Function testLibraryUtil

src/test-utils.ts:21–26

* Get the test utility object, depending on the environment. This could be either `vi` (Vitest) or `jest`. * Type is mapped to Vitest, so we don't mix in Jest types when running in Vitest.

()

 * Type is mapped to Vitest, so we don't mix in Jest types when running in Vitest.
 */
function testLibraryUtil(): typeof vi | undefined {
  if (typeof vi !== "undefined") return vi;
  // @ts-expect-error We don't include the Jest types
  if (typeof jest !== "undefined") return jest;
  return undefined;
}

/**
 * Check if the IntersectionObserver is currently being mocked.