removing needing to classify the function as async, instead I am looking at the function to determine

Author: BSd3v

dash/_callback.py

@@ -155,8 +155,6 @@ def callback(
             Function to call when the callback raises an exception. Receives the
             exception object as first argument. The callback_context can be used
             to access the original callback inputs, states and output.
-        :param use_async:
-            Tells the system to await for this async callback.
     """
 
     long_spec = None
@@ -207,7 +205,6 @@ def callback(
         manager=manager,
         running=running,
         on_error=on_error,
-        use_async=use_async
     )
 
 
@@ -328,7 +325,6 @@ def register_callback(
     manager = _kwargs.get("manager")
     running = _kwargs.get("running")
     on_error = _kwargs.get("on_error")
-    use_async = _kwargs.get("use_async")
     if running is not None:
         if not isinstance(running[0], (list, tuple)):
             running = [running]
@@ -811,7 +807,7 @@ def add_context(*args, **kwargs):
 
             return jsonResponse
 
-        if use_async:
+        if asyncio.iscoroutinefunction(func):
             callback_map[callback_id]["callback"] = async_add_context
         else:
             callback_map[callback_id]["callback"] = add_context

dash/dash.py

@@ -2356,8 +2356,7 @@ def router():
                     Output(_ID_CONTENT, "children"),
                     Output(_ID_STORE, "data"),
                     inputs=inputs,
-                    prevent_initial_call=True,
-                    use_async=True
+                    prevent_initial_call=True
                 )
                 async def update(pathname_, search_, **states):
                     """