/**
 * Simplified memory cache handler
 */
import { EventEmitter } from '../base/event-emitter.js';
import { ISyncHandler } from '../interfaces/handler.interface.js';
import { IStatsProvider, ISyncRepository } from '../interfaces/repository.interface.js';
import type { TranslationData } from '../types/translation-data.types.js';
import type { TranslationContext, TranslationRequest, TranslationResult } from '../types/translation.types.js';
/**
 * Simple memory cache handler
 */
export declare class SyncHandler implements ISyncHandler {
    readonly name: string;
    readonly version = "1.0.0";
    readonly priority: number;
    readonly type: "memory";
    readonly enabled: boolean;
    private ttlMap;
    private ttl;
    private repository;
    private bus;
    constructor(eventEmitter: EventEmitter, repository: ISyncRepository & IStatsProvider);
    getSourceType(): 'memory' | 'storage' | 'network' | 'fallback';
    /**
     * Simple lookup implementation
     * Returns ContentUnit with both text and styles
     */
    lookup(request: TranslationRequest): TranslationResult;
    /**
     * Simple save implementation
     * Stores ContentUnit (text + styles) as JSON
     */
    save(request: TranslationRequest, result: TranslationResult): void;
    /**
     * Namespace saving implementation
     */
    saveNamespace(translations: TranslationData, context: TranslationContext): void;
    /**
     * ✅ Strategy 1: Direct cache lookup using unified pattern
     * Returns parsed ContentUnit (text + styles) or null
     */
    private tryDirectLookup;
    /**
     * ✅ Strategy 2: Namespace lookup using unified pattern
     * Returns parsed ContentUnit (text + styles) or null
     */
    private tryNamespaceLookup;
    /**
     * Helper to create consistent TranslationResult objects
     * Now includes styles from ContentUnit
     */
    private createResult;
    /**
     * Check TTL and expire if needed
     * Returns true if expired, false if still valid
     */
    private checkAndExpireTTL;
    /**
     * Set value in repository and update TTL
     */
    private setWithTTL;
    /**
     * Refresh TTL on access
     */
    private refreshTTL;
    /**
     * Get TTL information for debugging
     */
    getTTLInfo(): Record<string, {
        timestamp: number;
        age: number;
        remaining: number;
    }>;
    getEntries(): Record<string, string> | undefined;
    /**
     * Clear all entries for a specific namespace
     * Removes namespace cache entry, individual keys, and TTL entries
     */
    clearNamespace(locale: string, namespace: string): void;
    destroy(): void;
    /**
     * Direct cache set (for optimistic updates)
     * Bypasses event emission for direct cache manipulation
     * Stores as ContentUnit JSON (text + styles)
     */
    setCache(key: string, value: string, styles?: Record<string, string[]>): void;
}
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