import type { Writable } from 'node:stream';
import type * as RDF from '@rdfjs/types';
import type { IQuadSink } from './IQuadSink';
/**
 * A quad sink that writes to files using an IRI to local file system path mapping.
 */
export declare class QuadSinkFile implements IQuadSink {
    private readonly outputFormat;
    private readonly iriToPath;
    private readonly fileWriter;
    protected readonly log: boolean;
    protected readonly fileExtension?: string;
    private counter;
    constructor(options: IQuadSinkFileOptions);
    protected attemptLog(newLine?: boolean): void;
    protected getFilePath(iri: string): string;
    protected getFileStream(path: string): Promise<Writable>;
    push(iri: string, quad: RDF.Quad): Promise<void>;
    close(): Promise<void>;
}
export interface IQuadSinkFileOptions {
    /**
     * The RDF format to output, expressed as mimetype.
     */
    outputFormat: string;
    /**
     * Mapping of regular expressions to their replacements,
     * for determining the file path from a given IRI.
     * @range {json}
     */
    iriToPath: Record<string, string>;
    /**
     * Whether to log quad handling progress.
     */
    log?: boolean;
    /**
     * Optional file extension to use.
     */
    fileExtension?: string;
}