import type MqttClient from './client';
import { type Timer } from './get-timer';
import type { TimerVariant } from './shared';
export default class KeepaliveManager {
private _keepalive;
private timerId;
private timer;
private destroyed;
private counter;
private client;
private _keepaliveTimeoutTimestamp;
private _intervalEvery;
get keepaliveTimeoutTimestamp(): number;
get intervalEvery(): number;
get keepalive(): number;
constructor(client: MqttClient, variant: TimerVariant | Timer);
private clear;
setKeepalive(value: number): void;
destroy(): void;
reschedule(): void;
}