type hint bug fix

Author: tobixen

src/icalendar_searcher/__init__.py

@@ -10,8 +10,11 @@
 
 if TYPE_CHECKING:
     from icalendar import Calendar
+    from icalendar import Component
     from caldav.calendarobjectresource import CalendarObjectResource
 
+types_factory = TypesFactory()
+
 
 @dataclass
 class Searcher:
@@ -106,7 +109,7 @@ class Searcher:
     end: datetime = None
     alarm_start: datetime = None
     alarm_end: datetime = None
-    comp_class: Union["CalendarObjectResource", "Calendar"] = None
+    comp_class: Union["CalendarObjectResource", "Component"] = None
     include_completed: bool = None
 
     expand: bool = False
@@ -146,7 +149,7 @@ def add_property_filter(
         if operator not in ("contains", "undef", "=="):
             raise NotImplementedError(f"The operator {operator} is not supported yet.")
         if operator != "undef":
-            self._property_filters[key] = TypesFactory.for_property(key)(value)
+            self._property_filters[key] = types_factory.for_property(key)(value)
         self._property_operator[key] = operator
 
     def add_sort_key(self, key: str, reversed: bool = None) -> None:
@@ -157,7 +160,10 @@ def add_sort_key(self, key: str, reversed: bool = None) -> None:
 
         Except for that, the sort key should be an icalendar property.
         """
-        assert key in TypesFactory.types_map or key in ("isnt_overdue", "hasnt_started")
+        assert key in types_factory.types_map or key in (
+            "isnt_overdue",
+            "hasnt_started",
+        )
         self._sort_keys.append((key, reversed))
 
     def check_component(