How to make React Redux async action return a promise?

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 …

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 …

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 …

Filtering an array returned from Promise

I am porting the following code: function FindDevices() { let ports = portLister.list(); let devices = [] for (port of ports) { try { device = new Device(port); // throws if not valid …

Javascript: how to create an infinite-loop of promises?

I want to write in Javascript the following pseudo-code: function asyncOperation() { return new Promise((resolve, reject) => { …. } } while (true) { result = asyncOperation() …