title: React App heroku deployment failing in IE
body: <p>I have a jquery/react web application that only fails when I try to access the heroku production deployment on IE 11.  When built locally, the app runs fine on IE 11.  All other browsers function as expected in both local and production environment.</p>
  
  <p>The error I'm getting is 'SCRIPT1010: Expected identifier'.  It points to this line in my main.js, {var n=e&amp;&amp;e.__esModule?function(){return e.default}:function(){return e};</p>
  
  <p>I've attempted to add various polyfills to no effect.  The fact that this fails only in the production version and specifically on IE 11 confuses me. If you any insight or can even assist with some tips as to how to better debug in IE, it would be greatly appreciated as I'm accustomed to using just chrome developer tools.</p>
  
  <p>Thanks.</p>
  
  <p>Edit: here is the dependency portion of my package.json:</p>
  
  <pre><code>"dependencies": {
  "12factor-config": "^1.3.1",
  "axios": "^0.17.1",
  "babel-core": "^6.26.0",
  "babel-loader": "^7.1.2",
  "babel-plugin-lodash": "^3.3.2",
  "babel-plugin-transform-object-rest-spread": "^6.26.0",
  "babel-polyfill": "^6.26.0",
  "babel-preset-env": "^1.6.1",
  "babel-preset-es2015": "^6.24.1",
  "babel-preset-react": "^6.24.1",
  "body-parser": "^1.18.2",
  "consolidate": "^0.14.5",
  "express": "^4.15.3",
  "gsap": "^1.20.4",
  "handlebars": "^4.0.10",
  "hoek": "^5.0.3",
  "jquery": "^3.3.1",
  "jquery-ui": "^1.12.1",
  "lodash": "^4.17.5",
  "marked": "^0.3.17",
  "newrelic": "^4.2.0",
  "prop-types": "^15.6.0",
  "react": "^16.2.0",
  "react-dom": "^16.2.0",
  "react-hot-loader": "^3.1.3",
  "react-router": "^4.2.0",
  "react-router-dom": "^4.2.2",
  "webpack": "^3.10.0",
  "webpack-cli": "^3.0.8",
  "webpack-dev-server": "^2.11.0"
  },
  </code></pre>