managarten/apps/reader/apps/mobile/app/_layout.tsx

// Polyfill for structuredClone (not available in React Native 0.79.5)
import '../global.css';

import { Stack, router } from 'expo-router';
import { useAuth } from '~/hooks/useAuth';
import { useEffect } from 'react';

if (typeof globalThis.structuredClone === 'undefined') {
  globalThis.structuredClone = (obj: any) => JSON.parse(JSON.stringify(obj));
}

export const unstable_settings = {
  initialRouteName: '(tabs)',
};

export default function RootLayout() {
  const { user, loading } = useAuth();

  useEffect(() => {
    if (!loading) {
      if (user) {
        router.replace('/(tabs)');
      } else {
        router.replace('/(auth)/login');
      }
    }
  }, [user, loading]);

  return (
    <Stack screenOptions={{ headerShown: false }}>
      <Stack.Screen name="(auth)" />
      <Stack.Screen name="(tabs)" />
    </Stack>
  );
}