module.exports = {
    mode: 'production',
    entry: {
        'babel-stuff': [
            './var/www/s/babel-external-helpers.js',
            'babel-polyfill'
        ]
        // ... many other entrypoints
    },
    output: {
        path: 'some path to output',
        publicPath: '/s/cc/',
        filename: 'bundles/[chunkhash].js',
        chunkFilename: 'chunks/[chunkhash].js'
    },
    devtool: false,
    plugins: [
      // extract css
    ],
    optimization: {
        splitChunks: {
            maxInitialRequests: 10,
            maxAsyncRequests: 10,
            chunks: 'all',
            // disable css-splitting till fix the bug in mini-css-extract-plugin
            cacheGroups: {
                vendors: {
                    test: /\/node_modules\/.+\.js$/,
                    priority: -10
                },
                default: {
                    test: /\.js$/,
                    minChunks: 2,
                    priority: -20,
                    reuseExistingChunk: true
                }
            }
        },
        module: {
            noParse: [
                // some regexps
            ],
            rules: [
                {
                    test: /\.js$/,
                    use: [
                        {
                            loader: 'babel-loader',
                            options: {
                                cacheDirectory: 'path/to/cache'
                            }
                        }
                    ]
                },
                // other loaders for styl/css/svg/etc... 
            ]
        }
    };