Upload files to ''

App.js

+
+import React from 'react'; 
+import WelcomeScreen from './app/screens/WelcomeScreen.js';
+
+export default function App() {
+  return <WelcomeScreen />;
+}
+
+

app.json

+{
+  "expo": {
+    "name": "GroceryPolice",
+    "slug": "GroceryPolice",
+    "version": "1.0.0",
+    "orientation": "portrait",
+    "icon": "./assets/icon.png",
+    "splash": {
+      "image": "./assets/splash.png",
+      "resizeMode": "contain",
+      "backgroundColor": "#ffffff"
+    },
+    "updates": {
+      "fallbackToCacheTimeout": 0
+    },
+    "assetBundlePatterns": [
+      "**/*"
+    ],
+    "ios": {
+      "supportsTablet": true
+    },
+    "android": {
+      "adaptiveIcon": {
+        "foregroundImage": "./assets/adaptive-icon.png",
+        "backgroundColor": "#FFFFFF"
+      }
+    },
+    "web": {
+      "favicon": "./assets/favicon.png"
+    },
+    "description": ""
+  }
+}

babel.config.js

+module.exports = function(api) {
+  api.cache(true);
+  return {
+    presets: ['babel-preset-expo'],
+  };
+};

package.json

+{
+  "main": "node_modules/expo/AppEntry.js",
+  "scripts": {
+    "start": "expo start",
+    "android": "expo start --android",
+    "ios": "expo start --ios",
+    "web": "expo start --web",
+    "eject": "expo eject"
+  },
+  "dependencies": {
+    "@react-native-community/masked-view": "0.1.10",
+    "expo": "~39.0.2",
+    "expo-status-bar": "~1.0.2",
+    "react": "16.13.1",
+    "react-dom": "16.13.1",
+    "react-native": "https://github.com/expo/react-native/archive/sdk-39.0.4.tar.gz",
+    "react-native-gesture-handler": "~1.7.0",
+    "react-native-reanimated": "~1.13.0",
+    "react-native-safe-area-context": "3.1.4",
+    "react-native-screens": "~2.10.1",
+    "react-native-web": "~0.13.12"
+  },
+  "devDependencies": {
+    "@babel/core": "~7.9.0"
+  },
+  "private": true
+}