I don't see anything on the horizon that would be a good JS replacement. At the moment, frontend libraries like React, and the new ES6 features is the best we

I don't see anything on the horizon that would be a good JS replacement. At the moment, frontend libraries like React, and the new ES6 features is the best we have. WebAssembly will allow other languages to run in the browsers, but how it will work is still unclear. The only other option I've heard of is Elm. I haven't used it, but many people claim that it might be a good JS replacement. Though I don't know if it offers enough of an advantage to cause everyone to switch. If anyone has more information or opinions - please share.