/**
 * 7z container — read and write `.7z` archives.
 *
 * Built on the engine's LZMA: the writer stores each file in its own folder with
 * a copy or LZMA1 coder and a plain header; the reader parses the 7z structure
 * (plain or LZMA-encoded header) and decodes copy / LZMA1 / LZMA2 single-coder
 * folders — covering archives from `7z a` (LZMA2 by default), `-m0=lzma`, and
 * `-m0=copy`. Multi-coder folders (e.g. BCJ filter chains) are reported as
 * unsupported rather than silently mis-decoded.
 *
 * @example
 * ```ts
 * import { sevenZip, unSevenZip } from '@myrialabs/zipkit';
 * const archive = await sevenZip([{ name: 'a.txt', data: strToU8('hi') }]);
 * const files = await unSevenZip(archive);
 * ```
 */
/** An entry to write into a 7z archive. */
export interface SevenZipEntryInput {
    /** Path within the archive (use `/` separators). */
    name: string;
    /** File contents. */
    data: Uint8Array;
    /** Coder: `'lzma'` (default, dense) or `'copy'` (stored). */
    method?: 'lzma' | 'copy';
    /** LZMA level 0–9 (default 6). */
    level?: number;
}
/** A decoded 7z entry. */
export interface SevenZipEntry {
    /** Path within the archive. */
    name: string;
    /** File contents. */
    data: Uint8Array;
    /** Uncompressed size in bytes. */
    size: number;
}
/**
 * Create a 7z archive from `entries`. Each file is stored in its own folder
 * (non-solid) with an LZMA1 or copy coder and a plain (uncompressed) header.
 */
export declare function sevenZip(entries: SevenZipEntryInput[]): Promise<Uint8Array>;
/** Read a 7z archive into its entries. */
export declare function unSevenZip(data: Uint8Array): Promise<SevenZipEntry[]>;
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