import { EntityDict } from 'oak-domain/lib/types';
import { Feature } from '../types/Feature';
import { EntityDict as BaseEntityDict } from 'oak-domain/lib/base-app-domain';
import { Cache } from './cache';
import { LocalStorage } from './localStorage';
import { Environment } from './environment';
import { Scope, TranslateOptions } from 'i18n-js';
export declare class Locales<ED extends EntityDict & BaseEntityDict> extends Feature {
    static REFRESH_STALE_INTERVAL: number;
    private cache;
    private localStorage;
    private environment;
    private language;
    private defaultLng;
    private i18n;
    private initializeLng;
    constructor(cache: Cache<ED>, localStorage: LocalStorage, environment: Environment, defaultLng: string);
    private detectLanguage;
    private reloadDataset;
    loadServerData(nss: string[]): Promise<void>;
    /**
     * 当发生key缺失时，向服务器请求最新的i18n数据，对i18n缓存数据的行为优化放在cache中统一进行
     * @param ns
     */
    private loadData;
    /**
     * 暴露给小程序的Wxs调用
     * @param key
     */
    loadMissedLocale(key: string): void;
    /**
     * translate函数，这里编译器会在params里注入两个参数 #oakNamespace 和 #oakModule，用以标识文件路径
     * @param key
     * @param params
     * @returns
     */
    t(key: string, params?: TranslateOptions): string;
    getState(): {
        lng: string;
        defaultLng: string;
        dataset: import("i18n-js").Dict;
        version: number;
    };
    hasKey(key: Scope, params?: TranslateOptions): string;
}