Repository names with . generate invalid JS

[neoeinstein]

Given an elm-package.json file like the following:

{
    "version": "1.0.0",
    "summary": "Error reproduction Elm 0.17",
    "repository": "https://github.com/example/error.repro.git",
    "license": "BSD3",
    "source-directories": [
        "src"
    ],
    "exposed-modules": [],
    "dependencies": {
        "elm-lang/core": "4.0.0 <= v < 5.0.0",
        "elm-lang/html": "1.0.0 <= v < 2.0.0"
    },
    "elm-version": "0.17.0 <= v < 0.18.0"
}

Elm generates invalid JavaScript:

In the event of a . in a repository name, Elm should convert it to an underscore as it does in other cases of - in a repository name.

[evancz]

That would be ambiguous though. tom/this.that would be the same as tom/this-that. Is there a better way to avoid this?

[zsiciarz]

Ran into a similar problem in my project (https://github.com/zsiciarz/variablestars.net/tree/elm-0.17). The generated JS file contains names like these:

_zsiciarz$variablestars.net$Astronomy$dateToJd
_zsiciarz$variablestars.net$Astronomy$jdToTime

and so on. The actual console error is SyntaxError: missing ; before statement pointing to the first occurence of a variable name like above.

Here's my elm-package.json. Not sure how to fix this though, perhaps there could be a way to set some sort of alias for the project, so that generated identifiers use that instead of the name of the repo?

[evancz]

Tracking in #1377, thanks for the report!

[evancz]

In 0.19 it will not be possible to give packages names like this, thereby avoiding the code gen issues and making package names more uniform across the ecosystem.

[mfeineis]

I ran into an issue with the no dots in project names approach: I'm currently building a myname.github.io page and this repo has to have the dots in the name for github to use that repo when you're using the simplest approach. See githubs docs on configuring a publishing source on that. Just wanted that to sit in a place other than Slack :-). Thanks for the good work, it's making my life so much more fun.

[zwilias]

@mfeineis It's recommended to leave the repository set to the default http://github.com/user/project.git for applications. There is no value to changing it, other than possibly breaking the compiled result 😉 .

There is a bunch of metadata in elm-package.json that only makes sense to change for packages published to the package repository (like version, repo, description, license). If I'm not mistaken, these fields will no longer longer be available in the application descriptor file in Elm 0.19; to prevent this type of confusion.

[mfeineis]

@zwilias Thank your for the clarification, that's exactly what I did :-). As you guessed the result won't be published on package.elm-lang.org but is for my blog that is currently in migration-to-elm-static-html-lib mode.