Instale a CLI angular
npm install -g @angular/cli
ng new my-dream-app
cd my-dream-app
ng serve
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npm install -g @angular/cli
ng new my-dream-app
cd my-dream-app
ng servenpm install -g @angular/cli //make sure you have node/npm installed
ng new <appname> // eg: ng new my-app
cd <appname> // cd my-app
ng serveng new my-dream-app
cd my-dream-app
ng serve