/**
 * Rate Limiter Errors - SMI-1013, SMI-1189
 *
 * Error classes for rate limiting queue functionality.
 */
/**
 * Error thrown when queue timeout is exceeded (SMI-1013)
 */
export declare class RateLimitQueueTimeoutError extends Error {
    readonly key: string;
    readonly timeoutMs: number;
    constructor(key: string, timeoutMs: number);
}
/**
 * Error thrown when queue is full (SMI-1013)
 */
export declare class RateLimitQueueFullError extends Error {
    readonly key: string;
    readonly maxQueueSize: number;
    constructor(key: string, maxQueueSize: number);
}
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