import { ManagementCredentials } from './management';
interface ManagementConfigInput {
    managementBackend?: 'directadmin' | 'mxroute-api';
    apiServer?: string;
    apiUsername?: string;
    apiKey?: string;
    server?: string;
    daUsername?: string;
    daLoginKey?: string;
}
export declare function resolveManagementCredentials(config: ManagementConfigInput): ManagementCredentials | null;
export declare function getCreds(): ManagementCredentials;
export declare function pickDomain(creds: ManagementCredentials, domain?: string): Promise<string>;
/**
 * Validates an email address format.
 * Returns true if valid, or an error message string if invalid.
 */
export declare function validateEmail(input: string): true | string;
/**
 * Validates a domain name format.
 * Returns true if valid, or an error message string if invalid.
 */
export declare function validateDomain(input: string): true | string;
export declare function toServerHostname(server: string): string;
export declare function isDirectForwardingLoop(source: string, destinations: string): boolean;
export declare const tableChars: {
    top: string;
    'top-mid': string;
    'top-left': string;
    'top-right': string;
    bottom: string;
    'bottom-mid': string;
    'bottom-left': string;
    'bottom-right': string;
    left: string;
    'left-mid': string;
    mid: string;
    'mid-mid': string;
    right: string;
    'right-mid': string;
    middle: string;
};
export {};