import { HttpClient, HttpHeaders, HttpParams } from "@angular/common/http";
import { Observable } from "rxjs";
import * as i0 from "@angular/core";
/**
 * Wrapper for Angular HttpClient
 */
export declare class HttpService {
    private baseUrl;
    private http;
    constructor(baseUrl: string, http: HttpClient);
    /**
     * Construct a GET request
     */
    get<T>(url: string, params?: Map<string, any>, responseType?: string, headers?: Map<string, any>, getResponseObject?: boolean): Observable<T>;
    /**
     * Construct a POST request
     */
    post<T>(url: string, body?: any, params?: Map<string, any>, responseType?: string, headers?: Map<string, any>, getResponseObject?: boolean): Observable<T>;
    /**
     * Construct a PUT request
     */
    put<T>(url: string, body?: any, params?: Map<string, any>, responseType?: string, headers?: Map<string, any>, getResponseObject?: boolean): Observable<T>;
    /**
     * Construct a DELETE request
     */
    delete<T>(url: string, params?: Map<string, any>, responseType?: string, headers?: Map<string, any>, getResponseObject?: boolean): Observable<T>;
    /**
     * Append baseUrl from index.html to URI in order to get the "absolute" path of a request
     */
    protected getAbsolutePath(uri: any): string;
    /**
     * Helper method to prepare options object passed to Angular HttpClient
     */
    protected prepareHttpOptions(params?: Map<string, any>, responseType?: string, headers?: Map<string, any>, getResponseObject?: boolean): object;
    /**
     * Helper method to prepare query params used in options object
     */
    protected buildHttpParams(params: Map<string, any>, httpParams: HttpParams): HttpParams;
    /**
     * Helper method to prepare request headers used in options object
     */
    protected buildHttpHeaders(headers: Map<string, any>, httpHeaders: HttpHeaders): HttpHeaders;
    static ɵfac: i0.ɵɵFactoryDeclaration<HttpService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<HttpService>;
}