title: Angular compiler and tsconfig.json
body: <p>I am running a simple Angular-CLI project. By adding <code>"compile": "ngc"</code> to my <code>package.json</code> , I can run</p>
  
  <pre><code>npm run compile
  </code></pre>
  
  <p>which invokes Angular compiler and creates some new files to my project like <code>home.component.ngfactory.js</code>. What I cannot understand is why <strong>ngc</strong> is using <code>tsconfig.json</code> (configuration for Typescript compiler) as to output its results. <strong><em>Is there any connection between Angular compiler and Typescript compiler?</em></strong></p>