alt Hacker NewsPlain JavaScript is the ideal language for AI coding. It's very good with complex architectures.
I think partly it's because the training set contains a lot of JS, but also because complex software written in JavaScript must have impeccable architecture in order to exist at all.
It's rare to encounter a complex, functioning JavaScript application with bad architecture. I've never met any engineer smart enough to maintain a large spaghetti-code JavaScript project.
On the other hand, I've seen horrible TypeScript projects. If it wasn't for the helpful type annotations, no human being would have been able to maintain it.
I have always preferred plain JS without AI coding too, partially cause of what you said. Typescript encourages bad code. It also gets in the way of good code, doesn't really prevent bugs in prod, and complicates the toolchain.