/**
 * Slugify
 *
 * Prepares a string for use in a url.
 *
 * @param {String} str - the string we want to slugify
 * @param {object} options - filter options
 * @param {bool} [options.requiredChangesOnly] - don't perform optional cleanup, e.g. removing extra dashes
 * @returns {String} slugified string
 */
export declare function slugify(str: string, options?: any): string;