title: how do I troubleshoot TypeScript built-in extension not working in VSCode?
body: <p>One of my co-worker is having a very hard time getting VSCode to work properly on his Ubuntu 16.04 machine.</p>
  
  <p>I tried on a fresh virtual machine with Ubuntu 16.04 Desktop and the latest version of VSCode and all works fine.</p>
  
  <p>But on his machine, none of the TypeScript features work (<em>go to definition</em>, <em>rename symbol</em>, etc.). One thing I did notice is that his instance did not show the <code>TypeScript</code> extension in the <code>Output</code> window like below:
  <a href="https://i.stack.imgur.com/Z84V3.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Z84V3.png" alt="output window"></a></p>
  
  <p>How do(es) I(he) troubleshoot this? </p>