/**
 * Profile-load pipeline for StructureDefinitionLoader.
 *
 * The full loadProfile() flow — pinned-canonical resolution, negative caches,
 * in-memory + DB cache checks, and the known-source fallback (local package
 * filesystem then auto-download). Extracted from structure-definition-loader.ts;
 * the loader passes its mutable caches/maps by reference so updates propagate
 * back, plus a resolvePinnedCanonical callback for its private pin map.
 */
import type { PackageDownloader } from '../package/package-downloader.js';
import type { PackageRegistryClient } from '../package/package-registry-client.js';
import type { StructureDefinition } from './structure-definition-types';
import type { ProfileSourcesConfig, ValidationSettings } from '../types';
import { type ProfileSourceContext } from '../persistence';
export interface LoadProfileContext {
    availableProfiles: Set<string>;
    packageSources: string[];
    cache: Map<string, StructureDefinition>;
    profileNotFound: Set<string>;
    dbCacheNotFound: Set<string>;
    profileLoadPromises: Map<string, Promise<StructureDefinition | null>>;
    autoDownload: boolean;
    registryClient: PackageRegistryClient;
    packageDownloader: PackageDownloader;
    allowedPackages: string[];
    packageVersionPins: Record<string, string>;
    profileSourcesConfig: ProfileSourcesConfig;
    profileSourceContext?: ProfileSourceContext;
    profileResolutionSettings?: ValidationSettings;
    resolvePinnedCanonical(url: string): string;
}
/**
 * Load a StructureDefinition by URL.
 */
export declare function loadProfile(ctx: LoadProfileContext, url: string, fhirVersion?: 'R4' | 'R5' | 'R6'): Promise<StructureDefinition | null>;
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