diff --git a/frontend/src/api/files.ts b/frontend/src/api/files.ts
index b0aec161..5c7e1e61 100644
--- a/frontend/src/api/files.ts
+++ b/frontend/src/api/files.ts
@@ -178,7 +178,7 @@ export function copy(items: any[], overwrite = false, rename = false) {
   return moveCopy(items, true, overwrite, rename);
 }
 
-export async function checksum(url: string, algo: ChecksumAlgs) {
+export async function checksum(url: string, algo: ChecksumAlg) {
   const data = await resourceAction(`${url}?checksum=${algo}`, "GET");
   return (await data.json()).checksums[algo];
 }
diff --git a/frontend/src/stores/clipboard.ts b/frontend/src/stores/clipboard.ts
index 23eb54b2..5ad8a775 100644
--- a/frontend/src/stores/clipboard.ts
+++ b/frontend/src/stores/clipboard.ts
@@ -2,7 +2,11 @@ import { defineStore } from "pinia";
 
 export const useClipboardStore = defineStore("clipboard", {
   // convert to a function
-  state: () => ({
+  state: (): {
+    key: string;
+    items: ClipItem[];
+    path?: string;
+  } => ({
     key: "",
     items: [],
     path: undefined,
@@ -12,11 +16,6 @@ export const useClipboardStore = defineStore("clipboard", {
   },
   actions: {
     // no context as first argument, use `this` instead
-    updateClipboard(value: any) {
-      this.key = value.key;
-      this.items = value.items;
-      this.path = value.path;
-    },
     // easily reset state using `$reset`
     resetClipboard() {
       this.$reset();
diff --git a/frontend/src/stores/file.ts b/frontend/src/stores/file.ts
index 9065daed..ca6721eb 100644
--- a/frontend/src/stores/file.ts
+++ b/frontend/src/stores/file.ts
@@ -6,7 +6,7 @@ export const useFileStore = defineStore("file", {
     req: Resource | null;
     oldReq: Resource | null;
     reload: boolean;
-    selected: any[];
+    selected: number[];
     multiple: boolean;
     isFiles: boolean;
   } => ({
diff --git a/frontend/src/stores/router.ts b/frontend/src/stores/router.ts
index 99d10db6..e598824c 100644
--- a/frontend/src/stores/router.ts
+++ b/frontend/src/stores/router.ts
@@ -1,6 +1,7 @@
 import { defineStore } from "pinia";
 
 /**
+ * Dummy store for exposing router to be used in other stores
  * @example
  *  // route: () => {
  *  //   const routerStore = useRouterStore();
diff --git a/frontend/src/types/api.d.ts b/frontend/src/types/api.d.ts
index 6412ae0d..66685e5e 100644
--- a/frontend/src/types/api.d.ts
+++ b/frontend/src/types/api.d.ts
@@ -17,9 +17,7 @@ interface TusSettings {
   chunkSize: number;
 }
 
-type ChecksumAlgs = "md5" | "sha1" | "sha256" | "sha512";
-
-type inline = any;
+type ChecksumAlg = "md5" | "sha1" | "sha256" | "sha512";
 
 interface Share {
   hash: string;
diff --git a/frontend/src/types/file.d.ts b/frontend/src/types/file.d.ts
index 6e7868d9..69eac10e 100644
--- a/frontend/src/types/file.d.ts
+++ b/frontend/src/types/file.d.ts
@@ -43,3 +43,8 @@ type DownloadFormat =
   | "tarlz4"
   | "tarsz"
   | null;
+
+interface ClipItem {
+  from: string;
+  name: string;
+}
diff --git a/frontend/src/types/utils.d.ts b/frontend/src/types/utils.d.ts
deleted file mode 100644
index 4c77acc1..00000000
--- a/frontend/src/types/utils.d.ts
+++ /dev/null
@@ -1 +0,0 @@
-type settings = any;
diff --git a/frontend/src/utils/auth.ts b/frontend/src/utils/auth.ts
index 520f4f63..538c8ee1 100644
--- a/frontend/src/utils/auth.ts
+++ b/frontend/src/utils/auth.ts
@@ -1,12 +1,12 @@
 import { useAuthStore } from "@/stores/auth";
 import router from "@/router";
-import jwt_decode from "jwt-decode";
+import jwt_decode, { JwtPayload } from "jwt-decode";
 import { baseURL } from "./constants";
 import { StatusError } from "@/api/utils";
 
 export function parseToken(token: string) {
   // falsy or malformed jwt will throw InvalidTokenError
-  const data = jwt_decode<{ [key: string]: any; user: IUser }>(token);
+  const data = jwt_decode<JwtPayload & { user: IUser }>(token);
 
   document.cookie = `auth=${token}; Path=/; SameSite=Strict;`;
 
@@ -48,7 +48,7 @@ export async function login(
   if (res.status === 200) {
     parseToken(body);
   } else {
-    throw new Error(body);
+    throw new StatusError(body, res.status);
   }
 }
 
@@ -65,7 +65,7 @@ export async function renew(jwt: string) {
   if (res.status === 200) {
     parseToken(body);
   } else {
-    throw new Error(body);
+    throw new StatusError(body, res.status);
   }
 }
 
diff --git a/frontend/src/utils/css.ts b/frontend/src/utils/css.ts
index 08855b8c..d727786b 100644
--- a/frontend/src/utils/css.ts
+++ b/frontend/src/utils/css.ts
@@ -1,4 +1,4 @@
-export default function getRule(rules: any) {
+export default function getRule(rules: string[]) {
   for (let i = 0; i < rules.length; i++) {
     rules[i] = rules[i].toLowerCase();
   }
diff --git a/frontend/src/views/files/FileListing.vue b/frontend/src/views/files/FileListing.vue
index da520a14..faed1928 100644
--- a/frontend/src/views/files/FileListing.vue
+++ b/frontend/src/views/files/FileListing.vue
@@ -535,9 +535,9 @@ export default {
         return;
       }
 
-      this.clipboardStore.updateClipboard({
-        key: key,
-        items: items,
+      this.clipboardStore.$patch({
+        key,
+        items,
         path: this.$route.path,
       });
     },