import type { ModelProgressUpdate } from '../../schemas/index.js';
import type { QVACBlobBinding } from '@qvac/registry-client';
import type { AbortSignal } from 'bare-abort-controller';
import type { DownloadHooks } from './types.js';
export { DEFAULT_REGISTRY_STREAM_TIMEOUT_MS, buildRegistryClientOptions } from './registry-client-options.js';
export type { RegistryClientDownloadOptions } from './registry-client-options.js';
export declare function buildBlobBinding(meta: {
    blobCoreKey: string;
    blobBlockOffset: number;
    blobBlockLength: number;
    blobByteOffset: number;
    expectedSize: number;
    sha256Checksum: string;
}): QVACBlobBinding;
/**
 * Validate a cached file against expected size and checksum.
 */
export declare function validateCachedFile(modelPath: string, modelFileName: string, expectedSize: number, expectedChecksum?: string, hooks?: DownloadHooks): Promise<string | null>;
/**
 * Download a single file from the registry to filesystem.
 * When blobBinding is provided, uses direct blob download (skips metadata sync).
 * Otherwise falls back to metadata-based downloadModel.
 */
export declare function downloadSingleFileFromRegistry(registryPath: string, registrySource: string, modelPath: string, modelFileName: string, downloadKey: string, expectedSize: number, expectedChecksum: string, progressCallback?: (progress: ModelProgressUpdate) => void, signal?: AbortSignal, blobBinding?: QVACBlobBinding, hooks?: DownloadHooks): Promise<void>;