/**
 * Converts `value` to a string. An empty string is returned for `null`
 * and `undefined` values.
 *
 * @param {*} val The value to convert.
 * @returns {string} Returns the converted string.
 * @example
 *
 *    toString(null); //=> ''
 *    toString('test'); //=> 'test'
 *    toString([1, 2, 3]); => '1,2,3'
 */
export declare const toString: (val: any) => string;
export default toString;