Promise.all(), Promise.race(), and Promise.any()

What pattern does this code demonstrate?

const promises = urls.map(url => fetch(url).catch(e => e));
Promise.all(promises).then(results => {
  const successful = results.filter(r => !(r instanceof Error));
  console.log(successful);
});

Basic error handling
Sequential processing
Error suppression with Promise.all
This demonstrates error suppression pattern: 1) Catches errors for each promise individually, 2) Allows Promise.all to complete despite failures, 3) Enables processing of successful results, 4) Maintains promise order in results array, 5) Useful for non-critical parallel operations, 6) Common in scenarios where partial success is acceptable.
Promise cancellation

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