import CancelablePromise from './CancelablePromise.js';
import './Promise.js';

/**
 * Holds information about a loaded css file.
 */
interface LoadCssResult {
    /** The css file url */
    url: string;
    /** The loaded link element */
    link: HTMLLinkElement;
}
/**
 * Loads a css file and returns a Promise to support waiting for the load.
 *
 * @example
 * ```ts
 * import loadCSS from "apprt-core/load-css";
 *
 * loadCss(require.toUrl("./test.css")).then(function(result){
 *     // result.url = url of css
 *     // result.link = link created in head
 *     // css loaded
 * });
 * ```
 * @example
 * ```ts
 * import loadCSS from "apprt-core/load-css";
 *
 * loadCss([
 *     require.toUrl("./a.css"),
 *     require.toUrl("./b.css")
 * ]).then(function(results){
 *     // result[0].url = url of css
 *     // result[0].link = link created in head
 *     // css loaded
 * });
 * ```
 * @param hrefs url(s) to the css file.
 * @param timeout Time to wait for the file to be loaded (optional).
 * @returns A cancelable promise resolving the css file(s).
 */
declare function loadCss(hrefs: string[], timeout?: number): CancelablePromise<LoadCssResult[]>;
declare function loadCss(href: string, timeout?: number): CancelablePromise<LoadCssResult>;

export { loadCss as default, loadCss };
export type { LoadCssResult };