/// <reference types="node" />
import { Duplex, DuplexOptions } from 'stream';
export default class StreamTransport extends Duplex {
    readonly send: any;
    private buffer;
    private canPush;
    constructor(send: any, options?: DuplexOptions);
    push(data: string): boolean;
    _read(): void;
    _write(chunk: any, encoding: string, callback: any): void;
    close(): void;
    private attemptFlush;
}