/**
 * npm registry client for fetching package tarballs
 */
export declare function getCachedTarball(packageName: string, version: string): Promise<string | null>;
export declare function cacheTarball(packageName: string, version: string, data: Buffer): Promise<string>;
export interface FetchResult {
    tarballPath: string;
    fromCache: boolean;
}
/**
 * Fetch a package tarball from npm registry
 * Uses cache if available
 */
export declare function fetchPackageTarball(packageName: string, version: string): Promise<FetchResult>;
/**
 * Clear the tarball cache
 */
export declare function clearTarballCache(): Promise<void>;
/**
 * Get tarball cache status
 */
export declare function getTarballCacheStatus(): Promise<{
    cacheDir: string;
    cachedPackages: number;
    totalSize: number;
}>;
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