util.promisify | Polyfill/shim for util.promisify in node versions < v8 | Reactive Programming library
kandi X-RAY | util.promisify Summary
kandi X-RAY | util.promisify Summary
Polyfill for util.promisify in node versions < v8. node v8.0.0 added support for a built-in util.promisify: This package provides the built-in util.promisify in node v8.0.0 and later, and a replacement in other environments.
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util.promisify Key Features
util.promisify Examples and Code Snippets
Lines of Code : 64License : Strong Copyleft (CC BY-SA 4.0)
Copyasync function getGoogleApiToken() {
let jwtClient = new google.auth.JWT(...);
await jwtClient.authorize(function (err, tokens) {
if (err) {
console.log(err);
return;
} else {
console.log("Successfully connectvar mysql = require('mysql');
// node -v must > 8.x
var util = require('util');
// !!!!! for node version < 8.x only !!!!!
// npm install util.promisify
//require('util.promisify').shim();
// -v < 8.x has problem with asynconst { promisify } = require('util');
test('promisify(setTimeout)', () => {
return promisify(setTimeout)(0).then(() => {
expect(true).toBe(true);
});
});
const express = require("express");
consnpm install --save util.promisify
const util = require('util');
require('util.promisify').shim();
Community Discussions
Trending Discussions on util.promisify
QUESTION
I used to have this:
...ANSWER
Answered 2022-Apr-11 at 03:18You're looking for
QUESTION
When using a form to upload some files I can see in dev tools in the network inspector and specifically in the payload tab under form data, in view source.
Note the below includes the file name including the path twoItems/Screenshot... its this path twoItems I need to access in the API but can't.
Security? Err why do I want this? It's for a document management app, users cant be creating folders in the browser and then add the files. They need to drag and drop nested directories of files.
...ANSWER
Answered 2022-Mar-12 at 18:09You need to set the busboy's option:
QUESTION
I am using this pattern to execute bash scripts:
...ANSWER
Answered 2022-Feb-01 at 02:25exec will execute a command line (a string) by feeding it to a shell. You have two options:
Not great in this use-case: use
execwith a string that incorporates arguments:
QUESTION
I am having serious issues setting up docker. When I run sudo docker-compose up -d and sudo docker-compose logs -f my app is logging sh: 1: nodemon: not found over and over again. The problem is that I don't even have nodemon anymore : /
If I run the exact same project with npm start and manually turn on mysql it works.
My dockerfile:
...ANSWER
Answered 2022-Jan-26 at 17:06Delete package lock file and Try using this command to rebuild the container.
QUESTION
I'm new to using Discord.js, and after looking through the basic guide/docs, I'm still somehow confused as to how to allow event and/or command files to access the main client instance. For example, I may want to call client.database within an event file in order to make use of CRUD operations.
I did some digging on my own, and I saw that someone had implemented this by getting rid of the .execute function in each of the event files, and passing in event.bind(null, client) to client.on(). I don't really understand it though:
https://github.com/KSJaay/Alita/blob/fe2faf3c684227e29fdef228adaae2ee1c87065b/Alita.js https://github.com/KSJaay/Alita/blob/master/Events/guildMemberRemove.js
My Main File:
...ANSWER
Answered 2022-Jan-21 at 18:41Get the client using .client on an object, an Interaction in this case
QUESTION
Node.js uses threads from worker pool to perform I/O operations. If I need to count the number of characters in many files concurrently (using Promise.all), is it safe to update the totalNumberOfChars variable which is common to all promisifed file read operations? Because a separate thread may be used for each read operation can totalNumberOfChars be incorrect?
This is the code:
...ANSWER
Answered 2022-Jan-19 at 16:16This is safe, because what's inside this function:
QUESTION
I entered the command npm install -D tailwind css postcss autoprefixer vite in VS-Code.
My environment is:
- NPM version:
8.1.2 - Node.js version:
16.13.1
Which resulted in following warning:
...ANSWER
Answered 2022-Jan-05 at 14:53Its not a breaking error, just means that some functionalities might not work as expected.
As this npm WARN EBADENGINE required: { node: '>=0.8 <=9' } line shows, the required node version for this package to work as intended is between 0.8 and 9 but you have node 16.
QUESTION
I am attempting to util.promisify the bonjour npm package. This is the original use case described in the docs:
ANSWER
Answered 2022-Jan-07 at 22:21That's because the bonjour callback does not comply with the Node.js callback signature (err, data) => {}. Indeed, bonjour.find's callback has the success value as first parameter. You could wrap it in a proxy function like this:
QUESTION
I would like to use util.promisify to promisify custom functions. However, util.promisify works for node-style methods that have an error-first callback as the last argument. How can I adjust my custom functions so that they will work with util.promisify?
...ANSWER
Answered 2022-Jan-05 at 07:48How can I adjust my custom functions so that they will work with util.promisify?
My first choice would be to just add a new API that returns a promise - that wraps your own API inside a new Promise constructor. Then, you have a documented, promise-returning API that is obvious how to use and requires no extra steps by the client to use it.
But, if you really want to make something compatible with util.promisify(), read on...
If you had shown the calling convention for your function that you want util.promisify() to work with, we could have offered a custom implementation specifically for that code, but since you didn't here's an example implementation below.
The general concept is described here in the doc, though I would not exactly say the doc is very clear about how things work. Here's an example.
Suppose you have a timer function that takes three arguments in this order:
QUESTION
I want my http respond script to respond with data from my SQL server. So I can use AJAX to update HTML with data from my SQL server. And I cant find a way to do this. I'm just learning about async and I have a feeling that if I can save the output of my async function to a global var then it will work. Any help would save my headache.
My simple Listen script is:
...ANSWER
Answered 2021-Nov-17 at 18:38Do NOT use any globals or shared, higher scoped variables for your asynchronous result in a server. Never do that. That is an anti-pattern for good reason because that can create intermittent concurrency problems because more than one request can be in process at the same time on your server so these would cause conflicting access to those variables, creating intermittent, very-hard-to-debug problems. I repeat again, NEVER.
You didn't describe an exact situation you are trying to write code for, but here's an example.
Instead, you use the result inside the context that it arrives from your asynchronous call. If you can use await, that generally makes the coding cleaner.
Here's a simple example:
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