I need to update my project from Angular 4 to Angular 5+ ,
I need to change all following dependencies to Angular 5+.
I also updated Angular CLI to 1.5.0.
If you want to simply upgrade your angular4 project to angular 5 do the following.
This worked for me.
http://www.talkingdotnet.com/upgrade-angular-4-app-angular-5-visual-studio-2017/