Basic webpack config file for React app from scratch blog post

webpack.config.js

const path = require('path');
const webpack = require('webpack');
const BrowserSyncPlugin = require('browser-sync-webpack-plugin');

module.exports = {
  entry: './src/index.js',
  mode: 'development',
  module: {
    rules: [
      {
        test: /\.(js|jsx)$/,
        exclude: /(node_modules|bower_components)/,
        loader: 'babel-loader',
        options: { presets: ['env'] },
      },
    ],
  },
  resolve: { extensions: ['*', '.js', '.jsx'] },
  output: {
    path: path.resolve(__dirname, 'dist/'),
    publicPath: '/dist/',
    filename: 'bundle.js',
  },
  devServer: {
    contentBase: path.join(__dirname, 'public/'),
    port: 3000,
    publicPath: 'http://localhost:3000/dist/',
    hotOnly: true,
  },
  plugins: [
    new webpack.HotModuleReplacementPlugin(),
    new BrowserSyncPlugin({
        host: 'localhost',
        port: 8080,
        proxy: 'http://localhost:3000/',
    }),
  ],
};