WebPack - Babel

$ yarn add -D webpack webpack-cli

$ yarn add -D babel-core babel-loader babel-preset-env

$ vi babel.config.json

{
    "presets": ["babel-preset-env"]
}

$ vi webpack.config.js

const path = require('path');

const config = {
  entry: './src/index.js',
  output: {
    path: path.resolve(__dirname, 'build'),
    filename: 'bundle.js',
  },
};

module.exports = config;

package.json

"webpack": "webpack"

$ yarn webpack

Config for node.js project