/**
 * @license Copyright (c) 2003-2026, CKSource Holding sp. z o.o. All rights reserved.
 * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-licensing-options
 */
/**
 * Checks whether the element is visible to the user in DOM:
 *
 * * connected to the root of the document,
 * * has no `display: none`,
 * * has no ancestors with `display: none`.
 *
 * **Note**: This helper does not check whether the element is hidden by cropping, overflow, etc..
 * To check that, use {@link module:utils/dom/rect~Rect} instead.
 */
export declare function isVisible(element: Text | HTMLElement | null | undefined): boolean;