webpack.config.js

gistfile1.txt

const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const { CleanWebpackPlugin } = require('clean-webpack-plugin');

module.exports = {
  mode: 'development',
  entry: './src/index.js',
  devtool: 'inline-source-map',
  devServer: {
    contentBase: './dist',
  },
  module: {
    rules: [
      {
        test: /\.m?js$/,
        exclude: /(node_modules|bower_components)/,
        use: {
          loader: 'babel-loader',
          options: {
            presets: [[
              '@babel/preset-env',
              {
                'corejs': 3,
                'useBuiltIns': 'usage',
                'debug': true,
                'targets': [
                  'last 2 versions'
                ]
              }],
              '@babel/preset-react'
            ],
            plugins: [
              '@babel/plugin-proposal-class-properties'
            ]
          }
        }
      },
      { 
        test: /\.css$/,
        use: [
          'style-loader',
          'css-loader'
        ]
      }
    ]
  },
  plugins: [
    new CleanWebpackPlugin(),
    new HtmlWebpackPlugin({
      title: 'Development',
      template: 'src/index.html'
    }),
  ],
  output: {
    filename: '[name].bundle.js',
    path: path.resolve(__dirname, 'dist'),
    publicPath: '/react',
  },
};