"sudden removal of @angular "as soon as i install ionic app scripts

#1

Ionic:

ionic (Ionic CLI) : 4.5.0 (/usr/local/lib/node_modules/ionic)
Ionic Framework : ionic-angular 3.9.2
@ionic/app-scripts : 3.2.1

Cordova:

cordova (Cordova CLI) : 8.1.2 (cordova-lib@8.1.1)
Cordova Platforms : android 7.1.0, browser 5.0.3
Cordova Plugins : cordova-plugin-ionic-keyboard 2.0.5, cordova-plugin-ionic-webview 1.1.1, (and 24 other plugins)

System:

NodeJS : v8.9.4 (/home/shubham/.nvm/versions/node/v8.9.4/bin/node)
npm : 5.6.0
OS : Linux 4.15