An ES5 spec-compliant Array.prototype.reduce shim/polyfill/replacement that works as far down as ES3.
Array.prototype.reduce
MDN polyfills
A tiny, faster alternative to native Array.prototype.reduce
Lightweight debugging utility for Node.js and the browser
Lodash modular utilities.
A querystring parser that supports nesting and arrays, with a depth limit
Higher-order functions and common patterns for asynchronous code
React is a JavaScript library for building user interfaces.
Babel compiler core.