webpack.chunk.config.js

const path = require('path');
const webpack = require('webpack');
const ExtractTextPlugin = require('extract-text-webpack-plugin');
const development = process.env.NODE_ENV !== 'production' ? true : false;
const AssetsPlugin = require('assets-webpack-plugin');
const CleanPlugin = require('clean-webpack-plugin');
const pkg = require('./package');
const CHUNK_FILE_NAME = '[name].[chunkhash].js';
const BUILD_DROP = path.join(__dirname, 'build');
const styles = 'style-loader!css-loader?modules!sass';

module.exports = {
  devtool: development ? 'eval' : 'source-map',
  cache: development ? true : false,
  entry: {
    vendor: Object.keys(pkg.dependencies),
    app: './src/index.js'
  },
  output: {
    chunkFilename: CHUNK_FILE_NAME,
    filename: CHUNK_FILE_NAME,
    libraryTarget: 'var',
    path: BUILD_DROP,
    publicPath: 'http://localhost:3001/',
  },
  externals: {
    'jsdom': 'window',
    'cheerio': 'window',
    'react/lib/ExecutionEnvironment': true,
    'react/lib/ReactContext': true,
  },
  resolve: {
    root: [
      // allows us to import modules as if /src was the root.
      // so I can do: import Comment from 'components/Foo'
      // instead of:  import Comment from '../components/Foo' or whatever relative path would be
      path.resolve(__dirname)
    ],
    extensions: ['','.jsx', '.scss', '.js', '.json'],
    modulesDirectories: [
      'node_modules',
      path.resolve(__dirname, './node_modules')
    ]
  },
  module: {
    loaders: [
      {
        test: /(\.js|\.jsx)$/,
        exclude: /(node_modules)/,
        loader: 'babel',
        query: {
           presets:['es2015','stage-0','react']
        }
      },
      {
        test: /(\.scss|\.css)$/,
        loader: development ? styles : ExtractTextPlugin.extract('style', 'css-loader?sourceMap&modules&importLoaders=1&localIdentName=[name]__[local]___[hash:base64:5]!sass?sourceMap!toolbox'),
        exclude: /\material.css/
      }
    ]
  },
  plugins: [
    new AssetsPlugin({
      filename: 'webpack.assets.json',
      path: BUILD_DROP,
      prettyPrint: true
    }),

    new CleanPlugin('build'),

    new webpack.optimize.CommonsChunkPlugin('vendor', CHUNK_FILE_NAME),

    new webpack.DefinePlugin({
        'process.env': {
          'NODE_ENV': JSON.stringify('production')
        }
    }),

    new ExtractTextPlugin('Goldfish.min.css',
      {
        allChunks: true
      }
    ),

    new webpack.optimize.UglifyJsPlugin({
      output: {
        comments: false
      },
      compress: {
        warnings: false
      }
    })
  ]
};