PropsReadonlyNode<T extends SetupWidget<T>> class

A reactive node that tracks widget property changes.

This node allows reactive code (like useComputed or useEffect) to depend on widget properties. When the widget is updated with new properties, this node notifies all its subscribers to re-run.

The node's value is the current widget instance, so you can access any property of the widget reactively.

Example:

class UserCard extends SetupWidget<UserCard> {
  final String name;
  final int age;

  const UserCard({super.key, required this.name, required this.age});

  @override
  setup(context, props) {
    // React to name changes
    final displayName = useComputed(() => 'User: ${props.value.name}');

    return () => Text(displayName.value);
  }
}