First Install Angular CLI Use the starting guide of https://cli.angular.io/
npm install -g @angular/cli
Sadly visual studio does not yet allow to run npm install on a seperate folder, so start a command line in the folder spa, and run:
cd spa
npm i
Run ng build once to see if there is no errors in the folder spa
cd spa
ng build
if its all good you can start build + run the project and it should show the sample.