import * as AWS from 'aws-sdk';
export declare function listHostedZones(): Promise<AWS.Route53.HostedZone[]>;
export declare function getBestMatchingHostedZone(domain: string, zones: AWS.Route53.HostedZone[]): AWS.Route53.HostedZone | undefined;
export declare function requireBestMatchingHostedZone(domain: string, zones: AWS.Route53.HostedZone[]): AWS.Route53.HostedZone;
export declare function isValidHostname(hostname: string): boolean;