Error handling and debugging — quiz

Your test calls a function that occasionally throws TimeoutError. You want to retry once on timeout but fail otherwise. Which structure works?

• try { fn(); } catch (err) { if (err instanceof TimeoutError) fn(); else throw err; }
• if (fn() === error) retry();
• fn().catch(retry); — works for any function regardless of return type
• Wrap the entire test file in one giant try block and ignore everything