refactor(nodes): only use node internals

example/src/index.tsx

@@ -9,6 +9,7 @@ import CustomNode from './CustomNode';
 import FloatingEdges from './FloatingEdges';
 import Layouting from './Layouting';
 import NestedNodes from './NestedNodes';
+import Hidden from './Hidden';
 
 import './index.css';
 
@@ -41,6 +42,10 @@ const routes = [
     path: '/nested-nodes',
     component: NestedNodes,
   },
+  {
+    path: '/hidden',
+    component: Hidden,
+  },
 ];
 
 const Header = withRouter(({ history, location }) => {