[dfreire]

Exactly. It is not acceptable to buy into a large Javascript framework, but it is acceptable to buy into a whole different language? I fail to see the validity of this argument...

So what if one needs to use a Javascript library? Does one wait for the community to implement the wrapper around it? Does one implement the wrapper oneself?

Typescript on the other hand, seems to be more in line with the author's purposes, with one additional - and imo crucial - benefit: Javascript is valid Typescript (i.e. no need to change existing code, or wrap around libraries).