title: "npm install" does not install @angular/cli, @angular/compiler-cli and @angular-devkit/build-angular properly
body: <p>I am trying to install npm using the <code>npm install</code> command, and all the packages are installed except @angular/cli, @angular/compiler-cli and @angular-devkit/build-angular.</p>
  <p>I tried installing them individually, but it is not working. Please tell me how to fix this problem.</p>
  <p>Illustration:</p>
  <p><img src="https://i.stack.imgur.com/c0FqF.png" alt="enter image description here" /></p>