title: cannot find module 'angular2/core'
body: <p><a href="https://i.stack.imgur.com/4OGPM.png" rel="noreferrer"><img src="https://i.stack.imgur.com/4OGPM.png" alt="enter image description here"></a></p>
  
  <p>These red squiggly lines say <code>cannot find module 'angular2/core'</code>,<code>cannot find module 'angular2/router'</code>,<code>cannot find module 'angular2/http'</code>.
  I checked other posts in <a href="https://stackoverflow.com/questions/34312869/cannot-find-module-angular2-core-in-visual-studio-2015-update-1">SO</a> but it seems they have no appropriate answer.</p>
  
  <p>I also added a reference to the <code>d.ts</code> files as seen below but still not working.
  <a href="https://i.stack.imgur.com/Rwn1V.png" rel="noreferrer"><img src="https://i.stack.imgur.com/Rwn1V.png" alt="enter image description here"></a></p>
  
  <p>Other posts say that I need to configure something in the <code>tsconfig.json</code> file but I am using Visual Studio and I see no need to use the tscompiler suggested by the angular team because Visual Studio should be able to compile ts files automatically.</p>
  
  <p>Am I missing something? </p>
  
  <p><strong>Is the <code>tsconfig.json</code> still required even if you use Visual Studio?</strong></p>
  
  <p><strong>How do I get rid of these squiggly lines?</strong> </p>
  
  <p>Thanks!</p>
  
  <p>(I am using Visual Studio 2015 and latest Typescript engine)</p>
  
  <p>UPDATE:
  I am not sure what exactly is the npm package manager. But I have a pre-built <code>package.json</code> file that was created when the project was created. I use this file for installing npm packages.
  <a href="https://i.stack.imgur.com/GLaiz.png" rel="noreferrer"><img src="https://i.stack.imgur.com/GLaiz.png" alt="enter image description here"></a></p>