import * as AWS from 'aws-sdk';
export declare function addSnsPermission(topicArn: string, sourceArn: string, policyStatement: any): Promise<{
    $response: AWS.Response<{}, AWS.AWSError>;
}>;
export declare function getSnsPermission(topicArn: string, policyStatementToGet: any): Promise<any>;
export declare function addSnsPermissionIfNotExists(topicArn: string, sourceArn: string, policyStatement: any): Promise<any>;
export declare function subscribeToTopic(topicArn: string, protocol: string, endpoint: string): Promise<string | undefined>;