vuetify-loader: [Bug Report] Vuetify loader doesn't load components listed in external libraries

Environment

Browsers: Google Chrome, Safari 12.1.2, Safari, Mozilla Firefox OS: Mac OS 10.14.6

Steps to reproduce

Reference a library such as vuetify-daterange-picker or another library that wraps Vuetify components.

In the main.js file add.

import Vue from 'vue';
import App from './App.vue';
import VuetifyDaterangePicker from "vuetify-daterange-picker";
import "vuetify-daterange-picker/dist/vuetify-daterange-picker.css";
import vuetify from './plugins/vuetify';

Vue.use(VuetifyDaterangePicker);

new Vue({
  vuetify,
  render: h => h(App)
}).$mount('#app');

In ./plugins/vuetify add

import Vue from 'vue';
import Vuetify from 'vuetify/lib';

Vue.use(Vuetify);

export default new Vuetify({
  icons: {
    iconfont: 'mdi'
  }
});

Implement the component like

<template>
  <v-daterange v-model="range"></v-daterange>
</template>

Expected Behavior

VAppBar and VToolbarTitle are loaded in a la carte mode.

Actual Behavior

The following error is generated in this scenario.

Unknown custom element: <v-list> - did you register the component correctly? For recursive components, make sure to provide the "name" option. found in ---> <VDaterange>

Reproduction Link

Other comments

The module currently uses configureWebpack to list that vuetify/lib as external.

module.exports = {
  configureWebpack: {
    ...(process.env.NODE_ENV === 'production'
      ? {
          externals: {
            'vuetify/lib': 'vuetify/lib',
            'date-fns': 'date-fns'
          }
        }
      : {})
  }
};

To work around the error you can skip a la carte mode and import import Vuetify from 'vuetify', but this is less than ideal since you lose tree shaking.

Is there an alternative way to implement and meet the following criteria:

• Wrapping module doesn’t depend on vuetify (Peer dep only)
• Consuming app can using a la carte mode and get all of the benefits of tree shaking
• Consuming app doesn’t need to import any of the peer dependencies of the wrapping module.

Thank you so much in advance! I appreciate all of the great work you’ve put in to Vuetify. Please let me know if you need additional information.