/**
 * Get the AWS Services endpoint URL's DNS suffix for a given region. A typical AWS regional service endpoint URL will
 * follow this pattern: {endpointPrefix}.{region}.{dnsSuffix}. For example, the endpoint URL for Cognito Identity in
 * us-east-1 will be cognito-identity.us-east-1.amazonaws.com. Here the DnsSuffix is `amazonaws.com`.
 *
 * @param region
 * @returns The DNS suffix
 *
 * @internal
 */
export declare const getDnsSuffix: (region: string) => string;