webpack.config.js

var path = require("path");

module.exports = function (evn, argv) {
    var mode = argv.mode || "development";
    var isProduction = mode === "production";
    console.log("Webpack mode: " + mode);

    return {
        mode: mode,
        devtool: isProduction ? false : "eval-source-map",
        entry: './docs/App.fs.js',
        output: {
            filename: 'bundle.js',
            path: path.join(__dirname, './public'),
        },
        devServer: {
            contentBase: './public',
            port: 8080
        },
        module: {
            rules: [
                {
                    test: /\.(sass|scss|css)$/,
                    use: [
                        'style-loader',
                        {
                            loader: 'css-loader',
                        },
                        {
                            loader: 'sass-loader',
                            options: { implementation: require("sass") }
                        }
                    ],
                },
            ]
        }
    };
}