import type { BlockTracker } from '@metamask/network-controller';
import type { Hex } from '@metamask/utils';
import type { TransactionControllerMessenger } from '../TransactionController.js';
import type { TransactionMeta } from '../types.js';
/**
 * Helper class to orchestrate when to poll pending transactions.
 * Initially starts polling via a timeout chain every 2 seconds up to 5 times.
 * Following that, it will poll on every new block via the block tracker.
 */
export declare class TransactionPoller {
    #private;
    constructor({ blockTracker, chainId, messenger, }: {
        blockTracker: BlockTracker;
        chainId: Hex;
        messenger: TransactionControllerMessenger;
    });
    /**
     * Start the poller with a listener that will be called on every interval.
     *
     * @param listener - The listener to call on every interval.
     */
    start(listener: (latestBlockNumber: string) => Promise<void>): void;
    /**
     * Stop the poller.
     * Remove all timeouts and block tracker listeners.
     */
    stop(): void;
    /**
     * Notify the poller of the pending transactions being monitored.
     * This will reset to the accelerated polling and reset the count
     * when new transactions are added or removed.
     *
     * @param pendingTransactions - The pending transactions to poll.
     */
    setPendingTransactions(pendingTransactions: TransactionMeta[]): void;
}
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