static-template

var getSources = function(name) {
    var filename = name.substr(templateParams.htmlWebpackPlugin.files.publicPath.length);
    return templateParams.compilation.assets[filename].source();
}
templateParams.htmlWebpackPlugin.files.css.map(getSources)

templateParams.htmlWebpackPlugin.files.js.map(getSources)

webpack.js

    merge({}, commonConfig, {
        target: 'node',
        entry: [
            './src/pages/internal-error/'
        ],
        output: {
            // path: './build/internalError/',
            path: path.join(__dirname,'./build/public/'),
            filename: '[name].js',
            libraryTarget: 'umd' // important to have it here because of plugin
        },
        // node: {
        //     console: true,
        //     global: false,
        //     process: true,
        //     Buffer: true,
        //     __filename: true,
        //     __dirname: true,
        //     fs: 'empty',
        //     net: 'empty',
        //     dns: 'empty'
        // },
        module: {
            loaders: [
                {
                    test: /\.js$/,
                    loader: 'babel',
                    exclude: /node_modules\//,
                    query: {
                        presets: ['babel-preset-es2015', 'babel-preset-react'],
                        plugins: resolveToProjectLevel(['babel-plugin-transform-class-properties'])
                    }
                },
                {
                    test: /\.scss$/,
                    loader: ExtractTextPlugin.extract('style-loader', 'css?minimize!sass!sass-resources')
                    // loader: 'css?minimize!sass!sass-resources'
                },
                {   // ttf? otf? file-loader?
                    test: /\.(png|jpg|jpeg|gif|svg|woff|woff2|ttf)$/,
                    loader: 'url-loader?limit=1000000&name=[name].[hash].[ext]'
                }
            ]
        },
        plugins: [
            failPlugin,
            new HtmlWebpackPlugin({
                inject: false,
                template: './src/pages/static-template/index.js'
            }),
            new ExtractTextPlugin('static.css'),
            new webpack.ContextReplacementPlugin(/react-intl\/lib\/locale-data/, dictRegExp),
            new webpack.ContextReplacementPlugin(/intl\/locale-data\/jsonp/, dictRegExp)
        ],
        sassResources: sassResources
    })