refactor(nodes): use relative positions for children

src/hooks/useNodeLookup.ts

@@ -0,0 +1,12 @@
+import { useRef } from 'react';
+
+import { useStoreApi } from '../store';
+
+function useNodeLookup() {
+  const store = useStoreApi();
+  const nodeLookup = useRef(store.getState().nodeLookup);
+
+  return nodeLookup;
+}
+
+export default useNodeLookup;