/**
 * Rate Limit Metrics Manager - SMI-730, SMI-1189
 *
 * Metrics tracking and management for rate limiting.
 */
import type { RateLimitMetrics } from './types.js';
/**
 * Manages rate limit metrics with bounds checking and cleanup
 */
export declare class MetricsManager {
    private readonly metrics;
    private cleanupInterval;
    private readonly debug;
    private readonly log;
    constructor(debug?: boolean, log?: {
        debug: (msg: string) => void;
    });
    /**
     * Start periodic cleanup of stale metrics
     */
    startCleanup(): void;
    /**
     * Stop metrics cleanup
     */
    stopCleanup(): void;
    /**
     * Clean up metrics older than METRICS_TTL_MS
     */
    private cleanupStaleMetrics;
    /**
     * Update metrics for a key with bounds checking
     */
    update(key: string, allowed: boolean, error?: boolean): void;
    /**
     * Get metrics for a specific key
     */
    get(key: string): RateLimitMetrics | undefined;
    /**
     * Get all metrics
     */
    getAll(): Map<string, RateLimitMetrics>;
    /**
     * Delete metrics for a key
     */
    delete(key: string): void;
    /**
     * Clear all metrics
     */
    clear(): void;
    /**
     * Dispose of resources
     */
    dispose(): void;
}
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