title: Unexpected token on "export default const"
body: <p>I have two different reat-native projects with exactly the same version of libraries.</p>
  
  <p>But the newest one failes on "export default const", the other one not.</p>
  
  <p>What is the difference between both calls?</p>
  
  <p>The first one compiles correctly and is already in the app stores with the following code:</p>
  
  <pre><code>export default const result = [...]
  </code></pre>
  
  <p>The second one has the same package.json and failes on the same code "unexpected token (1:15) -> the position 15 is after the "default".</p>
  
  <p>This is the used package.json:</p>
  
  <pre><code>{
    "name": "rn_simpleorm",
    "version": "0.0.1",
    "private": true,
    "scripts": {
      "start": "react-native start"
    },
    "dependencies": {
      "react": "15.3.2",
      "react-native": "^0.32.0"
    },
    "jest": {
      "preset": "jest-react-native",
      "modulePathIgnorePatterns": [
        "node_modules/react-native/node_modules/"
      ]
    },
    "devDependencies": {
      "babel-jest": "^15.0.0",
      "babel-preset-react-native": "^1.9.0",
      "jest": "^15.1.1",
      "jest-react-native": "^15.0.0",
      "react-test-renderer": "^15.3.1"
    }
  
  }
  </code></pre>