import { Writable, WritableOptions } from 'stream';
import { StringDecoder } from 'string_decoder';
/**
 * This is a writable stream that encodes data to an internal buffered string. It's pulled from Node14 docs and used as a test utility here.
 * Ex:
 * ```
 * const writer = new StringWriter({defaultEncoding: 'utf8'})
 * Readable.from(['1', '2', '3']).pipe(writer).finish(() => { console.log(writer.data) })
 * '123'
 * ```
 * See: https://nodejs.org/docs/latest-v14.x/api/stream.html#stream_decoding_buffers_in_a_writable_stream
 */
export default class StringWriter extends Writable {
    _decoder: StringDecoder;
    data: any;
    constructor(options?: WritableOptions);
    _write(chunk: any, encoding: BufferEncoding, callback: (error?: Error | null) => void): void;
    _final(callback: (error?: Error | null) => void): void;
}
export { StringWriter };