It is also not as elaborate as your parent is trying to say. It's less straight forward than TS->JS (because they are intentionally super/sub languages and the

It is also not as elaborate as your parent is trying to say. It's less straight forward than TS->JS (because they are intentionally super/sub languages and the same runtime) but it's not the 'magic' that is indicated. That's why there have been many transpilation projects (which were quite perfect and solid, just missing libraries). Without the tooling and support they are useless though (and died).