Elm AST

[DamianReeves]

Subject of the feature

Elm is a wonderful functional programming language.
We have found that Elm is a wonderful way to model business domains, in the spirit of Domain Modeling Made Functional.

I propose the addition of an Elm AST to unist.

This would allow to develop macros and transpilation to other languages (i.e. F# or OCaml).

Expected behaviour

Using something like elm-syntax we should get a unist style elm syntax tree.

This means we don't need a parser.

Alternatives

I've undergone this process outside of the unified ecosystem, but the unified ecosystem offloads many concerns that would otherwise need to be addressed.

[wooorm]

Awesome, yeah great idea! Want to work on this?

[DamianReeves]

Would love to. Where/how do I get started?

[wooorm]

Something like this?

1. Do you have a parser? Make sure it has positional info (has info on where things originated from)
2. Get a syntax tree format going. As in, a clone of mdast, for elm
3. Write something to convert the result of the parser to your Elm AST ($parsername-to-east)
4. Figure out how to get that Elm AST into a string (east-to-string)
5. Create the wrapper of the unified ecosystem (as in, a clone of the rehype project)

[ChristianMurphy]

Thanks for starting the discussion @DamianReeves!
We're in the process unifying ideas in with discussions unifiedjs/collective#44
If you'd like to continue this thread, or start a new one https://github.com/unifiedjs/unified/discussions will be the home for ideas going forward.