webpack.config.js

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

const outputDirectory = 'build';

module.exports = {
  entry: ['babel-polyfill', './src/frontend/index.js'],
  output: {
    path: path.join(__dirname, outputDirectory),
    publicPath: '/',
    filename: 'bundle.js'
  },
  module: {
    rules: [
      {
        test: /\.(js|jsx)$/,
        exclude: /node_modules/,
        use: {
          loader: 'babel-loader'
        }
      },
      {
        test: /\.css$/,
        use: ['style-loader', 'css-loader']
      },
      {
        test: /\.(jpe?g|png|gif)$/,
        use: [{
          /* inline if smaller than 10 KB, otherwise load as a file */
          loader: 'url-loader',
          options: {
            limit: 10000
          }
        }]
      },
      {
        test: /\.(eot|svg|ttf|woff2?|otf)$/,
        use: 'file-loader'
      }
    ]
  },
  resolve: {
    extensions: ['*', '.js', '.jsx']
  },
  devServer: {
    port: 3000,
    open: true,
    proxy: {
      '/api': 'http://localhost:8080'
    },
    historyApiFallback: true
  },
  plugins: [
    new CleanWebpackPlugin(),
    new HtmlWebpackPlugin({
      template: './public/index.html',
      favicon: './public/favicon.ico'
    }),
    new CopyWebpackPlugin([
      { from: './public/images', to: 'images' },
      { from: './public/locales', to: 'locales' }
    ])
  ]
};