import type { Middleware } from '../api/generated/default';
import type { OAuth } from '../oauth/OAuth';
/**
 * Middleware that transparently refreshes an expired access token on 401.
 *
 * When a response comes back with HTTP 401 the middleware delegates to
 * `OAuth.refreshAccessToken()` which checks for a refresh token, performs the
 * HTTP exchange, and updates the token store.  On success the original request
 * is retried with the fresh access token.  On failure the 401 propagates.
 *
 * When the client is unauthenticated (no refresh token stored) the middleware
 * short-circuits immediately, avoiding noisy error callbacks.
 */
export declare const addTokenRefreshMiddleware: ({ oauth }: {
    oauth: OAuth;
}) => Middleware;