import { BlockHeader } from 'web3-eth';
import { ProviderManager } from './providers';
declare type GcHandlerOptions = {
    manager?: ProviderManager;
};
/**
 * This is a closure that garbage-collects pins of expired Agreements.
 *
 * When first detects an Agreement to have no funds it saves the block number at what it was detected.
 * Then after number of blocks specified for confirmations it actualy unpins the data.
 *
 * This is in order to handle case when reorg happens and the DepositFunds event is emitted in the
 * confirmation range.
 *
 * @param options
 */
export declare function collectPinsClosure(options?: GcHandlerOptions): (block: BlockHeader) => Promise<void>;
export declare function collectDirectAddresses(): () => Promise<void>;
export default function (options?: GcHandlerOptions): (block: BlockHeader) => Promise<void>;
export {};