title: zone.js:680 Unhandled Promise rejection: chartModule is not a function
body: <p>I am trying to import a module which uses highcarts and want to render the components in the module in my cli app.</p>
  
  <p>But i am getting this error </p>
  
  <p>I am using </p>
  
  <pre><code>    "@types/highcharts": "^5.0.16",
  "angular": "^1.6.9",
  "angular-highcharts": "^5.2.8",
  "core-js": "~2.5.1",
  "highcharts": "^6.0.6",
  </code></pre>
  
  <p>Has anyone else faced this issue?</p>
  
  <pre><code>export class LineStatisticsComponent {
  </code></pre>
  
  <p>chart = new Chart({</p>
  
  <pre><code>title: {
      text: 'sample chart '
  },
  </code></pre>