import { ANY, MIRROR_REQUEST } from "./support.js";
/**
 * Holds configuration for how to set the `Access-Control-Allow-Headers` header.
 *
 * @see [MDN](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Access-Control-Allow-Headers)
 * @see {@link CorsLayer.allowHeaders}
 */
export declare class AllowHeaders {
    private readonly inner;
    private constructor();
    static default(): AllowHeaders;
    static from(like: AllowHeadersLike): AllowHeaders;
    /**
     * Allows no headers.
     */
    static none(): AllowHeaders;
    /**
     * Allows any headers by sending a wildcard (`*`).
     */
    static any(): AllowHeaders;
    /**
     * Sets multiple allowed headers.
     */
    static list(headers: string[]): AllowHeaders;
    /**
     * Allow any headers by mirroring the preflight `Access-Control-Request-Headers` header.
     */
    static mirrorRequest(): AllowHeaders;
}
export type AllowHeadersLike = AllowHeaders | string[] | typeof ANY | typeof MIRROR_REQUEST | null;