[arechsteiner]

Not up to date with atom/electron but I kind of assumed that the whole point of building an editor in JavaScript was to be able to use it in some sort of browser context, for example on GitHub.

Why else would someone build an editor in JavaScript?

[epmatsw]

Easy crossplatform development in a language and framework that a huge number of developers are familiar with.

[crooked-v]

And, at the intersection of those two factors, the ability to easily make complicated editor plugins that Just Work without having to worry about the specifics of different OSes.

[kminehart]

I don't think it's necessarily about using JavaScript as much as it is about using Chromium / Electron to easily create a consistent cross-platform experience.