webpack.config.js

const path = require('path');
const webpack = require('webpack');

const plugins = [
  new webpack.DefinePlugin({
    'process.env': {
      NODE_ENV: JSON.stringify(process.env.NODE_ENV)
    }
  })
];

if (process.env.NODE_ENV === 'production') {
  plugins.push(
    new webpack.LoaderOptionsPlugin({
      minimize: true,
      debug: false
    })
  );
} else {
  plugins.push(
    new webpack.NamedModulesPlugin(),
    new webpack.ContextReplacementPlugin(
      /@angular(\\|\/)core(\\|\/)fesm5/,
      path.resolve(__dirname, './notfound')
    )
  );
}

module.exports = {
  mode: 'production',
  cache: true,
  context: __dirname,
  devServer: {
    contentBase: path.join(__dirname, 'example'),
    historyApiFallback: true,
    stats: {
      chunks: true,
      chunkModules: true,
      chunkOrigins: true,
      errors: true,
      errorDetails: true,
      hash: true,
      timings: true,
      modules: true,
      warnings: true
    },
    publicPath: '/build/',
    port: 3000
  },
  devtool: 'sourcemap',
  entry: {
    app: ['zone.js/dist/zone', './example/app/main.ts']
  },
  output: {
    filename: '[name].js',
    chunkFilename: '[name].js',
    publicPath: '/build/',
    path: path.resolve(__dirname, 'example/build')
  },
  node: {
    console: false,
    global: true,
    process: true,
    Buffer: false,
    setImmediate: false
  },
  module: {
    rules: [
      {
        test: /\.html$/,
        loader: 'html-loader'
      },
      {
        test: /\.scss$/,
        loaders: ['raw-loader', 'sass-loader']
      },
      {
        test: /\.ts$/,
        loaders: ['awesome-typescript-loader', 'angular2-template-loader']
      },
      {
        test: /\.(jpe?g|png|gif|svg)$/i,
        loader: 'file-loader'
      }
    ]
  },
  resolve: {
    extensions: ['.ts', '.js']
  },
  stats: {
    colors: false,
    hash: true,
    timings: true,
    assets: true,
    chunks: true,
    chunkModules: true,
    modules: true,
    children: true
  },
  optimization: {
    splitChunks: {
      cacheGroups: {
        vendor: {
          chunks: 'all',
          name: 'vendor',
          test: /[\\/]node_modules[\\/]/,
          enforce: true
        }
      }
    }
  },
  plugins
};