v1.7.3/firefox support uid

app/public/background.js

@@ -35,6 +35,19 @@ firebase.auth().setPersistence(firebase.auth.Auth.Persistence.LOCAL);
 const isAuthed = () => true && firebase.auth().currentUser;
 const doAuth = () => firebase.auth().signInAnonymously();
 
+let currentUser;
+
+if (!isAuthed()) doAuth();
+else currentUser = firebase.auth().currentUser;
+
+firebase.auth().onAuthStateChanged((user) => {
+  if (user) {
+    currentUser = user;
+  } else {
+    currentUser = {};
+  }
+});
+
 const fetcher = async (request, sendResponse) => {
   if (!isAuthed()) await doAuth();
   const { url, method } = request;
@@ -69,11 +82,6 @@ const fetcher = async (request, sendResponse) => {
     );
 };
 
-const sendAuth = async (sendResponse) => {
-  if (!isAuthed()) await doAuth();
-  sendResponse(firebase.auth().currentUser);
-};
-
 CHROME_OR_BROWSER.runtime.onInstalled.addListener((details) => {
   if (details.reason) {
     if (details.reason === 'install') {
@@ -119,7 +127,7 @@ CHROME_OR_BROWSER.runtime.onMessage.addListener((request, sender, sendResponse)
       fetcher(request, sendResponse);
       break;
     case 'GET_AUTH':
-      sendAuth(sendResponse);
+      sendResponse({ uid: currentUser.uid });
       break;
     case 'GET_PARTIES':
       sendResponse(