/**
 * Auth-config fetch helper for the Rebase React frontend.
 *
 * The former per-endpoint auth client (login, register, refresh, OAuth,
 * sessions, …) has been removed: `useRebaseAuthController` now delegates to
 * the headless SDK's `client.auth` (from `@rebasepro/client`), which is the
 * single source of truth for the auth session. The only piece that remains
 * here is the unauthenticated `/api/auth/config` probe used to detect
 * bootstrap mode and enabled providers before a session exists.
 */
import type { AuthAdapterCapabilities } from "@rebasepro/types";
/**
 * What `GET /api/auth/config` answers.
 *
 * The wire contract is declared once, in `@rebasepro/types`, and re-exported
 * here under the name this module uses. Three near-copies of it used to exist —
 * this one listed an `emailServiceEnabled` flag no backend sends, and marked as
 * optional fields every backend always returns.
 */
export type AuthConfigResponse = AuthAdapterCapabilities;
/**
 * Cache container for `fetchAuthConfig` — holds both the inflight promise
 * (to deduplicate concurrent calls) and the cached result.
 */
export interface AuthConfigCache {
    cached: AuthConfigResponse | null;
    inflight: Promise<AuthConfigResponse> | null;
}
/**
 * Create a fresh `AuthConfigCache` instance.
 * Callers own the cache object and pass it into `fetchAuthConfig` / `clearAuthConfigCache`.
 */
export declare function createAuthConfigCache(): AuthConfigCache;
/**
 * Fetch auth configuration / status from the backend
 * This is an unauthenticated endpoint used to detect bootstrap mode.
 *
 * Results are cached for the session lifetime.
 * Concurrent calls are deduplicated: only one network request is made
 * and all callers share the same promise.
 */
export declare function fetchAuthConfig(apiUrl: string, cache: AuthConfigCache, 
/** The backend's `basePath`; only needed if it is not the default. */
apiPath?: string): Promise<AuthConfigResponse>;
/**
 * Clear the cached auth config (e.g. on logout or for testing).
 */
export declare function clearAuthConfigCache(cache: AuthConfigCache): void;