title: After running rake assets precompile, getting undefined in not a function
body: <p>Application is rich on javascript, contains bunch of backbonejs classes, jquery, bootstrap, and many libraries.</p>
  
  <p>Without precompile, everything works great. However, when I run rake assets:precompile locally or on production server, problem appear.</p>
  
  <pre><code>Uncaught TypeError: undefined is not a function                  application.js:8
  </code></pre>
  
  <p>application.js contains everything (just first glance), so I have no idea where can be a problem. Even I have no idea where to start looking for a problem.
  It's impossible to debug output javasript in application.js, right?</p>
  
  <p>Any ideas? Thanks guys.</p>