Fix typing of jinja decorators (#4109)

Author: ajayd-san

CHANGES.rst

@@ -8,6 +8,8 @@ Unreleased
 -   Fix type annotation for ``teardown_request``. :issue:`4093`
 -   Fix type annotation for ``before_request`` and ``before_app_request``
     decorators. :issue:`4104`
+-   Fixed the issue where typing requires template global
+    decorators to accept functions with no arguments. :issue:`4098`
 
 
 Version 2.0.1

src/flask/typing.py

@@ -40,8 +40,8 @@
 ErrorHandlerCallable = t.Callable[[Exception], ResponseReturnValue]
 TeardownCallable = t.Callable[[t.Optional[BaseException]], None]
 TemplateContextProcessorCallable = t.Callable[[], t.Dict[str, t.Any]]
-TemplateFilterCallable = t.Callable[[t.Any], str]
-TemplateGlobalCallable = t.Callable[[], t.Any]
-TemplateTestCallable = t.Callable[[t.Any], bool]
+TemplateFilterCallable = t.Callable[..., t.Any]
+TemplateGlobalCallable = t.Callable[..., t.Any]
+TemplateTestCallable = t.Callable[..., bool]
 URLDefaultCallable = t.Callable[[str, dict], None]
 URLValuePreprocessorCallable = t.Callable[[t.Optional[str], t.Optional[dict]], None]