webpack.common.js

const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const Dotenv = require('dotenv-webpack');

module.exports = {
  entry: {
    index: './src/index.js',
  },
  plugins: [
    new HtmlWebpackPlugin({
      favicon: './src/images/vector-map.jpeg',
      template: './src/index.html',
    }),
    new Dotenv({
      // path: `./.env.${env}`,
      systemvars: true, // load all the predefined 'process.env' variables which will trump anything local per dotenv specs.
    }),
  ],
  output: {
    filename: '[name].bundle.js',
    path: path.resolve(__dirname, 'dist'),
    assetModuleFilename: 'images/[name][ext][query]',
    clean: true,
  },
  module: {
    rules: [
      {
        test: /\.css$/i,
        use: ['style-loader', 'css-loader'],
      },
      {
        test: /\.(png|svg|jpg|jpeg|gif)$/i,
        type: 'asset/resource',
      },
      {
        test: /\.m?js$/,
        exclude: /(node_modules|bower_components)/,
        use: {
          loader: 'babel-loader',
          options: {
            presets: ['@babel/preset-env'],
            plugins: ['@babel/plugin-proposal-object-rest-spread'],
          },
        },
      },
    ],
  },
};