Brand checking of React Elements.

React is a JavaScript library for building user interfaces.

Cooperative scheduler for the browser environment.

Promise based HTTP client for the browser and node.js

Packs CommonJs/AMD modules for the browser. Allows to split your codebase into multiple bundles, which can be loaded on demand. Support loaders to preprocess files, i.e. json, jsx, es7, css, less, ... and your custom stuff.

Fast, unopinionated, minimalist web framework

Lodash modular utilities.

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

Prettier is an opinionated code formatter

An extremely fast JavaScript and CSS bundler and minifier.

Reactive Extensions for modern JavaScript

Higher-order functions and common patterns for asynchronous code

Tool for transforming styles with JS plugins

the complete solution for node.js command-line programs

Next-generation ES module bundler

An AST-based pattern checker for JavaScript.

Full featured Promises/A+ implementation with exceptionally good performance

Terminal string styling done right

Simple to use, blazing fast and thoroughly tested websocket client and server for Node.js

Standard library

A tiny (116 bytes), secure URL-friendly unique string ID generator

A collection of common interactive command line user interfaces.

Loads environment variables from .env file

A parser that converts TypeScript source code into an ESTree compatible form

TypeScript scope analyser for ESLint

An ESLint custom parser which leverages TypeScript ESTree

TypeScript plugin for ESLint

Types for the TypeScript-ESTree AST spec

Visitor keys used to help traverse the TypeScript-ESTree AST

Utilities for working with TypeScript + ESLint together

RFC4122 (v1, v4, and v5) UUIDs

Another JSON Schema Validator

Share target browsers between different front-end tools, like Autoprefixer, Stylelint and babel-env-preset

Lightweight debugging utility for Node.js and the browser

yargs the modern, pirate-themed, successor to optimist.

A collection of essential TypeScript types

Minimal and efficient cross-platform file watching library

ECMAScript parser

fs-extra contains methods that aren't included in the vanilla Node.js fs package. Such as recursive mkdir, copy, and remove.

ECMAScript (ESTree) AST walker

A light-weight module that brings Fetch API to node.js

Elegant terminal spinner

a little globber

JavaScript parser, mangler/compressor and beautifier toolkit for ES6+

A querystring parser that supports nesting and arrays, with a depth limit

Express style path to RegExp utility

ECMAScript parsing infrastructure for multipurpose analysis

A javascript text diff implementation.

YAML 1.2 parser and serializer

JSON for Humans

Node.js body parsing middleware

Process execution for humans

A deep deletion module for node (like `rm -rf`)

The semantic version parser used by npm.

A cache object that deletes the least-recently-used items.

zlib port to javascript - fast, modularized, with browser support

Tiny millisecond conversion utility

Runtime type checking for React props and similar objects.

Runtime for Regenerator-compiled generator and async functions.

Fast & forgiving HTML/XML parser

Find and load configuration from a package.json property, rc file, or CommonJS module

HTML parser and serializer.

Just a little module for plugins.

Generates and consumes source maps

a glob matcher in javascript

Convert character encodings in pure javascript.

EventEmitter3 focuses on performance while maintaining a Node.js AND browser compatible interface.

Open stuff like URLs, files, executables. Cross-platform.

Serialize JavaScript to a superset of JSON that includes regular expressions and functions.

A library for deep (recursive) merging of Javascript objects

ECMAScript code generator

JSONSchema Type Builder with Static Type Resolution for TypeScript

User-friendly glob matching

Glob matching for javascript/node.js. A replacement and faster alternative to minimatch and multimatch.

A library to create readable "multipart/form-data" streams. Can be used to submit forms and file uploads to other web applications.

Fixes stack traces for files with source maps

Types for the AWS SDK

JavaScript sprintf implementation

Simple key-value storage with support for multiple backends

An Esprima-compatible JavaScript parser built on Acorn

It's a very fast and efficient glob library for Node.js

A tiny wrapper around Node.js streams.Transform (Streams2/3) to avoid explicit subclassing noise

A comprehensive library for mime-type mapping

Terser plugin for webpack

Modify strings, generate sourcemaps

A tool set for CSS: fast detailed parser (CSS → AST), walker (AST traversal), generator (AST → CSS) and lexer (validation and matching) based on specs and browser implementations

Fast deep equal

Load node modules according to tsconfig paths, in run-time or via API.

A regular expression to match all Emoji-only symbols as per the Unicode Standard.

Promisify a callback-style function

Node.js Buffer API, for the browser

A robust Punycode converter that fully complies to RFC 3492 and RFC 5891, and works on nearly all JavaScript platforms.

🌈Easily set your terminal text color & styles.

The fastest Node.js library for formatting terminal text with ANSI colors~!

Strict TypeScript and Flow types for style based on MDN data

Serve static files

Create HTTP error objects

Node's event emitter for all engines.

A drop-in replacement for fs, making various improvements.

Easily read/write JSON files.

Unopinionated, no-frills CLI argument parser

HTTP server cookie parsing and serialization

The ultimate javascript content-type utility.

Runtime library for TypeScript helper functions

Big number implementation in pure javascript

Abstraction for exponential and custom retry strategies for failed operations.

An evented streaming XML parser in JavaScript

Run multiple promise-returning & async functions with limited concurrency

Node.js Streams, a user-land copy of the stream library from Node.js

Cross platform child_process#spawn and child_process#spawnSync

ES2015 `Object.assign()` ponyfill

An XML builder for node.js

Map over promises concurrently

pipe streams together and close all of them if one of them closes

ECMAScript JS AST traversal functions

Media Type Database

A super light and fast circular JSON parser.

istanbul reports

Data library for istanbul coverage objects

Base reporting library for istanbul

JavaScript parser and stringifier for YAML

Offers a async require.resolve function. It's highly configurable.

The tiniest and the fastest library for terminal output formatting with ANSI colors

RFC6265 Cookies and Cookie Jar for node.js

Base64 encoding/decoding in pure JS

Normalize a URL

deep cloning of objects and arrays

Better streaming static file server with Range and conditional-GET support

Fake JavaScript timers

utils for webpack loaders

CSS Object Model implementation and CSS parser

tar for node

resolve like require.resolve() on behalf of files asynchronously and synchronously

An ini encoder/decoder for node

Temporary file and directory creator

simplified stream construction

Colored symbols for various log levels. Example: `✔︎ Success`

Open Web data by the Mozilla Developer Network

Given some data, jsesc returns the shortest possible stringified & ASCII-safe representation of that data.

Plain color conversion functions

Measure the difference between two strings using the Levenshtein distance algorithm

Neo-Async is a drop-in replacement for Async, it almost fully covers its functionality and runs faster

Fast, in memory work queue

A query library for ECMAScript AST using a CSS selector like query language.

Convert a dash/dot/underscore/space separated string to camelCase or PascalCase: `foo-bar` → `fooBar`

Modern, fast React.js JSX parser

Blazing fast and accurate glob matcher written in JavaScript, with no dependencies and full support for standard and extended Bash glob features, including braces, extglobs, POSIX brackets, and regular expressions.

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

Strip comments from JSON. Lets you use comments in your JSON files!

Option parsing for Node, supporting types, shorthands, etc. Used by npm.

Unicode symbols with fallbacks for older terminals

Escape RegExp special characters

An HTTP(s) proxy `http.Agent` implementation for HTTPS

a CSS selector compiler/engine

A library for manipulating IPv4 and IPv6 addresses in JavaScript.

HTTP and HTTPS modules that follow redirects.

Find a file or directory by walking up parent directories

Make a directory and its parents if needed - Think `mkdir -p`

CLI arguments parser. Native port of python's argparse.

JSDoc parser

A smaller version of caniuse-db, with only the essentials!

the mighty option parser used by yargs

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.

Buffer List: collect buffers and access with a standard readable Buffer interface, streamable too!

Utility to parse a string bytes to bytes and vice-versa

ANSI escape codes for manipulating the terminal

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

Escape string for use in HTML

Ignore is a manager and filter for .gitignore rules, the one used by eslint, gitbook and many others.

Execute a callback when a request closes, finishes, or errors

Recursive version of fs.readdir with streaming API.

tar-stream is a streaming tar parser and generator and nothing else. It operates purely using streams which means you can easily extract/parse tarballs without ever hitting the file system.

Easily add ANSI colors to your text and symbols in the terminal. A faster drop-in replacement for chalk, kleur and turbocolor (without the dependencies and rendering bugs).

Run an array of functions in parallel

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

Wrapper library for directory and file watching.

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

Matches strings against configurable strings, globs, regular expressions, and/or functions

Get the visual width of a string - the number of columns required to display it

Strip ANSI escape codes from a string

Get and validate the raw body of a readable stream.

Safer Node.js Buffer API

Properly hijack require

Detect whether a terminal supports color

An implementation of the WHATWG URL Standard's URL API and parsing machinery

Deprecate all the things

Get the native type of a value.

extend like a boss

Traverse an ESTree-compliant AST

Convert Windows backslash paths to slash paths

Domain name parser based on the Public Suffix List

easily create complex multi-column command-line-interfaces

Like which(1) unix command. Find the first instance of an executable in the PATH.

Parse JSON with more helpful errors

An RFC 3986/3987 compliant, scheme extendable URI/IRI parsing/validating/resolving library for JavaScript.

Get a stream as a string, buffer, or array

Global identifiers from different JavaScript environments

Babel helper to create your own polyfill provider

A Babel plugin to inject imports to core-js@3 polyfills

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

Import a module while bypassing the cache

Handler for htmlparser2 that turns pages into a dom

Encode & decode XML and HTML entities with ease & speed

HTTP status utility

Get details about the current Continuous Integration environment

Tiny queue data structure

Higher-level content negotiation

Source code handling classes for webpack

Create simple HTTP ETags

Additional JSON-Schema keywords for Ajv JSON validator

Get callsites from the V8 stack trace API

HTTP content negotiation

Fast, fault-tolerant, cross-platform, disk-based, data-agnostic, content-addressable cache.

Convert a camelized string into a lowercased one with a custom separator: unicornRainbow → unicorn_rainbow

Force V8 to use fast properties for an object

minimal implementation of a PassThrough stream

Node.js's util module for all engines

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

Run a function exactly one time

Create a stream that emits events from multiple other streams

webpack Validation Utils

Provides metadata and conversions from repository urls for GitHub, Bitbucket and GitLab

Infer the content-type of a request.

Node.js final http responder

type-check allows you to check the types of JavaScript values at runtime with a Haskell like type syntax.

deterministic `JSON.stringify()` - a faster version of substack's json-stable-strigify without jsonify

Programmatic access to the ARIA specification

Find the root directory of a Node.js project or npm package

Create and parse Content-Disposition header

a CSS selector parser

Yet Another Linked List

> Selector parser with built in methods for working with selector strings.

parse a url with memoization

HTTP methods that node supports

Brace expansion as known from sh/bash

Normalizes data that can be found in package.json files.

Check if the process is running inside Windows Subsystem for Linux (Bash on Windows)

when you want to fire an event no matter how a process exits.

Merge multiple streams into one stream in sequence or parallel.

fast, tiny `queueMicrotask` shim for modern engines

Bash-like brace expansion, implemented in JavaScript. Safer than other brace expansion libs, with complete support for the Bash 4.3 braces specification, without sacrificing speed.

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.

HTTP response freshness testing

Converts a source-map from/to different formats and allows adding/changing properties.

option parsing and help generation

ECMAScript spec-compliant polyfill/shim for `globalThis`

Utilities for working with htmlparser2's dom

Call a callback when a readable/writable/duplex stream has completed or failed.

Regular expression for matching ANSI escape codes

Check if a path exists

Ensure a function is only called once

Read a package.json file

Sign and unsign cookies

the bare-bones internationalization library used by yargs

A stream that emits multiple other streams one after another.

Let a globally installed package use a locally installed version of itself if available

Implementation of Function.prototype.bind

A tiny (183B to 210B) and fast utility to ascend parent directories

Strip leading whitespace from each line in a string

Reuse objects and functions with style

Returns true if an object was created by the `Object` constructor, or Object.create(null).

A stupidly simple key/value storage using files to persist some data

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

Improved typeof detection for node.js and the browser.

Transforms css values and at-rule params into the tree

Wrap words to a specified length.

Array#isArray for older browsers

Provides a list of electron-to-chromium version mappings

Merge objects using descriptors

string representations of objects in node and the browser

Recursively mkdir, like `mkdir -p`

Create and parse HTTP Content-Type header

Finds the common standard cache directory

Pass two numbers, get a regex-compatible source string for matching ranges. Validated against more than 2.78 million test assertions.

utility box for ECMAScript language tools

Determine address of proxied request

An HTTP(s) proxy `http.Agent` implementation for HTTP

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

Check if something is a Node.js stream

Match balanced character pairs, like "{" and "}"

ES6 spec-compliant Object.assign shim. From https://github.com/es-shims/es6-shim

Indent each line in a string

process information for node.js and browsers

Wordwrap a string with ANSI escape codes

Make a callback- or promise-based function support both promises and callbacks.

Strip UTF-8 byte order mark (BOM) from a string

The `util.is*` functions introduced in Node v0.12.

ECMAScript spec abstract operations.

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

Get your PATH prepended with locally installed binaries

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.

ECMAScript scope analyzer for ESLint

A list of color names and its values

A zero-dependency alternative to cosmiconfig

fast and safe way to escape and unescape &<>'" chars

Determine if an object is a Buffer

Traverse JSON Schema passing each schema object to callback

Flatten nested arrays

Check if a value is a plain object

render domhandler DOM nodes to a string

Range header field string parser

Toggle the CLI cursor

Check if argv has a specific flag

random bytes from browserify stand alone

Returns `true` if the given string looks like a glob pattern or an extglob pattern. This makes it easy to create code that only uses external modules like node-glob when necessary, resulting in much faster code execution and initialization time, and a bet

An incremental implementation of MurmurHash3

List of binary file extensions

Get the path of the parent module

ES2017 spec-compliant Object.values shim.

Extract the non-magic parent path from a glob string.

Light ECMAScript (JavaScript) Value Notation - human written, concise, typed, flexible

ECMAScript AST recursive visitor

Create an array of unique values, in order, from the input arrays

Get the first fulfilled promise that satisfies the provided testing function

merge() utility function

Check if a path is a file, directory, or symlink

Trace the original position through a source map

Easy error subclassing and stack customization

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

Callback wrapping utility

parse argument options

Mimic a Node.js HTTP response stream

Generates and consumes source maps

Manipulate the HTTP Vary header

Get the first path that exists on disk of multiple paths

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

destroy a stream if possible

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

Remap sequential sourcemaps through transformations to point at the original source code

A small polyfill for Object.setprototypeof

Turn a function into an `http.Agent` instance

Simple RFC 6838 media type parser and formatter

A library for efficiently walking a directory recursively

Get the status of a file with some features

List files and directories inside the specified directory

Bytes go in, but they don't come out (when muted).

Node.js path.parse() ponyfill

Allows users to use generators in order to write common functions that can be both sync or async.

Check if the character represented by a given Unicode code point is fullwidth

Fill in a range of numbers or letters, optionally passing an increment or `step` to use, or create a regex-compatible range with `options.toRegex`

`Start a promise chain

Super simple cache for file metadata, useful for process that work o a given series of files and that only need to repeat the job on the changed ones since the previous run of the process

An Object.keys replacement, in case Object.keys is not available. From https://github.com/es-shims/es5-shim

Minimal module to check if a file is executable.

Regular expression for matching a shebang line

Slice a string with ANSI escape codes

Get the PATH environment variable key cross-platform

Check if a path is inside another path

The Node.js `util.deprecate()` function with browser support

Check if a file path is a binary file

Is this JS value callable? Works with Functions and GeneratorFunctions, despite ES6 @@toStringTag.

Parses and compiles CSS nth-checks to highly optimized functions.

parse SPDX license expressions

Node.js releases data

process.nextTick but always with args

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

A list of SPDX license identifiers

Gracefully restore the CLI cursor on exit

like `chown -R`

Encode a URL to a percent-encoded form, excluding already-encoded sequences

[](https://travis-ci.org/stefanpenner/get-caller-file) [](https://ci.a

The string_decoder module from Node core

Implements the WebIDL algorithms for converting to and from JavaScript values

Modern Buffer API polyfill without footguns

Constants and utilities about visitor keys to traverse AST.

Unpipe a stream from all destinations

all the types of nodes in htmlparser2's dom

Use node's fs.realpath, but fall back to the JS implementation if the native one fails

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

Minimal async jobs utility library, with streams support

Is this value a JS regex? Works cross-realm/iframe, and despite ES6 @@toStringTag

A better forEach

ECMAScript “ToPrimitive” algorithm. Provides ES5 and ES2015 versions.

Get the command from a shebang

Returns true if a string has an extglob.

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

A [ponyfill](https://ponyfill.com) for `Buffer.from`, uses native implementation if available.

An implementation of the Unicode UTS #46: Unicode IDNA Compatibility Processing

Maps lines and columns to character offsets and back.

Define multiple non-enumerable properties at once. Uses `Object.defineProperty` when available; falls back to standard assignment in older engines.

Is this value a JS String object or primitive? This module works cross-realm/iframe, and despite ES6 @@toStringTag.

Get and robustly cache all JS language-level intrinsics at first require time

node's assert.deepEqual algorithm except for NaN being equal to NaN

Determine if a value is an ES6 Symbol or not.

Returns true if a value has the characteristics of a valid JavaScript data descriptor.

Determines if an object can be used as an array

Is this value negative zero? === will lie to you

ES5 spec-compliant shim for String.prototype.trim

Returns true if a value has the characteristics of a valid JavaScript accessor descriptor.

Is this specifier a node.js core module?

Returns true if a value has the characteristics of a valid JavaScript descriptor. Works for data descriptors and accessor descriptors.

Determine if the JS environment has Symbol support. Supports spec, or shams.

Is this value a JS Date object? This module works cross-realm/iframe, and despite ES6 @@toStringTag.

Is this value a JS ArrayBuffer?

list of SPDX standard license exceptions

Store information about any JS value in a side channel. Uses WeakMap if available.

Which kind of Typed Array is this JavaScript value? Works cross-realm, without `instanceof`, and despite Symbol.toStringTag.

Is this value a JS Typed Array? This module works cross-realm/iframe, does not depend on `instanceof` or mutable properties, and despite ES6 Symbol.toStringTag.

JSON.parse with context information on error

An ES2015 spec-compliant `Function.prototype.name` shim

ES6 spec-compliant RegExp.prototype.flags shim.

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

Convert a string of words to a JavaScript identifier

Which kind of boxed JS primitive is this?

Determine if the JS environment has BigInt support.

Is this value a JS Number object? This module works cross-realm/iframe, and despite ES6 @@toStringTag.

Is this value an ES BigInt?

Does this JS environment support the `name` property on functions?

Robustly get the length of a Typed Array

ES2019 spec-compliant String.prototype.trimEnd shim.

Unbox a boxed JS primitive value.

Is this value a JS Boolean? This module works cross-realm/iframe, and despite ES6 @@toStringTag.

Robustly `.call.bind()` a function

Resolve a URI relative to an optional base URI

ES2019 spec-compliant String.prototype.trimStart shim.

ES spec-like internal slots

Simple functions shared among the sinon end user libraries

Determine if the JS environment has `Symbol.toStringTag` support. Supports spec, or shams.

Generate source maps

Returns an array of Typed Array names that are available in the current environment

concatenative mapdashery

Like a Set, but provides the index of the `key` in the backing array

Is this value a JS SharedArrayBuffer?

Gets the description of a Symbol. Handles `Symbol()` vs `Symbol('')` properly when possible.

Is this value a JS WeakRef? This module works cross-realm/iframe, and despite ES6 @@toStringTag.

ANSI escape codes for styling strings in the terminal

JavaScript curried hasOwn helper

Stringify any JavaScript value.

This package contains shared types of Jest's packages.

Tiny JavaScript tokenizer.

Does the environment have full property descriptor support? Handles IE 8's broken defineProperty/gOPD.

Delightful JavaScript Testing.

Module for executing heavy tasks under forked processes in parallel, by providing a `Promise` based interface, minimum overhead, and bound workers.

Encode/decode sourcemap mappings

A utility function to get the type of a value

Determine if the current node version supports the `--preserve-symlinks` flag.