![Introducing Enhanced Alert Actions and Triage Functionality](https://cdn.sanity.io/images/cgdhsj6q/production/fe71306d515f85de6139b46745ea7180362324f0-2530x946.png?w=800&fit=max&auto=format)
Product
Introducing Enhanced Alert Actions and Triage Functionality
Socket now supports four distinct alert actions instead of the previous two, and alert triaging allows users to override the actions taken for all individual alerts.
thenify
Advanced tools
Package description
The thenify npm package is designed to convert Node.js callback-style functions to functions that return a promise. This is particularly useful when working with older Node.js APIs or third-party libraries that do not natively support promises, allowing developers to write cleaner, more modern asynchronous code using async/await or .then() syntax.
Converting a callback-style function to a promise-returning function
This feature allows you to wrap a traditional Node.js callback-style function, such as `fs.readFile`, in a way that it returns a promise. This enables the use of `.then()` and `.catch()` for cleaner asynchronous control flow.
const thenify = require('thenify');
const fs = require('fs');
const readFile = thenify(fs.readFile);
readFile('example.txt', 'utf8').then(contents => {
console.log(contents);
}).catch(err => {
console.error(err);
});
Introduced in Node.js 8, `util.promisify` is a built-in function that converts a callback-based function into a promise-based one. It serves a similar purpose to thenify but is built into the Node.js runtime. Unlike thenify, it does not need to be installed as an external package, offering a more integrated solution for modern Node.js versions.
Bluebird is a comprehensive promise library that offers a wide range of features for working with promises, including but not limited to converting callback-style functions into promises. It provides a method called `.promisify()` which is similar to thenify's functionality. Bluebird promises are known for their performance and additional utility methods not found in native promises, making it a more feature-rich, albeit heavier, alternative.
Pify is another npm package that converts callback-based functions into promises. It offers a simple and lightweight approach similar to thenify but with additional options for customizing the behavior of the promisified function, such as the ability to handle multiple callback arguments or to exclude certain functions from promisification. Pify provides a balance between simplicity and configurability.
Readme
Promisify a callback-based function using any-promise
.
bluebird
Array
, also support change the behavior by options.multiArgs
An added benefit is that throw
n errors in that async function will be caught by the promise!
Promisifies a function.
options
are optional.
options.withCallback
- support both callback and promise style, default to false
.
options.multiArgs
- change the behavior when callback have multiple arguments. default to true
.
true
- converts multiple arguments to an arrayfalse
- always use the first argumentArray
- converts multiple arguments to an object with keys provided in options.multiArgs
Turn async functions into promises
var thenify = require('thenify');
var somethingAsync = thenify(function somethingAsync(a, b, c, callback) {
callback(null, a, b, c);
});
var thenify = require('thenify');
var somethingAsync = thenify(function somethingAsync(a, b, c, callback) {
callback(null, a, b, c);
}, { withCallback: true });
// somethingAsync(a, b, c).then(onFulfilled).catch(onRejected);
// somethingAsync(a, b, c, function () {});
or use thenify.withCallback()
var thenify = require('thenify').withCallback;
var somethingAsync = thenify(function somethingAsync(a, b, c, callback) {
callback(null, a, b, c);
});
// somethingAsync(a, b, c).then(onFulfilled).catch(onRejected);
// somethingAsync(a, b, c, function () {});
var thenify = require('thenify');
var promise = thenify(function (callback) {
callback(null, 1, 2, 3);
}, { multiArgs: false });
// promise().then(function onFulfilled(value) {
// assert.equal(value, 1);
// });
var thenify = require('thenify');
var promise = thenify(function (callback) {
callback(null, 1, 2, 3);
}, { multiArgs: [ 'one', 'tow', 'three' ] });
// promise().then(function onFulfilled(value) {
// assert.deepEqual(value, {
// one: 1,
// tow: 2,
// three: 3
// });
// });
FAQs
Promisify a callback-based function
We found that thenify demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 3 open source maintainers collaborating on the project.
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Product
Socket now supports four distinct alert actions instead of the previous two, and alert triaging allows users to override the actions taken for all individual alerts.
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