/**
 * Pure-Node `ar` archive + ustar tar codec — the two file formats a `.deb`
 * package is built from (`ar` as the outer container holding
 * `debian-binary` / `control.tar.gz` / `data.tar.gz`; ustar for each of
 * those `.tar.gz` members). No `dpkg-deb`/`ar`/`tar` binary dependency, so
 * `murasaki installer --target linux-*` (installer.ts's `installerLinux`,
 * the caller) cross-builds a `.deb` from any host the same way `bundle
 * --target linux-*` already does. gzip is `node:zlib`'s built-in
 * `gzipSync`/`gunzipSync` — callers compress the plain tar this module
 * writes themselves (kept separate so tests can inspect the uncompressed
 * tar structure directly).
 */
export interface ArEntry {
    name: string;
    data: Buffer;
}
/**
 * Writes a Unix `ar` archive: the `"!<arch>\n"` magic, then one 60-byte
 * header + payload per entry (payload padded to an even byte count with a
 * trailing `\n`, per the format's own alignment rule). Every murasaki
 * `.deb` has exactly three entries — `debian-binary`, `control.tar.gz`,
 * `data.tar.gz` — in that order (installer.ts's `installerLinux` assembles
 * them); this codec itself doesn't assume any particular entry set.
 */
export declare function writeArArchive(entries: ArEntry[]): Buffer;
/**
 * Reads back an `ar` archive written by `writeArArchive` — used by
 * linux-deb.test.mjs for a structural round-trip without shelling out to
 * `ar`/`dpkg-deb`.
 */
export declare function readArArchive(buffer: Buffer): ArEntry[];
export interface TarEntry {
    /** POSIX-style relative path (e.g. `"./usr/bin/app"` or `"."`). */
    path: string;
    type: 'file' | 'directory';
    mode: number;
    mtime?: number;
    data?: Buffer;
}
export interface ReadTarEntry {
    path: string;
    type: 'file' | 'directory';
    mode: number;
    mtime: number;
    data: Buffer;
}
/**
 * Writes a plain (uncompressed) ustar tar stream — POSIX IEEE 1003.1-2001
 * ustar, the format every modern `tar` reads, using the `prefix` field for
 * any path longer than 100 bytes (see `splitUstarPath`).
 */
export declare function writeUstarTar(entries: TarEntry[]): Buffer;
/**
 * Reads back a ustar tar stream written by `writeUstarTar` — used by
 * linux-deb.test.mjs for a structural round-trip without shelling out to
 * `tar`, and by installer.ts's md5sums generation (which needs the exact
 * file set/paths that ended up in `data.tar`).
 */
export declare function readUstarTar(buffer: Buffer): ReadTarEntry[];
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