npm ERR! Invalid package name "_@babel_code-frame@7.0.0-beta.42@@babel": name cannot start with an underscore; 

npm install 时报如下所错误

```
 npm i

npm ERR! code EINVALIDPACKAGENAME
npm ERR! Invalid package name "_@babel_code-frame@7.0.0-beta.42@@babel": name cannot start with an underscore; name can only contain URL-friendly characters
```

npm 版本 6.14.1

看了下应该是这个文件的问题 https://github.com/Kim09AI/nuxt-cnode/blob/master/npm-shrinkwrap.json#L624 
