export interface TapiCredentials {
    uid: string;
    idToken: string;
    refreshToken: string;
}
export interface TapiAuthOptions {
    cachePath?: string;
    expirySkewMs?: number;
    fetch?: typeof fetch;
    firebaseApiKey?: string;
}
export declare function getTapiDataDir(): string;
export declare function getTapiAuthCachePath(options?: TapiAuthOptions): string;
export declare function readTapiCredentials(options?: TapiAuthOptions): TapiCredentials | null;
export declare function writeTapiCredentials(credentials: TapiCredentials, options?: TapiAuthOptions): Promise<void>;
export declare function tapiTokenIsFresh(idToken: string, skewMs?: number): boolean;
export declare function refreshTapiCredentials(options?: TapiAuthOptions): Promise<TapiCredentials | null>;
export declare function requireTapiCredentials(options?: TapiAuthOptions & {
    forceRefresh?: boolean;
}): Promise<TapiCredentials>;
export declare function createTapiAuthProvider(options?: TapiAuthOptions): (forceRefresh?: boolean) => Promise<string>;