diff --git a/src/lib/twitter-client-timelines.ts b/src/lib/twitter-client-timelines.ts
index acf4d1c..d418241 100644
--- a/src/lib/twitter-client-timelines.ts
+++ b/src/lib/twitter-client-timelines.ts
@@ -388,7 +388,7 @@ export function withTimelines<TBase extends AbstractConstructor<TwitterClientBas
                 queryId,
                 pageCount,
                 hasCursor: Boolean(pageCursor),
-                includeCount: Object.prototype.hasOwnProperty.call(variables, 'count'),
+                includeCount: Object.hasOwn(variables, 'count'),
               });
               const response = await this.fetchWithRetry(url, {
                 method: 'GET',
diff --git a/tests/commands.bookmarks.test.ts b/tests/commands.bookmarks.test.ts
index 2d67487..177edb1 100644
--- a/tests/commands.bookmarks.test.ts
+++ b/tests/commands.bookmarks.test.ts
@@ -17,11 +17,9 @@ describe('bookmarks command', () => {
     } as unknown as CliContext;
 
     registerBookmarksCommand(program, ctx);
-    const exitSpy = vi
-      .spyOn(process, 'exit')
-      .mockImplementation(((code?: number) => {
-        throw new Error(`exit ${code}`);
-      }) as never);
+    const exitSpy = vi.spyOn(process, 'exit').mockImplementation(((code?: number) => {
+      throw new Error(`exit ${code}`);
+    }) as never);
     const errorSpy = vi.spyOn(console, 'error').mockImplementation(() => undefined);
 
     try {
diff --git a/tests/twitter-client.json-full.timelines.test.ts b/tests/twitter-client.json-full.timelines.test.ts
index f04700e..ad02021 100644
--- a/tests/twitter-client.json-full.timelines.test.ts
+++ b/tests/twitter-client.json-full.timelines.test.ts
@@ -1,6 +1,6 @@
 import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
 import { TwitterClient } from '../src/lib/twitter-client.js';
-import { validCookies, type TwitterClientPrivate } from './twitter-client-fixtures.js';
+import { type TwitterClientPrivate, validCookies } from './twitter-client-fixtures.js';
 
 const originalFetch = global.fetch;