import { LibraryConfig } from '../interfaces/library-config.interface';
import { CookieService } from 'ngx-cookie';
export declare class TranslationsService {
    private cookies;
    private config;
    /**
     * The current selected language.
     * @type {string}
     */
    private language;
    /**
     * The dictionary containing the translations.
     * @type {object}
     */
    private dictionary;
    /**
     * Default constructor.
     *
     * @param {CookieService} cookies The cookies service.
     * @param {LibraryConfig} config The library config data.
     */
    constructor(cookies: CookieService, config: LibraryConfig);
    /**
     * Set the current language to a new value.
     *
     * @param {string} language The new language.
     */
    use(language: string): void;
    /**
     * Translates a key.
     *
     * @param {string} key The key to translate.
     *
     * @returns {string} The translated key.
     */
    instant(key: string): string;
    /**
     * Verifies if the language was supported.
     *
     * @param {string} language The supplied language.
     *
     * @returns {string} The validated language.
     */
    private verify(language);
    /**
     * Translates a key to the current language equivalent.
     *
     * @param {string} key The key to translate.
     *
     * @returns {string} The translated key.
     */
    private translate(key);
    /**
     * @returns {boolean} The validity of the dictionary files.
     */
    private valid();
    /**
     * Retrieve the keys of an object in a string array format.
     *
     * @param {object} object The object containing the data.
     * @param {string} id The current identifier for the data.
     *
     * @returns {string[]} A string array containing the keys.
     */
    private getKeys(object, id?);
    /**
     * Compares two string arrays.
     *
     * @param {string[]} first The first string array.
     * @param {string[]} second The second string array.
     *
     * @returns {boolean} True if the arrays are equal, else false.
     */
    private compare(first, second);
}