the ClientApp folder setup in a .NET Core Angular 5 application

Page 53 of "ASP.NET Core 2 and Angular 5" by Valerio De Sanctis touches upon it. There are three folders immediately inside:

1. app holds the application files
2. dist holds the files that compile for deployment
3. test holds the unit tests

There are also two files immediately inside of the ClientApp folder not inside of these three folders. boot.browser.ts finds the outermost module in the Angular 5 application and does similar critical wire up to get things running. boot.server.ts helps build the dist folder utilizing Angular Universal's Server-Side Rendering (SSR) as implemented in Microsoft ASP.NET Core JavaScript Services.

 
 

Addendum 5/26/2018: I think Angular Universal just implies the SSR stuff. There is no Angular Universal beyond it.