/**
 * parse custome HTML element attributes to properties
 * @note  1. empty attribute will convert to true
 *        2. JSON-like string will convert to JSON
 *        3. workaround for restore property to camlCase that caused by hast-util-raw
 * @param   attrs   original attributes
 * @return  parsed properties
 */
export declare const parseElmAttrToProps: (attrs: Record<string, string>) => Record<string, any>;