/**
 * 客户端性能优化模块
 * 提供缓存管理、并行处理、内存优化等功能
 */
export declare class PerformanceCache<K, V> {
    private cache;
    private accessTimes;
    private maxSize;
    constructor(maxSize?: number);
    get(key: K): V | undefined;
    set(key: K, value: V): void;
    has(key: K): boolean;
    delete(key: K): boolean;
    clear(): void;
    size(): number;
    private evictLRU;
}
export declare class PerformanceTracker {
    private timers;
    private counters;
    startTimer(name: string): void;
    endTimer(name: string): number;
    increment(name: string): void;
    getCounter(name: string): number;
    reset(): void;
    getStats(): Record<string, any>;
}
export declare class BatchProcessor {
    private batchSize;
    private delay;
    constructor(batchSize?: number, delay?: number);
    processBatch<T, R>(items: T[], processor: (item: T) => Promise<R>): Promise<R[]>;
}
export declare class Debouncer {
    private timers;
    debounce(key: string, fn: () => void, delay: number): void;
    cancel(key: string): void;
    cancelAll(): void;
}
export declare class MemoryOptimizer {
    private static instance;
    private cleanupTasks;
    private intervalId;
    private constructor();
    static getInstance(): MemoryOptimizer;
    addCleanupTask(task: () => void): void;
    startPeriodicCleanup(intervalMs?: number): void;
    runCleanup(): void;
    dispose(): void;
}
export declare const globalPerformanceTracker: PerformanceTracker;
export declare const globalMemoryOptimizer: MemoryOptimizer;
export declare function measureAsync<T>(name: string, fn: () => Promise<T>): Promise<T & {
    duration: number;
}>;
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