Error Handling in Async Code

What error handling best practice is demonstrated?

async function withTimeout(promise, ms, errorMessage) {
  let timeoutId;
  try {
    const timeoutPromise = new Promise((_, reject) => {
      timeoutId = setTimeout(() => {
        reject(new Error(errorMessage || `Operation timed out after ${ms}ms`));
      }, ms);
    });
    return await Promise.race([promise, timeoutPromise]);
  } finally {
    clearTimeout(timeoutId);
  }
}

Basic timeout handling
Resource cleanup
This shows proper resource cleanup in error handling: 1) Uses finally block to ensure cleanup, 2) Prevents timeoutId leak in both success and error cases, 3) Provides custom error messages, 4) Implements proper timeout mechanism, 5) Handles both resolution and rejection paths, 6) Critical for preventing memory leaks in error scenarios.
Error transformation
Error suppression

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