import { BackgroundTransactionLogger } from '../config/background/background-transaction-logger';
import { BackgroundTransactionLog } from '../config/background/background-transaction-log';
import { S3Client } from '@aws-sdk/client-s3';
export declare class S3BackgroundTransactionLogger implements BackgroundTransactionLogger {
    private cfg;
    private s3TransactionLogCacheRatchet;
    constructor(cfg: BackgroundS3TransactionLoggingConfig);
    logTransaction(txLog: BackgroundTransactionLog): Promise<void>;
    readTransactionLog(txGuid: string): Promise<BackgroundTransactionLog>;
    static validateConfig(cfg: BackgroundS3TransactionLoggingConfig): string[];
}
export interface BackgroundS3TransactionLoggingConfig {
    s3: S3Client;
    bucket: string;
    timeToLiveDays: number;
    prefix?: string;
}