1export function sleep(ms: number, signal?: AbortSignal): Promise<void> {
2  return new Promise((resolve) => {
3    const t = setTimeout(() => {
4      if (signal) signal.removeEventListener('abort', onAbort);
5      resolve();
6    }, ms);
7 
8    const onAbort = () => {
9      clearTimeout(t);
10      if (signal) signal.removeEventListener('abort', onAbort);
11      resolve();
12    };
13 
14    if (signal) {
15      if (signal.aborted) {
16        onAbort();
17      } else {
18        signal.addEventListener('abort', onAbort, { once: true });
19      }
20    }
21  });
22}
23 
24export function cookie_header(cookies: Record<string, string>): string {
25  return Object.entries(cookies)
26    .filter(([, v]) => typeof v === 'string' && v.length > 0)
27    .map(([k, v]) => `${k}=${v}`)
28    .join('; ');
29}
30 
31export const cookieHeader = cookie_header;
32 
33export function extract_set_cookie_value(setCookie: string | null, name: string): string | null {
34  if (!setCookie) return null;
35  const re = new RegExp(`(?:^|[;,\\s])${name.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\$&')}=([^;]+)`, 'i');
36  const m = setCookie.match(re);
37  if (!m) return null;
38  return m[1] ?? null;
39}
40 
41export async function fetch_with_timeout(
42  url: string,
43  init: RequestInit & { timeout_ms?: number } = {},
44): Promise<Response> {
45  const { timeout_ms, ...rest } = init;
46  if (!timeout_ms || timeout_ms <= 0) return fetch(url, rest);
47 
48  const ctl = new AbortController();
49  const t = setTimeout(() => ctl.abort(), timeout_ms);
50  try {
51    return await fetch(url, { ...rest, signal: ctl.signal });
52  } finally {
53    clearTimeout(t);
54  }
55}
56 
57export const fetchWithTimeout = fetch_with_timeout;
58