App-shell with Ionic 4?

So I read this article here:
Liked the concept and in pure Angular I managed to create “app-shell”.

Now I wanted to do it in Ionic 4.
Generated blank project. Tried to add app-shell etc following same commands and getting:

Schematic “app-shell” not found in collection “@ionic/angular-toolkit”.
Error: Schematic “app-shell” not found in collection “@ionic/angular-toolkit”.
at SchematicEngine.createSchematic (C:\Users\xxx\Desktop\Ionic4\newApp2\node_modules@angular-devkit\schematics\src\engine\engine.js:232:23)
at CollectionImpl.createSchematic (C:\Users\xxx\Desktop\Ionic4\newApp2\node_modules@angular-devkit\schematics\src\engine\engine.js:69:29)
at GenerateCommand.getSchematic (C:\Users\xxx\Desktop\Ionic4\newApp2\node_modules@angular\cli\models\schematic-command.js:130:27)
at GenerateCommand.initialize (C:\Users\xxx\Desktop\Ionic4\newApp2\node_modules@angular\cli\commands\generate-impl.js:25:36)
at process._tickCallback (internal/process/next_tick.js:188:7)
at Function.Module.runMain (module.js:695:11)
at startup (bootstrap_node.js:191:16)
at bootstrap_node.js:612:3

I thought now with Ionic 4 we can do pure Angular items and we can get app-shell etc concepts “for free”?

Hey! We created a tutorial that explains how to add skeleton screens (or app shell) to your Ionic app. Hope it helps!