supportsCookies

1/**
2 * Checks if cookies are enabled in the current environment.
3 *
4 * @returns True if cookies are supported, false otherwise.
5 */
6export function supportsCookies(): boolean {
7  if (typeof navigator === 'undefined' || typeof document === 'undefined') return false;
8
9  try {
10    // Try to set and remove a test cookie
11    document.cookie = 'cookietest=1';
12    const result = document.cookie.indexOf('cookietest=') !== -1;
13    document.cookie = 'cookietest=1; expires=Thu, 01 Jan 1970 00:00:01 GMT';
14    return result;
15  } catch {
16    return false;
17  }
18}

1test('supportsCookies - returns true when cookies are enabled', () => {
2  Object.defineProperty(document, 'cookie', {
3    writable: true,
4    value: '',
5  });
6
7  expect(supportsCookies()).toBe(true);
8});
9
10test('supportsCookies - returns false when document is undefined', () => {
11  const originalDocument = global.document;
12  // @ts-expect-error
13  delete global.document;
14  expect(supportsCookies()).toBe(false);
15  global.document = originalDocument;
16});
17
18test('supportsCookies - returns false when navigator is undefined', () => {
19  const originalNavigator = global.navigator;
20  // @ts-expect-error
21  delete global.navigator;
22  expect(supportsCookies()).toBe(false);
23  global.navigator = originalNavigator;
24});