/**
 * Utility functions for markdown processing.
 */
export declare namespace CommonMarkUtil {
    /**
     * Processes the markdown to HTML.
     *
     * @param markdownStr Input markdown
     * @param showDebugLog If true, debuglog is displayed.
     * @param options CommonMark option.
     */
    function convertToHTML(markdownStr: string, showDebugLog?: boolean, options?: any): (string | null);
    /**
     * Processes the markdown to HTML.
     *
     * @param markdownStr Input markdown
     * @param imgUrlPrefix If specified, image urls will be modified with the given prefix.
     * @param showDebugLog If true, debuglog is displayed.
     * @param options CommonMark option.
     */
    function transformToHTML(markdownStr: string, imgUrlPrefix?: (string | null), showDebugLog?: boolean, options?: any): (string | null);
    /**
     * Processes the markdown to HTML.
     *
     * @param markdownStr Input markdown
     * @param imgUrlPrefix If specified, image urls will be modified with the given prefix.
     * @param externalizeLink If true, the link will be displayed as text.
     * @param showDebugLog If true, debuglog is displayed.
     * @param options CommonMark option.
     */
    function transliterateToHTML(markdownStr: string, imgUrlPrefix?: (string | null), externalizeLink?: boolean, showDebugLog?: boolean, options?: any): (string | null);
    /**
     * Processes the markdown to HTML.
     *
     * @param markdownStr Input markdown
     * @param imgUrlPrefix If specified, image urls will be modified with the given prefix.
     * @param linkUrlPrefix If specified, links starting with pageLinkMarker will be prepended with the given prefix.
     * @param pageLinkMarker Indicator for link url modification.
     * @param removeMarker If true, the marker is removed when the prefix is prepended.
     * @param showDebugLog If true, debuglog is displayed.
     * @param options CommonMark option.
     */
    function transmuteToHTML(markdownStr: string, imgUrlPrefix?: (string | null), linkUrlPrefix?: (string | null), pageLinkMarker?: string, removeMarker?: boolean, // tbd: option to replace marker with a different string?
    showDebugLog?: boolean, options?: any): (string | null);
}