elm-typescript-interop

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Using https://github.com/stil4m/elm-syntax may potentially address a few problems:

• The elm-ast libraries have several parsing bugs
• The elm-ast libraries are not planning on upgrading to Elm 0.19
• Using elm-syntax may also help with only parsing modules which are imported somewhere

Here's the original comment suggesting this library: https://github.com/dillonkearns/elm-typescript-interop/issues/15#issuecomment-438448890

Here are some current issues in elm-typescript-interop it could address:

• Performance for large projects https://github.com/dillonkearns/elm-typescript-interop/issues/16
• Ignore unimported modules https://github.com/dillonkearns/elm-typescript-interop/issues/11
• Parsing bugs like https://github.com/dillonkearns/elm-typescript-interop/issues/15 and several others

If #18 is merged, then FYI it will have to be updated if we move away from elm-ast.

I'm throwing in a wild idea: How about some manual pre-processing of the modules? In particular, stripping -- comments to alleviate the problems experienced in #15.

Also note https://github.com/andre-dietrich/parser-combinators

I suggested the manual preprocessing in a github issue a while back for the Bogdanp parsing library, but it seems like that one isn't being actively maintained lately (at least the last I checked).

I think the still4m package is the way to go. It will take some time to change things over, though and I don't have much bandwidth at the moment, but I'll go that route when I do it.