Yet another Webpack loader for the Elm programming language.

It's written with the following goals in mind:

• Work primarily with Webpack v4 and Elm 0.19, don't try and be backwards compatible.
• Work robustly and provide useful errors - hence it's actually written in Purescript. This is more important to me than performance.
• Zero assumptions. Anything uncertain is passed in via options.
• Zero npm dependencies.

Just about every combination of elm, webpack, and loader is taken on npm. So this will live on Github for the forseeable future.

package.json

{
    "name": "your-thing"
    ...
    "dependencies": {
        ...
        "elm-loader": "jmackie/elm-loader#0.3.0"
        ...
    }
}

webpack.config.js

module.exports = {
    ...

    module: {
        rules: [
            {
                test: /\.elm$/,
                exclude: [/elm-stuff/, /node_modules/],
                use: [
                    {
                        loader: 'elm-loader',
                        options: {
                            compiler: 'elm',  // use `elm` on PATH
                            debug: true,      // --debug
                            watch: true,      // running in watch mode
                        },
                    },
                ],
            },
        ],
    },

};

Path to the elm compiler binary. This becomes the command argument to child_prcess.spawn.

If set to true the --debug flag will be passed to elm make

If set to true the --optimize flag will be passed to elm make

If set to true all elm file dependencies will be registered with Webpack.

Optional working directory in which to run.

Optional function to be executed before compilation starts. You can use this for logging.

Optional function to be executed after compilation finishes. You can use this for logging