fix(core): install nested extension plugins at runtime

examples/07-collaboration/15-yhub/.bnexample.json

@@ -0,0 +1,12 @@
+{
+  "playground": true,
+  "docs": true,
+  "author": "nickthesick",
+  "tags": ["Advanced", "Saving/Loading", "Collaboration"],
+  "dependencies": {
+    "@y/prosemirror": "^2.0.0-15",
+    "@y/protocols": "^1.0.6-rc.1",
+    "@y/websocket": "^4.0.0-3",
+    "@y/y": "^14.0.0-rc.26"
+  }
+}

examples/07-collaboration/15-yhub/README.md

@@ -0,0 +1,11 @@
+# Collaborative Editing with YHub
+
+This example uses [YHub](https://github.com/yjs/yhub) and Yjs v14 to sync a BlockNote document and share user cursors over WebSocket. It connects to a public demo server, so don't enter private information.
+
+**Try it out:** Open this page in another browser tab or window to edit the same document together.
+
+**Relevant Docs:**
+
+- [Editor Setup](/docs/getting-started/editor-setup)
+- [Collaboration](/docs/features/collaboration)
+- [YHub](https://github.com/yjs/yhub)

examples/07-collaboration/15-yhub/index.html

@@ -0,0 +1,17 @@
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <meta
+      name="viewport"
+      content="width=device-width, initial-scale=1.0, interactive-widget=resizes-content"
+    />
+    <title>Collaborative Editing with YHub</title>
+    <script>
+      <!-- AUTO-GENERATED FILE, DO NOT EDIT DIRECTLY -->
+    </script>
+  </head>
+  <body>
+    <div id="root"></div>
+    <script type="module" src="./main.tsx"></script>
+  </body>
+</html>

examples/07-collaboration/15-yhub/main.tsx

@@ -0,0 +1,11 @@
+// AUTO-GENERATED FILE, DO NOT EDIT DIRECTLY
+import React from "react";
+import { createRoot } from "react-dom/client";
+import App from "./src/App.jsx";
+
+const root = createRoot(document.getElementById("root")!);
+root.render(
+  <React.StrictMode>
+    <App />
+  </React.StrictMode>,
+);

examples/07-collaboration/15-yhub/package.json

@@ -0,0 +1,34 @@
+{
+  "name": "@blocknote/example-collaboration-yhub",
+  "description": "AUTO-GENERATED FILE, DO NOT EDIT DIRECTLY",
+  "type": "module",
+  "private": true,
+  "version": "0.12.4",
+  "scripts": {
+    "start": "vite",
+    "dev": "vite",
+    "build:prod": "tsc && vite build",
+    "preview": "vite preview"
+  },
+  "dependencies": {
+    "@blocknote/ariakit": "latest",
+    "@blocknote/core": "latest",
+    "@blocknote/mantine": "latest",
+    "@blocknote/react": "latest",
+    "@blocknote/shadcn": "latest",
+    "@mantine/core": "^9.0.2",
+    "@mantine/hooks": "^9.0.2",
+    "react": "^19.2.3",
+    "react-dom": "^19.2.3",
+    "@y/prosemirror": "^2.0.0-15",
+    "@y/protocols": "^1.0.6-rc.1",
+    "@y/websocket": "^4.0.0-3",
+    "@y/y": "^14.0.0-rc.26"
+  },
+  "devDependencies": {
+    "@types/react": "^19.2.3",
+    "@types/react-dom": "^19.2.3",
+    "@vitejs/plugin-react": "^6.0.1",
+    "vite": "^8.0.0"
+  }
+}

examples/07-collaboration/15-yhub/src/App.tsx

@@ -0,0 +1,36 @@
+import "@blocknote/core/fonts/inter.css";
+import { withCollaboration } from "@blocknote/core/y";
+import { BlockNoteView } from "@blocknote/mantine";
+import "@blocknote/mantine/style.css";
+import { useCreateBlockNote } from "@blocknote/react";
+import { WebsocketProvider } from "@y/websocket";
+import * as Y from "@y/y";
+
+const user = {
+  id: crypto.randomUUID(),
+  name: "My Username",
+  color: "#ff0000",
+};
+
+const doc = new Y.Doc();
+const provider = new WebsocketProvider(
+  "wss://yhub.teleportal.tools/api/ws/v1",
+  // YHub rooms use "organization/document". Use your own names in production.
+  "blocknote/blocknote-yhub-example",
+  doc,
+  { params: { userid: user.id } },
+);
+
+export default function App() {
+  const editor = useCreateBlockNote(
+    withCollaboration({
+      collaboration: {
+        provider,
+        fragment: doc.get("bn"),
+        user,
+      },
+    }),
+  );
+
+  return <BlockNoteView editor={editor} />;
+}

examples/07-collaboration/15-yhub/tsconfig.json

@@ -0,0 +1,32 @@
+{
+  "__comment": "AUTO-GENERATED FILE, DO NOT EDIT DIRECTLY",
+  "compilerOptions": {
+    "target": "ESNext",
+    "useDefineForClassFields": true,
+    "lib": ["DOM", "DOM.Iterable", "ESNext"],
+    "allowJs": false,
+    "skipLibCheck": true,
+    "allowSyntheticDefaultImports": true,
+    "strict": true,
+    "forceConsistentCasingInFileNames": true,
+    "module": "ESNext",
+    "moduleResolution": "bundler",
+    "resolveJsonModule": true,
+    "isolatedModules": true,
+    "noEmit": true,
+    "jsx": "react-jsx",
+    "composite": true,
+    "paths": {
+      "@shared/*": ["../../../shared/*"]
+    }
+  },
+  "include": ["."],
+  "__ADD_FOR_LOCAL_DEV_references": [
+    {
+      "path": "../../../packages/core/"
+    },
+    {
+      "path": "../../../packages/react/"
+    }
+  ]
+}

examples/07-collaboration/15-yhub/vite-env.d.ts

@@ -0,0 +1 @@
+/// <reference types="vite/client" />

examples/07-collaboration/15-yhub/vite.config.ts

@@ -0,0 +1,35 @@
+// AUTO-GENERATED FILE, DO NOT EDIT DIRECTLY
+import react from "@vitejs/plugin-react";
+import * as fs from "fs";
+import * as path from "path";
+import { defineConfig } from "vite";
+// https://vitejs.dev/config/
+export default defineConfig(((conf: { command: string }) => ({
+  plugins: [react()],
+  optimizeDeps: {},
+  build: {
+    sourcemap: true,
+  },
+  resolve: {
+    alias:
+      conf.command === "build" ||
+      !fs.existsSync(path.resolve(__dirname, "../../../packages/core/src"))
+        ? {}
+        : ({
+            // The repo-wide alias for the shared test-utils directory (private,
+            // so it only resolves inside the monorepo). Harmless for examples
+            // that don't use it.
+            "@shared": path.resolve(__dirname, "../../../shared/"),
+            // Comment out the lines below to load a built version of blocknote
+            // or, keep as is to load live from sources with live reload working
+            "@blocknote/core": path.resolve(
+              __dirname,
+              "../../../packages/core/src/",
+            ),
+            "@blocknote/react": path.resolve(
+              __dirname,
+              "../../../packages/react/src/",
+            ),
+          } as any),
+  },
+})) as Parameters<typeof defineConfig>[0]);

packages/ariakit/src/style.css

@@ -452,18 +452,16 @@
 
 .bn-ariakit .bn-snapshot-date,
 .bn-ariakit .bn-snapshot-original-date,
-.bn-ariakit .bn-snapshot-secondary-label {
+.bn-ariakit .bn-snapshot-users {
   font-size: 13px;
   line-height: 1.3;
 }
 
-.bn-ariakit .bn-snapshot-original-date,
-.bn-ariakit .bn-snapshot-secondary-label {
+.bn-ariakit .bn-snapshot-original-date {
   color: hsl(204 4% 40%);
 }
 
-.bn-ariakit .bn-snapshot-original-date:where(.dark, .dark *),
-.bn-ariakit .bn-snapshot-secondary-label:where(.dark, .dark *) {
+.bn-ariakit .bn-snapshot-original-date:where(.dark, .dark *) {
   color: hsl(204 8% 70%);
 }
 
@@ -475,6 +473,34 @@
   transition: opacity 0.12s ease;
 }
 
+.bn-ariakit .bn-snapshot-users {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 4px;
+  overflow: visible;
+  white-space: normal;
+}
+
+.bn-ariakit .bn-snapshot-user {
+  display: inline-flex;
+  flex: none;
+  align-items: center;
+  gap: 4px;
+  white-space: nowrap;
+}
+
+.bn-ariakit .bn-snapshot-user-color {
+  background-color: currentColor;
+  border-radius: 50%;
+  flex: none;
+  height: 8px;
+  width: 8px;
+}
+
+.bn-ariakit .bn-snapshot-user-color:where(.dark, .dark *) {
+  background-color: var(--bn-user-color-light);
+}
+
 .bn-ariakit .bn-snapshot:hover .bn-snapshot-menu,
 .bn-ariakit .bn-snapshot:focus-visible .bn-snapshot-menu,
 .bn-ariakit .bn-snapshot:focus-within .bn-snapshot-menu {
@@ -512,7 +538,6 @@
 
 .bn-ariakit .bn-snapshot.selected .bn-snapshot-date,
 .bn-ariakit .bn-snapshot.selected .bn-snapshot-original-date,
-.bn-ariakit .bn-snapshot.selected .bn-snapshot-secondary-label,
 .bn-ariakit .bn-snapshot.selected .bn-snapshot-menu-trigger {
   color: rgb(255 255 255 / 0.9);
 }

packages/ariakit/src/versioning/Versioning.tsx

@@ -82,7 +82,7 @@ export const Snapshot = forwardRef<
     name,
     date,
     restoredFrom,
-    secondaryLabel,
+    users,
     comparingLabel,
     comparingIcon,
     ...rest
@@ -131,9 +131,28 @@ export const Snapshot = forwardRef<
         {restoredFrom && (
           <div className="bn-snapshot-original-date">{restoredFrom}</div>
         )}
-        {secondaryLabel && (
-          <div className="bn-snapshot-secondary-label">{secondaryLabel}</div>
-        )}
+        {users?.length ? (
+          <div className="bn-snapshot-users">
+            {users.map((user, index) => (
+              <span className="bn-snapshot-user" key={index}>
+                {index > 0 && <span aria-hidden="true">·</span>}
+                {typeof user !== "string" && user.color && (
+                  <span
+                    className="bn-snapshot-user-color"
+                    aria-hidden="true"
+                    style={{
+                      color: user.color,
+                      ...{
+                        "--bn-user-color-light": user.colorLight ?? user.color,
+                      },
+                    }}
+                  />
+                )}
+                <span>{typeof user === "string" ? user : user.username}</span>
+              </span>
+            ))}
+          </div>
+        ) : null}
       </div>
       {actions && (
         <div

packages/core/src/editor/managers/EventManager.ts

@@ -5,6 +5,7 @@ import {
 } from "../../api/getBlocksChangedByTransaction.js";
 import { Transaction } from "prosemirror-state";
 import { EventEmitter } from "../../util/EventEmitter.js";
+import type { VersioningController } from "../../extensions/Versioning/Versioning.js";
 import {
   BlockSchema,
   InlineContentSchema,
@@ -177,8 +178,13 @@ export class EventManager<
     includeUpdatesFromRemote = true,
   ): Unsubscribe {
     return this.on("onChange", ({ transaction, appendedTransactions }) => {
-      if (!includeUpdatesFromRemote && isRemoteTransaction(transaction)) {
-        // don't trigger the callback if the changes are caused by a remote user
+      if (
+        this.editor.getExtension<VersioningController>("versioning")
+          ?.isPreviewOpen ||
+        transaction.getMeta("blocknoteVersionPreview") ||
+        (!includeUpdatesFromRemote && isRemoteTransaction(transaction))
+      ) {
+        // Don't trigger the callback for previews or excluded remote changes.
         return;
       }
       callback(this.editor, {