/**
 * i18n store — locale + UI/form/validation strings for R2DigiSolutions components.
 *
 * - Singleton: `import { i18n } from '@r2digisolutions/components'`
 * - Reactive via Svelte 5 runes (`$state` / `$derived`)
 * - Persists locale to localStorage
 *
 * @example
 * ```ts
 * i18n.set('es');
 * i18n.t('save'); // → "Guardar"
 * i18n.t('minLength', { min: 8 });
 * ```
 */
import { type LocaleCode, type MessageKey, type MessageParams, type UiMessages } from './i18n.js';
export type { LocaleCode, MessageKey, MessageParams, UiMessages };
declare class I18nStore {
    #private;
    constructor();
    get locale(): LocaleCode;
    /** Active dictionary (built-in + overrides). */
    get messages(): UiMessages;
    /** Available built-in language tags. */
    get locales(): string[];
    /** Translate a built-in UI / validation key. */
    t(key: MessageKey, params?: MessageParams): string;
    /** Change active locale (`es`, `en-US`, …). */
    set(locale: LocaleCode): void;
    /** Merge message overrides on top of the active dictionary. */
    extend(messages: Partial<UiMessages>): void;
    /** Replace all overrides. */
    setOverrides(messages?: Partial<UiMessages>): void;
    /** One-shot setup (locale + optional overrides). */
    configure(options: {
        locale?: LocaleCode;
        messages?: Partial<UiMessages>;
    }): void;
}
export declare const i18n: I18nStore;