Collaborative Editing with PartyKit

import "@blocknote/core/fonts/inter.css";import { useCreateBlockNote } from "@blocknote/react";import { BlockNoteView } from "@blocknote/mantine";import "@blocknote/mantine/style.css";import YPartyKitProvider from "y-partykit/provider";import * as Y from "yjs";// Sets up Yjs document and PartyKit Yjs provider.const doc = new Y.Doc();const provider = new YPartyKitProvider(  "blocknote-dev.yousefed.partykit.dev",  // Use a unique name as a "room" for your application.  "your-project-name",  doc,);export default function App() {  const editor = useCreateBlockNote({    collaboration: {      // The Yjs Provider responsible for transporting updates:      provider,      // Where to store BlockNote data in the Y.Doc:      fragment: doc.getXmlFragment("document-store"),      // Information (name and color) for this user:      user: {        name: "My Username",        color: "#ff0000",      },    },  });  // Renders the editor instance.  return <BlockNoteView editor={editor} />;}