/**
 * Version Management Module
 *
 * Handles version checking, updates, and server restart functionality.
 */
export interface VersionInfo {
    currentVersion: string;
    latestVersion: string | null;
    updateAvailable: boolean;
    checkedAt: string;
    cacheHit: boolean;
}
export interface UpdateResult {
    success: boolean;
    previousVersion: string;
    newVersion: string | null;
    error?: string;
    requiresRestart: boolean;
}
/**
 * Get current installed version from package.json
 */
export declare function getCurrentVersion(): string;
/**
 * Check npm registry for latest version (with caching)
 */
export declare function checkForUpdates(forceRefresh?: boolean): Promise<VersionInfo>;
/**
 * Perform npm update (runs in background)
 */
export declare function performUpdate(): Promise<UpdateResult>;
/**
 * Schedule server restart (with delay for client notification)
 */
export declare function scheduleRestart(delayMs?: number): void;
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