chore: fix build warnings

apps/demo/next.config.js

@@ -45,11 +45,7 @@ module.exports = withMDX({
             // https://github.com/vercel/next.js/pull/7550#issuecomment-512861158
             // https://github.com/vercel/next.js/issues/12861
             exclude: [
-                /@next\/react-dev-overlay/,
-                /@next\/react-refresh-utils\/runtime.js$/,
-                /@next\/react-refresh-utils\/internal\/helpers.js$/,
-                /next\/dist\/build\/polyfills\/unfetch.js$/,
-                /next\/dist\/build\/polyfills\/unfetch.js$/,
+                /next/,
             ],
             use: ['source-map-loader'],
             enforce: 'pre',

apps/demo/src/components/connect.tsx

@@ -203,7 +203,6 @@ function _Connect(): JSX.Element | null {
     const disconnect = useCallback(async () => {
         try {
             await GlobalState.device!.close();
-            GlobalState.setDevice(undefined, undefined);
         } catch (e: any) {
             GlobalState.showErrorDialog(e);
         }

apps/demo/src/pages/shell.tsx

@@ -39,6 +39,10 @@ const state = makeAutoObservable({
 });
 
 autorun(() => {
+    if (!terminal) {
+        return;
+    }
+
     if (!GlobalState.device) {
         terminal.socket = undefined;
         return;

libraries/adb/src/adb.ts

@@ -267,6 +267,13 @@ export class Adb implements Closeable {
         return framebuffer(this);
     }
 
+    /**
+     * Close the ADB connection.
+     *
+     * Note that it won't close the streams from backends.
+     * The streams are both physically and logically intact,
+     * and can be reused.
+     */
     public async close(): Promise<void> {
         await this.dispatcher.close();
     }