import BaseDiscoverer from './base';
import { DiscovererOptions } from '../../../typings/registry/discoverers';
import { Registry } from '..';
export default class Etcd3Discoverer extends BaseDiscoverer {
    private index;
    private client;
    private lastInfoSeq;
    private lastBeatSeq;
    private leaseBeat;
    private leaseInfo;
    constructor(options: DiscovererOptions);
    init(registry: Registry): void;
}