title: What's wrong with "$in" in mongoose
body: <p>Good day for everyone. I have a strange error working with mongoose</p>
  
  <pre><code>module.js:437
    var compiledWrapper = runInThisContext(wrapper, filename, tru
                          ^
  SyntaxError: Unexpected token .
      at Module._compile (module.js:437:25)
      at Object.Module._extensions..js (module.js:467:10)
      at Module.load (module.js:356:32)
      at Function.Module._load (module.js:312:12)
      at Module.require (module.js:362:17)
      at require (module.js:378:17)
      at Object.&lt;anonymous&gt; (E:\Dropbox\Dropbox\FCP\server.js
      at Module._compile (module.js:449:26)
      at Object.Module._extensions..js (module.js:467:10)
      at Module.load (module.js:356:32)
  </code></pre>
  
  <p>I gues it's goes from</p>
  
  <pre><code>dbQueries.remove({_id: {$in: {req.body.data}}, authorId: req.user._id}, function onRemoveSomething(err){
              if(err) {
                  res.json({epicFail: 'ERR_RestrictedAccess'});
                  return; 
              }
          });
  </code></pre>
  
  <p>So, I have no idea what is wrong.</p>