import { EggCore } from '@eggjs/core';
export declare const I18N_RESOURCES: unique symbol;
export default class I18nApplication extends EggCore {
    [I18N_RESOURCES]: Record<string, Record<string, string>>;
    isSupportLocale(locale: string): boolean;
    gettext(locale: string, key: string, value?: any, ...args: any[]): string;
    __(locale: string, key: string, value?: any, ...args: any[]): string;
}