Cypress is a next generation front end testing tool built for the modern web
Easy method stubber.
Extends Chai with assertions for the Sinon.JS mocking framework.
Stub implementations of Node built-in modules, a la Browserify
Spies for the Chai assertion library.
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.