import { ForkName, ForkSeq } from "@lodestar/params";
import { Attestation, CommitteeIndex, Epoch, IndexedAttestation, Root, Slot, ValidatorIndex } from "@lodestar/types";
import { LodestarError } from "@lodestar/utils";
import { CachedBeaconStateAllForks } from "../cache/stateCache.js";
import { IBeaconStateView } from "../stateView/interface.js";
import { EpochShuffling } from "./epochShuffling.js";
/**
 * Block root that decided the proposer shuffling for `proposalEpoch` (keys that shuffling).
 * Computed for the requested epoch, not `state.epoch`, so it is correct when `state` is one
 * epoch off the requested epoch (e.g. serving next-epoch duties from the current state).
 *
 * Returns `null` when the decision block is not in the state's past (the genesis block decides
 * its own shuffling, or it has not been produced yet); caller supplies the fallback.
 */
export declare function proposerShufflingDecisionRoot(fork: ForkName, state: IBeaconStateView, proposalEpoch: Epoch): Root | null;
/**
 * Returns the block root which decided the attester shuffling for the given `requestedEpoch`.
 * This root can be used to key that attester shuffling.
 *
 * Returns `null` on the one-off scenario where the genesis block decides its own shuffling.
 * It should be set to the latest block applied to this `state` or the genesis block root.
 */
export declare function attesterShufflingDecisionRoot(state: CachedBeaconStateAllForks, requestedEpoch: Epoch): Root | null;
export interface AttesterDuty {
    validatorIndex: ValidatorIndex;
    committeeIndex: CommitteeIndex;
    committeeLength: number;
    committeesAtSlot: number;
    validatorCommitteeIndex: number;
    slot: Slot;
}
export declare function calculateCommitteeAssignments(epochShuffling: EpochShuffling, requestedValidatorIndices: ValidatorIndex[]): Map<ValidatorIndex, AttesterDuty>;
/**
 * Return the indexed attestation corresponding to ``attestation``.
 */
export declare function getIndexedAttestation(epochShuffling: EpochShuffling, fork: ForkSeq, attestation: Attestation): IndexedAttestation;
/**
 * Return indices of validators who attestested in `attestation`
 */
export declare function getAttestingIndices(epochShuffling: EpochShuffling, fork: ForkSeq, attestation: Attestation): number[];
/**
 * Return the beacon committee at slot for index.
 */
export declare function getBeaconCommittee(epochShuffling: EpochShuffling, slot: Slot, index: CommitteeIndex): Uint32Array;
/**
 * Return a Uint32Array[] representing committees validator indices
 */
export declare function getBeaconCommittees(epochShuffling: EpochShuffling, slot: Slot, indices: CommitteeIndex[]): Uint32Array[];
export declare enum ShufflingErrorCode {
    COMMITTEE_INDEX_OUT_OF_RANGE = "SHUFFLING_ERROR_COMMITTEE_INDEX_OUT_OF_RANGE"
}
type ShufflingErrorType = {
    code: ShufflingErrorCode.COMMITTEE_INDEX_OUT_OF_RANGE;
    index: number;
    maxIndex: number;
};
export declare class ShufflingError extends LodestarError<ShufflingErrorType> {
}
export {};
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