Thanks for sharing such a useful implementation ✨

One thing I'd like to request is that the distributed elm-esm npm provides importable makeESModule.

I'm imagining an interface like:

import { toESM } from 'elm-esm'

toESM(compiledElmProject)

I could build my own function by copying your code actually. However, I'm wondering if elm-esm becomes a single source of truth for this purpose in the community, and we can contribute when Elm core changes outcome in the future.