isWindows

1/**
2 * Checks if the current platform is Windows.
3 *
4 * @returns True if running on Windows, false otherwise.
5 */
6export function isWindows(): boolean {
7  if (typeof navigator === 'undefined') {
8    return false;
9  }
10
11  return /Windows/i.test(navigator.userAgent);
12}

1const originalUserAgent = navigator.userAgent;
2
3afterEach(() => {
4  Object.defineProperty(navigator, 'userAgent', {
5    value: originalUserAgent,
6    configurable: true,
7  });
8});
9
10test('returns true for Windows user agent', () => {
11  Object.defineProperty(navigator, 'userAgent', {
12    value: 'Mozilla/5.0 (Windows NT 10.0; Win64; x64)',
13    configurable: true,
14  });
15  expect(isWindows()).toBe(true);
16});
17
18test('returns false for macOS user agent', () => {
19  Object.defineProperty(navigator, 'userAgent', {
20    value: 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7)',
21    configurable: true,
22  });
23  expect(isWindows()).toBe(false);
24});
25
26test('returns false when navigator is undefined', () => {
27  const originalNavigator = globalThis.navigator;
28  delete (globalThis as any).navigator;
29
30  expect(isWindows()).toBe(false);
31
32  globalThis.navigator = originalNavigator;
33});