on update angular code example

Example 1: ng update @angular/core @angular/cli

npm uninstall -g angular-cli
npm install -g @angular/cli@latest

Example 2: angular update

npm uninstall -g @angular-cli
npm cache verify
npm install -g @angular/cli@latest

Example 3: update angular

npm uninstall -g @angular-cli
npm install -g @angular/cli@latest

Example 4: ng update @angular/core @angular/cli

rm -rf node_modules
npm uninstall --save-dev angular-cli
npm install --save-dev @angular/cli@latest
npm install