/**
 * @description
 * The `loadingContent` function returns a HTML string with the loading content.
 *
 * @param {object} options Loading content options.
 * @param {string} options.id Loading id.
 * @param {string} options.icon Loading icon.
 * @param {string} options.title Loading title.
 * @param {string} options.description Loading description.
 *
 * @returns {string} HTML string with the loading content.
 */
export declare function loadingContent({ id, icon, title, description }: {
    id: string;
    icon: string;
    title: string;
    description?: string;
}): string;