webpack.config.js

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

module.exports = {
    mode: process.env.NODE_ENV || 'development',
    entry: './client/App.jsx',
    output: {
        filename: 'bundle.js',
        path: path.resolve(__dirname, 'build')
    },
    plugins: [
        new HtmlWebpackPlugin({
            template: path.join(__dirname, 'index.html'),
        }),
    ],
    module: {
        rules: [
            {
                test: /\.jsx?$/,
                exclude: /node_modules/,
                use: {
                    loader: 'babel-loader',
                    options: {
                        presets: ['@babel/preset-env', '@babel/preset-react'],
                        plugins: ['@babel/plugin-transform-runtime','@babel/transform-async-to-generator','@babel/plugin-syntax-jsx'],
                    },
                },
            }, 
            {
                test: /\.s?css$/,
                exclude: /node_modules/,
                use: ['style-loader', 'css-loader', 'sass-loader'],
            },
        ],
    },
    devServer: {
        static: {
            directory: path.resolve(__dirname, 'build'),
            publicPath: '/',
        },
        resolve: {
            extensions: ['.js', '.jsx'],
          },
        // proxy: [{
        //     context: ['/'],
        //     target: 'http://localhost:3000',
        //     changeOrigin: true,
        // }],
    },
}






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

// module.exports = {
//   mode: 'development',
//   entry: './client/components/TestApp.jsx', 
//   output: {
//     filename: 'bundle.js',
//     path: path.resolve(__dirname, 'build'),
//   },
//   plugins: [
//     new HtmlWebpackPlugin({
//       template: 'index.html', 
//     }),
//   ],
//   module: {
//     rules: [
//       {
//         test: /\.jsx?$/,
//         exclude: /node_modules/,
//         use: {
//           loader: 'babel-loader',
//           options: {
//             presets: ['@babel/preset-env', '@babel/preset-react'],
//           },
//         },
//       },
//       {
//         test: /\.s?css$/,
//         exclude: /node_modules/,
//         use: ['style-loader', 'css-loader', 'sass-loader'],
//       },
//     ],
//   },
//   devServer: {
//     static: {
//       directory: path.resolve(__dirname, 'build'), 
//       publicPath: '/',
//     },
//   },
// };