import { HttpClient } from '@angular/common/http';
import { Observable } from 'rxjs';
import { Caching } from '../models/caching';
import { L10nConfigRef } from "../models/l10n-config";
/**
 * Implement this class-interface to create a custom provider for translation data.
 */
export declare abstract class TranslationProvider {
    /**
     * This method must contain the logic of data access.
     * @param language The current language
     * @param args The object set during the configuration of 'providers'
     * @return An observable of an object of translation data: {key: value}
     */
    abstract getTranslation(language: string, args: any): Observable<any>;
}
export declare class L10nTranslationProvider implements TranslationProvider {
    private http;
    private configuration;
    private caching;
    private headers;
    private options;
    constructor(http: HttpClient, configuration: L10nConfigRef, caching: Caching);
    getTranslation(language: string, args: any): Observable<any>;
    private setOptions;
    private getRequest;
}