For my personal project (which is in Rust) I use Atom, which is new for me, but I find to be really impressive. Both its plugin system (which allow for all the extensibility and in my case Rust support) is fantastic, and I don't know where the complaints about speed come from (it's far lighter than IntelliJ, obviously).
I've really been enjoying Atom when I do use it, and don't see why I'd switch to VSCode unless it had better support for Rust. But perhaps I'm missing something.
I am a bit turned off by VSCode, it's workflow by the looks of it feel strange to me. Yes I've tried it, yes it was in beta, but right now I am having only Vim on my Mac. Uninstalled Atom this morning, got a little bit frustrated.
It just feels like a web app, I mean it basically is. And when I dragged it to AppCleaner, it is so heavy, 260MB+.
I want GitHub to stream line it. If other were able (look at VSCode for example) that GitHub can. That things leaks memory very now and then. Sublime feels rock solid and blazingly fast compared to Atom, and there you see the difference between native and web. Those fractions of seconds are important when you have app like text editor, especially if used by developers and geeks. :)
I mean, what is going on, why people tend to blow VSCode out of the water about how good it is!? I mean, ok it is cool, has some really nifty features I would like to have in some X editor, but no way in hell it is as game-changing as people state. And I really can't see my self switching from Vim to VSCode. Even when I decide to use GUI Editor (I am not HC vim user, for some environments I use it, for others I don't), it is Sublime. I ditched Sublime for Atom since December, and on OS X, it is working very well. Not blazingly fast and smooth as Sublime, but it is far far better than before.
But all in all I am not biting that Electron base for text editor. I mean ok, JS is cool, web is the future, flexible cross-platform solutions are the thing, but it still isn't comparable to native stuff. At least to me, it is getting there year by year but still a long way to go.