import { HttpInterceptor, HttpHandler, HttpRequest, HttpEvent } from '@angular/common/http';
import { MessageService } from '../services/message.service';
import { Observable } from 'rxjs';
import * as i0 from "@angular/core";
export declare class LoggingInterceptor implements HttpInterceptor {
    private messenger;
    constructor(messenger: MessageService);
    intercept(req: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>>;
    static ɵfac: i0.ɵɵFactoryDeclaration<LoggingInterceptor, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<LoggingInterceptor>;
}