import type { StructureDefinition } from './structure-definition-types';
import type { PackageDownloader } from '../package/package-downloader.js';
import type { PackageRegistryClient } from '../package/package-registry-client.js';
import type { ProfileSourcesConfig } from '../types';
export interface AutoDownloadContext {
    registryClient: PackageRegistryClient;
    packageDownloader: PackageDownloader;
    allowedPackages: string[];
    packageVersionPins?: Record<string, string>;
    packageSources: string[];
    cache: Map<string, StructureDefinition>;
    availableProfiles: Set<string>;
    /** Profile sources settings (optional - defaults to all enabled) */
    profileSourcesConfig?: ProfileSourcesConfig;
    /** FHIR version for package filtering (defaults to R4) */
    fhirVersion?: 'R4' | 'R5' | 'R6';
}
/**
 * Clear negative cache for a specific URL (for testing or manual refresh)
 */
export declare function clearNotFoundCacheEntry(url: string): void;
/**
 * Clear all caches (for testing)
 */
export declare function clearAllCaches(): void;
/**
 * Attempt to auto-download a package for a profile URL
 * Implements request deduplication and negative caching to improve performance
 */
export declare function attemptAutoDownload(url: string, context: AutoDownloadContext): Promise<StructureDefinition | null>;
/**
 * Check if a profile URL is public (eligible for auto-download)
 *
 * Returns true for any https:// URL - these can be fetched via Simplifier or direct HTTP.
 * Returns false for internal/urn:uuid: style URLs.
 */
export declare function isPublicProfile(url: string): boolean;
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