JSPM

The jsbn library is a fast, portable implementation of large-number math in pure JavaScript, enabling public-key crypto and other applications on desktop and mobile browsers.

utility box for ECMAScript language tools

Detect whether or not an object is a Typed Array

Base64 encoding/decoding in pure JS

Make your own error types!

Read/write IEEE754 floating point numbers from/to a Buffer or array-like object

Wrap those words. Show them at what columns to start and stop.

Implementation of JSON Web Signatures

Determine if an object is a Buffer

Require module from string

Safer Node.js Buffer API

get colors in your node.js console

Full featured Promises/A+ implementation with exceptionally good performance

Node.js Buffer API, for the browser

Unpipe a stream from all destinations

JSDoc parser

Fast deep equal

Resolve the path of a module like `require.resolve()` but from a given path

Hand-written ICU MessageFormat parser with compatible output as [`intl-messageformat-parser`](https://www.npmjs.com/package/intl-messageformat-parser) but 6 - 10 times as fast.

Basic cache object for storing key-value pairs.

ES2015 `Object.assign()` ponyfill

two functions: One that returns true, one that returns false

Get the native type of a value.

Efficient implementation of Levenshtein algorithm with locale-specific collator support.

The string_decoder module from Node core

the stream module from node core for browsers

OAuth 1 signing. Formerly a vendor lib in mikeal/request, now a standalone module.

Convert encodings, uses iconv-lite

HTTP response freshness testing

Iterator abstraction based on ES6 specification

Escape string for use in HTML

Environment agnostic nextTick polyfill

Check whether a string is a URL.

A cache for managing namespaced sub-caches

Create simple HTTP ETags

writable stream that concatenates strings or binary data and calls a callback with the result

Modern Buffer API polyfill without footguns

Utilities to help expose prettier output in linting tools

Full zlib module for the browser

HTTP methods that node supports

timers module for browserify

Treat a collection of Buffers as a single contiguous partially mutable Buffer.

Recursively iterates over specified directory, require()'ing each file, and returning a nested hash structure containing those modules.

Define a non-enumerable property on an object. Uses Reflect.defineProperty when available, otherwise Object.defineProperty.

Minimal async jobs utility library, with streams support

getpass for node.js

Simple RFC 6838 media type parser and formatter

Generates a base64 id

Generic extension manager for WebSocket connections

Returns true if the value is an object and not an array or null.

Operating system specific paths.

Fast and simple xml generator. Supports attributes, CDATA, etc. Includes tests and examples.

js function for hashing messages with MD5

Growl unobtrusive notifications

Manipulate the HTTP Vary header

parse a url with memoization

QRCodes, in the terminal

Node.JS path module

Returns true if a value exists, false if empty. Works with deeply nested values using object paths.

process information for node.js and browsers

Check if a value is a natural number

Babel plugin to transpile import() to a deferred require(), for node

Converter from any base to other any base

Wrap Streams2 instance into a HandleWrap

Creates a shallow clone of any JavaScript value.

Repeat the given string n times. Fastest implementation for repeating a string.

Mirror of mkdirp 0.5.2

This is lightweight memory stream module for node.js.

is that thing a function? Use this module to find out

quote and unquote strings. escapes internal quotes and slashes. Automatically decides whether to use single or double quotes.

Convert a typed array to a Buffer without a copy

An XML builder for node.js

JavaScript implementation of the BSER Binary Serialization

returns nonce

Edit a string with the users preferred text editor using $VISUAL or $ENVIRONMENT

Postgres bytea parser

node.js basic auth parser

Pluralize and singularize any word

Querystringify - Small, simple but powerful query string parser.

[](https://travis-ci.org/hunterloftis/stoppable)

prelude.ls is a functionally oriented utility library. It is powerful and flexible. Almost all of its functions are curried. It is written in, and is the recommended base library for, LiveScript.

Toggle current selected content in browser

Compressible Content-Type / mime checking

Babel Types is a Lodash-esque utility library for AST nodes

compose Koa middleware

Port of TweetNaCl cryptographic library to JavaScript

Returns true if the platform is windows. UMD module, works with node.js, commonjs, browser, AMD, electron, etc.

The map of HTTP status codes from the builtin http module

Serve directory listings

Range header field string parser

Returns true if a value is a plain object, array or function.

A JavaScript parser

Extend an object with the properties of additional objects. node.js/javascript util.

Isomorphic WHATWG Fetch API, for Node & Browserify

asynchronous file and directory operations for Node.js

For encoding to/from base64urls

a collection of useful streams

WebSocket protocol handler with pluggable I/O

HTTP proxying for the masses

printf, sprintf, and vsprintf for JavaScript

return the first event in a set of ee/event pairs

Detect if your code is running on an AWS Lambda server

API for combining call site modifiers

Utilities for the snapdragon parser/compiler.

Check that two PostCSS nodes share the same parent.

Takes JavaScript code, along with a config and returns the original code with tokens wrapped as configured.

A mirror of Facebook's Warning

Parse a passwd file into a list of users.

Generate a hex color from the given text

Join paths and globs.

A flow control lib small enough to fit on in a slide presentation. Derived live at Oak.JS

ECMAScript6 WeakMap polyfill

Get the command from a shebang

For adding, subtracting, and indexing discontinuous ranges of numbers

a fast, efficient buffer writer

A lightweight library that provides tools for organizing asynchronous code

qjobs is a simple and stupid queue job manager for nodejs

JSON.parse with context information on error

HTTP proxy tunneling agent. Formerly part of mikeal/request, now a standalone module.

Allow parsing of jsx

Safely get a dot-notated property within an object.

Port of the OpenBSD bcrypt_pbkdf function to pure JS

Command-Option-Argument: Yet another parser for command line options.

npm package for https://github.com/google/diff-match-patch

A simple MD4 hash function for JavaScript supports UTF-8 encoding.

Coalesce for JavaScript. Returns the first value that is not undefined or null.

Deprecate all the things

JSON Schema for HTTP Archive (HAR)

Normalize slashes in a file path to be posix/unix-like forward slashes. Also condenses repeat slashes to a single slash and removes and trailing slashes, unless disabled.

Object.fromEntries() ponyfill (in 6 lines)

Additional ESLint rules for ESLint directive comments.

A polyfill for the Resize Observer API

XMLHttpRequest for Node

Environment agnostic event emitter

Super-minimalist version of `concat-stream`. Less than 15 lines!

the tty module from node core for browsers

Copy static properties, prototype properties, and descriptors from one object to another.

Minify URLs by converting them from absolute to relative.

Require constants across node and the browser

Utils for working with JavaScript classes and prototype methods.

Helper function to define a map

Buffers events from a stream until you are ready to handle them.

Plugin for loglevel message prefixing

Detects if a file exists and returns the resolved filepath.

Helper function to hoist variables

Returns true if a number or string value is a finite number. Useful for regex matches, parsing, user input, etc.

Deprecated. Utilities for ES3, most of which have been adopted or superseded in ES5.1. Adapted from Douglas Crockford's Remedial JavaScript

A stream that emits multiple other streams one after another.

Resolve the path of a module like `require.resolve()` but from the current working directory

Helper function to call delegate

Manages the raw value formatting for generated AST nodes.

Recursively flatten an array or arrays.

Helper function to replace supers

List of known file extensions and their MIME types

The lodash method `_.memoize` exported as a module.

Blazing fast unique hash generator

A highly configurable, middleware compatible implementation of CORS.

Various hash functions that could be run by both browser and node

Merge multiple streams into one stream in sequence or parallel.

ECMAScript reserved words checker

Complete list of standard emojis.

Assign the enumerable es6 Symbol properties from one or more objects to the first object passed on the arguments. Can be used as a supplement to other extend, assign or merge methods as a polyfill for the Symbols part of the es6 Object.assign method.

`process.stdout` in your browser.

URI validation functions

Object utils.

Compare strings containing a mix of letters and numbers in the way a human being would in sort order.

The lodash method `_.once` exported as a module.

Easily add plugin support to your node.js application.

Zero cost events

Promisify a callback-based function

A transform to make UglifyJS work in browserify.

Node.js CORS middleware

The lodash method `_.isString` exported as a module.

Fast (and loose) selective `process.env` replacer using js-tokens instead of an AST

Remove wrapping quotes from a string.

Helper function to optimise call expression

Compile ES2015 destructuring to ES5

CSS parser

Generate a slug – transliteration with a lot of options

Compile ES2015 sticky regex to an ES5 RegExp constructor

Write minimal node index.js files that require and export siblings by file basename

Require global variables

The lodash method `_.isBoolean` exported as a module.

AWS signing. Originally pulled from LearnBoost/knox, maintained as vendor in request, now a standalone module.

Apply ES2015 function.name semantics to all functions

Javascript Redis protocol (RESP) parser

Custom errors

The lodash method `_.isPlainObject` exported as a module.

Bit twiddling hacks for JavaScript

Strip line and/or block comments from a string. Blazing fast, and works with JavaScript, Sass, CSS, Less.js, and a number of other languages.

Rational approximation with bounded denominator

Like an array, but rounder.

removes trailing slashes

Node's querystring module for all engines. (ES3 compat fork)

Temporary files and directories

Automatically add displayName to all your components

Helper function to build binary assignment operator visitors

The lodash method `_.uniq` exported as a module.

Retries a function that returns a promise, leveraging the power of the retry module.

Lightweight library for composing asynchronous and event-based operations in JavaScript

Format and manipulate numbers.

Port of jQuery.extend for node.js and the browser

Time duration utilities

Library to walk OAS 3 schema objects and call a callback

Test whether an object looks like a promises-a+ promise

The lodash method `_.debounce` exported as a module.

Local username and password authentication strategy for Passport.

Convert a file: URI to a file path

Helper function to check for literal RegEx

minimalistic-assert ===

babel selfContained runtime

Microsoft sucks

Safely clone node's fs.Stats instances without losing their class methods

Caseless object set/get/has, very useful when working with HTTP headers.

ECMAScript 2015 (ES6) Object.assign polyfill and ponyfill

Returns true if a string has an extglob.

merge() utility function

Awesome Media Queries in JavaScript

Write buffer

Unsigned integers for Javascript

invariant

a pure-JavaScript Node.JS module for random-access decoding bzip2 data

Random number generator for browsers and node.js

Recursively (deep) clone JavaScript native types, like Object, Array, RegExp, Date as well as primitives.

Helper module for loading your native module's .node file

Build chainable fluent interfaces the easy way... with a freakin' chainsaw!

Higher-order functions for easier error handling

Utility package to determine if an `Array.prototype` method properly boxes the callback's receiver and third argument.

Algorithm for finding the root of a yarn workspace, extracted from yarnpkg.com

LRU Queue

Helper function to get function arity

A small api to read and write your requirejs config file

CLS using AsynWrap instead of async-listener - Node >= 4.7.0

A tiny (less than 1k) event emitter library

An elegant way to define lightweight protocols on-top of TCP/TLS sockets in node.js

Native JS murmur hash implementation

Code for processing filters in pug templates

Allow parsing of object rest/spread

Check if a certain debug flag is enabled.

Convert efficiently index to/from line-column in a string

Colors of Google's Material Design made available to coders

Javascript function that triggers browser to save javascript-generated content to a file

The Lodash method `_.merge` exported as a module.

A modern alternative to CSS resets

The lodash method `_.defaults` exported as a module.

A basic but performant promise implementation

Miller Rabin algorithm for primality test

Format data using ECMA-376 spreadsheet Format Codes

Select protocol using first bytes of incoming data and hose stuff to the handler

Implementation RFC 3548 Base32 encoding/decoding for node.