text: const webpack = require('webpack');
  const writeFilePlugin = require('write-file-webpack-plugin');
  const webpackMerge = require('webpack-merge');
  const BrowserSyncPlugin = require('browser-sync-webpack-plugin');
  const ForkTsCheckerWebpackPlugin = require('fork-ts-checker-webpack-plugin');
  const FriendlyErrorsWebpackPlugin = require('friendly-errors-webpack-plugin');
  const SimpleProgressWebpackPlugin = require('simple-progress-webpack-plugin');
  const WebpackNotifierPlugin = require('webpack-notifier');
  const path = require('path');
  const sass = require('sass');
  
  const utils = require('./utils.js');
  const commonConfig = require('./webpack.common.js');
  
  const ENV = 'development';
  
  module.exports = (options) => webpackMerge(commonConfig({ env: ENV }), {
      devtool: 'eval-source-map',
      devServer: {
          contentBase: './target/classes/static/',
          proxy: [{
              context: [
                  '/'
              ],
              target: `http${options.tls ? 's' : ''}://localhost:8080`,
              secure: false,
              changeOrigin: options.tls
          }],
          stats: options.stats,
          watchOptions: {
              ignored: /node_modules/
          }
      },
      entry: {
          polyfills: './src/main/webapp/app/polyfills',
          global: './src/main/webapp/content/scss/global.scss',
          main: './src/main/webapp/app/app.main'
      },
      output: {
          path: utils.root('target/classes/static/'),
          filename: 'app/[name].bundle.js',
          chunkFilename: 'app/[id].chunk.js'
      },
      module: {
          rules: [{
              test: /\.ts$/,
              enforce: 'pre',
              loader: 'tslint-loader',
              exclude: [/(node_modules)/, new RegExp('reflect-metadata\\' + path.sep + 'Reflect\\.ts')]
          },
          {
              test: /\.ts$/,
              use: [
                  'angular2-template-loader',
                  {
                      loader: 'cache-loader',
                      options: {
                        cacheDirectory: path.resolve('target/cache-loader')
                      }
                  },
                  {
                      loader: 'thread-loader',
                      options: {
                          // There should be 1 cpu for the fork-ts-checker-webpack-plugin.
                          // The value may need to be adjusted (e.g. to 1) in some CI environments,
                          // as cpus() may report more cores than what are available to the build.
                          workers: require('os').cpus().length - 1
                      }
                  },
                  {
                      loader: 'ts-loader',
                      options: {
                          transpileOnly: true,
                          happyPackMode: true
                      }
                  },
                  'angular-router-loader'
              ],
              exclude: /(node_modules)/
          },
          {
              test: /\.scss$/,
              use: ['to-string-loader', 'css-loader', {
                  loader: 'sass-loader',
                  options: { implementation: sass }
              }],
              exclude: /(vendor\.scss|global\.scss)/
          },
          {
              test: /(vendor\.scss|global\.scss)/,
              use: ['style-loader', 'css-loader', 'postcss-loader', {
                  loader: 'sass-loader',
                  options: { implementation: sass }
              }]
          }]
      },
      stats: process.env.JHI_DISABLE_WEBPACK_LOGS ? 'none' : options.stats,
      plugins: [
          process.env.JHI_DISABLE_WEBPACK_LOGS
              ? null
              : new SimpleProgressWebpackPlugin({
                  format: options.stats === 'minimal' ? 'compact' : 'expanded'
                }),
          new FriendlyErrorsWebpackPlugin(),
          new ForkTsCheckerWebpackPlugin(),
          new BrowserSyncPlugin({
              host: 'localhost',
              port: 9000,
              proxy: {
                  target: 'http://localhost:9060',
                  proxyOptions: {
                      changeOrigin: false  //pass the Host header to the backend unchanged  https://github.com/Browsersync/browser-sync/issues/430
                  }
              },
              socket: {
                  clients: {
                      heartbeatTimeout: 60000
                  }
              }
          }, {
              reload: false
          }),
          new webpack.ContextReplacementPlugin(
              /angular(\\|\/)core(\\|\/)/,
              path.resolve(__dirname, './src/main/webapp/')
          ),
          new writeFilePlugin(),
          new webpack.WatchIgnorePlugin([
              utils.root('src/test'),
          ]),
          new WebpackNotifierPlugin({
              title: 'JHipster',
              contentImage: path.join(__dirname, 'logo-jhipster.png')
          })
      ].filter(Boolean),
      mode: 'development'
  });
  