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Top open-source packages with the most dependent projects on GitHub

Vishnu Damwala
A human being currently living in India🇮🇳 on Earth. Founder of MeshWorld, a web geek, an industry experienced web developer & tutor/instructor currently lives in Surat City.
・2 min read

GitHub in its annual State of the Octoverse for 2019 announced the top open-source packages with the most dependent projects.

Lodash

Lodash is a JavaScript utility library and a very popular NPM package.

It provides utility functions for common programming tasks that make JavaScript easier by taking the hassle out of working with arrays, numbers, objects, strings, dates, etc.

GitHub logo lodash / lodash

A modern JavaScript utility library delivering modularity, performance, & extras.

lodash

Site | Docs | FP Guide | Contributing | Wiki | Code of Conduct | Twitter | Chat

The Lodash library exported as a UMD module.

Generated using lodash-cli:

$ npm run build
$ lodash -o ./dist/lodash.js
$ lodash core -o ./dist/lodash.core.js

Download

Lodash is released under the MIT license & supports modern environments.
Review the build differences & pick one that’s right for you.

Installation

In a browser:

<script src="lodash.js"></script>

Using npm:

$ npm i -g npm
$ npm i lodash

Note: add --save if you are using npm < 5.0.0

In Node.js:

// Load the full build.
var _ = require('lodash');
// Load the core build.
var _ = require('lodash/core');
// Load the FP

It has a ton of helper functions which help you to be more productive and save a lot of time.

The library is very light (~24kB gzipped), efficient, popular and loved (more than 42K stars on Github).

It is used by more than 5.4m repositories on Github.

Express

Express is a minimal and flexible Node.js web application framework based on MVC architecture that provides a robust set of features for web and mobile applications.

MongoDB = database
Express.js = back-end web framework
Angular = front-end framework
Node.js = back-end platform / web framework

GitHub logo expressjs / express

Fast, unopinionated, minimalist web framework for node.

Express Logo

Fast, unopinionated, minimalist web framework for node.

NPM Version NPM Downloads Linux Build Windows Build Test Coverage

const express = require('express')
const app = express()
app.get('/', function (req, res) {
  res.send('Hello World')
})
app.listen(3000)

Installation

This is a Node.js module available through the npm registry.

Before installing, download and install Node.js Node.js 0.10 or higher is required.

If this is a brand new project, make sure to create a package.json first with the npm init command.

Installation is done using the npm install command:

$ npm install express

Follow our installing guide for more information.

Features

  • Robust routing
  • Focus on high performance
  • Super-high test coverage
  • HTTP helpers (redirection, caching, etc)
  • View system supporting 14+ template engines
  • Content negotiation
  • Executable for generating applications quickly

Docs & Community

Express is inspired by the popular Ruby framework, Sinatra. It provides a number of robust features for building single and multi-page web applications.

It has more than 46K stars on Github.

It is used by more than 5.2m repositories on Github.

Vision Media Debug

A JavaScript debugging utility after Node.js core's debugging technique. Works in Node.js and web browsers.

The tool aims at both libraries and applications. Besides Node.js, Debug is also suitable for working in browsers.

GitHub logo visionmedia / debug

A tiny JavaScript debugging utility modelled after Node.js core's debugging technique. Works in Node.js and web browsers

debug

Build Status Coverage Status Slack OpenCollective OpenCollective

A tiny JavaScript debugging utility modelled after Node.js core's debugging technique. Works in Node.js and web browsers.

Installation

$ npm install debug

Usage

debug exposes a function; simply pass this function the name of your module, and it will return a decorated version of console.error for you to pass debug statements to. This will allow you to toggle the debug output for different parts of your module as well as the module as a whole.

Example app.js:

var debug = require('debug')('http')
  , http = require('http')
  , name = 'My App';
// fake app
debug('booting %o', name);
http.createServer(function(req, res){
  debug(req.method + ' ' + req.url);
  res.end('hello\n');
}).listen(

It has more than 8K stars on Github.

It is used by more than 5.3m repositories on Github.

Inherits

Easy simple tiny inheritance in JavaScript.

This package exports standard inherits from node.js util module in a node environment. It also provides alternative browser-friendly implementation through browser field.

GitHub logo isaacs / inherits

Easy simple tiny inheritance in JavaScript

Browser-friendly inheritance fully compatible with standard node.js inherits.

This package exports standard inherits from node.js util module in node environment, but also provides alternative browser-friendly implementation through browser field. Alternative implementation is a literal copy of standard one located in standalone module to avoid requiring of util. It also has a shim for old browsers with no Object.create support.

While keeping you sure you are using standard inherits implementation in node.js environment, it allows bundlers such as browserify to not include full util package to your client code if all you need is just inherits function. It worth, because browser shim for util package is large and inherits is often the single function you need from it.

It's recommended to use this package instead of require('util').inherits for any code that has chances to be used not only in node.js but in browser too.

usage

var inherits =

It is used by more than 5.1m repositories on Github.

Zeit MS

This package is used to easily convert various time formats to milliseconds.

Works both in Node.js and in the browser

GitHub logo vercel / ms

Tiny milisecond conversion utility

ms

Build Status Join the community on Spectrum

Use this package to easily convert various time formats to milliseconds.

Examples

ms('2 days')  // 172800000
ms('1d')      // 86400000
ms('10h')     // 36000000
ms('2.5 hrs') // 9000000
ms('2h')      // 7200000
ms('1m')      // 60000
ms('5s')      // 5000
ms('1y')      // 31557600000
ms('100')     // 100
ms('-3 days') // -259200000
ms('-1h')     // -3600000
ms('-200')    // -200

Convert from Milliseconds

ms(60000)             // "1m"
ms(2 * 60000)         // "2m"
ms(-3 * 60000)        // "-3m"
ms(ms('10 hours'))    // "10h"

Time Format Written-Out

ms(60000, { long: true })             // "1 minute"
ms(2 * 60000, { long: true

It is used by more than 5m repositories on Github.

Safe Buffer

The goal of this package is to provide a safe replacement for the node.js Buffer.

GitHub logo feross / safe-buffer

Safer Node.js Buffer API

safe-buffer travis npm downloads javascript style guide

Safer Node.js Buffer API

Use the new Node.js Buffer APIs (Buffer.from, Buffer.alloc Buffer.allocUnsafe, Buffer.allocUnsafeSlow) in all versions of Node.js.

Uses the built-in implementation when available.

install

npm install safe-buffer

usage

The goal of this package is to provide a safe replacement for the node.js Buffer.

It's a drop-in replacement for Buffer. You can use it by adding one require line to the top of your node.js modules:

var Buffer = require('safe-buffer').Buffer
// Existing buffer code will continue to work without issues:
new Buffer('hey', 'utf8')
new Buffer([1, 2, 3], 'utf8')
new Buffer(obj)
new Buffer(16) // create an uninitialized buffer (potentially unsafe)
// But you can use these new explicit APIs to make clear what you want:

Buffer.from(

Node semver

The semantic version parser for Node used by npm

GitHub logo npm / node-semver

The semver parser for node (the one npm uses)

semver(1) -- The semantic versioner for npm

Install

npm install semver

Usage

As a node module:

const semver = require('semver')
semver.valid('1.2.3') // '1.2.3'
semver.valid('a.b.c') // null
semver.clean('  =v1.2.3   ') // '1.2.3'
semver.satisfies('1.2.3', '1.x || >=2.5.0 || 5.0.0 - 7.2.3') // true
semver.gt('1.2.3', '9.8.7') // false
semver.lt('1.2.3', '9.8.7') // true
semver.minVersion('>=1.0.0') // '1.0.0'
semver.valid(semver.coerce('v2')) // '2.0.0'
semver.valid(semver.coerce('42.6.7.9.3-alpha')) // '42.6.7'

You can also just load the module for the function that you care about, if you'd like to minimize your footprint.

// load the whole API at once in a single

It is used by more than 4.8m repositories on Github.

Mime Db

A database of all mime types. It consists of only a single, public JSON file which does not include any logic.

It aggregates data from the following sources:

GitHub logo jshttp / mime-db

Media Type Database

mime-db

NPM Version NPM Downloads Node.js Version Build Status Coverage Status

This is a database of all mime types It consists of a single, public JSON file and does not include any logic allowing it to remain as un-opinionated as possible with an API It aggregates data from the following sources:

Installation

npm install mime-db

Database Download

If you're crazy enough to use this in the browser, you can just grab the JSON file using jsDelivr. It is recommended to replace master with a release tag as the JSON format may change in the future.

https://cdn.jsdelivr.net/gh/jshttp/mime-db@master/db.json

Usage

var db = require('mime-db')

// grab data on .js files
var data = db['application/javascript']

Data Structure

The JSON file is a map lookup for lowercased mime types. Each mime type has the following properties:

  • .source - where the mime type is defined If not set, it's probably a custom media type
    • apache -…

It is used by more than 4.8m repositories on Github.

QS

A query string parsing and stringifying library with nesting support.

GitHub logo ljharb / qs

A querystring parser with nesting support

qs Version Badge

Build Status dependency status dev dependency status License Downloads

npm badge

A querystring parsing and stringifying library with some added security.

Lead Maintainer: Jordan Harband

The qs module was originally created and maintained by TJ Holowaychuk.

Usage

var qs = require('qs');
var assert = require('assert');
var obj = qs.parse('a=c');
assert.deepEqual(obj, { a: 'c' });
var str = qs.stringify(obj);
assert.equal(str, 'a=c');

Parsing Objects

qs.parse(string, [options]);

qs allows you to create nested objects within your query strings, by surrounding the name of sub-keys with square brackets []. For example, the string 'foo[bar]=baz' converts to:

assert.deepEqual(qs.parse('foo[bar]=baz'), {
    foo: {
        bar: 'baz'
    }
});

It is used by more than 4.7m repositories on Github.

Image Credit:
GitHub Blog

Discussion (1)

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Jon Schlinkert

Micromatch is used by 7.5 million github.com/micromatch/micromatch/