/**
 * Client-Side Rate Limiter
 *
 * Implements client-side rate limiting and anti-spam mechanisms
 * Uses browser storage to track request history
 */
export interface RateLimitConfig {
    maxRequests: number;
    windowMs: number;
    blockDurationMs?: number;
    storageKey?: string;
}
export interface RateLimitStatus {
    allowed: boolean;
    remaining: number;
    resetAt: number;
    blockedUntil?: number;
}
export declare class RateLimiterService {
    private config;
    private storageKey;
    private static readonly DEFAULT_STORAGE_KEY;
    constructor(config: RateLimitConfig);
    /**
     * Check if a request is allowed
     */
    checkLimit(key?: string): RateLimitStatus;
    /**
     * Record a request
     */
    recordRequest(key?: string): RateLimitStatus;
    /**
     * Reset rate limit for a key
     */
    reset(key?: string): void;
    /**
     * Reset all rate limits
     */
    resetAll(): void;
    /**
     * Get rate limit status without recording
     */
    getStatus(key?: string): RateLimitStatus;
    /**
     * Check if currently blocked
     */
    isBlocked(key?: string): boolean;
    /**
     * Get time until reset (in milliseconds)
     */
    getTimeUntilReset(key?: string): number;
    private getStorageKey;
    private getData;
    private saveData;
}
/**
 * Default rate limiters for common use cases
 */
export declare const RateLimitPresets: {
    strict: {
        maxRequests: number;
        windowMs: number;
    };
    moderate: {
        maxRequests: number;
        windowMs: number;
    };
    lenient: {
        maxRequests: number;
        windowMs: number;
    };
    payment: {
        maxRequests: number;
        windowMs: number;
        blockDurationMs: number;
    };
    registration: {
        maxRequests: number;
        windowMs: number;
        blockDurationMs: number;
    };
};
/**
 * Rate limiter decorator for methods
 */
export declare function rateLimit(limiter: RateLimiterService, key?: string): (target: any, propertyKey: string, descriptor: PropertyDescriptor) => PropertyDescriptor;
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