Having used TypeScript in production since early 2013 when it was still in Alpha, it has made the difference between failure and success on several occasions. Having spent a lot of time in C# and WPF, the limitations of JavaScript were always frustrating to me (especially in 2013) and my team at the time had pushed our project’s front end as far as we could.

While in the process of porting that project to TypeScript, we encountered a lot of situations where our custom JS patterns translated easily into TS classes. It was an absolute dream to work with, and we got our chromium-based desktop app tuned up from wasting 500MB of RAM to using about 32MB. Since then I use it for practically everything from automated voice system APIs to simple 2D games and everything in between. I cannot recommend it enough.