webpack.config.js

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


module.exports = {
    mode: 'development',
    entry: './src/index.js',
    output: {
      path: path.resolve(__dirname, 'dist'),
      filename: 'bundle.js',
      publicPath: '/'
    },
    resolve: {
      extensions: ['.js', '.jsx'],
    },
    module: {
      rules: [
        {
          test: /\.(js|jsx)$/,
          exclude: /node_modules/,
          use: {
            loader: 'babel-loader',
          },
        },
        {
          test: /\.html$/,
          use: [
            {
              loader: 'html-loader',
            },
          ],
        },
        {
          test: /\.css$/,
          use:  ['style-loader',
          {loader:'css-loader', options: { importLoaders: 1 } },
          "postcss-loader", 
          ]
        },
        { //para archivos multimedia
          test: /\.(png|svg|gif|jpg)$/,
          use: [
              {
                  loader: 'file-loader',
                  options: {
                      name: 'assets/[hash].[ext]'
                  }
              }
          ]
      }
      ],
    },
    plugins: [
      new HtmlWebpackPlugin({
        template: './public/index.html',
        filename: './index.html',
      }),
      new DotenvWebpackPlugin(),
    ],
    devServer: {
      contentBase: path.join(__dirname, 'dist'),
      compress: true,
      historyApiFallback: true, //manejo para router
      port: 3005,
    },
  };