We have a big project that works with extjs 3.4. Now we want to add new functionality and migrate to ext js 4.x. At the first step of migration I want to use sandboxing, but I don't want to use Ext4 namespace. In best case I want use Ext3 namespace fo ext 3.4 and Ext for 4.x. Can you advise whether this is possible and if yes, how to do it?
That would break all your classes correct? You classes use Ext currently so if you have Ext JS 3 use Ext3 and Ext JS 4 use Ext then all your classes would use Ext JS 4 which would likely break right? This is why Ext JS 3 uses Ext and Ext JS 4 uses Ext4