[martijndeh]

I agree. Additionally, it looks like the comments feature is compatible with the JSDoc syntax. I'm not too sure about the return syntax though. This means I can start type checking some of the large and older JavaScript projects, all documented with JSDoc, of some of my clients. I'm eager to test this out.

In my experience, in some organisations, it's hard to introduce TypeScript instead of JavaScript, because of reasons. For example, one of my clients made a bet on CoffeeScript back in the days, and that didn't work out, so now they are hesitant to adopt anything. Being able to introduce at least the type checking feature will start to drive change to this hesitation.