initial start with tests

src/utilities.spec.ts

@@ -0,0 +1,22 @@
+import { expect, describe, it, beforeEach, vi } from "vitest"
+import { debounce } from "./utilities"
+
+describe('debounce', () => {
+    beforeEach(() => {
+        vi.useFakeTimers();
+    })
+
+    it('should run the given callback after the provided time', async () => {
+        // Arrange
+        const callback = vi.fn(() => { });
+        const delay = 1000;
+        const debounced = debounce(callback, delay);
+
+        // Act
+        debounced();
+        vi.runAllTimers();
+
+        // Assert
+        expect(callback).toHaveBeenCalled();
+    });
+});