/**
 * Localization manager providing user-selectable locales.
 * Note: Comments in English per instructions.
 */
/**
 * Locale message entry structure
 */
interface LocaleMessageEntry {
    message: string;
    description?: string;
    placeholders?: Record<string, {
        content: string;
        example?: string;
    }>;
}
/**
 * Locale messages object
 */
interface LocaleMessages {
    [key: string]: LocaleMessageEntry;
}
/**
 * Storage settings structure
 */
interface StorageSettings {
    preferredLocale?: string;
    [key: string]: unknown;
}
declare const DEFAULT_SETTING_LOCALE = "auto";
declare class LocalizationManager {
    private messages;
    private locale;
    private ready;
    private loadingPromise;
    private fallbackMessages;
    constructor();
    init(): Promise<void>;
    getStorageSettings(): Promise<StorageSettings | null>;
    setPreferredLocale(locale: string): Promise<void>;
    ensureFallbackMessages(): Promise<void>;
    loadLocale(locale: string): Promise<void>;
    fetchLocaleData(locale: string): Promise<LocaleMessages | null>;
    translate(key: string, substitutions?: string | string[]): string;
    lookupMessage(source: LocaleMessages | null, key: string, substitutions?: string | string[]): string | null;
    getLocale(): string;
}
declare const Localization: LocalizationManager;
export default Localization;
export { DEFAULT_SETTING_LOCALE };