/**
 * UI18n 错误恢复和降级策略
 * 为各框架提供统一的错误恢复机制
 */
import { SupportedLanguage } from '../types';
/**
 * 恢复策略类型
 */
export declare enum RecoveryStrategy {
    SHOW_ORIGINAL = "show_original",
    SHOW_KEY = "show_key",
    SHOW_FALLBACK = "show_fallback",
    USE_CACHED = "use_cached",
    FALLBACK_LANGUAGE = "fallback_language",
    SILENT_FAIL = "silent_fail",
    RETRY_TRANSLATION = "retry_translation"
}
/**
 * 降级级别
 */
export declare enum DegradationLevel {
    FULL = "full",
    BASIC = "basic",
    CACHE_ONLY = "cache_only",
    OFFLINE = "offline",
    ERROR = "error"
}
/**
 * 错误恢复配置
 */
export interface RecoveryConfig {
    primaryStrategy: RecoveryStrategy;
    fallbackStrategies?: RecoveryStrategy[];
    retryConfig?: {
        maxRetries: number;
        retryDelay: number;
        backoffMultiplier: number;
    };
    degradationConfig?: {
        enableDegradation: boolean;
        degradationLevel: DegradationLevel;
        autoRecovery: boolean;
    };
    cacheConfig?: {
        useCachedTranslations: boolean;
        cacheExpiry: number;
    };
}
/**
 * 恢复上下文
 */
export interface RecoveryContext {
    originalText: string;
    translationKey?: string;
    targetLanguage: SupportedLanguage;
    fallbackLanguage?: SupportedLanguage;
    error: Error;
    retryCount: number;
    timestamp: number;
}
/**
 * 恢复结果
 */
export interface RecoveryResult {
    success: boolean;
    displayText: string;
    strategy: RecoveryStrategy;
    degradationLevel: DegradationLevel;
    shouldRetry: boolean;
    nextStrategy?: RecoveryStrategy;
    metadata?: {
        isCached?: boolean;
        isOriginal?: boolean;
        isFallback?: boolean;
        languageUsed?: SupportedLanguage;
    };
}
/**
 * 默认恢复配置
 */
export declare const DEFAULT_RECOVERY_CONFIG: RecoveryConfig;
/**
 * 错误恢复管理器
 */
export declare class ErrorRecoveryManager {
    private config;
    private cache;
    constructor(config?: Partial<RecoveryConfig>);
    /**
     * 执行错误恢复
     */
    recover(context: RecoveryContext): Promise<RecoveryResult>;
    /**
     * 执行特定的恢复策略
     */
    private executeStrategy;
    /**
     * 尝试使用缓存的翻译
     */
    private tryUseCached;
    /**
     * 尝试回退语言
     */
    private tryFallbackLanguage;
    /**
     * 尝试重试翻译
     */
    private tryRetryTranslation;
    /**
     * 获取最终的备用方案
     */
    private getFinalFallback;
    /**
     * 缓存翻译结果
     */
    cacheTranslation(originalText: string, translatedText: string, language: SupportedLanguage): void;
    /**
     * 清理过期缓存
     */
    private cleanupCache;
    /**
     * 更新配置
     */
    updateConfig(newConfig: Partial<RecoveryConfig>): void;
    /**
     * 获取当前配置
     */
    getConfig(): RecoveryConfig;
    /**
     * 清理所有缓存
     */
    clearCache(): void;
    /**
     * 获取缓存统计
     */
    getCacheStats(): {
        size: number;
        entries: {
            key: string;
            timestamp: number;
            language: string;
            isExpired: boolean;
        }[];
    };
}
/**
 * 创建错误恢复管理器的便捷函数
 */
export declare function createRecoveryManager(config?: Partial<RecoveryConfig>): ErrorRecoveryManager;
/**
 * 用户操作异常的具体恢复策略
 */
export declare const USER_OPERATION_RECOVERY_CONFIG: RecoveryConfig;
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