export declare function getXaiAuthPath(): string;
export interface XaiTokenBundle {
    access_token: string;
    refresh_token: string;
    expires_at: number;
    token_type?: string;
    scope?: string;
}
export interface XaiAuthStoreDeps {
    authPath?: () => string;
    readFile?: (path: string) => string | null;
    writeFile?: (path: string, data: string, mode: number) => void;
    chmod?: (path: string, mode: number) => void;
    mkdir?: (dir: string) => void;
    unlink?: (path: string) => void;
    exists?: (path: string) => boolean;
}
export declare function parseXaiTokenBundle(raw: string): XaiTokenBundle | null;
export declare function readXaiTokens(deps?: XaiAuthStoreDeps): XaiTokenBundle | null;
export declare function writeXaiTokens(bundle: XaiTokenBundle, deps?: XaiAuthStoreDeps): void;
export declare function clearXaiTokens(deps?: XaiAuthStoreDeps): void;
export declare function last4OfToken(token: string): string;