Error Handling in Async Code

What parallel error handling pattern is shown?

Promise.all([
  fetch('/api/1').catch(err => ({ error: err })),
  fetch('/api/2').catch(err => ({ error: err })),
  fetch('/api/3').catch(err => ({ error: err }))
]).then(results => {
  results.forEach(result => {
    if (result.error) {
      handleError(result.error);
    } else {
      processResult(result);
    }
  });
});

Error aggregation
This shows error aggregation in parallel operations: 1) Prevents single error from failing entire batch, 2) Collects errors from multiple operations, 3) Allows processing successful results even with some failures, 4) Maintains operation independence, 5) Useful for non-critical parallel operations, 6) Common in dashboard or report generation scenarios.
Error transformation
Fail-fast pattern
Error recovery

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