text: const webpack = require('webpack');
  const CopyWebpackPlugin = require('copy-webpack-plugin');
  const HtmlWebpackPlugin = require('html-webpack-plugin');
  const ForkTsCheckerWebpackPlugin = require('fork-ts-checker-webpack-plugin');
  const path = require('path');
  
  const utils = require('./utils.js');
  
  const getTsLoaderRule = env => {
    const rules = [
      {
        loader: 'cache-loader',
        options: {
          cacheDirectory: path.resolve('target/cache-loader')
        }
      },
      {
          loader: 'thread-loader',
          options: {
              // there should be 1 cpu for the fork-ts-checker-webpack-plugin
              workers: require('os').cpus().length - 1
          }
      },
      {
        loader: 'ts-loader',
        options: {
          transpileOnly: true,
          happyPackMode: true
        }
      }
    ];
    if (env === 'development') {
      rules.unshift({
        loader: 'react-hot-loader/webpack'
      });
    }
    return rules;
  };
  
  module.exports = options => ({
    cache: options.env !== 'production',
    resolve: {
      extensions: [
        '.js', '.jsx', '.ts', '.tsx', '.json'
      ],
      modules: ['node_modules'],
      alias: {
        app: utils.root('src/main/webapp/app/')
      }
    },
    module: {
      rules: [
        {
          test: /\.tsx?$/,
          use: getTsLoaderRule(options.env),
          include: [utils.root('./src/main/webapp/app')],
          exclude: ['node_modules']
        },
        {
          test: /\.(jpe?g|png|gif|svg|woff2?|ttf|eot)$/i,
          loaders: ['file-loader?hash=sha512&digest=hex&name=content/[hash].[ext]']
        },
        {
          enforce: 'pre',
          test: /\.jsx?$/,
          loader: 'source-map-loader'
        },
        {
          test: /\.tsx?$/,
          enforce: 'pre',
          loaders: 'tslint-loader',
          exclude: ['node_modules']
        }
      ]
    },
    stats: {
      children: false
    },
    optimization: {
      splitChunks: {
        cacheGroups: {
          commons: {
            test: /[\\/]node_modules[\\/]/,
            name: 'vendors',
            chunks: 'all'
          }
        }
      }
    },
    plugins: [
      new webpack.DefinePlugin({
        'process.env': {
          NODE_ENV: `'${options.env}'`,
          VERSION: `'${utils.parseVersion()}'`,
          DEBUG_INFO_ENABLED: options.env === 'development',
          // The root URL for API calls, ending with a '/' - for example: `"https://www.jhipster.tech:8081/myservice/"`.
          // If this URL is left empty (""), then it will be relative to the current context.
          // If you use an API server, in `prod` mode, you will need to enable CORS
          // (see the `jhipster.cors` common JHipster property in the `application-*.yml` configurations)
          SERVER_API_URL: `''`
        }
      }),
      new ForkTsCheckerWebpackPlugin({ tslint: true }),
      new CopyWebpackPlugin([
        { from: './node_modules/swagger-ui/dist/css', to: 'swagger-ui/dist/css' },
        { from: './node_modules/swagger-ui/dist/lib', to: 'swagger-ui/dist/lib' },
        { from: './node_modules/swagger-ui/dist/swagger-ui.min.js', to: 'swagger-ui/dist/swagger-ui.min.js' },
        { from: './src/main/webapp//swagger-ui/', to: 'swagger-ui' },
        { from: './src/main/webapp/static/', to: 'content' },
        { from: './src/main/webapp/favicon.ico', to: 'favicon.ico' },
        { from: './src/main/webapp/manifest.webapp', to: 'manifest.webapp' },
        // jhipster-needle-add-assets-to-webpack - JHipster will add/remove third-party resources in this array
        { from: './src/main/webapp/robots.txt', to: 'robots.txt' }
      ]),
      new HtmlWebpackPlugin({
        template: './src/main/webapp/index.html',
        chunksSortMode: 'dependency',
        inject: 'body'
      }),
    ]
  });
  