I have a redux action function that returns a promise. Inside that function body, there is another async function that returns a callback when it finished the call. Then I call this function in …
Tag: es6-promise
Alternative for Promise.allSettled
I am currently using Promise.allSettled to wait for all my promises to finish(irrespective of whether they resolve or get rejected). Since my project is compliant to Node v12.3.1 I am unable to use this? What other simple alternatives can I use. Sample code: Note: Promise.allSettled is available from Node version >12.9. Adding shims is also not an option. Answer There’s
when I learned about microtask and Promise , I came across a behavior I don’t understand
I didn’t return something in then() callback, In my opinion the output should be 1 5 7 2 6 3 4,but the result is 1 2 5 3 6 7 4, who can tell me why Promise.resolve().then(function() { console….
How to return a promise resolved from a callback
I have an issue with my promise logic (still pretty new to JS), and I cannot find what is wrong. Looking at how hard it is for me to do what I want, I can only guess that’s it’s not the correct way to …
JS how to reject wrapper promise from inside one?
how to reject wrapper promise from inside one or? in other words, how to make number ‘3’ never printed? Current output: 1 2 3 Expected output: 1 2 new Promise(function(resolve, reject) { console….
Javascript Array of Functions get auto executed
I need to make a sequence of Promises that are executed in a queue. They are dynamic so I need to put them in an array (I have found an article that explains how to). The problem is that my array of …
Firebase Realtime Database – Determine if user has access to path
I have updated my Firebase Realtime Database access rules, and have noticed some clients now tries to access paths they do not have access to. This is ok – but my problem is that my code stops after …
Unexpected unhandledRejection event for promise which rejection does get handled
Updated, I’ve now tried explaining the behavior I’m seeing, but it’d still be great to have an answer from a credible source about the unhandledRejection behavor. I’ve also started a discussion thread on Reddit. Why do I get an unhandledRejection event (for “error f1”) in the following code? That’s unexpected, because I handle both rejections in the finally section of
Await functions but do them synchrony, then call the last function
So I am working with Vue, Node and typescript. I am fetching data that all my other functions are needing, so getDataForFunction123() needs an await and its fine. Then I have 3 functions that is …
Resolving an array or promises and getting the result
I’m attempting to map and format data to render it into a table. I have an array of promises that I’m attempting to resolve with Promise.all(). but it seems to not be returning the result of the …