webpack.config.js

const path = require('path');

module.exports = {
  entry: './client/index.jsx',
  output: {
    filename: 'bundle.js',
    path: path.resolve(__dirname, 'public')
  },
  resolve: {
    extensions: ['.js', '.jsx']
  },
  watchOptions: {
    aggregateTimeout: 300,
    poll: 1000
  },
  mode: 'development',
  module: {
    rules: [
      {
        test: /\.css$/,
        loader: 'style-loader'
      },
      {
        test: /\.css$/,
        loader: 'css-loader',
        query: {
          modules: true,
          localIdentName: '[name]__[local]___[hash:base64:5]'
        }
      },
      { test: /\.(png|woff|woff2|eot|ttf|svg|otf)$/, loader: 'url-loader?limit=100000' },
      {
        test: /\.(js|jsx)$/,
        exclude: /(node_modules|bower_components)/,
        use: {
          loader: 'babel-loader',
          options: {
            presets: ['@babel/preset-env', '@babel/preset-react']
          }
        }
      }
    ]
  }
};