import { Transform, type TransformCallback } from 'node:stream';
import { type IGherkinOptions } from '@cucumber/gherkin';
import type * as messages from '@cucumber/messages';
/**
 * Stream that reads Source messages and writes GherkinDocument and Pickle messages.
 */
export default class ParserMessageStream extends Transform {
    private readonly options;
    constructor(options: IGherkinOptions);
    _transform(envelope: messages.Envelope, _encoding: string, callback: TransformCallback): void;
}