Is there a issue by promise-chaining? about promise-polyfill HOT 4 CLOSED

@martinoppitz I am having a little trouble following your test. What is the expected behavior for each test?

from promise-polyfill.

If the then comes first, the test failed. Why?

from promise-polyfill.

Promise chains execute from top to bottom. Once a part of the chain is skipped, it doesn't go back. In your first example, the first httpPromise gets rejected, so the first then is skipped (because rejected is an error) and it goes to the first catch (after the then). Eventually the catch returns a resolved Promise, but the firstthen has already been skipped. It looks for another then, but there isn't one. The Promise never gets resolved because the call resolve was in the first then (that was skipped).

I may be missing something, but does that make sense? Does the first test pass with some other library? I tried with native Promise and it fails there too.

from promise-polyfill.

Thanks for the explanation. I think I now understand it. 👍

from promise-polyfill.