What happens when an uncaught exception occurs in Node.js?

If an error (exception) is thrown but not caught, Node.js will:

• Print the error stack trace to the console.
• Immediately terminate the process to avoid unpredictable behavior.

Why? Because an uncaught exception might leave the app in an inconsistent state.

Best practice: Use try/catch for synchronous code, and listen to

'uncaughtException' or 'unhandledRejection' events to log errors and gracefully

shut down:

process.on('uncaughtException', (err) => {

console.error('Uncaught Exception:', err);

process.exit(1); // Exit to avoid unstable state

});