Supporting differential serving

[lodybo]

I don't know if this is being addressed in a separate issue (I couldn't find one), but I was wondering if there are any plans to add support for differential serving (also called "smart bundling"). I read Philip Walton's article about serving "modern" JavaScript to browsers that support it and polyfilled code to "legacy" browsers (like IE 11). This seems like a fitting case for CRA, because it targets modern browsers out of the box and needs polyfills for IE 11 and lower. I don't know if this is already on your roadmap or not?

[ianschmitz]

Yes we are planning to support this. Work is already underway at #6590

[lodybo]

Ah, my bad, I searched high and low in the issue list but forgot to look at the pull requests! I'm following that issue, thanks.