/**
 * Validates referenced resources recursively with configurable depth limits.
 * Prevents infinite loops using circular reference detection.
 */
export interface RecursiveValidationConfig {
    enabled: boolean;
    maxDepth: number;
    validateExternal: boolean;
    validateContained: boolean;
    validateBundleEntries: boolean;
    excludeResourceTypes?: string[];
    maxReferencesPerResource?: number;
    timeoutMs?: number;
}
export interface RecursiveValidationContext {
    currentDepth: number;
    referenceChain: string[];
    validatedResources: Set<string>;
    startTime: number;
    config: RecursiveValidationConfig;
}
export interface RecursiveValidationResult {
    totalResourcesValidated: number;
    maxDepthReached: number;
    referencesFollowed: number;
    unresolvedReferences: string[];
    circularReferences: string[][];
    validationTimeMs: number;
    timedOut: boolean;
}
export declare class RecursiveReferenceValidator {
    private circularDetector;
    private defaultConfig;
    validateRecursively(resource: any, config?: Partial<RecursiveValidationConfig>, resourceFetcher?: (reference: string) => Promise<any>): Promise<RecursiveValidationResult>;
    private validateResourceRecursively;
    private processReference;
    private validateResolvedReference;
    private fetchAndValidateReference;
    private createChildContext;
    estimateValidationCost(resource: any, config?: Partial<RecursiveValidationConfig>): {
        estimatedResources: number;
        estimatedReferences: number;
        estimatedTimeMs: number;
        wouldExceedLimits: boolean;
    };
    getDefaultConfig(): RecursiveValidationConfig;
    createSafeConfig(config: Partial<RecursiveValidationConfig>): RecursiveValidationConfig;
}
export declare function getRecursiveReferenceValidator(): RecursiveReferenceValidator;
export declare function resetRecursiveReferenceValidator(): void;
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