Either way, I'm also in the planning phases and for sure I'm going with Typescript. It's getting a lot of praise from both Java and JS developers and works with both Angular and React (although that does seem to favor ES6). In fact I just spoke with a startup that moved from Coffeescript to Typescript and React.
I am leaning toward Angular 2, but mostly because Angular is about twice as large as React in the overall job market. The HN job market is tiny subset of that, so take that into consideration. It may change, but it's a huge lead. It's also written in Typescript, so it's Google + MS, and Google is using it for their big, external facing projects. My guess is that it will retain it's lead for at least a year, but both will be popular for a long time.