import { ApiClient } from "@lodestar/api";
import { ChainForkConfig } from "@lodestar/config";
import { IClock } from "@lodestar/state-transition";
import { Metrics } from "../metrics.js";
import { PubkeyHex } from "../types.js";
import { LoggerVc } from "../util/index.js";
import { ChainHeaderTracker } from "./chainHeaderTracker.js";
import { ValidatorEventEmitter } from "./emitter.js";
import { SyncingStatusTracker } from "./syncingStatusTracker.js";
import { ValidatorStore } from "./validatorStore.js";
export type AttestationServiceOpts = {
    afterBlockDelaySlotFraction?: number;
    distributedAggregationSelection?: boolean;
};
/**
 * Service that sets up and handles validator attester duties.
 */
export declare class AttestationService {
    private readonly logger;
    private readonly api;
    private readonly clock;
    private readonly validatorStore;
    private readonly emitter;
    private readonly metrics;
    private readonly config;
    private readonly opts?;
    private readonly dutiesService;
    constructor(logger: LoggerVc, api: ApiClient, clock: IClock, validatorStore: ValidatorStore, emitter: ValidatorEventEmitter, chainHeadTracker: ChainHeaderTracker, syncingStatusTracker: SyncingStatusTracker, metrics: Metrics | null, config: ChainForkConfig, opts?: AttestationServiceOpts | undefined);
    removeDutiesForKey(pubkey: PubkeyHex): void;
    private runAttestationTasks;
    /**
     * Performs the first step of the attesting process: downloading one `Attestation` object.
     * Beacon node's endpoint produceAttestationData return data is not dependent on committeeIndex.
     * For a validator client with many validators this allows to do a single call for all committees
     * in a slot, saving resources in both the vc and beacon node
     */
    private produceAttestation;
    /**
     * Only one `Attestation` is downloaded from the BN. It is then signed by each
     * validator and the list of individually-signed `Attestation` objects is returned to the BN.
     */
    private signAndPublishAttestations;
    /**
     * Performs the second step of the attesting process: downloading an aggregated `Attestation`,
     * converting it into a `SignedAggregateAndProof` and returning it to the BN.
     *
     * https://github.com/ethereum/eth2.0-specs/blob/v0.12.1/specs/phase0/validator.md#broadcast-aggregate
     *
     * Only one aggregated `Attestation` is downloaded from the BN. It is then signed
     * by each validator and the list of individually-signed `SignedAggregateAndProof` objects is
     * returned to the BN.
     */
    private produceAndPublishAggregates;
}
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