import { type Delay } from "@dsherret/shell";
/** A timeout error. */
export declare class TimeoutError extends Error {
    constructor(message: string);
    get name(): string;
}
/** An iterator that returns a new delay each time. */
export interface DelayIterator {
    next(): number;
}
export declare function delayToIterator(delay: Delay | DelayIterator): DelayIterator;
export declare function formatMillis(ms: number): string;
export declare function filterEmptyRecordValues<TValue>(record: Record<string, TValue | undefined>): Record<string, TValue>;
export declare function getFileNameFromUrl(url: string | URL): string | undefined;