import { ApiClient } from "@lodestar/api";
import { Epoch } from "@lodestar/types";
import { Logger } from "@lodestar/utils";
import { Metrics } from "../metrics.js";
import { ISlashingProtection } from "../slashingProtection/index.js";
import { ProcessShutdownCallback, PubkeyHex } from "../types.js";
import { IClock } from "../util/index.js";
import { IndicesService } from "./indices.js";
export type DoppelgangerState = {
    nextEpochToCheck: Epoch;
    remainingEpochs: Epoch;
};
export declare enum DoppelgangerStatus {
    /** This pubkey is known to the doppelganger service and has been verified safe */
    VerifiedSafe = "VerifiedSafe",
    /** This pubkey is known to the doppelganger service but has not been verified safe */
    Unverified = "Unverified",
    /** This pubkey is unknown to the doppelganger service */
    Unknown = "Unknown",
    /** This pubkey has been detected to be active on the network */
    DoppelgangerDetected = "DoppelgangerDetected"
}
export declare class DoppelgangerService {
    private readonly logger;
    private readonly clock;
    private readonly api;
    private readonly indicesService;
    private readonly slashingProtection;
    private readonly processShutdownCallback;
    private readonly metrics;
    private readonly doppelgangerStateByPubkey;
    constructor(logger: Logger, clock: IClock, api: ApiClient, indicesService: IndicesService, slashingProtection: ISlashingProtection, processShutdownCallback: ProcessShutdownCallback, metrics: Metrics | null);
    registerValidator(pubkeyHex: PubkeyHex): Promise<void>;
    unregisterValidator(pubkeyHex: PubkeyHex): void;
    getStatus(pubKeyHex: PubkeyHex): DoppelgangerStatus;
    isDoppelgangerSafe(pubKeyHex: PubkeyHex): boolean;
    private pollLiveness;
    private getLiveness;
    private detectDoppelganger;
    private onScrapeMetrics;
}
//# sourceMappingURL=doppelgangerService.d.ts.map