import { SafeString } from "../type/type";
export declare class BzFormatUtils {
    private static indent;
    private static tab;
    private static index;
    private static pre;
    /**
     * Format HTML
     *
     * @param {SafeString} html
     * @returns {string}
     */
    static formatHTML(html: SafeString): string;
    /**
     * Unformat HTML.
     *
     * @param {SafeString} html
     * @returns {SafeString}
     */
    static unformatHTML(html: SafeString): SafeString;
    private static _formatSpace;
    private static _format;
    /**
     * Format open and close tag.
     *
     * @param {string} item
     * @param {SafeAny} p
     * @param {SafeAny} ret
     * @returns
     */
    private static _formatOpenClosetag;
}