pinkie-promise

What is pinkie-promise?

The pinkie-promise npm package is a lightweight Promise implementation for environments that do not have a native Promise support. It uses the 'pinkie' package as its core to provide a minimal Promise polyfill.

What are pinkie-promise's main functionalities?

Promise creation and usage

This feature allows users to create new promises and handle their resolution or rejection. The code sample demonstrates how to create a new promise and use 'then' and 'catch' methods to handle its outcome.

const pinkiePromise = require('pinkie-promise');

const promise = new pinkiePromise(function(resolve, reject) {
  // Asynchronous operation here
  if (/* operation successful */) {
    resolve('Success!');
  } else {
    reject('Failure!');
  }
});

promise.then(function(value) {
  console.log(value); // 'Success!'
}).catch(function(reason) {
  console.log(reason); // 'Failure!'
});

Chaining promises

This feature demonstrates how promises can be chained to perform a sequence of asynchronous operations where each step waits for the previous one to complete.

const pinkiePromise = require('pinkie-promise');

pinkiePromise.resolve(1)
  .then(function(value) {
    return value + 1;
  })
  .then(function(value) {
    return value + 1;
  })
  .then(function(value) {
    console.log(value); // 3
  });

Other packages similar to pinkie-promise

bluebird

Bluebird is a full-featured Promise library with a focus on innovative features and performance. It is significantly larger and more feature-rich than pinkie-promise, offering utilities like Promise.map, .spread, and .finally, as well as advanced features like cancellation.

q

Q is one of the earliest Promise libraries for JavaScript. It provides a robust set of Promise-related tools but is heavier compared to pinkie-promise. It includes features like long stack traces and custom methods for handling collections of promises.

es6-promise

ES6-Promise is a polyfill for the ES6 Promise specification. It aims to provide a close approximation to the native implementation of Promises in environments that lack such support. It is more widely used than pinkie-promise and has similar functionality but with a larger footprint.

README

pinkie-promise

ES2015 Promise ponyfill

Module exports global Promise object (if available) or pinkie Promise polyfill.

Install

$ npm install --save pinkie-promise

Usage

var Promise = require('pinkie-promise');

new Promise(function (resolve) { resolve('unicorns'); });
//=> Promise { 'unicorns' }

Related

• pify - Promisify a callback-style function

License

MIT © Vsevolod Strukchinsky