import { BehaviorSubject, Observable } from 'rxjs';
import { CookieService, StoreService } from '@ithinkdt/shared/browser';
import { TranslateService } from '@ngx-translate/core';
import { NzI18nService } from 'ng-zorro-antd/i18n';
import { I18nModels } from './i18n.interface';
export declare const I18N_LANGUAGE = "language";
export declare function isEnglish(lang: any): boolean;
export declare class I18NService implements I18nModels {
    private nzI18nService;
    private cookieSrv;
    private translate;
    private storeSrv;
    private _default;
    change$: BehaviorSubject<string>;
    _langs: {
        code: string;
        text: string;
    }[];
    private fileNames;
    constructor(nzI18nService: NzI18nService, cookieSrv: CookieService, translate: TranslateService, storeSrv: StoreService);
    setZorro(lang: string): this;
    setDateFns(lang: string): this;
    readonly change: Observable<string>;
    use(lang: string): void;
    /** 获取语言列表 */
    getLangs(): {
        code: string;
        text: string;
    }[];
    /**
     *  翻译
     * @param key 需要翻译的键
     * @param value 需要插入的值
     * exp:
     * key: demokey, value: '老虎';
     *   zh-CN.json
     *     `demokey: '从前有一只{value},它很可爱'`
     *   编译后:
     *      `'从前有一只老虎,它很可爱'`
     */
    interpret(key?: string, value?: string): string;
    /** 默认语言 */
    readonly defaultLang: string;
    /** 当前语言 */
    readonly currentLang: string;
    storeLang(lang: string): void;
    storedLang(): string;
    setTranslations(lang: string): void;
    mergeTransitions(lang: string): void;
    getProjectTranslations(lang: string, cb: (p: any) => void): void;
    readonly defaultLibLangData: object;
    /**
     * 设置i18n国际化
     * PS：国际化刷新机制下的补充方法
     */
    setLanguage(): void;
}