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.

Detect whether or not an object is a Typed Array

utility box for ECMAScript language tools

Base64 encoding/decoding in pure JS

Make your own error types!

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

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

Determine if an object is a Buffer

Implementation of JSON Web Signatures

The string_decoder module from Node core

Require module from string

Safer Node.js Buffer API

get colors in your node.js console

Node.js Buffer API, for the browser

Full featured Promises/A+ implementation with exceptionally good performance

Fast deep equal

JSDoc parser

Unpipe a stream from all destinations

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

Basic cache object for storing key-value pairs.

Get the native type of a value.

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

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

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

the stream module from node core for browsers

Convert encodings, uses iconv-lite

A cache for managing namespaced sub-caches

Environment agnostic nextTick polyfill

HTTP response freshness testing

Iterator abstraction based on ES6 specification

Escape string for use in HTML

Utilities to help expose prettier output in linting tools

Create simple HTTP ETags

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

Check whether a string is a URL.

Modern Buffer API polyfill without footguns

Full zlib module for the browser

Mirror of mkdirp 0.5.2

timers module for browserify

HTTP methods that node supports

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.

getpass for node.js

Minimal async jobs utility library, with streams support

Generates a base64 id

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

Simple RFC 6838 media type parser and formatter

Generic extension manager for WebSocket connections

Growl unobtrusive notifications

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

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

Manipulate the HTTP Vary header

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

js function for hashing messages with MD5

Operating system specific paths.

Node.JS path module

parse a url with memoization

QRCodes, in the terminal

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

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

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

process information for node.js and browsers

Converter from any base to other any base

Check if a value is a natural number

Creates a shallow clone of any JavaScript value.

Wrap Streams2 instance into a HandleWrap

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

This is lightweight memory stream module for node.js.

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

JavaScript implementation of the BSER Binary Serialization

Convert a typed array to a Buffer without a copy

An XML builder for node.js

Port of the OpenBSD bcrypt_pbkdf function to pure JS

Pluralize and singularize any word

returns nonce

Postgres bytea parser

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

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

node.js basic auth parser

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

Querystringify - Small, simple but powerful query string parser.

Utils for working with JavaScript classes and prototype methods.

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

Toggle current selected content in browser

Port of TweetNaCl cryptographic library to JavaScript

The map of HTTP status codes from the builtin http module

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

Compressible Content-Type / mime checking

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

A JavaScript parser

Serve directory listings

a collection of useful streams

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

`process.stdout` in your browser.

A highly configurable, middleware compatible implementation of CORS.

Check that two PostCSS nodes share the same parent.

asynchronous file and directory operations for Node.js

Detect if your code is running on an AWS Lambda server

Range header field string parser

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

WebSocket protocol handler with pluggable I/O

Isomorphic WHATWG Fetch API, for Node & Browserify

For encoding to/from base64urls

API for combining call site modifiers

printf, sprintf, and vsprintf for JavaScript

Utilities for the snapdragon parser/compiler.

Promisify a callback-based function

Parse a passwd file into a list of users.

HTTP proxying for the masses

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

A mirror of Facebook's Warning

A lightweight library that provides tools for organizing asynchronous code

Node.js CORS middleware

a fast, efficient buffer writer

Generate a hex color from the given text

ECMAScript6 WeakMap polyfill

Get the command from a shebang

qjobs is a simple and stupid queue job manager for nodejs

For adding, subtracting, and indexing discontinuous ranges of numbers

Join paths and globs.

Allow parsing of jsx

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

JSON.parse with context information on error

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

JSON Schema for HTTP Archive (HAR)

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

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

Helper function to hoist variables

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

the tty module from node core for browsers

Deprecate all the things

minimalistic-assert ===

Safely get a dot-notated property within an object.

Helper function to define a map

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

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

Helper function to call delegate

Object.fromEntries() ponyfill (in 6 lines)

Additional ESLint rules for ESLint directive comments.

A polyfill for the Resize Observer API

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.

Helper function to replace supers

Environment agnostic event emitter

XMLHttpRequest for Node

Minify URLs by converting them from absolute to relative.

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

Require constants across node and the browser

Manages the raw value formatting for generated AST nodes.

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

Plugin for loglevel message prefixing

Recursively flatten an array or arrays.

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

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

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

A stream that emits multiple other streams one after another.

Detects if a file exists and returns the resolved filepath.

Blazing fast unique hash generator

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

A transform to make UglifyJS work in browserify.

ECMAScript reserved words checker

List of known file extensions and their MIME types

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.

Merge multiple streams into one stream in sequence or parallel.

Object utils.

Easily add plugin support to your node.js application.

Helper function to optimise call expression

Returns a filtered copy of an object with only the specified keys, similar to `_.pick` from lodash / underscore.

URI validation functions

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

resolve which handles browser field support in package.json

Zero cost events

Warning and invariant dev-ex messaging.

ESLint plugin about ECMAScript syntactic features.

Compile ES2015 destructuring to ES5

Apply ES2015 function.name semantics to all functions

Remove wrapping quotes from a string.

Complete list of standard emojis.

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

Compile ES2015 sticky regex to an ES5 RegExp constructor

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

Map `visit` over an array of objects.

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

CSS parser

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

Helper function to build binary assignment operator visitors

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

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

Automatically add displayName to all your components

removes trailing slashes

Require global variables

Generate a slug – transliteration with a lot of options

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.

Bit twiddling hacks for JavaScript

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

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

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

Custom errors

Microsoft sucks

Javascript Redis protocol (RESP) parser

Helper function to check for literal RegEx

Like an array, but rounder.

babel selfContained runtime

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

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

Rational approximation with bounded denominator

Time duration utilities

HTTP Agent that keeps socket connections alive between keep-alive requests. Formerly part of mikeal/request, now a standalone module.

Helper function to get function arity

Library to walk OAS 3 schema objects and call a callback

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

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

Format and manipulate numbers.

Local username and password authentication strategy for Passport.

Temporary files and directories

Allow parsing of object rest/spread

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

Awesome Media Queries in JavaScript

Higher-order functions for easier error handling

ECMAScript 2015 (ES6) Object.assign polyfill and ponyfill

invariant

LRU Queue

Write buffer

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

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

Random number generator for browsers and node.js

Unsigned integers for Javascript

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

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

Convert a file: URI to a file path

merge() utility function

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

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

A small api to read and write your requirejs config file

A tiny (less than 1k) event emitter library

Returns true if a string has an extglob.

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

Colors of Google's Material Design made available to coders

For a given Buffer or Stream, this module will attempt to determine the total length of the stream contents. It currently supports Buffers, `fs` streams, `http` responses, and `request` objects, and allows for specifying custom stream types.

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

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

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

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

Locate a program or locally installed node module's executable

Fastest stable deterministic JSON.stringify()

Code for processing filters in pug templates

A modern alternative to CSS resets