import { type CreateTopicCommandInput, type SNSClient } from '@aws-sdk/client-sns';
import type { STSClient } from '@aws-sdk/client-sts';
import { type Either } from '@lokalise/node-core';
import type { ExtraSNSCreationParams } from '../sns/AbstractSnsService.ts';
type AttributesResult = {
    attributes?: Record<string, string>;
};
export declare function getTopicAttributes(snsClient: SNSClient, topicArn: string): Promise<Either<'not_found', AttributesResult>>;
export declare function getSubscriptionAttributes(snsClient: SNSClient, subscriptionArn: string): Promise<Either<'not_found', AttributesResult>>;
export declare function assertTopic(snsClient: SNSClient, stsClient: STSClient, topicOptions: CreateTopicCommandInput, extraParams?: ExtraSNSCreationParams): Promise<string>;
export declare function deleteTopic(snsClient: SNSClient, stsClient: STSClient, topicName: string): Promise<void>;
export declare function deleteSubscription(client: SNSClient, subscriptionArn: string): Promise<void>;
export declare function findSubscriptionByTopicAndQueue(snsClient: SNSClient, topicArn: string, queueArn: string): Promise<import("@aws-sdk/client-sns").Subscription | undefined>;
/**
 * Calculates the size of an outgoing SNS message.
 *
 * SNS imposes a 256 KB limit on the total size of a message, which includes both the message body and any metadata (attributes).
 * This function computes the size based solely on the message body. The reserved buffer for message attributes and overhead
 * is accounted for in SNS_MESSAGE_ATTRIBUTE_BUFFER, which is subtracted from SNS_MESSAGE_HARD_LIMIT to derive SNS_MESSAGE_MAX_SIZE.
 *
 * Reference: https://docs.aws.amazon.com/sns/latest/dg/sns-message-attributes.html
 *
 * A wrapper around the equivalent function in the SQS package.
 */
export declare const calculateOutgoingMessageSize: (message: unknown) => number;
/**
 * Checks if a topic name indicates a FIFO topic (ends with .fifo)
 */
export declare function isFifoTopicName(topicName: string): boolean;
/**
 * Validates that topic name matches the FIFO configuration flag
 */
export declare function validateFifoTopicName(topicName: string, isFifoTopic: boolean): void;
export {};