import type { Parts } from "../../http/request.js";
import { ANY, MIRROR_REQUEST } from "./support.js";
export type AllowOriginPredicate = (origin: string, parts: Parts) => Promise<boolean> | boolean;
/**
 * Holds configuration for how to set the `Access-Control-Allow-Origin` header.
 *
 * @see [MDN](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Access-Control-Allow-Origin)
 * @see {@link CorsLayer.allowOrigin}
 */
export declare class AllowOrigin {
    private readonly inner;
    private constructor();
    static default(): AllowOrigin;
    static from(like: AllowOriginLike): AllowOrigin;
    /**
     * Allows any origin by sending a wildcard (`*`).
     */
    static any(): AllowOrigin;
    /**
     * Allows a specific origin.
     */
    static exact(origin: string): AllowOrigin;
    /**
     * Allows a list of origins.
     *
     * @throws {@link !Error} If the list contains a wildcard (`*`).
     */
    static list(origins: string[]): AllowOrigin;
    /**
     * Allows a list of origins, based on a given predicate.
     */
    static predicate(predicate: AllowOriginPredicate): AllowOrigin;
    /**
     * Allows any origin, based on a given predicate.
     */
    static mirrorRequest(): AllowOrigin;
}
export type AllowOriginLike = AllowOrigin | string | string[] | typeof ANY | typeof MIRROR_REQUEST | AllowOriginPredicate;