export declare abstract class HttpService {
    private apiBaseUri;
    constructor(apiBaseUri: string);
    protected getHtml(uri: string, headers?: any): Promise<string>;
    protected get<T = any>(uri: string, headers?: any): Promise<T>;
    protected post<T = any>(uri: string, body: any, headers?: any): Promise<T>;
    protected patch<T = any>(uri: string, body: any, headers?: any): Promise<T>;
    protected put<T = any>(uri: string, body: any, headers?: any): Promise<T>;
    protected delete<T = any>(uri: string, headers?: any): Promise<T>;
    protected downloadFile(uri: string, outputPath: string): Promise<void>;
    private handleApiResponse;
    private handleApiTextResponse;
}