Error Handling in Async Code

What is the purpose of this global error handler?

window.addEventListener('unhandledrejection', event => {
  console.error('Unhandled promise rejection:', event.reason);
  event.preventDefault();
  // Report to error tracking service
});

To prevent errors from occurring
To catch synchronous errors
To handle unhandled Promise rejections
This global handler catches unhandled Promise rejections: 1) Acts as a last resort for uncaught async errors, 2) Prevents errors from being silently swallowed, 3) Enables centralized error logging and reporting, 4) Useful for debugging and monitoring production issues, 5) Can prevent app crashes in some environments, 6) Critical for maintaining proper error tracking in async applications.
To suppress all errors

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