import { ReadableStream } from "web-streams-polyfill";
import { Stringfiable } from "../types/stringifiable";
import { Headers, HeadersInit } from "./headers";
/** Represents a HTTP method. */
export declare type Method = "GET" | "HEAD" | "POST" | "PUT" | "PATCH" | "DELETE" | "OPTIONS";
/**
 * Specifies what to do in case of a redirect.
 *
 * Redirects can either be followed automatically or not, or the
 * fetch request can be set to fail if a redirect is encountered. Default is `follow`.
 */
export declare type RedirectPolicy = "follow" | "manual" | "error";
/** Represents a request body. */
export declare type HttpBody = string | ArrayBuffer | ArrayBufferView | ReadableStream;
/** Request initialization data. */
export interface RequestInit {
    /**
     * The request body to send.
     *
     * Notice GET and HEAD requests must not have a body. Initializing a `Request`
     * of type GET or HEAD with a body will throw.
     */
    body?: HttpBody | null;
    /** Request headers to send. */
    headers?: HeadersInit;
    /** The HTTP method to use. */
    method: Method;
    /** What to do in case of redirects. */
    redirect?: RedirectPolicy;
}
/** Represents an HTTP request. */
export declare class Request implements RequestInit {
    #private;
    /**
     * Constructs a new HTTP request.
     *
     * @param resource The resource to fetch. Can either be a URL or another request that is then cloned.
     * @param init Optional request initialization.
     */
    constructor(resource: string | Stringfiable | Request, init?: RequestInit);
    /** Gets the requests' body. */
    get body(): HttpBody | null;
    /** Returns whether the body was used. */
    get bodyUsed(): boolean;
    /** Provides access to the request's header map. */
    get headers(): Headers;
    /** Returns the request method used. */
    get method(): Method;
    /** Gets the redirect policy to use. */
    get redirect(): RedirectPolicy;
    /** Returns the request's URL. */
    get url(): string;
    private assignFrom;
}