import { Version } from '@telegram-apps/types';
/**
 * @param a - first version.
 * @param b - second version.
 * @returns
 * - `1` if the version "a" is greater than "b".
 * - `0` the version "a" is equal to "b".
 * - `-1` the version "a" is lower than "b".
 */
export declare function compareVersions(a: Version, b: Version): number;