diff --git a/frontend/src/scripts/elements/psa.js b/frontend/src/scripts/elements/psa.ts
similarity index 65%
rename from frontend/src/scripts/elements/psa.js
rename to frontend/src/scripts/elements/psa.ts
index 7e971ab45..53e84ef40 100644
--- a/frontend/src/scripts/elements/psa.js
+++ b/frontend/src/scripts/elements/psa.ts
@@ -1,32 +1,33 @@
 import axiosInstance from "../axios-instance";
 import * as Notifications from "./notifications";
+import * as MonkeyTypes from "../types/interfaces";
 
-function clearMemory() {
+function clearMemory(): void {
   window.localStorage.setItem("confirmedPSAs", JSON.stringify([]));
 }
 
-function getMemory() {
-  return JSON.parse(window.localStorage.getItem("confirmedPSAs")) ?? [];
+function getMemory(): string[] {
+  return JSON.parse(window.localStorage.getItem("confirmedPSAs") ?? "") ?? [];
 }
 
-function setMemory(id) {
-  let list = getMemory();
+function setMemory(id: string): void {
+  const list = getMemory();
   list.push(id);
   window.localStorage.setItem("confirmedPSAs", JSON.stringify(list));
 }
 
-async function getLatest() {
-  let psa = await axiosInstance.get("/psa");
+async function getLatest(): Promise<MonkeyTypes.PSA[]> {
+  const psa = await axiosInstance.get("/psa");
   return psa.data;
 }
 
-export async function show() {
+export async function show(): Promise<void> {
   const latest = await getLatest();
   if (latest == null || latest.length == 0) {
     clearMemory();
     return;
   }
-  let localmemory = getMemory();
+  const localmemory = getMemory();
   latest.forEach((psa) => {
     if (localmemory.includes(psa._id) && psa.sticky === false) return;
     Notifications.addBanner(