Function getUpdateNotice

src/upgrade/update-check.ts:209–226

(deps: UpdateCheckDeps = {})

 * still returns immediately from the stale cache.
 */
export function getUpdateNotice(deps: UpdateCheckDeps = {}): string | null {
  const d = resolveDeps(deps);
  if (updateCheckDisabled(d.env)) return null;

  const useMemo = deps.dir === undefined && deps.now === undefined;
  const nowMs = d.now();
  if (useMemo && noticeMemo && nowMs - noticeMemo.at < NOTICE_MEMO_TTL_MS) {
    return noticeMemo.value;
  }

  const cached = readUpdateCheckCache(d.dir);
  if (!cacheIsFresh(cached, nowMs)) {
    void refreshUpdateCheck(deps).catch(() => { /* fail silent */ });
  }
  const value = noticeFrom(cached, d);
  if (useMemo) noticeMemo = { at: nowMs, value };
  return value;
}

/** Test hook: clear the per-process memo. */
export function resetUpdateNoticeMemo(): void {