[3313] Error in installation notice when adding style language that isn't installed

Version

v1.0.0

Reproduction link

http://vuejs.org

Steps to reproduce

• $ vue init nuxt-community/starter-template <project-name>
• Install and npm run dev
• Set style attr lang="scss" on first <style> block
• Return to terminal and see error message

What is expected ?

A real NPM command to install node-sass and sass-loader

What is actually happening?

To install it, you can run: npm install --save !!vue-style-loader?{"sourceMap":true}!css-loader?{"sourceMap":true,"minimize":false,"importLoaders":1,"alias":{"/assets":"/Users/kbroegg01/Projects/nuxt-demo/nuxt-demo/assets","/static":"/Users/kbroegg01/Projects/nuxt-demo/nuxt-demo/static"}}!../node_modules/vue-loader/lib/style-compiler/index?{"vue":true,"id":"data-v-02b044eb","scoped":false,"hasInlineConfig":true}!sass-loader?{"sourceMap":true}!../node_modules/vue-loader/lib/selector?type=styles&index=0!./diller.vue