node node_modules/webpack/bin/webpack.js --mode=production --env.prod

Hash: 7b126cdcbdda85d6b0f304152e501136ec85ed58
Version: webpack 4.6.0
Child
    Hash: 7b126cdcbdda85d6b0f3
    Time: 13298ms
    Built at: 2018-04-23 12:27:51
     1 asset
    Entrypoint main-client = main-client.js

    ERROR in window is not defined
Child
    Hash: 04152e501136ec85ed58
    Time: 13281ms
    Built at: 2018-04-23 12:27:51
     1 asset
    Entrypoint main-server = main-server.js

    ERROR in window is not defined

const path = require('path');
const webpack = require('webpack');
const merge = require('webpack-merge');
const AngularCompilerPlugin = require('@ngtools/webpack').AngularCompilerPlugin;
const CheckerPlugin = require('awesome-typescript-loader').CheckerPlugin;
var nodeExternals = require('webpack-node-externals');
const UglifyJsPlugin = require('uglifyjs-webpack-plugin');

module.exports = (env) => {
    // Configuration in common to both client-side and server-side bundles
    const isDevBuild = !(env && env.prod);

    //mode: isDevBuild ? 'development' : 'production';
    mode: 'development';

    const sharedConfig = {
        stats: { modules: false },
        context: __dirname,
        resolve: { extensions: ['.js', '.ts'] },
        output: {
            filename: '[name].js',
            publicPath: 'dist/' // Webpack dev middleware, if enabled, handles requests for this URL prefix
        },
        module: {
            rules: [
                { test: /.ts$/, include: /ClientApp/, use: isDevBuild ? ['awesome-typescript-loader?silent=true', 'angular2-template-loader', 'angular2-router-loader'] : '@ngtools/webpack' },
                { test: /.html$/, use: 'html-loader?minimize=false' },
                { test: /.css$/, use: ['to-string-loader', 'style-loader', isDevBuild ? 'css-loader' : 'css-loader?minimize'] },
                { test: /.(png|jpg|jpeg|gif|svg)$/, use: 'url-loader?limit=25000' },
                //font management
                {
                    test: /.(svg|eot|ttf|woff|woff2)$/,
                    use: [{
                        loader: 'file-loader',
                        options: {
                            name: 'images/[name].[hash].[ext]'
                        }
                    }]
                }
            ]
        },
        plugins: [new CheckerPlugin()]
    };

    // Configuration for client-side bundle suitable for running in browsers
    const clientBundleOutputDir = './wwwroot/dist';
    const clientBundleConfig = merge(sharedConfig, {
        entry: { 'main-client': './ClientApp/boot.browser.ts' },
        output: { path: path.join(__dirname, clientBundleOutputDir) },
        optimization: {
            minimizer: [
                // specify a custom UglifyJsPlugin here to get source maps in production
                new UglifyJsPlugin({
                    cache: true,
                    parallel: true,
                    uglifyOptions: {
                        compress: false,
                        ecma: 6,
                        mangle: true
                    },
                    sourceMap: true
                })
            ]
        },
        plugins: [
            new webpack.DllReferencePlugin({
                context: __dirname,
                manifest: require('./wwwroot/dist/vendor-manifest.json')
            })
        ].concat(isDevBuild ? [
            // Plugins that apply in development builds only
            new webpack.SourceMapDevToolPlugin({
                filename: '[file].map', // Remove this line if you prefer inline source maps
                moduleFilenameTemplate: path.relative(clientBundleOutputDir, '[resourcePath]') // Point sourcemap entries to the original file locations on disk
            })
        ] : [
                new AngularCompilerPlugin({
                    tsConfigPath: './tsconfig.json',
                    entryModule: path.join(__dirname, 'ClientApp/app/app.browser.module#AppModule'),
                    exclude: ['./**/*.server.ts']
                })
            ])
    });

    // Configuration for server-side (prerendering) bundle suitable for running in Node
    const serverBundleConfig = merge(sharedConfig, {
        resolve: { mainFields: ['main'] },
        entry: { 'main-server': './ClientApp/boot.server.ts' },
        plugins: [
            new webpack.DllReferencePlugin({
                context: __dirname,
                manifest: require('./ClientApp/dist/vendor-manifest.json'),
                sourceType: 'commonjs2',
                name: './vendor'
            })
        ].concat(isDevBuild ? [] : [
            new AngularCompilerPlugin({
                tsConfigPath: './tsconfig.json',
                entryModule: path.join(__dirname, 'ClientApp/app/app.server.module#AppModule'),
                exclude: ['./**/*.browser.ts']
            })
        ]),
        output: {
            libraryTarget: 'commonjs',
            path: path.join(__dirname, './ClientApp/dist')
        },

        target: 'node',
        externals: [nodeExternals()], // in order to ignore all modules in node_modules folder
        devtool: 'inline-source-map'
    });
    return [clientBundleConfig, serverBundleConfig];
};