/**
 * Wrapper around "fetch" where an optional timeout can be specified to cancel
 * requests if they take to long.
 * @param resource
 *   URI of the resource to be called.
 * @param options
 *   Fetch options for the request.
 * @returns
 *
 */
export declare function fetchWithTimeout<R>(resource: string | URL, options?: RequestInit, timeout?: number): Promise<R>;
export declare function clamp(v: number, min: number, max: number): number;
export declare function sleep(ms: number): Promise<void>;