webpack.config.js

const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const CleanWebpackPlugin = require('clean-webpack-plugin');

const outputDirectory = 'dist';

module.exports = {
  entry: ['babel-polyfill', './src/client/index.js'],
  output: {
    path: path.join(__dirname, outputDirectory),
    filename: 'bundle.js'
  },
  module: {
    rules: [{
        test: /\.(js|jsx)$/,
        exclude: /node_modules/,
        use: {
          loader: 'babel-loader'
        }
      },
      {
        test: /\.s[ac]ss$/i,
        exclude: /node_modules/,
        use: ['style-loader', 'css-loader', 'sass-loader']
      },
      {
        test: /\.(png|jpg|gif|woff|woff2|eot|ttf|svg|ico)$/,
        use: [
          {
            // loads files as base64 encoded data url if image file is less than set limit
            loader: 'url-loader',
            options: {
              // if file is greater than the limit (bytes), file-loader is used as fallback
              limit: 8192,
            },
          },
        ],
      },
    ]
  },
  resolve: {
    extensions: ['*', '.js', '.jsx']
  },
  devServer: {
    port: 8080,
    open: true,
    historyApiFallback: true,
    contentBase: path.join(__dirname, 'public'),
    proxy: {
      '/api': 'http://localhost:3000',
      '/user': 'http://localhost:3000',
      '/shop': 'http://localhost:3000',
      '/public/**': 'http://localhost:3000',
    }
  },
  plugins: [
    new CleanWebpackPlugin([outputDirectory]),
    new HtmlWebpackPlugin({
      template: './public/index.html',
    })
  ]
};