import { StyleguidistConfig, SanitizedStyleguidistConfig } from '../types/StyleGuide';
/**
 * Read, parse and validate config file or passed config.
 *
 * @param {object|string} [config] All config options or config file name or nothing.
 * @param {function} [update] Change config object before running validation on it.
 * @returns {object}
 */
export default function getConfig(configParam: string | StyleguidistConfig | {
    serverPort?: string | number;
}, update?: (conf: SanitizedStyleguidistConfig | {
    serverPort?: string | number;
}) => SanitizedStyleguidistConfig): Promise<SanitizedStyleguidistConfig> | SanitizedStyleguidistConfig;