/**
 * Escapes special characters.
 *
 * @param {string} value Value to be escaped
 *
 * @return {string}
 */
export declare function regExpEscape(value: string): string;
/**
 * Serializes a JS object into a URL query string.
 *
 * @param obj Object whose properties will be serialized. A subset of
 *     ConstructorParameters<typeof URLSearchParams>.
 * @return the query string (without the '?')
 */
export declare function buildQueryString(obj: Readonly<Record<string, string | number | boolean>>): string;