CodeParkPromise.resolve(1)
.then((x) => x + 1)
.then((x) => {
throw new Error(String(x));
})
.then(() => console.log("skipped"))
.catch((e) => {
console.log("caught", e.message);
return 10;
})
.then((x) => console.log("after", x));
caught 2, then after 10
The answer is "caught 2, then after 10".
• The value becomes 2 after the first then.
• The throw rejects the chain. The rejection skips the then that logs skipped.
• catch handles the error and logs caught 2. It returns 10.
• Returning a value from catch fulfills the next promise, so the chain continues and logs after 10.
The tempting option "caught 2 only; the chain stops after catch" is wrong because catch recovers the chain when it returns a value.
Read more