/**
 * 浏览器适配器实现 - localStorage + 降级功能
 *
 * 支持框架逻辑中的"纯静态网站"场景
 * 使用 localStorage 作为 .ui18n 目录的浏览器等价物
 * 安全限制：不支持大模型API密钥直接存储
 */
import { StorageAdapter, SecurityAdapter, PerformanceAdapter, NetworkAdapter, UI18nAdapters, PerformanceReport, MemoryUsage, SystemInfo, RequestOptions, TranslationResult } from './types';
/**
 * 浏览器存储适配器 - localStorage模拟.ui18n目录
 */
export declare class BrowserStorageAdapter implements StorageAdapter {
    private readonly STORAGE_PREFIX;
    private readonly LOCALES_KEY;
    private readonly CONFIG_KEY;
    ensureUI18nDirectory(basePath?: string): Promise<string>;
    readTranslationFile(language: string, basePath?: string): Promise<Record<string, any> | null>;
    writeTranslationFile(language: string, data: Record<string, any>, basePath?: string): Promise<void>;
    listAvailableLanguages(basePath?: string): Promise<string[]>;
    readConfig(basePath?: string): Promise<Record<string, any> | null>;
    writeConfig(config: Record<string, any>, basePath?: string): Promise<void>;
    private updateAvailableLanguagesList;
    private cleanupOldTranslations;
}
/**
 * 浏览器安全适配器 - 受限的安全功能
 */
export declare class BrowserSecurityAdapter implements SecurityAdapter {
    storeApiKey(key: string, provider: string): Promise<void>;
    getApiKey(provider: string): Promise<string | null>;
    encryptData(data: string): Promise<string>;
    decryptData(encryptedData: string): Promise<string>;
    generateChecksum(data: string): Promise<string>;
    verifyChecksum(data: string, checksum: string): Promise<boolean>;
    private simpleHash;
}
/**
 * 浏览器性能适配器 - Performance API
 */
export declare class BrowserPerformanceAdapter implements PerformanceAdapter {
    private sessions;
    startProfiling(sessionId: string): Promise<void>;
    endProfiling(sessionId: string): Promise<PerformanceReport>;
    recordMetric(name: string, value: number, tags?: Record<string, string>): Promise<void>;
    getMemoryUsage(): Promise<MemoryUsage>;
    getSystemInfo(): Promise<SystemInfo>;
    private generateBrowserRecommendations;
}
/**
 * 浏览器网络适配器 - Fetch API
 */
export declare class BrowserNetworkAdapter implements NetworkAdapter {
    request(options: RequestOptions): Promise<any>;
    translateWithAI(text: string, fromLang: string, toLang: string, apiKey: string): Promise<TranslationResult>;
    checkNetworkHealth(): Promise<boolean>;
    private callUI18nCloudAPI;
}
/**
 * 浏览器适配器工厂
 */
export declare function createBrowserAdapters(): UI18nAdapters;
//# sourceMappingURL=browser.d.ts.map