Обновить угловой CLI
For updating angular cli type this command :
ng update @angular/cli @angular/core
Ankur
For updating angular cli type this command :
ng update @angular/cli @angular/core
content_copy
ng update @angular/cli @angular/core
npm uninstall -g @angular-cli
npm install -g @angular/cli@latest
ng update @angular/cli@8.1.1 @angular/core@8.1.1
ng update @angular/core @angular/cli --force