/** * A simple compatibility method for react's "act". * If @testing-library/react is already installed, we just use * their implementation - it's complete and has useful warnings. * If @testing-library/react is *not* installed, then we just assume * that the user is not testing a react application, and use a noop instead. */ declare type Callback = () => Promise | void | undefined; declare type AsyncAct = (callback: Callback) => Promise; declare type SyncAct = (callback: Callback) => void; declare let act: AsyncAct | SyncAct; export default act;