diff --git a/app/components/MainApp.tsx b/app/components/MainApp.tsx
index 970bf01..f6b5adb 100644
--- a/app/components/MainApp.tsx
+++ b/app/components/MainApp.tsx
@@ -1,15 +1,29 @@
 'use client';
 
+import dynamic from 'next/dynamic';
 import React, { useState, useEffect } from 'react';
 import { Box, VStack, Spinner, Center, useToast } from '@chakra-ui/react';
-import UserProfile from './UserProfile';
-import Shop from './Shop';
-import TransferBalance from './TransferBalance';
 import { auth, getProfile, getShopItems, purchaseItem, transferBalance } from '../utils/api';
 import { IUser } from '../../backend/models/User';
 import { IShopItem } from '../../backend/models/ShopItem';
 import { useTelegramWebApp } from '../hooks/useTelegramWebApp';
 
+// Динамический импорт компонентов для клиентской стороны
+const UserProfile = dynamic(() => import('./UserProfile'), {
+  loading: () => <Spinner />,
+  ssr: false
+});
+
+const Shop = dynamic(() => import('./Shop'), {
+  loading: () => <Spinner />,
+  ssr: false
+});
+
+const TransferBalance = dynamic(() => import('./TransferBalance'), {
+  loading: () => <Spinner />,
+  ssr: false
+});
+
 type SafeUser = Omit<IUser, keyof Document>;
 
 export default function MainApp() {
diff --git a/app/hooks/useTelegramWebApp.ts b/app/hooks/useTelegramWebApp.ts
index b237ecc..834ec45 100644
--- a/app/hooks/useTelegramWebApp.ts
+++ b/app/hooks/useTelegramWebApp.ts
@@ -2,73 +2,72 @@
 
 import { useEffect, useState } from 'react';
 import { isDemoMode, getDemoWebApp } from '../utils/demo';
+import type { WebApp } from '@twa-dev/types';
 
-export type WebApp = {
-  initData: string;
-  initDataUnsafe: {
-    query_id: string;
-    user: {
-      id: string;
-      first_name: string;
-      username?: string;
-      language_code: string;
-    };
-    auth_date: number;
-    hash: string;
-  };
-  platform: string;
-  colorScheme: string;
-  themeParams: {
-    bg_color: string;
-    text_color: string;
-    hint_color: string;
-    link_color: string;
-    button_color: string;
-    button_text_color: string;
-  };
-  isExpanded: boolean;
-  viewportHeight: number;
-  viewportStableHeight: number;
-  headerColor: string;
-  backgroundColor: string;
-  ready: () => void;
-  expand: () => void;
-  close: () => void;
-};
+type SafeWebApp = Partial<Pick<WebApp, 
+  | 'initData' 
+  | 'initDataUnsafe' 
+  | 'platform' 
+  | 'colorScheme'
+  | 'themeParams'
+  | 'isExpanded'
+  | 'viewportHeight'
+  | 'viewportStableHeight'
+  | 'headerColor'
+  | 'backgroundColor'
+  | 'isClosingConfirmationEnabled'
+  | 'BackButton'
+  | 'MainButton'
+  | 'ready'
+  | 'expand'
+  | 'close'
+>>;
 
 export function useTelegramWebApp() {
-  const [webApp, setWebApp] = useState<WebApp | null>(null);
+  const [webApp, setWebApp] = useState<SafeWebApp | null>(null);
   const [error, setError] = useState<string | null>(null);
   const [isInitialized, setIsInitialized] = useState(false);
 
   useEffect(() => {
+    let isMounted = true;
+
     const initWebApp = async () => {
       try {
         if (isDemoMode()) {
-          const demoWebApp = getDemoWebApp();
-          setWebApp(demoWebApp);
-          setIsInitialized(true);
+          if (isMounted) {
+            const demoWebApp = getDemoWebApp();
+            setWebApp(demoWebApp);
+            setIsInitialized(true);
+          }
           return;
         }
 
         if (typeof window !== 'undefined') {
           const WebAppModule = await import('@twa-dev/sdk');
-          if (WebAppModule.default) {
-            setWebApp(WebAppModule.default);
-            setIsInitialized(true);
-          } else {
-            throw new Error('WebApp не найден');
+          if (isMounted) {
+            if (WebAppModule.default) {
+              setWebApp(WebAppModule.default as SafeWebApp);
+              setIsInitialized(true);
+            } else {
+              throw new Error('WebApp не найден');
+            }
           }
         }
       } catch (err) {
         console.error('WebApp initialization error:', err);
-        setError('Ошибка инициализации Telegram Web App');
+        if (isMounted) {
+          setError('Ошибка инициализации Telegram Web App');
+        }
       }
     };
 
     if (!isInitialized) {
       initWebApp();
     }
+
+    return () => {
+      isMounted = false;
+    };
   }, [isInitialized]);
 
   return { webApp, error, isInitialized };
diff --git a/app/utils/demo.ts b/app/utils/demo.ts
index 65951bf..e438c64 100644
--- a/app/utils/demo.ts
+++ b/app/utils/demo.ts
@@ -1,28 +1,54 @@
 'use client';
 
+import type { WebApp, WebAppUser, WebAppInitData, Platforms } from '@twa-dev/types';
+
 // Демо данные для тестирования без Telegram
-const demoUser = {
-  id: 'demo_user_123',
+const demoUser: WebAppUser = {
+  id: 12345,
   first_name: 'Demo',
   username: 'demo_user',
-  language_code: 'ru'
+  language_code: 'ru',
+  is_premium: false
 };
 
-const demoInitData = {
+const demoInitData: WebAppInitData = {
   query_id: 'demo_query',
   user: demoUser,
   auth_date: Date.now(),
-  hash: 'demo_hash'
+  hash: 'demo_hash',
+  start_param: ''
 };
 
 export const isDemoMode = () => {
   return typeof window !== 'undefined' && new URLSearchParams(window.location.search).has('demo');
 };
 
-export const getDemoWebApp = () => ({
+// Создаем заглушки для методов WebApp
+const createNoopFunction = () => () => {};
+
+type SafeWebApp = Pick<WebApp, 
+  | 'initData' 
+  | 'initDataUnsafe' 
+  | 'platform' 
+  | 'colorScheme'
+  | 'themeParams'
+  | 'isExpanded'
+  | 'viewportHeight'
+  | 'viewportStableHeight'
+  | 'headerColor'
+  | 'backgroundColor'
+  | 'isClosingConfirmationEnabled'
+  | 'BackButton'
+  | 'MainButton'
+  | 'ready'
+  | 'expand'
+  | 'close'
+>;
+
+export const getDemoWebApp = (): SafeWebApp => ({
   initData: 'demo_mode',
   initDataUnsafe: demoInitData,
-  platform: 'demo',
+  platform: 'WEBVIEW' as Platforms,
   colorScheme: 'light',
   themeParams: {
     bg_color: '#ffffff',
@@ -30,7 +56,8 @@ export const getDemoWebApp = () => ({
     hint_color: '#999999',
     link_color: '#2481cc',
     button_color: '#2481cc',
-    button_text_color: '#ffffff'
+    button_text_color: '#ffffff',
+    secondary_bg_color: '#f0f0f0'
   },
   isExpanded: true,
   viewportHeight: typeof window !== 'undefined' ? window.innerHeight : 800,
@@ -40,7 +67,10 @@ export const getDemoWebApp = () => ({
   isClosingConfirmationEnabled: true,
   BackButton: {
     isVisible: false,
-    onClick: () => {},
+    onClick: createNoopFunction(),
+    offClick: createNoopFunction(),
+    show: createNoopFunction(),
+    hide: createNoopFunction()
   },
   MainButton: {
     text: '',
@@ -49,16 +79,18 @@ export const getDemoWebApp = () => ({
     isVisible: false,
     isProgressVisible: false,
     isActive: true,
-    setText: () => {},
-    onClick: () => {},
-    show: () => {},
-    hide: () => {},
-    enable: () => {},
-    disable: () => {},
-    showProgress: () => {},
-    hideProgress: () => {},
+    setText: createNoopFunction(),
+    onClick: createNoopFunction(),
+    offClick: createNoopFunction(),
+    show: createNoopFunction(),
+    hide: createNoopFunction(),
+    enable: createNoopFunction(),
+    disable: createNoopFunction(),
+    showProgress: createNoopFunction(),
+    hideProgress: createNoopFunction(),
+    setParams: createNoopFunction()
   },
-  ready: () => {},
-  expand: () => {},
-  close: () => {},
+  ready: createNoopFunction(),
+  expand: createNoopFunction(),
+  close: createNoopFunction(),
 }); 
\ No newline at end of file