refactor(packages): change package structure

packages/react/src/hooks/useNodesInitialized.ts

@@ -0,0 +1,31 @@
+import { internalsSymbol } from '@xyflow/system';
+
+import { useStore } from './useStore';
+import type { ReactFlowState } from '../types';
+
+export type UseNodesInitializedOptions = {
+  includeHiddenNodes?: boolean;
+};
+
+const selector = (options: UseNodesInitializedOptions) => (s: ReactFlowState) => {
+  if (s.nodeInternals.size === 0) {
+    return false;
+  }
+
+  return s
+    .getNodes()
+    .filter((n) => (options.includeHiddenNodes ? true : !n.hidden))
+    .every((n) => n[internalsSymbol]?.handleBounds !== undefined);
+};
+
+const defaultOptions = {
+  includeHiddenNodes: false,
+};
+
+function useNodesInitialized(options: UseNodesInitializedOptions = defaultOptions): boolean {
+  const initialized = useStore(selector(options));
+
+  return initialized;
+}
+
+export default useNodesInitialized;