import { Title } from "@angular/platform-browser";
import { TranslateService } from "@ngx-translate/core";
import { Language } from "./i18n.interface";
import { NzI18nService } from "ng-zorro-antd";
export declare class I18nService {
    private translateService;
    private zorroI18n;
    private titleService;
    languages: Array<Language>;
    constructor(translateService: TranslateService, zorroI18n: NzI18nService, titleService: Title);
    use(lang: string): void;
    zorro(lang: string): void;
    title(): void;
    init(langs: Array<Language>): void;
}