I would love to see it used with real-world examples. There are two main situations IMO where this would be useful:
- For developers creating websites. The cost of set-up would be high because you'd need concatenation+minification+etc in place, so I'd love seeing some examples to see whether or not is worth it. From what I know, this could be similar to tree-shaking, so there could be huge gains here.
- For library creators. However the top-most variables would have to be preserved, since other developers need to use them (which seems possible[1]), so I'll be trying it out.
I am also wondering about the performance boost for JS (besides file size) and whether this would be useful for something like Node.js or not (free performance). If anyone has more information please share it.