Function check

__tests__/watcher.test.ts:48–52

()

  return new Promise((resolve, reject) => {
    const start = Date.now();
    const check = () => {
      if (condition()) return resolve();
      if (Date.now() - start > timeoutMs) return reject(new Error('waitFor timed out'));
      setTimeout(check, intervalMs);
    };
    check();
  });
}