diff --git a/src/public/app/services/glob.js b/src/public/app/services/glob.ts
similarity index 98%
rename from src/public/app/services/glob.js
rename to src/public/app/services/glob.ts
index f523a677e..e5f9e744d 100644
--- a/src/public/app/services/glob.js
+++ b/src/public/app/services/glob.ts
@@ -27,7 +27,7 @@ function setupGlobs() {
     window.glob.importMarkdownInline = async () => appContext.triggerCommand("importMarkdownInline");
 
     window.onerror = function (msg, url, lineNo, columnNo, error) {
-        const string = msg.toLowerCase();
+        const string = String(msg).toLowerCase();
 
         let message = "Uncaught error: ";
 
diff --git a/src/public/app/services/utils.ts b/src/public/app/services/utils.ts
index 6e2937beb..47bc2c1e9 100644
--- a/src/public/app/services/utils.ts
+++ b/src/public/app/services/utils.ts
@@ -350,7 +350,7 @@ function openHelp($button: JQuery<HTMLElement>) {
     }
 }
 
-function initHelpButtons($el: JQuery<HTMLElement>) {
+function initHelpButtons($el: JQuery<HTMLElement> | JQuery<Window>) {
     // for some reason, the .on(event, listener, handler) does not work here (e.g. Options -> Sync -> Help button)
     // so we do it manually
     $el.on("click", e => {
diff --git a/src/public/app/types.d.ts b/src/public/app/types.d.ts
index 14cc2c19a..6e2f57ccf 100644
--- a/src/public/app/types.d.ts
+++ b/src/public/app/types.d.ts
@@ -3,6 +3,9 @@ import type { BackendModule, i18n } from "i18next";
 import type { Froca } from "./services/froca-interface";
 import type { HttpBackendOptions } from "i18next-http-backend";
 import { Suggestion } from "./services/note_autocomplete.ts";
+import utils from "./services/utils.ts";
+import appContext from "./components/app_context.ts";
+import server from "./services/server.ts";
 
 interface ElectronProcess {
     type: string;
@@ -10,11 +13,11 @@ interface ElectronProcess {
 }
 
 interface CustomGlobals {
-    isDesktop: boolean;
-    isMobile: boolean;
+    isDesktop: typeof utils.isDesktop;
+    isMobile: typeof utils.isMobile;
     device: "mobile" | "desktop";
-    getComponentsByEl: (el: unknown) => unknown;
-    getHeaders: Promise<Record<string, string>>;
+    getComponentByEl: typeof appContext.getComponentByEl;
+    getHeaders: typeof server.getHeaders;
     getReferenceLinkTitle: (href: string) => Promise<string>;
     getReferenceLinkTitleSync: (href: string) => string;
     getActiveContextNote: FNote;
@@ -36,6 +39,7 @@ interface CustomGlobals {
     maxEntityChangeSyncIdAtLoad: number;
     assetPath: string;
     instanceName: string;
+    appCssNoteIds: string[];
 }
 
 type RequireMethod = (moduleName: string) => any;