import type { Locator } from '@playwright/test';
/**
 * Waits for all elements matching the locator to hide
 *
 * Optionally checks that the element was initially visible (wait for it to appear).
 * If the element has not become visible after the timeout (300 ms by default),
 * then it is considered that it managed to hide before that, this does not cause an error.
 *
 * @param locator Locator of elements that should hide
 * @param waitForVisible Enable checking that it is initially present
 * (if `true` - with the default timeout, if a number - with the specified one)
 */
export declare function assertElementsHidden(locator: Locator, waitForVisible?: boolean | number): Promise<void>;