webpack.common.js

const HtmlWebpackPlugin = require('html-webpack-plugin');
const CopyWebpackPlugin = require('copy-webpack-plugin');
const ServiceWorkerWebpackPlugin = require('serviceworker-webpack-plugin');
const path = require('path');

module.exports = {
  entry: path.resolve(__dirname, 'src/scripts/index.js'),
  output: {
    path: path.resolve(__dirname, 'dist'),
    filename: 'bundle.js',
  },
  module: {
    rules: [{
      test: /\.css$/,
      use: [{
        loader: 'style-loader',
      },
      {
        loader: 'css-loader',
      },
      ],
    },
    {
      test: /\.(png|svg|jpg|jpeg|gif)$/i,
      use: [{
        loader: 'file-loader',
      }],
    },
    ],
  },

  plugins: [
    new HtmlWebpackPlugin({
      template: path.resolve(__dirname, 'src/templates/index.html'),
      filename: 'index.html',
    }),
    new CopyWebpackPlugin({
      patterns: [{
        from: path.resolve(__dirname, 'src/public/'),
        to: path.resolve(__dirname, 'dist/'),
      }],
    }),
    new ServiceWorkerWebpackPlugin({
      entry: path.resolve(__dirname, 'src/scripts/sw.js'),
    }),
  ],
};