call-me-maybe
Advanced tools
Package description
The 'call-me-maybe' npm package is designed to handle callbacks and promises in a unified way. It allows developers to write functions that can return a promise if no callback is provided, or execute a callback if one is given. This flexibility makes it easier to work with asynchronous code in JavaScript.
Handling callbacks and promises
This feature allows a function to handle both callbacks and promises. If a callback is provided, it is called with the result; otherwise, a promise is returned. The code sample demonstrates how to implement a simple asynchronous operation that can be used either way.
const maybe = require('call-me-maybe');
function asyncOperation(callback) {
return maybe(callback, new Promise((resolve, reject) => {
setTimeout(() => resolve('Done!'), 1000);
}));
}
// Using with callback
asyncOperation(result => console.log(result));
// Using as a promise
asyncOperation().then(result => console.log(result));Bluebird is a comprehensive promise library that provides a rich set of features for working with promises. It includes utilities for converting callback-based APIs to promises, which is similar to what 'call-me-maybe' offers, but it is more feature-rich and includes optimizations for performance.
Pify is a module that converts callback-based functions or modules to return promises. It is similar to 'call-me-maybe' in that it helps bridge the gap between callbacks and promises, but it focuses solely on converting existing functions rather than handling both styles in new functions.
Readme
Let your JS API users either give you a callback or receive a promise.
var maybe = require("call-me-maybe")
module.exports = function asyncFunc (cb) {
return maybe(cb, new Promise(function(resolve, reject) {
// ...
}))
}
If the callback cb is truthy, returns undefined and will call cb when promise is settled. The parameters passed to cb are standard error-first:
promise is fulfilled, then it is called with the result of the promise: cb(null, result)promise is rejected, then it is called with the rejection error: cb(err)If cb is falsey, then promise is returned.
FAQs
Let your JS API users either give you a callback or receive a promise
The npm package call-me-maybe receives a total of 5,377,922 weekly downloads. As such, call-me-maybe popularity was classified as popular.
We found that call-me-maybe demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
Did you know?
Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.
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.
Security News
Polyfill.io has been serving malware for months via its CDN, after the project's open source maintainer sold the service to a company based in China.
Security News
OpenSSF is warning open source maintainers to stay vigilant against reputation farming on GitHub, where users artificially inflate their status by manipulating interactions on closed issues and PRs.