title: The error output was: Unknown option: '--extract-css'
body: <p><strong>I get the error "The NPM script 'start' exited without indicating that the Angular CLI was listening for requests. The error output was: Unknown option: '--extract-css'"</strong></p>
  
  <p>I have a project that I have not worked in a while. It is based on a visual studio angular template. When starting the project I get the error:</p>
  
  <blockquote>
    <p>An unhandled exception occurred while processing the request.
    AggregateException: One or more errors occurred. (One or more errors
    occurred. (The NPM script 'start' exited without indicating that the
    Angular CLI was listening for requests. The error output was: Unknown
    option: '--extract-css'</p>
    
    <p>npm ERR! code ELIFECYCLE</p>
    
    <p>npm ERR! errno 1</p>
    
    <p>npm ERR! angular@0.0.0 start: <code>ng serve --extract-css "--port"
    "54197"</code> npm ERR! Exit status 1 npm ERR!  npm ERR! Failed at the
    angular@0.0.0 start script. npm ERR! This is probably not a problem
    with npm. There is likely additional logging output above.</p>
    
    <p>npm ERR! A complete log of this run can be found in:</p>
    
    <p>)) System.Threading.Tasks.Task.GetResultCore(bool
    waitCompletionNotification)</p>
    
    <p>InvalidOperationException: The NPM script 'start' exited without
    indicating that the Angular CLI was listening for requests. The error
    output was: Unknown option: '--extract-css'</p>
    
    <p>npm ERR! code ELIFECYCLE</p>
    
    <p>npm ERR! errno 1</p>
    
    <p>npm ERR! angular@0.0.0 start: <code>ng serve --extract-css "--port"
    "54197"</code> npm ERR! Exit status 1 npm ERR!  npm ERR! Failed at the
    angular@0.0.0 start script. npm ERR! This is probably not a problem
    with npm. There is likely additional logging output above.</p>
    
    <p>npm ERR! A complete log of this run can be found in:</p>
    
    <p>Microsoft.AspNetCore.SpaServices.AngularCli.AngularCliMiddleware+d__3.MoveNext()</p>
  </blockquote>
  
  <p>I would like to be able to run the angular template project from visual studio. It runs fine when running through angular cli.</p>