/// <reference types="node" />
import { PacketWriteResult } from '../mqtt.packet';
import { PacketStream } from '../packet-stream';
export declare type ConnectRequestOptions = Partial<RequiredConnectRequestOptions>;
export interface RequiredConnectRequestOptions {
    protocolLevel: number;
    protocolName: string;
    clientId: string;
    keepAlive: number;
    will?: {
        topic: string;
        message: Buffer | string;
        retained?: boolean;
        qosLevel?: number;
    };
    username?: string;
    password?: Buffer | string;
    clean: boolean;
    connectDelay?: number;
    signal?: AbortSignal;
}
export declare function writeConnectPacket(stream: PacketStream, options: RequiredConnectRequestOptions): PacketWriteResult;
export declare function makeFlags(options: ConnectRequestOptions): number;