webpack.production.config.js

var webpack = require('webpack');
var path = require('path');
var ExtractTextPlugin = require('extract-text-webpack-plugin');
var HtmlWebpackPlugin = require('html-webpack-plugin');
var CopyWebpackPlugin = require('copy-webpack-plugin');
var CleanWebpackPlugin = require('clean-webpack-plugin');


module.exports = {
  context: path.join(__dirname, "src"),
  devtool: null,
  entry: "./scripts/app.jsx",
  module: {
    loaders: [{
      test: /\.jsx?$/,
      exclude: /(node_modules|bower_components)/,
      loader: 'babel-loader',
      query: {
        presets: ['react', 'es2015', 'stage-0'],
        plugins: ['react-html-attrs', 'transform-decorators-legacy', 'transform-class-properties'],
      }
    },{
      test: /\.scss$/,
      loader: ExtractTextPlugin.extract('style', 'css!sass'),
    }]
  },
  resolve: {
    extensions: ['', '.js', '.jsx']
  },
  output: {
    path: __dirname + "/dist/",
    filename: "app.min.js"
  },
  plugins: [
    new webpack.DefinePlugin({
      'process.env': {
        NODE_ENV: JSON.stringify('production')
      }
    }),
    new CleanWebpackPlugin(['dist'], {
      root: __dirname,
      verbose: true,
      dry: false
    }),
    new CopyWebpackPlugin([
      { from: 'images/sprites.png', to: 'images' },
      { from: 'images/blend.png', to: 'images' },
      { from: 'fonts', to: 'fonts' },
      { from: 'pointer.mp3' },
    ]),
    new ExtractTextPlugin('app.min.css', {
      allChunks: true
    }),
    new HtmlWebpackPlugin({
      filename: 'index.html',
      template: 'index.html',
      favicon: 'favicon.ico'
    }),
    new webpack.optimize.DedupePlugin(),
    new webpack.optimize.OccurenceOrderPlugin(),
    new webpack.optimize.UglifyJsPlugin({
      mangle: {
          except: ['document', 'window', 'exports', 'require']
      },
      sourcemap: false
    }),
  ],
};