I know that all functions marked with async return a Promise object, even if it's not returned explicitly. So I made the following experiment: async function getPromise() { setTimeout(() => { return "value"; }, 2000); } async function implicitPromiseTest() {…
If I call an async function that doesn’t explicitly return anything from the await, will it return a resolved Promise? Or Void? Something else? For example an IIFE like this, or this but it being called in the global scope…
I created a SOAP server in Node.js const soap = require('soap'); const http = require('http'); const XMLWriter = require('xml-writer'); const service = { ImpDispatcherService: { ImpDispatcher: { performTest: function (args) { const xw = new XMLWriter(true); xw.startDocument(); xw.startElement('result'); queryDatabase(args.parameter1, xw).then(success…
I'm implementing an asynchronous function to fetch and show JSON data from an API. In order to handle errors properly, I'm using a try/catch block. But I'm getting an "Uncaught (in promise)" Error - and I don't understand why. This…
I have a function which generates reports from the data of an order/request. The function inside has a loop to see the total number of impressions to make and then a series of actions to do. The problem is that…
I recently added jsdocs to my project and since then I have eslint telling me that 'await has no effect on this kind of expression' const result = await someAsyncFunction(); // await has no effect console.log(result.property); Removing the await keyword…
I had code below from javascript.info async/await tutorial and I noticed it has used new Promise next to await, this is the cut from the code: await new Promise((resolve, reject) => setTimeout(resolve, 3000)); img.remove(); link to code so it's possible…
I've tried multiple versions of example code but can never seem to get something that guarantees completion of the query set before other code commences. I was under the impression that 'await' makes the query complete before continuing. I'm running…
I have tried to implement promise chaining in Javascript with 3 simple promises. First promise I am resolving and last 2 I am rejecting. Till 2nd rejection it is working fine. But after the catch statement it is throwing error…
I am trying to catch the rejection reason of an already rejected promise, but I am getting an uncaught error. I have spent some time studying promises, but still do not understand why the error occurs. The purpose of this…