Take out dependencies and the app doesn't work

Do you know why if I don't have any dependencies in the app, why it doesn't work?  For example, if I remove the Bomb dependency and all references to it, the app won't load.  The error I get is `"Uncaught Error: No module: app"`.  I leave everything else exactly the same, so I should still be able to see the module.  I am at a loss of what is going on.
