Webpack.prd.conf - Problem with naming chunks

webpack.prd.conf.js

const path = require('path');
const utils = require('./utils');
const webpack = require('webpack');
const config = require('../config');
const merge = require('webpack-merge');
const baseWebpackConfig = require('./webpack.base.conf');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const MiniCSSExtractPlugin = require('mini-css-extract-plugin');
const CopyWebpackPlugin = require('copy-webpack-plugin');
const OptimizeCSSPlugin = require('optimize-css-assets-webpack-plugin');
const UglifyJsPlugin = require('uglifyjs-webpack-plugin');

let env;

switch (process.env.NODE_ENV) {
  case 'testing':
    env = require('../config/test.env');
    break;
  case 'e2e-mock':
    env = require('../config/e2e-mock.env');
    break;
  case 'cit':
    env = require('../config/cit.env');
    break;
  default:
    env = config.build.env;
}

const webpackConfig = merge(baseWebpackConfig, {

  output: {
    path: config.build.assetsRoot,
    filename: utils.assetsPath('js/[name].[chunkhash:3].js'),
    chunkFilename: utils.assetsPath('js/chunk-[name].[chunkhash:3].js')
  },

  optimization: {
    minimize: true
  },
  mode: 'production',

  plugins: [
    // http://vuejs.github.io/vue-loader/en/workflow/production.html
    new webpack.DefinePlugin({
      'process.env': env
    }),

    new CopyWebpackPlugin([
      {
        from: path.resolve(__dirname, '../static'),
        to: config.dev.assetsSubDirectory,
        ignore: ['.*']
      }
    ]),

    new UglifyJsPlugin({
      parallel: true,
      sourceMap: false,
      extractComments: {
        banner: 'The website uses open source software please visit URL below for overview of the licenses\nhttp://app.tracking.here.com/HERE_NOTICE',
      },
    }),

    // extract css into its own file
    new MiniCSSExtractPlugin({
      filename: utils.assetsPath('css/[name].[contenthash:3].css'),
      // Setting the following option to `false` will not extract CSS from codesplit chunks.
      // Their CSS will instead be inserted dynamically with style-loader when the codesplit chunk has been loaded by webpack.
      // It's currently set to `true` because we are seeing that sourcemaps are included in the codesplit bundle as well when it's `false`,
      // increasing file size: https://github.com/vuejs-templates/webpack/issues/1110
      allChunks: true
    }),

    new OptimizeCSSPlugin({
      cssProcessorOptions: config.build.productionSourceMap ? { safe: true, map: { inline: false } } : { safe: true }
    }),

    // generate dist index.html with correct asset hash for caching.
    // you can customize output by editing /index.html
    // see https://github.com/ampedandwired/html-webpack-plugin
    new HtmlWebpackPlugin({
      filename: process.env.NODE_ENV === 'testing' ? 'index.html' : config.build.index,
      template: 'index.html',
      inject: true,
      minify: {
        removeComments: true,
        collapseWhitespace: true,
        removeAttributeQuotes: true
        // more: https://github.com/kangax/html-minifier#options-quick-reference
      },
      // necessary to consistently work with multiple chunks via CommonsChunkPlugin
      chunksSortMode: 'dependency'
    }),

    utils.momentLocaleRemoval

  ]
});

if (config.build.productionGzip) {
  const CompressionWebpackPlugin = require('compression-webpack-plugin');

  webpackConfig.plugins.push(
    new CompressionWebpackPlugin({
      asset: '[path].gz[query]',
      algorithm: 'gzip',
      test: new RegExp('\\.(' + config.build.productionGzipExtensions.join('|') + ')$'),
      threshold: 10240,
      minRatio: 0.8
    })
  );
}

if (config.build.bundleAnalyzerReport) {
  const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin;
  webpackConfig.plugins.push(new BundleAnalyzerPlugin());
}

module.exports = webpackConfig;