import { ILanguage } from '../types/database';
/**
 * Ensures that the input is returned as a string.
 * If the input is a number, it is converted to a string.
 * If the input is a boolean, an empty string is returned.
 *
 * @param data - The input value, which can be either a number or a boolean.
 * @returns A string representing the input value, or an empty string if the input is a boolean.
 */
export declare const ensureGeo: (data: number | boolean) => string;
/**
 * Retrieves the default language setting.
 * - In a Node.js environment, it checks the `THAI_ADDRESS_UNIVERSAL` environment variable.
 * - In a web browser environment, it checks the `THAI_ADDRESS_UNIVERSAL` value in localStorage.
 * - Defaults to 'thai' if no valid setting is found.
 * @returns ILanguage - The default language ('thai' or 'eng').
 */
export declare const getDefaultLanguage: () => ILanguage;