Async/Await Error Handler

/**
 * Async/await error handler
 * @param promise Promise to execute
 * @returns Tuple [error, result]
 */
async function asyncHandler<T>(promise: Promise<T>): Promise<[Error | null, T | null]> {
  try {
    const result = await promise;
    return [null, result];
  } catch (error) {
    return [error as Error, null];
  }
}

// Usage Example
const fetchData = () => fetch('https://api.example.com/data').then(res => res.json());

// Without try/catch
const [error, data] = await asyncHandler(fetchData());
if (error) {
  console.error('Fetch failed:', error);
} else {
  console.log('Data:', data);
}