import { ChainForkConfig } from "@lodestar/config";
import { BeaconBlock, BeaconBlockHeader, Epoch, Root, SignedBeaconBlock, SignedBeaconBlockHeader, Slot } from "@lodestar/types";
import { BeaconStateAllForks } from "../types.js";
/**
 * Return the block root at a recent [[slot]].
 */
export declare function getBlockRootAtSlot(state: BeaconStateAllForks, slot: Slot): Root;
/**
 * Return the block root at the start of a recent [[epoch]].
 */
export declare function getBlockRoot(state: BeaconStateAllForks, epoch: Epoch): Root;
/**
 * Return the block header corresponding to a block with ``state_root`` set to ``ZERO_HASH``.
 */
export declare function getTemporaryBlockHeader(config: ChainForkConfig, block: BeaconBlock): BeaconBlockHeader;
/**
 * Receives a BeaconBlock, and produces the corresponding BeaconBlockHeader.
 */
export declare function blockToHeader(config: ChainForkConfig, block: BeaconBlock): BeaconBlockHeader;
export declare function signedBlockToSignedHeader(config: ChainForkConfig, signedBlock: SignedBeaconBlock): SignedBeaconBlockHeader;
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