title: Create React Native App. - Plugin/Preset files are not allowed to export objects, only functions
body: <p>Need some help, I'm getting a weird error out of left field that I have not been able to debug. This project was bundling successfully until yesterday after I setup my react native project on another Mac.</p>
  
  <p>I'm wondering if it's from versioning of npm packages I had to reinstall. </p>
  
  <p>Any direction would be helpful, it's always the setup that's the hardest because you do it so infrequently...</p>
  
  <p>My babelrc file is as follows --</p>
  
  <pre><code>{
      "presets": ["babel-preset-expo"],
      "env": {
          "development": {
              "plugins": ["transform-react-jsx-source"]
          }
      }
  }
  </code></pre>
  
  <p>And my package.json</p>
  
  <pre><code>{
    "name": "hancho_frontend",
    "version": "0.1.0",
    "private": true,
    "devDependencies": {
      "jest-expo": "~27.0.0",
      "react-native-scripts": "^1.14.1",
      "react-test-renderer": "16.3.1"
    },
    "main": "./node_modules/react-native-scripts/build/bin/crna-entry.js",
    "scripts": {
      "start": "react-native-scripts start",
      "eject": "react-native-scripts eject",
      "android": "react-native-scripts android",
      "ios": "react-native-scripts ios",
      "test": "jest"
    },
    "jest": {
      "preset": "jest-expo"
    },
    "dependencies": {
      "@expo/vector-icons": "^6.2.0",
      "axios": "^0.18.0",
      "babel-core": "^6.26.3",
      "babel-loader": "^7.1.4",
      "babel-preset-es2015": "^6.24.1",
      "babel-preset-react": "^6.24.1",
      "babel-upgrade": "0.0.19",
      "color": "^2.0.0",
      "expo": "^27.1.0",
      "hoist-non-react-statics": "^2.3.0",
      "moment": "^2.22.2",
      "prop-types": "^15.6.2",
      "react": "^16.3.1",
      "react-dom": "^16.4.1",
      "react-fontawesome": "^1.6.1",
      "react-native": "^0.56.0",
      "react-native-dropdownalert": "^3.1.2",
      "react-native-extended-stylesheet": "^0.8.0",
      "react-navigation": "^2.6.1",
      "react-redux": "^5.0.7",
      "react-router-dom": "^4.3.1",
      "redux": "^4.0.0",
      "redux-axios-middleware": "^4.0.0",
      "redux-logger": "^3.0.6",
      "redux-thunk": "^2.3.0",
      "webpack": "^4.15.1"
    }
  }
  </code></pre>
  
  <p>I definitely have packages I am not using installed, but it has not caused a problem in the past. </p>
  
  <p>I've cleared cache, uninstalled and reinstalled node_modules. I also reverted to an earlier version of expo that I had working previously. Still no luck. </p>
  
  <p>Thanks in advance!</p>