I am not sure if there is any "possibility" of officially porting this back for you. On a technical level, it's certainly possible. But as you can see these are final, and new features requested to be back-ported into earlier releases are typically viewed as enhancements.
With that said, I suppose there is nothing stopping you from getting your own JS libraries online since it is publicly available. Then you include it in your app and use it as you see fit.