webpack.config.js

const webpack = require('webpack');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const ExtractTextPlugin = require('extract-text-webpack-plugin');

const isProd = process.env.NODE_ENV === 'production';

const plugins = [
  new webpack.EnvironmentPlugin({NODE_ENV: 'development'}),
  new webpack.optimize.CommonsChunkPlugin({
    name: 'vendor',
    minChunks(module) {
      // this assumes your vendor imports exist in the node_modules directory
      return module.context && module.context.indexOf('node_modules') !== -1;
    },
  }),
  new HtmlWebpackPlugin({
    template: './client/index.html',
    inject: 'body'
  }),
  new ExtractTextPlugin('style.css')
];

if (isProd) {
  plugins.push(
    new webpack.LoaderOptionsPlugin({
      minimize: true,
      debug: false,
    }),
    new webpack.optimize.UglifyJsPlugin()
  );
} else {
  plugins.push(
    new webpack.HotModuleReplacementPlugin(),
    new webpack.NoEmitOnErrorsPlugin()
  );
}

module.exports = {
  entry: [
    'webpack-hot-middleware/client?reload=true',
    'react-hot-loader/patch',
    __dirname + '/client/index.js'
  ],
  output: {
    path: __dirname + '/public',
    filename: '[name].js'
  },
  module: {
    loaders: [
      {
        test: /\.js$/,
        exclude: /node_modules/,
        loader: 'babel-loader'
      },
      {
        test: /\.less$/,
        use: ExtractTextPlugin.extract({
          fallback: 'style-loader',
          use: [
            {
              loader: 'css-loader',
              options: {
                modules: true,
                importLoaders: 1,
                localIdentName: '[local]__[hash:base64:5]',
                minimize: false
              }
            },
            {
              loader: 'less-loader'
            }
          ]
        })
      }
    ]
  },
  plugins: plugins,
  devtool: isProd ? 'source-map' : 'eval-source-map',
};