replace a .then() with await Promise.all()

webextension/js/popup.js

@@ -72,7 +72,7 @@ const Logic = {
   _panels: {},
   _onboardingVariation: null,
 
-  init() {
+  async init() {
     // Remove browserAction "upgraded" badge when opening panel
     this.clearBrowserActionBadge();
 
@@ -81,9 +81,13 @@ const Logic = {
     // Get the onboarding variation
     const variationPromise = this.getShieldStudyVariation();
 
+    try {
+      await Promise.all([identitiesPromise, variationPromise]);
+    } catch(e) {
+      throw new Error("Failed to retrieve the identities or variation. We cannot continue. ", e.message);
+    }
+
     // Routing to the correct panel.
-    Promise.all([identitiesPromise, variationPromise])
-    .then(() => {
     // If localStorage is disabled, we don't show the onboarding.
     if (!localStorage || localStorage.getItem("onboarded4")) {
       this.showPanel(P_CONTAINERS_LIST);
@@ -96,11 +100,7 @@ const Logic = {
     } else {
       this.showPanel(P_ONBOARDING_1);
     }
-    })
 
-    .catch(() => {
-      throw new Error("Failed to retrieve the identities. We cannot continue.");
-    });
   },
 
   async clearBrowserActionBadge() {