250 Most Popular Javascript Packages

Regular expression for matching a shebang line

Get the command from a shebang

Convert character encodings in pure javascript.

Convert Windows backslash paths to slash paths

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

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

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

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

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

A JavaScript parser

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

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

Easily read/write JSON files.

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

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

Media Type Database

Lodash modular utilities.

Minimal and efficient cross-platform file watching library

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

ECMAScript scope analyzer for ESLint

TypeScript definitions for yargs

The ultimate javascript content-type utility.

Stringify any JavaScript value.

Brace expansion as known from sh/bash

General utilities for plugins to use

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

babel's modular runtime helpers

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

Babel compiler core.

Syntax highlight JavaScript strings for output in terminals.

Standard library

Turns an AST into code.

JSDoc parser

A small polyfill for Object.setprototypeof

Get your PATH prepended with locally installed binaries

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

Node.js Buffer API, for the browser

Recursive version of fs.readdir with streaming API.

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

RFC6265 Cookies and Cookie Jar for node.js

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

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

Validate identifier/keywords name

Deprecate all the things

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

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

Determines if an object can be used as an array

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

Ensure a function is only called once

Make a function mimic another one