import { BlockHash, Header } from '@dedot/codecs';
import { HexString } from '@dedot/utils';
import type { BlockExplorer, BlockInfo } from '../../types.js';
import type { V2Client } from '../V2Client.js';
/**
 * @name V2BlockExplorer
 * @description Block explorer implementation for V2Client using JSON-RPC v2 (ChainHead API)
 */
export declare class V2BlockExplorer implements BlockExplorer {
    #private;
    constructor(client: V2Client<any>);
    /**
     * Convert PinnedBlock to BlockInfo format
     */
    private toBlockInfo;
    /**
     * Get the best block
     */
    best(): Promise<BlockInfo>;
    /**
     * Subscribe to the best block
     */
    best(callback: (block: BlockInfo) => void): () => void;
    /**
     * Get the finalized block
     */
    finalized(): Promise<BlockInfo>;
    /**
     * Subscribe to the finalized block
     */
    finalized(callback: (block: BlockInfo) => void): () => void;
    /**
     * Get the header of a block by number or hash
     */
    header(hash: BlockHash): Promise<Header>;
    /**
     * Get the body (transactions) of a block by number or hash
     */
    body(hash: BlockHash): Promise<HexString[]>;
}