import { DosLimits } from './dosProtection';
/**
 * DoS protection validator
 */
export declare class DosProtectionValidator {
    private static instance;
    private limits;
    private constructor();
    static getInstance(): DosProtectionValidator;
    /**
     * Validate input size
     */
    validateInputSize(operation: string, size: number, identifier?: string): void;
    /**
     * Create timeout promise for operation
     */
    withTimeout<T>(operation: string, promise: Promise<T>, identifier?: string): Promise<T>;
    /**
     * Set custom limits for an operation
     */
    setLimits(operation: string, limits: DosLimits): void;
    /**
     * Get limits for an operation
     */
    getLimits(operation: string): DosLimits;
}
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