text: 'use strict';
  const webpack = require('webpack');
  const FriendlyErrorsPlugin = require('friendly-errors-webpack-plugin');
  let merge = require('webpack-merge');
  let baseWebpackConfig = require('./webpack.config');
  
  // add hot-reload related code to entry chunks
  Object.keys(baseWebpackConfig.entry).forEach(function (name) {
      baseWebpackConfig.entry[name] = ['./tool/dev-client'].concat(baseWebpackConfig.entry[name]);
  });
  
  /**
   * dev config
   *
   * @type {Object}
   */
  
  module.exports = merge(baseWebpackConfig, {
      // cheap-module-eval-source-map is faster for development
      devtool: '#cheap-module-eval-source-map',
      plugins: [
          new webpack.DefinePlugin({
              'process.env': {
                  'NODE_ENV': '"dev"'
              }
          }),
          // https://github.com/glenjamin/webpack-hot-middleware#installation--usage
          new webpack.HotModuleReplacementPlugin(),
          new webpack.NoEmitOnErrorsPlugin(),
          // https://github.com/ampedandwired/html-webpack-plugin
          new FriendlyErrorsPlugin()
      ]
  });
  