title: Can Express.Js output minified JSON?
body: <p>I'm currently switching from restified to Express, and I noticed that the output of res.send({}) in Express has pretty-printed JSON with white space, while the Restify output is minified without white space.</p>
  
  <p>Since the JSON is not for human consumption, I prefer the minified output. Is there an easy way to get Express to output minified JSON without individually changing all the res.send() calls? I would also prefer a setting over adding more middle-ware for performance reasons.</p>