JSPM

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

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

Creates a shallow clone of any JavaScript value.

Converter from any base to other any base

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

Wrap Streams2 instance into a HandleWrap

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

This is lightweight memory stream module for node.js.

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

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

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

Postgres bytea parser

node.js basic auth parser

Pluralize and singularize any word

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

Querystringify - Small, simple but powerful query string parser.

Port of the OpenBSD bcrypt_pbkdf function to pure JS

[](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

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

Port of TweetNaCl cryptographic library to JavaScript

Compressible Content-Type / mime checking

compose Koa middleware

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

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

Serve directory listings

Utils for working with JavaScript classes and prototype methods.

Range header field string parser

A JavaScript parser

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

asynchronous file and directory operations for Node.js

Isomorphic WHATWG Fetch API, for Node & Browserify

For encoding to/from base64urls

a collection of useful streams

WebSocket protocol handler with pluggable I/O

HTTP proxying for the masses

A highly configurable, middleware compatible implementation of CORS.

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.

printf, sprintf, and vsprintf for JavaScript

A mirror of Facebook's Warning

Parse a passwd file into a list of users.

`process.stdout` in your browser.

Join paths and globs.

Generate a hex color from the given text

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

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

Get the command from a shebang

ECMAScript6 WeakMap polyfill

a fast, efficient buffer writer

Promisify a callback-based function

For adding, subtracting, and indexing discontinuous ranges of numbers

A lightweight library that provides tools for organizing asynchronous code

Node.js CORS middleware

qjobs is a simple and stupid queue job manager for nodejs

JSON.parse with context information on error

Allow parsing of jsx

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

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

Safely get a dot-notated property within an object.

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

Deprecate all the things

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

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

JSON Schema for HTTP Archive (HAR)

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

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.

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

Additional ESLint rules for ESLint directive comments.

Object.fromEntries() ponyfill (in 6 lines)

A polyfill for the Resize Observer API

XMLHttpRequest for Node

Environment agnostic event emitter

the tty module from node core for browsers

Minify URLs by converting them from absolute to relative.

Require constants across node and the browser

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

Helper function to define a map

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

Helper function to hoist variables

minimalistic-assert ===

Detects if a file exists and returns the resolved filepath.

Plugin for loglevel message prefixing

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

Helper function to replace supers

Manages the raw value formatting for generated AST nodes.

Recursively flatten an array or arrays.

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

Blazing fast unique hash generator

Merge multiple streams into one stream in sequence or parallel.

List of known file extensions and their MIME types

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

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.

URI validation functions

Easily add plugin support to your node.js application.

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

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

Object utils.

Zero cost events

A transform to make UglifyJS work in browserify.

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

Remove wrapping quotes from a string.

Warning and invariant dev-ex messaging.

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

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

Helper function to optimise call expression

Compile ES2015 destructuring to ES5

Generate a slug – transliteration with a lot of options

CSS parser

ESLint plugin about ECMAScript syntactic features.

Compile ES2015 sticky regex to an ES5 RegExp constructor

resolve which handles browser field support in package.json

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

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

Require global variables

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

Apply ES2015 function.name semantics to all functions

Custom errors

Bit twiddling hacks for JavaScript

Javascript Redis protocol (RESP) parser

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.

removes trailing slashes

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

Rational approximation with bounded denominator

Automatically add displayName to all your components

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

Helper function to build binary assignment operator visitors

Map `visit` over an array of objects.

Like an array, but rounder.

Temporary files and directories

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

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

Format and manipulate numbers.

Time duration utilities

Library to walk OAS 3 schema objects and call a callback

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

Local username and password authentication strategy for Passport.

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

Microsoft sucks

Convert a file: URI to a file path

babel selfContained runtime

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

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

ECMAScript 2015 (ES6) Object.assign polyfill and ponyfill

Helper function to check for literal RegEx

Returns true if a string has an extglob.

Awesome Media Queries in JavaScript

merge() utility function

Write buffer

Unsigned integers for Javascript

invariant

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

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.

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.

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

LRU Queue

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

Helper function to get function arity

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

Random number generator for browsers and node.js

A small api to read and write your requirejs config file

A tiny (less than 1k) event emitter library

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

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

Native JS murmur hash implementation

Allow parsing of object rest/spread

Check if a certain debug flag is enabled.

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

Code for processing filters in pug templates

Colors of Google's Material Design made available to coders

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

A modern alternative to CSS resets

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

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

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.

Fastest stable deterministic JSON.stringify()

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

Implementation RFC 3548 Base32 encoding/decoding for node.

Find a file fast, by starting at the given cwd and recursing up one directory until the file is found or we run out of directories.

Convert a list of keywords into a single keyword match.

Get a list of arguments, separated by a comma.

Reliable way to get the height and width of terminal/console, since it's not calculated or updated the same way on all platforms, environments and node.js versions.

Allow parsing of class properties

Locate a program or locally installed node module's executable

convert modern Koa legacy generator-based middleware to promise-based middleware

Run some code when the process exits (supports async hooks and pm2 clustering)

Compile ES2015 default and rest parameters to ES5

Promise-based queue

Deeply mix the properties of objects into the first object. Like merge-deep, but doesn't clone. No dependencies.

aes, for browserify

Compile ES2015 template literals to ES5

Remove unnecessary React propTypes from the production build

A fork of Netflix's implementation of the OAuth1 protocol

Regular expression for matching astral symbols

Windows MetaFile (WMF) parser

simple backoff based on segmentio/backo

deep cloning of objects and arrays

Expand POSIX bracket expressions (character classes) in glob patterns.

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

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

Recursive object extending

The directory used by npm for globally installed npm modules.

Map color names to HEX color values.

Babel plugin to ensure function declarations at the block level are block scoped

Timing safe string compare using double HMAC

micro check library

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

Require and resolve global modules like a boss

Check if a protocol requires a certain port number to be added to an URL.

Javascript utility for calculating deep difference, capturing changes, and applying changes across objects; for nodejs and the browser.

ES2015 Promise ponyfill

Normalize CSS Selectors

Cross-browser `CustomEvent` constructor

Pause a stream's data events

Polyfill for Node.js module.createRequire (<= v12.2.0)

The [os](https://nodejs.org/api/os.html) module from node.js, but for browsers.

String convertions

Javascript implementation of the Unix crypt(3) DES-based hash

Compare alphanumeric strings the same way a human would, using a natural order algorithm

file downloading using client-side javascript

Run an array of functions in series

CSS parser / stringifier

The Pug loader is responsible for loading the depenendencies of a given Pug file.

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

Parse/stringify JSON and provide source-map for JSON-pointers to all nodes

Highlight keywords using JavaScript. Intended for every use case. Can e.g. be used to mark text in search results.

Pad strings to a given length

Unique machine (desktop) id (no admin privileges required).

Allow parsing of the exponentiation operator