old_contents: var utils = require('./utils')
  var webpack = require('webpack')
  var config = require('../config')
  var merge = require('webpack-merge')
  var baseWebpackConfig = require('./webpack.base.conf')
  var HtmlWebpackPlugin = require('html-webpack-plugin')
  var FriendlyErrorsPlugin = require('friendly-errors-webpack-plugin')
  
  // add hot-reload related code to entry chunks
  Object.keys(baseWebpackConfig.entry).forEach(function (name) {
    baseWebpackConfig.entry[name] = ['./build/dev-client'].concat(baseWebpackConfig.entry[name])
  })
  
  module.exports = merge(baseWebpackConfig, {
    module: {
      rules: utils.styleLoaders({ sourceMap: config.dev.cssSourceMap })
    },
    // cheap-module-eval-source-map is faster for development
    devtool: '#cheap-module-eval-source-map',
    plugins: [
      new webpack.DefinePlugin({
        'process.env': config.dev.env
      }),
      // https://github.com/glenjamin/webpack-hot-middleware#installation--usage
      new webpack.HotModuleReplacementPlugin(),
      new webpack.NoEmitOnErrorsPlugin(),
      // https://github.com/ampedandwired/html-webpack-plugin
      new HtmlWebpackPlugin({
        filename: 'index.html',
        template: 'index.html',
        inject: true
      }),
      new FriendlyErrorsPlugin()
    ]
  })
  
new_contents: var utils = require('./utils')
  var webpack = require('webpack')
  var config = require('../config')
  var merge = require('webpack-merge')
  var baseWebpackConfig = require('./webpack.base.conf')
  var HtmlWebpackPlugin = require('html-webpack-plugin')
  var FriendlyErrorsPlugin = require('friendly-errors-webpack-plugin')
  
  // add hot-reload related code to entry chunks
  Object.keys(baseWebpackConfig.entry).forEach(function (name) {
    baseWebpackConfig.entry[name] = ['./build/dev-client'].concat(baseWebpackConfig.entry[name])
  })
  
  module.exports = merge(baseWebpackConfig, {
    module: {
      rules: utils.styleLoaders({ sourceMap: config.dev.cssSourceMap })
    },
    // cheap-module-eval-source-map is faster for development
    devtool: '#cheap-module-eval-source-map',
    plugins: [
      new webpack.DefinePlugin({
        'process.env': config.dev.env
      }),
      // https://github.com/glenjamin/webpack-hot-middleware#installation--usage
      new webpack.HotModuleReplacementPlugin(),
      new webpack.NoEmitOnErrorsPlugin(),
      // https://github.com/ampedandwired/html-webpack-plugin
      new HtmlWebpackPlugin({
        filename: 'index.html',
        template: 'index.html',
        inject: true,
        chunks: ['app', 'vendor']
      }),
      new FriendlyErrorsPlugin()
    ]
  })
  
subject: remove fly.js