webpack.config.js

const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const MiniCssExtractPlugin = require("mini-css-extract-plugin");
const devMode= process.env.NODE_ENV !== 'production';

module.exports = {
  entry: './app.js',
  output: {
    path: path.resolve(__dirname, 'backend/public'),
    filename: 'bundle.js',
  },
  mode: 'production',
  module : {
    rules: [
      {
        test: /\.(js|jsx)$/,
        exclude: /node_modules/,
        loader: "babel-loader",
      },
      {
        test: /\.css/,
        use: [
          devMode ? 'style-loader' : MiniCssExtractPlugin.loader,
          'css-loader'
        ]
      }
    ]
  },
  plugins: [
    new HtmlWebpackPlugin({
      // template: "./backend/views/index.ejs",
      // template: "./backend/views/shorten.ejs",
      template: "./frontend/shorten.html",
    }),
    new MiniCssExtractPlugin({
      filename: "css/bundle.css"
    })
  ],
  devServer: {
    open: true, // para abrir el navegador
    compress: true,
    port: 8080,
  },
};