Given that they support WASM, which then means they support traditional compiled languages life C, C++, Golang, and Rust, what're you using, Malbodge?
And even those, have you ever tried anything beyond printf debugging? I bet not.
Yeah, they are supported depending on the semantic interpretation of what the English word supported means.
As long one is happy with printf debugging, a language subset, and gimmick toolchains.