If my understanding is correct, new features appear in cocos2d-html5, after the corresponding JSB bindings are generated from the Cocos2d-x project.
So in this case, CCDrawNode is available in cocos2dx from v2.1 onwards, but it is not yet available in cocos2d-html5 2.1. Maybe it was not part of coordinated release.
Is there a documented way to generate JSB bindings for Cocos2d-X or for C++ code in general?
Is there a documented way to go about writing cocos2d-html5 classes for the generated JSB bindings?