Created a new Expo app

navigation/BottomTabNavigator.tsx

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+import { Ionicons } from '@expo/vector-icons';
+import { createBottomTabNavigator } from '@react-navigation/bottom-tabs';
+import { createStackNavigator } from '@react-navigation/stack';
+import * as React from 'react';
+
+import Colors from '../constants/Colors';
+import useColorScheme from '../hooks/useColorScheme';
+import TabOneScreen from '../screens/TabOneScreen';
+import TabTwoScreen from '../screens/TabTwoScreen';
+import { BottomTabParamList, TabOneParamList, TabTwoParamList } from '../types';
+
+const BottomTab = createBottomTabNavigator<BottomTabParamList>();
+
+export default function BottomTabNavigator() {
+  const colorScheme = useColorScheme();
+
+  return (
+    <BottomTab.Navigator
+      initialRouteName="TabOne"
+      tabBarOptions={{ activeTintColor: Colors[colorScheme].tint }}>
+      <BottomTab.Screen
+        name="TabOne"
+        component={TabOneNavigator}
+        options={{
+          tabBarIcon: ({ color }) => <TabBarIcon name="ios-code" color={color} />,
+        }}
+      />
+      <BottomTab.Screen
+        name="TabTwo"
+        component={TabTwoNavigator}
+        options={{
+          tabBarIcon: ({ color }) => <TabBarIcon name="ios-code" color={color} />,
+        }}
+      />
+    </BottomTab.Navigator>
+  );
+}
+
+// You can explore the built-in icon families and icons on the web at:
+// https://icons.expo.fyi/
+function TabBarIcon(props: { name: React.ComponentProps<typeof Ionicons>['name']; color: string }) {
+  return <Ionicons size={30} style={{ marginBottom: -3 }} {...props} />;
+}
+
+// Each tab has its own navigation stack, you can read more about this pattern here:
+// https://reactnavigation.org/docs/tab-based-navigation#a-stack-navigator-for-each-tab
+const TabOneStack = createStackNavigator<TabOneParamList>();
+
+function TabOneNavigator() {
+  return (
+    <TabOneStack.Navigator>
+      <TabOneStack.Screen
+        name="TabOneScreen"
+        component={TabOneScreen}
+        options={{ headerTitle: 'Tab One Title' }}
+      />
+    </TabOneStack.Navigator>
+  );
+}
+
+const TabTwoStack = createStackNavigator<TabTwoParamList>();
+
+function TabTwoNavigator() {
+  return (
+    <TabTwoStack.Navigator>
+      <TabTwoStack.Screen
+        name="TabTwoScreen"
+        component={TabTwoScreen}
+        options={{ headerTitle: 'Tab Two Title' }}
+      />
+    </TabTwoStack.Navigator>
+  );
+}

navigation/LinkingConfiguration.ts

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+import * as Linking from 'expo-linking';
+
+export default {
+  prefixes: [Linking.makeUrl('/')],
+  config: {
+    screens: {
+      Root: {
+        screens: {
+          TabOne: {
+            screens: {
+              TabOneScreen: 'one',
+            },
+          },
+          TabTwo: {
+            screens: {
+              TabTwoScreen: 'two',
+            },
+          },
+        },
+      },
+      NotFound: '*',
+    },
+  },
+};

navigation/index.tsx

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+import { NavigationContainer, DefaultTheme, DarkTheme } from '@react-navigation/native';
+import { createStackNavigator } from '@react-navigation/stack';
+import * as React from 'react';
+import { ColorSchemeName } from 'react-native';
+
+import NotFoundScreen from '../screens/NotFoundScreen';
+import { RootStackParamList } from '../types';
+import BottomTabNavigator from './BottomTabNavigator';
+import LinkingConfiguration from './LinkingConfiguration';
+
+// If you are not familiar with React Navigation, we recommend going through the
+// "Fundamentals" guide: https://reactnavigation.org/docs/getting-started
+export default function Navigation({ colorScheme }: { colorScheme: ColorSchemeName }) {
+  return (
+    <NavigationContainer
+      linking={LinkingConfiguration}
+      theme={colorScheme === 'dark' ? DarkTheme : DefaultTheme}>
+      <RootNavigator />
+    </NavigationContainer>
+  );
+}
+
+// A root stack navigator is often used for displaying modals on top of all other content
+// Read more here: https://reactnavigation.org/docs/modal
+const Stack = createStackNavigator<RootStackParamList>();
+
+function RootNavigator() {
+  return (
+    <Stack.Navigator screenOptions={{ headerShown: false }}>
+      <Stack.Screen name="Root" component={BottomTabNavigator} />
+      <Stack.Screen name="NotFound" component={NotFoundScreen} options={{ title: 'Oops!' }} />
+    </Stack.Navigator>
+  );
+}