export declare function sanitizeHTML(html: any): string;
/**
 * Escapes the characters that have a special meaning in HTML, so that the text can be written into an HTML string,
 * as content or as an attribute value.
 *
 * @param text The text to escape.
 * @returns The escaped text, or an empty string if no text is provided.
 */
export declare function escapeHtml(text: string): string;
/**
 * Checks whether the focus is lost to the body.
 *
 * @returns True if the focus is lost to the body, false otherwise.
 */
export declare function isFocusLost(): boolean;