import BigNumber from 'bignumber.js';
import { Transaction } from './transaction';
import { CID } from 'multiformats/cid';
import { SKDB } from '../lib/ipfs/ipfs.interface';
export interface createBlockOpt {
    transactions: Transaction[];
}
export interface BlockHeaderData {
    parent: string;
    stateRoot: string;
    transactionsRoot: string;
    receiptsRoot: string;
    logsBloom: Uint8Array;
    difficulty: BigNumber;
    number: BigNumber;
    cuLimit: BigNumber;
    cuUsed: BigNumber;
    ts: number;
    slice: [number, number];
    extraData?: {
        [key: string]: unknown;
    };
    body: string;
}
export interface BlockBodyData {
    transactions: Transaction['hash'][];
}
export declare class Block {
    constructor(header: Omit<BlockHeaderData, 'hash'>);
    hash: string;
    header: BlockHeaderData;
    body?: BlockBodyData;
    /**
     * 创建一个新的块
     */
    /**
     * 从已有cid，读取一个区块,只包含块头，但不解析body
     */
    static fromCidOnlyHeader: (cid: string, db: SKDB) => Promise<Omit<Block, 'body'>>;
    /**
     * 从已有cid，读取一个区块,包含块头、body
     */
    static fromCid: (cid: string, db: SKDB) => Promise<Block>;
    genHash: (db: SKDB) => Promise<void>;
    /**
     * 将区块数据保存，落文件
     */
    commit: (db: SKDB) => Promise<CID>;
}