audio messages are correctly formed and sent

src/lib/blob-helpers.js

@@ -186,7 +186,7 @@ export function fileToBase64(file) {
 export function blobToBase64(blob) {
   return new Promise((resolve, reject) => {
     const reader = new FileReader();
-    reader.onerror = (evt) => {
+    reader.onerror = _ => {
       reject(reader.error);
     };
     reader.onload = () => {

src/lib/utils.js

@@ -1,6 +1,6 @@
 // Odds and ends
 
-import Tinode from 'tinode-sdk';
+import { Tinode } from 'tinode-sdk';
 
 // Make shortcut icon appear with a green dot + show unread count in title.
 export function updateFavicon(count) {