"Yet another" actually mean it is very special
Firstly, its running on top of Ext 3.0 bridged to Joose 3.0.
You can examine the sources to receive the expression about how Joose code can looks like.
Secondly, its written as JSAN distribution.
This mean you can install it on your system. This also mean that it has several pre-requisites - modules, which should be installed prior.
This is a very opposite of the usual "include a copy of everything" approach.
For installation information please refer to this post.
Simple test suite
Joose test suite