/**
 * Version Comparator
 *
 * Semantic version comparison for detecting outdated files.
 * Reuses logic from UpdateChecker for consistency.
 */
import type { UpdateType } from './types.js';
/**
 * Compare two version strings
 *
 * @param a - First version string
 * @param b - Second version string
 * @returns Negative if a < b, positive if a > b, zero if equal
 */
export declare function compareVersions(a: string, b: string): number;
/**
 * Check if a file version needs updating
 *
 * @param fileVersion - Version from the file
 * @param currentVersion - Current k0ntext version
 * @returns True if file is outdated
 */
export declare function needsUpdate(fileVersion: string, currentVersion: string): boolean;
/**
 * Get the type of update needed
 *
 * @param fileVersion - Version from the file
 * @param currentVersion - Current k0ntext version
 * @returns Type of update: 'major', 'minor', 'patch', or 'none'
 */
export declare function getUpdateType(fileVersion: string, currentVersion: string): UpdateType;
/**
 * Format update type as a human-readable string
 *
 * @param type - Update type
 * @returns Formatted string (e.g., "Major (3.0.0 → 3.1.0)")
 */
export declare function formatUpdateType(type: UpdateType, from: string, to: string): string;
/**
 * Validate a version string format
 *
 * @param version - Version string to validate
 * @returns True if valid semver format
 */
export declare function isValidVersion(version: string): boolean;
export declare const version = "3.8.0";
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