1) npm install -g nativescript (if you don't have native-script globally)
2) tns/ns for testing the native-script already installed globally (ns = nativescript)
3) tns/ns preview for make an qr code of the App
** You can install an emulator on your pc by following https://docs.nativescript.org/start/ns-setup-win
** https://nativescript-vue.org/en/docs/getting-started/installation/ (Total Installation) ** https://nativescript-vue.org/en/docs/getting-started/quick-start/ (Quick start)