title: Mocha tests stop abruptly with: Cannot find module 'pg-native'
body: <p>Our mocha tests suddenly stop with this message on the console:</p>
  
  <pre><code>Cannot find module `pg-native`
  </code></pre>
  
  <p>No stack trace is shown, mocha doesn't render the normal output for the test. The test immediately stops.</p>
  
  <p>If I disable the test in question, all tests run as normal.</p>
  
  <p>Installing pg-native removes the error, but then mocha just hangs at that point instead.</p>