Node.js Error Handling
Q:- How to handle error/exceptions with Promises in Node.js?
First way, by using promises you can chain different operations, and handle errors at the end.
doSomething() .then(doSomething1()) .then(doSomething2()) .catch(err => console.error(err))
Second way, by using promises you can handle errors locally.
doSomething
.then((() => {
return doSomething1().catch(err => {
//handle error
throw err //break the chain!
})
})
.then((() => {
return doSomething2().catch(err => {
//handle error
throw err //break the chain!
})
})
.catch(err => console.error(err))