import { DiscoveredPromptFile } from '../../types/prompt-source';
/**
 * Decompress a gzipped ArrayBuffer using the native DecompressionStream API.
 * Available in Node.js 18+ and all modern browsers.
 */
export declare function decompressGzip(compressed: ArrayBuffer): Promise<ArrayBuffer>;
/**
 * Minimal tar parser for read-only extraction of file entries.
 *
 * The tar format uses 512-byte header blocks followed by file data
 * aligned to 512-byte boundaries. We only need to iterate entries
 * and extract their content.
 */
export interface TarEntry {
    name: string;
    size: number;
    content: Uint8Array;
}
/**
 * Parse a tar archive (uncompressed) and yield file entries.
 */
export declare function parseTar(buffer: ArrayBuffer): TarEntry[];
/**
 * Extract .prompt files from a gzipped tarball (e.g., from npm registry).
 *
 * Looks for files matching `package/prompts/*.prompt` or `prompts/*.prompt`
 * within the tar archive.
 */
export declare function extractPromptFiles(tarballBuffer: ArrayBuffer): Promise<DiscoveredPromptFile[]>;
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