I doubt it. I think the opposite will happen: JS will become the defacto UI language for web, mobile, and desktop. The ongoing effort to improve the language h

I doubt it. I think the opposite will happen: JS will become the defacto UI language for web, mobile, and desktop. The ongoing effort to improve the language has hit some stumbling blocks and made some outright mistakes, but overall has improved the language significantly. Competitors like Elm and Dart are certainly compelling, but I don't think they have enough weight to entice UI platforms to converge. The major players seem to agree that incremental improvements are easier than getting a huge amount of diverse vendors to converge on an entirely new/different platform.