export interface DelayOptions { signal?: AbortSignal; persistent?: boolean;}
export function delay(ms: number, options: DelayOptions = {}): Promise<void> { const { signal, persistent } = options; if (signal?.aborted) { return Promise.reject(new DOMException("Delay was aborted.", "AbortError")); } return new Promise((resolve, reject) => { const abort = () => { clearTimeout(i); reject(new DOMException("Delay was aborted.", "AbortError")); }; const done = () => { signal?.removeEventListener("abort", abort); resolve(); }; const i = setTimeout(done, ms); signal?.addEventListener("abort", abort, { once: true }); if (persistent === false) { try { Deno.unrefTimer(i); } catch (error) { if (!(error instanceof ReferenceError)) { throw error; } console.error("`persistent` option is only available in Deno"); } } });}