Cleanup final

src/main/updates/update-dialogs.ts

@@ -1,5 +1,5 @@
 import { BrowserWindow, dialog } from "electron";
-import type { MessageBoxOptions } from "electron";
+import type { MessageBoxOptions, MessageBoxReturnValue } from "electron";
 
 import { ReleaseUpdate } from "./update-schema";
 
@@ -41,6 +41,9 @@ export async function askToInstallUpdate(update: ReleaseUpdate, parentWindow: Br
   return result.response === 0;
 }
 
-function showMessageBox(parentWindow: BrowserWindow | null, options: MessageBoxOptions) {
+function showMessageBox(
+  parentWindow: BrowserWindow | null,
+  options: MessageBoxOptions,
+): Promise<MessageBoxReturnValue> {
   return parentWindow ? dialog.showMessageBox(parentWindow, options) : dialog.showMessageBox(options);
 }