React Webpack Babel Minimal Setup (2020)

babel.config.json

{
  "presets": ["@babel/preset-react", "@babel/preset-env"]
}

bash

$ npm i --save-dev @babel/cli @babel/core @babel/polyfill @babel/preset-env @babel/preset-react babel-loader webpack webpack-cli
$ npm i --save react react-dom

webpack.config.js

const path = require('path');

module.exports = {
  mode: 'development',
  entry: './index.jsx',
  output: {
    filename: 'lib.js',
    path: path.resolve(__dirname),
  },
  module: {
    rules: [
      {
        test: /\.(js|jsx)$/,
        exclude: /node_modules/,
        use: {
          loader: "babel-loader"
        }
      }
    ]
  }
};