/**
 * Update level for a version change.
 */
type UpdateLevel = 'unknown' | 'major' | 'minor' | 'patch' | 'none';
/**
 * Determine the update level between two version strings.
 *
 * @param currentVersion - Current version string.
 * @param latestVersion - Latest version string.
 * @returns Update level for the change.
 */
export declare function getUpdateLevel(currentVersion: undefined | string | null, latestVersion: undefined | string | null): UpdateLevel;
export {};