title: Attempted import error: 'ApiGet' is not exported from './apiFetcher' when compile react-native to react-native-web
body: <p>I am building react native app and it run successfully on both Android and iOS. 
  I want to convert react-native app to web app. I try followed tutorial: <a href="https://medium.com/@jonnykalambay/your-first-hybrid-app-in-15-minutes-react-native-on-the-web-2cc2646051e" rel="nofollow noreferrer">https://medium.com/@jonnykalambay/your-first-hybrid-app-in-15-minutes-react-native-on-the-web-2cc2646051e</a> 
  as well as some source (<a href="https://react-native-training.github.io/react-native-elements/blog/2018/12/13/react-native-web.html" rel="nofollow noreferrer">https://react-native-training.github.io/react-native-elements/blog/2018/12/13/react-native-web.html</a>).
  But when I run on web, there is error: 
  Attempted import error: 'ApiGet' is not exported from './apiFetcher'.</p>
  
  <p>My code: </p>
  
  <pre><code>//apiGet.js
  function ApiGet(){
  //some code
  }
  
  module.exports = {ApiGet}
  
  //another file import
  import {ApiGet} from './apiGet.js';
  </code></pre>
  
  <ul>
  <li>I tried an example for testing with this syntax import, export. It run successfully.
  My code use both ES5 and ES6. When I run code in react-native, it's OK. I create a demo react-native-web using ES5, it's also OK. </li>
  <li>my package.json:</li>
  </ul>
  
  <pre><code>{
   "name": "App",
   "version": "0.0.1",
   "private": true,
   "scripts": {
     "start": "node node_modules/react-native/local-cli/cli.js start",
     "test": "jest",
     "lint": "eslint .;exit 0",
     "start-web": "react-scripts start",
     "build-web": "react-scripts build"
   },
   "jest": {
     "preset": "react-native",
     "setupFiles": [
       "./jest/setup.js"
     ],
     "collectCoverage": true,
     "unmockedModulePathPatterns": [
       "react"
     ]
   },
   "dependencies": {
     "async": "^2.5.0",
     "babel-loader": "^8.0.5",
     "babel-plugin-module-resolver": "^3.1.1",
     "babel-preset-react-app": "^6.1.0",
     "bugsnag-react-native": "^2.2.0",
     "he": "^1.1.1",
     "metro-react-native-babel-preset": "^0.51.0",
     "moment": "^2.18.1",
     "oauth-1.0a": "^2.1.0",
     "prop-types": "^15.5.10",
     "react": "16.0.0-alpha.12",
     "react-app-polyfill": "^0.1.3",
     "react-art": "^16.8.6",
     "react-dom": "^16.8.6",
     "react-native": "^0.59.6",
     "react-native-camera": "^0.13.0",
     "react-native-datepicker": "^1.4.7",
     "react-native-device-info": "^0.11.0",
     "react-native-drawer": "^2.3.0",
     "react-native-dropdown-menu": "^2.0.0",
     "react-native-fast-image": "^1.0.0",
     "react-native-fbsdk": "^0.6.1",
     "react-native-firebase": "1.1.2",
     "react-native-image-progress": "^1.0.1",
     "react-native-keyboard-aware-scroll-view": "^0.2.7",
     "react-native-modal-dropdown": "^0.4.2",
     "react-native-navbar": "^1.5.0",
     "react-native-progress": "^3.4.0",
     "react-native-push-notification": "^2.2.1",
     "react-native-qrcode": "^0.2.7",
     "react-native-root-toast": "^1.0.3",
     "react-native-router-flux": "^3.37.0",
     "react-native-scrollable-tab-view": "^0.8.0",
     "react-native-swiper": "^1.5.12",
     "react-native-vector-icons": "^4.0.0",
     "react-native-web": "^0.11.2",
     "react-native-webview-android": "^1.1.17",
     "react-navigation": "^1.0.0-beta.11",
     "react-redux": "^5.0.3",
     "react-router-dom": "^5.0.0",
     "react-router-native": "^5.0.0",
     "react-scripts": "^3.0.0",
     "redux": "^3.7.2",
     "redux-logger": "^2.6.1",
     "redux-persist": "^4.9.1",
     "redux-thunk": "^2.1.0",
     "smartech-react-native": "^1.1.1"
   },
   "devDependencies": {
     "babel-core": "^6.23.1",
     "babel-eslint": "^10.0.1",
     "babel-jest": "^24.7.1",
     "babel-polyfill": "^6.23.0",
     "babel-preset-react-native": "^1.9.0",
     "babel-preset-stage-1": "^6.24.1",
     "eslint": "^5.16.0",
     "eslint-plugin-react": "^6.8.0",
     "jest": "^24.7.1",
     "jest-react-native": "^18.0.0",
     "react-native-mock": "^0.3.1",
     "react-test-renderer": "^15.3.2",
     "redux-mock-store": "^1.2.1"
   },
   "browserslist": {
     "production": [
       "&gt;0.2%",
       "not dead",
       "not op_mini all"
     ],
     "development": [
       "last 1 chrome version",
       "last 1 firefox version",
       "last 1 safari version"
     ]
   }
  }
  
  </code></pre>
  
  <p>Please help me. Thanks for advance.</p>