title: VUE CLI-3 Project not working on IE-11
body: <p>I have created an project in vuejs using vue-cli3. It working fine on chrome browser but in IE-11 version blank screen is shown with the following error in console as mentioned in this link: <a href="https://drive.google.com/file/d/1QaNwK1ekI2BwFsFyjvgbSsvwHBCmlcAD/view?usp=drivesdk" rel="noreferrer">https://drive.google.com/file/d/1QaNwK1ekI2BwFsFyjvgbSsvwHBCmlcAD/view?usp=drivesdk</a>
  On clicking console error that I have pointed in above screenshot, it opens a screen as display in given link <a href="https://drive.google.com/file/d/1_QXVjcw3cmqeC70LfNyLcr__rnXVIZIh/view?usp=drivesdk" rel="noreferrer">https://drive.google.com/file/d/1_QXVjcw3cmqeC70LfNyLcr__rnXVIZIh/view?usp=drivesdk</a> with the error in mini-toastr package: 
  Here is my babel.config.js file code:</p>
  
  <pre><code>module.exports = {
    presets: [
     ['@vue/app', {
        polyfills: [
          'es6.promise',
          'es6.symbol'
        ]
      }]
    ]
  }
  </code></pre>
  
  <p>and .browserslistrc file code :</p>
  
  <pre><code>&gt; 1%
  last 2 versions
  not ie &lt;= 8
  </code></pre>
  
  <p>I am not getting where I am doing a mistake. Is anything I am missing? If anyone need some more info please let me know. Thanks!</p>