export declare class HttpRequestOptions {
    url: string;
    method: string;
    headers: {
        [key: string]: string;
    };
    content?: any;
    responseType: XMLHttpRequestResponseType;
    onProgress: ((this: HttpRequestOptions, ev: ProgressEvent) => any) | null;
    onUploadProgress: ((this: HttpRequestOptions, ev: ProgressEvent) => any) | null;
    constructor(url: string, method: string);
}