import { HttpBackend } from '@angular/common/http';
import { EnvironmentService } from '@aztrix/environment';
import { Observable } from 'rxjs';
import * as i0 from "@angular/core";
export declare class FeedbackService {
    private _environment;
    private http;
    constructor(backend: HttpBackend, _environment: EnvironmentService);
    submit(requestTypeId: string, summary: string, email: string, description: string, attachment?: Blob): Observable<any>;
    private _uploadImage;
    private _submitTicket;
    searchKnowledgeBase(query: string): Observable<any>;
    private _apiUrl$;
    static ɵfac: i0.ɵɵFactoryDeclaration<FeedbackService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<FeedbackService>;
}
