import { Contracts } from "@swipechain/core-kernel";
export declare class Storage implements Contracts.TransactionPool.Storage {
    private readonly configuration;
    private database;
    private addTransactionStmt;
    private hasTransactionStmt;
    private getAllTransactionsStmt;
    private getOldTransactionsStmt;
    private removeTransactionStmt;
    private flushStmt;
    boot(): void;
    dispose(): void;
    addTransaction(storedTransaction: Contracts.TransactionPool.StoredTransaction): void;
    hasTransaction(id: string): boolean;
    getAllTransactions(): Iterable<Contracts.TransactionPool.StoredTransaction>;
    getOldTransactions(height: number): Iterable<Contracts.TransactionPool.StoredTransaction>;
    removeTransaction(id: string): void;
    flush(): void;
}