What happens if an error event is emitted but there is no listener attached to handle it in Node.js?

  • Node.js throws an uncaught exception
  • The error event is silently ignored
  • Node.js logs an error message
  • It depends on the event type
If an error event is emitted in Node.js, but there is no listener attached to handle it, Node.js will throw an uncaught exception. This can lead to the termination of the Node.js process if the exception is not caught elsewhere in your code.
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