Function waitForFile

src/daemon/client.ts:35–74

* Waits for a file to be created and populated (removed = false) or removed (removed = true).

(filePath: string, removed = false)

 * Waits for a file to be created and populated (removed = false) or removed (removed = true).
 */
function waitForFile(filePath: string, removed = false) {
  return new Promise<void>((resolve, reject) => {
    const check = () => {
      const exists = fs.existsSync(filePath);
      if (removed) {
        return !exists;
      }
      if (!exists) {
        return false;
      }
      try {
        return fs.statSync(filePath).size > 0;
      } catch {
        return false;
      }
    };

    if (check()) {
      resolve();
      return;
    }

    const timer = setTimeout(() => {
      fs.unwatchFile(filePath);
      reject(
        new Error(
          `Timeout: file ${filePath} ${removed ? 'not removed' : 'not found'} within ${FILE_TIMEOUT}ms`,
        ),
      );
    }, FILE_TIMEOUT);

    fs.watchFile(filePath, {interval: 500}, () => {
      if (check()) {
        clearTimeout(timer);
        fs.unwatchFile(filePath);
        resolve();
      }
    });
  });
}

function delay(ms: number) {
  return new Promise<void>(resolve => {