import { App, Ref } from 'vue';
export type Locale = 'en_US' | 'id_ID';
export interface I18n {
    /**
     * Locale message translation
     *
     * @param key - The translation key
     * @param params - A values of named interpolation
     *
     * @returns translation message
     * @example `t('Hello {user}!', { user: 'John Doe' })` - returns: 'Hello John Doe!'
     */
    t: (key: string, params?: Record<string, any>) => string;
    /**
     * Change the locale dynamically
     *
     * @param newLocale - The locale to switch to
     */
    setLocale: (newLocale: Locale) => Promise<void>;
    /**
     * Get the current locale
     *
     * @returns Current locale
     */
    locale: Ref<Locale>;
}
export declare const useI18n: () => I18n;
declare const _default: {
    install: (app: App) => void;
};
export default _default;
declare module 'vue' {
    interface ComponentCustomProperties {
        $i18n: I18n;
        $t: I18n['t'];
    }
}