title: Migration Angular 5 to 6 - 'ng update' hanging and do nothing
body: <p>I'm migration Angular from 5 to 6.</p>
  
  <p>After added latest angular-cli to my project i try to execute 'ng update'.</p>
  
  <p>But absolutely nothing happens (the console hangs and i have to cancel it).</p>
  
  <p>ng version:</p>
  
  <pre><code>Angular CLI: 6.0.8
  Node: 8.9.3
  OS: win32 x64
  Angular: 6.0.4
  ... animations, common, compiler, compiler-cli, core, forms
  ... http, platform-browser, platform-browser-dynamic
  ... platform-server, router
  
  Package                      Version
  ------------------------------------------------------
  @angular-devkit/architect    0.6.8
  @angular-devkit/core         0.6.8
  @angular-devkit/schematics   0.6.8
  @angular/cli                 6.0.8
  @schematics/angular          0.6.8
  @schematics/update           0.6.8
  rxjs                         6.2.0
  typescript                   2.9.1
  webpack                      3.12.0
  </code></pre>
  
  <p>Does somebody had the same issue?</p>