@lodestar/beacon-node/lib/network/subnets/util.d.ts

A Typescript implementation of the beacon chain

import { ChainConfig } from "@lodestar/config";
import { Epoch } from "@lodestar/types";
import { NodeId } from "./interface.js";
/**
 * Spec https://github.com/ethereum/consensus-specs/blob/v1.4.0-alpha.3/specs/phase0/p2p-interface.md
 */
export declare function computeSubscribedSubnet(config: ChainConfig, nodeId: NodeId, epoch: Epoch): number[];
/**
 * Spec https://github.com/ethereum/consensus-specs/blob/v1.4.0-alpha.3/specs/phase0/p2p-interface.md
 */
export declare function computeSubscribedSubnetByIndex(config: ChainConfig, nodeId: NodeId, epoch: Epoch, index: number): number;
/**
 * Should return node_id >> (NODE_ID_BITS - int(ATTESTATION_SUBNET_PREFIX_BITS))
 * Ideally we should use bigint here but since these constants are not likely to change we can use number
 */
export declare function getNodeIdPrefix(nodeId: NodeId): number;
/**
 * Should return node_offset = node_id % EPOCHS_PER_SUBNET_SUBSCRIPTION
 * This function is safe to return number because EPOCHS_PER_SUBNET_SUBSCRIPTION is 256
 */
export declare function getNodeOffset(nodeId: NodeId): number;
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