chore(frontend): fixed all eslint errors

frontend/src/pages/api/auth/Token.ts

@@ -1,17 +1,16 @@
-const token = async () => {
-  return fetch('/api/v1/auth/token', {
+const token = async () =>
+  fetch('/api/v1/auth/token', {
     method: 'POST',
     headers: {
       'Content-Type': 'application/json'
     },
     credentials: 'include'
   }).then(async (res) => {
-    if (res.status == 200) {
+    if (res.status === 200) {
       return (await res.json()).token;
-    } else {
-      console.log('Getting a new token failed');
     }
+    console.log('Getting a new token failed');
+    return undefined;
   });
-};
 
 export default token;