webpack.prod.config.js

const webpack = require('webpack');
const path = require('path');

module.exports = {
  entry: ['./src/index.js'],
  module: {
    loaders: [
      {
        test: /\.js$/,
        exclude: /node_modules/,
        loader: ['babel-loader'],
      },
      {
        test: /\.scss$/,
        use: [
          { loader: 'style-loader' },
          {
            loader: 'css-loader',
            options: {
              sourceMap: true,
            },
          },
          {
            loader: 'sass-loader',
            options: {
              sourceMap: true,
              includePaths: [path.resolve(__dirname, './src/css/game.scss')],
            },
          },
        ],
      },
    ],
  },
  resolve: {
    extensions: ['*', '.js'],
  },
  output: {
    path: path.join(__dirname, 'dist'),
    publicPath: '/',
    filename: 'bundle.js',
  },
  plugins: [
    new webpack.ProvidePlugin({
      fetch: 'imports-loader?this=>global!exports-loader?global.fetch!whatwg-fetch',
    }),
  ],
};