import { Consumer } from 'sqs-consumer';
import { Producer } from 'sqs-producer';
import * as SQS from 'aws-sdk/clients/sqs';
import { OnApplicationBootstrap, OnModuleDestroy } from '@nestjs/common';
import { SqsConfig } from './sqs.config';
import { QueueName } from './sqs.types';
import { Message } from './sqs.interfaces';
import { SqsMetadataScanner } from './sqs-metadata.scanner';
export declare class SqsService implements OnApplicationBootstrap, OnModuleDestroy {
    private readonly scanner;
    private readonly sqsConfig;
    readonly consumers: Map<string, Consumer>;
    readonly producers: Map<string, Producer>;
    constructor(scanner: SqsMetadataScanner, sqsConfig: SqsConfig);
    onApplicationBootstrap(): Promise<void>;
    private createConsumer;
    private createProducer;
    onModuleDestroy(): void;
    private getQueueInfo;
    purgeQueue(name: QueueName): Promise<{
        $response: import("aws-sdk").Response<{}, import("aws-sdk").AWSError>;
    }>;
    getQueueAttributes(name: QueueName): Promise<{
        [x: string]: string;
    }>;
    getProducerQueueSize(name: QueueName): Promise<number>;
    send<T = any>(name: QueueName, payload: Message<T> | Message<T>[]): Promise<SQS.SendMessageBatchResultEntryList>;
}