Bundler Typescript failing on TS type alias

[BSteffaniak]

Hi, I'm super new to using swc and I'm trying to use it for bundling my typescript to js targeting the browser. I'm using the swc rust crates directly (swc_bundler, etc).

When attempting to feed it a file that contains a type alias, I get this error:

internal error: entered unreachable code: This visitor does not support TypeScript. This method fails for optimization purposes. Encountered in unreachable visitor: visit_mut_ts_type_alias_decl

I'm not sure why I'm getting this. This is the Syntax configuration I am using:

Syntax::Typescript(TsSyntax {
    tsx: false,
    decorators: true,
    dts: true,
    no_early_errors: false,
    disallow_ambiguous_jsx_like: true,
})

and the bundler config:

swc_bundler::Config {
    require: false,
    disable_inliner: false,
    external_modules: Default::default(),
    disable_fixer: true,
    disable_hygiene: true,
    disable_dce: false,
    module: Default::default(),
},

I can post the full source if needed, but hoping this is just a simple misunderstanding on my part of how to do something simple.

[BSteffaniak]

I think I was able to get this working. I noticed that the ts_to_js strips all ts types using strip, so I tried that out like this:

let module = parse_file_as_program(&fm, syntax, EsVersion::Es2020, None, &mut Vec::new()).unwrap();

let unresolved_mark = Mark::new();
let top_level_mark = Mark::new();

let module = module.apply(&mut strip(unresolved_mark, top_level_mark));

This got me past that error (and bundling worked just fine).