我试图用react CDN脚本测试我的 React应用程序 （使用create-react-app创建）的性能，并且我做了 ‘npm
run弹出’
添加webpack外部依赖关系react和react-
dom。

我这样做，很容易在 的WebPack配置 和<script>在index.html

...
externals: {
    react: 'React',
    'react-dom':'ReactDOM'
},
...

现在，我想将其还原到以前的状态，

我正在使用 git， 并且在单独的分支中进行了此实验。

我跑了git checkout master，npm start

结果很烦人

> [email protected] start /home/code/serverSync/myapp/ui
> react-scripts start

sh: 1: react-scripts: not found

npm ERR! Linux 4.15.0-23-generic
npm ERR! argv "/usr/bin/node" "/usr/bin/npm" "start"
npm ERR! node v8.10.0
npm ERR! npm  v3.5.2
npm ERR! file sh
npm ERR! code ELIFECYCLE
npm ERR! errno ENOENT
npm ERR! syscall spawn
npm ERR! [email protected] start: `react-scripts start`
npm ERR! spawn ENOENT
npm ERR! 
npm ERR! Failed at the [email protected] start script 'react-scripts start'.
npm ERR! Make sure you have the latest version of node.js and npm installed.
npm ERR! If you do, this is most likely a problem with the myapp package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR!     react-scripts start
npm ERR! You can get information on how to open an issue for this project with:
npm ERR!     npm bugs myapp
npm ERR! Or if that isn't available, you can get their info via:
npm ERR!     npm owner ls myapp
npm ERR! There is likely additional logging output above.

npm ERR! Please include the following file with any support request:
npm ERR!     /home/code/serverSync/myapp/ui/npm-debug.log

我该如何还原到master分支？