         self,

injection/_core/common/type.py

@@ -54,21 +54,21 @@ def get_return_hint[T](function: Callable[..., T]) -> InputType[T] | None:
 
 def get_yield_hint[T](
     function: Callable[..., Iterator[T]] | Callable[..., AsyncIterator[T]],
-) -> InputType[T] | None:
+) -> tuple[InputType[T]] | tuple[()]:
     return_type = get_return_hint(function)
 
-    if get_origin(return_type) not in {
+    if get_origin(return_type) in {
         AsyncGenerator,
         AsyncIterable,
         AsyncIterator,
         Generator,
         Iterable,
         Iterator,
     }:
-        return None
+        for arg in get_args(return_type):
+            return (arg,)
 
-    args = get_args(return_type)
-    return next(iter(args), None)
+    return ()
 
 
 def standardize_types(

injection/_core/module.py

@@ -337,12 +337,14 @@ def __keep_new_record[T](
         cls: InputType[T],
     ) -> bool:
         new_mode, existing_mode = new.mode, existing.mode
-        is_override = new_mode == Mode.OVERRIDE
 
-        if new_mode == existing_mode and not is_override:
+        if new_mode == Mode.OVERRIDE:
+            return True
+
+        elif new_mode == existing_mode:
             raise RuntimeError(f"An injectable already exists for the class `{cls}`.")
 
-        return is_override or new_mode.rank > existing_mode.rank
+        return new_mode.rank > existing_mode.rank
 
     @staticmethod
     def __standardize_inputs[T](
@@ -478,16 +480,16 @@ def decorator(
                 wrapper = contextmanager(wrapped)
 
             else:
+                hint = (wrapped,)  # type: ignore[assignment]
                 injectable_class = SimpleScopedInjectable
-                hint = wrapper = wrapped  # type: ignore[assignment]
+                wrapper = wrapped  # type: ignore[assignment]
 
-            hints = on if hint is None else (hint, on)
             self.injectable(
                 wrapper,
                 cls=partial(injectable_class, scope_name=scope_name),
                 ignore_type_hint=True,
                 inject=inject,
-                on=hints,
+                on=(*hint, on),
                 mode=mode,
             )
             return wrapped