CODEWITHSUNDEEP
javascripterror-handlingpromise
ThomasReggi
ThomasReggi

Reputation: 59525

Rejecting error after opening `.catch`

Are these two code blocks the same? I'm looking to open up .catch() and log the error but I still want the error to be "uncaught", can I just return it? Or does it need to be wrapped in a Promise.reject()?

Block A:

soSomething()
    .then(() => {
        return "meow"
    })
    .catch(() => {
        console.log(err)
        return err
    })

Block B:

soSomething()
    .then(() => {
        return "meow"
    })
    .catch(() => {
        console.log(err)
        return Promise.reject(err)
    })

Upvotes: 0

Views: 24

Answers (1)

guest271314
guest271314

Reputation: 1

The two patterns are not the same.

The first handles the error and returns a resolved Promise, reaching the first function parameter at a chained .then().

The second example returns a rejected Promise, reaching the second function parameter at a chained .then() or .catch().

I'm looking to open up .catch() and log the error but I still want the error to be "uncaught", can I just return it?

The first pattern should meet requirement.

Upvotes: 3

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