import type { ExportStrategy } from '../index.ts';
import type { CodecLoader } from '@helia/interface';
import type { GraphWalker, GraphWalkerComponents } from '@helia/utils';
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 SubgraphExporterInit {
    /**
     * Graph traversal strategy, defaults to breadth-first
     */
    walker?(components: GraphWalkerComponents): GraphWalker;
}
/**
 * Traverses the DAG breadth-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 SubgraphExporter implements ExportStrategy {
    private walker?;
    constructor(init?: SubgraphExporterInit);
    export(cid: CID, blockstore: Blockstore, getCodec: CodecLoader, options?: AbortOptions): AsyncGenerator<BlockView<unknown, number, number, 0 | 1>, void, undefined>;
}
//# sourceMappingURL=subgraph-exporter.d.ts.map