/**
 * Semver utility functions shared between update-checker and docker-runner.
 * Kept in utils/ to avoid circular imports between those two modules.
 */
/**
 * Compare two semver strings.
 * Returns true if `latest` is newer than `current`.
 * Supports pre-release tags (e.g. 1.0.0-beta.1 < 1.0.0).
 */
export declare function isNewerVersion(current: string, latest: string): boolean;
/**
 * Validate that a version string looks like semver.
 */
export declare function isValidVersion(version: string): boolean;
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