/// <reference types="node" />
import { Event } from '../../event';
import { Logger } from '../../logger';
import { BlockHeader, Transaction } from '../../primitives';
import { RpcClient } from '../../rpc';
export declare class RemoteChainProcessor {
    hash: Buffer | null;
    sequence: number | null;
    logger: Logger;
    nodeClient: RpcClient | null;
    maxQueueSize: number;
    onAdd: Event<[{
        header: BlockHeader;
        transactions: Transaction[];
    }]>;
    onRemove: Event<[{
        header: BlockHeader;
        transactions: Transaction[];
    }]>;
    constructor(options: {
        logger: Logger;
        nodeClient: RpcClient | null;
        head: Buffer | null;
        maxQueueSize: number;
    });
    update({ signal }?: {
        signal?: AbortSignal;
    }): Promise<{
        hashChanged: boolean;
    }>;
}
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