export declare const json: (arg: Request) => Promise>; export declare const blob: (arg: Request) => Promise>; export declare const text: (arg: Request) => Promise>; export declare const formData: (arg: Request) => Promise>; export declare const arrayBuffer: (arg: Request) => Promise>; export declare class HttpRequest { private _url; readonly init?: RequestInit | undefined; private _request; constructor(_url: string | URL | HttpRequest, init?: RequestInit | undefined); get request(): Request; get url(): string | URL; clone(): HttpRequest; arrayBuffer(): Promise>; blob(): Promise>; formData(): Promise>; json(): Promise>; text(): Promise>; }