import { Observable } from 'rxjs';
import { Language } from './language';
/**
 * Options to initialize the localization manager
 */
export interface LocalizationManagerOptions {
    /**
     * The URL path (relative or absolute)
     * to the resources folder containing the json files with the localized assets.
     * defaults to '/assets/strings' if not specified.
     * Ex: '/assets/strings'
     */
    resourcesPath?: string;
    /**
     * The Azure locale to start localization manager with
     */
    azureLocale?: string;
}
export interface LocaleSet {
    /**
     * The locale ID covering all reginal locale.
     */
    id: string;
    /**
     * The neutral ID used for loading string resources.
     */
    neutral: string;
}
/**
 * Class to retrieve localized resources based on the user locale
 * This class lets you load resources from a json file in an
 * arbitrary location and determines what locale resources to return
 * on the user preference
 */
export declare class LocalizationManager<T> {
    private options?;
    private static defaultResourcesStringsFolder;
    private static resourcesStringsFile;
    private static resourcesStringsFileFormat;
    private static languageManager;
    static localStorageLocaleKey: string;
    static localStorageLocaleSetKey: string;
    static neutralCultures: Language[];
    static regionalCultures: Language[];
    private readonly defaultLocaleId;
    private resourcesStringFormat;
    private resourcesStringDefaultFile;
    private http;
    private localeIdInternal;
    private resourcesPath;
    /**
     * Initializes a new instance of the LocalizationManager class that reads the localized assets from
     * the given locations.
     * @param options? The options to initialize the localization manager.
     */
    constructor(options?: LocalizationManagerOptions);
    /**
     * Gets current locale.
     * @return string the locale string.
     */
    get localeId(): LocaleSet;
    /**
     * Gets the navigator language
     */
    getNavigatorLanguage(): string;
    /**
     * Creates a LocaleSet from a string
     */
    createLocaleSet(id: string, neutral?: string): LocaleSet;
    /**
     * Sets the current locale in persistent storage
     * @param localeId the string representing the locale selected by the user. Ex: 'es' or 'en'
     */
    saveLocale(localeSet: LocaleSet): void;
    /**
     * Updates the lang attribute of the document to reflect the current locale.
     */
    updateDocumentLanguage(): any;
    /**
     * Ensures Resources are Initialized
     */
    private initializeResources;
    /**
     * Gets the current locale.
     * Throughout code, locale code is using <lower case>-<upper case> format which is standard on both Microsoft Edge and Google Chrome.
     * ex) en-US, de-DE, ja-JP and so on.
     * @returns The current locale selected by the user
     */
    getLocaleId(): LocaleSet;
    /**
     * Fetches the localized strings from the server based on the current culture.
     * @returns an observable with object the localized strings.
     */
    fetchLocalizedStrings(): Observable<T>;
    private configureFetchFiles;
    checkBothAvailable(localeSet: LocaleSet): boolean;
    private checkIdAvailable;
    private fetchDefaultStrings;
    private fetchLocaleStrings;
    private normalizeAzureLocaleId;
}