import { OnChanges } from '@angular/core';
import { _HttpClient } from '@delon/theme';
import { EventService } from '../services/event.service';
export declare class HttpDirective implements OnChanges {
    http: _HttpClient;
    private event;
    constructor(http: _HttpClient, event: EventService);
    loading: boolean;
    _HTTP_LOADING_EVENT_NAME: string;
    ngOnChanges(): void;
}