import type { HttpResponse } from "./response.js";
export declare const TO_HTTP_RESPONSE: unique symbol;
/**
 * An interface for objects that can be converted into an HTTP response.
 */
export type ToHttpResponse = {
    [TO_HTTP_RESPONSE](): HttpResponse;
};
/**
 * Determines if a given value implements `ToHttpResponse`.
 */
export declare const isToHttpResponse: (value: unknown) => value is ToHttpResponse;