Add wildcard * support for custom prop typing

Author: T4rk1n

dash/development/_py_components_generation.py

@@ -250,7 +250,9 @@ def generate_class_file(
         custom_typing_module,
     )
 
-    custom_imp = get_custom_imports(custom_typing_module).get(typename)
+    custom_imp = get_custom_imports(custom_typing_module)
+    custom_imp = custom_imp.get(typename) or custom_imp.get("*")
+
     if custom_imp:
         imports += "\n".join(custom_imp)
         imports += "\n\n"

dash/development/_py_prop_typing.py

@@ -140,6 +140,11 @@ def generate_enum(type_info, *_):
     return f"Literal[{', '.join(values)}]"
 
 
+def _get_custom_prop(custom_props, component_name, prop_name):
+    customs = custom_props.get(component_name) or custom_props.get("*", {})
+    return customs.get(prop_name)
+
+
 def get_prop_typing(
     type_name: str,
     component_name: str,
@@ -153,7 +158,7 @@ def get_prop_typing(
         return "typing.Union[str, dict]"
 
     if custom_props:
-        special = custom_props.get(component_name, {}).get(prop_name)
+        special = _get_custom_prop(custom_props, component_name, prop_name)
         if special:
             return special(type_info, component_name, prop_name)