We’ll dive right into JSX by rendering a static version of what our application will look like. We’ll cover the basic syntax of JSX and point out where it differs from html.
Which package are you using for the JSX autocomplete, that would be super handy.. I currently use react for atom package, but don't see it autocomplete the jsx.
I'm just using this react plugin. https://atom.io/packages/react
I have other plugins, but nothing else that should be doing anything with JSX. There are settings for the plugin and I have selected "Enable for All JavaScript Files". Maybe it's just not running in your JS files?
Hope you're able to get it working.