import { Observable } from 'rxjs';
import { AttendanceService } from './attendance.service';
import { CalendarEvent } from '../models';
import { CalendarEventBuilder } from '../builders';
import { CalendarEvents } from '../api';
import { DutyService } from './duty.service';
/**
 * Calendar Event Service
 * =============================================================================
 * A CalendarEvent is a union of
 *
 *  - Attendance: Upcoming attendance periods.
 *  - Duty: Upcoming duty periods.
 */
export declare class CalendarService {
    private readonly attendanceService;
    private readonly eventBuilder;
    private readonly dutyService;
    constructor(attendanceService: AttendanceService, eventBuilder: CalendarEventBuilder, dutyService: DutyService);
    index(query?: CalendarEvents.Query): Observable<Array<CalendarEvent>>;
}