diff --git a/background.html b/background.html
index c4983179a..442dc9360 100644
--- a/background.html
+++ b/background.html
@@ -38,6 +38,43 @@
       type="text/css"
     />
     <link href="stylesheets/manifest.css" rel="stylesheet" type="text/css" />
+    <link
+      rel="preload"
+      href="fonts/inter-v3.10/Inter-BoldItalic.woff2"
+      as="font"
+      type="font/woff2"
+    />
+    <link
+      rel="preload"
+      href="fonts/inter-v3.10/Inter-Bold.woff2"
+      as="font"
+      type="font/woff2"
+    />
+    <link
+      rel="preload"
+      href="fonts/inter-v3.10/Inter-SemiBoldItalic.woff2"
+      as="font"
+      type="font/woff2"
+    />
+    <link
+      rel="preload"
+      href="fonts/inter-v3.10/Inter-Italic.woff2"
+      as="font"
+      type="font/woff2"
+    />
+    <link
+      rel="preload"
+      href="fonts/inter-v3.10/Inter-SemiBold.woff2"
+      as="font"
+      type="font/woff2"
+    />
+    <link
+      rel="preload"
+      href="fonts/inter-v3.10/Inter-Regular.woff2"
+      as="font"
+      type="font/woff2"
+    />
+    <link rel="preload" href="images/signal-logo.svg" as="image" />
 
     <!--
     When making changes to these templates, be sure to update test/index.html as well
@@ -90,6 +127,23 @@
         {{ #summary }} <div class='summary'>{{ summary }}</div>{{ /summary }}
       </div>
     </script>
+  </head>
+  <body class="overflow-hidden">
+    <div id="app-container">
+      <div class="app-loading-screen">
+        <div class="module-title-bar-drag-area"></div>
+
+        <div class="content">
+          <div class="module-splash-screen__logo module-img--150"></div>
+          <div class="container">
+            <span class="dot"></span>
+            <span class="dot"></span>
+            <span class="dot"></span>
+          </div>
+          <div class="message"></div>
+        </div>
+      </div>
+    </div>
 
     <script type="text/javascript" src="js/components.js"></script>
     <script type="text/javascript" src="ts/set_os_class.js"></script>
@@ -99,7 +153,6 @@
     ></script>
     <script type="text/javascript" src="ts/backboneJquery.js"></script>
     <script type="text/javascript" src="js/reliable_trigger.js"></script>
-    <script type="text/javascript" src="js/database.js"></script>
 
     <script
       type="text/javascript"
@@ -122,25 +175,6 @@
       src="ts/shims/showConfirmationDialog.js"
     ></script>
 
-    <script type="text/javascript" src="js/wall_clock_listener.js"></script>
-  </head>
-  <body class="overflow-hidden">
-    <div id="app-container">
-      <div class="app-loading-screen">
-        <div class="module-title-bar-drag-area"></div>
-
-        <div class="content">
-          <div class="module-splash-screen__logo module-img--150"></div>
-          <div class="container">
-            <span class="dot"></span>
-            <span class="dot"></span>
-            <span class="dot"></span>
-          </div>
-          <div class="message"></div>
-        </div>
-      </div>
-    </div>
-
     <!--
     Note: this inline script cannot be changed without also changing the hash in
     the CSP at the top of this file
diff --git a/ts/SignalProtocolStore.ts b/ts/SignalProtocolStore.ts
index b0cb1352c..20192dc7d 100644
--- a/ts/SignalProtocolStore.ts
+++ b/ts/SignalProtocolStore.ts
@@ -186,7 +186,7 @@ export function freezeSignedPreKey(
 
 // We add a this parameter to avoid an 'implicit any' error on the next line
 const EventsMixin = function EventsMixin(this: unknown) {
-  window._.assign(this, window.Backbone.Events);
+  Object.assign(this, window.Backbone.Events);
   // eslint-disable-next-line @typescript-eslint/no-explicit-any
 } as any as typeof window.Backbone.EventsMixin;
 
diff --git a/ts/manage_full_screen_class.ts b/ts/manage_full_screen_class.ts
index 18d86dc7f..4184cbe63 100644
--- a/ts/manage_full_screen_class.ts
+++ b/ts/manage_full_screen_class.ts
@@ -1,10 +1,10 @@
 // Copyright 2021 Signal Messenger, LLC
 // SPDX-License-Identifier: AGPL-3.0-only
 
-$(document).ready(() => {
+{
   const updateFullScreenClass = (isFullScreen: boolean) => {
-    $(document.body).toggleClass('full-screen', isFullScreen);
+    document.body.classList.toggle('full-screen', isFullScreen);
   };
   updateFullScreenClass(window.isFullScreen());
   window.onFullScreenChange = updateFullScreenClass;
-});
+}
diff --git a/ts/set_os_class.ts b/ts/set_os_class.ts
index 6329bb820..5d5ba2c4f 100644
--- a/ts/set_os_class.ts
+++ b/ts/set_os_class.ts
@@ -1,7 +1,7 @@
 // Copyright 2021 Signal Messenger, LLC
 // SPDX-License-Identifier: AGPL-3.0-only
 
-$(document).ready(() => {
+{
   let className: string;
   if (window.Signal.OS.isWindows()) {
     className = 'os-windows';
@@ -13,5 +13,5 @@ $(document).ready(() => {
     throw new Error('Unexpected operating system; not applying ');
   }
 
-  $(document.body).addClass(className);
-});
+  document.body.classList.add(className);
+}
diff --git a/ts/util/lint/exceptions.json b/ts/util/lint/exceptions.json
index d6ce5aae2..1fc7b5bd5 100644
--- a/ts/util/lint/exceptions.json
+++ b/ts/util/lint/exceptions.json
@@ -7928,22 +7928,6 @@
     "reasonCategory": "falseMatch",
     "updated": "2020-12-17T18:08:07.752Z"
   },
-  {
-    "rule": "jQuery-$(",
-    "path": "ts/manage_full_screen_class.ts",
-    "line": "$(document).ready(() => {",
-    "reasonCategory": "usageTrusted",
-    "updated": "2021-01-21T23:06:13.270Z",
-    "reasonDetail": "Doesn't manipulate the DOM."
-  },
-  {
-    "rule": "jQuery-$(",
-    "path": "ts/manage_full_screen_class.ts",
-    "line": "    $(document.body).toggleClass('full-screen', isFullScreen);",
-    "reasonCategory": "usageTrusted",
-    "updated": "2021-01-21T23:06:13.270Z",
-    "reasonDetail": "Manipulates a trusted class."
-  },
   {
     "rule": "DOM-innerHTML",
     "path": "ts/quill/signal-clipboard/index.ts",
@@ -7952,22 +7936,6 @@
     "updated": "2020-11-06T17:43:07.381Z",
     "reasonDetail": "used for figuring out clipboard contents"
   },
-  {
-    "rule": "jQuery-$(",
-    "path": "ts/set_os_class.ts",
-    "line": "  $(document.body).addClass(className);",
-    "reasonCategory": "usageTrusted",
-    "updated": "2021-01-21T23:06:13.270Z",
-    "reasonDetail": "Adds a trusted CSS class."
-  },
-  {
-    "rule": "jQuery-$(",
-    "path": "ts/set_os_class.ts",
-    "line": "$(document).ready(() => {",
-    "reasonCategory": "usageTrusted",
-    "updated": "2021-01-21T23:06:13.270Z",
-    "reasonDetail": "Doesn't manipulate the DOM."
-  },
   {
     "rule": "jQuery-load(",
     "path": "ts/state/ducks/app.ts",
