docs: add information about E2B

backend/server/src/index.ts

@@ -192,8 +192,6 @@ io.on("connection", async (socket) => {
 
     // todo: send diffs + debounce for efficiency
     socket.on("saveFile", async (fileId: string, body: string) => {
-      if (!fileId) return; // handles saving when no file is open
-
       try {
         if (Buffer.byteLength(body, "utf-8") > MAX_BODY_SIZE) {
           socket.emit(

frontend/app/(app)/code/[id]/page.tsx

@@ -63,6 +63,14 @@ const CodeEditor = dynamic(() => import("@/components/editor"), {
   loading: () => <Loading />,
 })
 
+function getReactDefinitionFile() {
+  const reactDefinitionFile = fs.readFileSync(
+    "node_modules/@types/react/index.d.ts",
+    "utf8"
+  )
+  return reactDefinitionFile
+}
+
 export default async function CodePage({ params }: { params: { id: string } }) {
   const user = await currentUser()
   const sandboxId = params.id
@@ -86,6 +94,8 @@ export default async function CodePage({ params }: { params: { id: string } }) {
     return notFound()
   }
 
+  const reactDefinitionFile = getReactDefinitionFile()
+
   return (
     <div className="overflow-hidden overscroll-none w-screen flex flex-col h-screen bg-background">
       <Room id={sandboxId}>
@@ -94,6 +104,7 @@ export default async function CodePage({ params }: { params: { id: string } }) {
           <CodeEditor
             userData={userData}
             sandboxData={sandboxData}
+            reactDefinitionFile={reactDefinitionFile}
           />
         </div>
       </Room>

frontend/components/editor/index.tsx

@@ -35,9 +35,11 @@ import { ImperativePanelHandle } from "react-resizable-panels"
 export default function CodeEditor({
   userData,
   sandboxData,
+  reactDefinitionFile,
 }: {
   userData: User
   sandboxData: Sandbox
+  reactDefinitionFile: string
 }) {
   const socketRef = useRef<Socket | null>(null);
 
@@ -103,16 +105,6 @@ export default function CodeEditor({
   const [provider, setProvider] = useState<TypedLiveblocksProvider>()
   const userInfo = useSelf((me) => me.info)
 
-  // Liveblocks providers map to prevent reinitializing providers
-  type ProviderData = {
-    provider: LiveblocksProvider<never, never, never, never>;
-    yDoc: Y.Doc;
-    yText: Y.Text;
-    binding?: MonacoBinding;
-    onSync: (isSynced: boolean) => void;
-  };
-  const providersMap = useRef(new Map<string, ProviderData>());
-
   // Refs for libraries / features
   const editorContainerRef = useRef<HTMLDivElement>(null)
   const monacoRef = useRef<typeof monaco | null>(null)
@@ -340,15 +332,10 @@ export default function CodeEditor({
 
     if (!editorRef || !tab || !model) return
 
-    let providerData: ProviderData;
+    const yDoc = new Y.Doc()
+    const yText = yDoc.getText(tab.id)
+    const yProvider: any = new LiveblocksProvider(room, yDoc)
 
-    // When a file is opened for the first time, create a new provider and store in providersMap.
-    if (!providersMap.current.has(tab.id)) {
-      const yDoc = new Y.Doc();
-      const yText = yDoc.getText(tab.id);
-      const yProvider = new LiveblocksProvider(room, yDoc);
-
-      // Inserts the file content into the editor once when the tab is changed.
     const onSync = (isSynced: boolean) => {
       if (isSynced) {
         const text = yText.toString()
@@ -366,51 +353,22 @@ export default function CodeEditor({
 
     yProvider.on("sync", onSync)
 
-      // Save the provider to the map.
+    setProvider(yProvider)
-      providerData = { provider: yProvider, yDoc, yText, onSync };
-      providersMap.current.set(tab.id, providerData);
-
-    } else {
-      // When a tab is opened that has been open before, reuse the existing provider.
-      providerData = providersMap.current.get(tab.id)!;
-    }
 
     const binding = new MonacoBinding(
-      providerData.yText,
+      yText,
       model,
       new Set([editorRef]),
-      providerData.provider.awareness as unknown as Awareness
+      yProvider.awareness as Awareness
-    );
+    )
-
-    providerData.binding = binding;
-  
-    setProvider(providerData.provider);
 
     return () => {
-      // Cleanup logic
+      yDoc.destroy()
-      if (binding) {
+      yProvider.destroy()
-        binding.destroy();
+      binding.destroy()
+      yProvider.off("sync", onSync)
     }
-      if (providerData.binding) {
+  }, [editorRef, room, activeFileContent])
-        providerData.binding = undefined;
-      }
-    };
-  }, [room, activeFileContent]);
-
-    // Added this effect to clean up when the component unmounts
-    useEffect(() => {
-      return () => {
-        // Clean up all providers when the component unmounts
-        providersMap.current.forEach((data) => {
-          if (data.binding) {
-            data.binding.destroy();
-          }
-          data.provider.disconnect();
-          data.yDoc.destroy();
-        });
-        providersMap.current.clear();
-      };
-    }, []);
 
   // Connection/disconnection effect
   useEffect(() => {