How to get CSS output? about rollup-plugin-postcss HOT 4 CLOSED

// vendor.js
// css
import 'material-design-lite/dist/material.indigo-pink.min.css';

// js
import 'material-design-lite/material';
import 'firebase/firebase';

// app.js
import './styles/global.css';

import { template } from 'lodash-es';
import { Observable } from 'rxjs/Observable';
import { of } from 'rxjs/observable/of';
import { createStore } from 'redux';
import { createEpicMiddleware, combineEpics } from 'redux-observable';

console.info(template);
console.info(Observable::of(1, 2, 3));
console.info(createStore);
console.info(createEpicMiddleware);
console.info(combineEpics);