import { TimeUnits } from '../model/enums.js';
import { Log } from '../tools/log.js';
type ReachabilityCallback = (reachable: boolean) => (void);
export declare class Reachability {
    private readonly log;
    private interval;
    private units;
    private readonly callback;
    private macAddress?;
    private networkAddress?;
    private networkAddressExpiry?;
    private arpping?;
    protected timeout?: NodeJS.Timeout;
    private _alive?;
    constructor(log: Log, host: string, interval: number | undefined, units: TimeUnits | undefined, callback: ReachabilityCallback);
    teardown(): void;
    private get alive();
    private set alive(value);
    private startInterval;
    private check;
}
export {};