import type * as RDF from '@rdfjs/types';
import type { IQuadTransformer } from './IQuadTransformer';
/**
 * A quad transformer that maps BlankNodes to fragments on the subject URI,
 * based on the first subject that blank node appears with as an object.
 */
export declare class QuadTransformerBlankToFragment implements IQuadTransformer {
    private readonly mappings;
    constructor();
    transform(quad: RDF.Quad): RDF.Quad[];
}