webpack works now

src/views/tinode-web.jsx

@@ -3,6 +3,7 @@ import React from 'react';
 
 import 'firebase/app';
 import 'firebase/messaging';
+import { FIREBASE_INIT } from '../../firebase-init.js'
 
 import ContextMenu from '../widgets/context-menu.jsx';
 
@@ -10,6 +11,9 @@ import InfoView from './info-view.jsx';
 import MessagesView from './messages-view.jsx';
 import SidepanelView from './sidepanel-view.jsx';
 
+// Sound to play on message received.
+export const POP_SOUND = new Audio('audio/msg.mp3');
+
 export default class TinodeWeb extends React.Component {
   constructor(props) {
     super(props);