title: ERROR in Cannot find module 'node-sass'
body: <p>Config: macOS High Sierra, version 10.13.2, node:v8.1.2 npm:5.0.3
  When I run npm start in my angularjs project I get this error:</p>
  
  <pre><code>ERROR in Cannot find module 'node-sass'
  </code></pre>
  
  <p>After this I run:</p>
  
  <pre><code>npm i node-sass
  </code></pre>
  
  <p>Now I get this error:</p>
  
  <pre><code>gyp: No Xcode or CLT version detected!
  gyp ERR! configure error 
  gyp ERR! stack Error: `gyp` failed with exit code: 1
  </code></pre>
  
  <p>Why won't npm install node-sass? How can I install node-sass?</p>