import { ProgressSpinnerMode } from "@angular/material";
import { Observable } from "rxjs";
import { Injector } from "@angular/core";
export declare class TransferHttpHelper {
    spinnerMode: ProgressSpinnerMode;
    spinnerProgress: number;
    private _isDownloading;
    isDownloading: boolean;
    private _alert;
    constructor(injector: Injector);
    download(method: Observable<any>): Observable<any>;
    upload(method: Observable<any>): Observable<any>;
}