import { HttpClient } from '@angular/common/http';
import { NgForageCache } from '@ngforage/ngforage-ng4';
import 'rxjs/add/operator/filter';
import 'rxjs/add/operator/map';
import 'rxjs/add/operator/switchMap';
import 'rxjs/add/operator/toPromise';
import { Observable } from 'rxjs/Observable';
import { FormattedPayload } from './Formatted';
import { ProxyURLFormatterFunction } from './ProxyURLFormatterFunction';
/** Fetches and formats the calendar via a CORS proxy */
export declare class CalendarFetcher {
    private readonly cache;
    private readonly fn;
    private readonly http;
    constructor(cache: NgForageCache, fn: ProxyURLFormatterFunction, http: HttpClient);
    /**
     * Fetch a user
     * @param user The username
     */
    fetch(user: string): Observable<FormattedPayload>;
    /**
     * Fetch a user
     * @param user The username
     * @param formatterFn A URL formatter function override
     */
    fetch(user: string, formatterFn: ProxyURLFormatterFunction): Observable<FormattedPayload>;
    /**
     * Fetch a user
     * @param user The username
     * @param toYear The cutoff year
     * @param toMonth The cutoff month
     * @param toDay The cutoff day
     */
    fetch(user: string, toYear: string | number, toMonth: string, toDay: string): Observable<FormattedPayload>;
    /**
     * Fetch a user
     * @param user The username
     * @param toYear The cutoff year
     * @param toMonth The cutoff month
     * @param toDay The cutoff day
     * @param formatterFn A URL formatter function override
     */
    fetch(user: string, toYear: string | number, toMonth: string, toDay: string, formatterFn: ProxyURLFormatterFunction): Observable<FormattedPayload>;
}