Remove asgiref run-time dependency (#1183)

Author: wch

CHANGELOG.md

@@ -7,6 +7,15 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [UNRELEASED] - YYYY-MM-DD
 
+### Breaking Changes
+
+### New features
+
+### Bug fixes
+
+### Other changes
+
+* Closed #1178: Removed run-time dependency on asgiref. (#1183)
 
 ## [0.8.0] - 2024-03-04
 

shiny/_autoreload.py

@@ -8,17 +8,18 @@
 import secrets
 import threading
 import webbrowser
-from typing import Callable, Optional, cast
-
-import starlette.types
-from asgiref.typing import (
-    ASGI3Application,
-    ASGIReceiveCallable,
-    ASGISendCallable,
-    ASGISendEvent,
-    HTTPResponseStartEvent,
-    Scope,
-)
+from typing import TYPE_CHECKING, Callable, Optional, cast
+
+if TYPE_CHECKING:
+    import starlette.types
+    from asgiref.typing import (
+        ASGI3Application,
+        ASGIReceiveCallable,
+        ASGISendCallable,
+        ASGISendEvent,
+        HTTPResponseStartEvent,
+        Scope,
+    )
 
 from ._hostenv import get_proxy_url