/// <reference types="node" />
import { BN } from 'ethereumjs-util';
export declare const HEADS_KEY = "heads";
/**
 * Current canonical head for light sync
 */
export declare const HEAD_HEADER_KEY = "LastHeader";
/**
 * Current canonical head for full sync
 */
export declare const HEAD_BLOCK_KEY = "LastBlock";
/**
 * Cique signers
 */
export declare const CLIQUE_SIGNERS_KEY = "CliqueSigners";
/**
 * Clique votes
 */
export declare const CLIQUE_VOTES_KEY = "CliqueVotes";
/**
 * Cique block signers (snapshot)
 */
export declare const CLIQUE_BLOCK_SIGNERS_KEY = "CliqueBlockSignersSnapshot";
/**
 * Bloom bits section count
 */
export declare const BLOOM_BITS_SECTION_COUNT = "scount";
/**
 * headerPrefix + number + hash -> header
 */
export declare const HEADER_PREFIX: Buffer;
/**
 * headerPrefix + number + hash + tdSuffix -> td
 */
export declare const TD_SUFFIX: Buffer;
/**
 * headerPrefix + number + numSuffix -> hash
 */
export declare const NUM_SUFFIX: Buffer;
/**
 * blockHashPrefix + hash -> number
 */
export declare const BLOCK_HASH_PEFIX: Buffer;
/**
 * bodyPrefix + number + hash -> block body
 */
export declare const BODY_PREFIX: Buffer;
/**
 * receiptPrfix
 */
export declare const RECEIPTS_PREFIX: Buffer;
/**
 * txLookupPrefix
 */
export declare const TX_LOOKUP_PREFIX: Buffer;
/**
 * bloomBitsIndexPrefix
 */
export declare const BLOOM_BITS_PREFIX: Buffer;
/**
 * snapshotAccountPrefix
 */
export declare const SNAP_ACCOUNT_PREFIX: Buffer;
/**
 * snapshotStoragePrefix
 */
export declare const SNAP_STORAGE_PREFIX: Buffer;
/**
 * snapshotRootKey
 */
export declare const SNAP_ROOT_KEY: Buffer;
/**
 * snapshotJournalKey
 */
export declare const SNAP_JOURNAL_KEY: Buffer;
/**
 * snapshotGeneratorKey
 */
export declare const SNAP_GENERATOR_KEY: Buffer;
/**
 * snapshotRecoveryKey
 */
export declare const SNAP_RECOVERY_KEY: Buffer;
/**
 * snapshotDisableKey
 */
export declare const SNAP_DISABLED_KEY: Buffer;
/**
 *  snapshotSyncProgress
 */
export declare const SNAP_SYNC_PROGRESS_KEY: Buffer;
/**
 * Convert BN to big endian Buffer
 */
export declare const bufBE8: (n: BN) => Buffer;
export declare const tdKey: (n: BN, hash: Buffer) => Buffer;
export declare const headerKey: (n: BN, hash: Buffer) => Buffer;
export declare const bodyKey: (n: BN, hash: Buffer) => Buffer;
export declare const numberToHashKey: (n: BN) => Buffer;
export declare const hashToNumberKey: (hash: Buffer) => Buffer;
export declare const receiptsKey: (n: BN, hash: Buffer) => Buffer;
export declare const txLookupKey: (hash: Buffer) => Buffer;
export declare const bloomBitsKey: (bit: number, section: BN, hash: Buffer) => Buffer;
export declare const snapAccountKey: (accHash: Buffer) => Buffer;
export declare const snapStorageKey: (accHash: Buffer, storageHash: Buffer) => Buffer;