import { type Ref, type MaybeRef, type ComputedRef } from 'vue';
import { type Locale, type Messages, type Translator } from '@eternalheart/file-preview-core';
import { type LocaleInjection } from '../i18n/localeKey';
/**
 * 在主组件中调用，向子树注入 locale context
 */
export declare function provideLocale(locale: MaybeRef<Locale | undefined>, messages?: MaybeRef<Partial<Record<Locale, Partial<Messages>>> | undefined>): LocaleInjection;
/**
 * 获取翻译函数。在 provider 外使用时自动 fallback 到 en-US。
 */
export declare function useTranslator(): {
    locale: Ref<Locale>;
    t: ComputedRef<Translator>;
};