import http from "node:http";
import stream from "node:stream";
import contentDisposition from "content-disposition";
import { Fritter } from "./Fritter.js";
import { FritterContext } from "./FritterContext.js";
/** Options for a FritterResponse's redirect method. */
export type FritterResponseRedirectOptions = {
    /** The status code to use for the redirect. */
    statusCode?: 300 | 301 | 302 | 303 | 305 | 307 | 308;
    /** The URL to redirect to if there was no referer. */
    fallbackRedirectUrl?: string;
};
/** An object containing information about the response. */
export declare class FritterResponse {
    #private;
    /** The Fritter instance that created this request. */
    fritter: Fritter;
    /** The Fritter context. */
    fritterContext: FritterContext;
    /** The raw Node.js HTTP request. */
    nodeRequest: http.IncomingMessage;
    /** The raw Node.js HTTP response. */
    nodeResponse: http.ServerResponse;
    /**
     * Constructs a new Fritter response using the given Node.js HTTP response.
     *
     * @param fritter The Fritter instance that created this request.
     * @param fritterContext The Fritter context.
     * @param nodeRequest A Node.js HTTP request.
     * @param nodeResponse A Node.js HTTP response.
     */
    constructor(fritter: Fritter, fritterContext: FritterContext, nodeRequest: http.IncomingMessage, nodeResponse: http.ServerResponse);
    /** Appends a value to the given header. */
    appendHeaderValue(headerName: string, value: string): void;
    /** Appends a header name to the Vary header. */
    appendVaryHeaderName(headerName: string): void;
    /** Gets the response body. */
    getBody(): string | object | Buffer<ArrayBufferLike> | stream | null;
    /** Gets the content length of the response body. */
    getContentLength(): number | null;
    /** Gets the content type of the request. */
    getContentType(): string | null;
    /** Gets the ETag header of the response. */
    getEntityTag(): string | null;
    /**
     * If the request has no body, returns null.
     *
     * If the request has a body but is none of the types specified, returns false.
     *
     * Otherwise, returns the type of the request body.
     */
    getFirstMatchingType(types: string[]): string | false;
    /**
     * Gets the first value of the given header.
     *
     * @param headerName The name of the header to get the value of. This is case-insensitive.
     * @returns The first value of the given header, or null if the header does not exist.
     */
    getHeaderValue(headerName: string): string | null;
    /**
     * Gets all values of the given header.
     *
     * @param headerName The name of the header to get the values of. This is case-insensitive.
     * @returns An array of all values of the given header, or an empty array if the header does not exist.
     */
    getHeaderValueArray(headerName: string): string[];
    /** Gets the last modified date of the response. */
    getLastModified(): Date | null;
    /** Gets the socket of the response. */
    getSocket(): import("net").Socket | null;
    /** Gets the response status code. */
    getStatusCode(): number;
    /** Gets whether the response body has been explicitly set to null. */
    hasExplicitlyNullBody(): boolean;
    /** Gets whether the content type has been explicitly set. */
    hasExplicitlySetContentType(): boolean;
    /** Checks if the response is still writable. */
    isWritable(): boolean;
    /** Gets whether the response body has been explicitly set. */
    hasExplicitlySetStatusCode(): boolean;
    /** Gets whether the response currently contains the given header. */
    hasHeaderValues(headerName: string): boolean;
    /** Gets whether the response headers have been sent. */
    hasSentHeaders(): boolean;
    /** Removes the given response header, if it exists. */
    removeHeaderValue(name: string): void;
    /** Sets the response body. */
    setBody(body: string | Buffer | object | stream.Stream | null): void;
    /** Sets the Content-Disposition header of the response. */
    setContentDisposition(fileName: string | undefined, options: contentDisposition.Options | undefined): void;
    /** Sets the Content-Length header of the response. */
    setContentLength(length: number | null): void;
    /** Sets the Content-Type header of the response. */
    setContentType(type: string | null): void;
    /** Sets the ETag header of the response. */
    setEntityTag(entityTag: string): void;
    /**
     * Sets a response header.
     *
     * Supplying an array of values will set multiple headers with the same name.
     */
    setHeaderValue(name: string, value: string | string[]): void;
    /** Sets the Last-Modified header of the response. */
    setLastModified(date: Date): void;
    /**
     * Sets the response to redirect to the given URL.
     *
     * You can also use the special URL "back" to redirect to the previous page, if the client sent a Referer header.
     */
    setRedirect(url: string, options?: FritterResponseRedirectOptions): void;
    /** Sets the response status code. */
    setStatusCode(statusCode: number): void;
}
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