npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

foreachasync

v5.1.3

Published

A node- and browser-ready async (now with promises) counterpart of Array.prototype.forEach

Downloads

2,449,938

Readme

forEachAsync.js

| A Root project

Analogous to [].forEach, but handles items asynchronously with a final callback passed to then.

This is the most essential piece of the ArrayAsync package.

For cases where you want to loop through batches of items at once (as opposed to strictly one-by-one as forEachAsync does), check out forAllAsync and lateral.

For cases where you want to loop through all items at once and we able to know when they're all done see join

v5.x

We jumped from 3.x to 5.x because I'm considering creating a backwards-and-forwards compatible 4.x that uses AngularJS-style function introspection to allow for having the next param. Straight up, that's probably a bad idea and waste of time so I hope I don't actually do it.

Screencast

https://youtu.be/O7egvEz4scA

Usage

  // EXAMPLE ASYNC FUNCTION

  function getPicsAsync(animal) {
    var flickerApi = "http://api.flickr.com/services/feeds/photos_public.gne?tagmode=any&format=json&tags=" + animal;

    return requestAsync({ url: flickerApi });
  }
  forEachAsync(['dogs', 'cats', 'octocats'], function (element) {
    return getPicsAsync(element);
  }).then(function () {
    // then after all of the elements have been handled
    // the final callback fires to let you know it's all done
    console.log('All requests have finished');
  });

Supplying your own Promises Implementation

If native ES6 promises are not available, then you should supply your own Promises/A+ implementation like so:

  forEachAsync = forEachAsync.create(window.Promise || require('bluebird'));

Browser Installation

You can install from bower:

bower install --save [email protected]

Or download the raw file from https://git.coolaj86.com/coolaj86/foreachasync.js/raw/branch/master/foreachasync.js:

wget https://git.coolaj86.com/coolaj86/foreachasync.js/raw/branch/master/foreachasync.js
(function () {
  'use strict';

  var forEachAsync = window.forEachAsync;

  // do stuff ...
}());

Note: If you need both 3.x/4.x and 5.x version of forEachAsync in the browser... good luck with that...

Node Installation

npm install --save [email protected]

API

forEachAsync(array, callback[, thisArg])

Parameters

  • array Array of elements to iterate over
  • callback Function to execute for each element, takes 4 arguments
    • element a single element of the aforementioned array
    • index the index of the current element
    • array the same array mentioned above
  • thisArg Object to use as this when executing callback

forEachAsync#then(done)

Parameters

  • then is in the return value of forEachAsync and accepts a final done callback.
    • done called after forEachAsync is complete, takes no arguments

Internal API

forEachAsync.__BREAK

This is used internally for the purposes of the ArrayAsync library.

Please don't break stuff; use ArrayAsync.someAsync or ArrayAsync.everyAsync instead.