What about Rodeo? From the looks of it, it's getting close. And honestly, at this point I continue to use R because of RStudio and the tidyverse, otherwise I would have ditched the language a long time ago.
Tidyverse is massively overrated if you ask me. The good parts of it (dplyr and ggplot) are nice for interactive work. And that's about it - if you're deploying the code in an application, you're best off sticking to base R as much as possible.
Also, it used electron.
So long live RStudio, I guess.