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Showing posts with the label Async Await

Mqtt Async Wait For Messagse Then Respond To Http Post Request

I am new to node.js am trying to make a webhook, where I get an HTTP post request and want to send … Read more Mqtt Async Wait For Messagse Then Respond To Http Post Request

Getting Api Call In Node8.10 In Lambda Results In Promise And Undefined

I have a Lambda function written in Node8.1 in which I'm trying to get an array of objects (pho… Read more Getting Api Call In Node8.10 In Lambda Results In Promise And Undefined

Firebase: How To Get The Data When Child_added Complete

I have a case when I need to fetch all event objects. Each event object has a property city_id whic… Read more Firebase: How To Get The Data When Child_added Complete

What Is The Difference Between Async Generators And Observables?

Async generators: An example case is a readable stream Observables: A fundamental protocol for proc… Read more What Is The Difference Between Async Generators And Observables?

Why Do Javascript Functions Need To Have The Keyword "async"? Isn't The "await" Keyword Enough?

For instance, why does the function below need to have 'async'? Isn't using await speci… Read more Why Do Javascript Functions Need To Have The Keyword "async"? Isn't The "await" Keyword Enough?

Method Executed Before 'await' Method Complete

Trying to perform setState after the value return from checkPermissions(), however async-await didn… Read more Method Executed Before 'await' Method Complete

What Is The Operator Precedence Of Await?

In Javascript certain operators are processed before others: 1 + 2 * 3 // 1 + (2 * 3) // 7 because … Read more What Is The Operator Precedence Of Await?

Execute Promise In Synchronous Batches Javascript

I have a promise function that receives a row from rows array to a remote server. const post = (row… Read more Execute Promise In Synchronous Batches Javascript

Pg Client.query() Does Not Wait At The Await

I am don't understand why the await in front of a pg client request does not seem to work as th… Read more Pg Client.query() Does Not Wait At The Await

Really Confused About Promise Being Returned From Async Function

So I do know that async function returns a pending promise as soon as it hits the await keyword and… Read more Really Confused About Promise Being Returned From Async Function

Custom Thenables: Can I Create My Own Objects With A "then" Method?

I'm wondering if custom 'thenables' (aka an object with a .then() method) are approved/… Read more Custom Thenables: Can I Create My Own Objects With A "then" Method?

Different Behavior Of Async Functions When Assigning Temporary To Variable

Why a different result in the following cases? The first example works correctly, returns an array … Read more Different Behavior Of Async Functions When Assigning Temporary To Variable

What Is The Best Way To Use Async/await Inside Onauthstatechanged() Of Firebase?

I'm using Firebase authentication with async/await in React Native. I'm looking for a bette… Read more What Is The Best Way To Use Async/await Inside Onauthstatechanged() Of Firebase?

How Can I Use Async Generators In Javascript?

I have an api thats going to return a cursor for fetching more data. I've mocked it out like th… Read more How Can I Use Async Generators In Javascript?

Promise Continues After Error

I have some async code that needs to stop in case of error but keeps executing: async saveCoupons({… Read more Promise Continues After Error

Using Promises To Await Triggered Events

In the following code, thing is an external object that I don't control; I can't change how… Read more Using Promises To Await Triggered Events

Catching All Promise Rejections In An Async Function In Javascript

I've ran into an issue with catching all the errors when multiple promises throw rejection erro… Read more Catching All Promise Rejections In An Async Function In Javascript

Async Await Does Not Work As Expected

Currently we are storing short strings as keys. These keys correspond to long values which are labe… Read more Async Await Does Not Work As Expected

Asyncfunction Is Not Defined, Yet Mdn Documents It's Usage

There is an article AsyncFunction - JavaScript on MDN. It shows the following snippet: new AsyncFun… Read more Asyncfunction Is Not Defined, Yet Mdn Documents It's Usage

Nodejs "readline" Module Not Outputting Prompt

Using NodeJS, I was trying to make a 'note' manager just for fun, but when I tried to use r… Read more Nodejs "readline" Module Not Outputting Prompt