Webpack：'绑定未定义'

我build立应用程序与nodejs（服务器）和reactjs（客户端）..一切都好，但最近我有一些问题与webpack ..之后，我运行webpack我有一个浏览器控制台中的错误：

未捕获的ReferenceError：未定义绑定

我不知道这个问题..任何帮助？

在这里我的webpackconfiguration：

var ExtractTextPlugin = require('extract-text-webpack-plugin') var webpack = require('webpack') module.exports = { entry: [ 'babel-polyfill', './src/client/index.js' ], devtool: 'source-map', output: { path: './src/static/js/', filename: 'bundle.js' }, module: { loaders: [{ exclude: /node_modules/, loader: 'babel-loader', query: { presets: ['react', 'es2015', 'stage-1'] } }, { test: /\.scss$/, loader: ExtractTextPlugin.extract('css!sass') }, { test: /\.json$/, loader: "json-loader" }], noParse: /lie\.js$|\/leveldown\// }, node: { net: 'empty', fs: 'empty', dns: 'empty' }, resolve: { extensions: ['', '.js', '.jsx'] }, plugins: [ new ExtractTextPlugin('../css/style.css', { allChunks: true }), new webpack.ContextReplacementPlugin(/bindings$/, /^$/) ], externals: ["bindings"] }