title: IDE code completion in Angular custom library generated by ng-packagr
body: <p>I have a library generated in Angular for use in other projects. I generated it with ng-packagr.</p>
  
  <p>When I use a component from that library to a consumer project, it does not show all the IDE goodies like code completion etc.</p>
  
  <p>For e.g. a component <code>app-my-input</code> has an Input() attribute <code>title</code>, now the usage would be:</p>
  
  <pre><code>&lt;app-my-input [title]="'my title here'"&gt;&lt;/app-my-input&gt;
  </code></pre>
  
  <p>Now when I usually use a third party component like this in an IDE like WebStorm/PhpStorm, and I just type <code>inp</code> after <code>&lt;app-my-input</code>, I get a suggestion <code>[input]</code> automatically, but for my library I am not getting this suggestion.</p>
  
  <p>My <code>public_api.ts</code> file has all the component's .ts files and module's .ts files exported. Is there something else I need to export to get the code completion working?</p>