Standard library
ECMAScript 2015 (ES6) Object.assign polyfill and ponyfill
Common JavaScript/TypeScript helper functions for better minification
Lightweight debugging utility for Node.js and the browser
Lodash modular utilities.
React is a JavaScript library for building user interfaces.
A querystring parser that supports nesting and arrays, with a depth limit
Higher-order functions and common patterns for asynchronous code
Babel compiler core.