import { ReadableStream } from "web-streams-polyfill";
import { HttpBody } from "./request";
import { Headers, HeadersInit } from "./headers";
/** Initialization data for creating a new response. */
export interface ResponseInit {
    /** Any headers to pass to the client. */
    headers?: HeadersInit;
    /** The response status code. */
    status?: number;
    /** The status text to use. */
    statusText?: string;
}
/** Represents an HTTP response. */
export declare class Response {
    #private;
    /**
     * Constructs a new HTTP response.
     *
     * @param body The HTTP response body.
     * @param init Response initialization metadata.
     */
    constructor(body?: HttpBody | null, init?: ResponseInit);
    /**
     * Gets the body of the response as `ReadableStream`.
     *
     * This can only be called once. Subsequent accesses will throw a `TypeError`.
     */
    get body(): ReadableStream | null;
    /** Returns whether the body has already been used and subsequent accesses would throw. */
    get bodyUsed(): boolean;
    /** Gets the HTTP response headers. */
    get headers(): Headers;
    /**
     * Returns whether the response's status code indicates success.
     *
     * Success is defined as HTTP status codes 200-299 (inclusive).
     */
    get ok(): boolean;
    /** Returns whether the response was redirected. */
    get redirected(): boolean;
    /** Returns the HTTP status code. */
    get status(): number;
    /** Returns the status message corresponding to the status code. */
    get statusText(): string;
    /** Gets the URL that was ultimately fetched (after redirects). */
    get url(): string;
    /**
     * Returns a promise that resolves with the response data read into an ArrayBuffer.
     *
     * Be aware, this reads the entire response into memory, and thus may easily exceed
     * your heap limit.
     */
    arrayBuffer(): Promise<ArrayBuffer>;
    /** Attempts to deserialize the response body as JSON. */
    json(): Promise<any>;
    /** Reads the response body to a string. The text is decoded using UTF-8. */
    text(): Promise<string>;
}