import { Injector } from '@angular/core';
import { CrudService } from './crud.service';
import { Language } from '../models/language';
import { DateAdapter } from '@angular/material';
import { DateTimeAdapter } from 'ng-pick-datetime';
import { TranslateService } from '@ngx-translate/core';
import { Observable } from 'rxjs';
export declare class LanguagesService extends CrudService<Language> {
    private _dateAdapter;
    private _dateTimeAdapter;
    private _translate;
    languages: Language[];
    constructor(injector: Injector, _dateAdapter: DateAdapter<any>, _dateTimeAdapter: DateTimeAdapter<any>, _translate: TranslateService);
    changeLanguage(lang: string): Observable<any>;
}