Function checkForUpdate

src/cli.ts:367–395

()

}

async function checkForUpdate(): Promise<void> {
  try {
    const cacheFile = path.join(dataDir(), '.update-check');
    // Re-fetch from npm if cache is stale (>24hr)
    let needsFetch = true;
    try {
      const stat = fs.statSync(cacheFile);
      if (Date.now() - stat.mtimeMs < UPDATE_CHECK_INTERVAL_MS) needsFetch = false;
    } catch { /* file doesn't exist, fetch */ }

    if (needsFetch) {
      const controller = new AbortController();
      const timeout = setTimeout(() => controller.abort(), 5000);
      const res = await fetch('https://registry.npmjs.org/fieldtheory/latest', {
        signal: controller.signal,
        headers: { accept: 'application/json' },
      });
      clearTimeout(timeout);

      if (res.ok) {
        const data = await res.json() as any;
        if (data?.version) fs.writeFileSync(cacheFile, data.version);
      }
    }

    // Always show notice from cache
    showCachedUpdateNotice();
  } catch { /* network error, offline, etc — silently skip */ }
}

/** Sync version — reads cached check result. Used after help output where we can't await. */
function showCachedUpdateNotice(): void {