webpack.config.js

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

module.exports = {
  entry: [
    join(__dirname, 'src/index.js')
  ],
  output: {
    path: join(__dirname, 'docs'),
    filename: 'bundle.js'
  },
  plugins: [
    new HtmlWebpackPlugin({
      filename: 'index.html',
      template: './src/index.html'
    }),
  ],
  module: {
    rules: [{
      test: /\.(js|jsx)$/,
      exclude: /node_modules/,
      include: join(__dirname, 'src'),
      use: [{
        loader: 'babel-loader',
        options: {
          babelrc: false,
          presets: ['env', 'react']
        }
      }]
    },
    {
      test: /\.css$/,
      use: [ 'style-loader', 'css-loader' ]
    },
    {
      test: /\.png$/,
      use: [ 'file-loader']
    }]
  }
};