ERROR in multi，Module not found：错误：React Hot Loader @ next Universal Rendering

Question

我正在使用

"webpack": "^2.4.1",
"webpack-dev-middleware": "^1.10.2",
"react-hot-loader": "next",
"webpack-hot-middleware": "^2.18.0",

这是webpack客户端配置条目

entry: {
main: [
  'react-hot-loader/patch',
  'webpack-hot-middleware/client',
  './client.js',
],
vendor,

}，

这是server / index.js

import webpackConfig from '../webpack/webpack.config.client';
const app = express();

const compiler = webpack(webpackConfig);

app.use(webpackDev(compiler, {
  noInfo: true,
  publicPath: webpackConfig.output.publicPath,
  serverSideRender: true,
}));

app.use(webpackHot(compiler));

现在，当我使用npm run build:dev && babel-node -- dist/SSR.js

运行服务器时

我收到此错误。

ERROR in multi react-hot-loader/patch webpack-hot-middleware/client ./client.js
Module not found: Error: Can't resolve './client.js' in '/app'
@ multi react-hot-loader/patch webpack-hot-middleware/client ./client.js

ERROR in multi react react-dom redux react-redux react-router-dom react-helmet axios
Module not found: Error: Can't resolve 'react' in '/app'
@ multi react react-dom redux react-redux react-router-dom react-helmet axios

ERROR in multi react react-dom redux react-redux react-router-dom react-helmet axios
Module not found: Error: Can't resolve 'react-dom' in '/app'
@ multi react react-dom redux react-redux react-router-dom react-helmet axios

ERROR in multi react react-dom redux react-redux react-router-dom react-helmet axios
Module not found: Error: Can't resolve 'redux' in '/app'
@ multi react react-dom redux react-redux react-router-dom react-helmet axios

为什么Webpack Dev中间件只尝试在“/ app”中解析包。

感谢您的帮助。