250 Most Popular Javascript Packages

ECMAScript scope analyzer for ESLint

Create HTTP error objects

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

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

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.

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

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

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

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

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

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

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

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

A JavaScript parser

Higher-order functions and common patterns for asynchronous code

Easily read/write JSON files.

Transforms css values and at-rule params into the tree

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

Deprecate all the things

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

Media Type Database

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

General utilities for plugins to use

babel's modular runtime helpers

Node.js Buffer API, for the browser

Get your PATH prepended with locally installed binaries

The ultimate javascript content-type utility.

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

Lodash modular utilities.

`Start a promise chain

JSDoc parser

Babel compiler core.

Turns an AST into code.

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

HTTP status utility

Minimal and efficient cross-platform file watching library

Make a function mimic another one

Validate identifier/keywords name

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

The Babel Traverse module maintains the overall tree state, and is responsible for replacing, removing, and adding nodes

Reactive Extensions for modern JavaScript

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

A small polyfill for Object.setprototypeof

Runtime for Regenerator-compiled generator and async functions.

Get details about the current Continuous Integration environment

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

Syntax highlight JavaScript strings for output in terminals.

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.

option parsing and help generation