/**
 * `POST` an `application/x-www-form-urlencoded` body and parse the JSON
 * response — the token, PAR, and revocation endpoints. `params` values
 * are URL-encoded by {@link URLSearchParams}.
 *
 * @param {string} url
 * @param {Record<string, string>} params
 * @param {HttpOptions} [options]
 * @returns {Promise<Record<string, unknown>>}
 */
export function postForm(url: string, params: Record<string, string>, options?: HttpOptions): Promise<Record<string, unknown>>;
/**
 * `GET` a JSON resource, optionally with a bearer token — the userinfo
 * and discovery endpoints.
 *
 * @param {string} url
 * @param {{ token?: string }} [auth]
 * @param {HttpOptions} [options]
 * @returns {Promise<Record<string, unknown>>}
 */
export function getJson(url: string, auth?: {
    token?: string;
}, options?: HttpOptions): Promise<Record<string, unknown>>;
export type HttpOptions = {
    /**
     * request timeout in ms (default 8000)
     */
    timeout?: number | undefined;
    /**
     * max response bytes accepted (default 1 MB)
     */
    maxResponseSize?: number | undefined;
    /**
     * caller-provided signal, combined with the timeout
     */
    signal?: AbortSignal;
    /**
     * extra request headers
     */
    headers?: Record<string, string> | undefined;
    /**
     * {@link ErrorCode} used for a non-2xx response
     */
    errorCode?: string | undefined;
};