/**
* @license Copyright (c) 2003-2026, CKSource Holding sp. z o.o. All rights reserved.
* For licensing, see LICENSE.md.
*/
/**
* Transforms any value to an array. If the provided value is already an array, it is returned unchanged.
*/
export declare function toArray<T>(data: T | Array<T>): Array<T>;
/**
* Extracts base URL from the provided page URL. Base URL consists of a protocol, a host, a port, and a path.
* A hash and search parts are omitted, because they would have navigated to the same page if they were set.
*/
export declare function getBaseUrl(url: string): string;
/**
* Checks, if provided string is a valid URL utilizing the HTTP or HTTPS protocols.
*/
export declare function isUrlValid(url: string): boolean;
/**
* Checks if URLs are equal after normalization.
*/
export declare function areSameUrl(firstUrl: string, secondUrl: string): boolean;