export interface VersionInfo {
    current: string;
    latest: string | null;
    isOutdated: boolean;
}
/**
 * Gets the currently installed version of vibe-tools by searching upwards
 * for a package.json file with the name "vibe-tools".
 */
export declare function getCurrentVersion(): string;
/**
 * Gets the latest available version of vibe-tools from the NPM registry.
 * Uses `npm view vibe-tools version`.
 */
export declare function getLatestVersion(): Promise<string | null>;
/**
 * Compare two semantic version strings
 * Returns:
 * - 1 if version1 > version2
 * - 0 if version1 = version2
 * - -1 if version1 < version2
 */
export declare function compareVersions(version1: string, version2: string): number;
/**
 * Check if version1 is newer than or equal to version2
 */
export declare function isVersionNewerOrEqual(version1: string, version2: string): boolean;
/**
 * Checks if the currently installed version is outdated compared to the latest NPM version.
 * Note: This uses simple string comparison. For robust comparison (e.g., handling pre-releases),
 * a library like 'semver' would be better, but sticking to simplicity for now.
 */
export declare function checkPackageVersion(): Promise<VersionInfo>;