import type { XaiTokenBundle } from './auth-store.js';
export type FetchFn = typeof fetch;
export interface XaiOidcDiscovery {
    issuer: string;
    authorization_endpoint: string;
    token_endpoint: string;
    device_authorization_endpoint?: string;
    userinfo_endpoint?: string;
}
export interface OAuthHttpDeps {
    fetchFn?: FetchFn;
    issuer?: string;
    clientId?: string;
    scopes?: string;
    nowSeconds?: () => number;
    nowMs?: () => number;
}
export declare function asNonEmptyString(v: unknown): string | undefined;
export declare function safeText(res: Response): Promise<string>;
export declare function clearOidcCache(): void;
export declare function discoverXaiOidc(deps?: OAuthHttpDeps): Promise<XaiOidcDiscovery>;
export declare function discoverXaiOidcCached(deps?: OAuthHttpDeps): Promise<XaiOidcDiscovery>;
export declare function tokenResponseToBundle(json: Record<string, unknown>, nowSeconds?: () => number, fallbackRefresh?: string): XaiTokenBundle | null;