title: Can I have angular library that emits Angular elements in single js file?
body: <p>I'm starting to get into the angular 6 bits, and am very interested in Angular Elements as well as the new library projects.  I have an upcoming project that will probably need both these new features. </p>
  
  <p>I have the need to create custom UI components that are reusable across web frameworks, but I'd also like to have first class support for using them in angular projects.  I've followed this <a href="https://medium.com/@tomsu/building-web-components-with-angular-elements-746cd2a38d5b" rel="noreferrer">tutorial</a> and have an angular6 app that registers custom elements, and concats the webpack bundles in a single file.  I can then use that single js file in a plain html page and everything works very well.</p>
  
  <p>The sticking point is it would be great to create these custom elements in a library project.  That way I can distribute my library on our internal npm registry, as well as build the js that contains all the custom elements and deploy it on a CDN.</p>
  
  <p>Is it possible to build Angular Elements in the new library projects?</p>