Update clock-epoch.int.test.ts

Co-authored-by: Hanna Skryl <80118140+hanna-skryl@users.noreply.github.com>

Author: BioPhoton

packages/utils/src/lib/clock-epoch.int.test.ts

@@ -13,11 +13,11 @@ describe('epochClock', () => {
         timeOriginMs: performance.timeOrigin,
       }),
     );
-    expect(typeof c.fromEpochMs).toBe('function');
-    expect(typeof c.fromEpochUs).toBe('function');
-    expect(typeof c.fromPerfMs).toBe('function');
-    expect(typeof c.fromEntryStartTimeMs).toBe('function');
-    expect(typeof c.fromDateNowMs).toBe('function');
+    expect(c.fromEpochMs).toBeFunction();
+    expect(c.fromEpochUs).toBeFunction();
+    expect(c.fromPerfMs).toBeFunction();
+    expect(c.fromEntryStartTimeMs).toBeFunction();
+    expect(c.fromDateNowMs).toBeFunction();
   });
 
   it('should support performance clock by default for epochNowUs', () => {