import type { ExportStrategy } from '../index.ts';
import type { CodecLoader } from '@helia/interface';
import type { AbortOptions } from '@libp2p/interface';
import type { Blockstore } from 'interface-blockstore';
import type { BlockView } from 'multiformats';
import type { CID } from 'multiformats/cid';
export interface UnixFSExporterOptions {
    /**
     * Include blocks that start with this offset.
     *
     * If the CID being exported is a directory, this option is ignored.
     *
     * @default 0
     */
    offset?: number;
    /**
     * Only include blocks that would include this many file bytes (exclusive,
     * inclusive of offset).
     *
     * If the CID being exported is a directory, this option is ignored.
     *
     * @default Infinity
     */
    length?: number;
    /**
     * By default an exported CAR file will include all blocks that make up a
     * directory, and the files that are stored there.
     *
     * To only include blocks that allow the initial enumeration of the directory,
     * pass `true` here
     *
     * @default false
     */
    listingOnly?: boolean;
}
/**
 * Traverses the DAG depth-first starting at the target CID and yields all
 * encountered blocks.
 *
 * Blocks linked to from the target block are traversed using codecs defined in
 * the helia config.
 */
export declare class UnixFSExporter implements ExportStrategy {
    private options?;
    constructor(options?: UnixFSExporterOptions);
    export(cid: CID, blockstore: Blockstore, getCodec: CodecLoader, options?: AbortOptions): AsyncGenerator<BlockView<unknown, number, number, 0 | 1>, void, undefined>;
}
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