MVEMCJSUNPE

I don't think there's anything wrong with setup-deno: it's just that self-hosted runners don't have a lot of the same binaries that Github runners do. act has a similar issue:...

Here are some relevant articles that explain what @talentlessguy is talking about: [packages determining module system](https://nodejs.org/api/packages.html#packages_determining_module_system) [hybrid npm packages](https://2ality.com/2019/10/hybrid-npm-packages.html) [package checks](https://docs.skypack.dev/package-authors/package-checks#esm)