title: Typescript Intellisense & syntax checking not working in Visual Studio 2017 Community
body: <p>This is proving very frustrating, the latest version &amp; update of VS2017 Community has been installed. From my understanding the file <code>tsconfig.json</code> is not required, however in an attempt to get it working it has been created and the contents currently are :</p>
  
  <pre><code>{
    "compileOnSave": true,
     "compilerOptions": {
      "allowJs": true, 
      "noEmit": true
    },
  
    "typeAcquisition": {
      "enable": true
    }    
  }
  </code></pre>
  
  <p>As an example, I would expect when pressing the letter <code>s</code> as part of entering <code>var x:string;</code> a list of options be presented. This works correctly in VS Code.</p>
  
  <p>No squiggly red lines appear for syntax checking.</p>
  
  <p>In addition, saving the only typescript file in the project doesn't automatically build and create the Javascript file. Manually building the project does correctly create it.</p>