In my JavaScript (.js) files, I use a Visual Studio 2012 plugin for regions (here) like this:
//#region "My Region"
//Code here
//#endregion "My Region"
I would also like to have regions in TypeScript (.ts) files as well. Is this a possibility right now?
You can download Web Essentials 2012, it lets you use regions in TypeScript.
If you use, Visual Studio 2015, here is the freshest link. Web Essentials 2015.3