That's from Deno's home page. What I'm talking about isn't whether TypeScript is useful for some projects, as that has been proven beyond question. What I'm saying is that as a tool for "quickly scripting", as claimed by Deno, it is unnecessary and counter productive to JavaScript as a whole.
My point is that the Deno project is a high profile JavaScript engine which, in my opinion, is misguided in their end-user focus on TypeScript and I think it's a shame.
Devs are always searching for the "right" way to do things, and can be easily convinced to do things like misuse "const" because some pedantic fool convinced them it was sorta like type safety, and therefore not using it was "baaaaaaad". And the sheep followed and now const is used everywhere, despite the clear and unambiguous intended functionality of the feature's designers, who added it as a way of tracking, incredibly, constants and nothing else.
It would be nice if we saved a generation of devs another debacle like const, NoSQL databases and UML.