I was really frightened with it. But webstorm from jetbrains has an EAP version which basically shows your compiled JS file "nested" under your typescript file. It's a small seamingly meaningless change that was the difference with me being comfortable with TS vs. not -- screenshot here:

http://imgur.com/CLTk3wB

Even if you use React, you should try Typescript. Totally worth it.

+1 Billion minimum for this comment

FWIW you already know TypeScript, it's a superset of JavaScript (though you'll get few benefits from that).