text: /**
   * Copyright 2020 Google Inc. All Rights Reserved.
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *     http://www.apache.org/licenses/LICENSE-2.0
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  const HtmlWebpackPlugin = require('html-webpack-plugin');
  const ScriptExtHtmlWebpackPlugin = require('script-ext-html-webpack-plugin');
  // const PreloadPlugin = require('preload-webpack-plugin');
  
  module.exports = {
    entry: {
      index: './src/index.js',
      profile: './src/profile.js',
    },
    output: {
      filename: '[name].[contenthash:5].js',
    },
    optimization: {
      // create a runtime.js script containing the module loader
      // runtimeChunk: 'single',
  
      splitChunks: {
        // extract shared dependencies from entry bundles:
        chunks: 'all',
        // allow any size dependency to be shared:
        minSize: 0,
      },
    },
    plugins: [
      new HtmlWebpackPlugin({
        filename: 'index.html',
        excludeChunks: ['profile'],
        chunks: 'all',
        prefetch: false,
        minify: {
          removeScriptTypeAttributes: true,
        },
      }),
      new HtmlWebpackPlugin({
        filename: 'profile.html',
        excludeChunks: ['index'],
        chunks: 'all',
        prefetch: false,
        minify: {
          removeScriptTypeAttributes: true,
        },
      }),
      // The following two plugin setups produce the same result:
      new ScriptExtHtmlWebpackPlugin({
        preload: {
          test: /\.js$/,
          chunks: 'async',
        },
      }),
      // new PreloadPlugin({
      //   rel: 'preload',
      //   include: 'asyncChunks',
      // }),
    ],
  };
  