/**
 * Parse space-separated tokens to an array of strings.
 *
 * @param {string} value
 *   Space-separated tokens.
 * @returns {Array<string>}
 *   List of tokens.
 */
export function parse(value: string): Array<string>
/**
 * Serialize an array of strings as space separated-tokens.
 *
 * @param {Array<string|number>} values
 *   List of tokens.
 * @returns {string}
 *   Space-separated tokens.
 */
export function stringify(values: Array<string | number>): string