/**
 * Background Sync
 *
 * Non-blocking background synchronization for:
 * - Memory persistence
 * - Pattern learning
 * - Context files
 */
export interface SyncConfig {
    enabled: boolean;
    interval: number;
    items: SyncItem[];
    onSync?: (item: SyncItem, success: boolean) => void;
}
export type SyncItem = 'memory' | 'patterns' | 'context';
export interface SyncStats {
    lastSync: string | null;
    itemsSynced: number;
    totalSyncs: number;
    errors: number;
}
export declare class BackgroundSync {
    private config;
    private timer;
    private stats;
    private running;
    constructor(config?: Partial<SyncConfig>);
    /**
     * Start background sync
     */
    start(): void;
    /**
     * Stop background sync
     */
    stop(): void;
    /**
     * Run sync now (blocking)
     */
    syncNow(): Promise<void>;
    /**
     * Get sync statistics
     */
    getStats(): SyncStats & {
        running: boolean;
    };
    /**
     * Update configuration
     */
    updateConfig(config: Partial<SyncConfig>): void;
    /**
     * Add item to sync list
     */
    addItem(item: SyncItem): void;
    /**
     * Remove item from sync list
     */
    removeItem(item: SyncItem): void;
    private syncItem;
}
export declare function getBackgroundSync(config?: Partial<SyncConfig>): BackgroundSync;