diff --git a/.eslintrc.cjs b/.eslintrc.cjs
index 8b80afa9d..91eba93cc 100644
--- a/.eslintrc.cjs
+++ b/.eslintrc.cjs
@@ -74,9 +74,9 @@ module.exports = {
         '@stylistic/keyword-spacing': 'warn',
         '@stylistic/linebreak-style': 'warn',
         '@stylistic/lines-between-class-members': ['warn', { enforce: [
-                { blankLine: 'never', prev: 'field', next: 'field' },
-                { blankLine: 'always', prev: '*', next: 'method' },
-            ] }],
+            { blankLine: 'never', prev: 'field', next: 'field' },
+            { blankLine: 'always', prev: '*', next: 'method' },
+        ] }],
         '@stylistic/max-len': ['warn', { code: 120 }],
         '@stylistic/max-statements-per-line': 'warn',
         '@stylistic/multiline-ternary': ['warn', 'always-multiline'],
diff --git a/routes/profile.vue b/routes/profile.vue
index ae9e46b61..f3c013d63 100644
--- a/routes/profile.vue
+++ b/routes/profile.vue
@@ -165,7 +165,7 @@
                         </nuxt-link>
                         <div class="list-group-item pt-3">
                             <h6>
-                                <Icon v="key"/> Authenticators
+                                <Icon v="key" /> Authenticators
                             </h6>
                             <Loading :value="authenticators">
                                 <p>
@@ -175,10 +175,12 @@
                                 </p>
                                 <ul>
                                     <template v-for="authenticator in authenticators">
-                                        <li v-if="showExpiredAuthenticators || authenticator.validUntil === null"
-                                            :class="authenticator.validUntil === null ? '' : 'small text-muted'">
+                                        <li
+                                            v-if="showExpiredAuthenticators || authenticator.validUntil === null"
+                                            :class="authenticator.validUntil === null ? '' : 'small text-muted'"
+                                        >
                                             <Tooltip :text="authenticator.type">
-                                                <Icon :v="authenticatorIcon(authenticator.type)"/>
+                                                <Icon :v="authenticatorIcon(authenticator.type)" />
                                             </Tooltip>
                                             {{ $datetime($ulidTime(authenticator.id)) }}
                                             <pre><code>{{ authenticator.payload }}</code></pre>
@@ -440,9 +442,9 @@ export default mainPronoun.extend({
                 case 'mfa_recovery':
                     return 'mobile';
                 default:
-                    return 'b:' + type;
+                    return `b:${type}`;
             }
-        }
+        },
     },
 });
 </script>
diff --git a/server/routes/admin.js b/server/routes/admin.js
index 64bf327fc..a3b46afb2 100644
--- a/server/routes/admin.js
+++ b/server/routes/admin.js
@@ -1,7 +1,7 @@
 import { Router } from 'express';
 import SQL from 'sql-template-strings';
 import avatar from '../avatar.ts';
-import {buildDict, now, shuffle, handleErrorAsync, filterObjectKeys} from '../../src/helpers.ts';
+import { buildDict, now, shuffle, handleErrorAsync, filterObjectKeys } from '../../src/helpers.ts';
 import allLocales from '../../locale/locales.ts';
 import fs from 'fs';
 import { caches } from '../../src/cache.js';
@@ -666,16 +666,16 @@ router.get('/admin/authenticators/:id', handleErrorAsync(async (req, res) => {
         SELECT * FROM authenticators
         WHERE userId = ${req.params.id}
         ORDER BY id DESC
-    `)).map(auth => {
+    `)).map((auth) => {
         delete auth.userId;
 
-        let payload = JSON.parse(auth.payload);
-        auth.payload = typeof(payload) === 'string'
+        const payload = JSON.parse(auth.payload);
+        auth.payload = typeof payload === 'string'
             ? null
             : filterObjectKeys(payload, ['id', 'email', 'name', 'instance', 'username']);
 
         return auth;
-    })
+    });
 
     return res.json(authenticators);
 }));
diff --git a/src/helpers.ts b/src/helpers.ts
index 17ea9bc94..5d3be744d 100644
--- a/src/helpers.ts
+++ b/src/helpers.ts
@@ -503,11 +503,11 @@ export const parseUserJwt = (token: string): string | JwtPayload | null => {
     }
 };
 
-export const filterObjectKeys = (obj: Record<string, any>, keysToKeep: Array<string>) => {
-    return Object.keys(obj).reduce((filteredObj: Record<string, any>, key) => {
-        if (keysToKeep.includes(key)) {
+export const filterObjectKeys = <T extends Record<string, any>, K extends keyof T>(obj: T, keysToKeep: K[]): Pick<T, K> => {
+    return keysToKeep.reduce((filteredObj, key) => {
+        if (key in obj) {
             filteredObj[key] = obj[key];
         }
         return filteredObj;
-    }, {});
-}
+    }, {} as Pick<T, K>);
+};