title: Istanbul code coverage : how to ignore such lines?
body: <p>when performing code coverage , all my .catch() statements are uncovered, is there a way to specify /* istanbul ignore next */ somewhere
   ?</p>
  
  <p>ex :</p>
  
  <pre><code> function list(req, res, next) {
    const { limit = 50, skip = 0 } = req.query;
    User.list({ limit, skip })
      .then(users =&gt; res.json(users))
      .catch(e =&gt; next(e)); &lt;= this line is marked as uncovered
    }
  </code></pre>