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

Require module from string

Determine if an object is a Buffer

Full featured Promises/A+ implementation with exceptionally good performance

Safer Node.js Buffer API

get colors in your node.js console

Node.js Buffer API, for the browser

Unpipe a stream from all destinations

Fast deep equal

JSDoc parser

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.

ES2015 `Object.assign()` ponyfill

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

Get the native type of a value.

Basic cache object for storing key-value pairs.

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

The string_decoder module from Node core

Convert encodings, uses iconv-lite

the stream module from node core for browsers

HTTP response freshness testing

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

Iterator abstraction based on ES6 specification

Escape string for use in HTML

Environment agnostic nextTick polyfill

Check whether a string is a URL.

Modern Buffer API polyfill without footguns

Create simple HTTP ETags

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

A cache for managing namespaced sub-caches

Full zlib module for the browser

Utilities to help expose prettier output in linting tools

HTTP methods that node supports

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

Minimal async jobs utility library, with streams support

timers module for browserify

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

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

Simple RFC 6838 media type parser and formatter

Generates a base64 id

getpass for node.js

Generic extension manager for WebSocket connections

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

Manipulate the HTTP Vary header

Operating system specific paths.

parse a url with memoization

js function for hashing messages with MD5

Growl unobtrusive notifications

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

Node.JS path module

QRCodes, in the terminal

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

process information for node.js and browsers

Wrap Streams2 instance into a HandleWrap

Check if a value is a natural number

Converter from any base to other any base

Mirror of mkdirp 0.5.2

An XML builder for node.js

Creates a shallow clone of any JavaScript value.

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

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

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

JavaScript implementation of the BSER Binary Serialization

This is lightweight memory stream module for node.js.

Convert a typed array to a Buffer without a copy

returns nonce

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

node.js basic auth parser

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

Postgres bytea parser

Querystringify - Small, simple but powerful query string parser.

Pluralize and singularize any word

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.

compose Koa middleware

Compressible Content-Type / mime checking

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

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.

Toggle current selected content in browser

Range header field string parser

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

The map of HTTP status codes from the builtin http module

Serve directory listings

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

Isomorphic WHATWG Fetch API, for Node & Browserify

A JavaScript parser

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

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

asynchronous file and directory operations for Node.js

WebSocket protocol handler with pluggable I/O

HTTP proxying for the masses

printf, sprintf, and vsprintf for JavaScript

a collection of useful streams

Utilities for the snapdragon parser/compiler.

For encoding to/from base64urls

Detect if your code is running on an AWS Lambda server

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

Generate a hex color from the given text

API for combining call site modifiers

Join paths and globs.

Check that two PostCSS nodes share the same parent.

Parse a passwd file into a list of users.

A mirror of Facebook's Warning

Get the command from a shebang

ECMAScript6 WeakMap polyfill

For adding, subtracting, and indexing discontinuous ranges of numbers

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

a fast, efficient buffer writer

JSON.parse with context information on error

A lightweight library that provides tools for organizing asynchronous code

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

qjobs is a simple and stupid queue job manager for nodejs

Safely get a dot-notated property within an object.

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

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

Port of the OpenBSD bcrypt_pbkdf function to pure JS

Deprecate all the things

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.

Allow parsing of jsx

Object.fromEntries() ponyfill (in 6 lines)

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

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

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

JSON Schema for HTTP Archive (HAR)

Require constants across node and the browser

XMLHttpRequest for Node

Environment agnostic event emitter

Minify URLs by converting them from absolute to relative.

A polyfill for the Resize Observer API

Additional ESLint rules for ESLint directive comments.

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

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

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

Detects if a file exists and returns the resolved filepath.

Plugin for loglevel message prefixing

Utils for working with JavaScript classes and prototype methods.

A stream that emits multiple other streams one after another.

Blazing fast unique hash generator

A highly configurable, middleware compatible implementation of CORS.

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

the tty module from node core for browsers

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

List of known file extensions and their MIME types

Recursively flatten an array or arrays.

Manages the raw value formatting for generated AST nodes.

Helper function to hoist variables

Helper function to call delegate

Helper function to define a map

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

Merge multiple streams into one stream in sequence or parallel.

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

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.

Helper function to replace supers

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.

ECMAScript reserved words checker

Node.js CORS middleware

Object utils.

Easily add plugin support to your node.js application.

Promisify a callback-based function

URI validation functions

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

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

Zero cost events

Remove wrapping quotes from a string.

CSS parser

Generate a slug – transliteration with a lot of options

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

A transform to make UglifyJS work in browserify.

Javascript Redis protocol (RESP) parser

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

Like an array, but rounder.

Custom errors

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

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

Rational approximation with bounded denominator

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.

Temporary files and directories

Require global variables

Helper function to optimise call expression

Bit twiddling hacks for JavaScript

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

Apply ES2015 function.name semantics to all functions

Compile ES2015 destructuring to ES5

Compile ES2015 sticky regex to an ES5 RegExp constructor

removes trailing slashes

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

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

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

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

Convert a file: URI to a file path

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

Format and manipulate numbers.

Local username and password authentication strategy for Passport.

Returns true if a string has an extglob.

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

Automatically add displayName to all your components

Library to walk OAS 3 schema objects and call a callback

Time duration utilities

merge() utility function

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

Helper function to build binary assignment operator visitors

Write buffer

minimalistic-assert ===

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

Awesome Media Queries in JavaScript

babel selfContained runtime

Helper function to check for literal RegEx

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

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

ECMAScript 2015 (ES6) Object.assign polyfill and ponyfill

Random number generator for browsers and node.js

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

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

Microsoft sucks

invariant

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

A small api to read and write your requirejs config file

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

Code for processing filters in pug templates

Unsigned integers for Javascript

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

A tiny (less than 1k) event emitter library

Native JS murmur hash implementation

Check if a certain debug flag is enabled.

LRU Queue

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

Higher-order functions for easier error handling

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

Helper function to get function arity

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

A modern alternative to CSS resets

Allow parsing of object rest/spread

A basic but performant promise implementation

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

Implementation RFC 3548 Base32 encoding/decoding for node.

Miller Rabin algorithm for primality test

Colors of Google's Material Design made available to coders

Format data using ECMA-376 spreadsheet Format Codes

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

Framework-agnostic, micro-library for getting stack traces in all environments