/**
 * Fetches an npm tarball from registry.npmjs.org and extracts .d.ts / .d.mts
 * files in-memory. Uses fflate (isomorphic). No deps to inject — usable
 * from both web client and CLI.
 */
export declare class TarballFetcher {
    fetchAndExtract(packageName: string, version: string): Promise<Map<string, string>>;
    private getTarballUrl;
    private normalizeTarPath;
    private extractDtsFiles;
}
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