[krapp]

>Typescript will steadily supplant JavaScript and browsers will eventually roll out native support for it, and JS will be relegated to a legacy language.

Typescript can't supplant javascript or relegate it to a legacy language... because typescript doesn't compile to bytecode or machine language, but to javascript. Browsers that support typescript natively must by definition also support javascript natively, and the more of the former you have, the more of the latter you have.

[dsego]

And C++ used to compile to C at first, I don't see your point.