type Poll_running_cb<T> = (ctx: {
    attempt: number;
    timeout_seconds: number;
    status: string;
    result: T;
}) => void;
type Poll_opts<T> = {
    timeout_seconds: number;
    fetch_once: () => Promise<T>;
    get_status: (result: T) => string | undefined;
    running_statuses: string[];
    interval_ms?: number;
    timeout_label?: string;
    on_running?: Poll_running_cb<T>;
};
type Poll_result<T> = {
    result: T;
    attempts: number;
    last_status?: string;
};
declare const sleep: (ms: number) => Promise<unknown>;
declare const parse_timeout: (raw_timeout: string | undefined, env_key?: string) => number;
declare const poll_until: <T>(opts: Poll_opts<T>) => Promise<Poll_result<T>>;
export { sleep, parse_timeout, poll_until };
export type { Poll_running_cb, Poll_opts, Poll_result };
//# sourceMappingURL=polling.d.ts.map