The container is abstracted, so it can receive whatever type of js the server wants to send. Specifically, the js that we will use will not be compiled so that it can be verified (and it will also be open source). The main problem with this is that it wastes bandwidth which shouldnt be a problem for two reasons: the architecture can cache the js intelligently and the extension will have a lot of the crypto stuff embedded meaning that it wont need to be redistributed per access.