Method _create_layout_update

src/py/reactpy/reactpy/core/layout.py:160–176

(
        self, old_state: _ModelState
    )

        return update_task.result()

    async def _create_layout_update(
        self, old_state: _ModelState
    ) -> LayoutUpdateMessage:
        new_state = _copy_component_model_state(old_state)
        component = new_state.life_cycle_state.component

        async with AsyncExitStack() as exit_stack:
            await self._render_component(exit_stack, old_state, new_state, component)

        if REACTPY_CHECK_VDOM_SPEC.current:
            validate_vdom_json(new_state.model.current)

        return {
            "type": "layout-update",
            "path": new_state.patch_path,
            "model": new_state.model.current,
        }

    async def _render_component(
        self,