import { Credentials, WchToolsOptions } from './types';
/**
 * Checks if a username is valid, i.e. either an email or the term 'apikey'
 *
 * @param aValue -  the value to test
 * @returns true if the name is valid, else false
 */
export declare function isValidUserName(aValue: any): aValue is string;
/**
 * Checks if a password is valid
 *
 * @param aValue -  the value to test
 * @returns true if the password is valid, else false
 */
export declare function isValidPassword(aValue: any): aValue is string;
/**
 * Checks if the url is syntactically a valid URL
 *
 * @param aValue -  the value
 * @returns true if the value is a valid URL, else false
 */
export declare function isValidUrl(aValue: any): aValue is string;
export declare function isValidEmail(aValue: any): aValue is string;
/**
 * Checks if the URL is a valid WCH API URL by making a test call
 *
 * @param aUrl -  the URL to test
 *
 * @returns true if the URL is valid, else false
 */
export declare function isValidApiUrl(aValue: any): Promise<boolean>;
/**
 * Tests if the credentials are valid, this is the case if the object exists, the username is valid
 * and if the password exists and is not empty
 *
 * @param aCred - the credentials object
 * @param aOptions -  debugging options
 *
 * @returns true if the credentials are valid, else false
 */
export declare function isValidCredentials(aCred: any): aCred is Credentials;
/**
 * Validates the credentials by trying to login
 *
 * @param aCredentials -  the credentials
 * @returns true if the credentials were correct, else false
 */
export declare function isValidWchToolsOptions(aCredentials: WchToolsOptions): Promise<boolean>;