webpack.config.prod.js

var path = require('path');
var webpack = require('webpack');
var CopyWebpackPlugin = require('copy-webpack-plugin');

module.exports = {
  entry: './src/main.jsx',
  output: {
    path: path.join(__dirname, 'public'),
    filename: 'bundle.js'
  },
  module: {
    loaders: [
      {
        test: /\.(js|jsx)$/,
        loader: ['babel-loader'],
        exclude: /node_modules/,
        query: {
          presets: ['es2015', 'react']
        }
      },
      {
        test: /\.scss$/,
        loaders: ['style-loader', 'css-loader?modules', 'sass-loader']
      }, {
        test: /\.(jpg|png)$/,
        loader: 'url-loader'
      }
    ]
  },
  plugins: [
    new CopyWebpackPlugin([
      {
        from: './src/index.html'
      }
    ]),
    new webpack.optimize.UglifyJsPlugin({
      compress: {
        warnings: false
      }
    })
  ]
}