Stylelint Plugin

I'm having an issue getting `vue-cli-plugin-stylelint` to work w/ the `ssr:serve` command and I can't tell if it's something to do with this plugin or not. Previously I hadn't had any troubles using the stylelint plugin `lintStyleOnBuild` option, but after adding this ssr plugin I get an error running `vue-cli-service ssr:serve` shown below. What happens is the 'friendly-errors' plugin options being tapped into returns an undefined, but only when running the serve command; running just the lint command from cli doesn't produce any error because it's not using the webpack config. Any further info you can provide about this is much appreciated!

```
TypeError: Cannot read property 'additionalTransformers' of undefined
at forEach ...
```