Add a utility function for getting the logged in username.

source/content-scripts/features/hide-votes.ts

@@ -1,5 +1,9 @@
 import {type HideVotesData} from "../../storage/exports.js";
-import {log, querySelectorAll} from "../../utilities/exports.js";
+import {
+  getLoggedInUsername,
+  log,
+  querySelectorAll,
+} from "../../utilities/exports.js";
 
 export function runHideVotesFeature(data: HideVotesData) {
   const counts = hideVotes(data);
@@ -12,9 +16,7 @@ function hideVotes(data: HideVotesData): number {
   // Get the username of the currently logged in user. When not logged in, set
   // it to "<logged out>" which isn't a valid username, so matching against it
   // will always return false. Meaning all comments are never the current user's.
-  const currentUser =
-    document.querySelector(".logged-in-user-username")?.textContent?.trim() ??
-    "<logged out>";
+  const currentUser = getLoggedInUsername() ?? "<logged out>";
 
   if (data.otherComments || data.ownComments) {
     count += hideCommentVotes(data, currentUser);

source/utilities/user.ts

@@ -4,3 +4,17 @@
 export function userIsLoggedIn(): boolean {
   return document.querySelector(".logged-in-user-username") !== null;
 }
+
+/**
+ * Get the currently logged in user's username, if they are logged in.
+ */
+export function getLoggedInUsername(): string | undefined {
+  const loggedInUsername =
+    document.querySelector<HTMLElement>(".logged-in-user-username") ??
+    undefined;
+  return (
+    loggedInUsername?.dataset.trxHideOwnUsername ??
+    loggedInUsername?.textContent ??
+    undefined
+  );
+}