Typescript would have a far easier time in that scenario because much of it's syntax is simply Javascript with extra types attached. So, it could (I don't know

Typescript would have a far easier time in that scenario because much of it's syntax is simply Javascript with extra types attached. So, it could (I don't know the implementation details at all) 'just' strip away all the typescript-syntax, and give you your Javascript files. Rust has the issue that there's a lot of type-checking done, even in basic scenarios: such as setting a variable `let alpha = some_function(abc);`, you have to do some form of basic typechecking here to get the type of `alpha` (since that affects how it's stored on the stack). The simple case of `fn some_function(abc: u32) -> i16;` would be 'easy', but more complicated scenarios like generics would make your life harder. Though, I'm sure there's parts of the checking that could be eventually written so that they can be turned off, but I don't think it would provide nearly as much benefit as Typescript's non-correct compilation. Personally, I think it would be better to spend that time on just making the compiler faster. This is perhaps easier than I made it sound, but this is my assumptions as to why it wouldn't work that well.