import type { TraversalStrategy } 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';
/**
 * Traverses a DAG containing UnixFS directories
 *
 * A root CID may be specified to begin traversal from, otherwise the root
 * currently being exported will be used.
 *
 * @example Begin traversal from the root being exported
 *
 * In this example, the UnixFS path `/foo/bar/baz.txt` path should be resolvable
 * beneath the `root` CID.
 *
 * ```typescript
 * import { createHelia } from 'helia'
 * import { car, UnixFSPath } from '@helia/car'
 * import { CID } from 'multiformats/cid'
 *
 * const helia = await createHelia()
 * const c = car(helia)
 * const root = CID.parse('QmRoot')
 *
 * for await (const buf of c.export(root, {
 *   traversal: new UnixFSPath('/foo/bar/baz.txt')
 * })) {
 *   // do something with `buf`
 * }
 * ```
 *
 * @example Begin traversal from a parent node
 *
 * In this example, the `root` CID should be resolvable at the UnixFS path
 * beneath `parentCID`.
 *
 * ```typescript
 * import { createHelia } from 'helia'
 * import { car, UnixFSPath } from '@helia/car'
 * import { CID } from 'multiformats/cid'
 *
 * const helia = await createHelia()
 * const c = car(helia)
 * const root = CID.parse('QmRoot')
 * const parentCID = CID.parse('QmParent')
 *
 * for await (const buf of c.export(root, {
 *   traversal: new UnixFSPath(parentCID, '/foo/bar/baz.txt')
 * })) {
 *   // do something with `buf`
 * }
 * ```
 */
export declare class UnixFSPath implements TraversalStrategy {
    private readonly root?;
    private readonly path;
    constructor(path: string);
    constructor(root: CID, path: string);
    traverse(root: CID, blockstore: Blockstore, getCodec: CodecLoader, options?: AbortOptions): AsyncGenerator<BlockView<unknown, number, number, 0 | 1>, void, undefined>;
}
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